EP0194211B1 - Pendelnd aufgehängte Zentrifugen - Google Patents

Pendelnd aufgehängte Zentrifugen Download PDF

Info

Publication number
EP0194211B1
EP0194211B1 EP86420036A EP86420036A EP0194211B1 EP 0194211 B1 EP0194211 B1 EP 0194211B1 EP 86420036 A EP86420036 A EP 86420036A EP 86420036 A EP86420036 A EP 86420036A EP 0194211 B1 EP0194211 B1 EP 0194211B1
Authority
EP
European Patent Office
Prior art keywords
dampers
series
bearing
rotor
pendulum
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.)
Expired
Application number
EP86420036A
Other languages
English (en)
French (fr)
Other versions
EP0194211A1 (de
Inventor
Jean-Pierre Davier
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.)
Robatel SLPI SA
Original Assignee
Robatel SLPI SA
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 Robatel SLPI SA filed Critical Robatel SLPI SA
Publication of EP0194211A1 publication Critical patent/EP0194211A1/de
Application granted granted Critical
Publication of EP0194211B1 publication Critical patent/EP0194211B1/de
Expired legal-status Critical Current

Links

Images

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 present invention relates to centrifugal decanters of the pendulum type and it relates more particularly to those in which the rotor and the frame enclosing the ball-and-socket drive mechanism are separated from each other by a horizontal protective slab.
  • the reference 1 designates the vertical shaft which connects the upper motor 2 to the rotor or rotary settling tank 3, said shaft being engaged with play through an opening 4a formed in the protective slab 4; below its pivoting part, the bearing 5 which is used to guide the shaft 1 receives a control part 6 provided at its base with a semi-spherical bead which is housed with as small a clearance as possible inside of the central opening of a bell-shaped member 7, the book edge of the latter being engaged in an annular depression 4b formed in the upper face of the slab 4 concentrically with the opening 4a.
  • the depression 4b is filled with oil and between the free edge of the bell 7 and the bottom of said depression are inserted balls or other sliding pads, so that when under the effect of an exaggerated pendulum movement of the 'shaft 1, consecutive in particular to an earthquake, the part 6 moves the above-mentioned bell horizontally, the outer edge of the latter comes to bear against the corresponding edge of the depression 4b by limiting the amplitude of the angular movement to a value suitable for avoiding any contact between the shaft 1 or the rotor 3 and a fixed part of the machine.
  • the assembly 6-7 acts accordingly in the manner of a safety device which supplements the damping effected by the usual dampers 8 and the lateral spring 9 which is possibly associated with them.
  • the present invention intends to remedy the drawbacks of known safety systems by limiting the exaggerated oscillations of the ball joint by dissipation of part of the vibrational energy in the second series of shock absorbers, the operating characteristics of the shock absorbers of this second series being such that they do not restrict the normal pendulum movement of the rotating assembly.
  • the pendulum centrifugal decanter according to the invention is defined in the single claim.
  • fig. 1 is a schematic axial section illustrating one of the solutions previously proposed for limiting the pendulum oscillation of the patella of a centrifugal decanter.
  • Fig. 2 is a partial axial section on a larger scale, showing the solution according to the present invention.
  • Fig. 3 is a horizontal section along the plane indicated in III-III in fig. 2; that this figure we recalled in II-II the section plane of FIG. 2.
  • a second series of dampers, referenced 21, is provided, the two constituent members of which are respectively fixed to beams 15c integral with the above-mentioned flange 15b and to brackets 22 attached laterally against the frame 20. It will be observed that the beams 15c pass through openings 20b made in the frame 20 so that the shock absorbers 21 are arranged outside of it, the brackets 22 themselves being turned outwards.
  • Fig. shows the respective position of the two concentric series of shock absorbers 18 and 21.
  • shock absorbers 21 can be of any known type (hydraulic, hydropneumatic, pneumatic, visco-elastic, etc.) and that their number, orientation and arrangement can vary to a very large extent. In any event, these shock absorbers 21 are calculated so as to have operating characteristics different from that of the shock absorbers 18; under these conditions, the latter continue to perform their usual role, namely the elastic limitation of the amplitude of the pendulum displacements of the rotating assembly of the decanter at normal operating speeds, without being hampered in any way by the shock absorbers 21.
  • the dampers 21 reduce the amplitude of the horizontal movements of the rotor and effectively avoid the risk of damage by contact of said rotor with any fixed part.
  • the quantity of energy dissipated in the shock absorbers 21 increases at the same time as the amplitude of the pendulum oscillations, so that the performances of the safety system thus developed adapt themselves to the importance of the disruptive unbalance and that self-regulation of the dynamic operation of the decanter is finally obtained.

Landscapes

  • Centrifugal Separators (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Claims (1)

  1. Pendelnd aufgehängte Zentrifuge mit einem Sicherheitssystem zur Ergänzung der üblichen Schwingungsdämpfer zwecks Begrenzung der waagerechten Verschiebungen der sich drehenden Einheit bei Einschwingzuständen, die insbesondere auf Erdbeben oder andere zufällige Störungen folgen, wobei dieses System aus einer zweiten Reihe von Dämpfern besteht, welche zwischen dem Pendellager (15) der senkrechten Welle (11) und dem festen Maschinenrahmen (20) konzentrisch zur Außenseite der ersten, üblichen Reihe von Dämpfern (18) angeordnet sind, dadurch gekennzeichnet, daß die Dämpfer (21) der zweiten Reihe einerseits an seitlich auf der Außenseite des festen Rahmens (20) angesetzten Konsolen (22) und andererseits an waagerechten Trägern (15c) befestigt sind, welche mit dem Lager (15) in fester Verbindung stehen und durch senkrechte öffnungen (20b) des Rahmens hindurchtreten.
EP86420036A 1985-02-08 1986-02-06 Pendelnd aufgehängte Zentrifugen Expired EP0194211B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8502012 1985-02-08
FR8502012A FR2577150B1 (fr) 1985-02-08 1985-02-08 Perfectionnements aux decanteuses centrifuges du type pendulaire

Publications (2)

Publication Number Publication Date
EP0194211A1 EP0194211A1 (de) 1986-09-10
EP0194211B1 true EP0194211B1 (de) 1988-08-17

Family

ID=9316211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86420036A Expired EP0194211B1 (de) 1985-02-08 1986-02-06 Pendelnd aufgehängte Zentrifugen

Country Status (5)

Country Link
US (1) US4702625A (de)
EP (1) EP0194211B1 (de)
JP (1) JPH0720562B2 (de)
DE (1) DE3660526D1 (de)
FR (1) FR2577150B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620051B1 (fr) * 1987-09-04 1991-08-16 Sgn Soc Gen Tech Nouvelle Machines tournantes de type pendulaire comportant au moins un dispositif d'amortissement
FR2706216B1 (fr) * 1993-06-07 1995-07-21 Robatel Slpi Décanteuse continue pour le traitement des produits nucléaires.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE558937C (de) * 1928-03-15 1932-09-13 Bergedorfer Eisenwerk Akt Ges Mit Hilfe eines Kranzes von Schraubenpufferfedern abgefedertes Halslager fuer Schleudermaschinen
US1857193A (en) * 1928-03-23 1932-05-10 Gen Electric Mercury arc rectifier support
DE583250C (de) * 1929-05-15 1933-08-30 Aeg Befestigung von Spinntoepfen, Zentrifugentrommeln oder aehnlichen schnellaufenden Maschinenteilen
US2513844A (en) * 1946-08-14 1950-07-04 Solar Corp Washing machine with centrifugal extractor and stabilizer therefor
US3043435A (en) * 1957-07-10 1962-07-10 American Motors Corp Centering and stabilizing apparatus for a combined washing machine and extractor
US3132098A (en) * 1962-02-28 1964-05-05 Gen Electric Centrifuging machine having antiprecessional damping means
US3212745A (en) * 1962-03-21 1965-10-19 Rosemount Eng Co Ltd Vibration control means
JPS5946153A (ja) * 1982-09-10 1984-03-15 Toshiba Corp 核燃料再処理用遠心分離機
JPS5976561A (ja) * 1982-10-25 1984-05-01 Toshiba Corp 核燃料再処理用遠心分離機
US4468938A (en) * 1983-09-12 1984-09-04 General Electric Company Tubless washing machine

Also Published As

Publication number Publication date
FR2577150B1 (fr) 1987-03-20
FR2577150A1 (fr) 1986-08-14
DE3660526D1 (en) 1988-09-22
JPH0720562B2 (ja) 1995-03-08
JPS61254261A (ja) 1986-11-12
EP0194211A1 (de) 1986-09-10
US4702625A (en) 1987-10-27

Similar Documents

Publication Publication Date Title
FR2463853A1 (fr) Dispositif de support d'un element tournant pouvant etre soumis a des balourds importants
JPH09187597A (ja) ドラム洗濯機
FR2538896A1 (fr) Amortisseur pour gyroscope accorde
FR2579277A1 (fr) Palier ayant une rigidite anisotropique
FR2609133A1 (fr) Dispositif electromagnetique de reduction des vibrations dans une machine tournante equipee de paliers fluides
CH625647A5 (de)
EP0194211B1 (de) Pendelnd aufgehängte Zentrifugen
JPS6250189B2 (de)
EP0121483B1 (de) Gyroskopische oder gyrometrische Vorrichtung, insbesondere Kreiselbeschleunigungsmesser mit biegsamer Aufhängung und elektrostatischer Sustentation
CA1260900A (fr) Decanteuse centrifuge du type pendulaire
EP0133122A1 (de) Schwingungsdämpfungsvorrichtung
WO1988009218A1 (en) Improved low speed disengageable damper
JPWO2007080878A1 (ja) 多重板バネ式制振装置
FR2597785A1 (fr) Dispositif d'equilibrage ponderal dans des machines a poinconner
WO1998001733A1 (en) A method for controlling vibration amplitude in rotary systems
WO1983003985A1 (en) Centrifuge stabilizing bearing
FR2503818A1 (fr) Volant d'inertie
EP0055678B1 (de) Vorrichtung zum Dämpfen von Schwingungen einer Maschine oder Konstruktion
JPH0738748Y2 (ja) 回転装置
RU2044936C1 (ru) Демпфер
JPS6341076Y2 (de)
RU1380U1 (ru) Самобалансирующее устройство
RU2489613C1 (ru) Устройство для стабилизации вращения вертикального ротора
JPS6015809B2 (ja) フライホイ−ル装置
FR2507274A1 (fr) Dispositf d'isolement contre les vibrations pour machines rotatives, notamment ventilateurs de plafond

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE GB IT

17P Request for examination filed

Effective date: 19861203

17Q First examination report despatched

Effective date: 19870522

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19880817

REF Corresponds to:

Ref document number: 3660526

Country of ref document: DE

Date of ref document: 19880922

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19890228

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: S.A. ROBATEL S.L.P.I.

Effective date: 19890228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960123

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960221

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970206

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19971101