EP1764163B1 - Tamis à étoiles avec dispositif de nettoyage - Google Patents

Tamis à étoiles avec dispositif de nettoyage Download PDF

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Publication number
EP1764163B1
EP1764163B1 EP06014528A EP06014528A EP1764163B1 EP 1764163 B1 EP1764163 B1 EP 1764163B1 EP 06014528 A EP06014528 A EP 06014528A EP 06014528 A EP06014528 A EP 06014528A EP 1764163 B1 EP1764163 B1 EP 1764163B1
Authority
EP
European Patent Office
Prior art keywords
star
screening
scrapers
holder
cleaning
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.)
Not-in-force
Application number
EP06014528A
Other languages
German (de)
English (en)
Other versions
EP1764163A1 (fr
Inventor
Heinz Backers
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.)
Backers Maschinenbau GmbH
Original Assignee
Backers Maschinenbau GmbH
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Filing date
Publication date
Application filed by Backers Maschinenbau GmbH filed Critical Backers Maschinenbau GmbH
Publication of EP1764163A1 publication Critical patent/EP1764163A1/fr
Application granted granted Critical
Publication of EP1764163B1 publication Critical patent/EP1764163B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/52—Cleaning with brushes or scrapers
    • B07B1/526—Cleaning with brushes or scrapers with scrapers
    • 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
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
    • B07B1/155—Roller screens using corrugated, grooved or ribbed rollers the rollers having a star shaped cross section

Definitions

  • the invention relates to a star screen with cleaning device, according to claim 1 wherein along a conveying direction a plurality of transverse to the conveying direction Siebwellen follow each with several screening stars on each other, wherein the screening stars each have a plurality of sieve arms, wherein each provided a space between the adjacent on the same sieve shaft screen stars wherein the cleaning device on a holder scraper for entry into at least some of the interstices, wherein the holder is movable between a starting position in which the scrapers do not occur in the intermediate spaces, and a first cleaning position in which the scrapers occur in the intermediate spaces and wherein the holder is movable to a second cleaning position in which the scrapers contact the screen arms.
  • Stemsiebe are known from the DE 1 006 072 1 , The holder with the scrapers is arranged there below the screen and from a starting position into a cleaning position and back again movable. It has been found that the space between two sieve arms of the same sieve star is more or less glued by the bulk material.
  • a star screen with cleaning device is also from the DE 298 08 309 U known.
  • DE 298 08 309 discloses a cleaning device according to the preamble of claim 1.
  • Scrapers of the cleaning device are dimensioned and movable so that they can enter the spaces between adjacent screen stars or may have contact with Siebsternarmen. In this way, adhering to the hubs material should be replaced. For the movement of the scrapers in the relevant positions complex combined movements and drives of the cleaning device are required.
  • Object of the present invention is to provide a star screen with a cleaning device, wherein the cleaning of the spaces between adjacent sieve arms (the same sieve) are freed of dirt.
  • the cleaning device according to the invention is characterized in that the holder for the scrapers suspended from a parallelogram-like linkage and is pivotable along an arcuate path of movement. Due to the contact of the scrapers with the rotating sieve arms, the sieve arms experience a mechanical stress in the form of a shock. The adhering in the interstices of the Siebsternarme bulk material is thereby loosened and falls by the rotational movement of the screen stars out of the spaces.
  • the scrapers touch in the second cleaning position Siebsternarme the screen stars, which are arranged on screen shafts, which are adjacent to the screen shafts, between the screen stars the scrapers in the first cleaning position.
  • the meshing arrangement of screen shafts with screen stars is usual, in such a way that screen star arms intervene in the spaces between adjacent screen shafts.
  • the second cleaning position of the first cleaning position is downstream in the conveying direction.
  • the holder with the scrapers is moved obliquely forwards from the first cleaning position, in which the scrapers rest against the screen hubs.
  • This simply aligned movement allows a simple construction of the holder's suspension.
  • the rotation of the screen stars supports the return movement of the holder in the starting position. The scrapers can not be clamped by the rotation of the screen stars.
  • the scrapers touch, in particular free ends thereof, in the second cleaning position, the free ends of the sieve arms.
  • the free ends of the strainer arms hit during rotation of the scrapers, whereby the material located in the interstices of the strainer arms is released.
  • the strainer arms and the scrapers are made compliant material, whereby when hitting the sieve arm to the wiper both means yield and the rotation is not hindered lasting.
  • the screen stars advantageously define in each case a radial plane, in each of which a scraper engages in the second cleaning position.
  • the movement sequence of the scrapers is approximately in the same plane as the spanned by the respective sieve radial plane.
  • the holder is arranged with the scrapers above the screen shafts and movable downwards into the first cleaning position. Adding the gaps with bulk material within the cleaning device is thus avoided.
  • the holder with the scrapers during the process from the initial position into the first cleaning position describes an arcuate trajectory. On the trajectory the scrapers pass the second cleaning position.
  • the holder is suspended above the screen shafts on the linkage.
  • the linkage has a parallelogram-like shape, but also any other shape can be selected.
  • the holder is pivotable on the linkage along the arcuate, in particular quarter-circle-shaped movement path. Above all, a quarter-circle movement path allows the scrapers to be fed precisely to the radial plane of the screen stars (in the second cleaning position) and to touch the screen arms.
  • the scrapers are arranged on cross members.
  • the cross member in this case run parallel to the screen shafts, preferably each screen shaft is associated with a cross member with scrapers.
  • the movement of the holder takes place hydraulically.
  • the holder moves from the starting position in the cleaning positions by its own weight.
  • the return movement of the holder, so from the first cleaning position in the second cleaning position and in the starting position, preferably takes place hydraulically.
  • a single hydraulic drive is sufficient.
  • the cleaning device may also have a plurality of hydraulic drives, in which case each individual drive may be made smaller.
  • the star screen has a conveying direction predetermined by the rotational movement of the screen shafts so that the area of the screen arm arms facing the conveying side moves in the conveying direction.
  • the movement of the scrapers from the starting position into the cleaning positions takes place against the rotational movement of the sieve arms. It follows that the second cleaning position of each scraper is above and in the conveying direction behind the first cleaning position.
  • the movement of the holder preferably the lowering movement, limited by a particular adjustable stop.
  • a particular adjustable stop Depending on the arrangement of the cleaning device to the star screen an exact first and second cleaning position can be selected hereby.
  • the stop also prevents the frame from being pivoted beyond the first cleaning position during the movement from a starting position into the cleaning positions.
  • the movement of the holder takes place obliquely downward in the direction of the screen waves such that the scrapers are movable with their free ends approximately tangential to screen hubs and in particular up to this zoom.
  • the resulting first cleaning position causes a particularly advantageous and sustainable cleaning effect.
  • a star screen 10 known from the structure with transverse to a conveying direction 11 and in the conveying direction successive Siebwellen 12, 13, 14 has a cleaning device 15 above a sieve level formed by the sieve shafts.
  • Parts of the cleaning device 15, namely a holder 16 with scrapers 17 are from a starting position according to Fig. 2 along an arcuate, in particular approximately quarter-circular movement path in the direction of the star screen 10 and at the same time against the conveying direction 11 movable.
  • the scrapers enter intermediate spaces, between each on the same screen shaft 12, 13, 14 arranged screen stars 18, and free the spaces of dirt, space material or the like.
  • the aim is a scraper 17 per space.
  • the scrapers 17 are held on cross members 19, which are arranged parallel to the screen shafts 12, 13, 14 and in a common plane parallel to the screen plane.
  • more screen shafts 12, 13, 14 are provided as cross member 19, for example, twelve cross member 19 in at least sixteen screen shafts.
  • the cross member 19 are connected at their free ends to each other by longitudinal members 20, 21.
  • a central longitudinal member 22 is placed centrally on the cross member 19 and connected thereto.
  • transverse and longitudinal members 19 to 22 together form the rectangular frame-like holder 16 for the scrapers 17th
  • the holder 16 is suspended on a parallelogram-like linkage 23, consisting of four pivot levers 24, 25, 26, 27. Regardless of the movement of the pivot lever 24 to 27, the holder 16 is always parallel to the screen plane.
  • the holder 16 has about each one third of its length, approximately on the (in the conveying direction seen) 4th and 8th cross member 19 each have a reinforcing member 28, 29 parallel thereto. These are each provided with two articulation points 30, 31, 32, 33 for the movable connection with lower ends of the pivot levers 24 to 27. Corresponding to this, the pivot levers 24 to 27 are pivotally held at their upper free ends at articulation points 34, 35, 36, 37 , see in particular Fig. 5 ,
  • transverse bars 38, 39 The latter form with a further transverse bar 40 and two longitudinal bars 41, 42 a rectangular frame-like carrier 43 for the holder 16 hanging thereon.
  • a hydraulic piston-cylinder unit 44 is provided as a drive for the pivotal movement of the holder 16 relative to the carrier 43. This is pivoted at one end to a lower cross-beam 45 and at another end to an upper cross-beam 46.
  • the lower cross-beam 45 is aligned parallel to the cross member 39 and connects the pivot lever 24, 25 fixed to each other, about half the length thereof.
  • the lower cross-beam 45 approximately centrally a pivot point 47.
  • the upper cross member 46 is part, namely the base of an inverted U-shaped support bridge 48. Upright legs 49, 50 connect the upper cross member 46 fixed to the longitudinal bars 41, 42 at a short distance to the last in the conveying direction transverse bar 40. For pivotally receiving the piston Cylinder unit 44, the upper cross-beam 46 on the underside a pivot point 51.
  • the support bridge 48 still diagonal struts 52, 53 between the ends of the upper cross member 46 and the longitudinal members 41, 42, that is, in the direction of the cross member 40th
  • the hub width is about twice as large as the width of the screen arm in the axial direction or something more. Accordingly, the spaces between the sieve arms in the axial direction are as large as or slightly larger than the width of the sieve arm 55 in the axial direction. Accordingly, the scrapers 17 in the axial direction are about as wide as the Siebsternarme, namely suitable for the width of the spaces.
  • “Touching” here means a light contact with the usually elastic or resilient Siebsternarmen 55 so as to slightly deform the Siebsternarme 55 and so adhering dirt, overburden or the like to solve. In particular, this applies to debris in spaces between each of the same sieve star 12-14 sieve arms 55 (gaps in the circumferential direction, as opposed to the spaces in the axial direction in which the scrapers 17 occur).
  • the free ends of the screen arm 55 of each sieve star 18 define an outer circumferential circle into which the respective associated wiper 17 in the (second) cleaning position according to Fig. 3 just enter. Exactly this cleaning position is also in Fig. 1 shown.
  • the cleaning device 15 is held on the star screen 10 on two support bridges 56, 57. These stand on lateral cheeks 58, 59 of the star screen 10 and vice versa are U-shaped.
  • the front in the conveying direction support bridge 56 as a base to a cross member 60 which is mounted parallel to the cross member 39 and in the conveying direction shortly before the same under the longitudinal bars 41, 42.
  • a transverse strut 61 of the support bridge 57 extends directly below that in the conveying direction last crossbar 40 and is fixedly connected to this or the adjacent longitudinal beams 41, 42.
  • Bridge arms 62, 63, 64, 65 extend from the transverse struts 60, 61 except for the cheeks 58, 59.
  • one wall each is provided between the bridge arms 62, 63 and 64, 65 66, 67 confiscated.
  • the wall 66, 67 may extend even further in the conveying direction or against the conveying direction, as in the Fig. 1 to 4 shown.
  • the walls 66, 67 do not extend completely down to the cheeks 58, 59. Rather, a side wall 68, 69 are provided in each of these spaces on both sides of the screen shafts 12-14. These extend in the conveying direction along all screen waves and thus prevent lateral slippage of the material to be screened from the star screen 10.
  • the side walls 68, 69 may be inclined, see Fig. 1 , to form an upwardly flared funnel-shaped cross-section.
  • the walls 66, 67 extend in cross-section not in the vertical direction, but also funnel-shaped but with upwardly decreasing cross-section, see also Fig. 1 ,
  • the bridge legs 62, 65 in the region of the walls 66, 67 are not vertically but obliquely directed.
  • the scrapers 17 are preferably formed substantially rectangular with a maximum extent in a plane transverse to the conveying direction.
  • the scrapers 17 may be spoon-shaped, namely with a slightly wider Abstreifer Structure and a subsequent thereto and contrast somewhat narrower handle. It is expedient to have sharp lower and lateral edges of the wiper for carrying the material to be wiped off.
  • the scrapers 17 may be individually secured to the cross members 19. Preferred is an embodiment in which all scrapers of a cross member 19 are an integral part of a one-piece scraper formation or scraper mat. In this case, a web of the scraper formation is connected parallel to the respective cross member 19 with this. From the web, the individual scrapers 17 extend down, see in particular Fig. 1 , Web and scraper 17 are integrally formed there with each other.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Claims (13)

  1. Tamis à étoiles (10) avec un dispositif de nettoyage (15), dans lequel plusieurs arbres de tamis (12, 13, 14) disposés transversalement à une direction de transport, chaque fois avec plusieurs étoiles de tamis, se succèdent le long de la direction de transport, dans lequel les étoiles de tamis (18) présentent respectivement plusieurs bras d'étoiles de tamis (55), dans lequel il est chaque fois prévu un espace intermédiaire entre les étoiles de tamis (18) voisines sur le même arbre de tamis (12, 13, 14), dans lequel le dispositif de nettoyage (15) présente sur un support (16) des racloirs (17) destinés à pénétrer dans au moins certains des espaces intermédiaires, dans lequel le support (16) est déplaçable entre une position initiale, dans laquelle les racloirs (17) ne sont pas engagés dans les espaces intermédiaires, et une première position de nettoyage, dans laquelle les racloirs (17) sont engagés dans les espaces intermédiaires, et dans lequel le support (16) est déplaçable dans une deuxième position de nettoyage, dans laquelle les racloirs (17) ont un contact avec les bras d'étoiles de tamis (55), caractérisé en ce que le support (16) pour les racloirs (17) est suspendu à une tringlerie en forme de parallélogramme (23) et peut pivoter le long d'une trajectoire de déplacement en forme d'arc.
  2. Tamis à étoiles selon la revendication 1, caractérisé en ce que les racloirs (17) ont dans la deuxième position de nettoyage un contact avec les bras d'étoiles de tamis (55) des étoiles de tamis (18), qui sont disposées sur des arbres de tamis (13), qui sont respectivement voisins des arbres de tamis (12) entre les étoiles de tamis (18) desquels les racloirs (17) pénètrent dans la première position de nettoyage.
  3. Tamis à étoiles selon la revendication 1 ou la revendication 2, caractérisé en ce que la deuxième position de nettoyage est disposée après la première position de nettoyage dans la direction de transport.
  4. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que les racloirs (17), en particulier leurs extrémités libres, ont dans la deuxième position de nettoyage un contact avec des extrémités libres des bras d'étoiles de tamis (55).
  5. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que chaque étoile de tamis (18) définit un plan radial, dans lequel se trouve également le racloir (17) touchant les bras d'étoiles de tamis (55) de cette étoile de tamis.
  6. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que le support (16) avec les racloirs (17) est disposé au-dessus des arbres de tamis (12, 13, 14) et est déplaçable vers le bas dans les positions de nettoyage.
  7. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que le support (16) avec les racloirs (17) est déplaçable le long d'une trajectoire de déplacement en forme d'arc entre la position initiale et la première position de nettoyage et dépasse en l'occurrence la deuxième position de nettoyage.
  8. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que le support (16) pour les racloirs (17) est suspendu à la tringlerie en forme de parallélogramme (23) au-dessus des arbres de tamis (12, 13, 14) et peut pivoter le long de la trajectoire de déplacement en forme d'arc, en particulier en forme de quadrant.
  9. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que les racloirs (17) sont disposés sur des supports transversaux (19), qui s'étendent parallèlement aux arbres de tamis (12, 13, 14), et en ce que plusieurs supports transversaux (19) font partie du support en forme de cadre (16).
  10. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que le déplacement du support (16) est effectué de façon hydraulique, dans lequel le déplacement du support (16) d'une position initiale dans les positions de nettoyage est effectué de préférence par le poids propre et le déplacement de retour du support (16) est effectué de façon hydraulique.
  11. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que le déplacement des racloirs (17) de la position initiale dans la deuxième position de nettoyage est effectué contre le mouvement de rotation des étoiles de tamis (18).
  12. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce qu'il est prévu une butée en particulier réglable pour la
    limitation du déplacement du support (16), en particulier du mouvement de descente.
  13. Tamis à étoiles selon la revendication 1 ou d'autres revendications, caractérisé en ce que le déplacement du support (16) est effectué essentiellement en oblique vers le bas en direction des arbres de tamis (12, 13, 14), en particulier de telle manière que les racloirs (17) soient, avec leurs extrémités libres, déplaçables environ tangentiellement à des moyeux d'étoiles de tamis (54) et en particulier jusqu'à ceux-ci.
EP06014528A 2005-09-17 2006-07-13 Tamis à étoiles avec dispositif de nettoyage Not-in-force EP1764163B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005044552A DE102005044552B4 (de) 2005-09-17 2005-09-17 Sternsieb mit Reinigungsvorrichtung

Publications (2)

Publication Number Publication Date
EP1764163A1 EP1764163A1 (fr) 2007-03-21
EP1764163B1 true EP1764163B1 (fr) 2012-01-18

Family

ID=37546668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06014528A Not-in-force EP1764163B1 (fr) 2005-09-17 2006-07-13 Tamis à étoiles avec dispositif de nettoyage

Country Status (3)

Country Link
EP (1) EP1764163B1 (fr)
AT (1) ATE541648T1 (fr)
DE (1) DE102005044552B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105312226A (zh) * 2015-10-21 2016-02-10 常州市武进牛塘红星制刷厂 刮环型振动筛
CN112403898A (zh) * 2020-10-29 2021-02-26 李克芽 一种介电陶瓷粉末制备用筛分装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008023567A1 (de) 2008-05-05 2009-11-12 J. Willibald Gmbh Siebvorrichtung sowie Verfahren zum Sieben von verrottungsfähigem Material
CN101607251B (zh) * 2009-07-20 2012-07-04 济南中燃科技发展有限公司 一种防粘筛
DE102010027665B4 (de) 2010-07-19 2014-08-07 J. Willibald Gmbh Siebwalzen für eine Siebeinheit zum Sieben von verrottungsfähigem Material
RU2457908C1 (ru) * 2011-07-06 2012-08-10 Лев Николевич Бурков Способ очистки плоских сортировальных решет
CN105537123A (zh) * 2016-02-02 2016-05-04 浙江海洋学院 一种厚壳贻贝分拣装置
CN108097419B (zh) * 2017-12-18 2019-08-13 南通惠农生物有机肥有限公司 一种有机肥筛分设备
RU2683731C1 (ru) * 2018-06-22 2019-04-01 Игорь Феликсович Шлегель Устройство для грохочения сыпучих материалов

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29808309U1 (de) * 1998-05-11 1998-07-23 BG Recyclingmaschinen GmbH, 36341 Lauterbach Siebanlage
DE10060721A1 (de) * 2000-12-07 2002-06-13 Hermann Backers Maschb Reinigungsvorrichtung für ein Sternsieb oder Scheibensieb
DE10114957C1 (de) * 2001-03-27 2002-07-18 Eurec Technology Gmbh Entsorgu Abstreifrechen für eine Siebscheiben- und Wellensäuberungs-Einrichtung
DE10247844C1 (de) * 2002-10-14 2003-10-30 Neuenhauser Maschb Gmbh Reinigungsvorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105312226A (zh) * 2015-10-21 2016-02-10 常州市武进牛塘红星制刷厂 刮环型振动筛
CN112403898A (zh) * 2020-10-29 2021-02-26 李克芽 一种介电陶瓷粉末制备用筛分装置

Also Published As

Publication number Publication date
EP1764163A1 (fr) 2007-03-21
DE102005044552B4 (de) 2013-06-06
DE102005044552A1 (de) 2007-03-22
ATE541648T1 (de) 2012-02-15

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