EP0144904A2 - Joint d'étanchéité pour palier de centrifugeuse - Google Patents

Joint d'étanchéité pour palier de centrifugeuse Download PDF

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Publication number
EP0144904A2
EP0144904A2 EP84114363A EP84114363A EP0144904A2 EP 0144904 A2 EP0144904 A2 EP 0144904A2 EP 84114363 A EP84114363 A EP 84114363A EP 84114363 A EP84114363 A EP 84114363A EP 0144904 A2 EP0144904 A2 EP 0144904A2
Authority
EP
European Patent Office
Prior art keywords
centrifuge
bearing seal
sealing elements
seal according
interior
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Withdrawn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
EP84114363A
Other languages
German (de)
English (en)
Other versions
EP0144904A3 (fr
Inventor
Erhard Dipl.-Ing. Aufderhaar
Ernst Dipl.-Ing.(FH) Grübl
Siegfried Ing. Pfaff (Grad.)
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.)
Mannesmann Demag Krauss Maffei GmbH
Original Assignee
Krauss Maffei AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krauss Maffei AG filed Critical Krauss Maffei AG
Publication of EP0144904A2 publication Critical patent/EP0144904A2/fr
Publication of EP0144904A3 publication Critical patent/EP0144904A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings

Definitions

  • the invention relates to a bearing seal between the interior of a centrifuge and its drive part with ring-shaped sealing elements encompassing a drive shaft protective sleeve, which are pressed against the drive side with a protective gas, such as nitrogen, which passes into the interior of the centrifuge.
  • Centrifuges are also used in particular to separate suspensions into solids and liquid filtrates. In the pharmaceutical industry and in food production, it is essential to keep the interior of the centrifuge with the centrifuge drum clean relative to the drive part of the centrifuge. In addition, a seal between the interior of the centrifuge and the drive part is also necessary because explosive or aggressive gases can occur during centrifugation, which must be kept away from the drive part.
  • the present invention has for its object to provide a bearing seal between the interior of a centrifuge and its drive part, which works reliably, requires little maintenance and in which the wearing parts can be easily replaced.
  • At least two identical sealing elements are arranged axially one behind the other, that the drive shaft protective sleeve has a reduced diameter in the pressing area of the sealing element closest to the interior of the centrifuge and that the protective gas passes through this sealing element.
  • suspensions are e.g. a filling tube 68 is inserted into the interior 20 of the centrifuge.
  • the drum 66 of the centrifuge 22 is rotated by means of a motor 60.
  • the drive takes place via the shaft 62 of the motor, V-belt 63, a V-belt pulley 64 and the drive shaft 50 of the drum 66.
  • the hub 52 of the drum is firmly connected to the drive shaft 50 (see also FIG. 2).
  • the solids collecting in the drum 66 during centrifugation are removed from the centrifuge 22 via a chute 70.
  • the drum hub 52 shown in FIGS. 1 and 2 thus moves with the drive shaft 50 while the components 84 (FIG. 2) do not rotate.
  • the bearing seal described in more detail below is provided between the stationary components 84 (which will be explained in more detail below) and the rotating shaft 50.
  • a roller bearing 54 is located between the stationary parts 84 and the drive shaft 50.
  • FIGS. 2, 3 and 4 The seal according to the invention is shown in more detail in FIGS. 2, 3 and 4.
  • a protective sleeve 18 is placed around the shaft 50. It interacts with the sliding sealing elements 10, 12 and 14 and is abrasion-resistant and easy to replace.
  • the sealing elements 10, 12 and 14 thus seal the interior 20 of the centrifuge 22, which extends via the shaft 80 to the sealing element 10, against the drive part of the centrifuge, which extends from the other side via the shaft 86 to the sealing element 14.
  • FIG. 3 The arrangement of the sealing elements relative to the drive shaft protective sleeve 18 is shown in FIG. 3.
  • the sealing elements 10, 12 and 14 are arranged axially one behind the other and each press with their inner edges against the protective sleeve 18.
  • Spacer rings 24, between which the sealing elements are clamped on the outside, are used to mount the sealing elements 10, 12 and 14.
  • the protective sleeve 18 has a smaller diameter in the area of contact with the sealing element 10 facing the interior 20 of the centrifuge 22 than in the area of contact with the other sealing elements 12 and 14, respectively. Since the sealing elements 10, 12 and 14 in the the other are identical to one another, this measure has the consequence that the sealing element 10 presses against the surface of the protective sleeve 18 with less pressure than the other two sealing elements 12 and 14 respectively.
  • the protective gas channel 32 leads into the space between the sealing elements 10 and 12. Since, due to the reduced diameter of the protective sleeve 18 in the area of contact with the upper sealing element 10, the sealing effect of the sealing element 10 is less than that of the underlying one Sealing element 12, the protective gas (for example nitrogen) having a slight positive pressure will pass between the sealing element 10 and the protective sleeve 18.
  • the flow of the protective gas thus runs via the channel 32 into the space between the sealing elements 10 and 12 in the shaft 80 and thus into the interior of the centrifuge 22. This flow ensures, on the one hand, that there are no dirt particles from the centrifuge in the area of the seals accumulate and affect them and on the other hand that no explosive or aggressive gases from the centrifuge into which drive parts that may have hot parts can get.
  • the sealing elements 10, 12 and 14 and their spacer rings 24 are arranged in a flange 30.
  • the flange 30 is not only penetrated by the channel 32 for the protective gas, but also has a channel 26 for lubricants.
  • the lubricant channel 26 is used to relubricate the two lower sealing elements 12 and 14 at larger intervals.
  • a third channel system 42 is provided in the flange 30.
  • Detergent cleaning agent
  • the flushing agent entering the groove 38 under pressure is sprayed through fine channels 40 provided between the surface 44 of the annular disc 36 and the groove 38 (see FIG. 5), so that contaminants are loosened and removed by the flushing agent.

Landscapes

  • Centrifugal Separators (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing Of Bearings (AREA)
EP84114363A 1983-12-05 1984-11-28 Joint d'étanchéité pour palier de centrifugeuse Withdrawn EP0144904A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833343938 DE3343938A1 (de) 1983-12-05 1983-12-05 Lagerabdichtung fuer eine zentrifuge
DE3343938 1983-12-05

Publications (2)

Publication Number Publication Date
EP0144904A2 true EP0144904A2 (fr) 1985-06-19
EP0144904A3 EP0144904A3 (fr) 1987-09-23

Family

ID=6216090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114363A Withdrawn EP0144904A3 (fr) 1983-12-05 1984-11-28 Joint d'étanchéité pour palier de centrifugeuse

Country Status (5)

Country Link
US (1) US4583747A (fr)
EP (1) EP0144904A3 (fr)
JP (1) JPS60137459A (fr)
DE (1) DE3343938A1 (fr)
IN (1) IN161071B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1849524A1 (fr) 2006-04-25 2007-10-31 Ferrum AG Agencement d'étanchéité pour une centrifugeuse
EP2181770A1 (fr) * 2008-10-30 2010-05-05 Ferrum AG Centrifugeuse
CN105562220A (zh) * 2016-03-02 2016-05-11 苏州盛天力离心机制造有限公司 刮刀式离心机的残余滤饼清除装置
CN105562222A (zh) * 2016-03-02 2016-05-11 苏州盛天力离心机制造有限公司 电机上悬式的立式刮刀离心机的残余滤饼清除装置
CN107234008A (zh) * 2017-06-22 2017-10-10 安徽普源分离机械制造有限公司 一种高稳定型下卸料离心机

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708711A (en) * 1985-11-08 1987-11-24 Krauss-Maffei A.G. Pressure centrifuge
GB9824702D0 (en) * 1998-11-12 1999-01-06 Cole Michael Devices for controlling amplitude vibration in rotary systems
ES2594622T3 (es) * 2006-04-25 2016-12-21 Ferrum Ag Disposición de cojinete para una centrífuga
USD570375S1 (en) * 2006-05-30 2008-06-03 Eagle Industry Co., Ltd. Seal for a rotary shaft
USD570374S1 (en) * 2006-05-30 2008-06-03 Eagle Industry Co., Ltd. Seal for a rotary shaft
USD631066S1 (en) 2008-11-26 2011-01-18 Eagle Industry Co., Ltd. Seal for a rotary shaft
US8753077B2 (en) 2010-07-23 2014-06-17 General Electric Company Slinger shield structure
USD695788S1 (en) * 2012-09-28 2013-12-17 Mark R. Wilkinson Gland follower with integral loading cylinders for a rotary or reciprocating mechanical device
CN108311299A (zh) * 2018-05-09 2018-07-24 张家港市中南化工机械有限公司 一种离心机传动总成
CN108654848A (zh) * 2018-05-09 2018-10-16 张家港市中南化工机械有限公司 一种充氮离心机系统
CN112916215B (zh) * 2019-12-05 2024-12-31 江苏巨能机械有限公司 碟式分离机的密封结构
EP4175756B1 (fr) * 2020-07-01 2025-02-12 The Western States Machine Company Centrifugeur industriel pour extraction chimique, doté de palier étanche à l'air
CN112871467B (zh) * 2020-12-23 2022-07-15 河北化工医药职业技术学院 离心机的气体保护系统及气体保护方法

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
US1100872A (en) * 1913-03-26 1914-06-23 Laval Separator Co De Sealing discharge-passages of centrifugalizing-machines and the like.
US1149578A (en) * 1914-01-28 1915-08-10 Laval Separator Co De Sealing discharge-passages of centrifugalizing-machines and the like.
USRE16640E (en) * 1924-05-01 1927-05-31 Sionobs to the bhabples
US2133487A (en) * 1935-07-08 1938-10-18 R J Spargo Proprietary Ltd Liquid sealed rotating joints
DE724555C (de) * 1936-10-11 1942-08-29 Ver Kugellagerfabriken Ag Abdichtung fuer Lagergehaeuse
US3164420A (en) * 1959-12-04 1965-01-05 North American Aviation Inc Bearing and seal
US3194492A (en) * 1962-06-28 1965-07-13 Richard A Koffinke Pressurized centrifuge
US3472518A (en) * 1966-10-24 1969-10-14 Texaco Inc Dynamic seal for drill pipe annulus
DE1600502A1 (de) * 1967-06-03 1970-01-29 Krauss Maffei Ag Vorrichtung zum Abdichten einer zumindest etwa senkrecht verlaufenden Wellendurchfuehrung
FR2040896A5 (fr) * 1969-04-25 1971-01-22 Alsthom
US3601307A (en) * 1970-03-19 1971-08-24 Pennwalt Corp Centrifuge with spindle-sealing means
US3643964A (en) * 1970-10-12 1972-02-22 Kayex Corp Pull rod seal
US3729128A (en) * 1971-09-23 1973-04-24 Pennwalt Corp High pressure centrifuge lubrication system
FR2356064A1 (fr) * 1976-02-09 1978-01-20 Commissariat Energie Atomique Dispositif d'etancheite pour sortie d'arbre de machine tournante
DE2643769A1 (de) * 1976-09-29 1978-03-30 Howaldtswerke Deutsche Werft Abdichtung fuer sich drehende wellen
US4350283A (en) * 1980-07-01 1982-09-21 Beckman Instruments, Inc. Centrifugal elutriator rotor
DE3026541C2 (de) * 1980-07-12 1985-12-19 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Schmutzabscheider für Strömungsmaschinen
DE3244362A1 (de) * 1982-12-01 1984-06-07 Deutsche Babcock Werke AG, 4200 Oberhausen Vorrichtung zum abdichten des inneren einer muehle
US4405136A (en) * 1982-12-27 1983-09-20 Magnetic Peripherals Inc. Pneumatic cartridge seal for computer disc drive cartridge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1849524A1 (fr) 2006-04-25 2007-10-31 Ferrum AG Agencement d'étanchéité pour une centrifugeuse
EP2181770A1 (fr) * 2008-10-30 2010-05-05 Ferrum AG Centrifugeuse
CN105562220A (zh) * 2016-03-02 2016-05-11 苏州盛天力离心机制造有限公司 刮刀式离心机的残余滤饼清除装置
CN105562222A (zh) * 2016-03-02 2016-05-11 苏州盛天力离心机制造有限公司 电机上悬式的立式刮刀离心机的残余滤饼清除装置
CN107234008A (zh) * 2017-06-22 2017-10-10 安徽普源分离机械制造有限公司 一种高稳定型下卸料离心机

Also Published As

Publication number Publication date
DE3343938A1 (de) 1985-06-13
US4583747A (en) 1986-04-22
EP0144904A3 (fr) 1987-09-23
IN161071B (fr) 1987-10-03
JPS60137459A (ja) 1985-07-22

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Inventor name: PFAFF, SIEGFRIED, ING. (GRAD.)

Inventor name: AUFDERHAAR, ERHARD, DIPL.-ING.

Inventor name: GRUEBL, ERNST, DIPL.-ING.(FH)