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EP0870924A2 - Feeding device with dosing pumps - Google Patents

Feeding device with dosing pumps Download PDF

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Publication number
EP0870924A2
EP0870924A2 EP98103870A EP98103870A EP0870924A2 EP 0870924 A2 EP0870924 A2 EP 0870924A2 EP 98103870 A EP98103870 A EP 98103870A EP 98103870 A EP98103870 A EP 98103870A EP 0870924 A2 EP0870924 A2 EP 0870924A2
Authority
EP
European Patent Office
Prior art keywords
plates
pump
suction
piston
piston rod
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.)
Withdrawn
Application number
EP98103870A
Other languages
German (de)
French (fr)
Other versions
EP0870924A3 (en
Inventor
Oswald Scherer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wiwa Wilhelm Wagner GmbH and Co KG
Original Assignee
Wiwa Wilhelm Wagner GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wiwa Wilhelm Wagner GmbH and Co KG filed Critical Wiwa Wilhelm Wagner GmbH and Co KG
Publication of EP0870924A2 publication Critical patent/EP0870924A2/en
Publication of EP0870924A3 publication Critical patent/EP0870924A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/144—Adaptation of piston-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/129—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers
    • F04B9/131—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members
    • F04B9/133—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting elastic-fluid motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Definitions

  • the invention relates to a conveyor with metering pumps for the removal of materials from containers, in particular for 2-component systems, which are powered by an air motor is drivable with one arranged in a pump cylinder and movable back and forth by means of a piston rod Piston and suction and connected to the pump cylinder Output lines, with one at each pump cylinder end Intake and outlet line is connected, one in each inlet and outlet line in the same flow direction Acting check valve is switched on, the intake lines and output lines in the flow direction connected before or after the check valves are and the air motor with its drive piston in axial Extension of the piston rod of the metering pump arranged is.
  • the invention has for its object a conveyor with dosing pumps, especially for the promotion of two or more components, so that they form one simple to set up and therefore inexpensive to manufacture is subject to little wear and tear others easy to assemble and disassemble.
  • a metering pump designed according to the invention is thus the piston rod of the pump cylinder directly with the piston rod connected to the air motor so that forces from the air motor introduced into the dosing pump without any tilting moment will.
  • the housing of the air motor is rigid with that Housing of the metering pump connected so that the piston rods of air motor and metering pump are coaxial.
  • the packs are subject to less wear.
  • connection holes are formed directly in the plates, whereby advantageously also the check valves directly attached to the plates.
  • the plates themselves are through Tie rods connected together so that the exchange of the Pump cylinders, pistons as well as packings by disassembly only fewer parts can be reached.
  • the check valves are advantageously arranged so that these are parallel to each other, with corresponding Arrangement of the metering pump unit is achieved close the check valves solely due to gravity. This has the advantage that additional springs etc. can be dispensed with.
  • An embodiment of the invention is based on the drawing described below, which is a metering pump unit, partly in section, shows.
  • the dosing pump unit shown in the drawing is used for conveying two material components in containers 1, 2 are delivered. One is placed in each of these containers Line 32, each in two suction lines 3, 4th divides. These suction lines 3, 4 are with the metering pump unit 5 connected.
  • Each metering pump unit is formed from two plates 6, 7, which are connected by tie rods 8. Between the plates 6, 7, a pump cylinder 9 is clamped and sealed against the plates 6, 7 by means of seals 10. A piston 11 is arranged in the pump cylinder, on both sides each has a piston rod 12, 13.
  • the piston rod 12 or 13 of the metering pump 5 is directly connected to the piston rod 23 of an air motor 24.
  • This air motor is formed by two plates 25, 26 between which a cylinder 27 is clamped.
  • the Plates 25, 26 are connected to one another by tension rods 28.
  • the plates 21 and 26 of the air motor are via spacer elements 31 rigid with the plates 6, 7 of the metering pump 5 connected.
  • the air motor reverses itself, i. H. when the respective end position of the piston 29 is reached a two-way valve 30 switched accordingly.
  • the dosing pump works as follows.
  • the piston 11 is off the position shown moved to the left, so via the suction line 3 and the check valve 16 material conveyed from the container 1, 2. That in the pump cylinder 9 located material is to the left via the bore 14, the Check valve 16 pushed into the outlet line 20, 22, the check valve 15 a return flow of the material prevented in the container 1.
  • the piston 11 has the left one End position reached, this is achieved by the air motor 24 moved in the opposite direction, then via the suction lines 4 and the check valve 15 material from the Container 1, 2 is sucked.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Accessories For Mixers (AREA)

Abstract

The dosing pump (5) is used to extract materials, which especially have two components, from containers (1,2), and can be driven by a pneumatic motor (24). It has a piston (11) which is moved to and fro in a cylinder (9) by a connecting rod (12,13). Each end of the pump cylinder is connected to a suction pipe (3,4) and a discharge pipe (20,21). Each pipe has a check valve (15-18), and each valve works in the same direction of flow. The suction pipes are connected to one another upstream of their valves, and the discharge pipes are connected together downstream from their valves. The drive piston (29) of the motor is arranged in the axial extension of the connecting rod.

Description

Die Erfindung betrifft eine Fördereinrichtung mit Dosierpumpen für die Entnahme von Materialien aus Behältern, insbesondere für 2-Komponenten-Anlagen, welche von einem Luftmotor antreibbar ist, mit einem in einem Pumpenzylinder angeordneten und mittels einer Kolbenstange hin und her beweglichen Kolben und mit dem Pumpenzylinder verbundenen Ansaug- und Ausgangsleitungen, wobei an jedem Pumpenzylinderende je eine Ansaug- und Ausgangsleitung angeschlossen ist, in jede Ansaug- und Ausgangsleitung je ein in gleicher Strömungsrichtung wirkendes Rückschlagventil eingeschaltet ist, die Ansaugleitungen und Ausgangsleitungen jeweils in Strömungsrichtung vor bzw. nach den Rückschlagventilen miteinander verbunden sind und der Luftmotor mit seinem Antriebskolben in axialer Verlängerung der Kolbenstange der Dosierpumpe angeordnet ist.The invention relates to a conveyor with metering pumps for the removal of materials from containers, in particular for 2-component systems, which are powered by an air motor is drivable with one arranged in a pump cylinder and movable back and forth by means of a piston rod Piston and suction and connected to the pump cylinder Output lines, with one at each pump cylinder end Intake and outlet line is connected, one in each inlet and outlet line in the same flow direction Acting check valve is switched on, the intake lines and output lines in the flow direction connected before or after the check valves are and the air motor with its drive piston in axial Extension of the piston rod of the metering pump arranged is.

Diese Materialien werden im Anschluß an die Dosierpumpe in einem Statik- oder Dynamikmischer gemischt und der weiteren Verwendung zugeführt, beispielsweise einer Spritzpistole. Als Luftmotor dient eine Kolben-Zylinder-Einheit, die bei Erreichen der jeweiligen Kolbenendstellung automatisch umgeschaltet wird, so daß eine im wesentlichen ununterbrochene Kolbenstangenbewegung erhalten wird. Dieser Luftmotor treibt dann die Dosierpumpen an, wobei bei den bekannten Dosierpumpen, die zwei oder mehr verschiedene Materialien befördern, Kippmomente, die den Verschleiß der Dosierpumpen stark mitbestimmen, nicht zu vermeiden sind. Darüber hinaus sind diese bekannten Dosierpumpen auch teuer in der Herstellung und haben einen relativ hohen Wartungsaufwand.These materials are used in connection with the dosing pump one static or dynamic mixer and the other Use supplied, for example a spray gun. As Air motor serves as a piston-cylinder unit when reached the respective piston end position automatically switched is so that a substantially continuous piston rod movement is obtained. This air motor then drives the metering pumps, with the known metering pumps, that carry two or more different materials, tilting moments, which strongly influence the wear of the dosing pumps, cannot be avoided. In addition, these are well known Dosing pumps are also expensive to manufacture and have a relatively high level of maintenance.

Der Erfindung liegt die Aufgabe zugrunde, eine Fördereinrichtung mit Dosierpumpen, insbesondere für die Förderung von zwei oder mehr Komponenten, so auszubilden, daß diese zum einen einfach im Aufbau und damit kostengünstig in der Herstellung ist, nur einem geringen Verschleiß unterliegt und zum anderen einfach zu montieren wie auch zu demontieren ist.The invention has for its object a conveyor with dosing pumps, especially for the promotion of two or more components, so that they form one simple to set up and therefore inexpensive to manufacture is subject to little wear and tear others easy to assemble and disassemble.

Diese Aufgabe wird erfindunqsgemäß mit den Merkmalen des Anspruches 1 gelöst.This object is achieved according to the invention with the features of the claim 1 solved.

Bei einer erfindungsgemäß ausgebildeten Dosierpumpe ist somit die Kolbenstange des Pumpenzylinders unmittelbar mit der Kolbenstange des Luftmotors verbunden, so daß Kräfte vom Luftmotor in die Dosierpumpe ohne jegliches Kippmoment eingeleitet werden. Das Gehäuse des Luftmotors ist dabei starr mit dem Gehäuse der Dosierpumpe verbunden, so daß die Kolbenstangen von Luftmotor und Dosierpumpe koaxial liegen. Die Packungen unterliegen hierbei einem geringeren Verschleiß.In a metering pump designed according to the invention is thus the piston rod of the pump cylinder directly with the piston rod connected to the air motor so that forces from the air motor introduced into the dosing pump without any tilting moment will. The housing of the air motor is rigid with that Housing of the metering pump connected so that the piston rods of air motor and metering pump are coaxial. The packs are subject to less wear.

Aufgrund dieser koaxialen Anordnung von Dosierpumpen und Luftmotor können theoretisch beliebig viele Dosierpumpen von einem Luftmotor angetrieben werden. In der Praxis werden dies in der Regel jedoch zwei oder drei sein, wobei beim Einsatz von zwei Dosierpumpen diese beiderseits des Luftmotors angeordnet werden. Dies hat den weiteren Vorteil, daß die Kolben-Pumpen-Anordnung bei einer Dosierpumpe ausgetauscht werden kann, ohne daß der Luftmotor oder die andere Dosierpumpe demontiert werden muß. Dieser Austausch von Pumpenzylinder und Kolben wird beispielsweise bei deren Verschleiß oder dann vorgenommen, wenn andere Mischungverhältnisse gewünscht werden.Due to this coaxial arrangement of metering pumps and Air motors can theoretically use any number of metering pumps from be driven by an air motor. In practice, this will be usually be two or three, however, when used of two metering pumps arranged on both sides of the air motor will. This has the further advantage that the piston-pump arrangement with a dosing pump can without dismantling the air motor or the other metering pump must become. This exchange of pump cylinders and Piston becomes, for example, when they wear out or then made when other mixing ratios are desired.

Durch die Ausbildung der Dosierpumpen mittels zweier Platten, die den Pumpenzylinder einschließen, ist ein äußerst einfacher Aufbau der Dosierpumpe gewährleistet. Die Anschlußbohrungen werden unmittelbar in den Platten ausgebildet, wobei vorteilhaft die Rückschlagventile gleichfalls unmittelbar an den Platten befestigt werden. Die Platten selber sind durch Spannstäbe miteinander verbunden, so daß der Austausch der Pumpenzylinder, Kolben wie auch Packungen durch Demontage nur weniger Teile erreicht werden kann.By designing the dosing pumps using two plates, which enclose the pump cylinder is an extremely simple one Construction of the metering pump guaranteed. The connection holes are formed directly in the plates, whereby advantageously also the check valves directly attached to the plates. The plates themselves are through Tie rods connected together so that the exchange of the Pump cylinders, pistons as well as packings by disassembly only fewer parts can be reached.

Vorteilhaft werden die Rückschlagventile so angeordnet, daß diese parallel zueinander liegen, wobei bei entsprechender Anordnung der Dosierpumpen-Einheit erreicht wird, daß sich die Rückschlagventile allein aufgrund der Schwerkraft schließen. Dies hat den Vorteil, daß auf zusätzliche Federn etc. verzichtet werden kann.The check valves are advantageously arranged so that these are parallel to each other, with corresponding Arrangement of the metering pump unit is achieved close the check valves solely due to gravity. This has the advantage that additional springs etc. can be dispensed with.

Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnung nachstehend beschrieben, die eine Dosierpumpen-Einheit, teilweise im Schnitt, zeigt.An embodiment of the invention is based on the drawing described below, which is a metering pump unit, partly in section, shows.

Die in der Zeichnung dargestellte Dosierpumpen-Einheit dient zur Förderung von zwei Materialkomponenten, die in Behältern 1, 2 angeliefert werden. In diese Behälter taucht jeweils eine Leitung 32, die sich in jeweils zwei Ansaugleitungen 3, 4 aufteilt. Diese Ansaugleitungen 3, 4 sind mit der Dosierpumpen-Einheit 5 verbunden. The dosing pump unit shown in the drawing is used for conveying two material components in containers 1, 2 are delivered. One is placed in each of these containers Line 32, each in two suction lines 3, 4th divides. These suction lines 3, 4 are with the metering pump unit 5 connected.

Jede Dosierpumpen-Einheit ist aus zwei Platten 6, 7 gebildet, die durch Spannstäbe 8 miteinander verbunden sind. Zwischen den Platten 6, 7 ist ein Pumpenzylinder 9 eingespannt und mittels Dichtungen 10 gegenüber den Platten 6, 7 abgedichtet. Im Pumpenzylinder ist ein Kolben 11 angeordnet, der beidseitig je eine Kolbenstange 12, 13 hat.Each metering pump unit is formed from two plates 6, 7, which are connected by tie rods 8. Between the plates 6, 7, a pump cylinder 9 is clamped and sealed against the plates 6, 7 by means of seals 10. A piston 11 is arranged in the pump cylinder, on both sides each has a piston rod 12, 13.

In den Platten 6, 7 sind Bohrungen 14 ausgebildet, die die Ansaugleitungen 3, 4 mit dem Innern des Pumpenzylinders 9 verbinden. In diese Bohrungen 14 sind Rückschlagventile 15, 16, 17 und 18 eingesetzt, die parallel zueinander angeordnet sind und zwar derart, daß die Ventilkugeln 19 bei horizontaler Anordnung der Dosierpumpen-Einheit allein aufgrund der Schwerkraft auf ihrem Ventilsitz aufliegen. Die Rückschlagventile 15, 16 sind den Ansaugleitungen 3, 4 zugeordnet, während die anderen Rückschlagventile 17, 18 den Ausgangsleitungen 20, 21 Zugeordnet sind. Diese Ausgangsleitungen 20, 21 gehen in eine gemeinsame Leitung 22 über, die zu einem nicht dargestellten Mischer führt, in dem die beiden Materialkomponenten miteinander gemischt werden. Dem Mischer nachgeschaltet ist dann beispielsweise eine Farbspritzpistole.In the plates 6, 7 holes 14 are formed, which the Intake lines 3, 4 with the inside of the pump cylinder 9 connect. In these bores 14 there are check valves 15, 16, 17 and 18 used, which are arranged parallel to each other are such that the valve balls 19 at a horizontal Arrangement of the metering pump unit based solely on the Gravity rests on your valve seat. The check valves 15, 16 are assigned to the suction lines 3, 4, while the other check valves 17, 18 the output lines 20, 21 are assigned. These output lines 20, 21 go into a common line 22 which is not one shown mixer leads, in which the two material components be mixed together. Downstream of the mixer is then, for example, a paint spray gun.

Die Kolbenstange 12 beziehungsweise 13 der Dosierpumpe 5 ist unmittelbar mit der Kolbenstange 23 eines Luftmotors 24 verbunden. Dieser Luftmotor wird von Zwei Platten 25, 26 gebildet, zwischen denen ein Zylinder 27 eingespannt ist. Die Platten 25, 26 werden durch Spannstäbe 28 miteinander verbunden. Die Platten 21 bzw. 26 des Luftmotors sind über Abstandselemente 31 starr mit den Platten 6, 7 der Dosierpumpe 5 verbunden. Der Luftmotor steuert sich selbsttätig um, d. h. bei Erreichen der jeweiligen Endstellung des Kolbens 29 wird ein Zwei-Wege-Ventil 30 entsprechend umgeschaltet.The piston rod 12 or 13 of the metering pump 5 is directly connected to the piston rod 23 of an air motor 24. This air motor is formed by two plates 25, 26 between which a cylinder 27 is clamped. The Plates 25, 26 are connected to one another by tension rods 28. The plates 21 and 26 of the air motor are via spacer elements 31 rigid with the plates 6, 7 of the metering pump 5 connected. The air motor reverses itself, i. H. when the respective end position of the piston 29 is reached a two-way valve 30 switched accordingly.

Die Dosierpumpe arbeitet wie folgt. Wird der Kolben 11 aus der dargestellten Stellung nach links verschoben, so wird über die Ansaugleitung 3 und das Rückschlagventil 16 Material aus dem Behälter 1, 2 gefördert. Das in dem Pumpenzylinder 9 befindliche Material wird nach links über die Bohrung 14, das Rückschlagventil 16 in die Ausgangsleitung 20, 22 ausgeschoben, wobei das Rückschlagventil 15 einen Rückfluß des Materials in den Behälter 1 verhindert. Hat der Kolben 11 die linke Endstellung erreicht, so wird dieser durch den Luftmotor 24 in entgegengesetzter Richtung bewegt, wobei dann über die Ansaugleitungen 4 und das Rückschlagventil 15 Material aus dem Behälter 1, 2 angesaugt wird. Gleichzeitig wird das im Pumpenzylinder 9 befindliche Material über das Rückschlagventil 18 und die Leitungen 14 ausgedrückt, wobei nunmehr das Rückschlagventil 16 einen Rückfluß des Materials in den Behälter 1, 2 und das Rückschlagventil 17 einen Rückfluß in den Pumpenzylinder 9 verhindert. Die beiden Dosierpumpen 5 arbeiten synchron, so daß dem nicht dargestellten Mischer kontinuierlich die vorgesehenen Mengen an den Materialien 1, 2 zugeführt wird. The dosing pump works as follows. The piston 11 is off the position shown moved to the left, so via the suction line 3 and the check valve 16 material conveyed from the container 1, 2. That in the pump cylinder 9 located material is to the left via the bore 14, the Check valve 16 pushed into the outlet line 20, 22, the check valve 15 a return flow of the material prevented in the container 1. The piston 11 has the left one End position reached, this is achieved by the air motor 24 moved in the opposite direction, then via the suction lines 4 and the check valve 15 material from the Container 1, 2 is sucked. At the same time it will be in the pump cylinder 9 material located via the check valve 18 and the lines 14 expressed, now the check valve 16 a reflux of the material into the container 1, 2 and the check valve 17 a backflow into the pump cylinder 9 prevented. The two dosing pumps 5 work synchronous, so that the mixer, not shown, continuously the intended amounts of materials 1, 2 supplied becomes.

BezugszeichenaufstellungList of reference symbols

11
Behältercontainer
22nd
Behältercontainer
33rd
AnsaugleitungSuction pipe
44th
AnsaugleitungSuction pipe
55
DosierpumpeDosing pump
66
Platteplate
77
Platteplate
88th
SpannstäbeTension rods
99
PumpenzylinderPump cylinder
1010th
DichtungenSeals
1111
Kolbenpiston
1212th
KolbenstangePiston rod
1313
KolbenstangePiston rod
1414
AnschlußbohrungConnection hole
1515
Rückschlagventilcheck valve
1616
Rückschlagventilcheck valve
1717th
Rückschlagventilcheck valve
1818th
Rückschlagventilcheck valve
1919th
VentilkugelValve ball
2020th
AusgangsleitungOutput line
2121
AusgangsleitungOutput line
2222
Leitungmanagement
2323
KolbenstangePiston rod
2424th
LuftmotorAir motor
2525th
Plattenplates
2626
Plattenplates
2727
Zylindercylinder
2828
SpannstäbeTension rods
2929
AntriebskolbenDrive piston
3030th
Zwei-Wege-VentilTwo-way valve
3131
AbstandselementeSpacers
3232
Leitungmanagement

Claims (5)

Fördereinrichtung mit Dosierpumpen (5) für die Entnahme von Materialien aus Behältern (1, 2), insbesondere für 2-Komponenten-Anlagen, welche von einem Luftmotor (24) antreibbar ist, mit einem in einem Pumpenzylinder (9) angeordneten und mittels einer Kolbenstange (12, 13) hin und her beweglichen Kolben (11) und mit dem Pumpenzylinder (9) verbundenen Ansaug- und Ausgangsleitungen (3, 4; 20, 21), wobei an jedem Pumpenzylinderende je eine Ansaug- und Ausgangsleitung (3, 4; 20, 21) angeschlossen ist, in jede Ansaug- und Ausgangsleitung (3, 4; 20,21) je ein in gleicher Strömungsrichtung wirkendes Rückschlagventil (15, 16; 17, 18) eingeschaltet ist, die Ansaugleitungen (3, 4) und Ausgangsleitungen (20, 21) jeweils in Strömungsrichtung vor bzw. nach den Rückschlagventilen (15, 16; 17, 18) miteinander verbunden sind und der Luftmotor (5) mit seinem Antriebskolben (29) in axialer Verlängerung der Kolbenstange (12, 13) der Dosierpumpe (5) angeordnet ist,
dadurch gekennzeichnet, daß
mehrere Dosierpumpen (5) in axialer Ausrichtung hintereinander angeordnet sind, wobei deren Kolbenstangen (12, 13) entweder mit der Kolbenstange (23) des Luftmotors (24) und/oder mit der Kolbenstange (12, 13) benachbarter Dosierpumpen (5) verbunden sind, daß jede Dosierpumpe (5) aus zwei miteinander verbundenen Platten (6, 7) besteht, zwischen denen der den Kolben (11) aufnehmende Pumpenzylinder (9) eingespannt ist und daß die Anschlußbohrungen (14) für die Ansaug- und Ausgangsleitungen (3, 4; 20, 21) in den Platten (6, 7) ausgebildet sind.Conveying device with metering pumps (5) for removing materials from containers (1, 2), in particular for 2-component systems, which can be driven by an air motor (24), with a piston rod arranged in a pump cylinder (9) and by means of a piston rod (12, 13) reciprocating pistons (11) and suction and outlet lines (3, 4; 20, 21) connected to the pump cylinder (9), one suction and outlet line (3, 4; 20, 21) is connected, a check valve (15, 16; 17, 18) acting in the same direction of flow is switched on in each suction and outlet line (3, 4; 20, 21), the suction lines (3, 4) and outlet lines (20, 21) in the flow direction before or after the check valves (15, 16; 17, 18) are connected to each other and the air motor (5) with its drive piston (29) in an axial extension of the piston rod (12, 13) of the metering pump (5) is arranged
characterized in that
a plurality of metering pumps (5) are arranged one behind the other in axial alignment, their piston rods (12, 13) being connected either to the piston rod (23) of the air motor (24) and / or to the piston rod (12, 13) of adjacent metering pumps (5) that each metering pump (5) consists of two interconnected plates (6, 7) between which the pump cylinder (9) receiving the piston (11) is clamped and that the connection bores (14) for the suction and outlet lines (3, 4; 20, 21) are formed in the plates (6, 7). Fördereinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Rückschlagventile (15, 16; 17, 18) jeder Dosierpumpe (5) parallel zueinander derart angeordnet sind, daß jedes Rückschlagventil (15, 16; 17, 18) allein aufgrund der Schwerkraft selbsttätig schließbar ist.Conveying device according to claim 1, characterized in that the check valves (15, 16; 17, 18) of each metering pump (5) are arranged parallel to one another in such a way that each check valve (15, 16; 17, 18) due solely to gravity can be closed automatically. Fördereinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Rückschlagventile (15, 16; 17, 18) unmittelbar in den Anschlußbohrungen (14) der Platten (6, 7) eingesetzt sind.Conveying device according to claim 1 or 2, characterized in that that the check valves (15, 16; 17, 18) directly in the connection bores (14) of the plates (6, 7) are used. Fördereinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Platten (6, 7) über Spannstäbe (8) miteinander verbunden sind und die Pumpenzylinder (9) in den Platten abgedichtet sind.Conveying device according to one of claims 1 to 3, characterized characterized in that the plates (6, 7) over tie rods (8) are connected together and the pump cylinder (9) are sealed in the plates. Fördereinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zwischen zwei Dosierpumpen (5) ein Luftmotor (24) angeordnet ist.Conveying device according to one of claims 1 to 4, characterized characterized in that between two metering pumps (5) an air motor (24) is arranged.
EP98103870A 1997-04-07 1998-03-05 Feeding device with dosing pumps Withdrawn EP0870924A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29706074U 1997-04-07
DE29706074U DE29706074U1 (en) 1997-04-07 1997-04-07 Dosing pump

Publications (2)

Publication Number Publication Date
EP0870924A2 true EP0870924A2 (en) 1998-10-14
EP0870924A3 EP0870924A3 (en) 1999-12-08

Family

ID=8038501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98103870A Withdrawn EP0870924A3 (en) 1997-04-07 1998-03-05 Feeding device with dosing pumps

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EP (1) EP0870924A3 (en)
JP (1) JPH10281057A (en)
KR (1) KR19980081078A (en)
DE (1) DE29706074U1 (en)

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EP0870924A3 (en) 1999-12-08
DE29706074U1 (en) 1997-07-31
JPH10281057A (en) 1998-10-20
KR19980081078A (en) 1998-11-25

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