EP0087763B1 - Elément de tamis en forme de plaque - Google Patents

Elément de tamis en forme de plaque Download PDF

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Publication number
EP0087763B1
EP0087763B1 EP83101793A EP83101793A EP0087763B1 EP 0087763 B1 EP0087763 B1 EP 0087763B1 EP 83101793 A EP83101793 A EP 83101793A EP 83101793 A EP83101793 A EP 83101793A EP 0087763 B1 EP0087763 B1 EP 0087763B1
Authority
EP
European Patent Office
Prior art keywords
screen
sieve
openings
apertures
length
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.)
Expired
Application number
EP83101793A
Other languages
German (de)
English (en)
Other versions
EP0087763A3 (en
EP0087763A2 (fr
Inventor
Gerhard Schmidt
Wolfgang Lehmann
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.)
Isenmann Drahterzeugnisse GmbH
Hein Lehmann AG
Original Assignee
Isenmann Drahterzeugnisse GmbH
Isenmann Siebe GmbH
Hein Lehmann 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 Isenmann Drahterzeugnisse GmbH, Isenmann Siebe GmbH, Hein Lehmann AG filed Critical Isenmann Drahterzeugnisse GmbH
Priority to AT83101793T priority Critical patent/ATE22237T1/de
Publication of EP0087763A2 publication Critical patent/EP0087763A2/fr
Publication of EP0087763A3 publication Critical patent/EP0087763A3/de
Application granted granted Critical
Publication of EP0087763B1 publication Critical patent/EP0087763B1/fr
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
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes

Definitions

  • the invention relates to a plate-shaped sieve element made of elastic material, with at least one sieve field, the gap-shaped sieve openings in the sieve plane running continuously over the length or width of the sieve field.
  • Such a screen element is known from DE-OS 2746408.
  • the long, uninterrupted gaps can be widened by the screenings, so that the gap accuracy is insufficient. It is therefore known from DE-OS 2634934 to alternate rows of short and long sieve openings.
  • Such a screen element has good properties in terms of its rigidity and splitting accuracy, but it could have a larger open screen area and improved drainage performance.
  • the object of the invention is to enlarge the open screen area in a screen element of the type mentioned at the outset without reducing the rigidity and splitting accuracy.
  • this object is achieved in that a row of shorter, gap-like second screen openings is arranged in parallel between the uninterrupted first screen openings.
  • a sieve element designed in this way also has a lower dead weight with the same load-bearing capacity or a higher load-bearing capacity with the same dead weight.
  • the sieve element 1 has a smooth upper side (sieve plane). On the underside are longitudinal and transverse webs, not shown, which stiffen the sieve element. In particular, an outer web 2 for stiffening runs around the edges on the underside, in the area of which no screen openings are arranged.
  • the approximately square-shaped sieve field has four webs 2 all around. Between two mutually parallel webs 2, the sieve openings are arranged in parallel, namely first sieve openings 3 as openings running continuously over the entire sieve field and between the sieve openings 3 rows 4 of second sieve openings 5, which are in relation to one another all of the same length and 1/5 to 1/20, preferably 1/10 of the length of the first screen openings. Rows 4 of second screen openings 5 alternate with first screen openings.
  • the widths of all sieve openings are the same and in the exemplary embodiment are approximately 0.5 mm, the length of the first sieve openings being approximately 120 mm and the length of the second sieve openings approximately 12 mm.
  • the remaining sieve surfaces between the openings 3 and rows 4 can be referred to as longitudinal webs 8 which run parallel to the openings.
  • the material to be screened is placed on the screen element from above.
  • Below the screen openings 3 and 5 are transverse webs 6, the upper sides of which are lower than the screen plane, transverse to the longitudinal direction of the openings.
  • the transverse webs 6 are arranged at regular intervals directly below the areas 7 of the sieve level which separate the second sieve openings 5 of a row.
  • the crosspieces 6 do not interfere with the flow through the second sieve openings 5, while the crosspieces 6 and the areas 7 laterally support the side walls and the upper edges of the first sieve openings 3.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Finger-Pressure Massage (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Claims (4)

1. Elément de crible (1) en forme de plaque en matériau élastique, avec au moins un champ de criblage, dont les ouvertures de crible (3, 5) en forme de fentes s'étendent ininterrompues dans le plan de criblage sensiblément sur la longueur ou la largeur du champ de criblage, caractérisé par le fait que, entre les premières ouvertures de crible ininterrompues (3) est disposée à chaque fois parallèlement une rangée (4) de secondes ouvertures de crible (5) plus courtes en forme de fentes.
2. Elément de crible selon la revendication 1, caractérisé en ce que la longueur des secondes ouvertures de crible (5) est de 1/5 à 1/20, de préférence environ 1/10, de la longueur des premières ouvertures de crible (3).
3. Elément de crible selon la renvendication 1, caractérisé par le fait que, pour le raidissement des éléments de crible (1), les entretoises longitudinales (8) parallèles qui se trouvent entre les premières et secondes ouvertures de crible (3, 5) sont reliées par des entretoises transversales (6) dont les faces supérieures se trouvent plus bas que le plan de criblage.
4. Elément de crible selon la revendication 3, caractérisé par le fait que les zones (7) de plan de criblage qui séparent les unes des autres les secondes ouvertures (5) d'une rangée se trouvent audessus des entretoises transversales (6).
EP83101793A 1982-03-03 1983-02-24 Elément de tamis en forme de plaque Expired EP0087763B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83101793T ATE22237T1 (de) 1982-03-03 1983-02-24 Plattenfoermiges siebelement.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823207581 DE3207581A1 (de) 1982-03-03 1982-03-03 Plattenfoermiges siebelement
DE3207581 1982-03-03

Publications (3)

Publication Number Publication Date
EP0087763A2 EP0087763A2 (fr) 1983-09-07
EP0087763A3 EP0087763A3 (en) 1984-10-31
EP0087763B1 true EP0087763B1 (fr) 1986-09-17

Family

ID=6157167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101793A Expired EP0087763B1 (fr) 1982-03-03 1983-02-24 Elément de tamis en forme de plaque

Country Status (4)

Country Link
US (1) US4473466A (fr)
EP (1) EP0087763B1 (fr)
AT (1) ATE22237T1 (fr)
DE (2) DE3207581A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8301096D0 (en) * 1983-01-15 1983-02-16 Cambridge Instr Ltd Electron scanning microscopes
US4819809A (en) * 1985-09-09 1989-04-11 Derrick Manufacturing Corporation Reinforced polyurethane vibratory screen
US4857176A (en) * 1986-08-04 1989-08-15 Derrick Manufacturing Corporation Reinforced molded polyurethane vibratory screen
JP2662215B2 (ja) * 1986-11-19 1997-10-08 株式会社日立製作所 細胞保持装置
DE3716472A1 (de) * 1987-05-16 1988-12-01 Steinhaus Gmbh Verfahren zur herstellung von siebmatten als siebbelag fuer systemsiebfelder und siebbelag
US4832834A (en) * 1988-07-11 1989-05-23 Baird Jr Howard R Elastomer sieve screen
NL8802492A (nl) * 1988-10-11 1990-05-01 Crellin Bv Kunststof kaasvat met tijdens het door spuitgieten vervaardigen van de opstaande wanden gevormde drainagesleuven.
US4918807A (en) * 1988-10-19 1990-04-24 A. Ahlstrom Corporation Screen and method of manufacture
JP2515808Y2 (ja) * 1990-10-01 1996-10-30 相川鉄工株式会社 製紙用ストレーナ
WO1995005248A1 (fr) * 1993-08-16 1995-02-23 The Black Clawson Company Tamis a fente pour materiau de fabrication de papier
US6634505B1 (en) * 1999-04-26 2003-10-21 Durex Products, Inc. Sieve bed for a sifting machine
US7011218B2 (en) * 2003-08-29 2006-03-14 Derrick Corporation Vibratory screen assemblies
DE102007028332A1 (de) * 2007-06-15 2008-12-18 Basf Se Verfahren zum Beschicken eines Reaktors mit einem Katalysatorfestbett, das wenigstens ringförmige Katalysatorformkörper K umfasst
US10342222B2 (en) 2017-03-23 2019-07-09 Verily Life Sciences Llc Sieving devices for pupae separation
US10835925B2 (en) 2017-03-23 2020-11-17 Verily Life Sciences Llc Sieving devices for pupae separation
US9992983B1 (en) 2017-03-23 2018-06-12 Verily Life Sciences Llc Sieving apparatuses for pupae separation
US10772309B2 (en) 2017-03-23 2020-09-15 Verily Life Sciences Llc Sieving apparatuses for pupae separation
CN112170199B (zh) * 2020-09-28 2024-10-11 安平县光明金属制品有限公司 一种新型负压复合网

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE235520C (fr) *
GB1483217A (en) * 1974-08-02 1977-08-17 Hein Lehmann Ag Screen panel assembled from individual segments made of elastic materials
DE2634934C3 (de) * 1976-08-04 1979-06-28 Hein, Lehmann Ag, 4000 Duesseldorf Plattenartiges Siebelement
ZA774472B (en) * 1977-07-25 1979-06-27 Herrmann Screens Mfg Co Ltd Improvements in or relating to screening apparatus
CA1102282A (fr) * 1977-08-10 1981-06-02 Hunter Wire Products Limited Traduction non-disponible
DE2746408A1 (de) * 1977-10-15 1979-04-19 Schauenburg Masch Siebkasten
DE3041338A1 (de) * 1980-11-03 1982-05-13 Hein, Lehmann AG, 4000 Düsseldorf Siebboden

Also Published As

Publication number Publication date
DE3366176D1 (en) 1986-10-23
EP0087763A3 (en) 1984-10-31
ATE22237T1 (de) 1986-10-15
DE3207581A1 (de) 1983-09-15
EP0087763A2 (fr) 1983-09-07
US4473466A (en) 1984-09-25

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