EP0419033A1 - Improvements relating to vibratory sifters - Google Patents

Improvements relating to vibratory sifters Download PDF

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Publication number
EP0419033A1
EP0419033A1 EP90309017A EP90309017A EP0419033A1 EP 0419033 A1 EP0419033 A1 EP 0419033A1 EP 90309017 A EP90309017 A EP 90309017A EP 90309017 A EP90309017 A EP 90309017A EP 0419033 A1 EP0419033 A1 EP 0419033A1
Authority
EP
European Patent Office
Prior art keywords
screen
sifter
mesh
aperture
tensioning frame
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.)
Granted
Application number
EP90309017A
Other languages
German (de)
French (fr)
Other versions
EP0419033B1 (en
Inventor
Peter Emmett
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.)
WILLIAM BOULTON VIBRO ENERGY Ltd
Original Assignee
WILLIAM BOULTON VIBRO ENERGY Ltd
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 WILLIAM BOULTON VIBRO ENERGY Ltd filed Critical WILLIAM BOULTON VIBRO ENERGY Ltd
Publication of EP0419033A1 publication Critical patent/EP0419033A1/en
Application granted granted Critical
Publication of EP0419033B1 publication Critical patent/EP0419033B1/en
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
    • B07B1/06—Cone or disc shaped 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
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/38—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens oscillating in a circular arc in their own plane; Plansifters
    • 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
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/14—Details or accessories
    • B07B13/16—Feed or discharge arrangements

Definitions

  • This invention relates to vibratory sifters, the term "sifters” being used in a broad sense to include the various sieves, screens and the like by which the materials can be screened, graded or separated.
  • the term "materials” is intended to describe solids, liquids, items or any other substances to be separated by size.
  • material to be separated is supplied to the top of a vibrating screen, oversize material being retained on the top of the screen while undersized material passes through the screen. Oversized material is removed from the periphery of the screen, normally by way of an opening in a peripheral wall surrounding the screen.
  • a sifter comprising a resiliently supported screen, means for subjecting the screen to a vibratory movement, means for collecting undersized material passing through the screen and an aperture through the screen adjacent to and inside its periphery through which oversized materials from the top of the screen are dischargeable.
  • the apparatus comprises a plurality of vertically spaced screens each having a discharge aperture for oversize particles adjacent to and inside its periphery.
  • the vibratory movement is created by vibrator means situated below the screen(s) and acting to create a three dimensional motion of rotational character having upward and downward components in the movement.
  • a discharge chute for oversize material is located beneath the or each aperture, directing oversize material away from the centre of the machine.
  • the collecting means for undersize material has an inclined base and a discharge at the periphery of the sifter.
  • the screen comprises a mesh supported by a peripheral tensioning frame.
  • the mesh is bonded to the tensioning frame. Alternatively it may be clamped or otherwise fixed to the frame.
  • the oversize material outlet is located entirely below the level of the mesh of the screen.
  • a screen for a vibratory sifter comprising a peripheral tensioning frame supporting a mesh which has an aperture for oversize material adjacent to and inside the tensioning frame.
  • the mesh is bonded to the tensioning frame.
  • the mesh and tensioning frame have a circular periphery.
  • a vibratory sifter comprises a cylindrical base support 10 on which is supported by an annular series of compression springs 12 a vibratory assembly comprising a cylinderical sifter chamber 14 in which is mounted a sifter screen 16 above a collecting pan 18 for undersize material passing through the screen, the pan 18 having a peripheral discharge chute 20 extending through the side wall of the chamber 14.
  • the chamber 14 extends upwardly from a base member 22 having a central mounting ring 24.
  • An electric vibrator motor 26 is supported by and below the ring 24.
  • the motor shaft projects above and below the motor casing and is fitted with relatively angularly adjustable eccentric weights 28, 30.
  • Fig. 1 shows a perspective view of a circular screen.
  • the screen comprises a circular peripheral tensioning frame 30 having a mesh 32 bonded, clamped or otherwise fixed to it.
  • a mesh 32 bonded, clamped or otherwise fixed to it.
  • Fig. 3 and 3A show that discharge chute 38 for over­size material is located below the aperture 34. and that the screen is replaceable, for example, for cleaning purposes, by removably attaching in the chamber 14 between an upper section 14A and a lower section 14B, the sections being clamped together by any suitable means.
  • a multiple progressive sifting operation can be achieved by fitting one above the other in the sifting chamber 14, a plurality of screens, the mesh size of which decreases progressively downwards, each screen having fitted therebelow a discharge chute 38 for over size material, each leading to a separate collecting means, the undersize material falling through an upper screen to the next below screen where it is subject to a further sifting operation, the lowermost screen being provided with a collecting pan 18 and discharge chute 20, for undersize materials passing through the lowermost screen.
  • the compression springs 12 on which the vibrating chamber is mounted may be replaced by rubber bushes or any other resilient assemblies.
  • Alternative vibrating means may be provided so long as they impart to materials on the screen a movement causing undersize material to pass through the screen and oversized material to pass to the edge of the screen.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

A sifter comprises a screen (10) mounted for vibratory movement in three dimensions having a rotational component and upward and downward components, the screen having means (18) for collecting undersized particles therebelow and a discharge aperture (34) formed therethrough at its peripherly for oversized particles.

Description

  • This invention relates to vibratory sifters, the term "sifters" being used in a broad sense to include the various sieves, screens and the like by which the materials can be screened, graded or separated. The term "materials" is intended to describe solids, liquids, items or any other substances to be separated by size.
  • In certain current vibratory sifters, material to be separated is supplied to the top of a vibrating screen, oversize material being retained on the top of the screen while undersized material passes through the screen. Oversized material is removed from the periphery of the screen, normally by way of an opening in a peripheral wall surrounding the screen.
  • Arrangements of this nature have been disadvantageous in that oversize material often tends to accumulate on the peripheral wall especially around the discharge aperture, thereby reducing its efficient discharge.
  • It is an object of the present invention to obviate or mitigate this disadvantage.
  • According to the present invention there is provided a sifter comprising a resiliently supported screen, means for subjecting the screen to a vibratory movement, means for collecting undersized material passing through the screen and an aperture through the screen adjacent to and inside its periphery through which oversized materials from the top of the screen are dischargeable.
  • Preferably the apparatus comprises a plurality of vertically spaced screens each having a discharge aperture for oversize particles adjacent to and inside its periphery.
  • Preferably the vibratory movement is created by vibrator means situated below the screen(s) and acting to create a three dimensional motion of rotational character having upward and downward components in the movement.
  • Preferably a discharge chute for oversize material is located beneath the or each aperture, directing oversize material away from the centre of the machine.
  • Preferably the collecting means for undersize material has an inclined base and a discharge at the periphery of the sifter.
  • Preferably the screen comprises a mesh supported by a peripheral tensioning frame. Preferably the mesh is bonded to the tensioning frame. Alternatively it may be clamped or otherwise fixed to the frame.
  • Preferably the oversize material outlet is located entirely below the level of the mesh of the screen.
  • Further according to the present invention there is provided a screen for a vibratory sifter, the screen comprising a peripheral tensioning frame supporting a mesh which has an aperture for oversize material adjacent to and inside the tensioning frame.
  • Preferably the mesh is bonded to the tensioning frame.
  • Preferably the mesh and tensioning frame have a circular periphery.
  • An embodiment of the present invention will now be described by way of example only with reference to the accompanying drawings in which:-
    • Fig. 1 shows a perspective view of a separating screen for a sifter,
    • Fig. 2 shows a plan of a sifter,
    • Fig. 3 shows a sectional elevation on the lines A B of a sifter, and
    • Fig. 3A shows an enlarged sectional elevation of part of the sifter.
  • A vibratory sifter comprises a cylindrical base support 10 on which is supported by an annular series of compression springs 12 a vibratory assembly comprising a cylinderical sifter chamber 14 in which is mounted a sifter screen 16 above a collecting pan 18 for undersize material passing through the screen, the pan 18 having a peripheral discharge chute 20 extending through the side wall of the chamber 14. The chamber 14 extends upwardly from a base member 22 having a central mounting ring 24. An electric vibrator motor 26 is supported by and below the ring 24. The motor shaft projects above and below the motor casing and is fitted with relatively angularly adjustable eccentric weights 28, 30. Due to the provision of these weights and to the resilient mounting of the sifting chamber 14, rotation of the motor imparts to the chamber a vibro-gyratory action in the form of a high frequency rotary oscillation about the central axis of the motor and chamber with an upward and downward component of movement. This causes vibration of the material on the screen with an outwardly spiral motion. Under size particles fall through the screen to be collected in the collecting pan 18 and discharged by way of the chute 20, whereas oversized particles remain on top of the screen and move towards its periphery.
  • Fig. 1 shows a perspective view of a circular screen. The screen comprises a circular peripheral tensioning frame 30 having a mesh 32 bonded, clamped or otherwise fixed to it. Within the outer periphery of the frame 30 there is provided in the screen an aperture 34 which is reinforced by an arcuate member 36 welded or otherwise attached to the frame 30. Oversized particles at the periphery of the screen fall through the aperture 34 and it will be realised that, unlike earlier vibratory sifters of this nature where oversize material is discharged over the edge of the screen 30, oversize material discharges effectively through the screen.
  • Fig. 3 and 3A show that discharge chute 38 for over­size material is located below the aperture 34. and that the screen is replaceable, for example, for cleaning purposes, by removably attaching in the chamber 14 between an upper section 14A and a lower section 14B, the sections being clamped together by any suitable means.
  • Various modifications can be made without departing from the scope of the invention. For example, a multiple progressive sifting operation can be achieved by fitting one above the other in the sifting chamber 14, a plurality of screens, the mesh size of which decreases progressively downwards, each screen having fitted therebelow a discharge chute 38 for over size material, each leading to a separate collecting means, the undersize material falling through an upper screen to the next below screen where it is subject to a further sifting operation, the lowermost screen being provided with a collecting pan 18 and discharge chute 20, for undersize materials passing through the lowermost screen.
  • Various other modifications can be made without departing from the scope of the invention. For example, the compression springs 12 on which the vibrating chamber is mounted may be replaced by rubber bushes or any other resilient assemblies.
  • Alternative vibrating means may be provided so long as they impart to materials on the screen a movement causing undersize material to pass through the screen and oversized material to pass to the edge of the screen.

Claims (9)

1. A sifter comprising a resiliently supported screen (10), means (12,24,26,28,30) for subjecting the screen to a vibratory movement, means (18) for collecting undersized material passing through the screen characterised in that an aperture (34) is provided through the screen adjacent to and inside its periphery through which oversized materials from the top of the screen are dischargeable.
2. A sifter as claimed in claim 1, characterised in that there is provided a plurality of vertically spaced screens (10) each having a discharge aperture (34) for oversized particles adjacent to and inside its periphery.
3. A sifter as claimed in claim 1 or claim 2, characterised in that the vibratory movement is created by vibrator means (26,28,30) situated below the screeen(s) (10) and acting to create a three dimensional motion of rotational character having upward and downward components in the movement.
4. A sifter as claimed in any one of claims 1 to 3, characterised in that a discharge chute (38) for oversized material is located beneath the or each aperture (34), directing overside material away from the centre of the machine.
5. A sifter as claimed in any one of claims 1 to 4, characterised in that the collecting means (18) for undersize material has an inclined base and a discharge (20) at the periphery of the sifter.
6. A sifter as claimed in any one of the preceding claims, characterised in that the screen (10) comprises a mesh (32) supported by a peripheral tensioning frame (30).
7. A sifter as claimed in claim 6, characterised in that the mesh (32) is bonded, clamped or otherwise fixed to the tensioning frame.
8. A sifter as claimed in any one of the preceding claims, characterised in that the oversize material outlet (38) is located entirely below the level of the mesh (32) of the screen (10).
9. A screen for a vibratory sifter, the screen comprising a peripheral tensioning frame supporting a mesh which has an aperture for oversize material adjacent to and inside the tensioning frame.
EP90309017A 1989-09-19 1990-08-16 Improvements relating to vibratory sifters Expired - Lifetime EP0419033B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898921151A GB8921151D0 (en) 1989-09-19 1989-09-19 Improvements relating to vibratory sifters
GB8921151 1989-09-19

Publications (2)

Publication Number Publication Date
EP0419033A1 true EP0419033A1 (en) 1991-03-27
EP0419033B1 EP0419033B1 (en) 1994-06-15

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EP90309017A Expired - Lifetime EP0419033B1 (en) 1989-09-19 1990-08-16 Improvements relating to vibratory sifters

Country Status (3)

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EP (1) EP0419033B1 (en)
DE (1) DE69009920T2 (en)
GB (1) GB8921151D0 (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9312733U1 (en) * 1993-08-25 1993-10-14 Allgaier-Werke KG, 73066 Uhingen Vibration tumbler machine
EP0943374A2 (en) * 1998-03-18 1999-09-22 Gerald Kainz Wobbling screen
US6672459B1 (en) * 2001-04-04 2004-01-06 Southwestern Wire Cloth, Inc. Integrated terminal deck and spout for vibrating separator and method of fabrication
KR20040017893A (en) * 2002-08-22 2004-03-02 금호엔지니어링(주) Feed pipe Setting Oscillation Separate Mechanism
FR2855989A1 (en) * 2003-06-16 2004-12-17 Gantois Ets Sieve comprises body with mount and separation unit where filter element is pre- stretched and tensioned by elements associated with separation unit not mount
EP1923146A2 (en) * 2006-11-14 2008-05-21 Cuccolini S.r.L. Screening apparatus
FR2980981A1 (en) * 2011-10-06 2013-04-12 Sodeva Tds Sieve for perfect separation of powder particles or liquids in industry, has evacuation chute integrated into support frame of sieve for evacuation of particles whose size is greater than vacuum mesh
CN104174584A (en) * 2014-08-29 2014-12-03 安徽海螺川崎节能设备制造有限公司 Vibration screen structure
CN104525472A (en) * 2014-11-24 2015-04-22 东莞市青麦田数码科技有限公司 Powdered graphite screening machine
CN104550013A (en) * 2015-01-23 2015-04-29 中国核动力研究设计院 Rotary-vibrating and sieving device of nuclear fuel UO2 microspheres
CN105921400A (en) * 2016-06-03 2016-09-07 成都格瑞思文化传播有限公司 Construction vibrating screen
CN107542026A (en) * 2017-10-25 2018-01-05 江苏云端重工科技有限公司 A kind of old asphalt mixture drying device recovery sub-sieve mechanism
CN107604793A (en) * 2017-10-25 2018-01-19 江苏云端重工科技有限公司 A kind of drying device for old asphalt mixture recovery
CN108114894A (en) * 2017-12-28 2018-06-05 新乡市振英机械设备有限公司 A kind of ultrasonic activation sieves clamp device
CN108273736A (en) * 2018-04-20 2018-07-13 重庆市南川区王小平机械制造有限公司 Circular shale shaker extension set
CN108580263A (en) * 2018-05-16 2018-09-28 福建省复新农业科技发展有限公司 A kind of antifouling type soya bean screening plant
CN108592722A (en) * 2018-04-11 2018-09-28 贵州贵安新联爆破工程有限公司 A kind of efficient hole Blasting In Open-pit Mines filling apparatus for work
CN110225799A (en) * 2017-10-25 2019-09-10 藤野工业株式会社 Vibrating scalper
CN110337925A (en) * 2019-07-18 2019-10-18 安徽润航农业科技开发有限公司 A kind of middle mountain China fir Chinese celery snakeheaded fish stereo ecological symbiotic cultivation method
CN110773415A (en) * 2019-10-24 2020-02-11 西安寒武纪石油科技有限公司 Production process of well cementation ceramic hollow microspheres
CN110787991A (en) * 2019-11-07 2020-02-14 含山县官塘石壁茶厂 High-efficient separator of leaf powder for tea processing
CN111014020A (en) * 2019-11-25 2020-04-17 大同新成新材料股份有限公司 Screening machine for semiconductor production and screening method thereof
CN111111870A (en) * 2019-12-03 2020-05-08 华侨大学 Bypass type cement silo discharge pipeline crusher
CN112718478A (en) * 2020-12-29 2021-04-30 重庆聚钡混凝土有限公司 Multi-layer screen vibrating machine
WO2021118687A1 (en) * 2019-12-10 2021-06-17 Schlumberger Technology Corporation Vibratory separator with a sloped ramp

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CN104525474A (en) * 2014-12-25 2015-04-22 无锡智数商务信息咨询有限公司 Screening device for fluidized bed dryer
CN112139026A (en) * 2020-08-19 2020-12-29 淮矿生态农业有限责任公司 High-quality rice screening mechanism with dust removal function
CN112570271B (en) * 2020-12-01 2022-05-17 杨旭方 Electronic component quality detection screening device
CN115350789B (en) * 2022-07-27 2023-06-02 威海市东旭西洋参有限公司 Crushing device and method for processing ginseng refined imperial tea
CN116786414B (en) * 2023-08-29 2023-11-07 绿健园（新乡）生物工程有限公司 Automatic material-separating vibrating screen and screening process

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US4276158A (en) * 1979-05-15 1981-06-30 Buhler-Miag Gmbh Screen for a screening machine
US4315817A (en) * 1978-06-05 1982-02-16 Popper Engineering Ltd. Vibrating surface apparatus
GB2085760A (en) * 1980-10-24 1982-05-06 Midwestern Ind Inc Screening apparatus
US4563268A (en) * 1984-10-09 1986-01-07 Polysar Financial Services S.A. Method of discharging particles from a vibrating filter screen
GB2182866A (en) * 1985-10-04 1987-05-28 Endecotts Limited Sieve shaker

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US4315817A (en) * 1978-06-05 1982-02-16 Popper Engineering Ltd. Vibrating surface apparatus
US4276158A (en) * 1979-05-15 1981-06-30 Buhler-Miag Gmbh Screen for a screening machine
GB2085760A (en) * 1980-10-24 1982-05-06 Midwestern Ind Inc Screening apparatus
US4563268A (en) * 1984-10-09 1986-01-07 Polysar Financial Services S.A. Method of discharging particles from a vibrating filter screen
GB2182866A (en) * 1985-10-04 1987-05-28 Endecotts Limited Sieve shaker

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9312733U1 (en) * 1993-08-25 1993-10-14 Allgaier-Werke KG, 73066 Uhingen Vibration tumbler machine
EP0943374A2 (en) * 1998-03-18 1999-09-22 Gerald Kainz Wobbling screen
DE19811746A1 (en) * 1998-03-18 1999-09-23 Gerald Kainz Tumbler screening machine
EP0943374A3 (en) * 1998-03-18 2000-05-24 Gerald Kainz Wobbling screen
DE19811746C2 (en) * 1998-03-18 2000-07-13 Gerald Kainz Tumbler screening machine
US6672459B1 (en) * 2001-04-04 2004-01-06 Southwestern Wire Cloth, Inc. Integrated terminal deck and spout for vibrating separator and method of fabrication
KR20040017893A (en) * 2002-08-22 2004-03-02 금호엔지니어링(주) Feed pipe Setting Oscillation Separate Mechanism
FR2855989A1 (en) * 2003-06-16 2004-12-17 Gantois Ets Sieve comprises body with mount and separation unit where filter element is pre- stretched and tensioned by elements associated with separation unit not mount
EP1923146A2 (en) * 2006-11-14 2008-05-21 Cuccolini S.r.L. Screening apparatus
EP1923146A3 (en) * 2006-11-14 2012-08-15 Cuccolini S.r.L. Screening apparatus
FR2980981A1 (en) * 2011-10-06 2013-04-12 Sodeva Tds Sieve for perfect separation of powder particles or liquids in industry, has evacuation chute integrated into support frame of sieve for evacuation of particles whose size is greater than vacuum mesh
CN104174584A (en) * 2014-08-29 2014-12-03 安徽海螺川崎节能设备制造有限公司 Vibration screen structure
CN104525472A (en) * 2014-11-24 2015-04-22 东莞市青麦田数码科技有限公司 Powdered graphite screening machine
CN104550013A (en) * 2015-01-23 2015-04-29 中国核动力研究设计院 Rotary-vibrating and sieving device of nuclear fuel UO2 microspheres
CN105921400A (en) * 2016-06-03 2016-09-07 成都格瑞思文化传播有限公司 Construction vibrating screen
CN107542026A (en) * 2017-10-25 2018-01-05 江苏云端重工科技有限公司 A kind of old asphalt mixture drying device recovery sub-sieve mechanism
CN107604793A (en) * 2017-10-25 2018-01-19 江苏云端重工科技有限公司 A kind of drying device for old asphalt mixture recovery
EP3549683A4 (en) * 2017-10-25 2020-08-12 Fujino Industries Co., Ltd. Vibrating sieve machine
CN110225799A (en) * 2017-10-25 2019-09-10 藤野工业株式会社 Vibrating scalper
US11130156B2 (en) * 2017-10-25 2021-09-28 Fujino Industries Co., Ltd. Vibrating sieve machine
CN108114894A (en) * 2017-12-28 2018-06-05 新乡市振英机械设备有限公司 A kind of ultrasonic activation sieves clamp device
CN108592722B (en) * 2018-04-11 2024-03-12 贵州贵安新联爆破工程有限公司 Efficient open-air deep hole blasting fills operation device
CN108592722A (en) * 2018-04-11 2018-09-28 贵州贵安新联爆破工程有限公司 A kind of efficient hole Blasting In Open-pit Mines filling apparatus for work
CN108273736A (en) * 2018-04-20 2018-07-13 重庆市南川区王小平机械制造有限公司 Circular shale shaker extension set
CN108273736B (en) * 2018-04-20 2020-05-05 重庆市南川区王小平机械制造有限公司 Circular vibration screening machine
CN108580263A (en) * 2018-05-16 2018-09-28 福建省复新农业科技发展有限公司 A kind of antifouling type soya bean screening plant
CN110337925B (en) * 2019-07-18 2021-03-23 安徽润航农业科技开发有限公司 Three-dimensional ecological symbiotic culture method for Sequoia tsugae, cress and snakehead
CN110337925A (en) * 2019-07-18 2019-10-18 安徽润航农业科技开发有限公司 A kind of middle mountain China fir Chinese celery snakeheaded fish stereo ecological symbiotic cultivation method
CN110773415A (en) * 2019-10-24 2020-02-11 西安寒武纪石油科技有限公司 Production process of well cementation ceramic hollow microspheres
CN110787991A (en) * 2019-11-07 2020-02-14 含山县官塘石壁茶厂 High-efficient separator of leaf powder for tea processing
CN111014020B (en) * 2019-11-25 2021-09-21 大同新成新材料股份有限公司 Screening machine for semiconductor production and screening method thereof
CN111014020A (en) * 2019-11-25 2020-04-17 大同新成新材料股份有限公司 Screening machine for semiconductor production and screening method thereof
CN111111870A (en) * 2019-12-03 2020-05-08 华侨大学 Bypass type cement silo discharge pipeline crusher
WO2021118687A1 (en) * 2019-12-10 2021-06-17 Schlumberger Technology Corporation Vibratory separator with a sloped ramp
US11167316B2 (en) 2019-12-10 2021-11-09 Schlumberger Technology Corporation Vibratory separator with a sloped ramp
CN114929402A (en) * 2019-12-10 2022-08-19 斯伦贝谢技术有限公司 Vibratory separator with inclined ramp
CN112718478B (en) * 2020-12-29 2022-04-12 重庆聚钡混凝土有限公司 Multi-layer screen vibrating machine
CN112718478A (en) * 2020-12-29 2021-04-30 重庆聚钡混凝土有限公司 Multi-layer screen vibrating machine

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DE69009920D1 (en) 1994-07-21
GB8921151D0 (en) 1989-11-08
EP0419033B1 (en) 1994-06-15
DE69009920T2 (en) 1994-11-10

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