EP2484451A2 - Centrifugeuse à bol plein dotée d'un séchage du gâteau de matière sèche - Google Patents

Centrifugeuse à bol plein dotée d'un séchage du gâteau de matière sèche Download PDF

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Publication number
EP2484451A2
EP2484451A2 EP12000265A EP12000265A EP2484451A2 EP 2484451 A2 EP2484451 A2 EP 2484451A2 EP 12000265 A EP12000265 A EP 12000265A EP 12000265 A EP12000265 A EP 12000265A EP 2484451 A2 EP2484451 A2 EP 2484451A2
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EP
European Patent Office
Prior art keywords
centrifuge
drum
liquid
solid
peeling
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.)
Withdrawn
Application number
EP12000265A
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German (de)
English (en)
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EP2484451A3 (fr
Inventor
Kurt Pauli
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.)
T & A Trenntechnik & Anlagenbau GmbH
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T & A Trenntechnik & Anlagenbau GmbH
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Application filed by T & A Trenntechnik & Anlagenbau GmbH filed Critical T & A Trenntechnik & Anlagenbau GmbH
Publication of EP2484451A2 publication Critical patent/EP2484451A2/fr
Publication of EP2484451A3 publication Critical patent/EP2484451A3/fr
Withdrawn legal-status Critical Current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
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
    • B04B11/082—Skimmers for discharging liquid
    • 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
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof

Definitions

  • the invention relates to a solid bowl centrifuge, in particular for the sedimentation, which is used for separating solid-liquid mixtures (suspensions) in clarified centrifugate (clarified liquid) and a solid cake (sediment).
  • a solid bowl centrifuge comprises a downwardly open solid bowl centrifuge drum rotatable about a vertical axis of rotation, a drum lid for closing the centrifuge drum and a centrifuge bowl arranged in the centrifuge bowl for withdrawing the centrifuge from the rotating centrifuge bowl during a sedimentation operation (cleaning operation) performed with the centrifuge.
  • Sieve drum centrifuges have a sieve-like perforated drum, which is sometimes covered with a filter cloth. They use the centrifugal force to squeeze the filtrate through the sieve or the filter material, whereby solids from the solid-liquid mixture, which can not pass because of their size, are retained. If the filtrate is the desired product, this is referred to as clarification filtration; in the case of separation filtration, the solid forming the solid cake is the desired product.
  • a manually operable solid bowl centrifuge can have a removable drum insert, which can be removed manually from the centrifuge drum together with the solid cake therein for emptying and cleaning.
  • Typical examples of solid-liquid mixtures which are cleaned with such centrifuges are all liquids used in industry, for example in metal, glass or ceramic processing.
  • the liquids may therefore be oils, water, emulsions or other process liquids.
  • the solids contained therein and separated in the centrifuge are very fine (for example, from grinding or erosion processes). Their size is in the range of a few microns to about 1 mm. For example, particles produced during grinding, honing or erosion are typically less than 20 ⁇ m.
  • the centrifuges to which the invention is directed are not primarily for the purpose of recovering the solid from the solid-liquid mixture (separation filtration), but the main purpose is to produce a liquid, i. to clean an oil or other emulsion contaminated with solid particles so that it can be reused (clarifying filtration).
  • the solid must be centrifuged out of the contaminated liquid, but also it is important for the reasons described above that the solid is obtained as dry as possible.
  • a known solid bowl centrifuge, to which the invention relates is usually open at the bottom, so that the solid can be discharged downwards or fall down.
  • the centrifuge drum is a peeling tube with which the cleaned or clarified liquid (the centrifugate), for example, an oil, an emulsion or other liquid, during the centrifuge carried out with the cleaning process (sedimentation) from the rotating drum discharged.
  • This peeling tube is used in the present Application referred to as ZentrifugatClrohr, but could also be referred to as a liquid peeling pipe or cleaning peeling pipe.
  • the Zentrifugattechlrohr is usually fixed, that is arranged at a fixed radial distance from the drum, but may in principle be adjustable to different (radial) positions.
  • the running drum is to be centrifuged solid-liquid mixture via an inlet, usually on the top fed. It is put in the same rotation as the drum. Due to the centrifugal force, a solid cake settles on the inner wall of the drum and in front of it, ie lying in the radial direction in front of the solid cake, forms a liquid column whose liquid level reaches to the ZentrifugatClrohr and is permanently discharged through the Zentrifugattechlrohr.
  • the centrifuging of the centrifuge drum supplied solid-liquid mixture in the sedimentation process is thus carried out at high speed of the centrifuge drum until a sufficiently thick layer of solids deposited on the inside of the centrifuge drum with the solids cake.
  • the thickness of the solids cake that settles on the inside of the drum before it is discharged is typically about 2-3 cm. Thereafter, this layer is peeled off while the drum is running with a paring knife or scratched out. This raises the mentioned problem that the remaining in centrifuging in the solid cake liquid should be as far as possible removed from the solid cake before the solid is discharged from the centrifuge drum.
  • the centrifuge In order to be able to remove almost completely the residual liquid remaining in the centrifuge drum after centrifuging, the centrifuge is first stopped. At standstill, the closing device is opened manually, whereby the outlet side of the filter element is connected via the discharge channel forming a flow path with the centrifuge space surrounding the centrifuge drum and the drum cover. After opening the closing device, the centrifuge is then restarted manually, whereby the residual liquid is thrown through the filter element and the discharge channel into the centrifuge space, from which it can be withdrawn in a known manner. During the drying process, no additional liquid is supplied. After the final drying of the solid cake The centrifuge is stopped and the solids cake or the drum insert can be removed manually.
  • the centrifuge drum is stopped after the sedimentation operation.
  • the liquid from the centrifuge drum and the residual liquid from the solids cake run downwards when the centrifuge drum is stationary.
  • the scraped solid has a very high liquid content, which may for example be up to 60% oil content, because the solid cake is not thrown dry in a drying operation.
  • the wet solid may adhere to the scraper when scraping, so that the centrifuge drum must be rinsed several times before a new sedimentation operation is started.
  • a displacement or diverting device arranged under the centrifuge drum is required in order to separate the rinsing liquid discharged downwardly in or after the removal operation from the solid also discharged downwards in the removal operation.
  • a disadvantage of this known type is that no optimal cleaning of the solid-liquid mixture or no optimal separation of the solid-liquid mixture is achieved in centrifugate and solid, as discharged with the expiring in sedimentation through the holes or holes liquid and solids become. Further, due to the permanent fluid flow, the holes or openings may become clogged by the solids entrained therein. This leads both to imbalances and to the fact that the solid cake can not be dried.
  • centrifugal valves such as ball valves
  • the valve At high speed, ie in sedimentation mode, the valve is closed so that the liquid remains in the drum.
  • the valve opens because of the reduced centrifugal force, and the remaining liquid contained in the solids cake, ie liquid that has not already been withdrawn from the ZentrifugatClrohr, can drain through a released from the valve opening from the drum. In the sedimentation operation, therefore, the liquid is withdrawn through the ZentrifugatClrohr, and as soon as a thick solid cake has formed, the rotational speed of the drum for the drying operation is reduced to a smaller value.
  • valves do not open at high, but only at greatly reduced speed. This has the consequence that the solids cake is not optimally dried at high speed, but only at low speed of the residual liquid contained in it. He therefore still has a relatively high moisture content, which is disadvantageous for the reasons described above.
  • the valves can clog or stick. Therefore, usually at a rotational speed of the drum, which is opposite to the maximum speed used in the cleaning process is reduced, that is, when the valves are opened, the drum and the solid cake again rinsing liquid supplied to clean the valve seat and the channels. This additional flushing fluid must be recycled or treated.
  • valves Nevertheless, the clogging or sticking of the valves allows liquids to escape through the valves during the cleaning process and must be collected separately. In some cases, even a remission lid must be opened and the valve seat manually cleaned or rinsed to service the centrifuge. In addition, the valves must be set in a complex series of tests and occasionally readjusted. Basically, it is disadvantageous in this embodiment that the cleaning and drying process solids can get into the valves and sealing surfaces, the system is very susceptible to interference and the solid is dried only at low speed.
  • centrifuge with a horizontal axis of rotation and a cylindrical centrifuge drum with an open drum bottom is described, which has no arranged inside the centrifuge drum ZentrifugatMlrohr.
  • the centrifuge drum is a Combination of sieve and solid drum and has essentially the function of a basket drum. The manner of solids discharge from the centrifuge drum is unclear.
  • the present invention seeks to provide a vertical Vollmantelzentrifuge, with the deposited in a sedimentation solid cake in a drying operation at high speed can be maximally dried before (at low speed) in a sampling operation with a Paring knife is scraped out.
  • the solid should be as dry as possible, ie discharged in the removal operation, to Disposal costs for its disposal or to be able to continue using it as a valuable raw material.
  • a full-bowl centrifuge according to the invention in particular for sedimentation, for separating solid-liquid mixtures into centrifugate and a solids cake comprising a rotatable about a vertical axis of rotation, downwardly open solid bowl centrifuge drum, a drum lid for closing the centrifuge drum, and a in the centrifuge drum arranged ZentrifugatClrohr for withdrawing the centrifugate from the rotating centrifuge drum during a sedimentation carried out with the centrifuge, thus has the peculiarity that it comprises an annular peeling chamber, which is arranged axially above the drum cover, it has formed in the drum cover connecting openings which a fluid channel form liquid or residual liquid from a deposited on the inside of the centrifuge drum solids cake to the peeling chamber, and they are arranged in the peeling chamber Restfordkeits2020lrohr for Extracting liquid or residual liquid from the peeling chamber, wherein the RestfordkeitsSlrohr is designed such that it can be activated during a drying operation, so that in the drying operation
  • a corresponding inventive method for separating solid-liquid mixtures in centrifugate and a solid cake in particular a method of sedimentation, by means of a Vollmantelzentrifuge
  • the A downwardly open solid bowl centrifuge drum rotatable about a vertical axis of rotation, a drum lid for closing the centrifuge drum, and a centrifuge peeler tube disposed in the centrifuge drum for withdrawing the centrifuge from the rotating centrifuge drum during a sedimentation operation performed with the centrifuge has the corresponding feature in that for centrifuging the solid-liquid mixture a centrifuge is used which comprises an annular peeling chamber arranged axially above the drum cover, which has connecting openings formed in the drum cover which provide a liquid or residual liquid passageway for fluid on the inside of the drum Centrifuge drum deposited solids cake to the peeling chamber, and which comprises a arranged in the peeling chamber residual liquid peeling pipe for removing liquid or residual liquid from the peeling chamber, w obei drying of the sedimentation on the inside
  • the present invention thus improves the properties of the previously known solid bowl centrifuges of the type mentioned above by an annular peeling chamber and a RestfordkeitsSlrohr formed in addition to the ZentrifugatClrohr, which is arranged in the peeling chamber and for withdrawing liquid or residual liquid from the peeling chamber from the solid cake passes through formed in the drum cover connecting openings in the peeling chamber, at maximum speed of the drum is used.
  • the invention is based on the finding that it is possible with these characteristics Vollmantelzentrifugen to dry the solid cake at very high speed maximum before it is discharged from the drum, since in the drying operation, the liquid or residual liquid from the solid cake at a very high speed pass through the connection openings in the peeling chamber and can be removed there with the RestfordkeitsSlrohr.
  • inventive solid bowl centrifuges thus consist in that the solid cake at very high speed of the drum, which corresponds to the maximum speed used in sedimentation, can be dried and optimum cleaning performance is achieved. Ecology and economy complement each other. High disposal costs for the solid cake are avoided, instead it can be recycled, and also by the effective cleaning of the solid-liquid mixture, a cost reduction is achieved.
  • Centrifuges according to the invention ensure the optimum state of the cleaned liquids, for example of lubricants, whereby with the centrifuge both the separation of liquid, e.g. Oil, as well as the separation of solids from a solid-liquid mixture, such as an emulsion, is possible.
  • the dried solid at maximum speed can be recycled or disposed of with the resulting in a production residues such as chips while avoiding the expense of hazardous waste.
  • the residual liquid peeling pipe can in principle also be designed such that during the sedimentation operation, i. simultaneously or instead of ZentrifugatClrohrs, clarified with him clarified centrifugate or residual liquid can be withdrawn from the peeling chamber, so it can be activated not only for the drying operation, but also during the sedimentation. According to a preferred development, however, it is provided that the residual liquid peeling pipe can be deactivated during the sedimentation operation, so that no liquid or residual liquid can be withdrawn from the peeling chamber in the sedimentation operation with the residual liquid peeling pipe. This simplifies the expenditure on equipment, e.g. on valves and control devices, for operating the centrifuge.
  • ZentrifugatClrohr usually also allows due to a larger diameter of its flow cross-sections a larger volume flow than the RestallkeitsSlrohr, so that the ZentrifugatClrohr is usually not waived. In exceptional cases, however, could also be dispensed with the ZentrifugatClrohr; In this case, the claimed, arranged in the centrifuge drum ZentrifugatClrohr coincides with the invention, arranged in the peeling chamber RestallkeitsSlrohr.
  • the inlet opening of the RestfordkeitsSlrohrs or the RestproblemkeitsSWlrohr in the active position in liquid or residual liquid, which is located in the peeling chamber, immersed or retractable is, and in the inactive position of liquid or residual liquid, which is located in the peeling chamber, is extendable.
  • the residual liquid peeling pipe can be, for example, pivotable or linearly movable.
  • the inlet opening of the RestfordkeitsSlrohrs or the RestproblemkeitsSlrohr in the active position relative to the axis of rotation of the centrifuge drum is moved to a diameter which is at least the largest relative to the axis of rotation Outside diameter of the solid cake corresponds.
  • the centrifuge drum does not have a drum insert, the outer edge of the solids cake is identical to the inner wall of the centrifuge drum. In an inserted drum insert, the outer edge of the solids cake is the inner wall of the drum insert.
  • the liquid located between the radially outermost position of the inlet opening of the residual liquid peeling pipe and the outermost edge of the solid cake could not be drawn off through the residual liquid peeling pipe, if the residual liquid peeling pipe does not extend to the outer edge of the solids cake. For the widest possible drying of the waste cake, it is therefore advantageous if the residual liquid peeling pipe can be moved until then or beyond.
  • the inlet opening of the residual liquid peeling pipe or the residual liquid peeling pipe can be moved to a diameter in the inactive position relative to the axis of rotation of the centrifuge drum, which diameter is smaller than the inner diameter of the centrifuge drum Liquid column in the centrifuge drum is, wherein the inner diameter of the liquid column is predetermined in the centrifuge drum by the position of the inlet opening of ZentrifugatClrohrs in sedimentation.
  • the peeling chamber has an annular, axially upwardly closing the peeling chamber Peeling chamber having a smaller inner diameter than the inner diameter of the liquid column in the centrifuge drum, which is determined by the position of the inlet opening of ZentrifugatClrohrs in sedimentation.
  • the inner diameter of the peeling chamber cover that is, the outer diameter of a central opening in the peeling chamber cover
  • the inner diameter of the liquid column of the running centrifuge drum which is determined by the position of the usually fixed ZentrifugatClrohrs in the centrifuge drum. Characterized the liquid column is covered in the centrifuge drum and in the peeling chamber with rotating centrifuge drum up from the peeling chamber cover and does not reach the more inner edge of the central opening in the peeling chamber cover so that they can not overflow over this edge.
  • the residual liquid from the peeling chamber can be removed as completely as possible, it is also advantageous if the relation to the axis of rotation of the centrifuge drum outer edge of the peeling chamber extends to a diameter which is at least the largest relative to the axis of rotation of the centrifuge drum outside Diameter of the solid cake corresponds.
  • the centrifuge has connecting openings formed in the drum cover, which have a fluid channel for liquid or residual liquid from a solid cake deposited on the inside of the centrifuge drum form the peeling chamber and which are formed in relation to the axis of rotation of the centrifuge drum in the radial direction outside in the drum lid at a diameter corresponding to the largest outside diameter of the solids cake relative to the axis of rotation of the centrifuge drum.
  • the connection openings are arranged on the outside of the centrifuge drum, ie the largest drum diameter, in order to ensure that the residual liquid emerges as completely as possible into the peeling chamber and can be removed therefrom by means of the residual liquid peeling tube.
  • connection openings at the largest inner diameter of the drum In addition to the connection openings at the largest inner diameter of the drum, one or more bores may be provided which are arranged at smaller diameters in order to accelerate the outflow of the liquid column from the centrifuge drum through the connection openings and the bores into the peeling chamber.
  • connection openings in the drum cover may have filter elements designed to retain the solid to be separated and allow only the liquid to pass to allow coarse solid to pass from the filter cake into the peeling chamber to prevent. In general, however, such filter elements are not required.
  • a Vollmantelzentrifuge in particular for sedimentation, for separating solid-liquid mixtures in clarified centrifugate and a solid cake
  • a downwardly open solid bowl centrifuge drum rotatable about a vertical axis of rotation
  • a drum lid for closing the centrifuge drum
  • a centrifuge peeler tube disposed in the centrifuge drum for drawing the clarified centrifugate out of the rotating centrifuge drum during a sedimentation operation performed with the centrifuge; that it has a paring knife for discharging the deposited in the centrifuge drum solids cake, which does not rotate with the centrifuge drum during sedimentation, but in the direction of rotation of Zentri Fugentrommel is fixed, and which is designed such that it can be retracted for scraping the solid cake in a removal operation by means of a paring knife drive from the axially down side of the centrifuge drum along the inner wall of the drum
  • a running peeling knife known from the prior art rotates with the centrifuge drum during the sedimentation operation, without there being any relative movement between the peeling blade and the drum wall.
  • the paring knife then moves relative to the drum wall or the drum wall relative to the paring knife, wherein the solid is scraped out.
  • This residue of the solid can get stuck on the paring knife and lead to imbalance in the subsequent cleaning process, ie at high speed of the drum. In this case, usually the drum must again be rinsed and / or scraped.
  • a peeling knife which is fixed relative to the direction of rotation of the centrifuge drum and is not co-rotating with the centrifuge drum, is advantageously used.
  • any drum shape can be used, for example a cylindrical, curved or with different angles successive rectilinear sections provided centrifuge drum when the paring knife has a suitable corresponding feed or path control.
  • the drum inner wall is frusto-conical, at least in a region along which by the peeling knife Feststoffkuchen is ausschabbar, and the peeling knife drive as a linear drive for moving or advancing the peeling knife along a rectilinear path parallel to the drum inner wall is trained.
  • This embodiment is optimal in terms of both manufacturing costs and solids discharge, since no corners, edges and pockets can be left in which solids remain, which can lead to imbalances.
  • FIG. 1 shows an overall section of an embodiment of a solid bowl centrifuge 1 according to the invention for the fully automatic separation of solid-liquid mixtures in clarified centrifugate 2 and a solid cake 3, in particular for sedimentation. It comprises a solid-bowl centrifuge drum 5 rotatable about a rotation axis 4, a drum cover 6 for closing the centrifuge drum 5, and a centrifugal peeling tube 7 arranged in the centrifuge drum for drawing the clarified centrifugate 2 out of the rotating centrifuge drum 5 during a sedimentation operation performed with the centrifuge 1.
  • the drum cover 6 is connected by means of fastening elements 8 with the centrifuge drum 5. Furthermore, an unrepresented safety bolt can be provided which prevents rotation of the drum cover 6 relative to the centrifuge drum 5.
  • the centrifuge 1 is surrounded by a housing 9, which can be closed by a machine cover 10, which is mounted with machine cover fixtures 11.
  • the centrifuge drum 5 is mounted on the drum cover 6 in a bearing 12 and is rotated by means of a motor 13 or geared motor and a transmission belt 14 in rotation about the vertical axis of rotation 4.
  • the drive motor 13 can also be integrated directly into the bearing 12 or arranged along the axis of rotation 4.
  • the centrifuge drum 5 is open at the bottom, so has no or a downwardly open drum bottom.
  • the centrifuge drum 5 may have any shape, i. For example, have a cylindrical, curved or with different angles successive rectilinear sections provided inner wall.
  • the illustrated embodiment shows a preferred embodiment with a frusto-conical centrifuge drum 5 or drum inner wall, which forms a downwardly narrowing cone.
  • the centrifuge drum 5 will have a shape tapering downwards in the axial direction in any way, because then a solid cake 3 settles on the inner wall of the centrifuge drum 5 due to the centrifugal force and lies in front of the solids cake 3 in the radial direction, can form a liquid column in the sedimentation, the liquid level extends to ZentrifugatClrohr 7 and permanently withdrawn through the ZentrifugatClrohr 7 from the rotating centrifuge drum.
  • the downwardly tapering shape of the centrifuge drum 5 results as a result of the requirement that the withdrawal of liquid through the ZentrifugatClrohr 7 from a radially further inward position than the position of the deposited solid cake 3 should lie.
  • the inlet opening of the ZentrifugatClrohrs 7 is preferably arranged in the region of the axially lower end of the centrifuge drum 5, so that the solid cake 3 in the axially overlying area of the widening upward drum inner wall can.
  • the filling of the centrifuge drum 5 with solid-liquid mixture via an unillustrated filling tube, usually on the top of the centrifuge drum 5 or in some embodiments from below into the centrifuge drum 5.
  • an unillustrated filling tube usually on the top of the centrifuge drum 5 or in some embodiments from below into the centrifuge drum 5.
  • acceleration plates 15 Inside the centrifuge drum 5 are acceleration plates 15 for distributing the Solid-liquid mixture arranged.
  • the solid-liquid mixture to be centrifuged is fed to the running centrifuge drum 5 via an inlet, usually via the top, usually continuously. It is set in the centrifuge drum 5 in rotation. The specific heavier solids settle in a solid cake 3 on the drum wall.
  • the drum wall, on which the solid cake 3 deposits in the sedimentation mode is formed by the solid bowl centrifuge drum 5.
  • a drum insert which consists for example of rubber and is removable by means of insert handles, be inserted into the centrifuge drum 5, wherein the inner wall forms the drum wall, where the solid cake 3 deposits.
  • Zentrifugattechlrohr 7 is generally fixed, that is arranged at a fixed radial distance from the drum inner wall or the axis of rotation 4 of the centrifuge drum 5, but can in principle also be adjustable to different (radial) positions.
  • annular peeling chamber 17 is arranged.
  • the diameter of the peeling chamber 17 is greater than its height. It is thus designed annular and could also be referred to as a peeling ring.
  • the lower end of the peeling chamber 17 is formed by the drum cover 6, the upper end of a peeling chamber cover 18.
  • the peeling chamber cover 18 is connected to the drum cover 6 or to the centrifuge drum 5 by means of the fastening elements 8.
  • connection openings 19 serve as a fluid channel for liquid or residual liquid 27 from a deposited on the inside of the centrifuge drum 5 solid cake 3 to the peeling chamber 17.
  • the connection openings 19 are located on the outside of the centrifuge drum 5, i. arranged at the largest inner diameter drum to ensure that the residual liquid 27 can emerge from the solid cake 3 as completely as possible in the peeling chamber 17.
  • further bores 20 are provided radially further inwards in order to allow a faster outflow of the liquid column from the centrifuge drum 5 through the connection openings 19 and the bores 20 into the peeling chamber 17.
  • the peeling chamber 17 thus forms an annular collecting pocket or an annular collecting space for liquid or residual liquid 27 emerging from the solids cake 3 through the connecting openings 19 in the drum cover 6 in the sedimentation mode and in particular in the drying operation.
  • a residual liquid peeling pipe 21 is arranged, which serves for drawing off liquid or residual liquid 27 from the peeling chamber 17.
  • the residual liquid peeling pipe 21 is formed such that it can be activated during a drying operation, so that in Drying operation with the residual liquid peeling pipe 21 liquid or residual liquid 27 from the peeling chamber 17 is removable.
  • the inlet opening of the residual liquid peeling pipe 21 can be in the active position in liquid or residual liquid 27, which is located in the peeling chamber 17, be dipped or retracted. In the inactive position, in particular in the sedimentation operation, it can be swung out or extended from liquid or residual liquid 27, which is located in the peeling chamber 17.
  • the RestproblemkeitsSlrohr 21 for example, be pivotable or linearly movable.
  • the embodiment shows a RestfordkeitsSlrohr 21 which is pivotable about a parallel to the axis of rotation 4 of the centrifuge drum 5 extending pivot axis.
  • the RestfordkeitsSlrohr 21 may be integrally formed in order to achieve optimum tightness or to allow easy production without individual parts sealing gaskets with each other.
  • the supply of solid-liquid mixture is stopped in the centrifuge 1, the RestallkeitsSlrohr 21 pivoted into the liquid in the peeling chamber 17 and the liquid contained in the peeling chamber 17 is with the RestfordkeitsSlrohr 21 deducted. If it is desired to avoid heavy impurities or strong spraying, while the speed of the centrifuge drum 5 can also be reduced.
  • the residual liquid peeling tube 21 can be activated at a high rotational speed of the centrifuge drum 5, which corresponds essentially to the maximum rotational speed of the centrifuge drum 5 used in the sedimentation mode for withdrawing liquid or residual liquid 27 from the peeling chamber 17 ,
  • the residual liquid 27 can be withdrawn from the solids cake 3 via the peeling chamber 17, wherein the withdrawn residual liquid 27 can have a high degree of purity with a reduced solids content which corresponds to that of the centrifugate 2 withdrawn in sedimentation operation.
  • the residual liquid peeling pipe 21 be activated at a high rotational speed of the centrifuge drum 5, which corresponds essentially to the maximum rotational speed of the centrifuge drum 5 used in the sedimentation operation for drawing off liquid or residual liquid 27 from the peeling chamber 17.
  • the solid cake 3 is scraped with a paring knife 23 before resuming the sedimentation first in the removal operation. This is usually done at reduced speed of the centrifuge drum 5.
  • a paring knife 23 for example, pneumatically, electrically or hydraulically driven into the centrifuge drum 5.
  • the propulsion of the peeling blade 23 is usually linear.
  • the scraped, optimally dried solid falls down from the downwardly open centrifuge drum 5 and is collected. Thereafter, the cleaning process in sedimentation operation can start from the beginning, i. the centrifuge drum 5 is driven to maximum speed and new, solid-liquid mixture to be cleaned is fed to the centrifuge drum 5 and centrifuged.
  • the illustrated centrifuge 1 has a paring knife 23 for discharging the deposited in the centrifuge drum 5 solid cake 3, which does not rotate with the centrifuge drum 5 during sedimentation, but is fixed in the direction of rotation of the centrifuge drum 5. It is designed in such a way that it can be moved into the centrifuge drum 5 from the axially lower side of the centrifuge drum 5 along the inside wall of the drum for scraping out the solid cake 3 in a removal operation by means of a peeling knife drive 24.
  • the peeling blade drive 24 is formed as a linear drive for moving or delivering the peeling blade 23 along a rectilinear path parallel to the drum inner wall.
  • solid cake 3 deposited on the inside of the centrifuge drum 5 is discharged from the centrifuge drum 5 in a removal operation with a peeling blade 23 which does not rotate with the centrifuge drum 5 during the sedimentation operation, but is stationary in the direction of rotation 28 of the centrifuge drum 5, and is moved to the scraping of the solid cake 3 in the removal operation by means of a paring knife drive 24 from the axially lower side of the centrifuge drum 5 along the inner wall of the drum in the centrifuge drum 5.
  • the peeling of the solid cake 3 with the peeling blade 23 from the centrifuge drum 5 is advantageously carried out at a reduced rotational speed of the centrifuge drum 5.
  • FIGS. 2 to 4 show individual steps in the operation of the centrifuge 1 according to FIG. 1 ,
  • the FIG. 2 shows the sedimentation, in which the RestfordkeitsSlrohr 21 is in the non-active position, that is pivoted out of the liquid column in the peeling chamber 17.
  • the FIG. 3 shows accordingly FIG. 1 the drying operation in which the RestfordkeitsSlrohr 21 is in the active position, that is pivoted into the liquid column in the peeling chamber 17 in order to deduct the residual liquid 27 can.
  • the FIG. 4 shows the removal operation for discharging the solid cake 3 from the centrifuge drum 5, wherein the peeling blade 23 is fully retracted into the centrifuge drum 5.
  • FIG. 5 shows a plan view of the centrifuge 1 of FIG. 1 with the RestfordkeitsSlrohr 21 in the two end positions, ie in the active position 25 in the drying operation and in the inactive position 26 in sedimentation.
  • the residual liquid peeling pipe 21 is shown here as a pivotable variant. It is a bent tube whose inlet opening 22 is directed counter to the direction of rotation 28 of the rotating centrifuge drum 5.

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EP12000265.4A 2011-02-08 2012-01-18 Centrifugeuse à bol plein dotée d'un séchage du gâteau de matière sèche Withdrawn EP2484451A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011010621A DE102011010621A1 (de) 2011-02-08 2011-02-08 Vollmantelzentrifuge mit Trocknung des Feststoffkuchens

Publications (2)

Publication Number Publication Date
EP2484451A2 true EP2484451A2 (fr) 2012-08-08
EP2484451A3 EP2484451A3 (fr) 2017-06-14

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106622685A (zh) * 2017-01-21 2017-05-10 苏州星亿机械有限公司 一种翻斗离心机
CN106669986A (zh) * 2016-08-29 2017-05-17 江苏圣力离心机制造有限公司 刮刀下卸料全自动沉降离心机
CN108889461A (zh) * 2018-09-04 2018-11-27 江苏赛德力制药机械制造有限公司 一种滤饼清除卧式刮刀离心机
EP3570982A4 (fr) * 2017-01-17 2020-10-14 ET Teknik A/S Centrifugeuse et procédé de maintien de liquide de traitement à l'aide d'une centrifugeuse
CN112642594A (zh) * 2020-12-01 2021-04-13 中天科技光纤有限公司 一种油渣分离装置及油渣分离方法
IT202000015376A1 (it) * 2020-06-25 2021-12-25 Sem Soluzioni Elettriche E Mecc Di Samuel Marton Macchina per il trattamento di una miscela liquido-solido, in particolare per la separazione di una frazione solida da una frazione liquida
CN116712778A (zh) * 2023-07-28 2023-09-08 上海锐拓五金制品有限公司 一种铆接机的滤油系统

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Publication number Priority date Publication date Assignee Title
CN109675728B (zh) * 2018-11-19 2020-12-08 陈露 一种采用磁极相斥原理的水果脱水加工用离心甩干机
CN117548244B (zh) * 2024-01-11 2024-04-09 江苏赛德力制药机械制造有限公司 一种应用在离心机上的残余滤饼刮除结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603610A1 (de) 1976-01-30 1977-08-04 Krauss Maffei Ag Zentrifugentrommel mit seitenfiltration
DE3626314A1 (de) 1986-08-02 1988-02-04 Krauss Maffei Ag Vorrichtung zum trennen von suspensionen
DE3634994A1 (de) 1986-10-14 1988-04-21 Krauss Maffei Ag Zentrifuge
DE4132044C1 (en) 1991-09-26 1992-11-05 Westfalia Separator Ag, 4740 Oelde, De Centrifuge - has plate to direct peeled material to removal channel, located so as to rotate on eccentric unit on the hub
DE19616040C2 (de) 1996-04-23 2002-04-04 T & A Trenntech & Anlagenbau Filtratabzug für eine Vollmantelzentrifuge
DE102008009253A1 (de) 2008-02-15 2009-08-27 Heinkel Holding Gmbh Schälvorrichtung zum Abschälen eines Feststoffkuchenmaterials von der Innenseite einer Trommel einer Zentrifuge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE162276C (fr) *
BE349605A (fr) * 1927-03-12
DE4104752A1 (de) * 1990-02-15 1991-08-22 Krauss Maffei Ag Verfahren zum reinigen des filtermittels einer filterzentrifuge
US5300233A (en) * 1993-02-09 1994-04-05 Dorr-Oliver Incorporated Process of displacement washing in a centrifuge filter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603610A1 (de) 1976-01-30 1977-08-04 Krauss Maffei Ag Zentrifugentrommel mit seitenfiltration
DE3626314A1 (de) 1986-08-02 1988-02-04 Krauss Maffei Ag Vorrichtung zum trennen von suspensionen
DE3634994A1 (de) 1986-10-14 1988-04-21 Krauss Maffei Ag Zentrifuge
DE4132044C1 (en) 1991-09-26 1992-11-05 Westfalia Separator Ag, 4740 Oelde, De Centrifuge - has plate to direct peeled material to removal channel, located so as to rotate on eccentric unit on the hub
DE19616040C2 (de) 1996-04-23 2002-04-04 T & A Trenntech & Anlagenbau Filtratabzug für eine Vollmantelzentrifuge
DE102008009253A1 (de) 2008-02-15 2009-08-27 Heinkel Holding Gmbh Schälvorrichtung zum Abschälen eines Feststoffkuchenmaterials von der Innenseite einer Trommel einer Zentrifuge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106669986A (zh) * 2016-08-29 2017-05-17 江苏圣力离心机制造有限公司 刮刀下卸料全自动沉降离心机
EP3570982A4 (fr) * 2017-01-17 2020-10-14 ET Teknik A/S Centrifugeuse et procédé de maintien de liquide de traitement à l'aide d'une centrifugeuse
CN106622685A (zh) * 2017-01-21 2017-05-10 苏州星亿机械有限公司 一种翻斗离心机
CN108889461A (zh) * 2018-09-04 2018-11-27 江苏赛德力制药机械制造有限公司 一种滤饼清除卧式刮刀离心机
IT202000015376A1 (it) * 2020-06-25 2021-12-25 Sem Soluzioni Elettriche E Mecc Di Samuel Marton Macchina per il trattamento di una miscela liquido-solido, in particolare per la separazione di una frazione solida da una frazione liquida
CN112642594A (zh) * 2020-12-01 2021-04-13 中天科技光纤有限公司 一种油渣分离装置及油渣分离方法
CN116712778A (zh) * 2023-07-28 2023-09-08 上海锐拓五金制品有限公司 一种铆接机的滤油系统

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