WO1994020228A1 - Kontrollsieb sowie verfahren zur kontrollsiebung - Google Patents
Kontrollsieb sowie verfahren zur kontrollsiebung Download PDFInfo
- Publication number
- WO1994020228A1 WO1994020228A1 PCT/CH1994/000053 CH9400053W WO9420228A1 WO 1994020228 A1 WO1994020228 A1 WO 1994020228A1 CH 9400053 W CH9400053 W CH 9400053W WO 9420228 A1 WO9420228 A1 WO 9420228A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screen
- sieve
- outlet
- centrifugal
- jacket
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000003908 quality control method Methods 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 238000012216 screening Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 8
- 206010012735 Diarrhoea Diseases 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000011362 coarse particle Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 235000013312 flour Nutrition 0.000 description 7
- 238000007873 sieving Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/20—Stationary drums with moving interior agitators
Definitions
- the invention relates to a control screen, in particular with a pneumatic material feed, a screen housing, a cylindrical screen jacket with a centrifugal rotor rotating therein, an outlet for the screen rejection and an outlet for the screen diarrhea.
- the control sieve can be installed within a pneumatic transport, for example, which is already present, but it is required that a corresponding sieve device does not create a large resistance, which would increase the power required for the pneumatic transport.
- a separate type of the so-called "screening machines in the delivery of compressed air” has developed here.
- This old publication proposed that a beater mechanism with a high rotational speed be arranged within a cylindrical sieve jacket and that the flour freed from the shells be conveyed further via an annular cylindrical channel with the air flow.
- the accent of this facility lies in its function as a bran spinner, which is a typical aggregate in mill processing technology.
- the device mentioned was further developed with regard to the actual function of the control sieving of large quantities of flour, which for example have to be reloaded into silos by a transport vehicle. It is proposed to arrange the sieve device at the end of a pneumatic delivery line. Instead of the traditional beater mechanism for bran centrifuges, a rotor with longitudinal blades is selected and the material to be screened is guided against the screen jacket by a disc.
- the object of the invention was now to avoid the disadvantages of the known solutions, in particular to achieve a high throughput with the greatest possible security for the control screening.
- pneumatic transport there should only be a slight loss of pressure.
- the solution according to the invention is characterized in that the centrifugal rotor has a plurality of centrifugal strips, which extend essentially over the entire length of the screen jacket, with radially projecting conveying or cleaning tabs, which are preferably formed from rubber-elastic material, and work in the vicinity of the screen jacket or lightly touch the inner surface of the sieve.
- the invention allows a whole number of particularly advantageous configurations.
- a sieve opening is deliberately chosen through which all flour can pass. Exactly through the relatively large sieve openings, however, tired bristles (D ⁇ 0.3 mm) can penetrate and get from the brush cleaning element undesirable e.g. in the food.
- An optimal sieving effect was obtained if the centrifugal strips had several, radially protruding rubber-elastic conveying or cleaning rags. With the elastic conveying or cleaning tabs, corresponding bristle parts no longer arise.
- the cleaning tabs be arranged on the same centrifugal bar with a longitudinal spacing from one another, preferably with a staggered arrangement to the next centrifugal bar to form a screw-shaped conveying component over the length of the screen jacket.
- the resulting swirl-like movement of the material supports the sieving, and at the same time ensures that the coarse material is conveyed quickly and foreign bodies are discharged to the outlet.
- the elastic cleaning rags touch the inner surface of the sieve (work surface) for flour or semolina-like products, for example, and keep it clean.
- the entry distributor is designed as a driven entry centrifugal screw and can be a single-entry but preferably a two- or multiple-entry entry screw. If the entry distributor actually acts like a spreading disc, the worm housing can be constructed so as to be rotatable, with inlet connections opening radially or tangentially to the axis of rotation of the centrifugal rotor for the pneumatic material feed.
- connection With a large number of dispositions with regard to the position and direction of the pneumatic conveying line, this allows the connection to any point on the circumference to be made simple with the smallest possible number of pipe bends.
- connection With purely mechanical feed, the connection can be freely selected at least within an upper angle of 90 °. Due to the mechanically compelling uniform distribution effect by the feed distributor, the special direction of the material feed no longer has any influence on the product loading on the sieve. It has been shown that the rotor can be driven at low speed, preferably at less than 500 rpm. As a result, the service life of the control screen device, in particular the service life of the screen jacket and the cleaning cloth, can be increased.
- a further displacement body can be arranged between the distribution section and the outlet for the screen repulsion, the outlet being in the form of an annular gap for the sieve repulsion is preferably formed by a rubber-elastic disc.
- the centrifugal rotor it is also possible for the centrifugal rotor to have a stepped or conically widening displacement body or at least 2 corresponding baffle plates between the distribution section and the outlet.
- the invention further relates to a method for the control sieving of flour-like goods, in particular with a pneumatic transport with a cylindrical sieve jacket, a centrifugal rotor rotating therein and a sieve housing, wherein coarse parts are separated as sieve repulsion through an outlet and is characterized in that the centrifugal rotor extends over its length have preferably rubber-elastic, radially projecting cleaning lobes yielding the screen jacket, with a helical conveying effect, and the outlet for the screen repulsion is formed by an elastically yielding disk, in such a way that even larger foreign bodies are discharged with the coarse parts without damage.
- FIG. 1 shows a cross-section of a control sieve
- FIG. 2 shows schematically the arrangement of cleaning rags with 4 centrifugal strips shown directly one behind the other
- Figure 3 is a view I of Figure 2
- 4 shows a section IV-IV of Figure 2 on a larger scale
- FIG. 5 shows schematically a pneumatic pressure conveyor system with control screening
- a pneumatic material feed 1 is connected via an elbow piece 2 to a nozzle 3 of a rotatable screw housing 4 of an entry screw 5.
- the feed screw 5 is fixedly connected to a shaft 6 of a centrifugal rotor 7 which can be driven via a pulley 8.
- the housing 4 can be rotated about the axis 9 of the centrifugal rotor 7 and can be arranged in any rotational position, for example screwed onto a mesh housing 16 via clamping rings 10.
- the centrifugal rotor 7 is surrounded over the entire length by a screen jacket 11, so that the cleaned material can only pass through the meshes of the screen jacket 11.
- Coarser parts that have to be sieved are removed at the opposite end through an outlet 12.
- the outlet 12 is delimited by the screen jacket 11 and by a rubber-elastic plate 13, which has a somewhat smaller diameter than the screen jacket 11 and forms a gap 14.
- a coarse material box 15 can preferably be pivoted away about a vertical axis, for checking the screen jacket or for service work.
- the machine housing 16 as well as a collecting container 17 and feed 18 and end flap 19 are designed to be pressure-resistant as required.
- the lower part of the machine housing is designed as a collecting funnel 20, on which a conveying pipe 21 is arranged for the pneumatic further transport of the sieved material.
- the centrifugal rotor 7 has four centrifugal strips 22 which extend essentially over the entire length L of the screen jacket 11, these being arranged offset by 90 ° each.
- the centrifugal strips have the primary function of keeping the goods in a strong orbital motion, thus by means of the corresponding centrifugal force the material is always driven to the screen jacket 11.
- Two baffle plates are further arranged 24 and 25 to the Sc hl eu d errotor 7, which are intended to prevent direct longitudinal movement of the goods.
- the two baffle plates 24 and 25 simultaneously divide the inner screen space into three parts, a first section A preferably being less than 1/3 of the length and the remaining section B correspondingly being more than 2/3 of the length.
- Section A simultaneously forms the distribution section in which the material is distributed uniformly over the entire circumference of the screen jacket 11 by the rotating movement of the feed screw 5.
- An additional distributing effect is achieved in that the flinger bars 22 also extend over this section by a measure As ".
- the flinger bars 22 are rigidly connected to the shaft 6 by means of an arm cross 26 Number of conveyor or cleaning tabs 23 attached, which protrude radially, are more or less rubber-elastic and lightly touch the screen jacket 11 for all non-abrasive goods.
- the cleaning rags 23 are shown on a larger scale in FIGS. 2, 3 and 4.
- the conveyor or wiping cleaning tabs 23 are, as can be seen from FIG. 4, attached to the centrifugal bars 22 by a clamping bar 27 and can bend backwards when a large foreign body enters (23 '), so that the latter is not jammed, such as this can happen with rigid strips.
- the four flinger 22 are shown schematically lined up.
- the conveying or cleaning lobes are offset by a dimension X, the dimension X also corresponding approximately to the length of an individual cleaning lobe 23 in the example.
- the individual cleaning cloth is preferably given a trapezoidal shape, so that a sawtooth shape is formed over the entire length of an individual flinger 22 arises ( Figure 2).
- the offset arrangement produces a conveying effect as indicated by the arrows 28 (FIG. 3). This creates a swirl effect in the interior of the screen jacket especially for the coarse material, towards the outlet, at the end of the screen jacket. It is particularly important that the centrifugal strips 22 and the cleaning tabs 23 are also fully effective in the distribution section A. In this area, therefore, due to the unequal length of the cleaning tabs 23a, 23b, 23c and 23d, without displacement, only a minimal conveying effect, but intensive distribution and sieve support is desired.
- FIG. 5 shows an example of a pneumatic pressure delivery system with a built-in control screen 30.
- a fan 31 supplies the required compressed air, which can be adjusted in pressure via a pressure control valve 37.
- the material is fed into the pressure delivery line 1 via a rotary lock 32. Dash-dotted lines indicate that the delivery line can also be laid according to the line 1 ', which can be done by turning the screw housing 4 according to arrow 33.
- the pneumatic tube 21 for the screened material is conveyed with the same conveying air into a trimelle 34 or, for example, into a container from which the air is discharged via a filter 35 and a fan 36, and the material can be fed for further processing.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Centrifugal Separators (AREA)
- Threshing Machine Elements (AREA)
- Vehicle Body Suspensions (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Formation And Processing Of Food Products (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94908243A EP0641264B1 (de) | 1993-03-12 | 1994-03-11 | Kontrollsieb sowie verfahren zur kontrollsiebung |
DE59404615T DE59404615D1 (de) | 1993-03-12 | 1994-03-11 | Kontrollsieb sowie verfahren zur kontrollsiebung |
US08/335,732 US5593042A (en) | 1993-03-12 | 1994-03-11 | Quality-control sieve and method of using it |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4307789A DE4307789C3 (de) | 1993-03-12 | 1993-03-12 | Kontroll-Siebvorrichtung sowie Verwendung der Vorrichtung |
DEP4307789.7 | 1993-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994020228A1 true WO1994020228A1 (de) | 1994-09-15 |
Family
ID=6482564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1994/000053 WO1994020228A1 (de) | 1993-03-12 | 1994-03-11 | Kontrollsieb sowie verfahren zur kontrollsiebung |
Country Status (8)
Country | Link |
---|---|
US (1) | US5593042A (de) |
EP (1) | EP0641264B1 (de) |
CN (1) | CN1053847C (de) |
AT (1) | ATE160301T1 (de) |
DE (2) | DE4307789C3 (de) |
ES (1) | ES2109679T3 (de) |
GB (1) | GB2276339B (de) |
WO (1) | WO1994020228A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19628437C2 (de) * | 1996-07-15 | 1999-05-12 | Wiegand Thomas | Einrichtung und Verfahren zur Klassierung und knautschenden Verringerung von Partikelgrößen eines Granulatgemisches |
DE19634291C2 (de) * | 1996-08-24 | 2002-03-14 | Azo Gmbh & Co | Vorrichtung zum Sieben |
DE60121038T2 (de) * | 2000-11-08 | 2006-12-21 | Tsukasa Industry Co., Ltd., Handa | Inline sichtvorrichtung |
DE10135398A1 (de) * | 2001-07-25 | 2003-02-20 | Recover System Recycling Gmbh | Verfahren und Vorrichtung zum Klassieren von Wertstoff mit mindestens einer Faserfraktion |
US20070108107A1 (en) * | 2005-11-15 | 2007-05-17 | Morrow Deborah E | Disposable pre-tensioned sieve frame and method of making same |
RU2447952C2 (ru) * | 2006-05-10 | 2012-04-20 | Цуказа Ко., Лтд. | Просеиватель |
US8240481B2 (en) * | 2006-05-10 | 2012-08-14 | Tsukasa Co., Ltd. | Sifter |
US8118173B2 (en) * | 2008-12-03 | 2012-02-21 | Westlake Longview Corp. | Streamer trap assembly |
JP5895713B2 (ja) * | 2012-06-01 | 2016-03-30 | 株式会社サタケ | 異物選別機 |
US11180391B2 (en) | 2013-10-02 | 2021-11-23 | Anaergia B.V. | Method and device for processing solid waste |
NL1040425C2 (nl) * | 2013-10-02 | 2015-04-07 | Technologies Holding B V D | Werkwijze en inrichting voor het scheiden van lichtere deeltjes en zwaardere deeltjes. |
US9440262B2 (en) * | 2014-11-07 | 2016-09-13 | Rec Silicon Inc | Apparatus and method for silicon powder management |
CN107635635A (zh) * | 2015-02-23 | 2018-01-26 | 弗洛伊德库珀股份有限公司 | 多区桨叶筛选设备 |
CN108472696A (zh) | 2015-11-02 | 2018-08-31 | 安那吉亚有限责任公司 | 用于处理固体废物的方法和装置 |
US10287171B2 (en) | 2016-05-05 | 2019-05-14 | Rec Silicon Inc | Tumbling device for the separation of granular polysilicon and polysilicon powder |
US9682404B1 (en) * | 2016-05-05 | 2017-06-20 | Rec Silicon Inc | Method and apparatus for separating fine particulate material from a mixture of coarse particulate material and fine particulate material |
US10993375B2 (en) * | 2018-06-19 | 2021-05-04 | Ecomill, Llc | Centrifugal scattering device |
US10639645B2 (en) * | 2018-06-19 | 2020-05-05 | Ecomill, Llc | Method for separating fine fractures and coarse fractures using a vacuum |
CN111589707A (zh) * | 2020-05-18 | 2020-08-28 | 赖新亮 | 一种豆类加工滚筒式无尘除石的方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190918054A (en) * | 1909-08-05 | 1910-07-07 | Ebenezer Hill | Improved Means or Apparatus for Grading, Cleaning and Polishing Peas, Beans, Maize, Seeds and the like. |
FR658529A (fr) * | 1928-08-03 | 1929-06-05 | Perfectionnements aux tamis | |
DE867193C (de) * | 1951-05-12 | 1953-02-16 | Muehlenbau Ges Friedrich Liebe | Verfahren zum Trennen von Mehl und Kleie oder Mehl und Schrot |
DE1255461B (de) * | 1965-06-05 | 1967-11-30 | Adolf Zimmermann Maschb | Siebtrommel mit rotierendem Schlaegerwerk |
DE2121726A1 (de) * | 1971-05-03 | 1972-11-23 | Dietrich Reimelt Kg, 6074 Urberach | Siebvorrichtung |
DE2338909A1 (de) * | 1973-08-01 | 1975-04-17 | Zimmermann Azo Maschf | Siebmaschine |
DE3019113A1 (de) * | 1979-05-25 | 1980-11-27 | Guth Karl V L | Zentrifugalmaschine fuer getreidemahlgut |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1443773A (en) * | 1919-11-12 | 1923-01-30 | Howard L Wadsworth | Sand-cutting machine |
GB462705A (en) * | 1935-02-04 | 1937-03-15 | Hobart Mfg Co | Improvements in or relating to sifting devices for sifting finely divided material such as flour |
US2389715A (en) * | 1944-10-18 | 1945-11-27 | Orrin C Beardsley | Apparatus for removing dust from feathers |
CH263874A (de) * | 1948-05-25 | 1949-09-30 | Buehler Ag Geb | Maschine für das Reinigen von Getreidekörnern, Kleie und dergleichen. |
US2738065A (en) * | 1951-01-04 | 1956-03-13 | Mahlkuch Eva | Method of and apparatus for processing materials |
DE961852C (de) * | 1951-08-25 | 1957-04-11 | Miag Vertriebs Gmbh | Vorrichtung zum Trennen von Mehl und Kleie |
GB720571A (en) * | 1951-11-26 | 1954-12-22 | Eva Mahlkuch | Improvements in sifting apparatus for bran |
DE896284C (de) * | 1952-04-16 | 1953-11-09 | Mahlkuch Greif Werk Ernst | Maschine zum Schlagen und Schleudern von Kleie |
DE968988C (de) * | 1953-03-19 | 1958-04-17 | Miag Vertriebs Gmbh | Vorrichtung zum Trennen von Mehl und Kleie |
GB1187268A (en) * | 1967-09-27 | 1970-04-08 | John Chapman & Company Ltd | Improvements in Filtering Apparatus |
DE2227037C2 (de) * | 1972-06-02 | 1974-01-31 | Truetzschler & Co, 4070 Rheydtodenkirchen | Vorrichtung zum Ausscheiden von Pitzen |
US4202759A (en) * | 1978-11-24 | 1980-05-13 | Prater Industries, Inc. | Centrifugal screening apparatus |
DE2912870A1 (de) * | 1979-03-30 | 1980-10-09 | Reimelt Dietrich Kg | Siebmaschine mit feststehender siebtrommel und darin umlaufenden schlaegerwerk |
US4582202A (en) * | 1982-09-30 | 1986-04-15 | Kason Corporation | Centrifugal sorting method |
DE3503043A1 (de) * | 1985-01-30 | 1986-07-31 | Azo-Maschinenfabrik Adolf Zimmermann Gmbh, 6960 Osterburken | Siebmaschine mit zylindersieb |
US4880539A (en) * | 1987-10-16 | 1989-11-14 | Cellier Corporation | Filter for filtering solids out of a liquid having a doctor blade wiping means |
DE9209985U1 (de) * | 1992-07-24 | 1992-09-17 | Hahn Verfahrenstechnik GmbH, 6053 Obertshausen | Siebvorrichtung für pulverförmige und granuläre Schüttgüter |
-
1993
- 1993-03-12 DE DE4307789A patent/DE4307789C3/de not_active Expired - Fee Related
-
1994
- 1994-03-11 ES ES94908243T patent/ES2109679T3/es not_active Expired - Lifetime
- 1994-03-11 AT AT94908243T patent/ATE160301T1/de not_active IP Right Cessation
- 1994-03-11 US US08/335,732 patent/US5593042A/en not_active Expired - Fee Related
- 1994-03-11 DE DE59404615T patent/DE59404615D1/de not_active Expired - Fee Related
- 1994-03-11 GB GB9404781A patent/GB2276339B/en not_active Expired - Fee Related
- 1994-03-11 EP EP94908243A patent/EP0641264B1/de not_active Expired - Lifetime
- 1994-03-11 WO PCT/CH1994/000053 patent/WO1994020228A1/de active IP Right Grant
- 1994-03-11 CN CN94190123A patent/CN1053847C/zh not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190918054A (en) * | 1909-08-05 | 1910-07-07 | Ebenezer Hill | Improved Means or Apparatus for Grading, Cleaning and Polishing Peas, Beans, Maize, Seeds and the like. |
FR658529A (fr) * | 1928-08-03 | 1929-06-05 | Perfectionnements aux tamis | |
DE867193C (de) * | 1951-05-12 | 1953-02-16 | Muehlenbau Ges Friedrich Liebe | Verfahren zum Trennen von Mehl und Kleie oder Mehl und Schrot |
DE1255461B (de) * | 1965-06-05 | 1967-11-30 | Adolf Zimmermann Maschb | Siebtrommel mit rotierendem Schlaegerwerk |
DE2121726A1 (de) * | 1971-05-03 | 1972-11-23 | Dietrich Reimelt Kg, 6074 Urberach | Siebvorrichtung |
DE2338909A1 (de) * | 1973-08-01 | 1975-04-17 | Zimmermann Azo Maschf | Siebmaschine |
DE3019113A1 (de) * | 1979-05-25 | 1980-11-27 | Guth Karl V L | Zentrifugalmaschine fuer getreidemahlgut |
Also Published As
Publication number | Publication date |
---|---|
DE4307789C2 (de) | 1996-04-04 |
ES2109679T3 (es) | 1998-01-16 |
DE4307789C3 (de) | 2000-02-24 |
CN1053847C (zh) | 2000-06-28 |
GB2276339B (en) | 1997-05-21 |
ATE160301T1 (de) | 1997-12-15 |
EP0641264B1 (de) | 1997-11-19 |
DE59404615D1 (de) | 1998-01-02 |
EP0641264A1 (de) | 1995-03-08 |
US5593042A (en) | 1997-01-14 |
GB9404781D0 (en) | 1994-04-27 |
GB2276339A (en) | 1994-09-28 |
DE4307789A1 (de) | 1994-10-27 |
CN1105502A (zh) | 1995-07-19 |
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