EP0218575A2 - Dispositif de tamisage - Google Patents

Dispositif de tamisage Download PDF

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Publication number
EP0218575A2
EP0218575A2 EP86890276A EP86890276A EP0218575A2 EP 0218575 A2 EP0218575 A2 EP 0218575A2 EP 86890276 A EP86890276 A EP 86890276A EP 86890276 A EP86890276 A EP 86890276A EP 0218575 A2 EP0218575 A2 EP 0218575A2
Authority
EP
European Patent Office
Prior art keywords
screening device
grate bars
drives
frame
grate
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Withdrawn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
EP86890276A
Other languages
German (de)
English (en)
Other versions
EP0218575A3 (fr
Inventor
Johannes Brüderlein
Leander Ahorner
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.)
IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
Original Assignee
IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
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
Priority claimed from AT104886A external-priority patent/AT389062B/de
Application filed by IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft filed Critical IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
Publication of EP0218575A2 publication Critical patent/EP0218575A2/fr
Publication of EP0218575A3 publication Critical patent/EP0218575A3/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Withdrawn legal-status Critical Current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
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • 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
    • B07B1/48—Stretching devices for screens
    • B07B1/485—Devices for alternately stretching and sagging screening surfaces

Definitions

  • the invention relates to a sieve device with a grate, which has a plurality of grate bars, which are connected by flexible sieve elements attached to them, bridging the gaps between the grate bars.
  • a known device of this type in which the grate bars are arranged transversely to the sieving direction, at least two frame systems which are moved relative to one another are provided, the grate bars of the systems interlocking in pairs.
  • the invention solves the two tasks, on the one hand to increase the sieving capacity and, on the other hand, to largely compensate the mass forces within the grate.
  • the first object is achieved in that the longitudinal or, as is known, transverse to the direction of the grate bars on a frame in several directions, preferably in two opposite directions, movably mounted in a plane perpendicular to their longitudinal axes and individually on both of them Ends are provided with a drive that sets them in motion.
  • An advantageous embodiment of the invention is that the grate bars are mounted in the frame and the drives are unbalance drives. Instead of the unbalance drives, rotating eccentrics can also be used, the grate bars being prevented from rotating about their longitudinal axis.
  • the mass balance can be done by successive alternating or in groups successive opposite directions of rotation, but also by using counterweights.
  • the arrangement of the drives can be varied within wide limits by phase shifts.
  • the phase angle is preferably , where a is an integer greater than 1.
  • the number of drives in a group can be equal to the number a.
  • the sieve In the case of grate bars running longitudinally to the direction of sieve, the sieve is, as is known per se, inclined in the direction of sieve and the outermost flexible sieve elements are tightly connected to the sieve frame.
  • Such an arrangement has the advantage of eliminating the otherwise unavoidable leaks at the lateral longitudinal edges of the sieve when sieving fine goods.
  • the task of the material to be screened advantageously takes place at a sufficiently large distance from the upper end of the screen to prevent problems with the sealing there.
  • the sieve elements At the lower end of the sieve, the sieve elements end at a sufficient distance from the sieve frame to allow the overflow to leave the sieve.
  • the invention relates to further refinements.
  • FIG. 1 shows a longitudinal section
  • FIG. 2 shows a top view
  • FIG. 3 shows a cross section through a screening device according to the invention
  • FIG. 4 shows the mounting of a grate bar and an unbalance drive assigned to it
  • FIGS. 5 and 6 show a longitudinal and cross section a screening device in which the grate bars are mounted on rotating eccentrics
  • Fig. 7 a storage of the grate bars by means of leaf springs
  • Figs. 8 and 9 a leaf spring storage of both a grate bar and the shaft of an eccentric drive.
  • a plurality of grate bars 2 are provided transversely to the direction of sieve, the spacing of which is bridged by sieve elements 3, so that a continuous sieve surface arises.
  • the screening device also has a feed hopper 4 and an outlet opening 5 and is provided with a cover 6.
  • the device is supported by springs 7 on a foundation 8.
  • Drive motors 9 are provided laterally on this foundation and drive the unbalance drives of the grate bars by means of shaft 10.
  • the grate bars consist of a tube 11, each of which has a welded flange 12 at its ends, which is firmly connected to a disk 14 by means of screws 13.
  • This disc is fastened to the frame 1 by means of a rubber ring 15 and can thus oscillate in the plane perpendicular to the rod axis.
  • the disk 14 is provided with a hub 16 on which a disk 18 is rotatably mounted by means of roller bearings 17. This is fixedly connected to a further disk 19, which is mounted on a shaft stub 20 by means of a wedge 21 in a rotationally fixed manner.
  • the shaft end 20 is seated in a tube 22 which passes through the hollow grate rod 11 and is connected in the same way to an unbalance drive on the other end thereof.
  • a connection is made between the motor 9 and the shaft tube 22 by means of the shaft 10.
  • the disc 18 is provided with a plurality of holes 23 into which weights 24 can be inserted.
  • the tube 11 carries a support 25 which is firmly connected to the sieve element 26.
  • the grate bars 11 are rotatably mounted on rotating eccentrics 31, but are prevented from being rotated by arms 32 which sit on the grate bars 11 and are combined to form two groups by means of longitudinal bars 33, 34, so that the grate bars of each group have the same phase position of the eccentric 31.
  • the eccentrics can have a common drive exhibit.
  • the eccentrics 31 are seated on a shaft 35 passing through the tubular tube rod 11 and are rotatably mounted on the frame by means of a roller bearing 36 and carry a counterweight 37 for mass balance.
  • the unbalance drives 38 are resiliently mounted on the frame 1 by means of leaf springs 39, whereby they can only carry out vibrations parallel to the plane of the frame around the grate bars moved by them.
  • the leaf springs 39 do not have to run perpendicular to the frame plane in their rest position, but they can enclose an angle smaller than 90 ° with this plane. The direction of vibration of the grate bars can thus be selected.
  • This leaf spring arrangement can also be used with eccentric drives, as can be seen from FIGS. 8 and 9.
  • the eccentric shaft 35 is supported by a bearing 40 which is resiliently connected to the frame 1 by means of leaf springs 41.
  • the grate bar is also resiliently connected to the frame 1 by means of a pair of leaf springs 39.
  • the grate bars only vibrate parallel to the frame plane. If the leaf springs 39 and / or 41 are arranged in a different position to the frame plane, then vibrations of the grate bars 11 can also be generated in various preselectable directions. The springs 39 and 41 do not have to be perpendicular to one another.
  • the leaf spring arrangement has the advantage over the design according to FIG. 4 that the energy losses are far less and therefore the power efficiency can be increased. Another advantage is that the leaf springs 39 prevent the grate bars 11 from twisting, so that they make the arrangement of bars 33, 34 according to FIG. 5 unnecessary.
  • phase shift leads to changes in spacing between the grate bars, which lead to the screen elements alternately sagging or being tensioned will. However, it is not possible for adjacent sieve elements to be tensioned at the same time.
  • the time interval between the tensioning of one element with respect to the neighboring element depends on the direction of the force vectors which are pressed onto the individual grate bars by the drives.
  • the drive of the unbalance drives can be independent, individually or in groups.
  • the direction of rotation, the frequency and / or the vibration range or the phase position of the unbalance drives can be set so that the screening device can be easily adjusted to an optimal performance even with changing properties of the screening material.
  • the direction of rotation and the speed of the two unbalance drives located at the ends of the grate bar are the same.
  • a separate drive motor can be provided for each unbalance drive.
  • the mass balance is better the more the speed of the unbalance drives matches. It is therefore advisable to provide a synchronization of the unbalance drives.
  • a toothed belt is preferably used for this.
  • the direction of the force vectors depends on the placement of the weights 24. If the two unbalance drives of a grate bar are considered, the weights 24 can be accommodated in different bores 23 so that the grate bar executes a wobbling movement. In the same way, by inserting the weights 24 into different bores 23, the phase angle between the unbalance drives of adjacent grate bars can be set. Weights with different masses result in different amplitudes.
  • the grate bars can also be provided in sections, with a grate bar arranged immovably on the frame between adjacent sections.
  • the design according to the invention results in a great adaptability of the screening device to the Properties of the screened material and the advantage that no or only a fraction of the mass forces are transferred to the foundation.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
EP86890276A 1985-10-07 1986-10-07 Dispositif de tamisage Withdrawn EP0218575A3 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
AT289285 1985-10-07
AT2892/85 1985-10-07
AT373485 1985-12-23
AT3734/85 1985-12-23
AT696/86 1986-03-17
AT69686 1986-03-17
AT1048/86 1986-04-21
AT104886A AT389062B (de) 1986-04-21 1986-04-21 Siebvorrichtung

Publications (2)

Publication Number Publication Date
EP0218575A2 true EP0218575A2 (fr) 1987-04-15
EP0218575A3 EP0218575A3 (fr) 1988-11-02

Family

ID=27421315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86890276A Withdrawn EP0218575A3 (fr) 1985-10-07 1986-10-07 Dispositif de tamisage

Country Status (2)

Country Link
EP (1) EP0218575A3 (fr)
HU (1) HU197235B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0978327A2 (fr) * 1998-08-03 2000-02-09 Hein, Lehmann Trenn- und Fördertechnik GmbH Appareil à tamiser
CZ298288B6 (cs) * 2004-03-22 2007-08-15 Psp Engineering A. S. Třídicí rošt, zejména zavážecí rošt pro úpravny nerostů
JP2014111236A (ja) * 2012-12-05 2014-06-19 Fuji Xerox Co Ltd 篩分装置
DE102013018873B3 (de) * 2013-11-12 2014-11-27 Schenck Process Gmbh Siebvorrichtung
CN106622955A (zh) * 2016-12-22 2017-05-10 新乡市振英机械设备有限公司 一种方形摇摆筛的筛网固定结构
EP3305423A1 (fr) * 2016-10-05 2018-04-11 HEIN, LEHMANN GmbH Machine à cribler à ondulation linéaire à capacité de transport optimisée
CN110152990A (zh) * 2019-06-13 2019-08-23 东北农业大学 一种仿蚯蚓运动特征的阶梯柔性谷物清选机构
WO2020225091A1 (fr) * 2019-05-06 2020-11-12 Hein, Lehmann Gmbh Machine de criblage à effet trampoline

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206372B (de) * 1964-09-26 1965-12-09 Albert Wehner Siebrost
DE1275339B (de) * 1967-07-13 1968-08-14 Albert Wehner Siebmaschine
DE2424007A1 (de) * 1974-05-17 1975-11-27 Siteg Siebtech Gmbh Siebmaschine
US3971715A (en) * 1973-02-27 1976-07-27 Albert Wehner Device for sieving, sorting, filtering and the like
DE2701341A1 (de) * 1977-01-14 1978-07-20 Fiedler Hans Guenter Siebmaschine zur trennung von siebschwierigen materialien
DE3411719A1 (de) * 1983-04-11 1984-10-11 Binder & Co AG, Gleisdorf, Steiermark Siebvorrichtung
EP0197191A2 (fr) * 1985-04-03 1986-10-15 Carl Schenck Ag Tamis avec panneau de criblage souple

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206372B (de) * 1964-09-26 1965-12-09 Albert Wehner Siebrost
DE1275339B (de) * 1967-07-13 1968-08-14 Albert Wehner Siebmaschine
US3971715A (en) * 1973-02-27 1976-07-27 Albert Wehner Device for sieving, sorting, filtering and the like
DE2424007A1 (de) * 1974-05-17 1975-11-27 Siteg Siebtech Gmbh Siebmaschine
DE2701341A1 (de) * 1977-01-14 1978-07-20 Fiedler Hans Guenter Siebmaschine zur trennung von siebschwierigen materialien
DE3411719A1 (de) * 1983-04-11 1984-10-11 Binder & Co AG, Gleisdorf, Steiermark Siebvorrichtung
EP0197191A2 (fr) * 1985-04-03 1986-10-15 Carl Schenck Ag Tamis avec panneau de criblage souple

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0978327A3 (fr) * 1998-08-03 2001-01-31 Hein, Lehmann Trenn- und Fördertechnik GmbH Appareil à tamiser
EP0978327A2 (fr) * 1998-08-03 2000-02-09 Hein, Lehmann Trenn- und Fördertechnik GmbH Appareil à tamiser
CZ298288B6 (cs) * 2004-03-22 2007-08-15 Psp Engineering A. S. Třídicí rošt, zejména zavážecí rošt pro úpravny nerostů
JP2014111236A (ja) * 2012-12-05 2014-06-19 Fuji Xerox Co Ltd 篩分装置
DE102013018873B3 (de) * 2013-11-12 2014-11-27 Schenck Process Gmbh Siebvorrichtung
WO2015070968A1 (fr) 2013-11-12 2015-05-21 Schenck Process Gmbh Dispositif de tamisage
EP3305423A1 (fr) * 2016-10-05 2018-04-11 HEIN, LEHMANN GmbH Machine à cribler à ondulation linéaire à capacité de transport optimisée
CN106622955A (zh) * 2016-12-22 2017-05-10 新乡市振英机械设备有限公司 一种方形摇摆筛的筛网固定结构
WO2020225091A1 (fr) * 2019-05-06 2020-11-12 Hein, Lehmann Gmbh Machine de criblage à effet trampoline
CN112638550A (zh) * 2019-05-06 2021-04-09 海因莱曼有限公司 弛张式筛分机
US20220048074A1 (en) * 2019-05-06 2022-02-17 Hein, Lehmann Gmbh Flip-flop screening machine
JP2022532000A (ja) * 2019-05-06 2022-07-13 ハイン、レーマン ゲーエムベーハー フリップフロースクリーン機械
US11453033B2 (en) 2019-05-06 2022-09-27 Hein, Lehmann Gmbh Flip-flop screening machine
CN112638550B (zh) * 2019-05-06 2023-09-05 海因莱曼有限公司 弛张式筛分机
CN110152990A (zh) * 2019-06-13 2019-08-23 东北农业大学 一种仿蚯蚓运动特征的阶梯柔性谷物清选机构

Also Published As

Publication number Publication date
EP0218575A3 (fr) 1988-11-02
HU197235B (en) 1989-03-28
HUT45928A (en) 1988-09-28

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