EP1485205B1 - Schneckenzentrifuge - Google Patents

Schneckenzentrifuge Download PDF

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Publication number
EP1485205B1
EP1485205B1 EP03709804A EP03709804A EP1485205B1 EP 1485205 B1 EP1485205 B1 EP 1485205B1 EP 03709804 A EP03709804 A EP 03709804A EP 03709804 A EP03709804 A EP 03709804A EP 1485205 B1 EP1485205 B1 EP 1485205B1
Authority
EP
European Patent Office
Prior art keywords
ring
screw
rotor
type centrifuge
centrifuge according
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 - Lifetime
Application number
EP03709804A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1485205A1 (de
Inventor
Frank Gillengerten
Günter Haider
Robert Wagenbauer
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.)
Hiller GmbH
Original Assignee
Hiller GmbH
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 Hiller GmbH filed Critical Hiller GmbH
Publication of EP1485205A1 publication Critical patent/EP1485205A1/de
Application granted granted Critical
Publication of EP1485205B1 publication Critical patent/EP1485205B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2041—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with baffles, plates, vanes or discs attached to the conveying screw

Definitions

  • the invention relates to a screw centrifuge for wet-mechanical separation of solid mixtures according to the preamble of patent claim 1.
  • Such a wet centrifuge is known, for example, from US Pat. No. 5,342,281.
  • One of the two counter-rotating screws of the screw feeds the product to be dumped to the drum casing of the rotor to the discharge openings formed at one end of the rotor, while the other screw conveys the floating product onto the carrier liquid.
  • An attached to the shaft of the auger baffle plate is used to prevent uncontrolled back mixing of the floating material with the debris.
  • the liquid level of the carrier liquid is constant over the entire rotor length.
  • the invention has for its object to provide a screw centrifuge of the type specified in the preamble of claim 1 available, in which it is possible to achieve independent moisture content for the sinker and for the floating.
  • this object is achieved in that a radially inwardly projecting stagnation device for generating a different liquid level for the Sinkgut and the floating is arranged on the rotor, wherein the storage device comprises a storage ring, which leaves an annular gap to the shaft of the screw conveyor ,
  • a sorting decanter is available, which is composed practically of two coupled decanters, wherein in a decanter the heavier Sinkgut is discharged, while in the other decanter the lighter float is secreted.
  • the two decanters are delimited from each other by the inwardly projecting stowage device.
  • the screw centrifuge according to the invention is particularly suitable for separating plastics of different density, which are suspended in the carrier liquid, for example PVC or PA and PP.
  • the storage device has at least one overflow pipe for the carrier liquid in the conveying direction for the floating material behind the storage ring, the radially inwardly facing inlet opening leaves a distance from the shaft of the screw conveyor.
  • the overflow pipe for adjusting the distance is radially adjustable. In this way, the liquid level in the area of the screw for the discharge of the floating material can be adjusted, whereby the length of the drying section for the floating material before discharge and thus the residual moisture content of the floating material can be specified.
  • the storage ring has a longitudinal section U-shaped, the overflow tube encompassing gutter profile consisting of a fixed to the rotor wall, radial ring, a groove profile base forming transition piece and an adjoining barrier wall whose free end a small radial distance leaves free to the rotor wall.
  • the storage ring is assigned means for adjusting the annular gap.
  • a longer drying section here also means a longer residence time before the discharge and thus a lower residual moisture content of the sinking material.
  • the screw centrifuge has a rotor 10 composed of a central cylindrical drum 12 and two conical drums 14 and 16 fixedly connected thereto.
  • a pulley 20 for the rotary drive of the rotor 10 about its horizontal axis 24 and a gear 22 are indicated.
  • a screw conveyor 26 is mounted, which is driven via the gear 22 with respect to the rotor 10 different speed about the same axis 24.
  • the screw conveyor 26 consists of a hollow shaft 28, on which two counter-rotating screws 30 and 32 are mounted.
  • the helixes 34 of each of the two screws 30, 32 have openings 36 in the region of the shaft 28.
  • discharge openings 42 are provided for the light phase (floating), which are incorporated annularly in the drum wall.
  • Corresponding discharge openings 44 for the heavy phase (sinking material) are incorporated in the end of the opposite conical drum 16.
  • baffle plate 46 is attached in the region of the cylindrical drum 12, which prevents back mixing of the floating material with the suspension.
  • a radially inwardly projecting stowage device 48 is fixed to the rotor 10, which is arranged in the embodiments at the transition of the cylindrical drum 12 in the left in Figure 1 conical drum 14.
  • the storage device 48 causes in the manner explained below, that for the floating material, which is discharged via the discharge openings 42, a different liquid level 50 is generated than for the material to be doused (liquid level 52), via the discharge openings 44 is segregated at the right end of the rotor 10.
  • the storage device 48 consists of a total designated 54 storage ring, which has a longitudinal section U-shaped channel profile.
  • This gutter profile is composed of a ring 56 which is fixed to the rotor wall 58 and projects radially inwardly from this, forming a groove profile base, axial transition piece 60 and an adjoining barrier wall 62 which projects obliquely from the transition piece 60.
  • an annular gap 64 is present between the transition piece 60 and the shaft 28 of the screw 30, an annular gap 64 is present.
  • the free end of the barrier wall 62 leaves a small radial distance 66 to the rotor wall 58 free.
  • FIGs 2 and 3 show that in the region of the storage ring 54 on the rotor wall 58 four overflow pipes 68 are mounted, which open with their radially inwardly facing inlet openings 70 in the U-shaped channel profile of the storage ring 54.
  • the overflow pipes 68 are adjustable by means not shown in the radial direction, which is indicated in Figures 2, 4, 6 and 8 by double arrows.
  • the storage ring 54 is firmly connected to the rotor wall 58 and has a bevel 72 in the area between the ring 56 and the transition piece 60.
  • the suspension to be separated passes via the openings 40 of the hollow shaft 28 into the region of the cylindrical drum 12, where the liquid level 52 is determined by the annular gap 64, ie by the distance of the Transition piece 60 from the shaft 28 of the auger 26.
  • the specific heavier solid particles are thrown against the rotor wall 58 due to the centrifugal force exerted by the rotor 10, while the specific lighter Floating solid particles on the surface of the liquid level 52.
  • the screw 32 transports the heavy phase (sinking material) in Figure 1 to the right in the direction of the discharge openings 44.
  • a more or less long drying section 74 is formed depending on the liquid level 52, at the beginning of the solid parts of the Screw 32 lifted from the carrier liquid and conveyed along this drying section 74 to the discharge openings 44.
  • the specifically lighter floating material which floats on the liquid level 52, is conveyed via the radially smaller screw 30 in the opposite direction to the annular gap 64, wherein the bevel 72 of the retaining ring 54 supports the overflow of the floating material in the left conical drum 14.
  • the liquid level 50 depends on the distance between the inlet opening 70 of the overflow tubes 68 and the shaft 28 of the screw conveyor 26.
  • the overflow pipes 68 starting from the example of Figure 2
  • the overflow pipes 68 are adjusted radially outward, a portion of the carrier liquid flows through the overflow pipes 68 to the outside until the new liquid level 50 is reached.
  • the drying distance 76 in the conical drum 14 on the left in FIG. 1 is increased. Conversely, this drying distance 76 is reduced when the overflow tubes 68 are adjusted radially inwards.
  • the distance 66 between the barrier wall 62 and the rotor wall 58 prevents floats suspended in the carrier liquid from passing through the overflow tubes 68 to the outside.
  • the annular gap 64 is closed by a shutter 78 which has an integrally formed with the ring 56 aperture ring 80 which extends from the ring 56 radially to the outer surface of the shaft 28 of the screw conveyor 26.
  • the openings can be increased or reduced by weir plates 84.
  • the weir plates 84 are radially adjustable by means not shown from the outside, so that through the radial inner edge of the weir plates 84 of the liquid level 52 in the cylindrical drum 12 and in the right conical drum 16 is determined.
  • the diaphragm 78 consists of two mutually rotatable annular discs, namely the fixed here also with the ring 56 diaphragm ring 80 and an overflow in front lying annular disc 86 which is coupled in a manner not shown with the screw conveyor 30 and with this orbiting.
  • the aperture ring 80 overflow window 82;
  • Similar overflow windows 88 are incorporated into the annular disk 86 rotating with the worm 30, whereby during the rotation of the worm 30 the floating material flows in a pulsing manner through the annular gap 64 into the conical drum 14.
  • the diaphragm 78 also consists of two mutually rotatable annular discs, namely the diaphragm ring 80 and the axially forward in the conveying direction annular disc 86 which is attached to the ring 56. Both discs have at their radial inner edge overflow window 82, 88, which are triangular in this case and determine depending on their overlap the flow opening for the Weggut in the conical drum 14.
  • the annular disc 86 can be adjusted against the diaphragm ring 80, which is already done during assembly of the centrifuge. Alternatively, it is also possible, via not shown controls, the annular disk 86 to rotate from the outside in the circumferential direction to adjust the size of the overflow windows 82, 88 according to the respective requirements.

Landscapes

  • Centrifugal Separators (AREA)
EP03709804A 2002-03-20 2003-03-20 Schneckenzentrifuge Expired - Lifetime EP1485205B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10212187A DE10212187A1 (de) 2002-03-20 2002-03-20 Schneckenzentrifuge
DE10212187 2002-03-20
PCT/EP2003/002907 WO2003078070A1 (de) 2002-03-20 2003-03-20 Schneckenzentrifuge

Publications (2)

Publication Number Publication Date
EP1485205A1 EP1485205A1 (de) 2004-12-15
EP1485205B1 true EP1485205B1 (de) 2007-05-16

Family

ID=27797922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03709804A Expired - Lifetime EP1485205B1 (de) 2002-03-20 2003-03-20 Schneckenzentrifuge

Country Status (12)

Country Link
US (1) US7153255B2 (ja)
EP (1) EP1485205B1 (ja)
JP (1) JP4575668B2 (ja)
CN (1) CN1305578C (ja)
AT (1) ATE362399T1 (ja)
AU (1) AU2003214143A1 (ja)
CA (1) CA2479658C (ja)
DE (2) DE10212187A1 (ja)
ES (1) ES2287450T3 (ja)
PT (1) PT1485205E (ja)
RU (1) RU2315664C2 (ja)
WO (1) WO2003078070A1 (ja)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10212187A1 (de) * 2002-03-20 2003-10-02 Hiller Gmbh Schneckenzentrifuge
DE102005025784A1 (de) * 2005-06-04 2006-12-07 Hiller Gmbh Schneckenzentrifuge
US8038870B2 (en) * 2008-09-09 2011-10-18 The Western States Machine Company Centrifuges with rotating feed pipes
CN101607231B (zh) * 2009-06-29 2011-05-11 杭州银星机械有限公司 卧螺离心机
SE534386C2 (sv) * 2009-10-29 2011-08-02 Alfa Laval Corp Ab Centrifugalseparator samt metod för separering av fasta partiklar
US10525389B2 (en) 2012-01-16 2020-01-07 Jk Industries, Llc Sludge concentrator assembly with varying first stage separator, combined with a second stage, clean flow outlet incorporating fixed and variable flow restrictor orifices
US9233866B2 (en) 2012-01-16 2016-01-12 Jk Industries, Llc Sludge concentrator assembly incorporating upper centrifugal separator and lower barrier filter and exhibiting high flow velocity clean fluid outlet combined with low flow velocity solid entrapment
DE102012102478A1 (de) * 2012-03-22 2013-09-26 Hiller Gmbh Vollmantel-Schneckenzentrifuge
ES2774429T3 (es) * 2014-03-14 2020-07-21 Andritz Sas Centrífuga de decantación
CN105170342A (zh) * 2015-09-06 2015-12-23 广州金康源环保设备有限公司 一种卧螺离心机
CN105413893A (zh) * 2015-12-15 2016-03-23 宜兴市华鼎粮食机械有限公司 一种新型出液的卧式螺旋离心机转鼓
AT518275B1 (de) * 2016-04-26 2017-09-15 Andritz Tech And Asset Man Gmbh Schneckenzentrifuge zur nassmechanischen trennung von feststoffen
WO2018136021A1 (ru) * 2017-01-23 2018-07-26 Георгий ТРОШИН Осадительная центрифуга
RU207029U1 (ru) * 2021-03-30 2021-10-07 Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Шнек осадительной центрифуги
RU207203U1 (ru) * 2021-03-30 2021-10-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Шнек осадительной центрифуги
RU207028U1 (ru) * 2021-03-30 2021-10-07 Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Шнек осадительной центрифуги
RU207445U1 (ru) * 2021-04-30 2021-10-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Шнек центрифуги для разделения суспензий
RU207201U1 (ru) * 2021-04-30 2021-10-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Шнек центрифуги для разделения суспензий
RU207202U1 (ru) * 2021-04-30 2021-10-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Шнек центрифуги для разделения суспензий

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Also Published As

Publication number Publication date
CA2479658C (en) 2010-01-12
EP1485205A1 (de) 2004-12-15
US7153255B2 (en) 2006-12-26
CN1305578C (zh) 2007-03-21
JP4575668B2 (ja) 2010-11-04
ES2287450T3 (es) 2007-12-16
WO2003078070A1 (de) 2003-09-25
JP2005520674A (ja) 2005-07-14
DE50307292D1 (de) 2007-06-28
AU2003214143A1 (en) 2003-09-29
PT1485205E (pt) 2007-08-23
DE10212187A1 (de) 2003-10-02
RU2315664C2 (ru) 2008-01-27
US20050107236A1 (en) 2005-05-19
RU2004130860A (ru) 2005-05-20
CA2479658A1 (en) 2003-09-25
ATE362399T1 (de) 2007-06-15
CN1655872A (zh) 2005-08-17

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