EP0066522A1 - Membranpumpe mit hydraulischem Antrieb - Google Patents

Membranpumpe mit hydraulischem Antrieb Download PDF

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Publication number
EP0066522A1
EP0066522A1 EP82401008A EP82401008A EP0066522A1 EP 0066522 A1 EP0066522 A1 EP 0066522A1 EP 82401008 A EP82401008 A EP 82401008A EP 82401008 A EP82401008 A EP 82401008A EP 0066522 A1 EP0066522 A1 EP 0066522A1
Authority
EP
European Patent Office
Prior art keywords
membrane
diaphragm
beads
elements
pump
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
EP82401008A
Other languages
English (en)
French (fr)
Other versions
EP0066522B1 (de
EP0066522B2 (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(A1) "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

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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.
  • a membrane for a diaphragm pump with hydraulic control the two faces of which are in contact with two different fluids, constituted by a cup of substantially spherical shape in rubber covered on one of its faces with a plastic layer and having a substantially planar outer annular edge.
  • each of the faces of said edge is provided with a bead for fixing the membrane in the pump body.
  • the depth of the inner spherical cap defined by the membrane prefferably be of the order of 4 to 6% of the inside diameter of said annular edge.
  • 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 a substantially planar annular rim 2 of width e.
  • This cap 1 and this rim 2 are in one piece and consist of a composite material of which the thickest layer 3 and a rubber (natural or synthetic) and the thinnest layer 4 of which is constituted by a plastic material in particular by tetrafluoroethylene.
  • the thickness proportion of the two constituents is approximately 4/5 for rubber and 1/5 for tetrafluoroethylene.
  • the depth of the spherical cap F (or the arrow ' thereof in the cutting plane) is between 0.04D and 0.06D.
  • 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 of the thickness of the membrane.
  • 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 a compensation device 7.
  • a first membrane 8 isolates this chamber from an intermediate chamber 9 which is itself insulated by a second membrane 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 provided frontally 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 Figure 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 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 performance in operation improved.
  • the tightness ensured during assembly is better (similar to that of the O-ring) with a lower clamping force 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 particularly metering pumps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
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
FR8110917 1981-06-02
FR8110917A FR2506859B1 (fr) 1981-06-02 1981-06-02 Membrane pour pompe a commande hydraulique et pompe faisant application

Publications (3)

Publication Number Publication Date
EP0066522A1 true EP0066522A1 (de) 1982-12-08
EP0066522B1 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)

Families Citing this family (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

Citations (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
FR1547601A (fr) * 1966-10-20 1968-11-29 Pompe à membrane, en particulier pour la production du vide dans des milieux agressifs
US3771907A (en) * 1971-09-13 1973-11-13 Reynolds Products Simplified positive displacement syrup pump assembly for drink machines

Patent Citations (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
FR1547601A (fr) * 1966-10-20 1968-11-29 Pompe à membrane, en particulier pour la production du vide dans des milieux agressifs
US3771907A (en) * 1971-09-13 1973-11-13 Reynolds Products Simplified positive displacement syrup pump assembly for drink machines

Also Published As

Publication number Publication date
DE3261687D1 (en) 1985-02-07
ATE10964T1 (de) 1985-01-15
EP0066522B1 (de) 1984-12-27
FR2506859A1 (fr) 1982-12-03
EP0066522B2 (de) 1990-01-31
FR2506859B1 (fr) 1986-04-11

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