EP1782888A1 - Buse de jet pour le rotor d'une centrifugeuse et le rotor d'une centrifugeuse avec tels buse de jet - Google Patents

Buse de jet pour le rotor d'une centrifugeuse et le rotor d'une centrifugeuse avec tels buse de jet Download PDF

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Publication number
EP1782888A1
EP1782888A1 EP06022362A EP06022362A EP1782888A1 EP 1782888 A1 EP1782888 A1 EP 1782888A1 EP 06022362 A EP06022362 A EP 06022362A EP 06022362 A EP06022362 A EP 06022362A EP 1782888 A1 EP1782888 A1 EP 1782888A1
Authority
EP
European Patent Office
Prior art keywords
rotor arm
rotor
recoil nozzle
recoil
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06022362A
Other languages
German (de)
English (en)
Other versions
EP1782888B1 (fr
Inventor
Dr. Meinig Uwe
Dieter Baumann
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.)
Ing Walter Hengst GmbH and Co KG
Original Assignee
Ing Walter Hengst GmbH and Co KG
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 Ing Walter Hengst GmbH and Co KG filed Critical Ing Walter Hengst GmbH and Co KG
Publication of EP1782888A1 publication Critical patent/EP1782888A1/fr
Application granted granted Critical
Publication of EP1782888B1 publication Critical patent/EP1782888B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/005—Centrifugal separators or filters for fluid circulation systems, e.g. for lubricant oil circulation systems
    • 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
    • B04B9/06—Fluid drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F01M2001/1028—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the type of purification
    • F01M2001/1035—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the type of purification comprising centrifugal filters

Definitions

  • the present invention relates to a recoil nozzle for the rotor of a centrifuge, in particular for a two-piece rotor with a lifetime component of the centrifuge performing drive part and a replaceable dirt catching part, wherein the recoil nozzle pointing substantially in Rotortangentialides at the outer end of a pointing substantially in the rotor radial direction tubular rotor arm is disposed therein a passage through which the recoil nozzle, a drive fluid is supplied under pressure.
  • the invention relates to a rotor with such recoil nozzles.
  • the task of creating a recoil nozzle for the rotor of a centrifuge on the one hand generates a drive fluid jet, are minimized in the flow components transverse to the beam axis, and on the other hand requires a low manufacturing and assembly costs and thus can be produced economically , Furthermore, a rotor with such recoil nozzles is to be specified.
  • the fluid flow components in the drive fluid jet can be minimized transversely to the fluid jet axis, which improves the propulsion efficiency of the recoil nozzle.
  • the tool opening which is needed only during the generation of the inlet funnel and the spray hole, in the rotor arm itself or in the Rotorarmend Published associated with this.
  • the rotor arm end piece has the shape of a tubular profile closed radially on the outside.
  • the hollow interior of the tube profile provides a space for the flow of the drive fluid; the frontal closure of the tube profile provides the necessary seal at the radially outer end of the rotor arm.
  • the invention preferably proposes that the nozzle contour of the recoil nozzle is a contour machined through the tool aperture.
  • the nozzle contour is created by removing material from either the rotor arm or the Rotorarmend Published.
  • the machined contour is a bore produced with a centering drill with a rounded cone.
  • a suitable center drill is specified, for example, in DIN 333 type R (with radius curve).
  • the rounded cone of the center drill thereby produces the inflow funnel, while the injection hole is drilled with the tip of the center drill.
  • the inflow funnel and the injection hole are advantageous here a contour generated in a single drilling operation, which contributes to an economical production.
  • the nozzle contour of the recoil nozzle can also be a contour produced by means of a mold slide guided through the tool opening. Also in this embodiment, the nozzle contour is comparatively simple and therefore economical to produce.
  • Rotorarmend SwissMA is pressed in Rotorarmaxial Vietnamese inward on the rotor arm or pressed into the rotor arm.
  • Such a press connection is easy to produce and requires in its simplest embodiment, only a matching vote of the cooperating outer and inner diameter of the rotor arm and Rotorarmend thoroughly, in particular a suitable excess to achieve a sufficient frictional engagement in the compression. This can already be achieved in a simple manner, the necessary tight and tight fit of the Rotorarmenddozens on the rotor arm.
  • this is preferably combined with a Christmas tree profile and / or with circumferential sealing grooves on the rotor arm and / or on the rotor arm end piece.
  • the Rotorarmend SwissMA is connected to the rotor arm by means of a screw.
  • a screw provides a long-term high security against loosening of the connection when the screw is designed accordingly.
  • the screw connection is formed by conical threads.
  • connection suggests that the Rotorarmend Partners with the rotor arm by mating and subsequent pressing in Rotorarmradialcardi or crimping in Rotorarmaxialcardi, in particular by Taumelnietung is connected. Also in this embodiment, the connection between Rotorarmend sandwiches and rotor arm has a very high solubility.
  • connection between the Rotorarmend combin and the rotor arm by an adhesive, a sealant, at least one sealing ring, such as O- Ring, or sealed by extending in radial and / or circumferential sealing ribs.
  • a sealant such as O- Ring
  • the connection between Rotorarmend sandwiches and rotor arm can be kept permanently fluid-tight.
  • the mechanical coding can be formed by a one-sided flattening, an eccentric front-side slot, an asymmetrical recess or elevation or an asymmetrically recessed or raised profile on the end face of the rotor end piece.
  • the coding is at least visually recognizable and can be used by a person performing the assembly for proper alignment; Alternatively, the coding can also cooperate with an automatic assembly tool and thus provide for a forced correct position assembly.
  • the Rotorarmend Gia is a Drehfrästeil made of metal.
  • the Rotorarmends can be relatively cheap and accurately produced here with a rotary milling machine.
  • the Rotorarmend SwissMA is a workpiece made of a sintered material.
  • Sintered materials are particularly wear-resistant, so that there is the possibility of using a relatively small amount of usually relatively expensive sintered material to make the thrust jets very durable, so that they maintain the contour once produced even with pollution contained in the driving fluid over the entire life without a significant wear occurs ,
  • Rotorarmend also be a die-cast metal, which is also inexpensive to produce and tool falling.
  • Rotorarmend SwissMA is an injection molded part made of plastic.
  • This embodiment is particularly suitable for such recoil nozzles, in which the thermal and mechanical loads are not extremely high. With correspondingly high-quality plastic, however, even relatively high thermal and mechanical loads can be absorbed without damage.
  • the invention proposes a rotor of a centrifuge, in particular a two-part rotor with a lifetime component of the centrifuge performing drive part and a replaceable dirt catching part, wherein a recoil nozzle pointing substantially in Rotortangentialides at the outer end of at least one pointing substantially in the rotor radial direction tubular rotor arm with a therein is arranged, wherein the rotor is characterized by at least one recoil nozzle according to one of claims 1 to 17.
  • FIG. 1 shows an embodiment of a centrifuge 1 'in longitudinal section.
  • the centrifuge 1 comprises a housing 10, which is only partially shown here and the upper side is closed during operation of the centrifuge 1 by a screw 11.
  • the screw cap 11 is in threaded engagement with a lower, not shown part of the housing 10.
  • part of the housing 10 is an upwardly projecting axis 12 is held on a rotor 2 by means of a lower bearing 13 and a upper bearing 13 'is rotatably mounted.
  • the axis 12 is held centering with its upper end.
  • the rotor 2 is here formed in two parts with a drive part 20 and a dirt trap part 20 '.
  • the drive part 20 comprises a central hollow body 21 which is mounted rotatably on the axle 12 by means of the two bearings 13 and 13 '. From the axially lower region of the central hollow body 21, two rotor arms 22 are opposite one another in the radial direction obliquely downward and outward, wherein only one of the two rotor arms 22 is visible in the right half of FIG. 1 due to the angled section.
  • Through each rotor arm 22 extends a channel 23 for the supply of a drive fluid to a arranged at the radially outer end of the rotor arm 22 recoil nozzle 3.
  • the recoil nozzle 3 is provided here in a Rotorarmend Culture 4, which is connected to the radially outer end 22 'of the rotor arm 22 ,
  • the dirt trap part 20 ' is rotationally fixed in operation of the centrifuge 1 with the drive member 20 and slidably connected in the axial direction immovable or limited to a limited extent. With the screw cap 11 removed, the dirt trap part 20 can be unlocked and pulled off in the axial direction upward from the drive part 20 and replaced by a fresh dirt trap part 20 '.
  • Figures 2 to 8 show several different versions of Rotorarmenden 22 'with the recoil nozzle 3, wherein all the return nozzles 3 is common here, that they are each designed aerodynamically favorable with a Einströmtrichter 30 and a spray hole 31. This produces a virtually non-diverging drive fluid jet that minimizes flow components transverse to the jet direction. Thus, a high efficiency of the drive of the rotor is achieved by the recoil nozzles 3.
  • the recoil nozzle 3 with its inflow funnel 30 and injection hole 31 is provided in a first wall region 24 at the radially outer end 22 'of the rotor arm.
  • a tool aperture 25 is mounted, which is in alignment with the inflow funnel 30 and the injection hole 31.
  • a rotor arm end piece 4 is inserted into the rotor arm end 22 ', here pressed in.
  • the Rotorarmend Cambodia 4 is tubular and has a closed, in Figure 2 left, ie at the free end of Rotorarmendes 22 'arranged end face 41.
  • an opening 43 is disposed in a first wall portion 44 of the Rotorarmend Swisss 4 whose diameter is larger than the maximum diameter of the inflow funnel 30 and through it a drive fluid from the channel 23 in the inflow funnel 30 and through the injection hole 31 can flow.
  • the tool opening 25 opposite the inflow funnel 30 and the injection hole 31 in the second wall region 24 'of the rotor arm end 22' is now closed by a second wall region 44 'of the rotor arm end piece 4.
  • the rotor arm end 4 can be inserted in the proper position, after which the now no longer required tool opening 25 is fluid-tightly closed.
  • a mechanical coding 48 which is attached to the end face 41 of the Rotorarmend Swisss 4. This coding 48 is shown in the right part of Figure 2 in front view and here has the shape of a stepped rib.
  • the recoil nozzle 3 with its inflow funnel 30 and its injection hole 31 is provided in the rotor arm end piece 4 in a first wall region 44.
  • a tool aperture 45 is provided in alignment with the inflow funnel 30 and the injection hole 31.
  • an opening 26 is provided in the Rotorarmende 22 'in the first, lying in Figure 3 below wall portion 24, which is significantly larger than the injection hole 31 of the recoil nozzle 3, so that an emerging from the spray hole 31 of the recoil nozzle 3 drive fluid jet unhindered through the opening 26 can pass.
  • FIG. 3 further shows, when the rotor arm end piece 4 inserted into the rotor arm end 22 ', the tool opening 45 present in the latter is closed in a fluid-tight manner by the second wall region 24' of the rotor arm end 22 'lying there on the outside of the rotor arm end piece 4.
  • the Rotorarmend Nursing 4 is also here in the axial direction of the Rotorarmendes 22 'pressed into this. So that the recoil nozzle 3 is positioned to match the aperture 26, a mechanical coding 48 is also provided here on the Rotorarmend Published 4, which is clearly visible in front view in Figure 3 in front view and here has the shape of a lying at the bottom of the front side 41 stage.
  • Rotorarmendsurprisinglys 4 serves here, as well as in the example of Figure 2, provided at the front end 41 of the Rotorarmend thoroughlys 4 collar, which rests against the free end of the Rotorarmendes 22 '.
  • FIG. 4 shows an exemplary embodiment in which the recoil nozzle 3 with inflow funnel 30 and injection hole 31 again lies in the rotor arm end piece 4.
  • FIG. 5 shows an exemplary embodiment which largely corresponds to the exemplary embodiment according to FIG. It is different that in the example of Figure 5, the press connection between the Rotorarmend Cambodia 4 and the Rotorarmende 22 'is combined with a so-called Christmas tree profile 46, which is highlighted in the enlarged detail "X" and shown enlarged.
  • This Tannenbaumprofil 46 ensures a particularly tight fit of Rotorarmend Cambodias 4 in Rotorarmende 22 ', as it acts like barbs.
  • FIG. 6 shows an exemplary embodiment that largely corresponds to the exemplary embodiment according to FIG.
  • the press connection between the rotor arm end 4 and the rotor arm end 22 ' is combined with sealing grooves 46', which are shown highlighted in enlarged detail "Y".
  • the mechanical coding 48 is formed by a rib projecting from the end face 41 of the rotor arm end piece 4.
  • FIG. 7 shows an exemplary embodiment in which the recoil nozzle 3 with inlet funnel 30 and injection hole 31 likewise lies in the rotor arm end piece 4.
  • the Rotorarmend Huawei 4 expediently made of metal;
  • the rotor arm end piece 4 can advantageously be a plastic part.
  • Rotorarmend structured 4 is also here in the axial direction of the Rotorarmendes 22 'pressed into this.
  • the preparation of the recoil nozzle 3 with the inflow funnel 30 and the injection hole 31 can also be done here by means of a corresponding drill through the tool opening 45 above the recoil nozzle 3.
  • the Rotorarmendgins 4 here be made as an injection molded part, in which case a movable mold slide is then performed by the tool opening 45 during the injection process of the Rotorarmend sangs 4 in an injection mold.
  • Rotorarmend combino For positionally correct connection of Rotorarmend combino 4 and Rotorarmende 22 'also serves a mechanical coding 48 on the front side 41 of the Rotorarmendcommuns 4.
  • the coding 48 again, comparable to the example of Figure 5, formed by a groove.
  • Figure 8 shows a final embodiment, for which it is characteristic that here the Rotorarmend Vietnamese 4, in which again the recoil nozzle 3 is not in the Rotorarmende 22 'inserted but attached to the Rotorarmende 22', also preferably pressed here is.
  • the recoil nozzle 3 with inflow funnel 30 and spray hole 31 is also here before placing the Rotorarmend Sharings 4 on the Rotorarmende 22 'by means of a guided through the tool opening 45 tool either produced by machining or injection molding.

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  • Centrifugal Separators (AREA)
EP06022362A 2005-11-02 2006-10-26 Buse de jet pour le rotor d'une centrifugeuse et le rotor d'une centrifugeuse avec tels buse de jet Not-in-force EP1782888B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005017208U DE202005017208U1 (de) 2005-11-02 2005-11-02 Rückstoßdüse für den Rotor einer Zentrifuge und Rotor mit solchen Rückstoßdüsen

Publications (2)

Publication Number Publication Date
EP1782888A1 true EP1782888A1 (fr) 2007-05-09
EP1782888B1 EP1782888B1 (fr) 2009-08-26

Family

ID=37698185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06022362A Not-in-force EP1782888B1 (fr) 2005-11-02 2006-10-26 Buse de jet pour le rotor d'une centrifugeuse et le rotor d'une centrifugeuse avec tels buse de jet

Country Status (3)

Country Link
EP (1) EP1782888B1 (fr)
AT (1) ATE440667T1 (fr)
DE (2) DE202005017208U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7713185B2 (en) * 2004-03-17 2010-05-11 Hengst Gmbh & Co., Kg Impulse centrifuge for the purification of the lubricating oil from an internal combustion engine
US7959547B2 (en) * 2005-12-22 2011-06-14 Hengst Gmbh & Co., Kg Centrifuge for cleaning a liquid
WO2018060306A1 (fr) * 2016-09-28 2018-04-05 Reinz-Dichtungs-Gmbh Tubine et séparareur de liquide équipé d'une telle turbine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007008081U1 (de) 2007-06-08 2008-10-23 Hengst Gmbh & Co.Kg Rotor einer Schmierölzentrifuge und Schmutzfangteil für den Rotor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699826A1 (fr) * 1994-08-30 1996-03-06 FILTERWERK MANN & HUMMEL GMBH Circuit de liquide avec un filtre au courant principal
DE10111381A1 (de) * 2001-03-09 2002-09-26 Mahle Filtersysteme Gmbh Zentrifuge
DE102004005920A1 (de) * 2003-02-07 2004-08-19 Fleetguard, Inc., Nashville Zentrifuge mit separater Hero-Turbine
DE202004008785U1 (de) * 2004-06-02 2005-10-13 Hengst Gmbh & Co.Kg Freistrahlzentrifugen für die Reinigung des Schmieröls einer Brennkraftmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US943083A (en) * 1909-06-30 1909-12-14 Frederick Laist Centrifugal slime-separator.
DE1123625B (de) * 1960-06-18 1962-02-08 Mann & Hummel Filter Fliehkraftreiniger fuer Fluessigkeiten, insbesondere fuer Schmieroel
DE202004004215U1 (de) * 2004-03-17 2005-07-28 Hengst Gmbh & Co.Kg Freistrahlzentrifuge für die Reinigung des Schmieröls einer Brennkraftmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699826A1 (fr) * 1994-08-30 1996-03-06 FILTERWERK MANN & HUMMEL GMBH Circuit de liquide avec un filtre au courant principal
DE10111381A1 (de) * 2001-03-09 2002-09-26 Mahle Filtersysteme Gmbh Zentrifuge
DE102004005920A1 (de) * 2003-02-07 2004-08-19 Fleetguard, Inc., Nashville Zentrifuge mit separater Hero-Turbine
DE202004008785U1 (de) * 2004-06-02 2005-10-13 Hengst Gmbh & Co.Kg Freistrahlzentrifugen für die Reinigung des Schmieröls einer Brennkraftmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7713185B2 (en) * 2004-03-17 2010-05-11 Hengst Gmbh & Co., Kg Impulse centrifuge for the purification of the lubricating oil from an internal combustion engine
US7959547B2 (en) * 2005-12-22 2011-06-14 Hengst Gmbh & Co., Kg Centrifuge for cleaning a liquid
WO2018060306A1 (fr) * 2016-09-28 2018-04-05 Reinz-Dichtungs-Gmbh Tubine et séparareur de liquide équipé d'une telle turbine
US11660610B2 (en) 2016-09-28 2023-05-30 Grimaldi Development Ab Turbine and liquid separator having such a turbine

Also Published As

Publication number Publication date
ATE440667T1 (de) 2009-09-15
DE502006004646D1 (de) 2009-10-08
EP1782888B1 (fr) 2009-08-26
DE202005017208U1 (de) 2007-03-22

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