EP0066522B1 - Membranpumpe mit hydraulischem Antrieb - Google Patents

Membranpumpe mit hydraulischem Antrieb Download PDF

Info

Publication number
EP0066522B1
EP0066522B1 EP82401008A EP82401008A EP0066522B1 EP 0066522 B1 EP0066522 B1 EP 0066522B1 EP 82401008 A EP82401008 A EP 82401008A EP 82401008 A EP82401008 A EP 82401008A EP 0066522 B1 EP0066522 B1 EP 0066522B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
pump
beads
membrane
elements
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
EP82401008A
Other languages
English (en)
French (fr)
Other versions
EP0066522B2 (de
EP0066522A1 (de
Inventor
Max-Albert Malizard
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.)
Dosapro Milton Roy SA
Original Assignee
Dosapro Milton Roy 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9259112&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0066522(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dosapro Milton Roy SA filed Critical Dosapro Milton Roy SA
Priority to AT82401008T priority Critical patent/ATE10964T1/de
Publication of EP0066522A1 publication Critical patent/EP0066522A1/de
Publication of EP0066522B1 publication Critical patent/EP0066522B1/de
Application granted granted Critical
Publication of EP0066522B2 publication Critical patent/EP0066522B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • F04B43/009—Special features systems, control, safety measures leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid

Definitions

  • the present invention intends to remedy these drawbacks by proposing a new membrane.
  • French patent No. 581223 discloses a rubber membrane for a pump, the two faces of which are in contact with two different fluids, this membrane forming a substantially spherical cup which has a substantially planar outer annular edge.
  • a membrane for a vacuum pump is also known, which is made up of two layers, one made of rubber and the other of a tetrafluoroethylene.
  • the diaphragm for a hydraulically operated diaphragm pump forms a substantially spherical cup having a substantially planar outer annular edge, and is formed by two layers, the one made of rubber and the other of plastic such as tetrafluoroethylene, and is provided on each of the faces of its edge with a bead for fixing the membrane in the pump body.
  • the depth of the interior spherical cup prefferably be of the order of 4 to 6% of the interior diameter of said annular edge.
  • the present invention also relates to the pump adapted to receive at least one such membrane, the body of which comprises at least two elements between which the membrane is clamped.
  • each of said elements is provided with an O-ring groove to receive the aforementioned beads and in that the bringing together of the elements at the end of tightening is limited to approximately 80% of the total thickness of the membrane at the level of its beads, the tightening being carried out only on the beads.
  • a membrane according to the invention constituted by a spherical cap 1 of diameter D surrounded by an annular rim 2 substantially planar of width E.
  • This cap 1 and this rim 2 are in one piece and consist of a composite material, the thickest layer 3 of which is made of rubber (natural or synthetic) and the thinnest layer 4 of which is constituted by a plastic material, in particular by a tetrafluoroethylene.
  • the thickness proportion of the two constituents is approximately% for the rubber and I k for the tetrafluoroethylene.
  • the depth of the spherical cap F (or the arrow thereof in the cutting plane) is between 0.04 and 0.06 D.
  • the rim 2 has on each of its faces a bead 2a and 2b consisting substantially of a half-torus whose radius R is of the order of the thickness of the membrane.
  • R radius
  • Fig. 2 schematically illustrates a double diaphragm pump with hydraulic control.
  • the control chamber 5 is associated in a known manner with a piston 6 and with a compensation device 7.
  • a first membrane 8 isolates this chamber from an intermediate chamber 9, itself insulated by a second membrane 10 from the pumping chamber 11.
  • the membranes 8 and 10 are coupled, as shown in detail in FIG. 2A, by pinching between elements 12a, 12b, 12c of the pump body. These elements are frontally provided with toric grooves 13 to receive the beads 2a, 2b of the membranes.
  • the elements 12a, 12b, 12c as well as the grooves 13 have dimensions such that, on the one hand, the crushing of the beads 2a, 2b does not exceed 20% of the dimension E (see fig. 1) of the membrane at this location and that, on the other hand, the rest of the membrane located between the above elements is not pinched.
  • the membranes are embedded only at the level of the beads which cooperate with the elements 12a to 12c in the manner of O-rings to seal between the chambers 5, 9 and 11.
  • the advantages of the invention lie in the fact that a pump equipped with the above-described membrane has, for equal diameter, a greater capacity.
  • the longevity of the membrane is increased and its operating performance improved.
  • the tightness ensured during assembly is better (similar to that of the O-ring) with a clamping force lower than that usually practiced on conventional pumps.
  • the intermediate volume is much better defined by the membranes according to the invention and can be much better filled.
  • the invention finds an interesting application in the field of hydraulically controlled diaphragm pumps, and in particular metering pumps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (4)

1. Membran für eine Membranpumpe mit hydraulischer Steuerung, deren beide Flächen in Kontakt mit zwei verschiedenen Fluiden stehen, welche Membran eine im wesentlichen kugelförmige Schale (1) bildet, die einen im wesentlichen ebenen ringförmigen Aussenrand (2) umfasst, dadurch gekennzeichnet, dass sie auf an sich bekannte Weise aus zwei Schichten, nämlich einer (3) aus Kautschuk und einer anderen (4) aus Plastikmaterial, wie Tetrafluoräthylen, gebildet ist, und dass jede der Flächen des Randes mit einem Wulst (2a, 2b) zum Fixieren der Membran im Pumpenkörper versehen ist.
2. Membran nach Anspruch 1, dadurch gekennzeichnet, dass die Tiefe (F) der inneren kugelförmigen Schale im Bereich von 4 bis 6% des Innendurchmessers (D) des ringförmigen Randes liegt.
3. Membran nach Anspruch 1, dadurch gekennzeichnet, dass die Wülste (2a, 2b) im wesentlichen halbringförmig sind, mit einem Aussenradius gleich 2,5 mm.
4. Pumpe mit hydraulischer Steuerung mit einfacher oder doppelter Membran zur Aufnahme von zumindest einer Membran nach einem der Ansprüche 1 bis 3, deren Körper zumindest zwei Elemente (12a, 12b) umfasst, zwischen denen die Membran (10) eingespannt ist, dadurch gekennzeichnet, dass jedes der Elemente mit einer ringförmigen Rille (13) zur Aufnahme der Wülste versehen ist und dass die Annäherung der Elemente am Ende des Klemmens auf etwa 80% der Gesamtdicke (E) der Membran in Höhe der Wülste begrenzt ist, wobei nur die Wülste geklemmt sind.
EP82401008A 1981-06-02 1982-06-02 Membranpumpe mit hydraulischem Antrieb Expired - Lifetime EP0066522B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401008T ATE10964T1 (de) 1981-06-02 1982-06-02 Membran fuer eine hydraulisch betriebene membranpumpe und pumpe mit deren anwendung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8110917A FR2506859B1 (fr) 1981-06-02 1981-06-02 Membrane pour pompe a commande hydraulique et pompe faisant application
FR8110917 1981-06-02

Publications (3)

Publication Number Publication Date
EP0066522A1 EP0066522A1 (de) 1982-12-08
EP0066522B1 true EP0066522B1 (de) 1984-12-27
EP0066522B2 EP0066522B2 (de) 1990-01-31

Family

ID=9259112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401008A Expired - Lifetime EP0066522B2 (de) 1981-06-02 1982-06-02 Membranpumpe mit hydraulischem Antrieb

Country Status (4)

Country Link
EP (1) EP0066522B2 (de)
AT (1) ATE10964T1 (de)
DE (1) DE3261687D1 (de)
FR (1) FR2506859B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714153A1 (de) * 1987-04-28 1988-12-01 Sergej Michajlovic Altuchov Membranmaschineneinheit
DE102006044253B3 (de) * 2006-09-16 2008-03-27 Thomas Magnete Gmbh Membran und Pumpenkopf für eine hydraulisch angetriebene Membranpumpe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR581223A (fr) * 1924-04-19 1924-11-25 Pompe à diaphragme élastique
FR1274473A (fr) * 1960-08-04 1961-10-27 Pompes notamment à piston, ou pompes à membrane
FR1373780A (fr) * 1963-08-19 1964-10-02 Perfectionnements aux pompes à diaphragme
DE1653369A1 (de) * 1966-10-20 1970-08-27 Erich Becker Membran-Pumpe,insbesondere zur Vakuumerzeugung bei aggressiven Medien
US3771907A (en) * 1971-09-13 1973-11-13 Reynolds Products Simplified positive displacement syrup pump assembly for drink machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714153A1 (de) * 1987-04-28 1988-12-01 Sergej Michajlovic Altuchov Membranmaschineneinheit
DE102006044253B3 (de) * 2006-09-16 2008-03-27 Thomas Magnete Gmbh Membran und Pumpenkopf für eine hydraulisch angetriebene Membranpumpe

Also Published As

Publication number Publication date
FR2506859A1 (fr) 1982-12-03
ATE10964T1 (de) 1985-01-15
EP0066522B2 (de) 1990-01-31
FR2506859B1 (fr) 1986-04-11
DE3261687D1 (en) 1985-02-07
EP0066522A1 (de) 1982-12-08

Similar Documents

Publication Publication Date Title
EP0161149B1 (de) Abdichtungsvorrichtung
EP0156697B1 (de) Änderungen an hydraulischen Antischwingungslagern
WO2021014088A1 (fr) Dispositif de coupure pyrotechnique
CH624890A5 (de)
EP0066522B1 (de) Membranpumpe mit hydraulischem Antrieb
EP0039271B1 (de) Befestigungsverstärkung für Hilfskraft-Bremsservomotor
EP2381143A1 (de) Dichtung, Behälter, der eine solche Dichtung enthält, und Verwendung einer solchen Dichtung
EP0777065B1 (de) Kugel, insbesondere eine pneumatische Kugel, zum Beispiel für die hydropneumatische Aufhängung eines Kraftfahrzeuges
FR2849493A1 (fr) Jonction pneumatique
FR2581403A1 (fr) Systeme pour realiser une liaison sous-marine entre les pieds d'une plate-forme et les pieux de fondation correspondants
CA1321573C (fr) Garniture d'etancheite a anneau de reaction incorpore, notamment pour obturateur
EP0767747A1 (de) Baueinheit aus unterdruck-bremskraftverstärker und hauptbremszylinder
EP0514224B1 (de) Unterdruckbremskraftverstärker
EP1349280B1 (de) Wasserdichtes Anwesenheitssensorsystem, insbesondere für Türgriffe
EP0217993A1 (de) Hahn mit einem drehbaren Küken, sein Zusammenbau und ein Ventil mit einem solchen Hahn
EP1511662B1 (de) Druckluftventil für bremsanlagen
EP0488879B1 (de) Statische Abdichtung
EP0514239A1 (de) Pneumatischer Bremskraftverstärker
FR3047215A1 (fr) Dispositif de freinage comprenant un joint d'etancheite composite a deux materiaux encolles.
FR3086887A1 (fr) Valve de gonflage a deformation elastique avec un bouchon permettant une fermeture etanche
EP0849512B1 (de) Kante zur Kante Dichtverbindung von zwei Bauelementen, insbesondere für Gasbehälter
FR2575427A1 (fr) Dispositif pour realiser une fixation etanche d'un organe sur une paroi, notamment une tole de carrosserie automobile et appplication d'un tel dispositif a la fixation d'accessoires automobiles, en particulier a la fixation d'une embase d'antenne
EP0546911B1 (de) Dichtungsring und Brennstofftank
FR2676523A1 (fr) Dispositif de raccordement etanche de deux ensembles coaxiaux et application de ce dispositif au raccordement etanche d'un corps de vanne et d'un pot a garnitures d'etancheite et au raccordement etanche de deux tuyaux.
EP0188156A2 (de) Überdruckanzeigevorrichtung

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

Designated state(s): AT BE CH DE GB IT LU NL SE

17P Request for examination filed

Effective date: 19821204

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 10964

Country of ref document: AT

Date of ref document: 19850115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3261687

Country of ref document: DE

Date of ref document: 19850207

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: LEWA HERBERT OTT GMBH + CO.

Effective date: 19850927

NLR1 Nl: opposition has been filed with the epo

Opponent name: LEWA HERBERT OTT GMBH

RTI2 Title (correction)

Free format text: HYDRAULICALLY ACTUATED DIAPHRAGM PUMP.

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 19900131

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE GB IT LU NL SE

NLR2 Nl: decision of opposition
ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940601

Year of fee payment: 13

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

Ref country code: CH

Payment date: 19940607

Year of fee payment: 13

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

Ref country code: AT

Payment date: 19940610

Year of fee payment: 13

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

Ref country code: SE

Payment date: 19940617

Year of fee payment: 13

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

Ref country code: NL

Payment date: 19940630

Year of fee payment: 13

Ref country code: LU

Payment date: 19940630

Year of fee payment: 13

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

Ref country code: BE

Payment date: 19940713

Year of fee payment: 13

EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940831

Year of fee payment: 13

EAL Se: european patent in force in sweden

Ref document number: 82401008.6

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

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950602

Ref country code: GB

Effective date: 19950602

Ref country code: AT

Effective date: 19950602

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

Ref country code: SE

Effective date: 19950603

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

Ref country code: LI

Effective date: 19950630

Ref country code: CH

Effective date: 19950630

Ref country code: BE

Effective date: 19950630

BERE Be: lapsed

Owner name: DOSAPRO MILTON ROY

Effective date: 19950630

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

Ref country code: NL

Effective date: 19960101

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

Effective date: 19950602

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960101

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

Ref country code: DE

Effective date: 19960301

EUG Se: european patent has lapsed

Ref document number: 82401008.6

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO