Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
  • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B11/00—Feeding, charging, or discharging bowls
  • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B11/00—Feeding, charging, or discharging bowls
  • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
  • B04B11/05—Base discharge
• • 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
  • B04B7/04—Casings facilitating discharge
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
  • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings

Definitions

• the invention relates to equipment for separating liquids and solids in centrifuges, in particular plate separators with automatic discharge.
• the invention relates to a paste deflection ring with an annular baffle for a self-discharging centrifuge and the self-discharging centrifuge.
• Disc separators are centrifuges equipped with a central inlet for the suspension and conical plates in the drum, which serve as separators for fine particles due to the centrifugal force and the short sedimentation paths.
• the separated particles slide along the plates into the solids collection space towards the largest diameter of the drum.
• the clarified liquid is depressurized via an overflow weir or by means of a so-called pump impeller. Gripper removed under pressure.
• plate separators with a closed drum are used, which have to be cleared by hand.
• the drums are equipped with an emptying system, which allows the entire contents of the drum to be discharged with solid and liquid as sludge.
• Plate separators with a standing or hanging drum are known.
• the centrifuge container is cylindrical in the area of the centrifugal zone of the drum.
• the paste is discharged under centrifugal acceleration in a horizontal direction on a circular circumference and could be collected in an annular container.
• the invention relates to a device consisting of a paste deflection ring and a paste container which is connected or detachable and which is capable of receiving the paste from several drum empties.
• This ring is designed so that a redirection is associated with the lowest possible product losses.
• the invention relates to a paste deflection ring with an annular baffle for a self-discharging centrifuge, characterized in that the angle of attack ⁇ of the tangents of the baffle of the deflection ring opposite the discharge slot of the centrifuge to the horizontal over the entire opening width of the discharge slot is preferred from 3 to 60 ° Is 10 to 30 °.
• a special deflection ring is characterized in that the inner contour of the baffle wall is circular or parabolic in shape directly below the impact surface, in particular seen over any longitudinal section of the deflection ring.
• the deflection ring is designed such that the baffle in the
• Area below the discharge slot has a curved inner contour seen in the geometric longitudinal section with a radius of curvature of> 20 mm, preferably from 30 to 50 mm.
• the latter curved wall surface can also correspond to a curve with the
• the baffle wall of the deflection ring has an angle of attack ⁇ to the horizontal of 3 to 30 °, preferably 5 to 15 °, in the region above the opening width of the discharge slot.
• a preferred variant of the deflecting ring is characterized in that the tangent of the inner contour of the impact surface in the region below the deflecting contour of the deflecting ring has an angle of attack of ⁇ to 30 °, preferably 5 to 15 °, with respect to the vertical in geometrical longitudinal section.
• the vertical is parallel to the axis of rotation of the drum.
• the deflection ring has a tear-off edge at its lower end, which is optionally undercut.
• the deflecting ring is in particular connected in one piece to a collecting container or particularly preferably in a separable manner to the collecting container of the centrifuge.
• the deflection ring is designed with jacket cooling.
• the cooling jacket is e.g. a double wall on the outer circumference of the deflection ring, which can be flowed through by a heat exchange medium.
• the surface of the deflection ring in contact with the product is provided with a lubricious coating, in particular made of PTFE or metal alloys.
• the deflection ring has one or more nozzles for spraying in liquid nitrogen.
• Impact surface which corresponds to the opening width of the discharge slot, is distributed.
• the invention also relates to a self-discharging centrifuge for the processing of highly concentrated pastes, at least consisting of an optionally coolable housing, a feed line for the suspension, a discharge line for the clarified liquid, a hanging drum connected to the overhead drive part with two or more discharge slots, an optionally removable container and a discharge device for the paste, characterized in that the centrifuge has a deflection ring according to the invention.
• the collecting container is preferably configured conically narrowing downwards or downwards.
• the conical narrowing of the collecting container facilitates the discharge of e.g. frozen product from the container.
• the upper edge of the container is in particular designed in such a way that a flow with little swirling occurs below the tear-off edge of the deflection ring which is preferably attached.
• the product-contacting inner surfaces of the collecting container are also provided in a preferred embodiment with a lubricious coating, in particular made of PTFE or metal alloys.
• a bag made of flexible material is particularly preferably inserted into the collecting container and can be fixed to the container walls in particular by means of negative pressure.
• Suitable materials for the bag are all plastic foils, in particular polypropylene, polyethylene, polyvinyl chloride.
• the collecting container is in a preferred further form of the centrifuge with a
• Temperature control device in particular designed with jacket cooling.
• the collecting container preferably has additional means for transport, in particular by means of floor conveying devices.
• the upper opening of the collecting container is particularly preferably designed as a partial flange.
• the collecting container can be closed, for example with a lid, and is designed in such a way that it can be docked on to other process engineering devices, in particular to a release kettle.
• the collecting container is designed to be jacket-coolable.
• one or more nozzles can be attached, through which liquid nitrogen can be introduced into the gas space in the vicinity of the rotating drum in order to suppress the heating of the discharge space by air friction.
• Plate separators are known which can be cleaned automatically by cleaning-in-place.
• the separator is partially special operating conditions rinsed with various cleaning fluids.
• Special CIP nozzles can be attached to support cleaning. The design of the components and the seals between the components is good
• the container can be made of metallic or non-metallic materials.
• the container can be arranged detachably or non-detachably in a frame which is transported or stackable by means of industrial trucks.
• the container can be provided with a lid or equipped with an automatic opening slider and can be used to load loosening kettles.
• the container can be equipped with a mashing or melting device, which allows the content to be conveyed as a flowable suspension into the dissolving kettle.
• the container can also be equipped with jacket cooling, for example for use in bio-technology.
• jacket cooling for example for use in bio-technology.
• FIG. 2 shows an enlarged detail of the longitudinal section according to FIG. 1
• a biological paste which is obtained during the fractionation of human blood plasma, is discharged from a centrifuge drum 14 with an outside diameter of 468 mm at a drum speed of 7000 l / min and deflection of the blood plasma paste through a paste deflection ring 4.
• the centrifuge 1 points a drive part 13 for driving the drum 14 with a feed line 11 for the plasma.
• the drum 14 hangs in a separable lower part of the centrifuge 1, which has the casing 10, with feed lines 19 and feed lines 22 for a cooling liquid and feed lines 9 for liquid nitrogen, the deflection ring 4 and the
• Containers 7 includes.
• the collecting container has a cooling jacket 16 with feed lines 20 and discharge lines 21 and welded-on transport brackets 18.
• the drum 14 also has an outlet 12 for the clarified liquid.
• Fig. 2 shows the deflection ring 4 in detail.
• the angle ⁇ above the opening width of the discharge slot 3 is also inclined by 15 ° to the horizontal, so that the impact surface 8 itself and the area above it form a straight line in the projection.
• the discharged paste is viewed through a circular contour, viewed in longitudinal section, with a radius of curvature r of 45 ° in the direction
• the paste deflection ring 5 has a tear-off edge 6 at its lower end.

Landscapes

• Centrifugal Separators (AREA)

Applications Claiming Priority (3)

Publications (3)

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ID=7692447

Family Applications (1)

Country Status (10)

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Family Cites Families (32)

• 2001
  • 2001-07-19 DE DE10135317A patent/DE10135317A1/de not_active Withdrawn
• 2002
  • 2002-07-08 AT AT02747462T patent/ATE460229T1/de active
  • 2002-07-08 CA CA2453975A patent/CA2453975C/fr not_active Expired - Fee Related
  • 2002-07-08 JP JP2003513702A patent/JP4301939B2/ja not_active Expired - Fee Related
  • 2002-07-08 WO PCT/EP2002/007563 patent/WO2003008105A1/fr active Application Filing
  • 2002-07-08 EP EP02747462.6A patent/EP1414582B2/fr not_active Expired - Lifetime
  • 2002-07-08 DE DE50214269T patent/DE50214269D1/de not_active Expired - Lifetime
  • 2002-07-08 DK DK02747462.6T patent/DK1414582T4/da active
  • 2002-07-08 CN CN02814480.5A patent/CN1290622C/zh not_active Expired - Fee Related
  • 2002-07-08 US US10/482,547 patent/US7204795B2/en not_active Expired - Lifetime
• 2005
  • 2005-03-22 HK HK05102499A patent/HK1069141A1/xx not_active IP Right Cessation

Non-Patent Citations (1)

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