EP0215418A2 - Centrifugeuse clarificatrice et filtrante et procédé de séparation de suspensions - Google Patents

Centrifugeuse clarificatrice et filtrante et procédé de séparation de suspensions Download PDF

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Publication number
EP0215418A2
EP0215418A2 EP86112417A EP86112417A EP0215418A2 EP 0215418 A2 EP0215418 A2 EP 0215418A2 EP 86112417 A EP86112417 A EP 86112417A EP 86112417 A EP86112417 A EP 86112417A EP 0215418 A2 EP0215418 A2 EP 0215418A2
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EP
European Patent Office
Prior art keywords
centrifuge according
filter centrifuge
filter
clarifying
drum
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.)
Granted
Application number
EP86112417A
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German (de)
English (en)
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EP0215418A3 (en
EP0215418B1 (fr
Inventor
Wilfried Flory
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.)
Dr Mueller AG
Original Assignee
Dr Mueller AG
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Filing date
Publication date
Application filed by Dr Mueller AG filed Critical Dr Mueller AG
Priority to AT86112417T priority Critical patent/ATE66392T1/de
Publication of EP0215418A2 publication Critical patent/EP0215418A2/fr
Publication of EP0215418A3 publication Critical patent/EP0215418A3/de
Application granted granted Critical
Publication of EP0215418B1 publication Critical patent/EP0215418B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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

Definitions

  • Clarifier filter centrifuge with a closed drum, which is driven by a shaft and which has a filter medium (34) in a lid with filtrate drain openings perpendicular to the axis of rotation of the shaft, and a method for separating suspensions with the clarifier filter centrifuge.
  • centrifuges There are generally two types of centrifuges, solid bowl centrifuges and filter centrifuges.
  • Solid bowl centrifuges are preferably used to clarify liquids.
  • the heavy phase sediments in them and collects on the drum wall.
  • the lighter phase i.e. the liquid, flows out via an overflow weir.
  • the liquid flows out through a filter cake and a filter medium.
  • These centrifuges are preferably used to dehumidify easily filterable sludges.
  • the special feature of the clarifying filter centrifuge is that it both sediments and filters. If a centrifugate that is as solid as possible is desired, for example in solvent recovery and if the suspensions are difficult to filter, the clarifying filter centrifuge is the preferred choice, especially if the use of flocculants is undesirable or has to be avoided for reasons of cost, because these would influence a subsequent chemical process, for example.
  • centrifuge of this type for suspensions that are difficult to filter.
  • the separation process is characterized by the overlay of two different separation processes. Liquid and solids are separated by sedimentation and filtration.
  • This centrifuge essentially consists of two plate-shaped bodies, preferably parallel to one another and firmly connected to the rotating axis, which are closed at the periphery by a tubular body in such a way that they form a cavity for receiving the suspension.
  • a separating insert consisting of a membrane, which is fastened to a carrier body by conical rings, is fastened to the annular front chamber wall perpendicular to the axis of rotation.
  • the ring-shaped front wall is attached to the rear wall of the chamber by means of three bolts that are inserted in protective sleeves.
  • the suspension flows through an inlet pipe to a distributor cone, which accelerates the suspension and guides it along the rear wall. Suspension is added until the liquid level reaches the bolts.
  • the full casing is moved to unload the solids via pneumatic cylinders, which transfer the displacement force from the stationary outer system to the rotating system via a ball bearing.
  • the closing force required to hold the centrifuge closed when spinning is also applied via these cylinders.
  • Another variant is used: vacuum and compressed air, which are fed in to close or open the centrifuge via the centrifuge shaft of the chamber between the rear wall of the chamber and the drum base.
  • the filter medium Due to the conical design of the clamping point and the clamping rings of the filter medium, the filter medium is wrinkled, which cannot be clamped securely and cleanly.
  • the clamping of the filter medium is not suitable for clamping filter media of different thicknesses, since precisely adjusted clamping and blind rings must be used.
  • the blind ring Due to the manufacturing tolerances of tension rings and blind rings, as well as manufacturing tolerances of the thickness of the filter medium, as well as irregularities when tightening the tension rings, the blind ring does not lie correctly on the membrane, which leads to leaks at the sealing point between the drum and the lid.
  • the sealing materials and sealing forms used, as well as the design of the visible areas are unsuitable for sealing when centrifuging pharmaceutical, food technology, radiation-active or chemically aggressive suspensions. They are also unsuitable for the high pressures to be expected, such as occur due to the liquid pressure of the suspensions at high speeds.
  • the metal parts in contact with the product have not proven to be stable enough when centrifuging radiation-active or chemically aggressive suspensions.
  • the overflow is not separated from the pure centrifugate, which means that if the centrifuge is overfilled and the suspension overflows, the centrifugate becomes contaminated.
  • the liquid level and the amount of solids in the centrifuge are controlled by optis.ch, which is not permitted when centrifuging radiation-active or toxic suspensions.
  • the housing is open to the inlet, so that centrifuging radiation-active or toxic suspensions impermissibly impairs the operating personnel and the environment.
  • the working cycle of the machine has to be controlled completely manually, which is inefficient and undesirable especially when centrifuging radiation-active suspensions.
  • the object of the invention is to provide a clarifying filter centrifuge for separating hard-to-filter solid particles from a suspension; the solids Separate suspensions so completely that an optically clear liquid is created, and to achieve the lowest possible moisture content in the separated solid media.
  • Another task is to modify a clarifying filter centrifuge in such a way that it is also suitable for separating suspensions, which have very high demands in terms of physiological harmlessness, chemical resistance to aggressive media, as well as radiation resistance of the parts of the centrifuge that come into contact with the product, and product-specific design the process rooms.
  • Another task is to modify a clarifying filter centrifuge in such a way that higher speeds and longer drum lengths can be used in order to be able to separate suspensions that are even more difficult to separate.
  • Another object of the invention is to modify a clarifying filter centrifuge in such a way that the entire workflow can run automatically when the centrifuge is operated according to the invention.
  • Another object of the invention is to adapt and improve a clarifying filter centrifuge in such a way that it is suitable for carrying out the method according to the invention.
  • the invention serving to achieve the object is characterized in that the drum consists of an outer drum shell, a coaxially arranged inner drum shell and is fastened to a hollow shaft with an axially displaceable inner shaft.
  • the outer drum shell is advantageously fastened to a hollow shaft which is mounted in suitable bearings, preferably roller bearings. Due to the attachment of the outer drum shell, short distances between the center of gravity of the drum and the bearing are achieved, which results in favorable shaft loads, favorable bearing loads, favorable, higher critical speeds with the same shaft diameter and therefore the machine can be operated at higher speeds. This means that, due to the higher centrifugal field to be achieved, it is possible to separate suspensions that are more difficult to separate, and smaller particles can be separated in a shorter time, and a lower residual moisture is achieved due to the greater pressure that can be achieved in the sediment.
  • the embodiments mentioned in this invention have an axially displaceable inner shaft in the hollow shaft, by means of which the required closing force between the cover and the outer drum is applied via a co-rotating linear drive, preferably a hydraulic cylinder.
  • a co-rotating linear drive preferably a hydraulic cylinder.
  • this advantageously allows higher sealing forces to be generated between the lid and the outer drum, which on the one hand enables higher speeds of the centrifuges and therefore enables higher accelerations, that is to say better, faster sedimentation and higher pressure in the sediment, that is to say lower residual moisture; on the other hand, it ensures improved tightness, that is to say guarantees that, in connection with an improved design of the sealing point, suspension gets into the solids discharge and the separation result is thus deteriorated.
  • an inner drum shell which is preferably coaxially arranged in the outer drum shell, in which the suspension is pre-thickened and gently accelerated, as a result of which fine particles can form better sedimenting, larger agglomerates, which are more likely to be retained as a result of the gentle acceleration the overall result improved.
  • the sealing element for sealing between the outer drum shell and the lid is advantageously protected from the ejected solid by a nose located radially further inwards in such a way that the solid cannot stick to it, which protects the sealing point against caking for a long time and ensures a longer functionality, so that there is a longer security against mixing the spun off solid with suspensions.
  • the sliding floor to the lid advantageously has an additional filter medium, so that an increased amount of suspension can be separated in the same time.
  • the clamping of the filter medium in the cover or in the sliding floor is advantageously designed in such a way that filter media of different thicknesses can be clamped, the thickness compensation being carried out here by elastic compensating elements, preferably elastic plastic rings, in the clamping rings. More advantageous As a result, the radial protrusions of the filter medium are kept so small and deformed that wrinkle formation is excluded.
  • leaks in the seal between the moving floor and the outer drum casing are advantageously taken into account in such a way that the chamber between the moving floor and the drum floor is cleaned of caking and activity nests from outside while the machine is running by supplying a washing liquid via a gutter and bores in the rear wall of the drum can.
  • the sealing forms and sealing materials are advantageously adapted to the conditions for separating physiologically demanding or chemically highly aggressive or radiation-active suspensions.
  • PTFE or fluorinated elastomers are preferably used.
  • the metal parts in contact with the product advantageously consist of metal, preferably high-alloyed or plated steel, which is suitable for centrifuging physiologically demanding or chemically highly aggressive or radiation-active suspensions.
  • the moving floor advantageously has overflow openings through which excess suspension can overflow, the spilled overflow being caught in a separate collecting chamber in the housing and leading to the inlet is transported back.
  • the chamber between the moving floor and the drum floor through which the overflow runs can be cleaned while the machine is running by adding a rinsing liquid.
  • the overflow can flow through an opening in the lid of the centrifuge, from where it is led via a guide ring into a separate overflow chamber and is then returned to the inlet. This prevents mixing of the overflow with the separated solid.
  • the centrifuge when separating radiation-active and toxic suspensions, owing to the pressure-resistant, closed housing provided with a suitable seal, preferably a mechanical seal, between the housing and the drum, no toxic or radiation-active substances can get into the environment.
  • the filling and emptying of the centrifuge according to the invention can advantageously be automated by comparing the mass or volume flow of the incoming suspension and outflowing filtrate or by checking the overflow by means of suitable measuring devices and by checking the weight of the centrifuge.
  • An advantageous embodiment of the invention provides that the cover and push floor are attached to the inner drum shell, which in turn is attached to the axially displaceable inner shaft.
  • the lid, push floor and inner drum casing form a very rigid, stable unit.
  • the cover carries an annular filter medium, which is fastened by means of tension rings and elastic compensating elements to a support ring with a chamber for filtrate reception and supporting ribs for supporting the annular supporting elements on which the filter medium is smoothly clamped.
  • the: moving floor carries the said filter medium.
  • the type, thickness, material and pore size of the filter medium are advantageously adapted to the particular suspension to be separated.
  • the inlet of the suspension is located in the area of the moving floor and has a guide device for even distribution and deflection of the suspension.
  • the cover is not fastened to the inner drum casing, but rather to the push floor by means of tie rods.
  • tie rods to change the filter medium, one only has to loosen the connections between the pull rod and the cover in order to be able to remove the cover for changing the filter medium.
  • the cover is mounted radially on the inner drum shell in such a way that it is axially displaceable.
  • Drawbars that are attached to the drum base and have a stop lead through holes in the push floor and in the lid.
  • the lid When moving the push floor with the inner drum casing to discharge the sediment, the lid only moves up to the stop on the pull rods.
  • the lid even with long drum lengths, the lid only opens as far as is necessary to eject the sediment. This leads to a very short catch chamber for the sediment and to low moving masses, which also offers sufficient stability when unloading at high speeds.
  • Clamping elements preferably prestressed rings made of elastomers with a suitably high coefficient of friction in the hole in the cover through which the inner drum shell is guided. ensure that the cover is transported by friction when the pushing floor moves out.
  • the inner drum shell is firmly connected to the drum base of the outer drum shell or to the hollow shaft, the inner drum shell serving as a radial guide for the axially displaceable cover. Due to the fixed connection, the lid can be guided very precisely, which also means that the Zen can be unloaded due to the improved stability trifuge allowed at very high speed.
  • the visual lifting floor is connected to the axially displaceable inner shaft by means of tie rods which are guided through bores in the cover, via an inlet funnel located coaxially in the inner drum shell.
  • FIG. 1 provides that an inner drum shell 2 is fixedly attached to a drum base 37.
  • the inner drum shell 2 is guided through a bore 42 in a cover 30 and has a stop 25 which limits the path of the cover 30 when it is opened.
  • a push floor 38 is connected to a pull rod 24 which is guided through a bore 41 in the cover 30 and is fastened to a flange 29.
  • the pull rod 24 has a stop 23 which transmits the closing force to the cover 30 when it is closed.
  • the flange 29 is connected to an inlet funnel 20 which is fastened to the axially displaceable inner shaft 12, through which the closing movement of the cover 30 or the pushing-out movement of the sliding floor 38 is transmitted by a rotating linear drive.
  • the inlet funnel 20 has at its free end a bore 27 with a ring 26 through which an inlet pipe 28 leads into the inlet funnel 20.
  • the diameter of the bore 27 is in its play by changing the ring 26 to the outer diameter of the inlet pipe 28 adaptable, whereby the sealing effect of the gap can be regulated and the amount of gas which flows through the ventilation effect of the centrifuge through the interior of the centrifuge can be adapted to the requirements of the respective centrifugal material.
  • the cover 30 has an annular filter medium 34 (FIG. 8).
  • the push floor 38 has a guide device 3 in the region of a distributor opening 36.
  • the suspension to be separated passes through the inlet pipe 28 into the inlet funnel 20 and from there through bores 53 into the inner drum shell 2, where it is pre-thickened and pre-accelerated. From here it passes through the distributor channel 39 and the distributor openings 40 into the collecting channel 6 at the moving floor 38 and via distributor openings 36, where it is accelerated, to the guide device 3. Here it is distributed and deflected towards the filter medium 34. On their way to the filter medium, part of the solid sediments out.
  • the suspension liquid flows through the filter medium 34 and emerges from the bores 31 and is thrown off at the nose 32.
  • the filtrate is collected and discharged in the collecting chamber 22.
  • the solid matter in the suspension liquid is retained on the filter medium 34.
  • Too much flowing suspension overflows through bores 19 in the moving floor 38 and flows into the chamber 88.
  • the overflow comes out of the drum through bores 18 in the chamber 88 and is thrown off at the spray lug 35 into the catch chamber 17, from where it is returned to the inlet .
  • Residues of the overflowing suspension adhering to the chamber 88 are rinsed out of the chamber by rinsing with a rinsing liquid, preferably clear filtrate.
  • rinsing liquid is brought through the inlet 14 into a gutter 15, from where it flows through bores 16 arrives in the chamber 88, rinses it and is thrown off with the residues through the bores 18 into the collecting chamber 17.
  • the contaminated rinsing liquid can be added directly to the inlet from the catch chamber. If the room inside. of the outer drum shell 1 between cover 30 and sliding floor 38 is filled to the permissible height with sediment 4, or there is no longer any suspension, the suspension supply is switched off and the sediment 4 spun dry for a preselectable period of time. After dry spinning, the linear drive 7, preferably a hydraulic drive, shifts the inner shaft 12 and thus, via the pull rod 24, the push floor 38 in the direction of the free end of the outer drum casing 1. If sufficient sediment 4 is present, the sediment presses on it in this way the cover 30 so that it opens. In the event that there is too little sediment in the centrifuge, clamping elements, as described in FIG.
  • the individual capture chambers 17, 21 and 22 for filtrate, sediment and overflow or rinsing liquid are separated from one another by suitable seals, preferably gap seals with sealing gas inlet and spray nose, in such a way that also at an increased ventilation effect of the outer drum casing, as is to be expected at the desired higher speeds, no mixing takes place.
  • FIG. 2 A representation of the housing 5 and frame 9 was omitted here because of the same design as in FIG. 1.
  • the moving floor 38 is firmly connected to the inner drum casing 2.
  • the axially displaceable inner shaft 12 is attached to the moving floor 36.
  • the inner drum shell 2 serves as a radial, axially displaceable guide for the lid 30 on its outer circumference.
  • the inner drum shell 2 has a stop 25.
  • a pull rod 24, which has a stop 23, is guided through a bore 41 in the cover 30 and fastened to the drum base 37 and to the ring 43.
  • the suspension to be separated passes through the inlet pipe 28 directly into the inner drum shell 2, where it is pre-sedimented and pre-accelerated.
  • Fig. 3 shows a further advantageous embodiment of the invention.
  • the push floor 38 is fastened to the inner drum casing 2 and fastened together with this to the axially displaceable inner shaft 12.
  • the inner drum shell 2 is guided through the enlarged bore 42 in the cover 30.
  • the cover 30 is connected to the push floor 38 by means of tie rods 24, which transmit the sealing forces for closing the cover and fix the cover radially.
  • tie rods 24 transmit the sealing forces for closing the cover and fix the cover radially.
  • a measuring instrument can now advantageously be fastened from the outside within the centrifugal chamber are attached, preferably an optoelectronic sensor, by means of which the fill level in the centrifugal chamber is measured.
  • a pipe with nozzles for adding liquid components in the sediment can also be introduced through this annular gap.
  • the stripping element 68 preferably a rod stripper, cleans the pull rod carried out from adhering dirt and prevents the penetration of suspension into the bore 41, which also prevents that activity nests form in the bore 41 when separating radiation-active suspensions.
  • the guide element 69 preferably a rod guide ring made of PTFE, prevents metallic contact between the cover 30 and the pull rod 24.
  • the clamping element 70 preferably a plastic ring, generates the friction required for transport of the lid 30 to open the centrifugal chamber when the sediment is ejected.
  • the stripping element 47 preferably a rod scraper, cleans the inner drum shell 2 on the outer diameter from adhering dirt and prevents the penetration of suspensions into the bore 42 and thus also that 42 activity nests form in the bore when separating radiation-active suspensions.
  • the guide elements 46 preferably rod guide rings made of PTFE, fix the cover 2 on the inner drum shell 2.
  • the clamping elements 48 preferably plastic rings, generate the friction required for transporting the cover. in the case of the embodiment of the centrifuge according to FIG. 2.
  • the rotation obstruction element 44 preferably a feather key made of PTFE, prevents inadmissible radial movement of the inner shaft 12.
  • the guide element 51 preferably a rod guide ring made of PTFE, ensures a rigid, radial guidance of the inlet funnel when the inner shaft 12 is fully extended.
  • the scraper element 52 preferably a rod scraper made of PTFE, prevent penetration of suspension into the area of the guide element 51 and thus the formation of activity nests when separating radiation-active suspensions.
  • the filter medium 34 preferably a plastic membrane
  • the filter medium 34 lies on a support element 73 with openings, preferably a perforated sheet metal ring, which closes the chamber 81 for collecting the filtrate.
  • the chamber 81 is located in a thrust ring 72 which is attached to the cover 30.
  • the chamber 81 is connected to an annular groove 75 through the bore 74. from which drill holes through the cover 30.
  • the filter medium 34 is clamped onto the support ring 72 by means of a clamping ring 82, which has a compensating element 71, preferably an elastic plastic ring, and a clamping ring 77, which has a compensating element 78, preferably an elastic plastic ring.
  • the compensating elements 71 and 77 equal thickness differences of the filter media and enable the clamping of differently thick tilter media, adapted to the suspension to be separated.
  • the clamping ring 77 closes off the centrifugal chamber with the outer drum casing 1.
  • the outer drum shell has a sealing element 80, preferably a perfluorized plastic ring, which can be replaced by removing the ring 79.
  • the lug 83 on the overflow edge of the outer drum shell 1 prevents sediment from reaching the sealing element 80 when the centrifugal chamber is unloaded, and from settling here, which would impair the sealing effect.
  • the solid When separating suspensions, the solid is retained on the filter medium 34.
  • the liquid penetrates the filter medium and collects itself in the chamber 81, from where it escapes through the holes 74 and is thrown off.
  • the embodiment of the support of the filter medium 34 permits tight, wrinkle-free mounting of the filter medium.
  • FIG. 9 shows an embodiment of the attachment of the filter medium 56 in the push floor 38, as well as an embodiment of the seal between the push floor and the outer drum casing 1. Except for the different design of the clamping ring 59, the clamping of the filter medium is carried out in the same way as that in the cover 30.
  • the push floor has a sealing element 54 located in an annular groove, preferably a hydraulic piston seal made of material adapted to the suspensions, which is pushed out when the sediment is pushed out with the edge facing the clamping ring 59 up to the overflow edge of the outer drum shell 1, so that the centrifugal chamber is completely emptied of sediment. is and the groove wall facing the sediment is freed of adhering sediment by the centrifugal forces.
  • the cover 30 has a bore 84 through which too much supplied suspension overflows and via the guide ring 85 attached to the cover into the catch chamber 86, without mixing with the filtrate being flung off.
  • the overflow is returned to the inlet from the catch chamber 86.

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EP86112417A 1985-09-16 1986-09-08 Centrifugeuse clarificatrice et filtrante et procédé de séparation de suspensions Expired - Lifetime EP0215418B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86112417T ATE66392T1 (de) 1985-09-16 1986-09-08 Klaer-filter-zentrifuge und verfahren zum trennen von suspensionen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH400585 1985-09-16
CH4005/85 1985-09-16

Publications (3)

Publication Number Publication Date
EP0215418A2 true EP0215418A2 (fr) 1987-03-25
EP0215418A3 EP0215418A3 (en) 1988-09-21
EP0215418B1 EP0215418B1 (fr) 1991-08-21

Family

ID=4268029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112417A Expired - Lifetime EP0215418B1 (fr) 1985-09-16 1986-09-08 Centrifugeuse clarificatrice et filtrante et procédé de séparation de suspensions

Country Status (5)

Country Link
US (2) US4808308A (fr)
EP (1) EP0215418B1 (fr)
JP (1) JPS62110756A (fr)
AT (1) ATE66392T1 (fr)
DE (1) DE3680977D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002078852A1 (fr) * 2001-03-28 2002-10-10 Heinkel Aktiengesellschaft Centrifugeuse a tiroir

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DE3740411C2 (de) * 1987-11-28 1996-11-14 Heinkel Ind Zentrifugen Stülpfilterzentrifuge
DE3911320A1 (de) * 1989-04-07 1990-10-11 Kloeckner Humboldt Deutz Ag Zentrifuge zum kontinuierlichen trennen von stoffen unterschiedlicher dichte
DE59108184D1 (de) * 1991-05-04 1996-10-17 Heinkel Ind Zentrifugen Stülpfilter-zentrifuge
DE4316081C1 (de) * 1993-05-13 1994-08-04 Heinkel Ind Zentrifugen Vorrichtung zur Durchführung einer Gewichtsmessung bei Zentrifugen
ZA948564B (en) * 1993-11-19 1995-07-26 Bristol Myers Squibb Co Liquid separation apparatus and method
FR2808458B1 (fr) * 2000-05-02 2002-08-09 Cogema Dispositif de filtration rotatif en continu d'un liquide tel qu'une solution contenant un precipite
US7591075B2 (en) * 2006-09-28 2009-09-22 Techtronic Power Tools Technology Limited Self-leveling mechanism
CA2900397C (fr) * 2013-10-14 2016-08-02 Halliburton Energy Services, Inc. Membrane de flexion pour systeme d'essai de fluide de forage

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FR1362722A (fr) * 1962-05-19 1964-06-05 Centrifugeuse à décanteur et à crible
DE3238728A1 (de) * 1981-10-19 1983-08-11 DrM, Dr. Müller AG, 8708 Männedorf Verfahren zum trennen von suspensionen in einer klaer-filter-zentrifuge sowie klaer-filter-zentrifuge

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US934221A (en) * 1908-07-29 1909-09-14 Hugo Schmitz Centrifugal machine.
US1292758A (en) * 1918-04-12 1919-01-28 Roque Galguera Y Gonzalez Filtering apparatus.
US3087621A (en) * 1958-07-16 1963-04-30 Sharples Corp Centrifugal machine
CH436132A (de) * 1962-05-19 1967-05-15 Mueller Hans Zentrifuge
DE1272229B (de) * 1963-09-10 1968-07-04 Kurt Pause Kontinuierlich arbeitende Siebzentrifuge mit einer konischen Schleudertrommel
US3438500A (en) * 1967-05-18 1969-04-15 Francisco A Pico Centrifugal separating apparatus
US3884806A (en) * 1972-12-26 1975-05-20 Robert W Coughlin Method and apparatus for centrifugally regenerative filtration
DE2709894C3 (de) * 1977-03-08 1982-01-07 Heinkel Industriezentrifugen GmbH & Co, 7120 Bietigheim-Bissingen Diskontinuierliche Filterzentrifuge
SU1044338A1 (ru) * 1980-02-06 1983-09-30 Государственный научно-исследовательский и проектно-конструкторский институт гидрометаллургии цветных металлов "Гидроцветмет" Центрифуга дл отделени твердых частиц от жидкости

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
FR1362722A (fr) * 1962-05-19 1964-06-05 Centrifugeuse à décanteur et à crible
DE3238728A1 (de) * 1981-10-19 1983-08-11 DrM, Dr. Müller AG, 8708 Männedorf Verfahren zum trennen von suspensionen in einer klaer-filter-zentrifuge sowie klaer-filter-zentrifuge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002078852A1 (fr) * 2001-03-28 2002-10-10 Heinkel Aktiengesellschaft Centrifugeuse a tiroir

Also Published As

Publication number Publication date
EP0215418A3 (en) 1988-09-21
EP0215418B1 (fr) 1991-08-21
US4915851A (en) 1990-04-10
ATE66392T1 (de) 1991-09-15
JPH0478346B2 (fr) 1992-12-10
DE3680977D1 (de) 1991-09-26
JPS62110756A (ja) 1987-05-21
US4808308A (en) 1989-02-28

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