EP0535427B1 - Diskontinuierlich arbeitende Filterzentrifuge - Google Patents

Diskontinuierlich arbeitende Filterzentrifuge Download PDF

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Publication number
EP0535427B1
EP0535427B1 EP92115644A EP92115644A EP0535427B1 EP 0535427 B1 EP0535427 B1 EP 0535427B1 EP 92115644 A EP92115644 A EP 92115644A EP 92115644 A EP92115644 A EP 92115644A EP 0535427 B1 EP0535427 B1 EP 0535427B1
Authority
EP
European Patent Office
Prior art keywords
drum
filter bag
centrifuge according
filtering centrifuge
base
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
EP92115644A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0535427A3 (en
EP0535427A2 (de
Inventor
Günther Hultsch
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.)
HULTSCH, GUENTHER
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 EP0535427A2 publication Critical patent/EP0535427A2/de
Publication of EP0535427A3 publication Critical patent/EP0535427A3/de
Application granted granted Critical
Publication of EP0535427B1 publication Critical patent/EP0535427B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges
    • B04B3/025—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges with a reversible filtering device

Definitions

  • the invention relates to a discontinuously operating filter centrifuge according to the preamble of patent claim 1.
  • an inverting filter centrifuge e.g. is known from DE 27 09 894 A1
  • the broaching of the drum is automated with a filter bag.
  • an additional, axially displaceable bottom is arranged in the drum and connected by bolts to a cover for closing the filtration space.
  • the bottom with the lid is moved so far into the solid housing that the filter bag is turned inside out.
  • the filter bag is attached with its rear end to the sliding floor and with a drum jacket.
  • the sealable bottom for turning the filter bag inside out has to be pushed out of the drum by twice its length.
  • the material of the filter bag can be subjected to high mechanical loads. Because the stroke length of the everting device is twice the useful length of the filter bag, inverting filter centrifuges are relatively long in relation to the effective useful length of the filter bag.
  • the invention has for its object to provide a filter centrifuge of the type described, which is shorter in relation to the useful length of the filter bag and in which the drum interior is visible when the filter bag is extended.
  • the centrifuge then essentially consists of the bearing (1), the hollow shaft (2) with drum (3) and the axially displaceable core shaft (4).
  • the base (5) is fastened and connected to the cover (7) via bolts (6), on the circumference of which there is a flat sealing ring (8) which is held by a washer (9) .
  • the filter bag (11) is fixed to the bottom (5) with a ring (13), the conicity of which corresponds to that of the drum jacket.
  • the jacket of the drum (3) is provided on the inside with grooves (12) running in the direction of its jacket lines and with filtrate bores (14).
  • the housing (17) receives a bushing (15) for the filling pipe (16) and is divided into the filtrate chamber (18) and the solids chamber (19).
  • the housing (17) is mounted together with the bearing (1) on the base plate (20).
  • Fig. 2 shows the drum (3) with the bottom (5) and the lid (7) when clearing the filter cake, supported by a tool (21) pressed against the filter bag (11).
  • Fig. 3 shows the empty filter bag (11) before re-entering the drum (3).
  • Fig. 4 shows a filter bag (11) pushed further out of the drum (3).
  • the sealing ring (8) is preceded by a round sealing ring (22) on the cover (7), which seals against the metallic inner surface (24) of the drum (3).
  • the sealing ring (8) is designed on its circumference as a round ring (28) and according to Fig. 7 as a hose (29) which can be filled with liquid (30).
  • FIGS. 8 and 9 show a section and a top view of a filter bag (11) which is composed of sections (10) which are connected to one another by seams (25).
  • the seams (25) are shorter than the sections (10), so that there are seamless areas at the clamping end (26) and at the sealing end (27).
  • the drive and the device for axially displacing the base (5) are not shown in the drawings.
  • the axial displacement can be carried out using known means, e.g. pressurized pistons or lead screws.
  • the filter centrifuge shown in the drawings works as follows: First the drum (3) with its internals is accelerated to filling speed. The centrifugal force places the filter bag (11) on the drum jacket and the elastic sealing ring (8) is stretched and pressed against the open end of the filter bag. Now the drum (3) closed by the cover (7) is charged with suspension through the filling tube (16). After the filter cake has been formed, a liquid or vapor washing medium can be refilled. The washing is followed by the dry spin cycle, which can be intensified by adding compressed gas or dry steam. After dry spinning, the speed is reduced to a low centrifugal acceleration of, for example, 0 to 30 m / s2. As a result, the sealing ring (8) contracts again and lifts off the filter bag (11).
  • the core shaft (4) as shown in Fig. 2 with the bottom (5), the lid (7), the filter bag (11) and on it filter cake is pushed out of the drum.
  • the part of the filter bag (11) pushed out can bend downwards under the influence of gravitational acceleration, so that the filter cake crumbles and falls out of the solids chamber (19).
  • the drum speed should be as low as possible so that the housing wall is not contaminated.
  • the filter cake can be cleared by a tool (21) pressed against the filter bag, e.g. a skid or roller is supported.
  • the filter bag (11) is deformed all round and emptied intensively.
  • the filter bag (11) can also be moved back and forth several times under the tool (21), the tool can be set in vibration and a roller serving as a tool can be eccentrically mounted or profiled in order to generate vibrations. It is also possible to use several tools which are arranged offset on the circumference and / or in the axial direction.
  • the drum speed can be increased to such an extent that the filter bag (11) assumes an arched, barrel-shaped shape according to Fig. 3.
  • a centrifugal acceleration of, for example, 50 to 100 m / s2m is sufficient for this, which places little mechanical strain on the fabric of the filter bag (11).
  • the filter bag (11) lies against the inner surface of the drum shell and retains its original shape and length.
  • a slight taper of the drum (3) makes it easier to push in and out.
  • a support for the filter bag (11), for example a slotted sieve with coaxial gaps, can be inserted into the drum jacket or the drum jacket is provided with grooves (12) between which the filtrate flows to the filtrate bores (14).
  • a seal or rotary feedthrough can be arranged between the filling pipe (16) and the cover (7), which closes the filtration space in a pressure-tight manner, so that a gaseous or vaporous pressure medium can be supplied through the filling pipe (16) for simultaneous pressure and centrifugal filtration.
  • the core shaft (4) it is also advantageous to design the core shaft (4) so that it can be pushed out of the drum (3) in such a way that the bottom (5) gives access to the interior of the drum (3) so that it can be inspected and cleaned using known means. In this position, the filter bag (11) can also be replaced if necessary.
  • an additional round sealing ring (22) can be arranged in front of the rotatable sealing ring (8), which additionally seals the inner drum surface (24) before the end of the filter bag (11). This prevents filtrate, which drains through the cloth material under the sealing ring (8), from entering the solids chamber (19).
  • the inner drum surface (24) for supporting the round sealing ring (22) can be cylindrical or even conical in opposite directions.
  • the cover (7) can have a stop ring (23) which fixes the position of the seals (8, 22).
  • the filter bag (11) may only have a small diameter tolerance in relation to its contact surface in the sealing area. Because this is difficult to maintain during production, it is recommended to assemble it from sections (10) with overlaps, the seams (25) being shorter than the sections (10), so that the diameter in the sealing area (27) exactly matches the diameter of the Adjusting the contact surface.
  • the clamping area (26) can also be seamless in order to facilitate the adaptation to a ring (13) for clamping.

Landscapes

  • Centrifugal Separators (AREA)
EP92115644A 1991-10-01 1992-09-12 Diskontinuierlich arbeitende Filterzentrifuge Expired - Lifetime EP0535427B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4132715 1991-10-01
DE4132715 1991-10-01

Publications (3)

Publication Number Publication Date
EP0535427A2 EP0535427A2 (de) 1993-04-07
EP0535427A3 EP0535427A3 (en) 1993-12-22
EP0535427B1 true EP0535427B1 (de) 1996-04-10

Family

ID=6441932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115644A Expired - Lifetime EP0535427B1 (de) 1991-10-01 1992-09-12 Diskontinuierlich arbeitende Filterzentrifuge

Country Status (4)

Country Link
US (1) US5306423A (enrdf_load_stackoverflow)
EP (1) EP0535427B1 (enrdf_load_stackoverflow)
JP (1) JPH05192606A (enrdf_load_stackoverflow)
DE (2) DE4230261A1 (enrdf_load_stackoverflow)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4337619C2 (de) * 1993-11-04 1998-04-30 Krauss Maffei Ag Stülpfilterzentrifuge (Filtermittelstützung)
DE4443777A1 (de) * 1994-12-08 1996-06-13 Krauss Maffei Ag Diskontinuierlich arbeitende Filterzentrifuge
US5728040A (en) * 1996-09-09 1998-03-17 Schill Enterprises, Inc. Variable volume cell saver bowl
US5954071A (en) * 1997-01-15 1999-09-21 Magliocca; Charles Thomas Parts washing apparatus with centrifugal filter
EP1214981B1 (en) * 1999-06-02 2005-12-21 Toyo Kasei Kogyo Company Limited Centrifugal separator
US6440316B1 (en) * 2000-03-21 2002-08-27 Virginia Tech Intellectual Properties, Inc. Methods of improving centrifugal filtration
DE10228231C1 (de) * 2002-06-25 2003-11-27 Gft Trenntechnik Werner Puetz Schubbeutel-Zentrifuge (Waschung des Filterbeutels)
ES2619155T3 (es) * 2005-11-18 2017-06-23 Ferrum Ag Cartucho de centrífuga
DE102006009200A1 (de) * 2006-02-22 2007-08-30 Fima Maschinenbau Gmbh Verfahren für den Betrieb einer Zentrifuge
US9126233B2 (en) * 2009-11-27 2015-09-08 Arrowcorp Inc. Cylinder exchange device and method for solid material processor
CN103100491B (zh) * 2012-12-14 2014-07-16 浙江轻机离心机制造有限公司 一种推料离心机转鼓上的推料片
CN104028390B (zh) * 2014-06-17 2016-06-01 苏州星亿机械有限公司 拉袋式离心机中的拉袋装置
CN106733237A (zh) * 2016-12-30 2017-05-31 连云港双惠机械有限公司 离心机气缸振动自动卸料装置
CA172569S (en) 2017-01-16 2018-02-08 Arrowcorp Inc Grading cylinder
MA47606A (fr) 2017-02-27 2021-04-07 Translate Bio Inc Procédés de purification d'arn messager
CN106964500A (zh) * 2017-04-14 2017-07-21 安徽普源分离机械制造有限公司 一种紧凑型自清洁离心机
JP2021506576A (ja) * 2017-12-19 2021-02-22 ゼロス リミテッド 処理装置のためのろ過器
CN109731703B (zh) * 2019-01-24 2023-10-27 张家港市永达机械制造有限公司 离心机的拉袋抻拉结构及采用该抻拉结构的拉袋离心机
KR102504657B1 (ko) * 2019-11-18 2023-02-27 주식회사 엘지화학 가압 원심 탈수기
RU2746866C1 (ru) * 2020-08-11 2021-04-21 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Автоматизированная центрифуга кислотоотжима для производства нитратов целлюлозы
WO2022072836A2 (en) 2020-10-01 2022-04-07 Translate Bio, Inc. Methods for purification of messenger rna
CN113171886A (zh) * 2021-04-06 2021-07-27 湖北雪飞化工有限公司 一种用于硝化棉生产的翻袋离心机
CN118493126A (zh) * 2024-07-19 2024-08-16 湘潭优合新材料科技有限公司 一种块状研磨用粉尘清理的循环式集尘装置
CN119140436B (zh) * 2024-11-14 2025-01-10 安徽旭晶媒美新材料科技有限公司 一种氯化铜干法制备用过滤装置及其过滤方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1292758A (en) * 1918-04-12 1919-01-28 Roque Galguera Y Gonzalez Filtering apparatus.
US2688436A (en) * 1952-09-11 1954-09-07 Standard Oil Co Extensible gasket for centrifuge bowls
DE1432812A1 (de) * 1964-06-19 1969-08-28 Ernst Heinkel Maschb Gmbh Zentrifuge
US3438500A (en) * 1967-05-18 1969-04-15 Francisco A Pico Centrifugal separating apparatus
DE1911147A1 (de) * 1969-03-05 1970-11-19 Ernst Heinkel Maschb Gmbh Zentrifuge
DE2709894C3 (de) * 1977-03-08 1982-01-07 Heinkel Industriezentrifugen GmbH & Co, 7120 Bietigheim-Bissingen Diskontinuierliche Filterzentrifuge
DE2710624C2 (de) * 1977-03-11 1985-09-19 Heinkel Industriezentrifugen GmbH + Co, 7120 Bietigheim-Bissingen Stülpfilterzentrifuge
DE3106022A1 (de) * 1981-02-19 1982-09-09 Heinkel Industriezentrifugen GmbH + Co, 7120 Bietigheim-Bissingen Filterzentrifuge
DE3430507A1 (de) * 1984-08-18 1986-02-27 Heinkel Industriezentrifugen GmbH + Co, 7120 Bietigheim-Bissingen Filterzentrifuge
DE3520134C2 (de) * 1985-06-05 1994-02-24 Heinkel Ind Zentrifugen Stülpfilter-Zentrifuge
US4944874A (en) * 1986-12-12 1990-07-31 Kabushiki Kaisha Okawara Seisakusho Centrifugal separator
DE3740411C2 (de) * 1987-11-28 1996-11-14 Heinkel Ind Zentrifugen Stülpfilterzentrifuge
DE3916266C1 (enrdf_load_stackoverflow) * 1989-05-19 1990-08-30 Heinkel Industriezentrifugen Gmbh + Co, 7120 Bietigheim-Bissingen, De
US5004540A (en) * 1989-12-01 1991-04-02 Ketema Process Equipment Division Invertible filter-type centrifuge with improved bearing and seal assembly
DK0551252T3 (da) * 1990-09-24 1995-08-21 Heinkel Ind Zentrifugen Omkrængefiltercentrifuge

Also Published As

Publication number Publication date
DE4230261A1 (de) 1993-04-08
EP0535427A3 (en) 1993-12-22
DE59205944D1 (de) 1996-05-15
EP0535427A2 (de) 1993-04-07
DE4230261C2 (enrdf_load_stackoverflow) 1993-07-22
US5306423A (en) 1994-04-26
JPH05192606A (ja) 1993-08-03

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