US3826366A - Device for selectively discharging refuse material for separate recovery of fibrous material - Google Patents

Device for selectively discharging refuse material for separate recovery of fibrous material Download PDF

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Publication number
US3826366A
US3826366A US00332100A US33210073A US3826366A US 3826366 A US3826366 A US 3826366A US 00332100 A US00332100 A US 00332100A US 33210073 A US33210073 A US 33210073A US 3826366 A US3826366 A US 3826366A
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Prior art keywords
conduit
air stream
separator
conveying system
collecting
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Expired - Lifetime
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US00332100A
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English (en)
Inventor
P Naumburg
H Hyden
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Envac Centrlasug AB
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Centralsug AB
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F5/00—Gathering or removal of refuse otherwise than by receptacles or vehicles
    • B65F5/005—Gathering or removal of refuse otherwise than by receptacles or vehicles by pneumatic means, e.g. by suction

Definitions

  • the invention starts from the basic'idea that it may be advantageous under the fibre recovery aspect to recover from garbage and similar mixed material only that part of its content of fibrous material which is airborne in the conveying air stream, no attempt being made to recover agglomerated fibre material forming part of the slower stream of heavier material.
  • the invention contemplates a'device for recovering fibrous material from mixed material such as garbage, which in and by an air stream is conveyed through a collecting conduit from a collecting system to a terminal station where specifically heavier and lighter fractions of the material are.selectively separated from the air stream and are discharged therefrom to separate places outside the air stream, such discharge being performed with the state of vacuum in the conveying system being substantially maintained.
  • Fibre recovery is further improved by the provision of means enabling the percentage of loose paper in the collected and conveyed material to be increased at the expense of the proportion of heavy compact fibrous material discharged together with the heavy material.
  • a measure which is particularly advantageous in this connection consists in providing, at positions where fibrous refuse is produced in particularly great amounts and possibly in packed, tied or bound condition, specific fibre material introduction openings combined with means for subdividing the agglomerated fibrous material into pieces which are more inclined to follow with the air stream than to behave as heavy fraction material.
  • FIG. 1 is a schematic representation of a terminal station of a pneumatic garbage conveying system with material discharge performed in two steps
  • FIG. 2 is a schematic representation of a terminal station having a material classifying screw provided between the heavy material outlet and the light material outlet.
  • mixed material for example garbage from a conventional collecting system (not shown) comprising introduction chutes and connecting conduits is supplied to a collecting conduit 1 which via a separating arrangement comprising first and second separators 2 and 3 is connected to'an air outlet 4 leading via a fines separator or filter 5 to the suction side of a suction machine unit 6 from which the air from which the conveyed material has been removed in separators 2 and 3 and which has been cleaned in the filter 5 is discharged to the atmosphere.
  • a separating arrangement comprising first and second separators 2 and 3
  • a fines separator or filter 5 leading via a fines separator or filter 5 to the suction side of a suction machine unit 6 from which the air from which the conveyed material has been removed in separators 2 and 3 and which has been cleaned in the filter 5 is discharged to the atmosphere.
  • a conduit 10 is branched-off from the substantially straight collecting conduit 1 to feed said first separator, the heavier fraction material conveyed by the air stream along the bottom of the collecting conduit 1 entering into said conduit 10 under the action of gravity whereas the airborne light material fraction follows with the main stream of the conveying air through the extension of collecting conduit 1 beyond the branching point.
  • the heavy material from branch conduit 10 enters into a receiving chamber 11 having a bottom opening to which a compactor 12 is connected.
  • a reciprocating piston or a conveyor screw forming the propelling element of the compactor feeds the heavy material received in the direction of and through an outlet port into a conveying container which is attached to the outlet port of the compactor in an air-tight manner and which after filling is exchanged against an empty container.
  • the collecting conduit 1 terminates in the lighter fraction material separator 3 which here is schematically illustrated as a cyclone having a central air outlet 4 at the upper end and an air-tight material discharge sluice 20 at the lower end.
  • an important advantage of the invention resides in that after the preceding separation of the heavymaterial in the first separator 2 the cyclone used for the separation of the light-weight material may be constructed in respect to reduced strain requirements and that its construction can be particularly adapted to the specific character of the residual light material fraction.
  • the reduction in cost obtained thereby and the increase in the effectiveness of separation will to a certain extent balance the increase in cost caused by the incorporation of the heavy material separator 2 into the system.
  • the discharge of the light-weight material through sluice 20 does not require an equally complicated and bulky arrangement as required for vacuum-tight discharge of the heavy material.
  • the arrangement may be such that with the aid of a piston or screw :1 successively discharged plug of material is formed in the outlet, said plug during discharge effectively preventing air from penetrating into the suction system.
  • FIG. 2 may be used in which the collecting conduit 1 opens into a chute 30 to the bottom of which, not shown, a heavy material outlet, for example of the type described in connection with FIG. 1, is attached. Said chute 30 and outlet together form a first or heavier fraction separator.
  • the conveying air is discharged through a passage 31 formed by a drum slowly rotating about an essentially horizontal axis and having an inwardly extending helical guide wall 32, the halves of which counted from a transverse central section plane are threaded in opposite directions in such a way that heavier material accide'ntally introduced by theair stream into the drum 31 and supported by the cylindrical wall thereof is repulsed and returned back into chute 30 whereas lightweight material foliowing with the air stream will pass without hinder through the drum passage past the helical wall 32 and into a chute 33 which atthe lower end opens into a light material outlet not shown Said chute 33 and outlet together form asecond or lighter fraction separator.
  • the air is discharged through an outlet 34 leading to an air cleaning and suction machinery, for example, corresponding to parts 4, and 6 in FIG. 1.
  • the outlet 34 is in communication with the passage through drum 31 and chute 33 via a material rejecting drum 35 rotating concentrically with the outlet 34 and having at the v end facing the outlet 34 an opening communicating with the outlet whereas the opposite end surface is closed.
  • the drum 35 is provided withlongitudinal apertures between a system of longitudinally extending ribs so that air can enter into the interior of the drum and be discharged through the one end surface of the drum into outlet 34 whereas lightweight material conveyed by the air will be flung away centrifugally under the action of the ribs from the drum surface and out of the path of the air stream to permit such light-weight material to fall down towards'the bottom of chute 33 to be dischaged therefrom.
  • drum 35 is driven at the high speed required for the described centrifugal action by a motor not shown, a motor 40 driving drum 31 at a considerably lower speed is provided on the housing of the separator unit. Motor 40 engages a gearing 41 which in turn is in driv- 4 ing engagement with a rack 42 extending about the periphery of drum 31.
  • the advantages obtained by the embodiment shown in FIG. 2 reside, on the one hand, in that a sharper separation of the material into a heavy-weight and a lightweight fraction is obtained by means of the helical wall of drum 31 and, on the other hand, that the separation of the light-weight material from the air stream can take place without the use of a cyclone, i.e. with reduced space requirements.
  • Theair flows in a straight, comparatively short path from the upper end of separation chute 30 to the outlet 34.
  • chutes 30 and 33 The discharge of the material fractions from chutes 30 and 33 respectively may of course be performed as described above or in any other suitable way.
  • a device for selectively discharging refuse material containing specifically heavier and lighter fractions, said lighter fractions comprising fibrous material, from a vacuum conveying system comprising a collecting conduit through which said refuse material is conveyed in a suction-induced air stream, said device comprising a conduit branched-off from said collecting conduit in a position gravitationally to receive heavier fraction refuse material, a first separator connected to said branched-off conduit and permitting such heavier fraction material to be separated from the air stream with the state of vacuum maintained in the conveying sys .tem, and a second separator terminating said collecting conduit and passed by said air stream, said second separator permitting air stream-borne lighter fraction refuse material to be separated from said air stream with the state of vacuum maintained in the conveying system, said first separator comprising a chamber connected to said branched-off conduit, a return conduit connecting said chamber with said collecting conduit downstreams said branched-off conduit, a material collecting room underlying said chamber and in open communication therewith, and means operable to discharge material from said material collecting room
  • discharge means comprise an outlet port in said material collecting room, an exchangeable receiving container sealingly attached to said outlet port, and a propelling member operating in said material collecting room to move said heavier fraction material towards and through port outlet prot and into said receiving container to be compacted therein.
  • a device for selectively discharging refuse material containing specifically heavier and lighter fractions, said lighter fractions comprising fibrous material, from a vacuum conveying system comprising a collecting conduit through which said refuse material is conveyed in a suction-induced air stream, said device comprising a conduit branched-off from said collecting conduit in a position gravitationally to receive heavier fraction refuse material, a first separator connected, to said branched-off conduit and permitting such heavier fraction material to be separated from the air stream with the state of vacuum maintained in the conveying sys tem, and a second separator terminating said collecting conduit and passed by said air stream, said second separator permitting air stream-borne lighter fraction refuse material to be separated from said air stream with the state of vacuum maintained in the conveying system, a section of said collecting conduit between said branched-off conduit and said second separator comprising a cylindrical drum rotatable about a substantially horizontal axis and having an open entrance end near said branched-off conduit and an open exit end near said second separator, an inwardly project
  • a device for selectively discharging refuse material containing specifically heavier and lighter fractions, said lighter fractions comprising fibrous material, from a vacuum conveying system comprising a collecting conduit through which said refuse material is conveyed in a suction-induced air stream, said device'comprising a conduit branched-off from said collecting conduit in a position gravitationally to receive heavier fraction refuse material, a first separator connected to said branched-off conduit and permitting such heavier fraction material to be separated from the air stream with the state of vacuum maintained in the conveying system, and a second separator terminating said collecting conduit and passed by said air stream,.said second separator permitting air stream-borne lighter fraction refuse material to be separated from said air stream with the state of vacuum maintained in the conveying system, said collecting conduit being upstream of said device and in communication with specific fibre material inputs in addition to inputs for said refuse material containing heavier and lighter fractions.
  • a vacuum conveying system comprising a collecting conduit through which said refuse material is conveyed in a suction-induced air stream, said device comprising a conduit branched-off from said collecting conduit in a position gravitationally to receive heavier fraction refuse material, a first separator connected to said branched-off conduit and permitting such heavier fraction material to be separated from the air stream with the state of vacuum maintained in the conveying system, and a second separator terminating said collecting conduit and passed by said air stream, said second separator permitting air stream-borne light fraction refuse material to be separated from said air stream with the state of vacuum maintained in the conveying system, said second separator comprising a discharge port leading to the outside atmosphere and means adapted to compact separated lighter-fraction refuse material to form a plug successively discharged from said discharge port and forming a seal therein againstpenetration of air into the vacuum conveying system.
  • a device for selectively discharging refuse material containing specifically heavier and lighter fractions, said lighter fractions comprising fibrous material, from a vacuum conveying system comprising a collecting conduit through which said refuse material is conveyed in a suction-induced air stream, said devicev comprising a conduit branched-off from said collecting conduit in a position gravitationally to receive heavier fraction refuse material, a first separator connected to said branched-off conduit and permitting such heavier fraction material to be separated from the air stream with the state of vacuum maintained in the conveying system, and a second separator terminating said collecting conduit and passed by said air stream, said second separator permitting air stream-borne lighter fraction refuse material to be separated from said air stream with the state of vacuum maintained in the conveying system, said second separator having an inlet connection tosaid collecting conduit, an air outlet leading to a vacuum pump unit, and laterally of an air flow path formed between said inlet connection and said air outlet, a sluice-like material outlet, a drum being rotatably supported in a position intercepting said air

Landscapes

  • Refuse Collection And Transfer (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Cyclones (AREA)
US00332100A 1972-02-25 1973-02-13 Device for selectively discharging refuse material for separate recovery of fibrous material Expired - Lifetime US3826366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7202385A SE373332C (sv) 1972-02-25 1972-02-25 Anordning for utvinning av fibermaterial ur blandat gods

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DE (1) DE2308404C3 (de)
SE (1) SE373332C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113680A (en) * 1975-03-31 1978-09-12 Taisho Pharmaceutical Co., Ltd. Method for preparing 17 α-ester-21-halo pregnanes
US20130004248A1 (en) * 2010-03-12 2013-01-03 Maricap Oy Method and apparatus in a pneumatic material conveying system, and a waste conveying system
CN103482282A (zh) * 2012-09-21 2014-01-01 长沙中联重科环卫机械有限公司 生活垃圾料仓及垃圾处理系统
US20150321844A1 (en) * 2012-07-02 2015-11-12 Maricap Oy Method and apparatus for handling material in a pneumatic materials handling system
US20150375935A1 (en) * 2013-03-05 2015-12-31 Maricap Oy Method and apparatus in pneumatic materials handling and a waste container/separating device
CN105501773A (zh) * 2016-01-05 2016-04-20 洛阳盛豫重工机械有限公司 一种垃圾压缩回收真空包装机的使用方法
US10773886B2 (en) * 2013-07-30 2020-09-15 Maricap Oy Method and apparatus for feeding in and handling waste material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3323162A1 (de) * 1983-06-28 1985-01-03 Motan Gmbh, 7972 Isny Foerdereinrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US279164A (en) * 1883-06-12 Chaeles b
US1878753A (en) * 1930-11-22 1932-09-20 John H Brown Refuse separator
US3572503A (en) * 1968-11-04 1971-03-30 Waste Reclamation Corp Trash segregation apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US279164A (en) * 1883-06-12 Chaeles b
US1878753A (en) * 1930-11-22 1932-09-20 John H Brown Refuse separator
US3572503A (en) * 1968-11-04 1971-03-30 Waste Reclamation Corp Trash segregation apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113680A (en) * 1975-03-31 1978-09-12 Taisho Pharmaceutical Co., Ltd. Method for preparing 17 α-ester-21-halo pregnanes
US20130004248A1 (en) * 2010-03-12 2013-01-03 Maricap Oy Method and apparatus in a pneumatic material conveying system, and a waste conveying system
US20150321844A1 (en) * 2012-07-02 2015-11-12 Maricap Oy Method and apparatus for handling material in a pneumatic materials handling system
CN103482282A (zh) * 2012-09-21 2014-01-01 长沙中联重科环卫机械有限公司 生活垃圾料仓及垃圾处理系统
CN103482282B (zh) * 2012-09-21 2016-08-31 长沙中联重科环卫机械有限公司 生活垃圾料仓及垃圾处理系统
US20150375935A1 (en) * 2013-03-05 2015-12-31 Maricap Oy Method and apparatus in pneumatic materials handling and a waste container/separating device
US9896265B2 (en) * 2013-03-05 2018-02-20 Maricap Oy Method and apparatus in pneumatic materials handling and a waste container/separating device
US10773886B2 (en) * 2013-07-30 2020-09-15 Maricap Oy Method and apparatus for feeding in and handling waste material
CN105501773A (zh) * 2016-01-05 2016-04-20 洛阳盛豫重工机械有限公司 一种垃圾压缩回收真空包装机的使用方法

Also Published As

Publication number Publication date
DE2308404A1 (de) 1973-09-06
SE373332B (sv) 1975-02-03
SE373332C (sv) 1977-07-25
DE2308404B2 (de) 1977-10-20
DE2308404C3 (de) 1978-06-01

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