EP0265421A2 - Crible à barreaux - Google Patents

Crible à barreaux Download PDF

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Publication number
EP0265421A2
EP0265421A2 EP87890236A EP87890236A EP0265421A2 EP 0265421 A2 EP0265421 A2 EP 0265421A2 EP 87890236 A EP87890236 A EP 87890236A EP 87890236 A EP87890236 A EP 87890236A EP 0265421 A2 EP0265421 A2 EP 0265421A2
Authority
EP
European Patent Office
Prior art keywords
rods
screen according
bars
bar screen
carrier
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Withdrawn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
EP87890236A
Other languages
German (de)
English (en)
Other versions
EP0265421A3 (fr
Inventor
Harald Dipl.-Ing. Dr. Hutterer
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.)
Voestalpine AG
Original Assignee
Voestalpine AG
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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0265421A2 publication Critical patent/EP0265421A2/fr
Publication of EP0265421A3 publication Critical patent/EP0265421A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Definitions

  • the invention relates to a bar screen with freely cantilevered, approximately parallel bars fixed on one side in a carrier, the screen passage being determined by the clear distance between the bars and the screen overflow exiting at the free end of the bars.
  • Such bar screens are advantageously suitable for the treatment of waste. Since the ends of the rods run free, the risk of clogging by flat or elongated parts in the waste, such as textiles, plastic films, cords, tapes, stockings, etc., is reduced compared to a sieve with sieve openings that are limited on all sides.
  • the sieve rods are arranged in one plane and the material to be sieved is transported in that the sieve rods are inclined downwards towards their free end. This enables linear transport, but there is no shifting of the material to be screened, so that the screen effect is incomplete.
  • a screening machine with a plurality of rotatably mounted, axially superimposed conical screen surfaces has become known.
  • a rotary sorting device can be found in DE-A1-31 19 728, in which a cylinder with recesses for removing sorted grains is provided.
  • a sieve drum for garbage has become known, in which stowage devices with baffles for pre-shredding the garbage are arranged.
  • the object of the invention is to improve the sieving effect of a bar sieve.
  • the invention consists essentially in that the carrier of the rods is rotatably mounted, that the carrier carries in the region of its periphery the rods which extend approximately in the direction of the axis of rotation, and that the carrier is hollow and has at least one feed opening at one end and is in open connection with the space enclosed by the rods at the other end.
  • the rods are connected to the carrier along a circle and describe a circular cylinder jacket. It is also possible that the space enclosed by the rods widens conically in the direction of the free end of the rods, but the arrangement of the rods on a circular cylinder jacket is more favorable.
  • the axis of rotation is advantageously inclined downwards in the direction of the free end of the rods, so that the screenings are transported in the direction of the free end of the rods.
  • An inclination of the axis of rotation of 3 to 8 ° is advantageous here.
  • At least one stationary obstacle is expediently arranged in the rotational path of the elastic rods, in the upper region thereof.
  • Such an obstacle causes the rods to vibrate during the rotation of the rod screen, which improves the transport of the screenings towards the free ends of the bars, the layering of the screenings and the screening effect and also a self-cleaning of the bars from stuck parts of the screenings is favored.
  • the obstacle is located in the upper area of the rotation path of the rods, it does not interfere with the sieve passage.
  • An obstacle located in the lower area would have the effect that parts of the sieve passage get caught on this obstacle.
  • the obstacle is from a role, the axis of rotation is approximately parallel to the axis of rotation and which is preferably coated with sound-absorbing material.
  • the rods can be arranged parallel to the generatrix of the cylinder jacket described by the rods.
  • the rods are preferably arranged obliquely to the generatrices, which also favors the sieving effect. Hiebei should preferably not or not significantly exceed the angle of inclination of the axis of rotation of the rods with the generatrix of the cylinder, so that the promotion of the screenings to the free ends of the rods is not affected by the inclination of the rods.
  • the rods preferably run in the direction of rotation in the direction of their free ends. This lagging arrangement promotes the conveyance of the screenings to the free ends of the rods.
  • the rods can advantageously be fixed to a retaining ring which is connected to the rotatable carrier in an exchangeable manner.
  • the bar screen can be adapted to the respective screening task.
  • the retaining ring can be exchanged in a simple manner and it is thus possible to use retaining rings with rods which are at different distances from one another.
  • Retaining rings can also be used which carry rods which form different angles with the generatrices of the circular cylinder described by the rods.
  • Devices for disintegrating the material to be screened can be arranged within the carrier formed by a closed drum.
  • the carrier can be designed as a sieve drum with particular advantage.
  • the end of the task is at the same height as or lower than the discharge end of the first conveyor belt. Since such elongated parts can only fall through the rods of the rod screen lying in the direction of the axis of rotation, they reach a conveyor belt running beneath the rod screen in the longitudinal direction of the conveyor belt.
  • the rods are 1 the rods, the free end of which is denoted by 2.
  • the rods are fixed to a hollow cylindrical support 3.
  • the cylinder 3 is a circular cylinder and the rods 1 describe a circular cylinder jacket.
  • the axis of rotation 4 of the bar screen is inclined towards the free ends 2 of the bars at an angle ⁇ of approximately 3 to 8 ° down to the horizontal 5.
  • the material to be screened for example the waste, is introduced into the hollow cylindrical carrier 3 via a conveyor belt 6.
  • the screenings are conveyed in the direction of arrow 7 to the discharge end formed by the free ends 2 of the bars 1.
  • a conveyor belt 8 is arranged below the area formed by the rods 1, the conveying direction of which is indicated by the arrow 9.
  • the sieve passage falling through the spaces between the rods 1 falls onto the conveyor belt 8 and is conveyed to the discharge end 10 of this conveyor belt 8.
  • the feed end 11 of a second conveyor belt 12 is arranged at a distance a from the discharge end 10 of the conveyor belt 8. This feed end 11 of the conveyor belt 12 is lower or at the same height as the discharge end 10 of the conveyor belt 8.
  • the sieve passage thus falls through the gap a onto an underlying conveyor belt 13 which removes the sieve passage.
  • the axis of rotation 4 of the bar screen is again inclined by the angle ⁇ with respect to the horizontal 5.
  • the embodiment according to FIGS. 3 and 4 differs from the embodiment according to FIG. 1 in that the rods 14 are inclined obliquely to the generatrices of the circular cylinder described by the rods. The angle of inclination of these rods to the generatrices is denoted by ⁇ .
  • the direction of rotation of the bar screen is indicated by arrows 15. The rods are therefore arranged obliquely to the direction of rotation towards the free ends 16 of the rods.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
EP87890236A 1986-10-24 1987-10-23 Crible à barreaux Withdrawn EP0265421A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2841/86 1986-10-24
AT284186A AT386764B (de) 1986-10-24 1986-10-24 Stangensieb

Publications (2)

Publication Number Publication Date
EP0265421A2 true EP0265421A2 (fr) 1988-04-27
EP0265421A3 EP0265421A3 (fr) 1989-01-18

Family

ID=3541146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890236A Withdrawn EP0265421A3 (fr) 1986-10-24 1987-10-23 Crible à barreaux

Country Status (2)

Country Link
EP (1) EP0265421A3 (fr)
AT (1) AT386764B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285905A (en) * 1992-07-16 1994-02-15 Laprade Real R Screening assembly for soil
US6609617B1 (en) 2002-04-08 2003-08-26 Inco Limited Trommel
DE102013106570A1 (de) 2013-06-24 2014-12-24 Thyssenkrupp Resource Technologies Gmbh Siebstange, Stangensieb und Verfahren zur Herstellung einer Siebstange
EP3248695A1 (fr) * 2016-05-27 2017-11-29 Schlüter Friedrich-Wilhelm Dispositif de tamisage
CN110918469A (zh) * 2019-12-10 2020-03-27 李燕 一种建筑桥梁施工用沙石筛选装置
CN114210542A (zh) * 2022-01-20 2022-03-22 射阳三德机械制造有限公司 一种建筑工程用筛料设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1389231A (en) * 1915-03-30 1921-08-30 Drakes Ltd Mechanism for screening or sifting granulated substances
FR1449000A (fr) * 1965-06-30 1966-03-18 Perrussel Freres Ets Calibreur cylindrique pour racines et tubercules, tournant autour de son axe et dont la paroi est constituée d'éléments rigides, mobiles dans les couronnes assurant leur fixation
DE3102846A1 (de) * 1981-01-29 1982-08-19 Mannesmann Veba Umwelttechnik GmbH, 4690 Herne Siebtrommel fuer muell und verfahren zu deren betrieb
EP0086488A2 (fr) * 1982-02-16 1983-08-24 Deutsche Kommunal-Anlagen Miete GmbH Dispositif de déchargement pour four à tambour rotatif
SU1050757A1 (ru) * 1982-07-07 1983-10-30 Московский Ордена Трудового Красного Знамени Автомобильно-Дорожный Институт Устройство дл выделени твердых частиц из суспензий
EP0103831A2 (fr) * 1982-09-17 1984-03-28 Mogensen GmbH & Co KG Dispositif de criblage, notamment pour matières difficiles à cribler

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810587C2 (de) * 1978-03-11 1984-11-08 Siebtechnik GmbH, 4330 Mülheim Siebmaschine
DE3119728A1 (de) * 1980-12-18 1982-07-29 Seirei Industry Co., Ltd., Okayama Zylindertyp-rotations-sortiergeraet
BE897002A (nl) * 1983-06-09 1983-10-03 Backus Petrus A M Lengte vorm en kromsorteermachine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1389231A (en) * 1915-03-30 1921-08-30 Drakes Ltd Mechanism for screening or sifting granulated substances
FR1449000A (fr) * 1965-06-30 1966-03-18 Perrussel Freres Ets Calibreur cylindrique pour racines et tubercules, tournant autour de son axe et dont la paroi est constituée d'éléments rigides, mobiles dans les couronnes assurant leur fixation
DE3102846A1 (de) * 1981-01-29 1982-08-19 Mannesmann Veba Umwelttechnik GmbH, 4690 Herne Siebtrommel fuer muell und verfahren zu deren betrieb
EP0086488A2 (fr) * 1982-02-16 1983-08-24 Deutsche Kommunal-Anlagen Miete GmbH Dispositif de déchargement pour four à tambour rotatif
SU1050757A1 (ru) * 1982-07-07 1983-10-30 Московский Ордена Трудового Красного Знамени Автомобильно-Дорожный Институт Устройство дл выделени твердых частиц из суспензий
EP0103831A2 (fr) * 1982-09-17 1984-03-28 Mogensen GmbH & Co KG Dispositif de criblage, notamment pour matières difficiles à cribler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Woche 84/28, 22. August 1984, Zusammenfassung Nr. 84-175033/28, Derwent Publications Ltd, London, GB; & SU-A-1 050 757 (MOSCOW AUTO ROAD CONSTR.) 30-10-1983 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285905A (en) * 1992-07-16 1994-02-15 Laprade Real R Screening assembly for soil
US6609617B1 (en) 2002-04-08 2003-08-26 Inco Limited Trommel
WO2003086663A1 (fr) * 2002-04-08 2003-10-23 Inco Limited Trommel
DE102013106570A1 (de) 2013-06-24 2014-12-24 Thyssenkrupp Resource Technologies Gmbh Siebstange, Stangensieb und Verfahren zur Herstellung einer Siebstange
WO2014206772A1 (fr) * 2013-06-24 2014-12-31 Thyssenkrupp Steel Europe Ag Barreau de crible, crible à barreaux et procédé de fabrication d'un barreau de crible
AU2014301397B2 (en) * 2013-06-24 2018-03-22 Flsmidth A/S Screen bar, bar screen and method for producing a screen bar
US10124372B2 (en) 2013-06-24 2018-11-13 Thyssenkrupp Steel Europe Ag Screen bar, bar screen and method for producing a screen bar
EP3248695A1 (fr) * 2016-05-27 2017-11-29 Schlüter Friedrich-Wilhelm Dispositif de tamisage
CN110918469A (zh) * 2019-12-10 2020-03-27 李燕 一种建筑桥梁施工用沙石筛选装置
CN114210542A (zh) * 2022-01-20 2022-03-22 射阳三德机械制造有限公司 一种建筑工程用筛料设备

Also Published As

Publication number Publication date
ATA284186A (de) 1988-03-15
EP0265421A3 (fr) 1989-01-18
AT386764B (de) 1988-10-10

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Inventor name: HUTTERER, HARALD, DIPL.-ING. DR.