EP2060329B1 - Siebeinrichtung und Befestigungsmittel für Siebbleche - Google Patents

Siebeinrichtung und Befestigungsmittel für Siebbleche Download PDF

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Publication number
EP2060329B1
EP2060329B1 EP07022426A EP07022426A EP2060329B1 EP 2060329 B1 EP2060329 B1 EP 2060329B1 EP 07022426 A EP07022426 A EP 07022426A EP 07022426 A EP07022426 A EP 07022426A EP 2060329 B1 EP2060329 B1 EP 2060329B1
Authority
EP
European Patent Office
Prior art keywords
screen
force
screening
tensioning element
screening device
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.)
Active
Application number
EP07022426A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2060329A1 (de
Inventor
Peter Schiffer
Mario Fritz
Egon Tiefnig
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.)
Individual
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Individual
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 Individual filed Critical Individual
Priority to AT07022426T priority Critical patent/ATE464954T1/de
Priority to DE502007003539T priority patent/DE502007003539D1/de
Priority to ES07022426T priority patent/ES2340723T3/es
Priority to EP07022426A priority patent/EP2060329B1/de
Priority to PCT/EP2008/009718 priority patent/WO2009065544A1/de
Priority to US12/741,949 priority patent/US8387904B2/en
Publication of EP2060329A1 publication Critical patent/EP2060329A1/de
Application granted granted Critical
Publication of EP2060329B1 publication Critical patent/EP2060329B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/145Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18Drum screens
    • B07B1/20Stationary drums with moving interior agitators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/48Stretching devices for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B02C2023/165Screen denying egress of oversize material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B2201/00Details applicable to machines for screening using sieves or gratings
    • B07B2201/02Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining

Definitions

  • the present invention relates to a screening device for a comminution device, through which comminuted components are discharged, and in particular to fastening means for attaching screen plates to screen cassettes.
  • a central element of a conventional crusher is a rotor unit comprising a rotor provided with knives, e.g. B. can be provided with concave ground Rundschneidkronen equipped.
  • the knives are attached, for example, by screwing on knife carriers, which are welded in knife pockets or z. B. can be screwed, which are milled into the rotor.
  • the comminution of the discontinued material takes place between the blades rotating with the rotor and stationary counter-blades (stator measurer, scraper combs).
  • the material is discharged through a sieve device.
  • This screening device determines the comminution factor in accordance with the size of the screen (eg 5 to 150 mm).
  • the shredded material that has passed through the sieve is conveyed by means of a conveyor belt, a transport screw, a chain conveyor or an extraction system, etc.
  • the screening device typically includes screen plates which are bolted at the ends to a portafilter (a screen cassette) or machine housing are. For secure attachment of the screen plates on the portafilter or the housing ia a plurality of screws is necessary.
  • the U.S. -A- 4,824,034 discloses a screen plate for a shredder, which is connectable to cylindrical elements with a screening device.
  • the US Pat. No. 2,225,781 discloses a crusher with rotor and rotor blades and a cylindrical screen.
  • the glands are exposed during operation of the crusher heavy stresses, and thus the bearing surfaces of the screw must be as parallel as possible to prevent loosening or breakage of the fittings and consequently severe damage to the entire shredding device during operation as possible.
  • the parallelism of the contact surfaces of the screw surfaces can only be achieved if the screen cassette and the screen plates are manufactured with very small tolerances. As a result, the production of these components is very expensive.
  • the tightening torques must be strictly adhered to when connecting the screen plates with screws, so that the assembly can be made only by appropriately trained personnel.
  • the above object is achieved by fastening means for fastening a screen plate to a filter holder of a screening device for a crushing device solved according to claim 1.
  • the screening device comprises in particular the portafilter and a number of screen plates.
  • the fastening means comprise a first tensioning element connected to the screening device, in particular the portafilter, and adapted to exert a force on the screen plate; a second tensioning element which is connected to the screening device, in particular the portafilter, is connected, and which is adapted to exert a force on the screen plate; wherein at least one of the clamping elements is an elastic element which is adapted to exert on the screen plate an elastic restoring force.
  • said first clamping element is a mechanical clamping part which is adapted to exert a force parallel to an edge of the screen plate
  • the second clamping element is an elastic element, in particular a spring element which is adapted to an elastic restoring force parallel to the To exert edge of the screen plate in response to the force exerted by the first clamping element force.
  • the clamping element can serve both to clamp the screen plate at one end thereof to the portafilter and to exert a force on this end of the screen plate which is directed substantially in the direction of the opposite end of the screen plate. It can, for. B. a device for receiving the screen plate (a screen cassette) serve as a clamping element.
  • the screen plate is thus fastened without screwing to the portafilter by the forces applied by the first and second tensioning elements.
  • the claimed fasteners are advantageous in that the attachment of the screen plate (sieve) is less susceptible to vibration than in the prior art ie the attachment is more reliable.
  • a fastened with the claimed fasteners screen plate can be easily replaced without much time after wear in the course of operation of the crushing device by a new.
  • an elastic tensioning element which exerts the elastic force for example a spring restoring force
  • Both the first and the second clamping element can exert a compressive force or a tensile force on the screen plate, ie the clamping of the screen plate can be done by pressing on opposite edges or pulling on these.
  • the screen plate is thus set either under tensile or shear stress.
  • the elastic tensioning element may in particular be a spring element or at least comprise such a spring element.
  • the spring element may be a well-known in the art compression spring, a leaf spring, coil spring or a rubber element o. ⁇ . Be.
  • the use of such a spring element for applying the elastic restoring force for clamping fastening the screen plate is inexpensive, practical and allows a reliable attachment of the screen plate to the portafilter.
  • the screening device is i.a. be provided so that it surrounds the rotor of a crushing device partially along the rotor axis.
  • the tension of the screen plate by applying forces by the clamping elements only in the direction along the rotor axis preferably but in a direction perpendicular to the rotor axis, in particular parallel to a narrow side of a rectangular screen plate, take place.
  • the present invention further provides a screening device for a crushing device comprising the above-described attachment means.
  • a screen plate for a screen device for a crushing device comprising a first member adapted to be engaged with a first biasing member of the screen device and comprising a second member is provided thereto is configured to be in engagement with a second clamping element of the screening device, such that the screen plate between the first and the second clamping element can be tensioned, provided.
  • the first and second elements of the screening device may be integrally formed therewith, and both elements may be provided in the form of protrusions, protrusions, grooves, ridges, etc.
  • the present invention further provides a comminution device for comminuting material components comprising at least one rotor with rotor measuring device mounted thereon, at least one stator knife; at least one screening device; and the fasteners described above.
  • the comminution device comprises, in addition to the at least one rotor with rotor knives mounted thereon and the at least one stator knife, at least one screening device which comprises the fastening means described above and / or the screen plate which comprises a first element which is adapted to a first Clamping element of the screening device to be engaged, and which comprises a second element which is adapted to be in engagement with a second clamping element of the screening device, such that the screen plate between the first and the second clamping element can be tensioned.
  • the above object is also achieved by a method for attaching a screen plate to a filter holder of a screening device for a crushing device according to claim 4.
  • the claimed method includes the step of clamping of the screen plate in or on the filter holder between a first and a second clamping element, such that at least one of the clamping elements exerts an elastic restoring force on the screen plate.
  • the tensioning of the screen plate thus happens by means of the elastic restoring force which exerts at least one of the clamping elements.
  • this tension member has a restoring force in response to a force acting thereon, which is then applied to the screen plate.
  • the clamping of the screen plate can be carried out such that by the first clamping element, a force parallel to an edge of the screen plate, for example by abutment of the screen plate on the housing, and exerted by the second clamping element an elastic restoring force parallel to the edge of the screen plate in response is exerted on the force exerted by the first clamping element force.
  • the fin-curvilinear screen plate is clamped in or on the finely curved portafilter so that the force from the first tension element and the force from the second tension element are exerted parallel to the curved surface of the curved screen plate.
  • the filter holder and thus the screening device can thus have a substantially ellipsoidal part shape, for example the shape of a part of a cylinder or cylinder jacket or a ball or a ball shell, and thus have a finite curvature.
  • a force of the first and / or second clamping element along the curvature and senkechtcht act to the longitudinal axis of the partially surrounded by the sieve rotor of a crushing device.
  • FIG. 1 illustrates an example of fastening means for a screen plate, wherein the fastening means comprise a clamping part and a compression spring element.
  • screen plate and “screen” are used interchangeably in this application and the term “screen plate” is intended in particular to express no restriction of the material of the screen.
  • screen cassette and “portafilter” are used interchangeably and the term “screen cassette” is not intended to express any geometric or other limitation on the neutral term of the carrier.
  • a shredder shown in section includes a screen 1 which partially surrounds a rotor 2 (which rotates counterclockwise in the example shown).
  • a stator blade 3 At the upper right end of the screening device 1 is a stator blade 3, which comminuted in cooperation with the mounted on the rotor 2 rotating blades 4 discontinued material.
  • a screen plate 5 of a specific perforation (various shapes, eg a honeycomb shape are possible here) is fastened to a portafilter 6 by means of a clamping part 7 and a compression spring element 8.
  • the screening device may comprise a plurality of screen plates, for example with a sieve size of 5 to 150 mm. It is understood that in various embodiments, a fixed or movable part of the housing can take over the function of the clamping part 7.
  • the clamping member 7 exerts a force F on a projection or a projection 9, which may be formed integrally with the screen plate 5 or otherwise firmly connected thereto.
  • a force F in the peripheral direction (circumferential direction) in the clockwise direction along the screen plate 5 is exerted by the clamping member 7.
  • the size of the force may, depending on the specific application for a particular type of shredder, z. B. by screw adjustment of the clamping part 7, can be adjusted.
  • the screen plate 5 is by the clamping member 7 via a further projection (a projection) 10 of the screen plate against a compression spring element 8, z. B. pressed a cold-formed spring made of stainless steel.
  • a rubber plate may replace the stainless steel compression spring.
  • the spring body can be cylindrical, rectangular, conical, double-conical, barrel-shaped, etc. Spiral flat springs as well as turn and thigh springs can be used.
  • An abutment projection 11 of the screening device 1, e.g. is formed on the screen cassette 6 (the portafilter), the pressure exerted by the clamping part 7 and transmitted from the compression spring element 8 force F increases.
  • the screen plate is thus stretched with finite curvature. It can be easily solved by operating the clamping part 7.
  • the attachment of the screen plate against vibration and similar stress during operation by the provision of the compression spring is relatively insensitive.
  • the fastening means according to the invention for fastening screen plates to screen cassettes can advantageously be used both in single-shaft and multi-shaft shredders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Screen Printers (AREA)
  • Catching Or Destruction (AREA)
  • Paper (AREA)
  • Crushing And Grinding (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP07022426A 2007-11-19 2007-11-19 Siebeinrichtung und Befestigungsmittel für Siebbleche Active EP2060329B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT07022426T ATE464954T1 (de) 2007-11-19 2007-11-19 Siebeinrichtung und befestigungsmittel für siebbleche
DE502007003539T DE502007003539D1 (de) 2007-11-19 2007-11-19 Siebeinrichtung und Befestigungsmittel für Siebbleche
ES07022426T ES2340723T3 (es) 2007-11-19 2007-11-19 Dispositivo de tamizado y medios de sujeccion para placas de tamiz.
EP07022426A EP2060329B1 (de) 2007-11-19 2007-11-19 Siebeinrichtung und Befestigungsmittel für Siebbleche
PCT/EP2008/009718 WO2009065544A1 (de) 2007-11-19 2008-11-17 Siebeinrichtung und befestigungsmittel für siebbleche
US12/741,949 US8387904B2 (en) 2007-11-19 2008-11-17 Screen device and fastening means for screen plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07022426A EP2060329B1 (de) 2007-11-19 2007-11-19 Siebeinrichtung und Befestigungsmittel für Siebbleche

Publications (2)

Publication Number Publication Date
EP2060329A1 EP2060329A1 (de) 2009-05-20
EP2060329B1 true EP2060329B1 (de) 2010-04-21

Family

ID=39279268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07022426A Active EP2060329B1 (de) 2007-11-19 2007-11-19 Siebeinrichtung und Befestigungsmittel für Siebbleche

Country Status (6)

Country Link
US (1) US8387904B2 (es)
EP (1) EP2060329B1 (es)
AT (1) ATE464954T1 (es)
DE (1) DE502007003539D1 (es)
ES (1) ES2340723T3 (es)
WO (1) WO2009065544A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103977955B (zh) * 2014-06-04 2016-08-24 徐州徐工施维英机械有限公司 一种筛网拉紧调节装置及筛分装置
CN115007297B (zh) * 2022-06-24 2023-07-18 内蒙古民族大学 一种负压贴合式蒙药用药材回旋处理装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2225781A (en) * 1939-08-26 1940-12-24 Hinerfeld Irving Flock cutting machine
US4318512A (en) * 1978-10-26 1982-03-09 Jacobson Machine Works, Inc. Quick action screen latching apparatus for hammermill
US4824034A (en) * 1987-11-23 1989-04-25 Baker Herbert R Apparatus and method for chipping and/or shredding branches and the like
DE4100080A1 (de) * 1991-01-04 1992-07-09 Karl Merz Maschinenfabrik Gmbh Mahl- und separiergeraet
US5605291A (en) * 1994-04-28 1997-02-25 Doskocil; David Chipper/mulcher
US5485924A (en) * 1994-05-09 1996-01-23 Sweco, Incorporated Centrifugal sifter and elements thereof

Also Published As

Publication number Publication date
ATE464954T1 (de) 2010-05-15
ES2340723T3 (es) 2010-06-08
EP2060329A1 (de) 2009-05-20
US8387904B2 (en) 2013-03-05
DE502007003539D1 (de) 2010-06-02
US20110186665A1 (en) 2011-08-04
WO2009065544A1 (de) 2009-05-28

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