EP0387278B1 - Stülpfilterzentrifuge - Google Patents

Stülpfilterzentrifuge Download PDF

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Publication number
EP0387278B1
EP0387278B1 EP88910018A EP88910018A EP0387278B1 EP 0387278 B1 EP0387278 B1 EP 0387278B1 EP 88910018 A EP88910018 A EP 88910018A EP 88910018 A EP88910018 A EP 88910018A EP 0387278 B1 EP0387278 B1 EP 0387278B1
Authority
EP
European Patent Office
Prior art keywords
filling tube
centrifuge
drum
rotary
housing
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
EP88910018A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0387278A1 (de
Inventor
Hans Gerteis
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.)
Heinkel Industriezentrifugen GmbH and Co
Original Assignee
Heinkel Industriezentrifugen GmbH and Co
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 Heinkel Industriezentrifugen GmbH and Co filed Critical Heinkel Industriezentrifugen GmbH and Co
Publication of EP0387278A1 publication Critical patent/EP0387278A1/de
Application granted granted Critical
Publication of EP0387278B1 publication Critical patent/EP0387278B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge
    • 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 an inverting filter centrifuge with a drum which is supported in a housing so as to be rotatably supported and has radial filtrate passages, with a drum which can be displaced axially relative to the drum and whose free end face closes, with a filling opening provided on the cover for suspension to be filtered and with a fastening which is fastened to the housing on the one hand and on the other hand, the filling tube penetrating the filling opening, the outlet end of which is located inside the drum during the centrifuging process.
  • inverting filter centrifuge of this type which is used to separate solid and liquid components in suspension, is described in DE-C-27 10 624. It is also known to provide a splash guard which interacts with the outlet end of the filling tube at the filling opening of the lid (DE-A-34 30 507).
  • the filling tube for changing the pressure in the drum can be connected to a pressure or low pressure source and is sealed by means of a combined rotary and sliding seal on the cover.
  • the filling tube is supported on the housing in an elastic bearing which, in conjunction with the rotating and sliding seal, permits additional wobbling movements of the filling tube.
  • the filling pipe is simultaneously used as an inlet pipe for pressurized gas (steam) or for generating a negative pressure by pumping out, so that special supply lines are not required.
  • the combined rotary and sliding seal between the filling tube and the lid prevents the pressurized gas from escaping from the centrifugal chamber or the ingress of gas (atmospheric air) from the outside into the centrifugal chamber.
  • the elastic support of the filling tube on the housing compensates for tumbling movements of the drum due to imbalance, so that a perfect seal is ensured in operation by the combined rotary and sliding seal.
  • the sliding displacement of the lid relative to the filling pipe is not affected.
  • the step filter centrifuge shown in Figure 1 comprises a schematically indicated, the entire machine tightly enclosing housing 1, in which a hollow shaft 3 is rotatably mounted in bearings 4, 5 on a stationary machine frame.
  • a pressure medium cylinder 6 is flanged sealed to the end of the hollow shaft 3 located on the right in FIGS. 1 and 2 and projecting beyond the bearing 5.
  • a drive wheel 7 is rotatably connected, via which the cylinder 6 and thus the hollow shaft 3, z. B using of a V-belt can be put into rapid circulation by an electric motor (not shown).
  • the hollow shaft 3 which is rigidly continuous between the bearings 4, 5 has an axially directed keyway (not shown), in which a wedge piece 9 is axially displaceable.
  • This wedge piece 9 is rigid with a displaceable inside the hollow shaft 3.
  • Shaft 12 connected. The shaft 12 therefore rotates together with the hollow shaft 3, but is axially displaceable in the latter.
  • the wells 3 and 12 run in a socket-shaped housing 13 which also serves to hold the bearings 4, 5 and which is supported on the machine frame 2.
  • a pot-shaped centrifugal drum 16 is flange-mounted with its bottom 17 on the end of the hollow shaft 3 which is on the left in FIGS. 1 and 2 and projects beyond the bearing 4.
  • the drum 16 has radially extending passage openings 18 on its cylindrical side wall.
  • the drum 16 is open on its end face opposite the bottom 17.
  • the other edge of the filter cloth 22 is correspondingly tightly connected to a base piece 23 which is rigidly connected to the displaceable, displaceable shaft 12 which freely penetrates the bottom 17.
  • a centrifugal chamber cover 25 is rigidly attached to the base piece 23 by means of stud bolts 24, leaving a space free, which in FIG with the base piece 23 is lifted freely from the drum by axially sliding the shaft 12 out of the hollow shaft 3.
  • a filling tube 26 is arranged, which serves to supply a suspension to be broken down into its solid and liquid components into the centrifugal chamber of the drum 16 (FIG. 1) and in the operating state shown in FIG. 2 penetrates into a bore 27 of the displaceable shaft 12.
  • Lines 31 and valves 32, 33 which cooperate with the pressure medium cylinder 6 serve to reciprocate the displaceable shaft 12 which supports the drum 15.
  • the inverting filter centrifuge initially assumes the position shown in FIG. 1.
  • the displaceable shaft 12 is retracted into the hollow shaft 3 and the pressure medium cylinder 6, whereby the bottom piece 23 connected to the shaft 12 lies in the vicinity of the bottom 17 of the centrifugal drum 16 and the filter cloth 22 is turned inside the drum in such a way that it is inside lies.
  • the centrifugal chamber cover 25 has placed itself tightly on the opening edge of the drum 16.
  • suspension to be filtered is introduced via the filling tube 26.
  • the liquid constituents of the suspension pass through the openings 18 of the drum in the direction of the arrows 35 and are guided by a baffle plate 36 into a discharge line 37.
  • the solid particles of the suspension are stopped by the filter cloth 22.
  • the shaft 12 is now spared (to the left) according to FIG Solid particles are thrown outward in the direction of arrows 38 into the housing 1. From there they can be easily removed.
  • the filling tube 26 has penetrated into the bore 27 of the shaft 12 through openings 39, 40 which are provided in the cover 25 or in the base piece 23.
  • the filter centrifuge is brought back into the operating position according to FIG. 1 by pushing the shaft 12 back, the filter cloth 22 turning back in the opposite direction. In this way, operation of the centrifuge with a continuously rotating centrifugal drum 16 is possible.
  • a valve 41 is switched into the fill pipe 26, which interrupts the supply of suspension and seals the fill pipe to a storage vessel containing the suspension.
  • a gas in particular compressed air, can be introduced into the filling pipe 26 and thus into the centrifugal space of the drum 16 by means of a pump 44 via a pipe 42 with a shut-off valve 43 opening into the filling pipe 26.
  • the resulting internal pressure in the drum 16 increases the hydraulic pressure generated in the centrifugal force field of the rotating drum and thus has an overall beneficial effect on the filtration result.
  • the line 42 can be omitted.
  • the suspension is then, e.g. B. introduced via a pump, directly under pressure into the filling tube 26 and the drum 16.
  • this pressure can be the hydrostatic pressure which is generated in the filling tube 26 by a suspension storage vessel connected to it and arranged at a correspondingly high level.
  • a negative pressure instead of an excess pressure in the drum 16, for example by the pump 44 in FIG. 1 being designed as a suction pump.
  • Such a temporary negative pressure can, for example, have a favorable effect on the detachment of the filter cake from the filter cloth 22.
  • the filling tube 26 has at its front, free end a thickening 45 that tapers on both sides and is otherwise circular-cylindrical in shape.
  • a thickening 45 that tapers on both sides and is otherwise circular-cylindrical in shape.
  • elastic sealing rings 46 on the thickening, which impart a pressure-tight seal.
  • the sealing rings 46 are in turn inserted into corresponding grooves in a sleeve 47, which is held stationary together with the filling tube 26.
  • An elastic guide ring 48 and an elastic, ring-shaped wiper 49 are also arranged on the inner wall of the sleeve 47, wherein in the operating state according to FIG.
  • the sleeve 47 is rotatably supported by means of a pivot bearing 51, which is only indicated schematically, in a bushing 52 which is fixed to the cover 25 of the sleeve Drum 16 is connected.
  • a plurality of radial shaft sealing rings 53 are arranged between the (stationary) sleeve 47 and the (rotating) bushing 52.
  • the sealing rings 26 slide off the thickening 45 and reach the unthickened section of the filling tube 26, where they no longer perform a sealing function and enclose the filling tube 26 at a distance (see FIG. 5).
  • the thickening 45 thus has the effect that the elastic sealing rings 46 are not subjected to sliding friction over most of the sliding movement of the cover 25, which could lead to damage or destruction of these rings, in particular because the outer wall of the filling tube 26 is often covered with a thin layer of solid particles.
  • the annular scraper 49 which is equipped for this purpose with a sharp, free ring edge, engages on the outer wall of the filling tube 26 and strips off adhering solid particles, so that these subsequently become the No longer reach sealing rings 26.
  • the guide ring 48 centers the sleeve 47 and thus the sliding seals 46 relative to the thickening 45 and thereby prevents the sealing rings from being crushed and damaged.
  • the sealing arrangement described conveys a combined rotary and sliding seal, which makes the centrifugal space pressure-tight during the filtering process and subsequently enables the cover 25 to be displaced relative to the filling tube 26.
  • the cantilevered drum 16 leads during the rotation often wobble movements, which are transferred to the free end (thickening 45) of the filling tube 26.
  • it is elastically fastened to the front wall 54 of the housing 1 by means of an elastic, ring-shaped element 55 which surrounds the filling tube 26 and between the front wall 54 and a flange 56 fixedly connected to the filling tube 26 is arranged.
  • the elastic element 55 is in some meaningful manner, e.g. B. by gluing, on the one hand to the front wall 54 and on the other hand connected to the flange 56.
  • the thickening 45 at the front end of the filling tube 26 can easily follow the tumbling movements of the drum 16.
  • FIG. 4 shows a downward deflection of the filling tube 26 during such a wobbling movement in which the elastic element 55 and the elastic sealing rings 46 as well as the guide ring 48 and the wiper 49 deform accordingly.
  • the free end of the thickening 45 is designed as a scraping device 58.
  • the free front edge of the thickening is sharpened to form a ring cutter and z. B. four axially extending slots 59. If 12 solid particles have accumulated in the bore 27 of the shaft in the course of the filtration, which could impair the introduction of the filling tube 26, these are scraped off from the cutting edge-shaped leading edge of the thickening 45 so that they pass through the slots 59 into the interior of the filling tube 26 can occur. From there they are easily rinsed out when the suspension is added again.
  • a ventilation channel 61 is provided in the interior of the filling tube 26, for example in the form of a tube which protrudes slightly on the free front edge of the filling tube 26 and is connected to a line 62 at the opposite end.
  • the venting channel is open, at its opposite one. Closed end.
  • the line 62 is provided with a valve 63 which allows the line 62 to open to the atmosphere.
  • the described combined rotary and sliding seal 45, 46, 47, 53 can also be used without pressurizing the drum (via the filling tube 26), for example when a gap-free seal between the drum and the filling tube 26 is desired in the operating state according to FIG. 1 for other reasons is.

Landscapes

  • Centrifugal Separators (AREA)
EP88910018A 1987-11-28 1988-11-24 Stülpfilterzentrifuge Expired - Lifetime EP0387278B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3740411A DE3740411C2 (de) 1987-11-28 1987-11-28 Stülpfilterzentrifuge
DE3740411 1987-11-28

Publications (2)

Publication Number Publication Date
EP0387278A1 EP0387278A1 (de) 1990-09-19
EP0387278B1 true EP0387278B1 (de) 1992-03-04

Family

ID=6341496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88910018A Expired - Lifetime EP0387278B1 (de) 1987-11-28 1988-11-24 Stülpfilterzentrifuge

Country Status (8)

Country Link
US (1) US5092995A (ja)
EP (1) EP0387278B1 (ja)
JP (1) JP2662280B2 (ja)
KR (1) KR970004701B1 (ja)
DD (1) DD276037A5 (ja)
DE (1) DE3740411C2 (ja)
RU (1) RU1837990C (ja)
WO (1) WO1989005193A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705788C1 (de) * 1997-02-14 1998-07-30 Guenther Hultsch Diskontinuierlich arbeitende Filterzentrifuge

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916266C1 (ja) * 1989-05-19 1990-08-30 Heinkel Industriezentrifugen Gmbh + Co, 7120 Bietigheim-Bissingen, De
US5304306A (en) * 1990-09-24 1994-04-19 Heinkel Industriezentrifugen Gmbh & Co. Reverse filter centrifuge
RU2081708C1 (ru) * 1991-05-04 1997-06-20 Хейнкель Индустрицентрифуген ГмбХ унд Ко Центрифуга с выворачиваемым фильтром
DE4230261A1 (de) * 1991-10-01 1993-04-08 Krauss Maffei Ag Diskontinuierlich arbeitende filterzentrifuge
DE4316081C1 (de) * 1993-05-13 1994-08-04 Heinkel Ind Zentrifugen Vorrichtung zur Durchführung einer Gewichtsmessung bei Zentrifugen
DE4337618C1 (de) * 1993-11-04 1995-02-16 Krauss Maffei Ag Stülpfilterzentrifuge (Trommelraumabdichtung)
DE19525567A1 (de) * 1995-07-13 1997-01-16 Krauss Maffei Ag Stülpfilterzentrifuge
DE19529256A1 (de) * 1995-08-09 1996-08-22 Heinkel Ind Zentrifugen Verfahren und Vorrichtung zum Reinigen der Schleudertrommel und des Filtertuches an einer Stülpfilterzentrifuge
DE19537562A1 (de) * 1995-10-09 1997-04-10 Baumann Schilp Lucia Gehäusedichtung für Entwässerungseinrichtung
DE19542763C1 (de) * 1995-11-16 1996-10-31 Heinkel Ind Zentrifugen Stülpfilterzentrifuge
DE19646038C2 (de) 1996-11-08 1998-08-06 Heinkel Ind Zentrifugen Stülpfilterzentrifuge
DE19732006C1 (de) * 1997-07-25 1998-11-19 Heinkel Ind Zentrifugen Vorrichtung zur Durchführung einer Gewichtsmessung bei Zentrifugen
US6440316B1 (en) * 2000-03-21 2002-08-27 Virginia Tech Intellectual Properties, Inc. Methods of improving centrifugal filtration
DE10115381A1 (de) * 2001-03-28 2002-10-24 Heinkel Ag Stülpfilterzentrifuge
CN100434186C (zh) * 2006-10-16 2008-11-19 张鹤鸣 翻袋式过滤离心机
DE102007017982A1 (de) 2007-04-05 2008-10-09 Heinkel Process Technology Gmbh Zentrifugenvorrichtung
DE102011010072B4 (de) 2011-02-01 2013-08-22 Contecma C. S. Gmbh Stülpfilterzentrifuge
CN103977915A (zh) * 2014-05-28 2014-08-13 中国矿业大学 一种细粒物料离心过滤脱水装置
US10975369B2 (en) 2017-02-27 2021-04-13 Translate Bio, Inc. Methods for purification of messenger RNA
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
KR102504657B1 (ko) * 2019-11-18 2023-02-27 주식회사 엘지화학 가압 원심 탈수기
CA3197638A1 (en) 2020-10-01 2022-04-07 Translate Bio, Inc. Methods for purification of messenger rna

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DE1023728B (de) * 1955-04-15 1958-01-30 Westfalia Separator Ag Manschettendichtung fuer geschlossene Separatoren
DE1911147A1 (de) * 1969-03-05 1970-11-19 Ernst Heinkel Maschb Gmbh Zentrifuge
US3795361A (en) * 1972-09-06 1974-03-05 Pennwalt Corp Centrifuge apparatus
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
US4300717A (en) * 1979-04-02 1981-11-17 Haemonetics Corporation Rotary centrifuge seal
DK157121C (da) * 1981-05-06 1990-04-16 Lildal A S J Centrifuge til udvinding af proteiner fra knogler
SE449951B (sv) * 1983-03-16 1987-06-01 Alfa Laval Ab Centrifugalseparator med central slamutmatning
US4502699A (en) * 1983-05-16 1985-03-05 E. I. Du Pont De Nemours And Company Rotating seal for continuous flow centrifuge
DE3430507A1 (de) * 1984-08-18 1986-02-27 Heinkel Industriezentrifugen GmbH + Co, 7120 Bietigheim-Bissingen Filterzentrifuge
DE3516819C2 (de) * 1985-05-10 1994-01-20 Heinkel Ind Zentrifugen Auspreßfilter für Suspensionen
EP0215418B1 (de) * 1985-09-16 1991-08-21 DrM.Dr. Hans Müller AG Klär-Filter-Zentrifuge und Verfahren zum Trennen von Suspensionen
US5004540A (en) * 1989-12-01 1991-04-02 Ketema Process Equipment Division Invertible filter-type centrifuge with improved bearing and seal assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705788C1 (de) * 1997-02-14 1998-07-30 Guenther Hultsch Diskontinuierlich arbeitende Filterzentrifuge

Also Published As

Publication number Publication date
KR890701217A (ko) 1989-12-19
JP2662280B2 (ja) 1997-10-08
US5092995A (en) 1992-03-03
DE3740411A1 (de) 1989-06-08
DD276037A5 (de) 1990-02-14
RU1837990C (ru) 1993-08-30
EP0387278A1 (de) 1990-09-19
KR970004701B1 (ko) 1997-04-02
WO1989005193A1 (en) 1989-06-15
DE3740411C2 (de) 1996-11-14
JPH03501228A (ja) 1991-03-22

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