EP3229970B1 - Separator - Google Patents

Separator Download PDF

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Publication number
EP3229970B1
EP3229970B1 EP15804094.9A EP15804094A EP3229970B1 EP 3229970 B1 EP3229970 B1 EP 3229970B1 EP 15804094 A EP15804094 A EP 15804094A EP 3229970 B1 EP3229970 B1 EP 3229970B1
Authority
EP
European Patent Office
Prior art keywords
drum
inner drum
separator
axially
top part
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.)
Active
Application number
EP15804094.9A
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German (de)
English (en)
French (fr)
Other versions
EP3229970A1 (de
Inventor
Wilfried Mackel
Thomas Bathelt
Kathrin Quiter
Frank Taetz
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.)
GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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Publication date
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Publication of EP3229970A1 publication Critical patent/EP3229970A1/de
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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
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • 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
    • 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
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
    • 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
    • B04B7/08—Rotary bowls

Definitions

  • the invention relates to a separator according to the preamble of claim 1.
  • Centrifugal separators for the realization of a continuous operation have long been known, so in an embodiment as nozzle separators from the JP 62-117649A , In addition to nozzle separators, those with solids discharge openings are known, to which a hydraulically actuated piston valve is assigned, with which the solids discharge openings can be closed and released.
  • a separator without solids discharge in a training as a separator shows the US 2,017,734
  • a separator with screwed together, massive Trommelunter- and drum tops also shows the US 2,286,354
  • the technological background is also the US 5,637,217 called.
  • the DE 693 21 935 T2 discloses a centrifugal separator for obtaining blood with a disposable plastic centrifuging jacket.
  • the WO 98/40164 discloses a terminal unit which can be placed on a separator with a vertical axis of rotation and two peeling discs for discharging two liquid phases of different density.
  • a generic separator for separating a flowable product into different phases or for clarifying a product comprising a rotatable drum with a drum base and a drum shell and arranged in the drum means for clearing, wherein one, several or all of the following elements Plastic or a plastic composite material consist of the drum base, the drum shell, the means for clarifying.
  • the inlet device and the drainage device are designed such that they extend into the drum, do not rotate with the drum during operation and that they are connected to one another at one or more locations sealed, in particular glued and / or welded.
  • the inlet and outlet system formed in this way is easy to manufacture and, since it does not rotate during operation, is relatively light and can be sealed at only one or very few places relative to the rotating drum. It is particularly advantageous for a separator in which the drum consists of plastic or a plastic composite material.
  • the drum also has an outer support device and a drum disposed within the support device - called inner drum - on.
  • inner drum a drum disposed within the support device - called inner drum - on.
  • a means for clarifying the product to be processed in the centrifugal field in the inner drum - for example, a disk set of conical plates - which improves the clarification process or, analogously, a concentration.
  • the inlet and outlet system as the inlet device has a feed pipe whose central axis mounted in the Condition with the axis of rotation of the drum is aligned and / or that the inlet and outlet system as the drain device one or two or more grippers, which / each having a disc portion and a shaft portion / have.
  • the inlet and outlet system has a single inlet device and two drainage devices, in particular in order to concentrate a product to be processed in that a light phase is separated from it.
  • the grippers are constructed of gripper components, each consisting of a pipe section and an annular disc section.
  • the gripper components each consist of plastic or plastic composite material and that they are preferably each formed in one piece.
  • the drum parts and the individual elements of the inlet and outlet system are preferably successively placed in succession from bottom to top axially superimposed while drum parts on the one hand and elements of the inlet and outlet system for the drum on the other hand at suitable locations welded together and / or bonded.
  • the divider plate can be mounted only when the disc pack and the support body are mounted and the inlet tube with the lower gripper.
  • a cover which is designed as a multi-stepped, circumferentially closed tube with a cylindrical diameter, the stages each axially delimit pipe sections of different diameters and wherein the cover delimiting discharge chambers.
  • annular disk section extends radially outwardly from the cover, which flange abuts the housing and is preferably releasably securable thereto.
  • At least one (preferably only a single) axially acting annular sealing device is further provided between the annular disc portion of the drum shell, in particular an inner drum shell, and the annular disc portion of the cover.
  • the seal between the inlet and outlet system and the drum can therefore be reduced to only a single area, which is inexpensive.
  • any heat development in the region of sliding parts in the region of the preferably single seal between these parts is minimized.
  • a divider plate is arranged or formed, which is preferably provided on the upper side with ribs, so that between the underside of the inner drum shell and the top of the divider plate at least one channel-like gap is formed as a drainage channel.
  • the outer support device is designed as an outer ring, which axially surrounds the inner drum in sections.
  • Such a ring in the manner of a "bandage" stabilizes the construction on the outer circumference.
  • the at least one stabilizing ring (or the plurality of rings) is preferably made of metal, but may also be made of a plastic or a plastic composite material. It is also conceivable to provide a contour, for example an axially open in one direction annular pocket, on the outer circumference of the inner drum, in which the stabilizing ring is inserted.
  • the outer support device is formed as a circumferentially closed outer ring, which surrounds the inner drum axially in sections. It is also conceivable that the outer support device is formed as a grid-like outer ring, which surrounds the inner drum on a specific axial section.
  • the outer support device is formed as an outer drum, which surrounds the inner drum in whole or in sections.
  • the running behavior of the rotating system, in particular the drum is significantly improved in a simple manner, since the outer drum dynamically and mechanically stabilizes the system.
  • Both deflections of the rotating system in the radial direction to the axis of rotation D and the tendency to unbalance can be significantly reduced.
  • Both the inner drum and the support structure can - but need not - be designed relatively thin-walled.
  • preferably to be changed after processing a product batch internal drum can be made very material-saving.
  • the change of the inner drum and its assembly, disassembly and other handling can be carried out in a simple manner, since there is a stable outer drum construction in which the inner drum only has to be used, it is possible the drive connection to an electric motor only on the outer drum be provided so that the inner drum only removed from the outer drum and a different inner drum again in a change this must be used without the need for many complicated assembly steps such as making a drive connection to the drive shaft are necessary.
  • the outer drum can completely surround the inner drum. But there is also already a good stabilization of the rotating system when the outer drum surrounds the inner drum axially only partially, preferably over at least 50% of the axial length of the inner drum or more. In the latter case, it is advantageous if the inner drum protrudes axially out of the outer drum, which makes it easier to clearly separate and space the inlet and outlet areas of the inner drum from the outer drum.
  • the inner drum and the outer drum made of different materials, since in each case the optimal materials can be selected for both elements outer drum and inner drum.
  • the inner drum of a turn preferably relatively thin-walled plastic or a plastic composite, so that they can be easily disposed of and the reusable outer drum made of metal, especially steel, so that their running properties are particularly easy to optimize.
  • the weight of the outer drum can significantly exceed that of the inner drum, so that the rotational behavior is essentially determined by the outer drum.
  • the weight of the rotating parts of the metallic outer drum is more than twice as large, in particular more than four times as large as the weight of the rotating parts made of plastic or as the weight of the empty inner drum.
  • the outer drum has an outer drum base and a detachable outer drum upper part.
  • the inner drum has an inner drum lower part and a herewith preassembled or preassembled inner drum shell has.
  • various elements such as the means for clarifying, a supply pipe and the like., which is simplified by the separation in the upper part and lower part.
  • the assembly of the inner drum in the outer drum when the outer drum shell is formed in the manner of a ring which is bolted to the outer drum base and which is axially formed open at the top, so that the inner drum shell protrudes axially out of it.
  • the outer drum base and the outer drum top can also be connected in other ways.
  • An advantageous variant is a connection with bolts.
  • a bayonet as a connecting means.
  • a lower edge of the outer drum shell is inserted into the outer drum base, where it can rest on a collar.
  • a ring with external thread is screwed from above into an internal thread of the outer drum base, which fixes the outer drum shell on the outer drum base.
  • the inner drum and the outer drum are non-rotatably and / or positively connected with each other rotatably.
  • the inlet and outlet system of the drum are arranged exclusively on the inner drum and on the housing, so that the outer drum does not come into contact with the product to be processed during operation.
  • a part of and preferably even all of the product-contacting areas of the rotating system consist of a plastic or a plastic composite material, in particular the inner drum lower part and the inner drum upper part and the disk package.
  • the inlet and outlet system made of plastic or a plastic composite material.
  • all the parts of the inner drum that rotate during operation and the parts of their supply and drainage system that does not rotate during operation - if they come into contact with the product - are made of plastic - and if all in all - except possibly to be provided seals - in number only a few parts, eg Plastic injection molded parts, are provided.
  • these are the inner drum base, the inner drum shell, the manifold, the separation means (preferably the plate insert for separating solids), a separator plate and the inlet and outlet system with the grippers and the feed tube, which do not rotate.
  • the inner drum base and the inner drum shell are permanently connected to each other during initial assembly, to prevent attempts to disassemble them and reuse if necessary after inadequate cleaning. Instead, the inner drum is completely disposed of or recycled. This is also advantageous that the sterility is guaranteed.
  • the design is preferably such that no air can penetrate from the outside into the inner drum before installation and after removal.
  • the plastic used is preferably a recyclable plastic, in particular PE (polyethylene), PP (polypropylene) or TK-PEEK (in particular semicrystalline) polyether ether ketone. Also conceivable are u.a. (and this is not an exhaustive list) the materials PC (polycarbonate)), MABS (methyl methacrylate-acrylonitrile-butadiene-styrene), ABS (acrylonitrile-butadiene-styrene) and PSU (polysulfone).
  • PE polyethylene
  • PP polypropylene
  • TK-PEEK in particular semicrystalline polyether ether ketone.
  • PC polycarbonate
  • MABS methyl methacrylate-acrylonitrile-butadiene-styrene
  • ABS acrylonitrile-butadiene-styrene
  • PSU polysulfone
  • the parts made of plastic could be produced by injection molding and optionally post-processed, e.g. be provided with holes and the like, where necessary.
  • Screws and the like Can also be made of plastic, but they can, especially if they are not touched by the product during processing, also be made of a different material.
  • Fig. 1a shows a section through the region of a housing 1 and a drum 2 of a separator according to the invention, with which a liquid product in the centrifugal field can be separated into two phases.
  • the drum 2 has a vertical axis of rotation D.
  • the housing 1 has a lower bottom 3, a housing shell 4 and an upper cover 5.
  • the bottom 3 in turn has a passage 6, which is penetrated by a rotatable drive spindle 7.
  • a drive motor 8 is arranged directly below the bottom 3.
  • Alternative embodiments are conceivable, for example one in which the drive spindle 7 is driven by a drive belt or the like, the drive motor then being arranged elsewhere.
  • a direct drive in particular according to the type Fig. 1a in which the drive shaft of the motor is arranged directly in the vertical extension of the drive spindle 7. It is preferably dispensed with a separate storage of the spindle design, which makes the construction simple and relatively inexpensive feasible. This construction is simple and robust and very suitable for the lightweight drum construction.
  • the function of the storage of the drum takes over in a simple manner, the electric motor or its rotor bearing On the vertically upper end of the drive spindle 7, in turn, the drum 2 is mounted non-rotatably relative to the drive spindle 7, so that they can be rotated by the drive spindle 7 and the drive motor 8 in rotation.
  • the drive spindle 7 could be rotatably mounted in the housing 1, here in the bottom 3, with one or more bearings. But it can also be dispensed with such storage. Here, therefore, a gap 9 between the outer circumference of the drive spindle and the inner periphery of the passage 6 of the bottom 3 is formed.
  • the drive spindle 7 is coupled directly to the output shaft of the motor and that the drive spindle 7 has no additional pivot bearing - for example, no neck bearing and no condimentlager - on its outer circumference.
  • no spring system for resilient support in the region of the drive spindle is provided.
  • the drum 2 has an outer drum 11, which may also be formed as an outer drum section - and an inner drum 12.
  • the inner drum 12 is exchangeably inserted into the outer drum 11.
  • the outer drum section or the outer drum 11 and the inner drum 12 are made of different materials.
  • the outer drum 11 is made of metal, in particular of steel
  • the inner drum 12 is preferably entirely or at least partially made of a plastic or a plastic composite material.
  • the outer drum 11 serves as a kind of holder, in which the inner drum 12 is inserted and which the inner drum 12 in the vertical or axial direction at least partially completely surrounds or surrounds.
  • the outer drum 11 and the inner drum 12 are rotatably connected to each other. This can be realized in particular by a positive and / or positive connection between the outer drum 11 and the inner drum 12.
  • the outer drum 11 has an outer drum lower part 13, which can be designed essentially like the lower drum part of known separators without an inner drum or is here.
  • the outer drum base 13 is rotatably mounted on the drive spindle 7 and preferably has on the inside a simple or here particularly preferably double conical inner shape.
  • the outer drum 11 further preferably has an outer drum upper part 14.
  • the outer drum lower part 13 and the outer drum upper part 14 preferably have corresponding threads, in the region of which they are screwed directly to one another.
  • the thread of the outer drum base portion is formed as an internal thread of the drum base and the thread of the outer drum shell 14 as a corresponding external thread.
  • the outer drum shell 14 is also conical. It is further formed as a ring which is rotatably connected below with the outer drum base 13 and which is open at the top, so that the inner drum 12 vertically or axially upwardly out of the outer drum, here from the outer drum shell 14 protrudes.
  • the outer drum base 13 and the outer drum shell 14 are preferably made of metal, in particular steel, and preferably at least the drum base is designed as a separator drum without inner drum 12, they can provide largely the smoothness and stability and safety of a known modern separator drum made of metal. Since the outer drum 11 surrounds the inner drum 12 partially or completely on the outside, the outer drum stabilizes the inner drum. In particular, the outer drum 11 advantageously contributes to optimizing the running properties of the entire drum 2 during operation at high speed. In addition, the wall thickness of the inner drum 12 can also be chosen much thinner than that of a separator drum made entirely of plastic without outer drum 11, as in the WO 2014/000829 A1 proposed. It should be noted that an inlet and outlet system to be described, but also in constructions
  • the inner drum 12 limits to the outside the actual separating or centrifugal space 15 for the centrifugal processing of a flowable product.
  • the inner drum 12 is configured in such a way that it preferably rests substantially directly on the inner circumference of the outer drum in a form-fitting manner.
  • the inner drum 12 has an inner drum base 16 and an inner drum upper part 17.
  • the inner drum base 16 and the inner drum shell 17 are each conical, so that a biconical body is formed.
  • the parts 16 and 17 are made of plastic or a plastic composite material and are liquid-tightly connected to each other, in particular in the upper (inner drum base 16) and lower (inner drum shell 17) flange portions 18, 19 (see Fig. 1c ).
  • a cohesive connection between the inner drum base 16 and the inner drum shell 17 and possibly other elements of the inner drum 12 is provided, which can be achieved in the sense of this document, for example, by a fusion but also by gluing. This is especially in Fig. 1c clearly visible.
  • connection can also be other types of connection conceivable, such as a bayonet or screw or snap or snap lock between the elements to be connected inner drum base 16 and inner drum shell 17 (not shown here). These can each also complement the cohesive connection.
  • a rotary axis D coaxially surrounding distributor 21 or arranged which has a complete manifold for introducing the centrifuged into the inner drum interior or centrifugal space 15th and for accelerating the centrifuged material in the circumferential direction during rotations of the drum 2 is formed.
  • the distributor 21 has a lower conical section 22 and an upper tube section 23, which is aligned concentrically with the axis of rotation D and is open at the top ( Fig. 1a and 1b ).
  • This pipe section 23 opens at the lower end in the one or more of the distribution channels 24 which are formed obliquely to the axis of rotation and open on a radius preferably outside of a disk package 25 in the actual centrifugal space 15.
  • separating means or means for clarification in particular the aforementioned one-piece or preferably multi-part plate package 25 are arranged, which is formed as a stack of axially spaced separating plates 26 which have a conical basic shape and which are preferably placed against rotation on the distributor lug 21.
  • the separation means for clarification could also be formed in other form, such as ribbed bodies with radial or arcuate ribs.
  • the separation plates 26 have the same or different radii.
  • the manifold approach or manifold 21 may also be integrally formed with the means for clarification, if this as a clear plastic insert with clarification chambers of the type DE 10 2008 052 630 A1 is trained.
  • An introduced into the inner drum interior or centrifugal space 15 product is separated in the drum 2 in different, preferably two, product phases of different density.
  • an inlet and outlet system 27 For the supply and discharge of the various product phases from the drum 2 is an inlet and outlet system 27 with at least one inlet device and at least two drainage devices (see, in particular Fig. 1b ).
  • the inlet and outlet system has a circumferentially closed inlet pipe 28 with preferably cylindrical cross-section, the center axis of which is aligned in the mounted state with the axis of rotation D of the drum.
  • the inlet and outlet system further comprises at least one or preferably two grippers 29, 30 - also called peeling disks. Neither the feed pipe 28 nor the two grippers 29, 30 rotate with the drum during operation. Instead, they are still in operation.
  • the inner drum shell 17 rotates during operation about the inlet and outlet system 27th
  • the two grippers each have a disc portion 29a, 30a and a shaft portion 29b, 30b.
  • the shank portions 29b, 30b are concentric with the feed pipe 28 and formed with each other.
  • the grippers 29, 30 serve several gripper components, each consisting of a pipe section and an annular disc portion, wherein the annular disc portion extends radially to the pipe section in each case.
  • the gripper components are preferably each made of plastic or plastic composite material. They are also preferably each formed in one piece.
  • the innermost and first of the gripper components is formed from the inlet pipe 28 and a radially extending to the inlet pipe 28 - here in an approximately axially central region of the inlet pipe 28 - extending annular disc lug 31.
  • a second, third and fourth of these gripper components - 32, 33, 34 - are also each formed from a pipe section 35, 36, 37 and to this pipe section at the end of the pipe section radially extending annular disk shoulder 38, 39, 40.
  • the tube sections 35, 36, 37 preferably and advantageously each have different inner diameters, so that the tube sections 35, 36, 37 are axially slidable into one another.
  • the pipe section 35 of the second gripper component 32 is larger than the outer diameter of the feed pipe 28, over which it is pushed concentrically, such that between the outer diameter of the feed pipe 28 and the inner diameter of the pipe section 35 of the second gripper component 32, a drain passage 41 is formed.
  • the annular disk shoulder 38 of the second gripper component 32 is axially spaced from the first annular disk shoulder 31 on the feed pipe 28 (which together also corresponds to the first gripper component). designed such that these two annular disc lugs 31, 38 together form the disc portion 29 a of the first gripper 29.
  • at least one radial outlet channel 42 is likewise formed in this way, which opens into the axial outlet channel 41. Webs on the annular disc lugs 31, 38 can limit the channel 41.
  • the third and the fourth gripper components 33, 34 jointly form the second gripper.
  • the pipe section 36 of the third gripper component 33 is larger than the outer diameter of the pipe section 35 of the second Greiferbaulementes 32, over which it is pushed concentrically, such that it rests directly on the outer diameter of the pipe section 35 of the second gripper component.
  • the second gripper component 32 and the third gripper component 33 are connected to each other, in particular welded or glued. This connection is preferably at least at the ends of the pipe sections 35, 36, so that a gap between the pipe sections 35, 36 sealed sealed.
  • the annular disk shoulder 39 of the third gripper component 33 is arranged offset axially relative to the annular disk shoulder 38 of the second gripper component 32.
  • the pipe section 37 of the fourth gripper component 34 is larger than the outer diameter of the pipe section 36 of the third gripper component 33, over which it is pushed concentrically, such that between the outer diameter of the pipe section 36 of the third gripper component 36 and the inner diameter the tube section 37 of the fourth gripper component 34, an axial flow channel 43 is formed.
  • the annular disc extension 40 of the fourth gripper component 34 is formed axially spaced from the annular disc extension 39 on the third gripper component 33 such that these two annular disc attachments 39, 40 together form the disc portion 30a of the second gripper 30.
  • at least one radial outlet channel 44 is likewise formed in this way the axial flow channel 43 opens. Webs on the annular disc sections (in the axial direction) can limit the at least one radial outflow channel 43.
  • a cover 45 is set.
  • This is designed as a multi-stepped, circumferentially closed tube with a cylindrical diameter, wherein the steps 46, 47, 48 respectively axially delimit pipe sections 49, 50, 51, 52 of different diameters.
  • the first pipe section 46 advantageously and simply forms a connecting piece (for a hose or the like). He lies vertically or axially above the inlet pipe 28 and aligned with this.
  • the first stage 49 abuts axially on the end of the inlet pipe.
  • the second pipe section 50 engages over the outside of the inlet pipe 28.
  • the second pipe section 50 and the inlet pipe 28 are connected to each other (connecting portion 53), in particular welded or glued, so that a gap between the inlet pipe 28 and the cover 45 is sealed sealed.
  • the second step 47 is formed, which is followed by the third pipe section 51 downwardly bounding the outside of a discharge chamber 54 for the first gripper 29, the inner circumference of the outer circumference of the supply pipe 28 is formed.
  • a connection piece 55 is formed on the outer circumference of this discharge chamber 54.
  • the third pipe section 51 of the cover 45 engages over the outside the pipe section 36 of the third gripper component or the first gripper 29.
  • the third pipe section 51 of the cover 45 and the first gripper 29 are connected to each other (connecting portion 56), in particular welded or glued, so that a Gap sealed between these elements is sealed.
  • the third step 48 is formed, to which the fourth pipe section 52 adjoins, defining on the outside a discharge chamber 57 for the second gripper 30, whose inner circumference is formed by the section 35.
  • a connecting piece 58 is formed on the outer circumference of this discharge chamber 57 .
  • a hose or the like for derivation can be applied (not shown here)
  • the fourth pipe section 52 of the cover 45 engages over the outside of the pipe section 37 of the fourth gripper component or the second gripper 30.
  • the fourth pipe section 52 of the cover 45 and the second gripper 30 are connected to each other (connecting region 59), in particular welded or glued, so that a gap between these sections is sealed sealed.
  • annular disc section 60 extends radially outward. This annular disc portion of the cover 45 is located below the housing 1 flange on this.
  • the housing 1 and the cover 45 are preferably releasably connected to each other in this area, for example by means of one or more bolts 61.
  • the cover 45 protrudes vertically upward through a central opening of a cover 5 of the housing 2.
  • a divider plate 62 (see also Fig. 1b ), so that between the bottom of the inner drum shell 17 and the top of the disc plate 62, a gap 63 is formed as a drainage channel.
  • a support body 20 Above the divider plate 62 is also a support body 20, here a support ring to ensure the stabilization of the construction above the Tellerpaktes and to ensure a defined fit of the Tellerpaktes.
  • a heavier liquid phase (or a solid phase which is still just able to be discharged, in particular just a little flowable) is discharged from the area of the largest inner circumference of the drum interior through the gap 63 or a channel in the gap between the inner drum upper part 17 and the separator plate 62 from the centrifugal space.
  • the divider plate 62 and the inner drum upper part 17 merge into cylindrical sections 64, 65 at their axially upper ends. At the vertically upper ends extending from these cylindrical portions 64, 65 each radially annular disc portions 66, 67 radially inwardly.
  • the annular disc portion 66 of the cylindrical portion of the divider plate 62 extends radially between the disc portions 29a, 30a of the two grippers 29, 30.
  • the annular disc portion 67 of the cylindrical portion 65 of the inner drum top 17 extends radially inwardly above the disc portion 30a of the second gripper 30.
  • radially annular disk contour 68 annular disk-like inwards. This may be formed as a radial projection of the distributor 21 or otherwise, e.g. as an approach of the Scheidetellers.
  • gripper chambers 69, 70 are formed in the interaction of the cylindrical sections 64, 65 and the annular disk sections and contours 66, 67, 68. From the gap 63, the heavier phase flows through the gap between the two cylindrical sections to the upper gripper chamber 70, where the second gripper 30 derives this phase.
  • a channel 71 further directs the easier phase flowing radially inward from the separator plate package 25 into the first lower gripper chamber, from which the first gripper 29 derives the lighter phase.
  • Ribs 77, 78 on the annular disc section 66 and preferably ribs 79 on the annular disc section 67 and preferably ribs 80 and ribs 81 on the distributor 21 and on the support body 20 ensure that the corresponding product phases are carried along during operation of the centrifuge.
  • the inlet and outlet system is advantageous and structurally simple designed as not in operation with the inner drum rotating system, ie, the inner drum 12 rotates during operation relative to this or about this supply and drainage system 27.
  • an axially acting ring sealing device 72 is therefore preferably and advantageously provided between the annular disc portion 67 of the inner drum shell 17 and the annular disc portion 60 of the cover 45.
  • This can be spring-loaded and / or be designed sliding ring seal similar.
  • the inner drum 12 is positively and / or non-positively connected to the outer drum 11.
  • a non-positive connection can be realized in that the flange 18 and 19 and possibly also the outer edge of the divider plate 62 I extend into the Verschraubungs Scheme between the outer drum base and the outer drum shell, where they rest respectively on gradations of these parts and the Screwing the drum shell in the drum base is screwed between these ( Fig. 1c ).
  • interlocking means such as ribs on the outer circumference of the inner drum and corresponding grooves on the inner circumference of the outer drum 11 may be provided, which engage with each other and thus rotatably connect the two elements inner drum 12 and outer drum 11 (not shown here).
  • the inner drum 12 will expand radially against the inner circumference of the outer drum 11, which improves the torque transmission and rotating entrainment of the inner drum 12 by the driven outer drum 11.
  • the product-contacting areas of the rotating system are preferably made of plastic or plastic composite material, in particular the inner drum base 16 and the inner drum shell 17.
  • the separation plates 26 are made of plastic as well as all product-contacting areas of the feed - and drainage system, even if they do not rotate during operation.
  • the inner drum 12 can be disposed of after processing a sufficiently large product batch.
  • the preferably metallic outer drum 11, however, is reused. Since they can not come into contact with the product during operation, their cleaning is very simple or less important. Through the outer drum 11, the inner drum 12 can be made quite thin. With a complete disposal falls accordingly very little plastic waste.
  • Fig. 1 shows an embodiment as a two-phase separation machine (separation of a product in the phases: "liquid / liquid”), three-phase machines (for separation into three phases) are also feasible (not shown here).
  • the product is preferably, but not necessarily, a fermentation broth to be concentrated
  • the entire inner drum together with the inlet and outlet system is preferably designed as a replaceable preassembled module made of plastic or a plastic composite material.
  • the outer drum section 11 essentially serves as a holder for the inner drum 12, which in particular improves the running properties of the inner drum 12.
  • the design of the outer drum shell as a ring is optimized in the trial. In this case, it can be determined up to which conical region the annular outer drum cover or the outer drum upper part must surround the inner drum upper part.
  • the housing 1 has the bottom 3, a conical housing shell 4 and the cover 5 here. Only in the area of the cover 45 of the inlet and outlet system 27 does the housing 1 come into contact with the plastic area disposable after operation.
  • the cover is suitable - preferably with bolts 75 - attached to the housing shell 4 ( Fig. 1b ).
  • the housing shell 4 is also suitable to the bottom 3 - preferably with bolts 76 - attached. ( Fig. 1b ).
  • These bolts 75, 76 (or other suitable connection means) are detachably arranged to allow easy replacement of the inner drum 12.
  • the housing 1 is opened (bolts 75, 76) and the bolts 61 are released to the cover 45 of the inlet and outlet system 27. Then the inner drum 12 is replaced and possibly disposed of.
  • the cover 5 should preferably have such a large central opening that it can be plugged from above over the cover 45 of the inlet and outlet system with its inlet and outlet nozzles and possibly attached hoses, which after assembly only to external connections must be connected. In this way, the assembly of the inner drum after removal of the outer drum upper part is particularly easy and quick to implement.
  • the hoses can be closed at the ends, for example, welded and are cut off during commissioning and closed again after commissioning. This can also be realized with brackets.
  • the entire inner drum 12 is designed sanitary.
  • the housing 1 can be used to rest on a foundation or a frame 74 or a kind of table or cabinet.
  • the housing 1 has a drain opening 73, preferably in its bottom 3, through which possibly liquid can flow - which occurs in the housing, for example due to an unforeseen leakage or which would otherwise collect there.
  • a drain such as a drain hose for discharging this liquid can be arranged in a container.
  • the drive motor is preferably an electric motor, which is arranged directly in the axial extension of the drive spindle 7, preferably on the side facing away from the drum side.
  • the drive spindle 7 is connected directly to a bolt axially with the output shaft 10. It is also connected to a torque transmitting means, preferably a key, in the circumferential direction with the output shaft of the electric motor rotatably connected (not shown here).
  • the torque transmission means may also be formed in another form - for example as a torque transmission contour - (not shown here in each case).
  • a terminal box 75 is arranged at the motor 8.
  • the rotatable drum 2 may be connected to the drive spindle structure with a press fit (eg, in a conical section) or by means of another torque transmitting means (not shown).
  • the motor 8 is here attached to its spindle 7 side facing further with a flange at the bottom of the housing 1, for example screwed with bolts. On the motor 8, a terminal box is also arranged.

Landscapes

  • Centrifugal Separators (AREA)
EP15804094.9A 2014-12-10 2015-11-27 Separator Active EP3229970B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014118289.8A DE102014118289A1 (de) 2014-12-10 2014-12-10 Separator
PCT/EP2015/077910 WO2016091617A1 (de) 2014-12-10 2015-11-27 Separator

Publications (2)

Publication Number Publication Date
EP3229970A1 EP3229970A1 (de) 2017-10-18
EP3229970B1 true EP3229970B1 (de) 2019-01-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15804094.9A Active EP3229970B1 (de) 2014-12-10 2015-11-27 Separator

Country Status (7)

Country Link
US (1) US10780445B2 (tr)
EP (1) EP3229970B1 (tr)
JP (1) JP6726202B2 (tr)
CN (1) CN106999956B (tr)
DE (1) DE102014118289A1 (tr)
TR (1) TR201905262T4 (tr)
WO (1) WO2016091617A1 (tr)

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US11878311B2 (en) 2011-11-21 2024-01-23 Pneumatic Scale Corporation Centrifuge system for separating cells in suspension
DE102017103065B4 (de) * 2017-02-15 2021-01-21 Flottweg Se Auslasseinrichtung eines Separators
DE202018102027U1 (de) * 2018-04-13 2019-07-18 Gea Mechanical Equipment Gmbh Zentrifuge mit Trommelwerkzeug
KR102568314B1 (ko) * 2018-06-08 2023-08-18 뉴메틱 스케일 코포레이션 현탁액 내 세포를 분리하기 위한 원심 분리 시스템
US11957998B2 (en) 2019-06-06 2024-04-16 Pneumatic Scale Corporation Centrifuge system for separating cells in suspension
CN115379902A (zh) * 2020-02-06 2022-11-22 波特研究公司 离心机以及有关系统和方法
EP3868477A1 (en) * 2020-02-18 2021-08-25 Alfa Laval Corporate AB Centrifugal separator for separating a liquid mixture
JP7142947B2 (ja) * 2020-03-11 2022-09-28 チャン タイ チン ミー クー フェン ユー シェン コン スー 油水分離器の分離筒用カバー装置
EP4000739A1 (en) * 2020-11-12 2022-05-25 Alfa Laval Corporate AB Centrifugal separator comprising a disc stack

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Also Published As

Publication number Publication date
JP2017537790A (ja) 2017-12-21
WO2016091617A1 (de) 2016-06-16
CN106999956A (zh) 2017-08-01
JP6726202B2 (ja) 2020-07-22
US20170333915A1 (en) 2017-11-23
TR201905262T4 (tr) 2019-05-21
US10780445B2 (en) 2020-09-22
EP3229970A1 (de) 2017-10-18
CN106999956B (zh) 2019-06-21
DE102014118289A1 (de) 2016-06-16

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