EP0955101B1 - Dispositif de tamisage - Google Patents

Dispositif de tamisage Download PDF

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Publication number
EP0955101B1
EP0955101B1 EP99108452A EP99108452A EP0955101B1 EP 0955101 B1 EP0955101 B1 EP 0955101B1 EP 99108452 A EP99108452 A EP 99108452A EP 99108452 A EP99108452 A EP 99108452A EP 0955101 B1 EP0955101 B1 EP 0955101B1
Authority
EP
European Patent Office
Prior art keywords
screen
screening device
auxiliary
prescreen
beater mechanism
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.)
Expired - Lifetime
Application number
EP99108452A
Other languages
German (de)
English (en)
Other versions
EP0955101A2 (fr
EP0955101A3 (fr
Inventor
Wolfhard Rumpf
Heinrich Nordmann
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.)
Reimelt Dietrich KG
Original Assignee
Reimelt Dietrich 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 Reimelt Dietrich KG filed Critical Reimelt Dietrich KG
Publication of EP0955101A2 publication Critical patent/EP0955101A2/fr
Publication of EP0955101A3 publication Critical patent/EP0955101A3/fr
Application granted granted Critical
Publication of EP0955101B1 publication Critical patent/EP0955101B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B07B1/22—Revolving drums
    • B07B1/24—Revolving drums with fixed or moving interior agitators
    • 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 screening device with a Main screen and a pre-screen movable relative to it, that with one interacting with the main sieve Main racket plant is connected.
  • a screening device of the type mentioned is out US 4 202 759 known.
  • a pre-screen is used.
  • the main racket mill is located on this pre-screen attached so that when the Pre-sieve not only a movement of the bulk material relative is generated for the pre-screen, but also a promotion relative to the bulk material that has passed through the pre-screen to the main sieve. Rough parts that are in the The pre-screen basket may have to be left by hand be removed from the pre-screen basket.
  • screening is with this Screening device, however, problematic, for example then when the bulk material tends to lump or become interlocked. In this case it can be observed that the pre-screen clogs relatively quickly and the Operation of the screening device interrupted for cleaning must become.
  • the invention has for its object a screening device specify which also with problematic screenings works satisfactorily.
  • This task is the beginning of a screening device mentioned type in that an auxiliary racket interacts with the moving pre-screen and a Drive for generating a relative movement between Auxiliary racket and pre-screen is provided.
  • the auxiliary club movement moves relative to that moving pre-screen or the pre-screen opposite the auxiliary racket.
  • the auxiliary racket can over work the entire length on the pre-screen. So that's it possible the main racket movement along the entire length supported on the pre-screen, which enables increased stability, and still product approaches across the entire Avoid length of the pre-screen. Large, sensitive too Products are carefully removed from the pre-screen.
  • the auxiliary beater mechanism is preferably used as a discharge device trained
  • the auxiliary club movement thus promotes the product, i.e. the good to be screened, not just simple over the area of the pre-screen, but also in a certain direction, namely towards the coarse material outlet, see above that the throughput can be increased further.
  • both the main screen and the pre-screen as cylinder screens are trained and the pre-screen and the auxiliary racket at different speeds rotate.
  • a relative movement can be made realize the material to be sieved simply by that either the cylinder or the corresponding one Racket is rotated.
  • Main screen will be kept stationary, and the main racket plant stripes, possibly with a small one Distance along the inner wall of the main sieve.
  • a relative movement between the auxiliary racket mechanism and gives the pre-screen it is just required these two parts with different To let speeds rotate.
  • Such different Speeds can be relative easy to adjust.
  • the auxiliary racket mechanism is preferably in a drive shaft of the pre-screen rotatably mounted. So that solves the problem of support in a relatively simple way of the auxiliary racket factory.
  • the drive shaft for that Pre-sieve must be brought up to the pre-sieve anyway so that torque transmission is possible.
  • the drive shaft but has a sufficient diameter, so that there is enough space for storing the auxiliary racket is available.
  • an auxiliary shaft as the drive of the auxiliary racket mechanism by the drive shaft is led. You can then use both the pre-sieve the main racket and the auxiliary racket drive from the same side. This has the advantage that the other side, which is drive-free, for example is easily accessible for maintenance purposes.
  • the drive shaft and the auxiliary shaft side-by-side drive wheels with are connected to the same drive motor.
  • the auxiliary shaft extends completely through the drive shaft, so that it faces away from the pre-screen Page is accessible.
  • the Connection between the drive wheels and the drive motor can be done in many ways. For example you can use V-belts, timing belts, chains or use gears. You can use the auxiliary racket if necessary, also shutdown, i.e. at speed Drive zero. When moving the pre-screen there is nevertheless a relative movement between Prescreen and auxiliary racket.
  • the drive wheels advantageously have different ones Effective diameter.
  • the different Speeds of pre-screen and auxiliary racket then adjusted via the difference in diameter. This has the advantage that the output shaft of the drive motor practically does not have to be modified. There can one can use the same driven wheels.
  • the auxiliary racket is an advantage as a screw conveyor educated. It does not only move the material to be conveyed in the circumferential direction over the inside of the pre-screen, but also in the axial direction. This ensures that the parts of the screened material that are not through the pre-screen can step out of the coarse material outlet can be.
  • the screw conveyor advantageously has a smaller one Conveying capacity as a feed screw from an inlet to the entrance of the pre-screen. You wear it with Fact that a certain proportion of the screenings to pass through the pre-screen. This leaves realize themselves in a simple way that the Conveyor screw is lower despite a higher speed Has delivery capacity, for example if the screen basket itself rotates at high speed, with which the screw conveyor also rotates Speed difference between pre-screen and auxiliary racket but is kept much smaller. Can too the pitch of the snail may be less.
  • the screw conveyor has a single helix while the feed screw is a double or multiple helix having.
  • the auxiliary racket is advantageously of one Air duct interspersed lengthways, based on a screenings room, inside a warehouse in a washing room empties.
  • Air duct can run continuously or in sections Air conveyed with a certain pressure which are then in front of the sealing rings with which the bearings A barrier air barrier should be protected from the product builds.
  • Product approach is avoided. Any product approach that has already been formed will be restored removed so that the seals and bearings a have a relatively long lifespan.
  • Air transport in the axial interior is done by the auxiliary racket mechanism through, so that a complicated wiring in moving parts can be avoided.
  • the prescreen is preferably divided in the longitudinal direction. You combine the advantages of a shared one Prescreen, as for example from DE 43 31 782 C1 is known with the advantages of a moving pre-screen with a relative movement between the auxiliary racket movement and pre-screen.
  • a part of the pre-screen preferably surrounds the feed screw and this part is arranged stationary.
  • This Part of the pre-screen can therefore be rotated in the housing be stored. It is penetrated by the feed screw. Accordingly, the feed screw can sieve promote well over this part of the pre-screen, which is mainly means a longitudinal movement. Furthermore is also a small rotary part of the movement contain. This movement then follows the pre-screening in the second part, which by the relative Auxiliary beater mechanism moved to the pre-screen supports becomes.
  • a screening device 1 has a stationary main screen 2, which is designed as a cylinder screen.
  • the main sieve 2 is with aids not shown both in the axial direction and in the radial direction curious; excited. Screening material that passes through the main screen 2, falls into a fine material outlet 3, from where it can be removed.
  • the material to be screened is shown in dashed lines Inlet housing 4 supplied.
  • In the inlet housing 4 is a feed screw 5 is arranged, the double helix 6 has.
  • the double helix 6 is on a shaft 7 arranged, the rotatable in a also only dashed illustrated bearing 8 is stored. It towers through the housing 4 and protrudes with a stub shaft 9 the housing 4 out.
  • On the stub 9 is a Drive wheel 10 arranged non-rotatably, the one V-belt 11 is connected to an output gear 12, which is arranged on a drive shaft 13 of a motor 14 is.
  • the feed screw 5 rotates and conveys screenings from the inlet housing 4 through a feed channel 15 up to a rotatably connected to the feed screw 5 Pre-screen 16.
  • the pre-screen 16 also rotates.
  • the pre-screen 16 is also designed as a cylinder screen.
  • a main racket 17 attached, such as from FIGS. 2 and 3 can be seen, several distributed in the circumferential direction Has flap bars on the inside of the Strip the main sieve 2 and the material to be sieved relatively move to main sieve 2.
  • the pre-screen is stored not shown in the housing 4.
  • the screw conveyor 18 Inside the pre-screen 16 is a screw conveyor 18 arranged.
  • the screw conveyor 18 has a single helix 19 on.
  • the screw conveyor 18 is opposite the pre-screen 16 rotatably mounted.
  • the screw conveyor 18 has an end 20 on which the pre-screen 16 by a star-shaped Bracket 21 and bearing 22 is supported. this is that right end in FIG. 1.
  • the screw conveyor an auxiliary shaft 23.
  • the auxiliary shaft 23 is passed through the shaft 7 of the feed screw 5 and rotatably supported there. It sticks out with a wave stub 24 from the shaft 7, more precisely, from the Wave stub 9, out.
  • On the stub 24 is a drive wheel 25 attached in a rotationally fixed manner.
  • the drive wheel 25 has a slightly smaller diameter than the drive wheel 10.
  • the drive wheel 25 is via a V-belt 26 connected to an output gear 27, which also attached to the drive shaft 13 of the motor 14 is.
  • the auxiliary shaft 23 is in one another camp 34 stored.
  • the motor If the motor is now turned, then it does not drive only the feed screw 5 and thus the pre-screen 16, but it also drives the screw conveyor 18. by virtue of the different effective diameters of the Drive wheels 10, 25 result in different Speeds of pre-screen 16 and screw conveyor 18, so that thus automatically a relative movement between the Screw conveyor 18 and the inner wall of the pre-screen 16 generated becomes.
  • the screw conveyor 18 thus promotes the the pre-screened material over the inner surface the pre-screen 16 and thus acts as an auxiliary racket mechanism, so that even screenings that clump or clog tends to be high in reliability and less Susceptibility to failure can be screened.
  • the direction of the slope the screw conveyor 18 depends on the Direction of the speed difference between pre-screen 16 and Screw conveyor 18.
  • the screw conveyor 18 is of an air duct 30 Interspersed lengthways.
  • the air duct 30 is at the end 20 of the screw conveyor 18 with an air connection 31 in Connection.
  • the air duct 30 opens into a rinsing chamber 32, each arranged axially within bearings 22, 33 are.
  • Axial within refers to a room in which the screenings are conveyed, for example the axial extension of the pre-screen 16.
  • the bearings 22, 33 have thereby a longer lifespan.
  • Are axially inward the blow chambers 32 are limited by air purge bushings 35. There can be a barrier air barrier with the help of the blown air built up or blown off product become.
  • Fig. 6 shows an embodiment that compared to those 1 is slightly modified. Since the Most parts will correspond to one repeat the description of these parts.
  • the pre-screen 16 which is in the design after Fig. 1 extends over the entire length of the main screen 2 has now been divided. It has a part 16a on the moving pre-screen 16 of FIG. 1 essentially corresponds, i.e. in this part 16a rotates the screw conveyor 18, which in turn has a different speed has as the feed screw 5. This part 16a the pre-screen is connected to the feed screw via a connection 40 5 connected.
  • the pre-screen has a second part 16b, which in the Housing 4 is set. This part 16b is from the Feed screw 5 protrudes. The feed screw 5 generates So a relative movement compared to this stationary Part 16b of the pre-screen.
  • the screenings are first over part 16b of the Pre-screen conveyed, with the help of the feed screw 5. Then the screenings come into the other part 16a of the pre-screen and is there with the help the screw conveyor 18, which is a relative movement to the Part 16a of the pre-screen is driven by the pre-screen.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Claims (12)

  1. Dispositif de tamisage comprenant un tamis principal et un tamis préalable qui est déplaçable par rapport au tamis principal et qui est relié à un outil de brassage coopérant avec le tamis principal, caractérisé en ce qu'un outil de brassage auxiliaire (18) coopère avec le tamis préalable déplacé (16) et en ce qu'un entraínement est prévu pour produire un mouvement relatif entre l'outil de brassage auxiliaire (18) et le tamis préalable (16).
  2. Dispositif de tamisage suivant la revendication 1, caractérisé en ce que l'outil de brassage auxiliaire (18) est réalisé sous la forme d'un dispositif de déchargement.
  3. Dispositif de tamisage suivant l'une des revendications 1 et 2, caractérisé en ce que aussi bien le tamis principal (2) que le tamis préalable (16) sont réalisés sous la forme de tamis cylindriques et en ce que le tamis préalable (16) et l'outil de brassage auxiliaire (18) tournent à des vitesses différentes.
  4. Dispositif de tamisage suivant la revendication 3, caractérisé en ce que l'outil de brassage auxiliaire (18) est supporté de manière à pouvoir tourner dans un arbre d'entraínement (7) du tamis préalable (16).
  5. Dispositif de tamisage suivant la revendication 4, caractérisé en ce qu'un arbre auxiliaire (23) est guidé à travers l'arbre d'entraínement (7), comme entraínement de l'outil de brassage auxiliaire (18).
  6. Dispositif de tamisage suivant la revendication 5, caractérisé en ce que l'arbre d'entraínement (7) et l'arbre auxiliaire (23) présentent des roues d'entraínement (10, 25) qui sont agencées l'une à côté de l'autre et qui sont reliées au même moteur d'entraínement (14).
  7. Dispositif de tamisage suivant la revendication 6, caractérisé en ce que les roues d'entraínement (10, 25) présentent des diamètres actifs différents.
  8. Dispositif de tamisage suivant l'une des revendications 1 à 7, caractérisé en ce que l'outil de brassage auxiliaire (18) est réalisé sous la forme d'une vis transporteuse.
  9. Dispositif de tamisage suivant la revendication 8, caractérisé en ce que la vis transporteuse (18) présente un débit plus faible qu'une vis d'amenée (5) allant d'une admission (4) à l'entrée du tamis préalable (16).
  10. Dispositif de tamisage suivant l'une des revendications 1 à 9, caractérisé en ce que l'outil de brassage auxiliaire (18) est traversé dans le sens da la longueur par un canal d'aération (30) qui, par rapport à un volume de matière de tamisage, débouche à l'intérieur de paliers dans un espace de balayage (32).
  11. Dispositif de tamisage suivant l'une des revendications 1 à 10, caractérisé en ce que le tamis préalable (16a, 16b) est divisé dans la direction longitudinale.
  12. Dispositif de tamisage suivant la revendication 11, caractérisé en ce qu'une partie (16b) du tamis préalable entoure la vis d'amenée (5) et en ce que cette partie (16b) est agencée de manière stationnaire.
EP99108452A 1998-05-04 1999-04-30 Dispositif de tamisage Expired - Lifetime EP0955101B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19819866 1998-05-04
DE19819866A DE19819866C1 (de) 1998-05-04 1998-05-04 Siebeinrichtung

Publications (3)

Publication Number Publication Date
EP0955101A2 EP0955101A2 (fr) 1999-11-10
EP0955101A3 EP0955101A3 (fr) 2000-08-02
EP0955101B1 true EP0955101B1 (fr) 2003-11-26

Family

ID=7866626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99108452A Expired - Lifetime EP0955101B1 (fr) 1998-05-04 1999-04-30 Dispositif de tamisage

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EP (1) EP0955101B1 (fr)
DE (2) DE19819866C1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5895713B2 (ja) * 2012-06-01 2016-03-30 株式会社サタケ 異物選別機
CN102688795A (zh) * 2012-06-05 2012-09-26 张永胜 高效湿法整粒机
GB2503233A (en) * 2012-06-19 2013-12-25 Kek Gardner Ltd Centrifugal sifting apparatus
CN102764729A (zh) * 2012-07-16 2012-11-07 江阴市龙昌机械制造有限公司 一种快拆式旋转筛粉机
CN103008243B (zh) * 2012-11-16 2016-03-30 云南钛业股份有限公司 一种丸料筛分装置
DK178512B1 (en) * 2014-11-25 2016-04-25 Jetek Rådgivende Maskiningeniør Aps Apparatus and use thereof for separating fibre material
CN104438042A (zh) * 2014-11-29 2015-03-25 肖金坚 一种物料筛分装置
CN105618365A (zh) * 2016-03-24 2016-06-01 宁波开诚生态技术有限公司 除杂分离机
CN110721896A (zh) * 2019-10-24 2020-01-24 安徽省环境科学研究院 一种高效节水淀粉浆渣分离筛及分离方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE30775C (de) * R. ZIEGER in Berlin Auslaufcylinder in Sichtmaschinen mit innerem Vorcylinder (abhänging vom Patente Nr. 6402.)
DE37093C (de) * A. STEIGER in Manchester, England Vertheilungs- und Speisevorrichtung bei Sichtemaschinen mit zwei in einander angeordneten Mänteln
US4202759A (en) * 1978-11-24 1980-05-13 Prater Industries, Inc. Centrifugal screening apparatus
DE4331782C1 (de) * 1993-09-18 1994-08-18 Reimelt Dietrich Kg Siebeinrichtung

Also Published As

Publication number Publication date
DE19819866C1 (de) 1999-04-15
DE59907833D1 (de) 2004-01-08
EP0955101A2 (fr) 1999-11-10
EP0955101A3 (fr) 2000-08-02

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