WO2000007743A1 - Tamis a grilles a rouleaux - Google Patents

Tamis a grilles a rouleaux Download PDF

Info

Publication number
WO2000007743A1
WO2000007743A1 PCT/EP1999/004667 EP9904667W WO0007743A1 WO 2000007743 A1 WO2000007743 A1 WO 2000007743A1 EP 9904667 W EP9904667 W EP 9904667W WO 0007743 A1 WO0007743 A1 WO 0007743A1
Authority
WO
WIPO (PCT)
Prior art keywords
disks
screen
sieve
roller grate
screen according
Prior art date
Application number
PCT/EP1999/004667
Other languages
German (de)
English (en)
Inventor
Thomas Müller
Ulrich Penndorf
Original Assignee
Zemag Gmbh
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 Zemag Gmbh filed Critical Zemag Gmbh
Publication of WO2000007743A1 publication Critical patent/WO2000007743A1/fr

Links

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
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers

Definitions

  • the invention relates to a roller screen for the fine screening of classifiable goods.
  • Non-vibrating classifying machines with a defined number of rollers, which are arranged in a certain division (distance between the axes of two adjacent rollers) in a plane, have been part of the prior art for some time.
  • the individual rollers are composed of a large number of screen disks or disk packs.
  • the sieve disks or disk packs are usually pushed onto the shaft and fastened in the usual way.
  • the sieve disks have different basic contours, e.g. Triangular, octagonal or
  • the former have a pitch of up to 150 mm and are used for coarse screening.
  • Fine gratings have a division of up to 150 mm. They are used for fine grain screening of less than 30 mm.
  • roller grate screens are equipped with one drive motor per roller.
  • a major advantage of this drive system is the optimal adaptation of the motors to different loads on the roller screen. Larger motors are installed on the feed side and smaller motors near the screen overflow. If one or two rollers fail, the screen can continue to be operated temporarily. This results in simplified maintenance and
  • roller grate screens equipped with circular screen disks are only suitable to a limited extent for classifying difficult-to-screen materials, for example fine-grained hard coal with high surface moisture. Sieve material transport presents difficulties.
  • roller grate screen for fine grain screening with one drive motor per roller is to be developed, which is particularly suitable for processing difficult-to-screen goods, the one described above
  • FIG. 1 Top view and side view of two adjacent rollers 1, consisting of disk packs 2, with meshing meshing disks 3 and indicated
  • FIG. 3 section of a disk package 2 with attached comb scraper 4;
  • FIG. 4 'Screen 3 with recesses 5 made on its circumference;
  • FIG. 5 recess 5 as individual part A of the sieve disk 3.
  • the screen discs 3 of adjacent rollers 1 interlock.
  • the distance between the sieve disks 3 on a roller 1 can be chosen larger than is possible with opposing sieve disks 3, which has advantages in terms of production technology.
  • By combing the sieve disks 3, an improved sieving result can be achieved.
  • Disc packs 2 are advantageously used in a welded construction to further reduce the manufacturing effort.
  • a comb scraper 4 can be used from a span 6 of 10 mm.
  • the large number of individual scrapers used so far can thus be dispensed with.
  • sieve disks 3 with a round outer contour, which are provided with a defined number of ends 5, are used.
  • the distribution of the depressions 5 on the circumference of the sieve disc 3 can be regular as well as irregular. In the example shown, 24 depressions 5 are even on the circumference
  • the sieve 3 arranged.
  • the depressions 5 ultimately provide for the transport of the material to be screened on the screen plate. Particularly in the case of difficult-to-screen goods, a significant improvement in the sieve sludge transport compared to the use of circular sieve disks 3 without depressions 5 can be observed. The number and the specific dimensions are decisive for this.
  • the recesses 5 have the shape of a circular section, which can be slightly embedded, so that a distance L is established.
  • a ratio of width B to depth T of 5: 1 to 8: 1 has proven to be advantageous. In the example shown in the drawing, a ratio of approximately 6.6: 1 was selected.
  • the concrete We te should be designed so that the predetermined maximum grain size is not exceeded, but the Siebgutiransport must be guaranteed. This is expressed in measures
  • Size ratio in the above example 4 mm 0.6 mm with a disk diameter D of 108.5 mm.

Landscapes

  • Rolls And Other Rotary Bodies (AREA)
  • Feeding And Guiding Record Carriers (AREA)
  • Road Paving Machines (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

L'invention concerne un tamis à grilles à rouleaux pour le tamisage fin de substances difficiles à tamiser. Le tamis à grilles à rouleaux est constitué essentiellement de rouleaux de tamisage (1), placés les uns derrière les autres dans un plan, pourvus de disques de tamisage (3) ou de paquets de disques (2). Ces rouleaux de tamisage tournent dans le même sens, dans le sens de transport, les disques de tamisage présentant une forme de base périphérique circulaire. Un tel tamis se caractérise par l'imbrication du type peigne des disques de tamisage de rouleaux voisins, ce qui crée des fentes (6) étroites, par l'utilisation de racleurs en peigne (4) pour le nettoyage des rouleaux, et par la forme des disques de tamisage utilisés. Ces derniers, présentent, sur leur périphérie, des cavités (5) en forme de segments de cercle et garantissent ainsi le transport fiable du produit difficile à tamiser sur le fond de tamisage.
PCT/EP1999/004667 1998-07-31 1999-07-05 Tamis a grilles a rouleaux WO2000007743A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29813559.0 1998-07-31
DE29813559U DE29813559U1 (de) 1998-07-31 1998-07-31 Walzenrostsieb

Publications (1)

Publication Number Publication Date
WO2000007743A1 true WO2000007743A1 (fr) 2000-02-17

Family

ID=8060580

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/004667 WO2000007743A1 (fr) 1998-07-31 1999-07-05 Tamis a grilles a rouleaux

Country Status (3)

Country Link
DE (1) DE29813559U1 (fr)
WO (1) WO2000007743A1 (fr)
ZA (1) ZA987891B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107457174A (zh) * 2017-10-10 2017-12-12 天津百利阳光环保设备有限公司 一种筛分生活垃圾的圆盘筛
US10111385B2 (en) 2016-06-24 2018-10-30 Jackrabbit Nut harvester with separating disks
US11432463B2 (en) 2019-02-08 2022-09-06 Jackrabbit, Inc. Nut harvester with a removable assembly and a method of replacing a removable assembly of a nut harvester

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1524360A (en) * 1924-05-19 1925-01-27 Lauritzen Albert Potato-digger grid
DE619069C (de) * 1935-09-21 Buckau R Wolf Akt Ges Maschf Abstreichvorrichtung fuer Scheibenwalzenroste
US3985233A (en) * 1975-12-11 1976-10-12 Weyerhaeuser Company Vibratory seedling cleaner
EP0093220A1 (fr) * 1982-05-04 1983-11-09 Beloit Corporation Procédé et installation pour récupérer des combustibles et autres produits dans les déchets en utilisant des tamis à disques
WO1997009129A1 (fr) * 1995-09-06 1997-03-13 Rotom Verkstäder Ab Rotor a disques de tamisage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE619069C (de) * 1935-09-21 Buckau R Wolf Akt Ges Maschf Abstreichvorrichtung fuer Scheibenwalzenroste
US1524360A (en) * 1924-05-19 1925-01-27 Lauritzen Albert Potato-digger grid
US3985233A (en) * 1975-12-11 1976-10-12 Weyerhaeuser Company Vibratory seedling cleaner
EP0093220A1 (fr) * 1982-05-04 1983-11-09 Beloit Corporation Procédé et installation pour récupérer des combustibles et autres produits dans les déchets en utilisant des tamis à disques
WO1997009129A1 (fr) * 1995-09-06 1997-03-13 Rotom Verkstäder Ab Rotor a disques de tamisage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10111385B2 (en) 2016-06-24 2018-10-30 Jackrabbit Nut harvester with separating disks
CN107457174A (zh) * 2017-10-10 2017-12-12 天津百利阳光环保设备有限公司 一种筛分生活垃圾的圆盘筛
US11432463B2 (en) 2019-02-08 2022-09-06 Jackrabbit, Inc. Nut harvester with a removable assembly and a method of replacing a removable assembly of a nut harvester

Also Published As

Publication number Publication date
DE29813559U1 (de) 1998-11-12
ZA987891B (en) 1999-04-26

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