EP0074935A2 - Selbstreinigendes, sich hin- und herbewegendes Sieb - Google Patents

Selbstreinigendes, sich hin- und herbewegendes Sieb Download PDF

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Publication number
EP0074935A2
EP0074935A2 EP82830231A EP82830231A EP0074935A2 EP 0074935 A2 EP0074935 A2 EP 0074935A2 EP 82830231 A EP82830231 A EP 82830231A EP 82830231 A EP82830231 A EP 82830231A EP 0074935 A2 EP0074935 A2 EP 0074935A2
Authority
EP
European Patent Office
Prior art keywords
net
screen
wires
underlying
vibrating
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
EP82830231A
Other languages
English (en)
French (fr)
Other versions
EP0074935B1 (de
EP0074935A3 (en
Inventor
Ilario Bearzot
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
Original Assignee
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
Priority claimed from IT83466/81A external-priority patent/IT1146795B/it
Priority claimed from ITUD1982U60327U external-priority patent/IT8260327U1/it
Priority claimed from IT83439/82A external-priority patent/IT1158138B/it
Application filed by Individual filed Critical Individual
Publication of EP0074935A2 publication Critical patent/EP0074935A2/de
Publication of EP0074935A3 publication Critical patent/EP0074935A3/en
Application granted granted Critical
Publication of EP0074935B1 publication Critical patent/EP0074935B1/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
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4663—Multi-layer screening surfaces
    • 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
    • B07B1/4672—Woven meshes
    • 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
    • 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

Definitions

  • the present invention relates to a vibrating wire self-cleaning reciprocating screen particularly suitable for sieving and screening both dry and more or less damp or damp materials of various types and granulations, and preferably gravelly but also other earthy or crushing materials, including metallic or non- metallic materials, of various type, shape and structure, in which during the screening obstructions of the screening and sieving net might occur.
  • Dry or- damp curve-shaped or multiform grain sieved material can easily obstruct the net, especially if these grains are mixed with lamellar or schistose mixing materials (e.g. clay, kaolin, etc.).
  • lamellar or schistose mixing materials e.g. clay, kaolin, etc.
  • the so-called “harp nets” have recently been manufactured, namely nets in which now and then the longitudinal wires do not present weaving through variously spaced weft to realize free length variable widths which aid the vibrations of the warp wires in a continuous way and according to a perpendicular movement to the screening plane, being the transversal wefts suitably spaced between them also at irregular intervals.
  • the scope of the invention as claimed is to provide a remedy to the above-mentioned drawbacks and more particularly to carry out a net screen in which the above-described obstructions do not occur.
  • the invention essentially consists in the realization of a screening net of a traditional type, corresponding to the specific screening requirements, to screen material sliding in longitudinal direction, in which on said screening net a number of longitudinal wires are fixed free to vibrate according to a determinate frequency with the screening vibration.
  • the screen consists essentially of a well-known type weft and warp suitably shaped net " A”, laterally stretched and hooked by two longitudinal welts "C” for supporting the same net in order to form the screening plane.
  • the screening net "A" can have any suitable shape and will consist of weft 1 and warp 2 according to a convenient system while in the specific case the vibrating wires 3 will be transversally fixed by a further weaving of transversal weft 2'.
  • FIGS lA,2A,3A,4A show varied solutions in which in Figures 1A and 2A the removal of the lateral welts of the underlying screening net "A" is provided for a certain portion of a determinate number of longitudinal wires 1 by means of shearing said wires in order to define a free opening "i” with a net of only transversal warpless wires 2 and in which in correspondence with such openings "i” a free jutting out part is situated with weft wires 2' of the upper vibrating net "B” so that these free ones can be placed side by side with the underlying weft screening wires 2 in order to lie on the same plane during the lateral seam "C" as shown in Figure 3A.
  • the set of weft transversal wires 2' can be then tightened by means of seam wires 7 as shown in Figures 2A and 4A and the weft wires 2' can be of a continuous type as shown on the right side of Figure 4A or of a discontinuous type as shown on the left side of Figure 4A in order to form sets of wires independently vibrating in groups, being these binding devices always of a continuous type at the end 5 to stretch the longitudinal vibrating wires 3.
  • the weft wires 2' can be in single or multiple number.
  • Figures 1B,2B,5B show a further variation to the preceding solutions in which the net or screening plane consists of an underlying screening net "A" with a superimposed self-cleaning net “B” preferably made of separate panels fixed to the underlying net in the upstream joint zones with its reinforcement 2' by means of intermediate clamping bolts 8.
  • the net or screening plane consists of an underlying screening net "A” with a superimposed self-cleaning net “B” preferably made of separate panels fixed to the underlying net in the upstream joint zones with its reinforcement 2' by means of intermediate clamping bolts 8.
  • a main characteristic of such structured vibrating net panels "B” lies in that each vibrating wire 3 is fixed ahead the braiding band 2', while at the opposite end it is free to vibrate, obviously being the braiding band 2' upstream situated and the free end of the wires 3 downstream oriented as to the advancing material to be screened; so in the joint zones "g" there will be the end of the vibrating wires 3 free for each panel “B” and the beginning of the braiding band 2' of the following one.
  • the tightening of the band 2 of the panels "B” on the underlying net "A” will be carried out with bolts 8, while at the end of the panels, before the joint zones "g" and also of the screen 5', the wires 3 could end also before.
  • a reinforcement braiding of the underlying net "A” can be carried out particularly for the weft wires 2, with the addition of several adjacent weft wires 6. This will cause a better resistance and ruggedness and a consequent increased life of the entire net.
  • the underlying screening net "A” can be similarly made of panels and tightened with the same clamping bolts 8 together with the superimposed net "B”.
  • a band "D” can be placed, consisting of a belt 7 sufficiently stretched between the opposite hooking and stretching welts "C” by means of tightening with suitable opening "i” equal in size to the underlying screening net "A”, in order to allow a tightening of the device without overlapping.
  • Such stretched belt 7 supports inserted annular spacing bosses 9 to keep in a uniform position the respective set of vibrating wires for the required self-cleaning effect 3.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
EP82830231A 1981-09-15 1982-09-10 Selbstreinigendes, sich hin- und herbewegendes Sieb Expired EP0074935B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
IT8346681 1981-09-15
IT83466/81A IT1146795B (it) 1981-09-15 1981-09-15 Vaglio autopulente
ITUD1982U60327U IT8260327U1 (it) 1982-02-18 1982-02-18 Vaglio autopulente perfezionato
IT6032782U 1982-02-18
IT83439/82A IT1158138B (it) 1982-08-31 1982-08-31 Rete con elementi autopulenti componibili
IT8343982 1982-08-31

Publications (3)

Publication Number Publication Date
EP0074935A2 true EP0074935A2 (de) 1983-03-23
EP0074935A3 EP0074935A3 (en) 1984-11-07
EP0074935B1 EP0074935B1 (de) 1988-05-04

Family

ID=27273737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830231A Expired EP0074935B1 (de) 1981-09-15 1982-09-10 Selbstreinigendes, sich hin- und herbewegendes Sieb

Country Status (2)

Country Link
EP (1) EP0074935B1 (de)
DE (1) DE3278423D1 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000025890A1 (en) * 1998-10-30 2000-05-11 Tuboscope I/P Inc. A screen for use in a shale shaker and method for using same
US6340089B1 (en) 1993-01-13 2002-01-22 Derrick Manufacturing Corporation Method of fabricating undulating screen for vibratory screening machine
GB2390831A (en) * 2002-06-06 2004-01-21 Haver & Boecker Wire netting weave for sieve tray
WO2004096453A3 (en) * 2003-05-02 2005-01-20 Varco Int Screen assembly for a vibratory separator
CN103316839A (zh) * 2013-07-17 2013-09-25 佳施加德士(苏州)塑料有限公司 一种筛网
CN103752510A (zh) * 2014-02-17 2014-04-30 中国能建集团装备有限公司北京技术中心 自清理型振动筛筛板
CN112676146A (zh) * 2020-12-02 2021-04-20 叶喜春 一种建筑垃圾制砖的骨料筛选传输装置
US20210121917A1 (en) * 2019-10-29 2021-04-29 General Electric Company Powder Sieving System Using a Broad Frequency Filter
CN112743104A (zh) * 2019-10-29 2021-05-04 通用电气公司 用于多个金属粉末处理装置的粉末回收系统
EP3815796A1 (de) * 2019-10-29 2021-05-05 General Electric Company Pulverrückgewinnungssystem und betriebsverfahren
EP3815800A1 (de) * 2019-10-29 2021-05-05 General Electric Company Pulverrückgewinnungssystem und betriebsverfahren
EP3815797A1 (de) * 2019-10-29 2021-05-05 General Electric Company Filter für ein pulversystem
CN116174297A (zh) * 2023-04-21 2023-05-30 四川远方云天食品科技有限公司 一种火锅底料生产用原料防堵筛分装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1089947A (fr) * 1953-04-09 1955-03-24 Dispositif tamiseur et ses applications
GB856181A (en) * 1958-11-11 1960-12-14 Steinhaus Gmbh Improvements relating to wire screens
GB1258995A (de) * 1969-11-11 1972-01-05
DE2846342A1 (de) * 1977-10-26 1979-05-03 United Wire Group Ltd Sieb und verfahren zu seiner herstellung

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6340089B1 (en) 1993-01-13 2002-01-22 Derrick Manufacturing Corporation Method of fabricating undulating screen for vibratory screening machine
US6564947B2 (en) 1993-01-13 2003-05-20 Derrick Manufacturing Corporation Method of screening material utilizing a plurality of undulating screen assemblies
WO2000025890A1 (en) * 1998-10-30 2000-05-11 Tuboscope I/P Inc. A screen for use in a shale shaker and method for using same
US6186337B1 (en) 1998-10-30 2001-02-13 Tuboscope I/P, Inc. Dual screen element having upper scalping screen adhered to crests of corrugated lower screen
GB2363344A (en) * 1998-10-30 2001-12-19 Tuboscope I P Inc A screen for use in a shale shaker and method for using same
GB2363344B (en) * 1998-10-30 2002-06-05 Tuboscope I P Inc A screen for use in a shale shaker and method for using same
GB2390831A (en) * 2002-06-06 2004-01-21 Haver & Boecker Wire netting weave for sieve tray
GB2390831B (en) * 2002-06-06 2005-08-17 Haver & Boecker Sieve tray for a sieve device
WO2004096453A3 (en) * 2003-05-02 2005-01-20 Varco Int Screen assembly for a vibratory separator
GB2416502A (en) * 2003-05-02 2006-02-01 Varco Int Screen assembly for a vibratory separator
GB2416502B (en) * 2003-05-02 2006-11-29 Varco Int Screen assembly for a vibratory separator
CN103316839A (zh) * 2013-07-17 2013-09-25 佳施加德士(苏州)塑料有限公司 一种筛网
CN103752510A (zh) * 2014-02-17 2014-04-30 中国能建集团装备有限公司北京技术中心 自清理型振动筛筛板
EP3815799A1 (de) * 2019-10-29 2021-05-05 General Electric Company Pulverrückgewinnungssystem für mehrere metallpulververarbeitungsvorrichtungen
US11794256B2 (en) 2019-10-29 2023-10-24 General Electric Company Powder reclamation system and operating method
CN112743104A (zh) * 2019-10-29 2021-05-04 通用电气公司 用于多个金属粉末处理装置的粉末回收系统
CN112743103A (zh) * 2019-10-29 2021-05-04 通用电气公司 使用宽频过滤器的粉末筛分系统
EP3815796A1 (de) * 2019-10-29 2021-05-05 General Electric Company Pulverrückgewinnungssystem und betriebsverfahren
EP3815798A1 (de) * 2019-10-29 2021-05-05 General Electric Company Pulversiebsystem mit einem breitbandfrequenzfilter
EP3815797A1 (de) * 2019-10-29 2021-05-05 General Electric Company Filter für ein pulversystem
US12115557B2 (en) 2019-10-29 2024-10-15 General Electric Company Powder reclamation system for multiple metal powder processing devices
US20210121917A1 (en) * 2019-10-29 2021-04-29 General Electric Company Powder Sieving System Using a Broad Frequency Filter
US11376632B2 (en) 2019-10-29 2022-07-05 General Electric Company Broad frequency filter for powder system
US11590537B2 (en) * 2019-10-29 2023-02-28 General Electric Company Powder sieving system using a broad frequency filter
EP3815800A1 (de) * 2019-10-29 2021-05-05 General Electric Company Pulverrückgewinnungssystem und betriebsverfahren
CN112676146A (zh) * 2020-12-02 2021-04-20 叶喜春 一种建筑垃圾制砖的骨料筛选传输装置
CN116174297A (zh) * 2023-04-21 2023-05-30 四川远方云天食品科技有限公司 一种火锅底料生产用原料防堵筛分装置

Also Published As

Publication number Publication date
DE3278423D1 (en) 1988-06-09
EP0074935B1 (de) 1988-05-04
EP0074935A3 (en) 1984-11-07

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