EP1317970A1 - Siebvorrichtung - Google Patents

Siebvorrichtung Download PDF

Info

Publication number
EP1317970A1
EP1317970A1 EP02026649A EP02026649A EP1317970A1 EP 1317970 A1 EP1317970 A1 EP 1317970A1 EP 02026649 A EP02026649 A EP 02026649A EP 02026649 A EP02026649 A EP 02026649A EP 1317970 A1 EP1317970 A1 EP 1317970A1
Authority
EP
European Patent Office
Prior art keywords
screening
section
ports
air
fraction
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.)
Withdrawn
Application number
EP02026649A
Other languages
English (en)
French (fr)
Inventor
Renzo Greghi
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
Application filed by Individual filed Critical Individual
Publication of EP1317970A1 publication Critical patent/EP1317970A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements

Definitions

  • the present invention relates to a screening apparatus for processing fractions deriving from working processes in general and, more specifically, from working processes in the field of the soil processing apparatus which process peat or other biomasses, such as recovery wood materials, and in systems processing solid municipal waste and providing the so-called dry/moist separation.
  • the apparatus can also be used for making fuel materials starting from the dry fraction of municipal solid waste, in processing plastics materials to be recovered, paper and paperboard materials derived from primary and secondary stocks, and for screening inert materials or soils containing polluting substances.
  • a plurality of series arranged screening apparatus are conventionally used.
  • the screening operation in particular, consists of size-separating the useful product from the polluting substance, as well as air separating the polluting material from the screened products, with a recovery of a product having a size greater than the mesh size of the screening elements.
  • the screening of the product is performed by a screening member the screening device of which can be constituted by a rotary cylinder or a disc screening assembly, whereas the screening of the polluting fraction, usually comprising plastics materials, is performed by an air type of separation.
  • the separating device comprises a separating chamber where, by using air, the polluting fraction is separated from the useful products.
  • the screening member comprises a cylinder or a plurality of screening discs, to which the material to be screened, comprising several fractions of different particle size, and to be further processed, and several polluting fractions to be ejected from the working cycle, is supplied continuously by a feeding or supplying belt arrangement.
  • the screening member divides the materials into a first fraction, which, as stated, is called the under-screening fraction, and comprises the product passing through the ports of the screening cylinder, and a second fraction, which has been called the over-screening fraction, comprising a product having a size larger than the port size of the screening member.
  • an air separating assembly which conventionally mainly comprises a chamber to which the fraction to be processed is supplied, said fraction comprising the polluting substances and remaining products, thereby causing the polluting substances to be separated while generating through the chamber a raising stream, by using one or more fans and one or more suckers.
  • the fraction of product separated from the polluting fraction due to the weight difference of said fraction deposits on an ejector belt removing it to the outside of the chamber and feeding it to further processing operations.
  • the materials to be processed have variable characteristics, with respect to their particle size and component rate.
  • prior methods provide to affect the screening section in order to change the port size, and the air section, to modify the air amount required for the separating process.
  • the aim of the present invention is to overcome the above mentioned drawbacks, by providing a screening apparatus for processing fractions deriving from working processes in general, allowing to greatly simplify all the operations related to the adjustment of the apparatus, thereby reducing the dead time of the several operating steps thereof.
  • a main object of the present invention is to provide such a screening apparatus which requires a comparatively small amount of processing air, thereby greatly reducing the environmental impact.
  • Another object of the present invention is to provide such a screening apparatus the operation cost of which is much smaller than that required by prior like apparatus, and which, moreover, requires a comparatively small power consume.
  • Yet another object of the present invention is to provide such a screening apparatus which, in addition to being advantageous from a mere , economic standpoint, is also very reliable and safe in operation.
  • a screening apparatus for processing fractions deriving from working processes in general, characterized in that said screening apparatus comprises a screening section for subdividing the material being processed into an under-screening fraction, comprising a material passing through screening ports of said apparatus, and an over-screening fraction, comprising polluting materials which do not pass through said screening ports, said screening section comprising moreover an air supplying section for supplying air to said screening ports to prevent the polluting material from passing therethrough.
  • the screening apparatus for processing fractions deriving from working processes in general comprises a bearing framework 2, defining a screening section 3 including a screening member made of a plurality of screening shafts 4 supporting eccentric discs 5, which are rotatably coupled to a coupling frame 3.
  • the coupling frame 3 comprises inclination changing means, said means comprising, for example, a cylinder 6 which can be operated or driven by an oleodynamic central unit 7.
  • the screening member comprises, in particular, a plurality of adjoining shafts 4 supported by bearings 9, for facilitating the rotary movement thereof, and also adjoining the related discs 5 so as to define a screening plane 10.
  • the shafts 4 are driven by a driving motor 11 which is advantageously provided with a frequency changing device, to provide an optimum driving speed depending on the types of the materials being processed.
  • the screening plane or panel 10 is arranged above a collecting hopper 12, which, at the bottom thereof, leads to a removal or outlet belt 13, on which the product is deposited, so as to cause said product to pass through a plurality of screening ports or gaps arranged between respective discs of the screening section.
  • a main feature of the present invention is that an air processing or supplying section is moreover provided, which can be directly embedded in the screening section and which is made by coupling the inside 20 of the shafts 3 with a duct 21 for supplying air, which air feeding duct is coupled to the individual shafts through adjusting valves 22.
  • the duct 21 is in turn connected to a ventilating unit 23, designed for controlling the amount of air being delivered.
  • the subject apparatus from a mere dynamic standpoint, is based on the simultaneous raising and entraining operation to which is subjected the material fed to the apparatus, under the action the material is subjected to owing to the discs 5 which, as they are rotatively driven, continuously blends and remix the material, causing said material to be stirred as it is fed to the outlet.
  • the material or product is caused to pass through the screening ports or gaps defined between a disc and an adjoining disc of the screening section, thereby said material is collected on the outlet belt 13 arranged under the hopper 12.
  • the large size material of the screening disc gaps or ports is driven to the outlet and conveyed on an outlet belt, generally indicated by the reference number 15.
  • the air being supplied to the screening section prevents bi-dimensional bodies, such as plastics materials, which have the smaller cross-section, from passing through the screening ports.
  • each shaft 4 which has an air distributing section upward directed.
  • the amount of air being supplied is defined depending on the design parameters, so as to assure that an even air flow is provided, upward directed, and, moreover, to provide such an upward directed stream sufficient to prevent said plastics materials or other undesired bodies from passing through the screening ports or gaps.
  • the screening apparatus allows to provide an optimum adjustment of the screening process, owing to the control system included in the apparatus.
  • the apparatus according to the present invention does not include any plastics material and powder sucking devices, with a consequent less dead time in the operation of the machine, which would be caused by possible failures of the sucker blowers due to said plastics material and the wear caused by the sucked powder.
  • the subject apparatus require a less power cost, together with an actual absence of decanting chambers or calming devices as well as depowdering sections for removing powders, with a consequent much less environmental impact.
  • the subject apparatus can be operated with a much less cost, since the screening process is carried out by a single screening apparatus, with a simplified maintenance requirement, a less power cost, and a less process movements of the treated products.
  • the used materials, as well as the contingent size and shapes of the component elements of the apparatus can be any, depending on requirements.
EP02026649A 2001-12-05 2002-11-29 Siebvorrichtung Withdrawn EP1317970A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20012570 2001-12-05
ITMI20012570 ITMI20012570A1 (it) 2001-12-05 2001-12-05 Macchina di vagliatura per il trattamento di frazioni derivanti da processi di lavorazione in genere

Publications (1)

Publication Number Publication Date
EP1317970A1 true EP1317970A1 (de) 2003-06-11

Family

ID=11448666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02026649A Withdrawn EP1317970A1 (de) 2001-12-05 2002-11-29 Siebvorrichtung

Country Status (2)

Country Link
EP (1) EP1317970A1 (de)
IT (1) ITMI20012570A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107263703A (zh) * 2017-06-27 2017-10-20 杜辉 一种淤泥环保墙体砖制造装置及生产方法
IT201900015126A1 (it) * 2019-08-28 2021-02-28 Pal S R L Macchina selezionatrice per la pulizia di materiale incoerente e relativo procedimento di selezione
CN117797536A (zh) * 2024-03-01 2024-04-02 山东尼德环保装备有限公司 一种餐饮垃圾固液分离装置
CN117797536B (en) * 2024-03-01 2024-04-30 山东尼德环保装备有限公司 Solid-liquid separation device for food waste

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947416A (en) * 1958-05-27 1960-08-02 Ross Edward Owen Grain separator
SU1764712A1 (ru) * 1990-06-11 1992-09-30 Белорусский Комплексный Проектно-Изыскательский И Научно-Исследовательский Институт Топливной Промышленности Устройство дл классификации
EP0635313A1 (de) * 1993-06-22 1995-01-25 Kabushiki Kaisha Miike Tekkosho Siebmaschine
EP0834353A1 (de) * 1996-09-27 1998-04-08 B.V. Machinefabriek Boa Vorrichtung und Scheibe zum Trennen fester Stoffe
EP1188489A2 (de) * 2000-09-13 2002-03-20 Ionics Italba S.P.A. Siebvorrichtung für Biomasse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947416A (en) * 1958-05-27 1960-08-02 Ross Edward Owen Grain separator
SU1764712A1 (ru) * 1990-06-11 1992-09-30 Белорусский Комплексный Проектно-Изыскательский И Научно-Исследовательский Институт Топливной Промышленности Устройство дл классификации
EP0635313A1 (de) * 1993-06-22 1995-01-25 Kabushiki Kaisha Miike Tekkosho Siebmaschine
EP0834353A1 (de) * 1996-09-27 1998-04-08 B.V. Machinefabriek Boa Vorrichtung und Scheibe zum Trennen fester Stoffe
EP1188489A2 (de) * 2000-09-13 2002-03-20 Ionics Italba S.P.A. Siebvorrichtung für Biomasse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Week 199340, Derwent World Patents Index; Class P43, AN 1993-318642, XP002233757 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107263703A (zh) * 2017-06-27 2017-10-20 杜辉 一种淤泥环保墙体砖制造装置及生产方法
CN107263703B (zh) * 2017-06-27 2019-01-11 杜辉 一种淤泥环保墙体砖制造装置及生产方法
IT201900015126A1 (it) * 2019-08-28 2021-02-28 Pal S R L Macchina selezionatrice per la pulizia di materiale incoerente e relativo procedimento di selezione
WO2021038606A1 (en) * 2019-08-28 2021-03-04 Pal S.R.L. Selector machine to clean incoherent material, and corresponding selection method
CN117797536A (zh) * 2024-03-01 2024-04-02 山东尼德环保装备有限公司 一种餐饮垃圾固液分离装置
CN117797536B (en) * 2024-03-01 2024-04-30 山东尼德环保装备有限公司 Solid-liquid separation device for food waste

Also Published As

Publication number Publication date
ITMI20012570A1 (it) 2003-06-05

Similar Documents

Publication Publication Date Title
JP3197017U (ja) 穀物用選別機
US20100326065A1 (en) Hydraulic power transmission system for a mineral material processing plant, a method for controlling the same, a screening machine and a crushing machine
US20190351455A1 (en) System, apparatus and method for separating materials using a screen bed and vacuum
CN111167589B (zh) 一种干法制砂工艺
CN109967494B (zh) 一种处理建筑垃圾的工艺方法及系统装置
KR101685025B1 (ko) 건설폐기물의 순환골재 선별처리장치
US5375720A (en) Dry separation of particulate material of different densities
CN114192390A (zh) 一种多效谷糙分离设备及方法
EP1317970A1 (de) Siebvorrichtung
RU2528346C1 (ru) Зерноочистительная машина
EP1188489B1 (de) Siebvorrichtung für Biomasse
RU2396122C1 (ru) Установка для измельчения и сепарации фуражного зерна
KR101763187B1 (ko) 쌀눈 선별 시스템
CN209968913U (zh) 一种种子分离回收系统
CN109834045B (zh) 一种种子分离回收系统
CN113385286B (zh) 砂石干法生产中的砂、粉精细化处理工艺及系统
CN206454914U (zh) 粮食移动清理系统的专用垂直吸风装置
US717971A (en) Separator.
CN215140247U (zh) 一种加工轻质或超细粉体非金属矿的磨粉装置
KR101557475B1 (ko) 버섯배지용 발효톱밥 제조장치
CN216397096U (zh) 一种用于中药饮片加工的变频风选装置
US889811A (en) Separator.
CN215150766U (zh) 一种高速混料机用快速分筛装置
CN213287672U (zh) 一种用于中药的连续式分级风选机
CN211100127U (zh) 一种可控变频风选装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030731

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

17Q First examination report despatched

Effective date: 20040423

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20060613