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WO2004033105A1 - Centrifugeuse de filtration presentant des logements destines a differentes unites de filtration - Google Patents

Centrifugeuse de filtration presentant des logements destines a differentes unites de filtration Download PDF

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Publication number
WO2004033105A1
WO2004033105A1 PCT/EP2003/008530 EP0308530W WO2004033105A1 WO 2004033105 A1 WO2004033105 A1 WO 2004033105A1 EP 0308530 W EP0308530 W EP 0308530W WO 2004033105 A1 WO2004033105 A1 WO 2004033105A1
Authority
WO
WIPO (PCT)
Prior art keywords
centrifuge
filter
centrifuge according
outer drum
filter unit
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.)
Ceased
Application number
PCT/EP2003/008530
Other languages
German (de)
English (en)
Inventor
Hans Gerteis
Gerd Ph. Mayer
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 AG
Original Assignee
Heinkel AG
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 AG filed Critical Heinkel AG
Priority to AU2003255344A priority Critical patent/AU2003255344A1/en
Publication of WO2004033105A1 publication Critical patent/WO2004033105A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/06—Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like
    • 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
    • B04B7/00—Elements of centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B04B7/06—Safety devices ; Regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/18—Rotary bowls formed or coated with sieving or filtering elements

Definitions

  • the invention relates to a filter centrifuge with a centrifuge housing, with an outer drum arranged in the centrifuge housing, with a filter unit arranged in the outer drum and non-rotatably connected to it, and with a drive shaft which is non-rotatably connected to the outer drum and the filter unit and rotatably supports them together.
  • a filter centrifuge of a similar type is known for example from DE 35 20 134.
  • This centrifuge which is designed as an inverting filter centrifuge, has a filter cloth that can be inserted into a drum, which is attached to the drum edge against an open end face of the drum and is connected to a drum bottom adjacent to a closed end wall of the drum, the drum, drum bottom and filter cloth forming a surface filter unit.
  • the suspension to be filtered is introduced into the interior of the drum, the liquid constituents of the suspension passing through the filter cloth and the drum wall and the solids content of the suspension being deposited on the filter cloth as a filter cake.
  • the filter cake can be easily removed mechanically from the drum by opening a lid and moving the drum base together with the attached filter cloth towards the open end of the drum.
  • the Trom Melteil is pushed so far out of the drum that ultimately the filter cloth is completely turned inside out and the filter cake is carried outwards and blown off by the turning movement.
  • the object of the present invention is to develop a filter centrifuge of the type mentioned at the outset in such a way that it can perform a larger spectrum of tasks.
  • the outer drum comprises a receptacle with which the outer drum can be fitted interchangeably with a surface filter unit or with a depth filter unit, depending on its intended use, and thereby the centrifuge from the surface filtration principle to the depth filtration principle and vice versa is convertible.
  • Depth filter media are characterized in that the particles carried in a fluid are preferably separated within the structure of the filter medium.
  • the deposition is carried out by inertial forces and / or diffusion, whereby blocking effects and electrical charges can also influence the deposition.
  • the separation there is an agglomeration of the individual solid particles and / or the structure of the filter medium with the solid particles. Therefore, the properties of the particles themselves, their size distribution, density and tendency to agglomerate with each other have a significant influence on the filtration result.
  • Surface filter media are characterized by a fine surface structure that prevents solid particles from penetrating into the lower-lying areas of the filter medium, so that filtration outside of the actual filter mediums takes place.
  • the structure of the filter cake which is deposited on the filter medium causes the fluid to be filtered to be filtered, so that the filter medium only has a supporting function even after the filter cake has formed.
  • the filter media used in the solid / liquid separation can often not be clearly assigned to a filter medium type, since their property profile is more likely to be located between the characteristic characteristics of the surface filter and depth filter media. In a rough orientation, however, filter media with a fine surface structure can be assigned to the surface filter media and multifilament filter cloths to the depth filter media.
  • the outer drum comprises a receptacle which, depending on the intended use of the filter centrifuge, can be fitted with either a surface filter unit or a depth filter unit. This gives you the option of exchanging these filter units for each other and thus converting the centrifuge from surface filtration to depth filtration and vice versa as required.
  • the receptacle can be formed in one part or in several parts and consist of one or more segments, for example segments of different radii which are connected to one another.
  • the separating principle can be set up on a centrifuge according to the invention, which allows better filtration of a given suspension, so that production takes place under optimal conditions at the lowest cost.
  • both the surface filtration and the depth filtration principle can be set up in a filter centrifuge according to the invention, it is possible, for example, to dispense with the activation and, in particular, the provision of a second filtration unit in multi-batch productions, so that on the one hand there is a reduced space requirement and on the other hand the acquisition There are no operating, operating or maintenance costs for a second filtration unit.
  • the filter centrifuge according to the invention has the advantage that the outer drum can be equipped with the filter unit, the filter medium of which has the greater passivity compared to the given suspension.
  • the receptacle comprises a holding device which keeps the inner wall of the outer drum and the filter unit at a distance. This ensures that there is a space between the inner wall of the casing and the filter unit, through which the filtrate emerging from the filter unit can flow out of the interior of the outer drum.
  • the holding device has the effect that the filter unit does not make any movements radially to the axis of rotation of the outer drum during the centrifuging process.
  • the inner wall of the casing is provided with recesses through which the filtrate emerging from the filter unit can be removed from the outer drum, the filter unit coming into contact with the inner wall of the outer drum.
  • the holding device is arranged on an inside of the outer drum, for example on the inside of the jacket or on an end face, an arrangement on the inside of the jacket being preferred from a constructional point of view.
  • the holding device can be arranged on an outer side of the filter unit, for example on the outer surface of the jacket or on an end face of the filter unit, according to an embodiment that is almost the same.
  • the holding device comprises a holding element. It can be provided from the design point of view that the holding element is aligned parallel to the axis of rotation of the outer drum.
  • the holding device comprises several of the holding elements, the holding elements being arranged uniformly next to one another.
  • the centrifugal forces acting on the holding elements during rotation of the outer drum are transmitted uniformly to the outer drum, so that during the centrifuging process the formation of a non-uniform movement of the outer drum and the associated damage to the centrifuge are avoided.
  • the receptacle comprises a tensioning device, by means of which the filter unit can be locked in the receptacle, so that the filter unit and the outer drum do not move relative to one another and any damage to the filter unit of the outer drum and the drive shaft is avoided.
  • the tensioning device can, for example, be arranged on the open end face at the edge of the outer drum or on the holding device and form a unit with it, the arrangement on the more accessible open end face being preferred in order to be able to replace the filter units without great technical effort ,
  • the clamping device comprises an annular flange.
  • the receptacle comprises a centering device, by means of which the center of gravity of the filter unit can be adjusted to the axis of rotation of the outer drum.
  • the centering device With the centering device, the filter unit can be aligned in the center of the outer drum, so that there is no imbalance in the outer drum during the centrifuging process, which could damage the centrifuge.
  • the centering device can be arranged both on an inside of the outer drum and also on the tensioning device and / or on the holding device and form a unit with these or be formed as an integral element with these.
  • the centering device is preferably arranged in the vicinity of the open end face of the outer drum, so that an operator can easily and unproblematically center the filter unit in the outer drum without having to bend too far into the interior of the filter unit.
  • the centering device can also serve as an aid for inserting the exchanged filter unit.
  • the interior of the outer drum is conical and widens in the direction of its bottom. This ensures that on the Filtrate impinging on the inside of the outer drum is discharged from the interior of the outer drum due to centrifugal forces in the direction of the drum bottom.
  • the outer drum is equipped with a depth filtration unit with a depth filter medium.
  • the depth filtration unit will generally comprise an inner drum arranged inside the outer drum, a filter cloth and a bottom part, the filter cloth being connected on the one hand to the bottom part and on the other hand being held against the edge of the inside drum on the open end face, and wherein the bottom part and the Inner drum are axially displaceable relative to each other, in order to mechanically discharge the solid fraction retained by this filter medium from the depth filtration unit with a turning movement of the filter cloth.
  • the outer drum is equipped with a surface filter unit with a surface filter medium.
  • the surface filter unit comprises an essentially cylindrical surface filter element for filtering a suspension to be introduced into the interior of the surface filter unit.
  • the surface filter element is slightly conical and widens in the direction of the open end of the outer drum. This allows very close tolerances of a floor element with respect to the surface filter element and avoids blocking the floor element when the floor element extends out of the filter unit even in cases where the filter cake bakes very easily.
  • Suitable surface filter media are made of metal, ceramic, plastic or a mixture of these materials. For example, multi-layer metallic mesh networks with an increasing mesh size are suitable.
  • the surface filter unit comprises a base element, the base element and the surface filter element being axially displaceable relative to one another in order to mechanically discharge the solid fraction retained by the surface filter element from the surface filter unit.
  • the filter cake can be easily removed mechanically from the drum by moving the bottom element towards the open end of the outer drum.
  • the bottom element has a sealing element on its edge, which, in a retracted position of the bottom element, lies sealingly against the inside of the surface filter element in order to prevent suspension from escaping from the surface filter unit and thus an inflow of suspension to the filtrate to prevent.
  • the lid When removing the filter cake from the surface filter or depth filter unit of the filter centrifuge according to the invention, the lid must first be removed from the free end of the outer drum.
  • the cover lies sealingly against the free end face of the outer drum during the spinning process and must be rotated together with the latter.
  • a simple construction which takes these two conditions into account provides that the cover is rigidly connected to the base part or base element via spacers.
  • the lid is opened, and the mechanically discharged filter cake can fall out of the open end of the outer drum.
  • the shifting shaft penetrates the shaft when the bottom part or the bottom element is pushed forward Interior of the respective filter unit, and this can lead to contamination, for example from lubricants, by transferring these materials from the machine frame to the interior of the filter unit.
  • residues of suspension, residues of filter cake material and / or filtrate can be introduced into the machine housing through the sliding shaft.
  • a pneumatic device can serve to support the removal of the filter cake, which serves to detach and discharge filter cake residues.
  • the above-mentioned pneumatic device for detaching and discharging filter cake residues is preferably a device which generates a gas flow or gas flows in the axial direction of the outer drum towards its open end face.
  • a gas stream or gas streams from the pneumatic device can act here, which strikes the filter unit in the radial direction.
  • Gas flows that strike the filter unit in the radial direction particularly facilitate the removal of filter cake residues from the filter medium.
  • a combination of gas flows which act in the axial direction and in the radial direction provide an excellent cleaning action for detaching and removing the filter cake residues.
  • Particularly preferred pneumatic devices are able to generate a pulsating gas flow or pulsating gas flows which have a much better detaching effect for filter cake residues on the filter unit. At the same time, the volume of air used can be minimized.
  • outlets are arranged in the interior of the outer drum, which are used to rinse the inside of the outer drum and / or the filter medium with a liquid cleaning medium, in particular a solvent.
  • the lid is provided with an opening and a filling line is provided, which is designed, for example, as a filling tube which passes through the lid and leads into the interior of the filter unit during the centrifuging process.
  • the filling tube can be guided freely through the opening, so that contact between the filling tube and the lid opening is avoided even during centrifuging.
  • the space enclosed by the filter units is to apply pressure or vacuum.
  • the filling pipe can be connected to pressure or vacuum sources for changing the pressure in the filter unit and sealed against the cover by means of a combined rotary and sliding seal.
  • the rotary seal seals the filling tube against the rotating cover and the sliding seal seals the filling tube against the axially displaceable cover.
  • Filling the filter unit with the suspension to be filtered is also possible via a filling line leading through an axial bore in the drive shaft, but is structurally complex.
  • the outer drum and the bottom part or bottom element are axially displaceable relative to one another by means of a rotatingly driven hollow shaft and a carrier shaft that can be moved back and forth therein ,
  • the outer drum is connected to the hollow shaft and the bottom part or the bottom element with the carrier shaft in a rotationally fixed manner.
  • the centrifuge according to the invention has a safety device which prevents the filter unit from being opened by moving the cover as long as the outer drum rotates at a speed greater than a critical speed above which opening would be associated with a risk.
  • a safety device which prevents the filter unit from being opened by moving the cover as long as the outer drum rotates at a speed greater than a critical speed above which opening would be associated with a risk.
  • centrifugal regulators that ensure that the opening movement can only be initiated below a certain drum speed.
  • this type of safety device is relatively complicated and prone to failure, so that one will preferably use a safety device that does not require the use of a centrifugal governor.
  • centrifugal machines The ease of cleaning of centrifugal machines is of particular importance, especially in the case of such sensitive products as food and pharmaceuticals, so that all parts of the centrifugal machine that come into contact with the suspension to be filtered, the filtrate and the filter cake material should be easily accessible and cleanable.
  • the housing of the centrifuge has a first housing space with an outlet for removing the filtrate and a second housing space with an outlet for removing the filter cake, the first housing space sealingly from one the first independent housing part and the second housing space is sealingly enclosed by a second independent housing part, the two housing parts also being pivoted in different directions for each other about separate axes such that they can be pivoted individually between a closed state and an open state relative to the outer drum are.
  • This design of the housing allows access to all important components when the housing parts are swung open without the outer drum itself having to be dismantled.
  • the two housing parts can be pivoted about vertical axes.
  • the centrifuge according to the invention comprises a control unit in which the parameters required for controlling the centrifuge according to the depth filtration and surface filtration principles are stored and, depending on the separation principle for which the centrifuge is designed, can be called up accordingly.
  • the filter centrifuge according to the invention in order to change the separation principle of the centrifuge from deep filtration to surface filtration and vice versa, only the outer drum has to be equipped with the corresponding filter unit. Since only a few component components are required to change the separation principle, the change can be carried out mechanically simply and quickly.
  • the drive shaft of the centrifuge according to the invention will be arranged and mounted horizontally.
  • Figure 1 is a sectional view of a filter centrifuge according to the invention in a first embodiment in the centrifuging and discharge position;
  • Figure 2 is a sectional view of the centrifuge in the discharge position along the line
  • FIG. 3 a sectional view of the filter centrifuge according to the invention according to a second embodiment in the centrifuging and discharge development;
  • Figure 4 is a sectional view of the centrifuge in the discharge position along the line
  • a filter centrifuge 10 according to the invention is shown according to a first operating state.
  • the centrifuge is shown in a centrifuging position (solid lines) with a drum cover 14 in position A and in a discharge position (dash-dotted lines) with drum cover 14 in position B.
  • the filter centrifuge 10 which is designed as an inverting filter centrifuge, comprises a centrifuge housing 12 which tightly encloses the entire machine and in which a hollow shaft 18 is rotatably mounted in a bearing 20 on a stationary machine frame (not shown).
  • the centrifuge housing 12 is usually designed as a pressure-resistant housing in order to withstand the pressures that occur during procedural steps, e.g. with steam sterilization approx. 1 to 2 bar.
  • a drive unit (not shown), known per se, is connected in a rotationally fixed manner, via which the hollow shaft 18 can be set in rapid circulation.
  • a carrier shaft 22 Arranged in the interior of the hollow shaft 18 is a carrier shaft 22 which rotates together with the hollow shaft 18, but is axially displaceable in the latter.
  • a stepped widening centrifugal drum is flanged as an outer drum 24 with its closed bottom 25 in a self-supporting and rotationally fixed manner.
  • the outer drum 24 has a first drum segment 62 which widens slightly in the direction of the base 25 at one end of which an annular disk-shaped end wall 26 is arranged, to which a second, tapered drum segment 64 having the bottom 25 coaxially connects.
  • strips 34 are arranged on the drum wall parallel to the axis of rotation of the hollow shaft 18 as holding elements, strips 34 arranged at angular intervals forming channels 36 (FIG. 2) with the drum wall the filtrate can be derived from the interior of the first drum segment 62.
  • the carrier shaft 22 ends on the outer drum 24 with an annular flange 23, which forms part of a receptacle for the filter unit to be inserted in the centrifuge 10.
  • the annular flange centers the filter elements (here depth filtration unit 37) with an axially projecting collar 30 relative to the outer drum 24.
  • the depth filtration unit 37 is composed here of an inner drum (drum basket 38), the filter cloth 40 and the bottom part 42.
  • the cylindrical drum basket 38 is used as the inner drum, which comes to rest on the strips 34 and is held in the outer drum 24 in a rotationally fixed manner.
  • the drum basket 38 can be formed, for example, from a sheet metal having holes or a porous surface filter medium and supports the filter cloth 40 and the filter cake deposited thereon.
  • a retaining ring 29 is mounted as a tensioning element, which first clamps the surface filter unit against the end wall 26 and thus holds it in the assembly position, and also an edge of an essentially tubular filter cloth 40 as a depth filtration medium the drum basket 38 firmly stressed.
  • the other edge of the filter cloth 40 is correspondingly tightly connected to a bottom part 42 which is rigidly connected to the displaceable carrier shaft 22 which penetrates freely through the bottom 25.
  • the retaining ring 29 together with the ring flange 23 forms the receptacle for the filter unit 37.
  • the drum cover 14 is rigidly fastened to the base part 42 by means of stud bolts 44, leaving a space free, which sealingly closes the outer drum 24 when it rests on the retaining ring 29 and together with the base part 42 by axially pushing the carrier shaft 22 out of the hollow shaft 18 free of the outer drum 24 can be lifted off.
  • a filling tube 46 is arranged on the left side of the filter centrifuge in FIG. 1, which serves to feed a suspension to be broken down into its solid and liquid components into the filter unit consisting of drum basket 38, filter cloth 40 and bottom part 42 and in FIG. 1 penetrates into a bore 48 of the displaceable carrier shaft 22 by means of the discharge position shown in dash-dotted lines.
  • a reciprocating movement of the displaceable carrier shaft 22 carrying the base part 42 can be achieved by means of a translation device.
  • a bellows 32 is arranged as an expandable partition wall, which provides a seal between the carrier shaft 22 and the process space.
  • the filter centrifuge first takes the position shown by the solid lines in FIG. 1 with the drum cover 14 in position A.
  • the displaceable carrier shaft 22 is retracted in the hollow shaft 18 and by means of a translating device, as a result of which the bottom part 42 connected to this carrier shaft 22 in the Near the end wall 26 of the outer drum 24 lies and the filter cloth 40 is inserted into the outer drum 24 such that it lies against the inside of the cylindrical drum basket 38.
  • the drum cover 14 has placed tightly on the retaining ring 29 arranged on the opening edge 28 of the outer drum 24. With the outer drum 24 rotating rapidly, the suspension to be filtered is introduced into the depth filtration unit via the filling tube 46.
  • the liquid constituents of the suspension pass through the filter cloth 40 and the drum basket 38 and reach the channels 36, from where they flow into a filtrate housing 50 due to the conical design of the first drum segment 62 of the outer drum 24.
  • the solid particles of the suspension are retained as a firmly adhering filter cake by the filter cloth 40.
  • the carrier shaft 22 is displaced in the direction of the open end face 27 of the outer drum 24, as a result of which the bottom part 42 arranged on the carrier shaft 22 turns the filter cloth 40 outwards, so that the solid particles adhering to it are thrown off radially in the direction of a solid housing 52.
  • the filter centrifuge is brought back into the centrifuging position by pushing back the carrier shaft 22.
  • the centrifuge of Figure 1 is shown as a filter-cloth inverting filter centrifuge equipped or converted. Instead of the depth filtration unit 37, a surface filter unit 56 is now mounted in the outer drum 24.
  • the ring flange 23 forms here, together with the retaining ring 29, the receptacle for the surface filter unit 56 and centers it with respect to the outer drum with its collar 30.
  • the filter centrifuge is in a centrifuging position (solid lines) with the drum cover 14 in a position A and in a discharge position (dotted lines) with the drum cover 14 in a position B.
  • the filter centrifuge in the second operating state has a surface filter unit 56 with a cylindrical surface filter element 57 and a bottom element 58, instead of the depth filter unit 37 with drum basket 38, filter cloth 40 and bottom part 42, the surface filter element 57 coming into contact with the strips 34 and is held non-rotatably in the outer drum 24.
  • the surface filter element 57 is formed from a multi-layer metal mesh filter that becomes coarser in the radial direction towards the outside or a sintered ceramic filter with a similar characteristic.
  • the filter-free inverting filter centrifuge first takes centrifuging position A.
  • the displaceable carrier shaft 22 is retracted into the hollow shaft 18 and the translation device, as a result of which the base element 58 connected to the carrier shaft 22 lies in the vicinity of the end wall 26.
  • the drum cover 14 has placed sealingly on the retaining ring 29 arranged on the opening edge 28 of the outer drum 24.
  • suspension to be filtered is introduced via the filling tube 46.
  • the liquid constituents of the suspension pass through the surface filter element 57 and thus reach the channels 36, from where they flow into the filtrate housing 50.
  • the solid particles of the suspension are retained by the surface filter element 57.
  • the carrier shaft 22 is now shifted (position B) as shown in dash-dotted lines in FIG. 3, as a result of which the base element 58 moves to the open end face 27 of the outer drum 24 and the filter cake formed by the solid particles is transported out of the surface filter element 57 and into the solid housing 52 throws off. From there, the solid particles can be easily removed.
  • the filling tube 46 has penetrated into the bore 48.
  • the filter centrifuge is brought back into the centrifuging position (position A) by pushing back the carrier shaft 22. In this way, the centrifuge can be operated with the outer drum 24 rotating continuously.
  • the filter cake is largely mechanically discharged from the inside of the surface filter element 57.
  • the diameter of the bottom element 58 must always be at least slightly smaller than the clear diameter of the surface filter element 57, a filter cake residue remains on the surface filter element 57.
  • compressed air lines 59, 60 can be introduced into the interior of the drum, which aids detachment and removal of filter cake residues from the surface filter element 57.

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  • Centrifugal Separators (AREA)

Abstract

La présente invention concerne une centrifugeuse de filtration comprenant un logement de centrifugeuse (12), un tambour externe (24) qui est placé dans le logement de centrifugeuse (12), une unité de filtration (37) qui est placée dans le tambour externe (24) et est reliée fixe en rotation à celui-ci, ainsi qu'un arbre moteur (18) qui est relié fixe en rotation au tambour externe (24) et à l'unité de filtration (37) et met ceux-ci en rotation de façon commune. L'objectif de la présente invention est mettre au point une telle centrifugeuse qui présente une valeur d'usage plus élevée. A cette fin, le tambour externe (24) présente un logement (26) qui permet de l'équiper au choix de façon interchangeable, en fonction de l'objectif d'utilisation, avec une unité de filtration superficielle ou avec une unité de filtration en profondeur (37). La centrifugeuse selon cette invention peut ainsi s'adapter du principe de filtration superficielle au principe de filtration en profondeur et inversement.
PCT/EP2003/008530 2002-09-20 2003-08-01 Centrifugeuse de filtration presentant des logements destines a differentes unites de filtration Ceased WO2004033105A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003255344A AU2003255344A1 (en) 2002-09-20 2003-08-01 Filter centrifuge comprising a receiving device for several filter units

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002145013 DE10245013A1 (de) 2002-09-20 2002-09-20 Filterzentrifuge
DE10245013.7 2002-09-20

Publications (1)

Publication Number Publication Date
WO2004033105A1 true WO2004033105A1 (fr) 2004-04-22

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PCT/EP2003/008530 Ceased WO2004033105A1 (fr) 2002-09-20 2003-08-01 Centrifugeuse de filtration presentant des logements destines a differentes unites de filtration

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AU (1) AU2003255344A1 (fr)
DE (1) DE10245013A1 (fr)
WO (1) WO2004033105A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006133859A3 (fr) * 2005-06-15 2007-03-08 Fima Maschb Gmbh Dispositif de centrifugation ameliore pour eviter une contamination croisee
WO2018157141A1 (fr) 2017-02-27 2018-08-30 Translate Bio, Inc. Procédés de purification d'arn messager
WO2022072836A2 (fr) 2020-10-01 2022-04-07 Translate Bio, Inc. Procédés de purification d'arn messager

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1787723B1 (fr) * 2005-11-18 2017-02-22 Ferrum AG Cartouche centrifuge
DE102006009200A1 (de) * 2006-02-22 2007-08-30 Fima Maschinenbau Gmbh Verfahren für den Betrieb einer Zentrifuge
KR102504659B1 (ko) * 2019-11-18 2023-02-27 주식회사 엘지화학 가압 원심 탈수기

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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EP1797959A1 (fr) * 2005-06-15 2007-06-20 FIMA Maschinenbau GmbH Dispositif de centrifugation amélioré destiné à éviter la contamination croisée
WO2018157141A1 (fr) 2017-02-27 2018-08-30 Translate Bio, Inc. Procédés de purification d'arn messager
EP4008783A1 (fr) 2017-02-27 2022-06-08 Translate Bio MA, Inc. Procédés de purification d'arn messager
WO2022072836A2 (fr) 2020-10-01 2022-04-07 Translate Bio, Inc. Procédés de purification d'arn messager

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