EP2019209A1 - Device and method for feeding substances - Google Patents
Device and method for feeding substances Download PDFInfo
- Publication number
- EP2019209A1 EP2019209A1 EP08018633A EP08018633A EP2019209A1 EP 2019209 A1 EP2019209 A1 EP 2019209A1 EP 08018633 A EP08018633 A EP 08018633A EP 08018633 A EP08018633 A EP 08018633A EP 2019209 A1 EP2019209 A1 EP 2019209A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump chamber
- ridge
- chamber
- filter
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000126 substance Substances 0.000 title claims description 16
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 18
- 239000006072 paste Substances 0.000 claims abstract description 7
- 238000000605 extraction Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 16
- 230000009969 flowable effect Effects 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 6
- 239000013618 particulate matter Substances 0.000 claims description 6
- 210000000056 organ Anatomy 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 230000009182 swimming Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
- F04F1/02—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped using both positively and negatively pressurised fluid medium, e.g. alternating
Definitions
- the invention relates to a device for conveying flowable substances according to the preamble of claim 1 and a method thereof.
- a device for the pneumatic conveying of powdered substances is to be taken with a container connected to a supply line and a discharge for the conveyed, which is separated by at least one plate-like filter element from a space connected to a vacuum line; the width of the filter element corresponds at most to the diameter of the container.
- a substance of specific gravity of 0.1 to 15.0 g / cm 3 and with a particle size range between 0.1 to 300 .mu.m as conveyed is the ratio of the length of a pumping chamber forming container for temporarily receiving the conveyed to its inner Diameter between 0.5 and 10.0 and the plate-like filter element is provided between a vacuum line of a vacuum pump for sucking the conveyed material and the pumping chamber.
- a conveying gas line to a conveying gas source both in the vacuum line and in the conveying gas line an automatic locking member is arranged in each case.
- a conveyor device for plastic granules with a hose line protrudes, which dives at one end by means of a lance in a storage silo and the other protrudes through a filter support into a pipe socket which sits on the box-like inlet of a tangential intake opening of a plasticizing.
- a suction chamber about the filter support a likewise penetrated by the hose line cover assembly is provided with a suction chamber. The latter has suction openings directed towards the pipe socket and is in operative connection with a nozzle system to which compressed air or compressed gas can be supplied as working medium.
- Such conveying devices are tailored to a specific product, that is to say to the conveying of powders or the conveying of liquid.
- some diaphragm pumps can deliver powder and liquids, efficient powder handling is only possible to a limited extent, and only if the substance is specially adapted to the process.
- suspensions are difficult in that the powder in a suspension tends to deposit in the tubes or shutters, resulting in blockage of the delivery system.
- the inventor has set the goal to provide a device and a method of the type mentioned, which not only allow the delivery of products as different as liquids, powders and even suspensions or pastes with the same equipment, but also their volumetric dosage.
- the inventive device comprises in a vertically elongated cylindrical pump chamber for conveying liquids, powders, suspensions and pastes in the upper region thereof means for separating liquid and powder with a filter element and a floating body disposed above as a sealing element, wherein the pump chamber in its at least one feed line and at least one extraction line for liquid and / or powder and / or suspension or paste are connected to the lower region. Preference is given to several supply lines for several products.
- the filter element which is preferably designed as a filter plate and intersects the longitudinal axis of the device, is arranged between the latter and the pump chamber; the filter element remote end of the device according to the invention is associated with the conveying gas line and the vacuum line.
- a T-shaped connecting pipe with two connecting sections each containing a shut-off valve for the conveying gas line and the vacuum line should protrude from a top wall of the device.
- the pump chamber should be connected to at least one inlet valve and to an outlet valve for the substance.
- the device is designed as an axial ridge chamber of the pump chamber of the device and provided axially movable in this and is thereby sealingly surrounded by at least one annular seal of the pump chamber.
- This ring seal is according to the invention arranged in the cylindrical pump chamber itself or it extends in an annular end collar whose diameter is shorter than the diameter of the pump chamber.
- a ring section widening in a funnel-like manner should be formed between the end collar and the pump chamber, of which preferably a frame for axially guiding the movable ridge chamber projects.
- the filter element which is preferably designed as a filter plate
- the filter element is assigned to a base section of the ridge chamber of the device which is axially movable in the pump chamber.
- the filter plate is defined according to the invention on the perforated base portion of the ridge chamber and projects beyond this side;
- the - advantageously arranged in a holder - filter plate should be surrounded at its edge by at least one sealing bead, on the other hand, the inner surface of the pump chamber rests.
- an inclined to its longitudinal axis outlet pipe is arranged, which preferably connects to an axial connecting pipe of the base region of the pump chamber.
- at least one vibrator should be mounted on the outlet pipe.
- This inclined outlet pipe opens into a - preferably axially parallel to the pump chamber - delivery pipe;
- a closure element is associated with the mouth region and at least one outlet valve is assigned to the free end of the conveying tube.
- the closure element actuates a closing plate which, in the closed position, covers the mouth of the outlet tube. This closing plate is designed so that its position can be selected; by partially closing or opening after this choice, an exact dosage of the product can be adjusted.
- a pump chamber with a flat filter is attached tangentially to a dosing unit with venting possibility and the lateral pump body connected to the vacuum and pressure source; it contains a tangential entry with shut-off unit.
- a vibration device is attached laterally at the rejuvenation of the pump chamber.
- a sliding disc is provided, which can be opened completely or only up to a selectable gap size to allow dosing.
- the metering body is connected via a valve to a pressure source, and at the lower end of the metering a shut-off unit is provided. On the other side is an open valve to the atmosphere; So it is possible to vent.
- the pump body can now be filled according to the known principle / cycle with product and the sliding disc can be opened completely or only partially to dose or to drain product.
- the vibration unit can be activated. If the shut-off unit is opened, the product passes into the underlying container, a reactor, dryer o.ä. can be.
- the filter of the pump body can be cleaned by a pressure pulse, this possibility also exists with the dosing. If the contents of the pump body are emptied into the metering body, the displaced air volume escapes via the valve open to the atmosphere.
- the device is defined as a ridge frame in the head region of the pump chamber and at a distance from the filter element.
- This cage-like ridge frame consists of iw axis-parallel rods, which are optionally deformed at a distance from their free end in each case so that above a lower base portion extends an upper frame portion; its diameter is shorter than the diameter of the lower frame section.
- the filter element is to be stored as a filter plate in a frame and this fixed in the pump chamber between two container sections.
- the ridge frame is fixed firstward in a roof ring and provided at its lower end with an approximately parallel to the filter plate extending perforated plate or grid, a sieve or a filter. The latter is also in distance to the filter plate.
- the floating member is advantageously associated with a sealing ring in the ridge chamber or ridge frame; the open ring center can be closed by the axial approach of the floating organ or its ball end by its axial approach; Sealing ring and floating body form a valve of two bodies associated with each other, and the open center of the sealing ring can be covered by a ball end of the float, so the valve closed.
- the floating member has at least one ball end with the cross section of the ridge chamber corresponding diameter.
- the floating member on two ball ends which are connected by an axial rod as a tubular part - acting as a dumbbell.
- the lower ball end is with a diameter of 10 to 100 mm, preferably 20 to 80 mm equipped.
- the total length of the ridge chamber according to the invention consists of about two thirds of its lower portion and about one third of the upper Section together; the length of the pump chamber should preferably be between 10 and 1000 mm, preferably 50 and 800 mm or 60 and 100 mm with a diameter of 5 to 500 mm, preferably of 200 mm.
- the chamber according to the invention can be made of different materials for conveying aggressive or sensitive products such as stainless steel, Hastelloy, plastic, glass, enamel, and this with coating.
- the system according to the invention consists of a calibrated cylindrical chamber with a lateral access provided with a butterfly valve; another closure valve is attached to the bottom outlet side of the apparatus.
- a system for separating liquid and powder - a float with a filter - installed At the upper part of the apparatus is a system for separating liquid and powder - a float with a filter - installed.
- This system can be fixed or mobile.
- a lid closes the whole thing. It is connected to a pressure and a vacuum source, each equipped with shut-off valves.
- the lid includes an O-ring at the top, which the float applies to close the system when aspirating fluid.
- the system according to the invention works - controlled by a control box - automatically.
- the vacuum-side shut-off valve and the inlet valve are opened; with the help of the negative pressure, the liquid is sucked through the inlet pipe connected to the pump chamber.
- the liquid level rises until the float is lifted and abuts the sealing ring in the filter chamber to break the connection to the vacuum source; by the negative pressure, the tightness of the mating on the sealing ring and float is guaranteed.
- the inlet valve and the vacuum valve are closed and the pressure valve and the exhaust valve opened. Then the pump chamber is emptied by the liquid is pressed out by pressure. After a few seconds, the pressure and discharge valves close again and the cycle can begin again.
- the vacuum-side shut-off valve and the inlet valve are opened and sucked by means of the negative pressure, the powder through the connected to the pump chamber line system or inlet pipe.
- the pump chamber fills with powder.
- the filter in its upper area prevents fine particles from entering the vacuum system.
- the float remains in its low position as the velocity of the conveying gas is insufficient to raise it.
- the pump chamber is emptied by the pressure which simultaneously cleans the filter in countercurrent, and after a few seconds the pressure and discharge valves are closed again. The cycle can start again.
- a suspension If a suspension is to be conveyed, the latter is sucked in under reduced pressure through the pipe system or inlet pipe connected to the pump chamber, and by means of the filter in the upper part of the pump chamber the particles of the suspension are separated from the liquid and fouling of the float is prevented.
- the liquid level rises until the float is lifted and closes the open annulus of the sealing ring to break the connection to the vacuum source.
- the inlet valve and the vacuum valve are closed and the pressure valve and the outlet valve open.
- the pump chamber is emptied by the powder is pressed out by pressure, which simultaneously cleans the filter in countercurrent. After a few seconds will be Pressure valve and outlet valve closed again; the cycle can start again.
- This system is also intended to be used for the volumetric dosing of these different products; because the inventive system for separating liquid and powder can be moved in the interior of the pump chamber, so as to change the volume.
- the volume change allows the volumetric dosing.
- the device between the conveying of two different powders can be cleaned by the passage of liquid, but especially by suction of cleaning liquid.
- a method for the pneumatic conveying of flowable substances using the device according to the invention with both particulate matter and liquid or suspension or pastes are transferred simultaneously from one container to another or a mixture of liquid and particulate substances which is preferably from 0.01 to 99.99% liquid and 99% to 0.01% particulate, or from 5.0% to 95.0% liquid and 95.0% to 5.0% particulate matter.
- the cleaning can be done by operating the device in an empty state.
- the use of the subject invention is both in the pharmaceutical industry possible as well as in the chemical industry, paint and Lackesorb and in the food industry.
- a conveying device 30 connected to the latter by a vertical connecting pipe 12.
- a blocking element 16 is provided on a collar 14, above which the funnel-shaped base region 32 of a cylindrical pump chamber 34 of the conveying device 30 can be seen.
- From this goes - with the interposition of an inlet valve 18 - an inlet pipe or a supply line 20 from.
- This is connected to the conveyor 30 remote end to branch lines 22, 22 f , 22 s , each of which a storage container 24 for Powder or a storage container 26 are assigned for liquids or a storage container 28 for a suspension.
- branch lines 22, 22 f , 22 s each of which a storage container 24 for Powder or a storage container 26 are assigned for liquids or a storage container 28 for a suspension.
- one of those flowable substances flows in the direction of flow x of the conveying device 30.
- the resting on a frame 23 powder container 24 is here equipped with a funnel-shaped outlet socket 25, the other two storage containers 26, 28 are designed like a barrel.
- a perforated base portion 40 of the ridge chamber 38 is indicated, at the free mouth edge a transverse to the longitudinal axis
- a device arranged filter or a filter plate 44 connects.
- the latter is surrounded by a sealing bead 46, which, like that annular seal 47, conforms outwardly to the inner surface 33 of the pumping chamber 34 even during a vertical movement of the ridge chamber 38.
- a sealing ring 48 which bears against its inside surface 33, can be seen, whose open ring center 49 is assigned a vertically or axially guided floating member 50.
- the cross-section of its - connected by a rod 51 - ball ends 52 is greater than the inside diameter of the open ring center 49 of that Abdichtringes 48, so that accordingly Fig. 2 - Is able to be sealed by a ball end 52.
- Fig. 3 is the open state of the sealing ring 48 outlined; which forms a kind of valve with the floating member 50.
- the left-hand line 55 of the connecting pipe 54 is assigned as conveying gas line a compressed air or gas source 58 of more than 0.3 bar and serving as a vacuum line right line 56, a vacuum pump 60, for example, a negative pressure of ⁇ 500 mbar.
- the cylindrical pump chamber 34 of the conveyor 30 a of Fig. 2 goes up into a ring portion 37 of length a 1 with inwardly inclined wall surface, to which a cylindrical end collar 37 e of narrow diameter e 1 followed .
- the annular seal 47 sits for the ridge chamber 38 a within this end collar 37 e .
- the ridge chamber 38 a is here surrounded by a frame 62, the base feet 64 sit on the inclined outer surface of that ring portion 37.
- the base feet 64 protrude guide sections 65 and achsparallele rods 66 with radial struts 68, which carry the axially movable ridge chamber 38 a ; thanks to a - not shown - pneumatic drive, the latter can be adjusted in height in the frame 62.
- the filter plate 44 stored here in a mechanical support 42 which is encompassed by the above-described sealing bead 46.
- the base region 32 forms a tip 31, to which a removal line 21 with integrated outlet valve 19 connects.
- the inventive system for separating liquid and powder thus has a - in a guide aid movable up and down - floating organ or a float 50 with associated filter 44 in the upper region of the conveying device 30, 30 a , which is closed by a cover 36 , This is connected to at least one pressure source 58 and at least one vacuum source 60.
- a sealing ring 48 is provided below the lid 36 and in the upper region of the ridge chamber 38, 38 a , which the float 50 applies to close the system when sucking liquid in the flow direction x.
- the automatic system is controlled by a control box and works in the following way:
- This system is also to be used for the volumetric dosing of these different products; because the system according to the invention for the separation of liquid and powder is displaced in the interior 35 of the pump chamber 34, the volume of which changes.
- the sealing bead 46 and the annular seal 47 of the separation system allow its displacement while sealing the pump chamber 34 out, the volume change allows the volumetric dosing.
- the system according to the invention or its organs can be movable or fixed.
- the latter is an example Fig. 5, 6 Reference is made; in a can-like device 80 of the Fig. 5 stores a filter plate 44 a in one - outside of a cylinder wall 82nd the device 80 this surrounding - ring-like frame 84 which is held by two frame plates 86, 86 t . These collar from the side and can be so by laying on a not shown - abutment example, by means of screw holes 87 enforcing screws - set.
- a cylindrical container portion 88 On the upper frame plate 86 rests a cylindrical container portion 88, which is closed by a dome cover 90 with a central opening 91 of the diameter d 1 surrounding - Firstkragen 92.
- the latter is seated a roof ring 94 with outwardly inclined edge surface 95, which in turn contains a central opening 96 of small diameter d 2 , in which a Abdichtring 48 can be seen and above this a Zu Concretestutzen 98 with that opening 96 invitedtzendem interior for connection of the connection pipe 54 with the conveying gas line 55 and vacuum line 56, ie for positive and negative pressure.
- each bar 102 of the ridge frame 100 preferably corresponds approximately to the diameter b of the bar 50 connecting the two ball ends 52 of the float 50 of about 10 mm.
- the free ends 104 of the bars 102 which define an inner diameter f of a base section 105 of the length g of the ridge frame, are attached near the frame 84 and parallel to this perforated plate 110.
- the rod 102 At that distance g to its lower rod end 104 and the perforated plate 110 is the rod 102 to a short length g 1 as a rod portion 106 inclined at an angle w 1 of about 30 ° achs kauts, so that the inner diameter f 1 of the upward upper frame portion 108 of the axial length g 2 is shorter than the above-mentioned diameter f.
- the length g 2 here is also shorter than half the length g of the base portion 104.
- a likewise small length g 3 offer the end portions 107 of the bars 102, which are inclined in opposite directions to those bar sections 106 outwardly and on the roof ring 94 inside.
- the pump chamber 34 b of Fig. 6 differs from the pump chamber 34 a of Fig. 5 especially by a flat ridge cover 89, the inside of the sealing ring 48 is assigned; this is between the inclined end portions 107 of the ridge frame 100th
- the ball ends 52 and 52 t whose wall thickness measures, for example, 0.6 mm, lie loosely in the ridge frame 100, but may also abut the rods 102 in the base section 105 or in the upper frame section 108 on the inside in the region of their respective equator 53, so that the float 50 a is guided axially.
- When closing closes - as stated above and in Fig. 6 indicated - the upper end of the ball 52 to the sealing ring 48 and thus closes the open ring center 49.
- perforated plate or perforated grille 110 limits the sinking path of the float 50, 50 a .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Air Transport Of Granular Materials (AREA)
- Extraction Or Liquid Replacement (AREA)
- Jet Pumps And Other Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Basic Packing Technique (AREA)
- Saccharide Compounds (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Fördern von fließfähigen Stoffen nach dem Oberbegriff des Patentanspruches 1 sowie ein Verfahren dazu.The invention relates to a device for conveying flowable substances according to the preamble of claim 1 and a method thereof.
Der
Aus der
Nach dem Stand der Technik sind derartige Fördervorrichtungen auf ein bestimmtes Produkt zugeschnitten, also auf das Fördern von Pulvern oder das Fördern von Flüssigkeit. Zwar können einige Diaphragmapumpen Pulver und Flüssigkeiten fördern, jedoch ist ein effizientes Behandeln von Pulver nur in geringem Maße möglich sowie nur dann, wenn die Substanz das Pulver auf den Prozess besonders abgestimmt ist.According to the state of the art, such conveying devices are tailored to a specific product, that is to say to the conveying of powders or the conveying of liquid. Although some diaphragm pumps can deliver powder and liquids, efficient powder handling is only possible to a limited extent, and only if the substance is specially adapted to the process.
Das Fördern von Suspensionen ist insofern schwierig, als das Pulver in einer Suspension dazu neigt, sich in den Rohren oder Verschlussklappen abzulagern, was zu einer Blockierung des Fördersystems führt.The delivery of suspensions is difficult in that the powder in a suspension tends to deposit in the tubes or shutters, resulting in blockage of the delivery system.
In Kenntnis dieser Gegebenheiten hat sich der Erfinder das Ziel gesetzt, eine Vorrichtung und ein Verfahren der eingangs genannten Art zu schaffen, die nicht nur das Fördern so unterschiedlicher Produkte wie Flüssigkeiten, Pulver und sogar Suspensionen bzw. Pasten mit derselben Ausstattung ermöglichen, sondern auch deren volumetrische Dosierung.Knowing these facts, the inventor has set the goal to provide a device and a method of the type mentioned, which not only allow the delivery of products as different as liquids, powders and even suspensions or pastes with the same equipment, but also their volumetric dosage.
Zur Lösung dieser Aufgabe führt die Lehre des unabhängigen Anspruches; die Unteransprüche geben günstige Weiterbildungen an. Zudem fallen in den Rahmen der Erfindung alle Kombinationen aus zumindest zwei der in der Beschreibung, der Zeichnung und/oder den Ansprüchen offenbarten Merkmale. Bei angegebenen Benennungsbereichen sollen auch innerhalb der genannten Grenzen liegende Werte als Grenzwerte offenbart und beliebig einsetzbar sein.To achieve this object, the teaching of the independent claim; the dependent claims indicate favorable developments. In addition, all combinations of at least two of the features disclosed in the description, the drawings and / or the claims fall within the scope of the invention. For given naming ranges should also within the mentioned limits as limits and can be used arbitrarily.
Die erfindungsgemäße Vorrichtung weist in einer vertikal gestreckten zylindrischen Pumpenkammer zum Fördern von Flüssigkeiten, Pulver, Suspensionen und Pasten in deren oberen Bereich eine Einrichtung zum Trennen von Flüssigkeit und Pulver mit einem Filterelement und einem darüber angeordneten Schwimmorgan als Dichtelement auf, wobei an die Pumpenkammer in ihrem unteren Bereich zumindest eine Zuführleitung und wenigstens eine Entnahmeleitung für Flüssigkeit und/oder Pulver und/oder Suspension bzw. Paste angeschlossen sind. Bevorzugt werden mehrere Zuführleitungen für mehrere Produkte.The inventive device comprises in a vertically elongated cylindrical pump chamber for conveying liquids, powders, suspensions and pastes in the upper region thereof means for separating liquid and powder with a filter element and a floating body disposed above as a sealing element, wherein the pump chamber in its at least one feed line and at least one extraction line for liquid and / or powder and / or suspension or paste are connected to the lower region. Preference is given to several supply lines for several products.
Als günstig hat es sich erwiesen, dass das bevorzugt als Filterplatte gestaltete, die Längsachse der Einrichtung querende Filterelement zwischen dieser und der Pumpenkammer angeordnet ist; das dem Filterelement ferne Ende der erfindungsgemäßen Einrichtung ist der Fördergasleitung und der Vakuumleitung zugeordnet. Dazu soll von einer Kopfwand der Einrichtung ein T-förmiges Anschlussrohr mit zwei jeweils ein Absperrventil enthaltenden Anschlussabschnitten für die Fördergasleitung und die Vakuumleitung abragen. Anderseits soll die Pumpenkammer an zumindest ein Einlassventil sowie an ein Auslassventil für den Stoff angeschlossen sein.It has proved to be favorable that the filter element, which is preferably designed as a filter plate and intersects the longitudinal axis of the device, is arranged between the latter and the pump chamber; the filter element remote end of the device according to the invention is associated with the conveying gas line and the vacuum line. For this purpose, a T-shaped connecting pipe with two connecting sections each containing a shut-off valve for the conveying gas line and the vacuum line should protrude from a top wall of the device. On the other hand, the pump chamber should be connected to at least one inlet valve and to an outlet valve for the substance.
Als besonders günstig hat sich eine Ausgestaltung erwiesen, bei der die Einrichtung als axiale Firstkammer der Pumpenkammer der Vorrichtung ausgebildet sowie in dieser axial bewegbar vorgesehen und dabei von wenigstens einer Ringdichtung der Pumpenkammer dichtend umfangen ist. Diese Ringdichtung ist erfindungsgemäß in der zylindrischen Pumpenkammer selbst angeordnet oder sie verläuft in einem ringartigen Endkragen, dessen Durchmesser kürzer ist als der Durchmesser der Pumpenkammer.To be particularly favorable, an embodiment has been found, in which the device is designed as an axial ridge chamber of the pump chamber of the device and provided axially movable in this and is thereby sealingly surrounded by at least one annular seal of the pump chamber. This ring seal is according to the invention arranged in the cylindrical pump chamber itself or it extends in an annular end collar whose diameter is shorter than the diameter of the pump chamber.
Im letztgenannten Fall soll zwischen Endkragen und Pumpenkammer ein sich zu dieser trichterartig erweiternder Ringabschnitt angeformt sein, von dem bevorzugt ein Gestell zum axialen Führen der bewegbaren Firstkammer aufragt.In the latter case, a ring section widening in a funnel-like manner should be formed between the end collar and the pump chamber, of which preferably a frame for axially guiding the movable ridge chamber projects.
Im Rahmen der Erfindung liegt es, dass das -- wie gesagt: bevorzugt als Filterplatte gestaltete -- Filterelement einem Sockelabschnitt der in der Pumpenkammer axial beweglichen Firstkammer der Vorrichtung zugeordnet ist. Die Filterplatte ist erfindungsgemäß an dem perforierten Sockelabschnitt der Firstkammer festgelegt und überragt diese seitlich; dazu soll die -- vorteilhafterweise in einer Halterung angeordnete -- Filterplatte an ihrem Rand von zumindest einem Dichtungswulst umfangen sein, der anderseits der Innenfläche der Pumpenkammer anliegt.It is within the scope of the invention that the filter element, which is preferably designed as a filter plate, is assigned to a base section of the ridge chamber of the device which is axially movable in the pump chamber. The filter plate is defined according to the invention on the perforated base portion of the ridge chamber and projects beyond this side; For this purpose, the - advantageously arranged in a holder - filter plate should be surrounded at its edge by at least one sealing bead, on the other hand, the inner surface of the pump chamber rests.
Bei einer besonderen Ausgestaltung der beschriebenen Pumpenkammer ist an deren Auslaufende ein zu ihrer Längsachse geneigtes Auslassrohr angeordnet, das bevorzugt an ein axiales Anschlussrohr des Sockelbereiches der Pumpenkammer anschließt. Der besseren Förderung halber soll am Auslassrohr zumindest ein Vibrator angebracht sein. Dieses geneigte Auslassrohr mündet in ein -- bevorzugt zur Pumpenkammer achsparalleles -- Förderrohr; dem Mündungsbereich ist zudem ein Verschlusselement und dem freien Ende des Förderrohres wenigstens ein Auslassventil zugeordnet. Das Verschlusselement betätigt eine Schließplatte, welche in Schließstellung die Mündung des Auslassrohres überdeckt. Diese Schließplatte ist so ausgebildet, dass ihre Stellung gewählt werden kann; durch teilweises Schließen bzw. Öffnen nach dieser Wahl kann eine genaue Dosierung des Produktes eingestellt werden.In a particular embodiment of the pump chamber described at its outlet end an inclined to its longitudinal axis outlet pipe is arranged, which preferably connects to an axial connecting pipe of the base region of the pump chamber. For better promotion, at least one vibrator should be mounted on the outlet pipe. This inclined outlet pipe opens into a - preferably axially parallel to the pump chamber - delivery pipe; In addition, a closure element is associated with the mouth region and at least one outlet valve is assigned to the free end of the conveying tube. The closure element actuates a closing plate which, in the closed position, covers the mouth of the outlet tube. This closing plate is designed so that its position can be selected; by partially closing or opening after this choice, an exact dosage of the product can be adjusted.
Hier ist eine Pumpenkammer mit flachem Filter tangential an einer Dosiereinheit mit Entlüftungsmöglichkeit angebracht und der seitliche Pumpkörper an Vakuum- und Druckquelle angeschlossen; er enthält einen tangentialen Eintritt mit Absperreinheit. Seitlich an der Verjüngung der Pumpenkammer ist eine Vibrationseinrichtung angebracht. An der Stelle, an welcher der Pumpkörper in den Dosierkörper mündet, ist eine verschiebbare Scheibe vorgesehen, die komplett oder nur bis zu einer wählbaren Spaltgröße geöffnet werden kann, um ein Dosieren zu ermöglichen.Here a pump chamber with a flat filter is attached tangentially to a dosing unit with venting possibility and the lateral pump body connected to the vacuum and pressure source; it contains a tangential entry with shut-off unit. Laterally at the rejuvenation of the pump chamber a vibration device is attached. At the point at which the pump body opens into the dosing, a sliding disc is provided, which can be opened completely or only up to a selectable gap size to allow dosing.
Der Dosierkörper ist über ein Ventil an eine Druckquelle angeschlossen, und am unteren Ende des Dosierkörpers ist eine Absperreinheit vorgesehen. Auf der anderen Seite befindet sich ein zur Atmosphäre hin offenes Ventil; es ist also eine Entlüftung möglich. Der Pumpkörper kann nun nach dem bekannten Prinzip/Zyklus mit Produkt befüllt sowie die verschiebbare Scheibe komplett oder nur teilweise geöffnet werden, um zu dosieren oder um Produkt abzulassen. Um ein Feindosieren in den darunter liegenden Behälter zu ermöglichen, kann die Vibrationseinheit aktiviert werden. Wird die Absperreinheit geöffnet, gelangt das Produkt in den darunter liegenden Behälter, der ein Reaktor, Trockner o.ä. sein kann. Der Filter des Pumpkörpers kann durch einen Druckimpuls abgereinigt werden, diese Möglichkeit besteht auch beim Dosierkörper. Wird der Inhalt des Pumpkörpers in den Dosierkörper entleert, entweicht das verdrängte Luftvolumen über das zur Atmosphäre hin offene Ventil.The metering body is connected via a valve to a pressure source, and at the lower end of the metering a shut-off unit is provided. On the other side is an open valve to the atmosphere; So it is possible to vent. The pump body can now be filled according to the known principle / cycle with product and the sliding disc can be opened completely or only partially to dose or to drain product. To enable fine dosing into the underlying container, the vibration unit can be activated. If the shut-off unit is opened, the product passes into the underlying container, a reactor, dryer o.ä. can be. The filter of the pump body can be cleaned by a pressure pulse, this possibility also exists with the dosing. If the contents of the pump body are emptied into the metering body, the displaced air volume escapes via the valve open to the atmosphere.
Im Rahmen der Erfindung liegt eine weitere Ausgestaltung, bei der die Einrichtung als Firstgestell im Kopfbereich der Pumpenkammer und in Abstand zum Filterelement festgelegt ist. Dieses käfigartige Firstgestell besteht aus i.w. achsparallelen Stäben, die gegebenenfalls in Abstand zu ihrem freien Ende jeweils so verformt sind, dass oberhalb eines unteren Sockelabschnitts ein oberer Gestellabschnitt verläuft; dessen Durchmesser ist kürzer als der Durchmesser des unteren Gestellabschnittes. Als günstig hat es sich erwiesen, die Gesamtlänge des Firstgestells etwa zu zwei Dritteln aus ihrem unteren Gestellabschnitt und etwa zu einem Drittel aus dem oberen Gestellabschnitt bestehen zu lassen.In the context of the invention is a further embodiment, in which the device is defined as a ridge frame in the head region of the pump chamber and at a distance from the filter element. This cage-like ridge frame consists of iw axis-parallel rods, which are optionally deformed at a distance from their free end in each case so that above a lower base portion extends an upper frame portion; its diameter is shorter than the diameter of the lower frame section. As low, it has been proven to make the total length of the ridge frame about two-thirds from its lower frame portion and about one-third from the upper frame section.
Bei dieser Vorrichtung soll das Filterelement als Filterplatte in einem Rahmen gelagert und dieser in der Pumpenkammer zwischen zwei Behälterabschnitten festgelegt sein.In this device, the filter element is to be stored as a filter plate in a frame and this fixed in the pump chamber between two container sections.
Nach einem weiteren Merkmal der Erfindung ist das Firstgestell in einem Dachring firstwärts festgelegt sowie an seinem unteren Ende mit einem etwa parallel zur Filterplatte verlaufenden Lochblech oder -gitter, einem Sieb oder einem Filter versehen. Letzteres liegt zudem in Abstand zur Filterplatte.According to a further feature of the invention, the ridge frame is fixed firstward in a roof ring and provided at its lower end with an approximately parallel to the filter plate extending perforated plate or grid, a sieve or a filter. The latter is also in distance to the filter plate.
Zur Abdichtfunktion ist das Schwimmorgan vorteilhafterweise einem Abdichtring in der Firstkammer oder im Firstgestell zugeordnet; das offene Ringzentrum kann durch das axiale Heranführen des Schwimmorgans bzw. seines Kugelendes durch dessen axiales Heranführen geschlossen werden; Abdichtring und Schwimmorgan bilden ein Ventil aus zwei einander zugeordneten Körpern, und das offene Zentrum des Abdichtringes kann von einem Kugelende des Schwimmkörpers überdeckt, also das Ventil geschlossen, werden.For sealing function, the floating member is advantageously associated with a sealing ring in the ridge chamber or ridge frame; the open ring center can be closed by the axial approach of the floating organ or its ball end by its axial approach; Sealing ring and floating body form a valve of two bodies associated with each other, and the open center of the sealing ring can be covered by a ball end of the float, so the valve closed.
Bei einer anderen erfinderischen Ausgestaltung der Vorrichtung weist das Schwimmorgan wenigstens ein Kugelende mit dem Querschnitt der Firstkammer entsprechendem Durchmesser auf.In another inventive embodiment of the device, the floating member has at least one ball end with the cross section of the ridge chamber corresponding diameter.
In beiden beschriebenen Ausgestaltungen weist das Schwimmorgan zwei Kugelenden auf, die durch einen axialen Stab als rohrförmigem Teil -- wie eine Hantel wirkend -- verbunden sind.In both embodiments described, the floating member on two ball ends, which are connected by an axial rod as a tubular part - acting as a dumbbell.
Als günstig haben sich Durchmesser von 15 bis 90 mm, vorzugsweise 30 bis 70 mm, bei dem gegen das Vakuumsystem abdichtenden oberen Kugelende erwiesen, das untere Kugelende ist mit einem Durchmesser von 10 bis 100 mm, vorzugsweise 20 bis 80 mm, ausgestattet. Dazu setzt sich die Gesamtlänge der Firstkammer erfindungsgemäß aus etwa zwei Dritteln ihres unteren Abschnittes und etwa einem Drittel des oberen Abschnittes zusammen; die Länge der Pumpenkammer soll bevorzugt zwischen 10 und 1000 mm, vorzugsweise 50 und 800 mm bzw. 60 und 100 mm liegen bei einem Durchmesser von 5 bis 500 mm, vorzugsweise von 200 mm.As low diameter of 15 to 90 mm, preferably 30 to 70 mm, have proven in the sealing against the vacuum system upper ball end, the lower ball end is with a diameter of 10 to 100 mm, preferably 20 to 80 mm equipped. For this purpose, the total length of the ridge chamber according to the invention consists of about two thirds of its lower portion and about one third of the upper Section together; the length of the pump chamber should preferably be between 10 and 1000 mm, preferably 50 and 800 mm or 60 and 100 mm with a diameter of 5 to 500 mm, preferably of 200 mm.
Die erfindungsgemäße Kammer kann aus unterschiedlichen Materialien zum Fördern von aggressiven oder empfindlichen Produkten hergestellt werden wie Edelstahl, Hastelloy, Kunststoff, Glas, Emaille, und dies mit Beschichtung.The chamber according to the invention can be made of different materials for conveying aggressive or sensitive products such as stainless steel, Hastelloy, plastic, glass, enamel, and this with coating.
Das erfindungsgemäße System besteht aus einer kalibrierten, zylindrischen Kammer mit einem seitlichen Zugang, der mit einer Absperrklappe bzw. einem Verschlussventil ausgestattet ist; ein weiteres Verschlussventil ist an der bodenwärtigen Austrittseite des Apparates angebracht.The system according to the invention consists of a calibrated cylindrical chamber with a lateral access provided with a butterfly valve; another closure valve is attached to the bottom outlet side of the apparatus.
Am oberen Teil des Apparates ist ein System zum Trennen von Flüssigkeit und Pulver -- aus einem Schwimmer mit einem Filter -- installiert. Dieses System kann feststehend oder beweglich sein. Ein Deckel schließt das Ganze. Er ist mit einer Druck- und einer Unterdruckquelle verbunden, die jeweils mit Absperrventilen ausgestattet sind. Der Deckel umfasst am oberen Teil einen O-Ring, an welchen sich der Schwimmer anlegt, um das System beim Ansaugen von Flüssigkeit zu verschließen.At the upper part of the apparatus is a system for separating liquid and powder - a float with a filter - installed. This system can be fixed or mobile. A lid closes the whole thing. It is connected to a pressure and a vacuum source, each equipped with shut-off valves. The lid includes an O-ring at the top, which the float applies to close the system when aspirating fluid.
Das erfindungsgemäße System arbeitet -- durch einen Schaltkasten gesteuert -- automatisch. Zum Fördern von Flüssigkeit werden das unterdruckseitige Absperrventil und das Einlassventil geöffnet; mit Hilfe des Unterdrucks wird die Flüssigkeit durch das mit der Pumpenkammer verbundene Einlassrohr angesaugt. Das Flüssigkeitsniveau steigt bis der Schwimmer angehoben wird und sich an den Abdichtring in der Filterkammer anlegt, um die Verbindung zur Unterdruckquelle zu unterbrechen; durch den Unterdruck wird die Dichtigkeit der Paarung am Abdichtring und Schwimmer gewährleistet. Nach einem bestimmten Zeitraum werden das Einlassventil und das Unterdruckventil geschlossen sowie das Druckventil und das Auslassventil geöffnet. Dann wird die Pumpenkammer entleert, indem die Flüssigkeit mittels Druck herausgepresst wird. Nach einigen Sekunden werden Druck- und Auslassventile wieder geschlossen und der Zyklus kann erneut beginnen.The system according to the invention works - controlled by a control box - automatically. For conveying liquid, the vacuum-side shut-off valve and the inlet valve are opened; with the help of the negative pressure, the liquid is sucked through the inlet pipe connected to the pump chamber. The liquid level rises until the float is lifted and abuts the sealing ring in the filter chamber to break the connection to the vacuum source; by the negative pressure, the tightness of the mating on the sealing ring and float is guaranteed. After a certain period of time, the inlet valve and the vacuum valve are closed and the pressure valve and the exhaust valve opened. Then the pump chamber is emptied by the liquid is pressed out by pressure. After a few seconds, the pressure and discharge valves close again and the cycle can begin again.
Auch zum Fördern von Pulver werden erfindungsgemäß das unterdruckseitige Absperrventil und das Einlassventil geöffnet sowie mittels des Unterdruckes das Pulver durch das mit der Pumpenkammer verbundene Leitungssystem bzw. Einlassrohr angesaugt. Die Pumpenkammer füllt sich mit Pulver. Der Filter in deren oberem Bereich verhindert, dass feine Partikel in das Vakuumsystem gelangen. Der Schwimmer bleibt in seiner tiefen Stellung, da die Geschwindigkeit des Fördergases nicht ausreicht, ihn anzuheben. Ebenfalls hier werden nach einem bestimmten Zeitraum Einlassventil und Absperr- oder Unterdruckventil geschlossen und das Druckventil sowie das Auslassventil geöffnet; die Pumpenkammer wird durch den Druck entleert, der gleichzeitig den Filter im Gegenstrom reinigt, und nach einigen Sekunden werden Druck- und Auslassventil wieder geschlossen. Der Zyklus kann erneut beginnen.Also for conveying powder according to the invention, the vacuum-side shut-off valve and the inlet valve are opened and sucked by means of the negative pressure, the powder through the connected to the pump chamber line system or inlet pipe. The pump chamber fills with powder. The filter in its upper area prevents fine particles from entering the vacuum system. The float remains in its low position as the velocity of the conveying gas is insufficient to raise it. Also here are closed after a certain period inlet valve and shut-off or vacuum valve and the pressure valve and the exhaust valve open; the pump chamber is emptied by the pressure which simultaneously cleans the filter in countercurrent, and after a few seconds the pressure and discharge valves are closed again. The cycle can start again.
Soll eine Suspension gefördert werden, wird letztere mit Unterdruck durch das mit der Pumpenkammer verbundene Leitungssystem bzw. Einlassrohr angesaugt, und mittels des Filters im oberen Teil der Pumpenkammer werden die Partikel der Suspension von der Flüssigkeit getrennt sowie ein Verschmutzen des Schwimmers verhindert. Das Flüssigkeitsniveau steigt, bis der Schwimmer angehoben wird und den offenen Ringraum des Abdichtrings verschließt, um die Verbindung zur Unterdruckquelle zu unterbrechen. Nach einer bestimmten Wartezeit werden das Einlassventil sowie das Unterdruckventil geschlossen und das Druckventil sowie das Auslassventil geöffnet. Die Pumpenkammer wird entleert, indem das Pulver mittels Druck herausgepresst wird, der gleichzeitig den Filter im Gegenstrom reinigt. Nach wenigen Sekunden werden Druckventil und Auslassventil erneut geschlossen; der Zyklus kann wieder beginnen.If a suspension is to be conveyed, the latter is sucked in under reduced pressure through the pipe system or inlet pipe connected to the pump chamber, and by means of the filter in the upper part of the pump chamber the particles of the suspension are separated from the liquid and fouling of the float is prevented. The liquid level rises until the float is lifted and closes the open annulus of the sealing ring to break the connection to the vacuum source. After a certain waiting time, the inlet valve and the vacuum valve are closed and the pressure valve and the outlet valve open. The pump chamber is emptied by the powder is pressed out by pressure, which simultaneously cleans the filter in countercurrent. After a few seconds will be Pressure valve and outlet valve closed again; the cycle can start again.
Dieses System ist außerdem aufgabengemäß für das volumetrische Dosieren dieser unterschiedlichen Produkte heranzuziehen; denn das erfindungsgemäße System zur Trennung von Flüssigkeit und Pulver kann im Innenraum der Pumpenkammer verschoben werden, um so deren Volumen zu verändern.This system is also intended to be used for the volumetric dosing of these different products; because the inventive system for separating liquid and powder can be moved in the interior of the pump chamber, so as to change the volume.
In das Trennungssystem eingefügte O-Ringe erlauben ein Verschieben des Systems und gewähren gleichzeitig die Abdichtung des Systems zur Pumpenkammer hin, deren Volumenveränderung das volumetrische Dosieren ermöglicht. Von besonderer Bedeutung ist, dass die Vorrichtung zwischen dem Fördern zweier unterschiedlicher Pulver durch den Durchlauf von Flüssigkeit gereinigt zu werden vermag, vor allem aber durch Ansaugen von Reinigungsflüssigkeit.Inserted in the separation system O-rings allow a displacement of the system while allowing the seal of the system to the pump chamber, the volume change allows the volumetric dosing. Of particular importance is that the device between the conveying of two different powders can be cleaned by the passage of liquid, but especially by suction of cleaning liquid.
So liegt im Rahmen der Erfindung ein Verfahren zum pneumatischen Fördern fließfähiger Stoffe unter Verwendung der erfindungsgemäßen Vorrichtung, mit dem sowohl partikelförmige Stoffe als auch Flüssigkeit oder Suspension bzw. Pasten zeitgleich von einem Behälter in einen anderen überführt werden bzw. ein Gemisch aus flüssigen und partikelförmigen Stoffen gepumpt oder transportiert wird, das bevorzugt aus 0,01 bis 99,99 % flüssigen und 99 % bis 0,01 % partikelförmigen Stoffen besteht oder aus 5,0 % bis 95,0 % flüssigen und 95,0 % bis 5,0 % partikelförmigen Stoffen.Thus, in the context of the invention, a method for the pneumatic conveying of flowable substances using the device according to the invention, with both particulate matter and liquid or suspension or pastes are transferred simultaneously from one container to another or a mixture of liquid and particulate substances which is preferably from 0.01 to 99.99% liquid and 99% to 0.01% particulate, or from 5.0% to 95.0% liquid and 95.0% to 5.0% particulate matter.
Auch kann die Reinigung durch Betreiben der Vorrichtung in Leerzustand erfolgen.Also, the cleaning can be done by operating the device in an empty state.
Als günstig hat sich auch erwiesen, Stickstoff als Entleerungsgas einzusetzen und eine Inertatmosphäre während des Entleerungsvorganges zu schaffen.It has also proved to be beneficial to use nitrogen as a discharge gas and to create an inert atmosphere during the discharge process.
Der Einsatz des Erfindungsgegenstandes ist sowohl in der pharmazeutischen Industrie möglich als auch in der chemischen Industrie, der Farben- und Lackeproduktion und in der Lebensmittelindustrie.The use of the subject invention is both in the pharmaceutical industry possible as well as in the chemical industry, paint and Lackeproduktion and in the food industry.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt jeweils in schematischer Darstellung in
- Fig. 1:
- eine auf einem Aufnahmebehälter für fließfähige Stoffe angebrachte Vorrichtung zum pneumatischen Fördern der Stoffe in Seitenansicht;
- Fig. 2:
- die vergrößerte Fördervorrichtung der
Fig. 1 mit gegenüber dieser teilweise veränderten Details; - Fig. 3:
- einen Ausschnitt aus
Fig. 2 bei veränderter Einstellung einiger Elemente; - Fig. 4:
- einen anderen gegenüber
Fig. 1 ,2 geänderten Ausschnitt; - Fig. 5:
- eine Seitenansicht einer gegenüber
Fig. 1 anders gestalteten Fördervorrichtung;bis 4 - Fig. 6:
- eine Skizze zu einer Variante der Fördervorrichtung der
Fig. 5 in Seitenansicht.
- Fig. 1:
- a mounted on a receptacle for flowable materials device for pneumatically conveying the substances in side view;
- Fig. 2:
- the enlarged conveyor of the
Fig. 1 with respect to these partially modified details; - 3:
- a section from
Fig. 2 with modified setting of some elements; - 4:
- another opposite
Fig. 1 .2 modified section; - Fig. 5:
- a side view of one opposite
Fig. 1 to 4 differently shaped conveyor; - Fig. 6:
- a sketch of a variant of the conveying device of
Fig. 5 in side view.
Von der Firstfläche eines Reaktionsgefäßes oder Aufnahmebehälters 10 für fließfähige Stoffe ragt in
Der auf einem Gestell 23 ruhende Pulverbehälter 24 ist hier mit einem trichterförmigen Auslaufsockel 25 ausgestattet, die beiden anderen Speicherbehälter 26, 28 sind fassartig gestaltet.The resting on a
In den Innenraum 35 der rohrartigen und nach oben hin offenen Pumpenkammer 34 der Länge a von beispielsweise 50 bis 800 mm und des inneren Durchmessers d, dessen Maß vorzugsweise zwischen 10 mm bis 500 mm liegt, ist unter Bildung eines zylindrischen Spaltraumes 45 geringer Weite einemit einer horizontalen Kopfwand 36 als Deckel verseheneFirstkammer 38 engeren Außendurchmessers e in Pfeilrichtung t axial eingeschoben; zwischen letzterer und der Innenfläche 33 der Pumpenkammer 34 verläuft eine diametrale Ringdichtung 47. Unterhalb dieser ist ein perforierter Sockelabschnitt 40 der Firstkammer 38 angedeutet, an dessen freie Mündungskante ein quer zur Vorrichtungslängsachse A angeordneter Filter bzw. eine Filterplatte 44 anschließt. Letztere ist von einem Dichtungswulst 46 umgeben, derwie jene Ringdichtung 47 -- sich nach außen hin an die Innenfläche 33 der Pumpenkammer 34 auch bei einer Vertikalbewegung der Firstkammer 38 anschmiegt.Into the interior 35 of the tubular and upwardly
Nahe des Deckels bzw. der Kopfwand 36 der Firstkammer 38 ist ein -- deren Innenfläche 33 anliegender -- Abdichtring 48 zu erkennen, dessen offenem Ringzentrum 49 ein vertikal bzw. axial geführtes Schwimmorgan 50 zugeordnet ist. Der Querschnitt von dessen -- durch einen Stab 51 verbundenen--Kugelenden 52 ist größer als die lichte Weite des offenen Ringzentrums 49 jenes Abdichtringes 48, so dass diesesgemäß
Von der Kopfwand 36 der Firstkammer 38 ragt ein T-förmiges Anschlussrohr 54 für zwei Leitungen 55, 56 auf, in die jeweils ein Absperrventil 57, 57a integriert ist.From the
Bei der Fördervorrichtung 30a der
Die zylindrische Pumpenkammer 34 der Fördervorrichtung 30a der
Die Firstkammer 38a ist hier von einem Gestell 62 umgeben, dessen Sockelfüße 64 auf der geneigten Außenfläche jenes Ringabschnitts 37 sitzen. Von den Sockelfüßen 64 ragen Führungsprofile 65 bzw. achsparallele Stäbe 66 auf mit Radialstreben 68, welche die axial bewegbare Firstkammer 38a führen; dank eines -- nicht gezeigten -- pneumatischen Antriebs kann letztere in dem Gestell 62 höhenverstellt werden. Die Filterplatte 44 lagert hier in einer mechanischen Halterung 42, die von dem oben beschriebenen Dichtwulst 46 umfangen ist.The
Bei der Ausführung nach
Das erfindungsgemäße System zum Trennen von Flüssigkeit und Pulver weist also ein -- in einer Führungshilfe auf und ab bewegbares -- Schwimmorgan oder einen Schwimmer 50 mit zugeordnetem Filter 44 im oberen Bereich der Fördervorrichtung 30, 30a auf, die von einem Deckel 36 geschlossen ist. Dieser ist mit zumindest einer Druckquelle 58 und wenigstens einer Vakuumquelle 60 verbunden. Unterhalb des Deckels 36 bzw. im oberen Bereich der Firstkammer 38, 38a ist ein Abdichtungsring 48 vorgesehen, dem sich der Schwimmer 50 anlegt, um das System beim Ansaugen von Flüssigkeit in Fließrichtung x zu verschließen. Das automatisch arbeitende System wird dabei durch einen Schaltkasten gesteuert und funktioniert auf folgende Weise:The inventive system for separating liquid and powder thus has a - in a guide aid movable up and down - floating organ or a
-
Das vakuumseitige Absperrventil 57a und das Einlassventil 18 sind geöffnet;The vacuum-side shut-off
valve 57 a and theinlet valve 18 are opened; -
mittels des Vakuums wird die Flüssigkeit durch das mit der Pumpenkammer 34 verbundene Einlassrohr 20 angesaugt.by means of the vacuum, the liquid is sucked in through the
inlet pipe 20 connected to thepump chamber 34. -
Das Flüssigkeitsniveau steigt, bis der Schwimmer 50 angehoben wird und sich an den Abdichtring 48 in der Firstkammer 38, 38a anlegt, um die Verbindung zur Vakuumquelle 60 zu unterbrechen. Durch das Vakuum wird die Dichtigkeit der Paarung Abdichtungsring/Schwimmer 48/50 gewährleistet.The liquid level rises until the
float 50 is raised and abuts theAbdichtring 48 in the 38, 38 a , to break the connection to theridge chamber vacuum source 60. The vacuum ensures the tightness of the mating sealing ring /float 48/50. -
Nach einem bestimmten Zeitraum werden das Einlassventil 18 und das Unterdruckventil 57a geschlossen sowie das Druckventil 57 und das Auslassventil 19 geöffnet.After a certain period of time, the
inlet valve 18 and thevacuum valve 57 a are closed and thepressure valve 57 and theoutlet valve 19 are opened. -
die Pumpenkammer 34 wird entleert, indem die Flüssigkeit mittels Druck herausgepresst wird.The
pump chamber 34 is emptied by the liquid is pressed out by pressure. -
Nach einigen Sekunden werden Druckventil 57 sowie Auslassventil 19 wieder geschlossen und der Zyklus kann erneut beginnen.After a few
seconds pressure valve 57 andexhaust valve 19 are closed again and the cycle can start again.
-
Das vakuumseitige Absperrventil 57a und das Einlassventil 18 sind geöffnet;The vacuum-side shut-off
valve 57 a and theinlet valve 18 are opened; -
mittels des Vakuums wird das Pulver durch das mit der Pumpenkammer 34 verbundene Leitungssystem bzw. Einlassrohr 20 angesaugt.by means of the vacuum, the powder is sucked in through the
pipe system 34 connected to thepumping chamber 34. -
Die Pumpenkammer 34 füllt sich mit Pulver, und der Filter 44 in deren oberem Bereich verhindert, dass feine Partikel in das Vakuumsystem gelangen. Der Schwimmer 50 bleibt in seiner tiefen Stellung gemäß
Fig. 3 , da die Geschwindigkeit des Fördergases nicht ausreicht, um den Schwimmer 50 anzuheben.Thepump chamber 34 fills with powder, and thefilter 44 in its upper region prevents fine particles from entering the vacuum system. Thefloat 50 remains in its low position according toFig. 3 because the speed of the conveying gas is not sufficient to lift thefloat 50. -
Nach einem bestimmten Zeitraum werden das Einlassventil 18 und das Absperr- oder Vakuumventil 57a geschlossen und das Druckventil 58 sowie das Auslassventil 19 geöffnet.After a certain period of time, the
inlet valve 18 and the shut-off orvacuum valve 57 a are closed and thepressure valve 58 and theoutlet valve 19 are opened. -
Die Pumpenkammer 34 wird durch den Druck entleert, der gleichzeitig den Filter 44 im Gegenstrom reinigt.The
pump chamber 34 is emptied by the pressure, which simultaneously cleans thefilter 44 in countercurrent. -
Nach einigen Sekunden werden Druckventil 57 sowie Auslassventil 19 wieder geschlossen und der Zyklus kann erneut beginnen.After a few
seconds pressure valve 57 andexhaust valve 19 are closed again and the cycle can start again.
-
Das Absperr- oder Vakuumventil 57a und das Einlassventil 18 sind geöffnet;The shut-off or
vacuum valve 57 a and theinlet valve 18 are open; -
mittels des Vakuums wird die Suspension durch das mit der Pumpenkammer 34 verbundene Leitungssystem bzw. Einlassrohr 20 angesaugt.by means of the vacuum, the suspension is sucked in through the pipe system or
inlet pipe 20 connected to thepump chamber 34. -
Durch den Filter 44 am oberen Teil der Pumpenkammer 34 werden die Partikel der Suspension von der Flüssigkeit getrennt und ein Verschmutzen des Schwimmers 50 verhindert. Das Flüssigkeitsniveau steigt, bis der Schwimmer 50 angehoben wird und den offenen Ringraum 49 des Abdichtringes 48 verschließt, um die Verbindung zur Unterdruckquelle 60 zu unterbrechen.Through the
filter 44 at the upper part of thepump chamber 34, the particles of the suspension are separated from the liquid and fouling of thefloat 50 is prevented. The liquid level rises until thefloat 50 is raised and closes theopen annulus 49 of the sealingring 48 to break the connection to thevacuum source 60. -
Nach einem bestimmten Zeitraum werden das Einlassventil 18 sowie das Vakuumventil 57a geschlossen und das Druckventil 58 sowie das Auslassventil 19 geöffnet.After a certain period of time, the
inlet valve 18 and thevacuum valve 57 a are closed and thepressure valve 58 and theoutlet valve 19 are opened. -
Die Pumpenkammer 34 wird entleert, indem das Pulver mittels Druck herausgepresst wird, der gleichzeitig den Filter 44 im Gegenstrom reinigt.The
pump chamber 34 is emptied by the powder is pressed out by pressure, which simultaneously cleans thefilter 44 in countercurrent. -
Nach einigen Sekunden werden Druckventil 57 und Auslassventil 19 wieder geschlossen und der Zyklus kann erneut beginnen.After a few
seconds pressure valve 57 andexhaust valve 19 are closed again and the cycle can start again.
Dieses System ist außerdem für das volumetrische Dosieren dieser unterschiedlichen Produkte heranzuziehen; denn das erfindungsgemäße System zur Trennung von Flüssigkeit und Pulver wird im Innenraum 35 der Pumpenkammer 34 verschoben, deren Volumen sich verändert.This system is also to be used for the volumetric dosing of these different products; because the system according to the invention for the separation of liquid and powder is displaced in the
Der Dichtungswulst 46 und die Ringdichtung 47 des Trennungssystems erlauben dessen Verschieben bei gleichzeitiger Abdichtung zur Pumpenkammer 34 hin, deren Volumenveränderung das volumetrische Dosieren ermöglicht.The sealing
Bei der Ausgestaltung der Fördervorrichtung 30b der
Das erfindungsgemäße System bzw. seine Organe kann/können beweglich sein oder aber feststehend. Zu letzterem sei beispielhaft auf
Auf der oberen Rahmenplatte 86 ruht ein zylindrischer Behälterabschnitt 88, der durch einen Domdeckel 90 miteine zentrische Öffnung 91 des Durchmessers d1 umgebenden-- Firstkragen 92 verschlossen ist. Letzterem sitzt ein Dachring 94 mit nach außen abwärts geneigter Kantenfläche 95 auf, der seinerseits eine zentrische Öffnung 96 geringen Durchmessers d2 enthält, in welcher ein Abdichtring 48 zu erkennen ist sowie über diesem ein Zuführstutzen 98 mit jene Öffnung 96 fortsetzendem Innenraum zum Anschluss des Anschlussrohres 54 mit den von Fördergasleitung 55 und Vakuumleitung 56, also für Über- und Unterdruck.On the
In der unteren Rahmenplatte 86t lagert ein unterer Behälterabschnitt 88t als zylindrische Kammer, in dessen/deren Innenraum 35a die hier nicht erkennbaren Zuführ- und Entnahmeleitungen 20 bzw. 21 münden; die Behälterabschnitte 88, 88t ergeben eine zylindrische Kammer 34a mit nicht bewegbarer Filterplatte 44a, oberhalb deren sich ein ebenfalls nicht bewegbares axiales Firstgestell 100 aus -- hier vier -- vertikal verlaufenden Stäben 102 erstreckt, das dem Dachring 94 innenseitig zugeordnet ist. Der Durchmesser b1 jedes Stabes 102 des Firstgestells 100 entspricht bevorzugt etwa dem Durchmesser b des die beiden Kugelenden 52 verbindenden Stabes 51 des Schwimmers 50 von etwa 10 mm.In the
An die -- einen inneren Durchmesser f eines Sockelabschnitts 105 der Länge g des Firstgestells bestimmendenfreien Enden 104 der Stäbe 102 ist nahe dem Rahmen 84 und parallel zu diesem en Lochblech 110 angefügt. In jenem Abstand g zu seinem unteren Stabende 104 bzw. dem Lochblech 110 ist der Stab 102 auf eine kurze Länge g1 als Stababschnitt 106 in einem Winkel w1 von etwa 30° achswärts geneigt, so dass der innere Durchmesser f1 des nach oben folgenden oberen Gestellabschnitts 108 der axialen Länge g2 kürzer ist als der oben erwähnte Durchmesser f. Die Länge g2 ist hier im übrigen kürzer als die halbe Länge g des Sockelabschnitts 104. Eine ebenfalls geringe Länge g3 bieten die Endabschnitte 107 der Stäbe 102 an, die gegenläufig zu jenen Stababschnitten 106 nach außen geneigt und am Dachring 94 innenseitig angeordnet sind.The free ends 104 of the
Die Pumpenkammer 34b der
Im Firstgestell 100 der
Die Kugelenden 52 bzw. 52t, deren Wanddicke beispielsweise 0,6 mm misst, liegen lose im Firstgestell 100, können aber auch im Bereich ihres jeweiligen Äquators 53 gegebenenfalls den Stäben 102 im Sockelabschnitt 105 bzw. im oberen Gestellabschnitt 108 innenseitig anliegen, so dass der Schwimmer 50a axial geführt wird. Beim Schließvorgang legt sich -- wie oben schon dargelegt und in
Claims (45)
dadurch gekennzeichnet,
dass in einer vertikal gestreckten zylindrischen Pumpenkammer (34, 34a, 34b) zum pneumatischen Fördern von Flüssigkeiten, Pulver, Suspensionen und Pasten in deren oberen Bereich eine Einrichtung (38, 38a, 100) zum Trennen von Flüssigkeit und Pulver mit einem Filterelement (44, 44a) und einem darüber angeordneten Schwimmorgan (50, 50a) als Dichtelement angebracht ist, wobei die Pumpenkammer in ihrem unteren Bereich an zumindest eine Zuführleitung (20) und wenigstens eine Entnahmeleitung (12, 21) für Flüssigkeit und/oder Pulver und/oder Suspension bzw. Paste angeschlossen ist.Device for conveying flowable substances with a container (34, 34 a , 34 b ) connected on the one hand to a vacuum line (56) and a conveying gas line (55) using at least one filter (44, 44 a ), wherein the container has a feed line (20 ) as well as a removal line (21) for the substance are assigned,
characterized,
in that in a vertically elongated cylindrical pump chamber (34, 34 a , 34 b ) for the pneumatic conveying of liquids, powders, suspensions and pastes in the upper region thereof means (38, 38 a , 100) for separating liquid and powder with a filter element (44, 44 a ) and arranged above a floating member (50, 50 a ) is attached as a sealing element, wherein the pump chamber in its lower part to at least one supply line (20) and at least one extraction line (12, 21) for liquid and / or Powder and / or suspension or paste is connected.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006005190 | 2006-02-02 | ||
DE102006007277A DE102006007277A1 (en) | 2006-02-02 | 2006-02-15 | Apparatus and method for conveying substances |
EP07703136A EP1982074B1 (en) | 2006-02-02 | 2007-01-30 | Device, and method for feeding substances |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07703136A Division EP1982074B1 (en) | 2006-02-02 | 2007-01-30 | Device, and method for feeding substances |
Publications (2)
Publication Number | Publication Date |
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EP2019209A1 true EP2019209A1 (en) | 2009-01-28 |
EP2019209B1 EP2019209B1 (en) | 2009-12-02 |
Family
ID=37967437
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07703136A Active EP1982074B1 (en) | 2006-02-02 | 2007-01-30 | Device, and method for feeding substances |
EP08018633A Active EP2019209B1 (en) | 2006-02-02 | 2007-01-30 | Device and method for feeding substances |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07703136A Active EP1982074B1 (en) | 2006-02-02 | 2007-01-30 | Device, and method for feeding substances |
Country Status (6)
Country | Link |
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US (2) | US8157484B2 (en) |
EP (2) | EP1982074B1 (en) |
CN (2) | CN101469724B (en) |
AT (2) | ATE451555T1 (en) |
DE (3) | DE102006007277A1 (en) |
WO (1) | WO2007088022A1 (en) |
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GB2457490A (en) * | 2008-02-15 | 2009-08-19 | Wright Machinery Ltd | Tubular conveyor for conveying bagged foodstuff |
US8529160B2 (en) * | 2008-02-19 | 2013-09-10 | Steven Richard Ambriz | Bulk abrasive hopper |
US20120138191A1 (en) * | 2010-12-03 | 2012-06-07 | Jack Harris | System for delivering solid particulate matter for loading |
US9861027B2 (en) | 2010-12-08 | 2018-01-09 | Bayer Cropscience, Lp | Seed treatment systems and methods |
US9959511B2 (en) | 2010-12-08 | 2018-05-01 | Bayer Cropscience Lp | Retail point seed treatment systems and methods |
US9877424B2 (en) * | 2010-12-08 | 2018-01-30 | Bayer Cropscience, Lp | Seed treatment facilities, methods and apparatus |
DE102013218326A1 (en) * | 2013-09-12 | 2015-03-12 | Gema Switzerland Gmbh | Powder supply device for a powder coating system |
CN103708228A (en) * | 2013-12-18 | 2014-04-09 | 镇江立达纤维工业有限责任公司 | Novel powder pumping machine |
CA2904783C (en) | 2014-11-04 | 2020-07-14 | Cnh Industrial Canada, Ltd. | Tank pressurization control for air carts |
US11707771B2 (en) | 2019-04-05 | 2023-07-25 | Baxter Healthcare Sa | Cleaning process for a powder transfer system |
CN110608051A (en) * | 2019-09-26 | 2019-12-24 | 江苏大成轨道科技有限公司 | Novel axial coupling assembling |
KR102639581B1 (en) * | 2022-12-23 | 2024-02-22 | 이강진 | Vacuum type powder transfer apparatus for easy cleaning |
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-
2006
- 2006-02-15 DE DE102006007277A patent/DE102006007277A1/en not_active Withdrawn
-
2007
- 2007-01-30 AT AT07703136T patent/ATE451555T1/en active
- 2007-01-30 US US12/278,271 patent/US8157484B2/en active Active
- 2007-01-30 AT AT08018633T patent/ATE450713T1/en active
- 2007-01-30 WO PCT/EP2007/000782 patent/WO2007088022A1/en active Application Filing
- 2007-01-30 EP EP07703136A patent/EP1982074B1/en active Active
- 2007-01-30 CN CN200910001421.5A patent/CN101469724B/en active Active
- 2007-01-30 CN CN200780011434.XA patent/CN101410629B/en active Active
- 2007-01-30 EP EP08018633A patent/EP2019209B1/en active Active
- 2007-01-30 DE DE502007002195T patent/DE502007002195D1/en active Active
- 2007-01-30 DE DE502007002258T patent/DE502007002258D1/en active Active
-
2009
- 2009-02-25 US US12/392,834 patent/US20090162150A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
US20090180899A1 (en) | 2009-07-16 |
DE502007002195D1 (en) | 2010-01-14 |
EP1982074A1 (en) | 2008-10-22 |
EP2019209B1 (en) | 2009-12-02 |
CN101410629B (en) | 2013-05-08 |
WO2007088022A1 (en) | 2007-08-09 |
CN101410629A (en) | 2009-04-15 |
ATE450713T1 (en) | 2009-12-15 |
CN101469724B (en) | 2013-05-08 |
CN101469724A (en) | 2009-07-01 |
ATE451555T1 (en) | 2009-12-15 |
EP1982074B1 (en) | 2009-12-09 |
US20090162150A1 (en) | 2009-06-25 |
US8157484B2 (en) | 2012-04-17 |
DE102006007277A1 (en) | 2007-08-09 |
DE502007002258D1 (en) | 2010-01-21 |
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