EP0251349A1 - Sieb mit wenigstens einer runden drehbaren Siebfläche und wenigstens einer auf der Materialzufuhrseite eingebrachten Spirale - Google Patents

Sieb mit wenigstens einer runden drehbaren Siebfläche und wenigstens einer auf der Materialzufuhrseite eingebrachten Spirale Download PDF

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Publication number
EP0251349A1
EP0251349A1 EP87200839A EP87200839A EP0251349A1 EP 0251349 A1 EP0251349 A1 EP 0251349A1 EP 87200839 A EP87200839 A EP 87200839A EP 87200839 A EP87200839 A EP 87200839A EP 0251349 A1 EP0251349 A1 EP 0251349A1
Authority
EP
European Patent Office
Prior art keywords
spiral
sieve
carrier
sieve surface
guide position
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
EP87200839A
Other languages
English (en)
French (fr)
Other versions
EP0251349B1 (de
Inventor
Landbouwbank Mepp Cooperatieve
A Wijnveen B V Machinefabriek
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.)
Machinefabriek A Wijnveen BV
Original Assignee
MEPPEL B A COOP LANDBOUWBANK
Machinefabriek A Wijnveen BV
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 MEPPEL B A COOP LANDBOUWBANK, Machinefabriek A Wijnveen BV filed Critical MEPPEL B A COOP LANDBOUWBANK
Publication of EP0251349A1 publication Critical patent/EP0251349A1/de
Application granted granted Critical
Publication of EP0251349B1 publication Critical patent/EP0251349B1/de
Expired 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
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/52—Cleaning with brushes or scrapers
    • B07B1/526—Cleaning with brushes or scrapers with scrapers
    • 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
    • B07B1/08—Screens rotating within their own plane

Definitions

  • Sieve device comprising at least on rotating round perforated sieve surface on which at least one spiral has been mounted at the material supply side.
  • the invention relates to a sieve device comprising at least on rotating round perforated sieve surface on which at least one spiral has been mounted at the material supply side.
  • a device of this type is known from FR-A-352.227.In this device a number of spiral shaped bristles have been mounted pressing both against the upper side and against the lower side of the flat sieve surface.Of these spiral bristles the upper ones at the one hand serve simultaneously for the uniform distribution of the material to be sieved and at the other hand for removing the sieved off component spiral shaped outwardly to the outer circumference. The lower spiral bristles serve for cleaning the perforations.
  • This structure has a limited sieve capacity,because at the one hand the lower cleaning bristles block continously a not inconsiderable part of the perforations.At the other hand both the upper and the lower bristles,that are in continuous contact with the sieve surfaces,cause a considerable resistance against rotation of the sieve,because of which the energy consumption per unit of weight of the material to be sie
  • the object of the invention is overcoming these objectios and providing a sieve device of the type mentioned in the preamble which has per unit of weighth of the material to be sieved a low energy consumption and a high capacity per unit of time.
  • the material to be sieved is guided by the contact surface,that does not contact the sieve surface but the material present on top thereof,along a spiral shaped course over the sieve surface through which a large capacity per unit of time accompanied by a good sieve action is reached.
  • a preferential embodiment of the invention in which the spiral is suspended from a carrier with a star shaped spider,that is concentric with the axis of rotation of the sieve surface, is characterized in that the carrier consists of an inner ring and an outer ring,between which the the star shaped spider is mounted,which carrier is movably fastened to the fixed frame of the sieve device between the guide position and the cleaning position.
  • the sieve device shown in the drawing comprises a body 1 having a fixed lid 2,in which body 1 a substantially flat round sieve surface 3 rotates around a substantially vertical shaft 4,driven by(not shown)drive means.
  • the siev surface 3 is fastened in side a round edge profile 5 having a T shaped cross section,whereas in the middle a substantially cone shaped imperforate,closed distributor 6 is mounted for the uniform distribution of the material to be sieved over the circumference of the sieve surface 3 ,which material is supplied in a vertically downward direction that is indicated by the arrows M.
  • the distributor cone 6 rests below the sieve surface 3 on a support cylinder 8 having a round bottom plate 9 and an internal reinforcement ring 10.
  • a spiral 11 is suspended below the lid 2.
  • This spiral 11 is vertiacally movable between a guide position,in which it is placed at a hort distance above the rotating sieve surface and does not contact this surface itself but indeed the material to be sieved that is lying on top thereof,and a not shown cleaning position,in which the lower contact surface 12 of the spiral 11 contacts the sieve surface 3 and cleans the openings thereof from the material M to be sieved.
  • the spiral 11 with its turns 17 is suspended from a spider 13,that is formed by an inner ring 14 and an outer ring 15 between which extend a number of arms 16(in the drawing a number of 8)substantially horizontal.
  • This spider 13 it self is suspended vertically movable over a short distance on the in plan vieuw cross shaped lid 2 of the sieve device.
  • This suspension is formed at the one hand near the vertical shaft 4 by a number of pivoted stabilizing arms 18,which are each pivotly connected at the lower end with one of the arms 19 of the cross shaped lid 2.
  • These stabilising arms 18 make an acute angle A with the tangent at that location on the base circle of the cone shaped distributor 6.
  • engagement points for a number of two armed levers 20 have been arranged near the outer circumference of the outer ring 15 of the spider 13,said two armed levers 20 each being pivotable around a pivot pin 21.
  • the other end of the two armed levers 20 is pivotally connected with the lower end of the piston rod 22 of
  • the contact surface 12 of the spiral consists of bristle band (not shown)that is exchangeable mounted to the lower side of the spiral,such that it can be exchanged fast and easily after wearing down without the necessity of closing down the complete sieve device for a longer period.
  • the contact surface 12 of the spiral 11 consists of a rigid or somewhat flexible band of synthetic material,which is also mounted fast and easily exchangeable.
  • auxiliary lids 25 have been mounted in addition to the cross shaped lid 2, that is affixed to the outer circumference of the cylindrical housing 1 of the sieve device, which auxiliary lids .25 can be easily removed to gain access to the spiral 11 and the sieve surface 3 and be replaced to close these off again.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
EP19870200839 1986-05-26 1987-05-07 Sieb mit wenigstens einer runden drehbaren Siebfläche und wenigstens einer auf der Materialzufuhrseite eingebrachten Spirale Expired EP0251349B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8601335 1986-05-26
NL8601335A NL8601335A (nl) 1986-05-26 1986-05-26 Zeefinrichting voorzien van tenminste een rond zeefoppervlak waarop tenminste een spiraal is aangebracht.

Publications (2)

Publication Number Publication Date
EP0251349A1 true EP0251349A1 (de) 1988-01-07
EP0251349B1 EP0251349B1 (de) 1989-10-04

Family

ID=19848066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870200839 Expired EP0251349B1 (de) 1986-05-26 1987-05-07 Sieb mit wenigstens einer runden drehbaren Siebfläche und wenigstens einer auf der Materialzufuhrseite eingebrachten Spirale

Country Status (4)

Country Link
EP (1) EP0251349B1 (de)
DE (1) DE3760651D1 (de)
ES (1) ES2010700B3 (de)
NL (1) NL8601335A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008037672A1 (de) * 2006-09-25 2008-04-03 Basf Se Verfahren zum klassieren wasserabsorbierender polymerpartikel
US20180311109A1 (en) * 2015-09-07 2018-11-01 Pharma Technology Sa Device for separating particle fragments from said particles

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE239907C (de) *
DE71863C (de) * Ph. TAFEL in Augsburg Flachsichter mit im Kreise schwingender und gleichzeitig kreisender Bewegung
FR352227A (fr) * 1905-03-09 1905-08-05 Societe G. Et A. Cusson Freres Et Cie Plansichter
FR43942E (fr) * 1933-06-12 1934-09-19 Fond Et Ateliers De Constructi Tamis
DE729869C (de) * 1939-02-09 1943-01-04 Miag Muehlenbau Und Ind Ag Rundsiebmaschine fuer Koernerfruechte
NL7605572A (nl) * 1976-05-24 1977-11-28 Coop Landbouw Aan Verkoop Zeefinrichting voor het scheiden van een mengsel van een grove en een fijne component.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE239907C (de) *
DE71863C (de) * Ph. TAFEL in Augsburg Flachsichter mit im Kreise schwingender und gleichzeitig kreisender Bewegung
FR352227A (fr) * 1905-03-09 1905-08-05 Societe G. Et A. Cusson Freres Et Cie Plansichter
FR43942E (fr) * 1933-06-12 1934-09-19 Fond Et Ateliers De Constructi Tamis
DE729869C (de) * 1939-02-09 1943-01-04 Miag Muehlenbau Und Ind Ag Rundsiebmaschine fuer Koernerfruechte
NL7605572A (nl) * 1976-05-24 1977-11-28 Coop Landbouw Aan Verkoop Zeefinrichting voor het scheiden van een mengsel van een grove en een fijne component.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008037672A1 (de) * 2006-09-25 2008-04-03 Basf Se Verfahren zum klassieren wasserabsorbierender polymerpartikel
US9751110B2 (en) 2006-09-25 2017-09-05 Basf Aktiengesellschaft Method for the classification of water absorbent polymer particles
US20180311109A1 (en) * 2015-09-07 2018-11-01 Pharma Technology Sa Device for separating particle fragments from said particles
US10568812B2 (en) * 2015-09-07 2020-02-25 Pharma Technology Sa Device for separating particle fragments from said particles

Also Published As

Publication number Publication date
EP0251349B1 (de) 1989-10-04
DE3760651D1 (en) 1989-11-09
ES2010700B3 (es) 1989-12-01
NL8601335A (nl) 1987-12-16

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