EP0032473A1 - Volumetric pump - Google Patents

Volumetric pump Download PDF

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Publication number
EP0032473A1
EP0032473A1 EP81400031A EP81400031A EP0032473A1 EP 0032473 A1 EP0032473 A1 EP 0032473A1 EP 81400031 A EP81400031 A EP 81400031A EP 81400031 A EP81400031 A EP 81400031A EP 0032473 A1 EP0032473 A1 EP 0032473A1
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EP
European Patent Office
Prior art keywords
compartment
seat
membrane
suction
pump according
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
EP81400031A
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German (de)
French (fr)
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EP0032473B1 (en
Inventor
André Clavier
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.)
ETA SA
Eta Sa Dite Ste
Original Assignee
ETA SA
Eta Sa Dite Ste
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Filing date
Publication date
Application filed by ETA SA, Eta Sa Dite Ste filed Critical ETA SA
Priority to AT81400031T priority Critical patent/ATE8427T1/en
Publication of EP0032473A1 publication Critical patent/EP0032473A1/en
Application granted granted Critical
Publication of EP0032473B1 publication Critical patent/EP0032473B1/en
Expired legal-status Critical Current

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    • 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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
    • 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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/028—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms with in- or outlet valve arranged in the plate-like flexible member

Definitions

  • the present invention relates to positive displacement positive displacement pumps or vacuum compressors.
  • the pump according to the invention which is self-priming, applies, in general, to the transport by pumping of a fluid at high flow rate, in a conduit which may have a small diameter, while consuming little d energy and without the material subjected to pumping being abused, and while remaining highly reliable in operation even in the event of water hammer.
  • the subject of the invention is therefore a pump formed of a sealed envelope having a suction pipe and a delivery pipe, of two membrane walls and seat, inside the envelope, which delimit between them a compartment.
  • a pump formed of a sealed envelope having a suction pipe and a delivery pipe, of two membrane walls and seat, inside the envelope, which delimit between them a compartment.
  • intermediate between two suction and discharge compartments communicating respectively with the pipes and which allow the passage of a fluid only from the suction compartment to the intermediate one and only from the latter to the discharge compartment, and means for alternately move the walls apart and bring them closer together, characterized in that a membrane is locally retained at its seat.
  • the flow of the fluid is not interrupted.
  • the suction and discharge pipes unlike known positive displacement pumps, open freely in their compartment and are not provided with any fluid retention system. This saves a lot on the power consumed for the operation of the pump.
  • the seat is rigid and the membrane is retained at the seat. The membrane then serves both as a valve and as a member for modifying the volume of the intermediate compartment.
  • the seat comprises a rigid grid, on the periphery of which is fixed an elastic skirt whose outer periphery is fixed to the envelope. It is then the skirt which serves as said organ.
  • Figures 1 and 2 are two diagrams, seen in section, illustrating the operation of a pump according to the invention.
  • Figure 3 is a diagram of another variant.
  • Figure 4 is a top view of the mem brane, fixed at two points, of the variant of FIG. 4.
  • the pump comprises a metal casing 1, of generally parallelepiped shape.
  • the interior of the casing 1 is subdivided into three compartments, one 4, suction, where the tubing 2 opens, another 5, discharge, or the tubing 3 opens and a third 6, intermediate by two walls A and B suction and discharge.
  • Each partition comprises a waterproof membrane or skirt 7 and 7B fixed at 10 around the periphery of the envelope 1.
  • the membrane 7 is connected by a grid 11 forming a seat to a wall 12 and the membrane 7B to a wall 12B by a grid of the same type. These walls 12 and 12B are provided with an opening.
  • the bulkhead assembly A (membrane 7, valve 16 and cup 14) is integral with a rod 15 and the bulkhead assembly B (membrane 7B, valve 16B and cup 14B) is integral with a rod 15B.
  • compartments 4, 6 and 5 the walls 12 and 12B have no connection between them, they are simply joined together by the fasteners 10 of the envelope 1.
  • valve 16 is located in the intermediate chamber 6 and for the partition B, the valve 16B is located in the discharge chamber 5.
  • the rods 15 and 15B pass through the casing 1 via a flexible element 18 and 18B.
  • the flexible element 18 is integral with the envelope 1 and the rod 15 and the flexible element 18B of the envelope 1 and the rod 15B.
  • a recess 17 of the envelope is provided between the points 10 for fixing the membranes 7 and 7B, so as to reduce the volume of the compartment 6 comprised between these two membranes when they are brought together.
  • the rods 15 and 15B are driven in an alternating movement by a motor 19.
  • the device operates in the following manner: the two walls are driven in an alternating movement in opposition.
  • the vacuum in compartment 4 increases.
  • the fluid of the tubing 2 is thus sucked towards the compartment 4.
  • the fluid in compartment 5 is thus discharged towards the discharge pipe 3.
  • the seats 20 come from the casing 1. On these seats apply membranes 21, 22 secured to the pistons 15 and 15B and retained at two points 23, 24 diametrically opposite their seats 20.
  • the two points 23, 24 also make it possible to ensure the guiding of the piston 15 and facilitate obtaining the seal upon closing.

Abstract

1. Pump comprising : an impervious casing (1) having an inlet pipe (2) and an outlet pipe (3) ; two walls (A, B) which are formed respectively from a rigid component (14, 11, 11B) on the periphery of which there is fixed the internal periphery of an elastic membrane (7, 7B), which, between them and the casing (1), delimit an intermediate compartment (6) contained between two compartments, namely an inlet compartment (4) and a delivery compartment (5), which communicate respectively with the pipes (2, 3) and which, by means of clack-valves (16A, 16B) with seats (11, 11B), only allow a fluid to pass from the inlet compartment (4) to the intermediate compartment (6) and from the latter (6) to the outlet compartment (5) ; and means (15, 15B, 19) for moving the walls (A, B) alternately away from and close to each other ; characterised in that the membranes (7, 7B) are fixed by means of their external periphery to the casing (1) which has, between the areas where the membranes (7, 7B) are fixed, recesses (17) which extend only between the membranes (7, 7B) so that the volume of the intermediate compartment (6) is reduced merely between the membranes (7, 7B).

Description

La présente invention se rapporte aux pompes volumétriques à cloison mobile ou aspiro- compresseur.The present invention relates to positive displacement positive displacement pumps or vacuum compressors.

La pompe suivant l'invention, qui est auto-amorçante, s'applique, d'une manière générale, au transport par pompage d'un fluide à grand débit, dans un conduit qui peut avoir un diamètre petit, tout en consommant peu d'énergie et sans que la matière soumise au pompage soit malmenée, et tout en restant d'une grande fiabilité de fonctionnement même en cas de coup de bélier.The pump according to the invention, which is self-priming, applies, in general, to the transport by pumping of a fluid at high flow rate, in a conduit which may have a small diameter, while consuming little d energy and without the material subjected to pumping being abused, and while remaining highly reliable in operation even in the event of water hammer.

L'invention a donc pour objet une pompe formée d'une enveloppe étanche ayant une tubulure d'aspiration et une tubulure de refoulement, de deux parois à membrane et siège, à l'intérieur de l'enveloppe, qui délimitent entre elles un compartiment intermédiaire compris entre deux compartiments d'aspiration et de refoulement communiquant respectivement avec les tubulures et qui n'autorisent le passage d'un fluide que du compartiment d'aspiration à celui intermédiaire et que de ce dernier au compartiment de refoulement, et de moyens pour éloigner et rapprocher alternativement les parois entre elles, caractérisée en ce qu'une membrane est retenue localement à son siège.The subject of the invention is therefore a pump formed of a sealed envelope having a suction pipe and a delivery pipe, of two membrane walls and seat, inside the envelope, which delimit between them a compartment. intermediate between two suction and discharge compartments communicating respectively with the pipes and which allow the passage of a fluid only from the suction compartment to the intermediate one and only from the latter to the discharge compartment, and means for alternately move the walls apart and bring them closer together, characterized in that a membrane is locally retained at its seat.

Grâce à cet agencement à double paroi mobile, on obtient que le compartiment d'aspiration soit toujours en phase d'aspiration, tandis que le refoulement s'effectue lui aussi, continuellement.Thanks to this movable double wall arrangement, the suction compartment is obtained is always in the aspiration phase, while the discharge also takes place continuously.

Le débit du fluide, sans être parfaitement constant, n'est pas interrompu. En outre, les tubulures d'aspiration et de refoulement, contrairement aux pompes volumétriques connues, débouchent librement dans leur compartiment et ne sont munies d'aucun système de retenue du fluide. Ceci permet de gagner beaucoup sur la puissance consommée pour le fonctionnement de la pompe. Surtout, comme les deux membranes sont retenues localement à leur siège, même en cas de coup de bélier, elles ne peuvent plus passer derrière leur siège, ce qui se produisait auparavant. Suivant une variante simple, le siège est rigide et la membrane est retenue au siège. La membrane sert alors à la fois de clapet et d'organe de modification du volume du compartiment intermédiaire. Suivant une autre variante plus sûre, le siège comprend une grille rigide, sur le pourtour de laquelle est fixée une jupe élastique dont le pourtour extérieur est fixé à l'enveloppe. C'est alors la jupe qui sert dedit organe.The flow of the fluid, without being perfectly constant, is not interrupted. In addition, the suction and discharge pipes, unlike known positive displacement pumps, open freely in their compartment and are not provided with any fluid retention system. This saves a lot on the power consumed for the operation of the pump. Above all, as the two membranes are retained locally at their seat, even in the event of a water hammer, they can no longer pass behind their seat, which was previously the case. According to a simple variant, the seat is rigid and the membrane is retained at the seat. The membrane then serves both as a valve and as a member for modifying the volume of the intermediate compartment. According to another safer variant, the seat comprises a rigid grid, on the periphery of which is fixed an elastic skirt whose outer periphery is fixed to the envelope. It is then the skirt which serves as said organ.

Il est possible de monter plusieurs pompes unitaires en parallèle en mettant en communication d'une part leur compartiment d'aspiration entre eux et d'autre part leur compartiment de refoulement entre eux, le débit étant plus régulier si les moyens pour rapprocher et éloigner les cloisons sont déphasés dans le temps d'une pompe unitaire à l'autre.It is possible to mount several unit pumps in parallel by communicating on the one hand their suction compartment between them and on the other hand their discharge compartment between them, the flow rate being more regular if the means for bringing and moving the partitions are phase shifted from one unit pump to another.

Au dessin annexé, donné uniquement à titre d'exemple, les figures 1 et 2 sont deux schémas, vus en coupe, illustrant le fonctionnement d'une pompe suivant l'invention.In the accompanying drawing, given solely by way of example, Figures 1 and 2 are two diagrams, seen in section, illustrating the operation of a pump according to the invention.

La figure 3 est un schéma d'une autre variante.Figure 3 is a diagram of another variant.

La figure 4 est une vue de dessus de la membrane, fixée en deux points, de la variante de la figure 4.Figure 4 is a top view of the mem brane, fixed at two points, of the variant of FIG. 4.

La pompe comprend une enveloppe 1 métallique, de forme générale parallélépipédique.The pump comprises a metal casing 1, of generally parallelepiped shape.

Dans l'enveloppe 1, débouchent une tubulure 2 d'aspiration et une tubulure 3 de refoulement.In the casing 1, open a suction pipe 2 and a delivery pipe 3.

L'intérieur de l'enveloppe 1 est subdivisé en trois compartiments, l'un 4, d'aspiration, où débouche la tubulure 2, un autre 5, de refoulement, ou débouche la tubulure 3 et un troisième 6, intermédiaire par deux parois A et B d'aspiration et de refoulement.The interior of the casing 1 is subdivided into three compartments, one 4, suction, where the tubing 2 opens, another 5, discharge, or the tubing 3 opens and a third 6, intermediate by two walls A and B suction and discharge.

Chaque cloison comprend une membrane ou jupe 7 et 7B, étanche, fixée en 10 sur le pourtour de l'enveloppe 1.Each partition comprises a waterproof membrane or skirt 7 and 7B fixed at 10 around the periphery of the envelope 1.

La membrane 7 est reliée par une grille 11 formant siège à une paroi 12 et la membrane 7B à une paroi 12B par une grille de même type. Ces parois 12 et 12B sont munies d'ouverture.The membrane 7 is connected by a grid 11 forming a seat to a wall 12 and the membrane 7B to a wall 12B by a grid of the same type. These walls 12 and 12B are provided with an opening.

Sur ces parois, est fixé un clapet (16) et (16B), tenus par une coupelle 14 et 14B.On these walls is fixed a valve (16) and (16B), held by a cup 14 and 14B.

L'ensemble cloison A (membrane 7, clapet 16 et coupelle 14) est solidaire d'une tige 15 et l'ensemble cloison B (membrane 7B, clapet 16B et coupelle 14B) est solidaire d'une tige 15B.The bulkhead assembly A (membrane 7, valve 16 and cup 14) is integral with a rod 15 and the bulkhead assembly B (membrane 7B, valve 16B and cup 14B) is integral with a rod 15B.

Dans les compartiments 4, 6 et 5, les parois 12 et 12B n'ont pas de connexion entre elles, elles sont simplement solidaires par les fixations 10 de l'enveloppe 1.In compartments 4, 6 and 5, the walls 12 and 12B have no connection between them, they are simply joined together by the fasteners 10 of the envelope 1.

Pour la cloison A, le clapet 16 se trouve situé dans la chambre intermédiaire 6 et pour la cloison B, le clapet 16B se trouve situé.dans la chambre de refoulement 5.For partition A, the valve 16 is located in the intermediate chamber 6 and for the partition B, the valve 16B is located in the discharge chamber 5.

Les tiges 15 et 15B traversent l'enveloppe 1 par l'intermédiaire d'un élément souple 18 et 18B.The rods 15 and 15B pass through the casing 1 via a flexible element 18 and 18B.

L'élément souple 18 est solidaire de l'enveloppe 1 et de la tige 15 et l'élément souple 18B de l'enveloppe 1 et de la tige 15B.The flexible element 18 is integral with the envelope 1 and the rod 15 and the flexible element 18B of the envelope 1 and the rod 15B.

Un renfoncement 17 de l'enveloppe est prévu entre les points 10 de fixation des membranes 7 et 7B, de manière à diminuer le volume du compartiment 6 compris entre ces deux membranes lorsqu'elles sont rapprochées l'une de l'autre.A recess 17 of the envelope is provided between the points 10 for fixing the membranes 7 and 7B, so as to reduce the volume of the compartment 6 comprised between these two membranes when they are brought together.

Les tiges 15 et 15B sont animées d'un mouvement alternatif par un.moteur 19.The rods 15 and 15B are driven in an alternating movement by a motor 19.

L'appareil fonctionne de'la manière suivante : les deux parois sont animées d'un mouvement alternatif en opposition.The device operates in the following manner: the two walls are driven in an alternating movement in opposition.

  • - Les cloisons A et B se rapprochent (figure 1);- The partitions A and B are getting closer (Figure 1);
  • - Le compartiment 4 d'aspiration augmente de volume ;- The suction compartment 4 increases in volume;
  • - Le compartiment 5 de refoulement augmente de volume;- The delivery compartment 5 increases in volume;
  • - Le compartiment 6 intermédiaire diminue de volume ;- The intermediate compartment 6 decreases in volume;
  • - La communication entre le compartiment 4 et 6 est interrompue par le clapet 16.- Communication between compartment 4 and 6 is interrupted by valve 16.

En effet, il ne peut y avoir passage de fluide du compartiment 6 vers le compartiment 4 car le clapet 16 plaqué au départ sur la paroi 12 est maintenant collé par la différence de pression régnant entre ces deux compartiments.Indeed, there can be no passage of fluid from compartment 6 to compartment 4 because the valve 16 pressed at the start on the wall 12 is now bonded by the pressure difference prevailing between these two compartments.

La dépression dans le compartiment 4 augmente. Le fluide de la tubulure 2 est ainsi aspiré vers le compartiment 4.The vacuum in compartment 4 increases. The fluid of the tubing 2 is thus sucked towards the compartment 4.

Comme le compartiment intermédiaire 6 diminue de volume, une pression se produit dans ce compartiment, obligeant le clapet 16B à s'ouvrir et le fluide du compartiment 6 est refoulé vers le compartiment 5 et vers la tubulure 3.As the intermediate compartment 6 decreases in volume, a pressure occurs in this compartment, forcing the valve 16B to open and the fluid from the compartment 6 is discharged towards the compartment 5 and towards the tube 3.

  • - Les cloisons A et B s'éloignent (figure 2) ;- The partitions A and B move away (figure 2);
  • - Le compartiment 4 d'aspiration diminue de volume ;- The suction compartment 4 decreases in volume;
  • - Le compartiment 5 de refoulement diminue de volume ;- The delivery compartment 5 decreases in volume;
  • - Le compartiment 6 intermédiaire augmente de volume ;- The intermediate compartment 6 increases in volume;
  • - La communication entre les compartiments 6 et 5 est interrompue par le clapet 16B.- Communication between compartments 6 and 5 is interrupted by the valve 16B.

En effet, il ne peut y avoir passage de fluide du compartiment 5 vers le compartiment 6 car le clapet 16B, plaqué au départ sur la paroi 12B, est maintenant "collé" par la différence de pression régnant entre ces deux compartiments.Indeed, there can be no passage of fluid from compartment 5 to compartment 6 because the valve 16B, initially pressed on the wall 12B, is now "stuck" by the pressure difference between these two compartments.

La pression du compartiment 5 augmente par rapport à celle régnant dans la tubulure 3.The pressure in compartment 5 increases relative to that prevailing in tubing 3.

Le fluide du compartiment 5 est ainsi refoulé vers la tubulure de refoulement 3.The fluid in compartment 5 is thus discharged towards the discharge pipe 3.

Comme le compartiment 6 intermédiaire augmente, une dépression se produit dans ce compartiment, obligeant le clapet 16 à s'ouvrir et le fluide du compartiment 4 et de la tubulure 2 est aspiré vers le compartiment 6.As the intermediate compartment 6 increases, a vacuum occurs in this compartment, forcing the valve 16 to open and the fluid from the compartment 4 and the tube 2 is sucked towards the compartment 6.

Dans les deux phases de fonctionnement de la pompe, du fluide est aspiré de la tubulure 2 d'aspiration.In the two operating phases of the pump, fluid is sucked from the suction pipe 2.

Dans les deux phases de fonctionnement de la pompe, du fluide est refoulé par la tubulure 3 de refoulement.In the two operating phases of the pump, fluid is discharged through the pipe 3 of repression.

A chaque phase de fonctionnement de l'appareil, du fluide est aspiré ou refoulé par le compartiment intermédiaire 6.At each operating phase of the device, fluid is sucked in or discharged through the intermediate compartment 6.

On comprend ainsi ce qui permet d'obtenir des débits et des rendements élevés.We thus understand what makes it possible to obtain high throughputs and yields.

Il n'y a plus un fonctionnement actif un temps sur deux, comme pour les pompes volumétriques antérieures, ceci avec la perte d'énergie cinétique qui en résulte pour le fluide. Celui-ci est constamment aspiré dans le compartiment d'aspiration et refoulé de celui de refoulement.There is no longer an active operation every other time, as for the previous positive displacement pumps, this with the resulting loss of kinetic energy for the fluid. This is constantly sucked into the suction compartment and discharged from the discharge compartment.

Pendant le fonctionnement, une seule paroi travaille à la fois, l'autre se déplaçant, sans exercer d'action sur le fluide, afin de venir en une position convenable lui permettant de travailler.à la phase suivante.During operation, only one wall works at a time, the other moving, without exerting any action on the fluid, in order to come into a suitable position allowing it to work in the next phase.

A la figure 3, les sièges 20 sont issus de l'enveloppe 1. Sur ces sièges, s'appliquent des membranes 21, 22 solidaires des pistons 15 et 15B et retenues en deux points 23, 24 diamétralement opposés à leur siège 20. Les deux points 23, 24 permettent aussi d'assurer le guidage du piston 15 et facilitent l'obtention de l'étanchéité à la fermeture.In FIG. 3, the seats 20 come from the casing 1. On these seats apply membranes 21, 22 secured to the pistons 15 and 15B and retained at two points 23, 24 diametrically opposite their seats 20. The two points 23, 24 also make it possible to ensure the guiding of the piston 15 and facilitate obtaining the seal upon closing.

Claims (6)

1. Pompe formée d'une enveloppe (1) étanche ayant une tubulure (2) d'aspiration et une tubulure (3) de refoulement, de deux parois (A, B) à membrane (16) et siège (11), à l'intérieur de l'enveloppe, qui délimitent entre elles un compartiment (6) intermédiaire compris entre deux compartiments (4, 5) d'aspiration et de refoulement communiquant respectivement avec les tubulures (2, 3) et qui n'autorisent le passage d'un fluide que du compartiment (4) d'aspiration à celui (6) intermédiaire et que de ce dernier (6) au compartiment (5) de refoulement, et de moyens (15, 19) pour éloigner et rapprocher alternativement les parois (A, B) entre elles, caractérisée en ce qu'une membrane (16) est retenue localement à son siège (11).1. Pump formed of a sealed casing (1) having a suction pipe (2) and a delivery pipe (3), two walls (A, B) with membrane (16) and seat (11), the interior of the envelope, which delimit between them an intermediate compartment (6) comprised between two suction and discharge compartments (4, 5) communicating respectively with the pipes (2, 3) and which do not allow passage of a fluid only from the suction compartment (4) to that (6) intermediate and that from the latter (6) to the delivery compartment (5), and means (15, 19) for alternately moving and bringing the walls apart (A, B) therebetween, characterized in that a membrane (16) is retained locally at its seat (11). 2. Pompe suivant la revendication 1, caractérisée en ce que chaque membrane est retenue à son siège.2. Pump according to claim 1, characterized in that each membrane is retained at its seat. 3. Pompe suivant la revendication 1 ou 2, caractérisée en ce que le siège est rigide et la membrane est retenue au siège en deux endroits diamétralement opposés.3. Pump according to claim 1 or 2, characterized in that the seat is rigid and the membrane is retained at the seat in two diametrically opposite locations. 4. Pompe suivant- les revendications 1 à 3, caractérisée en ce que le siège comprend une grille rigide, sur le pourtour de laquelle est fixée une jupe élastique dont le pourtour extérieur est fixé à l'enveloppe.4. Pump according to claims 1 to 3, characterized in that the seat comprises a rigid grid, on the periphery of which is fixed an elastic skirt whose outer periphery is fixed to the envelope. 5. Pompe suivant l'une des revendications 1 à 4, caractérisée en ce qu'elle comprend plusieurs pompes unitaires, telles que définies aux revendications précédentes, en parallèle, dont les compartiments d'aspiration d'une part et de refoulement d'autre part communiquent entre eux.5. Pump according to one of claims 1 to 4, characterized in that it comprises several unit pumps, as defined in the preceding claims, in parallel, including the suction compartments on the one hand and the delivery compartment on the other share communicate with each other. 6. Pompe suivant la revendication 5, caractérisée en ce que les moyens pour rapprocher et éloigner les membranes sont déphasés dans le temps d'une pompe unitaire à l'autre.6. Pump according to claim 5, charac terized in that the means for bringing the membranes closer and further apart are phase shifted from one unit pump to another.
EP81400031A 1980-01-11 1981-01-12 Volumetric pump Expired EP0032473B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81400031T ATE8427T1 (en) 1980-01-11 1981-01-12 VOLUMETRIC PUMP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8000569 1980-01-11
FR8000569A FR2473646A1 (en) 1980-01-11 1980-01-11 VOLUMETRIC PUMP

Publications (2)

Publication Number Publication Date
EP0032473A1 true EP0032473A1 (en) 1981-07-22
EP0032473B1 EP0032473B1 (en) 1984-07-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400031A Expired EP0032473B1 (en) 1980-01-11 1981-01-12 Volumetric pump

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EP (1) EP0032473B1 (en)
AT (1) ATE8427T1 (en)
DE (1) DE3164624D1 (en)
FR (1) FR2473646A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221034A1 (en) * 1985-09-20 1987-05-06 Astra-Tech Aktiebolag Pump with continuous inflow and pulsating outflow
WO2001020166A1 (en) * 1999-09-15 2001-03-22 Honeywell Inc. Dual diaphragm pump
WO2013171453A1 (en) * 2012-05-17 2013-11-21 Selwood Group Limited Diaphragm pump

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR366449A (en) * 1906-05-21 1906-10-04 Rudolf Terberger Diaphragm pump intended for the delivery of large quantities of liquids, especially on board ships
GB191000699A (en) * 1910-01-11 1910-10-20 Theodore Wiedemann Improvement in Method of Pumping Air or other Fluids.
GB343304A (en) * 1930-02-06 1931-02-19 Charles Henry Woodfield Improvements in connection with pumps of the diaphragm type
DE552836C (en) * 1930-06-28 1932-06-18 Reinhard Wussow Electromagnetically operated pump
GB539247A (en) * 1940-03-13 1941-09-02 Robert Arthur Chalmers Improvements in or relating to diaphragm pumps
FR1355609A (en) * 1963-01-23 1964-03-20 Avialex Advanced diaphragm type pump
GB992591A (en) * 1961-12-19 1965-05-19 Arthur Lyon & Co Engineers Ltd Improvements relating to diaphragm pumps
FR1503605A (en) * 1965-08-26 1967-12-01 Orbital Eng Pty Liquid circulation pump
FR2049632A5 (en) * 1969-06-13 1971-03-26 Ganzinotti Jean
CH573550A5 (en) * 1973-01-26 1976-03-15 Klaue Hermann Magnetic push pull compressor - has diaphragms or pistons which reciprocate by electro magnets
FR2307987A1 (en) * 1975-04-15 1976-11-12 Selwood Ltd William R PUMP IMPROVEMENTS

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR366449A (en) * 1906-05-21 1906-10-04 Rudolf Terberger Diaphragm pump intended for the delivery of large quantities of liquids, especially on board ships
GB191000699A (en) * 1910-01-11 1910-10-20 Theodore Wiedemann Improvement in Method of Pumping Air or other Fluids.
GB343304A (en) * 1930-02-06 1931-02-19 Charles Henry Woodfield Improvements in connection with pumps of the diaphragm type
DE552836C (en) * 1930-06-28 1932-06-18 Reinhard Wussow Electromagnetically operated pump
GB539247A (en) * 1940-03-13 1941-09-02 Robert Arthur Chalmers Improvements in or relating to diaphragm pumps
GB992591A (en) * 1961-12-19 1965-05-19 Arthur Lyon & Co Engineers Ltd Improvements relating to diaphragm pumps
FR1355609A (en) * 1963-01-23 1964-03-20 Avialex Advanced diaphragm type pump
FR1503605A (en) * 1965-08-26 1967-12-01 Orbital Eng Pty Liquid circulation pump
FR2049632A5 (en) * 1969-06-13 1971-03-26 Ganzinotti Jean
CH573550A5 (en) * 1973-01-26 1976-03-15 Klaue Hermann Magnetic push pull compressor - has diaphragms or pistons which reciprocate by electro magnets
FR2307987A1 (en) * 1975-04-15 1976-11-12 Selwood Ltd William R PUMP IMPROVEMENTS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221034A1 (en) * 1985-09-20 1987-05-06 Astra-Tech Aktiebolag Pump with continuous inflow and pulsating outflow
WO2001020166A1 (en) * 1999-09-15 2001-03-22 Honeywell Inc. Dual diaphragm pump
WO2013171453A1 (en) * 2012-05-17 2013-11-21 Selwood Group Limited Diaphragm pump

Also Published As

Publication number Publication date
EP0032473B1 (en) 1984-07-11
DE3164624D1 (en) 1984-08-16
FR2473646A1 (en) 1981-07-17
FR2473646B1 (en) 1982-09-17
ATE8427T1 (en) 1984-07-15

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