EP1952021A1 - Positive displacement pumping device comprising a joint-free dispensing member - Google Patents

Positive displacement pumping device comprising a joint-free dispensing member

Info

Publication number
EP1952021A1
EP1952021A1 EP06841812A EP06841812A EP1952021A1 EP 1952021 A1 EP1952021 A1 EP 1952021A1 EP 06841812 A EP06841812 A EP 06841812A EP 06841812 A EP06841812 A EP 06841812A EP 1952021 A1 EP1952021 A1 EP 1952021A1
Authority
EP
European Patent Office
Prior art keywords
chamber
pumping
piston
pumping device
distribution
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
EP06841812A
Other languages
German (de)
French (fr)
Other versions
EP1952021B1 (en
Inventor
Olivier Peru
Claude Robert
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.)
Serac Group SAS
Original Assignee
Serac Group SAS
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 Serac Group SAS filed Critical Serac Group SAS
Priority to SI200630385T priority Critical patent/SI1952021T1/en
Publication of EP1952021A1 publication Critical patent/EP1952021A1/en
Application granted granted Critical
Publication of EP1952021B1 publication Critical patent/EP1952021B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
    • F04B7/0015—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having a slidable movement
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0076—Piston machines or pumps characterised by having positively-driven valving the members being actuated by electro-magnetic means

Definitions

  • Volumetric pumping device comprising a dispenser member without a seal.
  • the present invention relates to a volumetric pumping device.
  • Volumetric pumping devices comprising a pumping member associated with a dispensing member comprising a body containing a dispensing chamber having connection orifices with the pumping member, with an intake duct connected to a tank of supply, and with a discharge pipe, and wherein a distribution element is mounted movable in a longitudinal direction of the distribution chamber and is actuated by a control member to alternately put the pump member in connection with the conduit d admission or with the discharge duct.
  • the dispensing element is mounted to slide in an alternating movement in the dispensing chamber and comprises rubber-mounted rubber dampers. dispensing element outside the dispensing chamber.
  • the connection of the pumping chamber with the intake duct or the discharge duct is a function of the position of the dispensing element.
  • pumped product accumulates between the O-valves and the dispensing member. This product is difficult to extract during washing so that in practice it is not possible to pump under aseptic conditions with the existing devices.
  • An object of the present invention is to provide a volumetric pumping device that can easily operate under aseptic conditions.
  • a volumetric pumping device comprising a pumping member associated with a dispensing member comprising a body containing a dispensing chamber comprising connecting orifices.
  • a distribution element being mounted movable along a longitudinal axis of the distribution chamber and being actuated by an organ command, the port connecting with the intake duct and the connecting opening with the discharge duct being disposed facing one another coaxially to the longitudinal axis of 'the distribution chamber on either and other of the connecting port with the pumping member and being adjacent to seats facing inwardly of the dispensing chamber, and the dispensing member having ends c configured to form valves adapted to bear tightly on one or the other of the seats under the action of the control member of the dispensing element.
  • the dispensing element can be easily cleaned by removing the valve from its seat and by flowing cleaning product around the valve. flapper.
  • the pumping member comprises a cylindrical pumping chamber in which is mounted a seamless piston connected to an actuating member for moving the piston. in an axial direction of the pumping chamber, and at an end opposite to the connection orifice of the distribution chamber with the pumping chamber, the pumping chamber is connected to the feed tank, the piston being mounted in the pumping chamber with a sufficiently low clearance so that a product contained in the feed tank does not flow around the piston.
  • the pumping member comprises an auxiliary chamber which is coaxial with the pumping chamber and which opens into the feed tank, and preferably the actuating member of the pumping piston. a stroke sufficient to bring the piston completely into the auxiliary chamber, the auxiliary chamber having a sufficient diameter to then allow a product flow around the piston. Then the auxiliary chamber has a triple function, that is to say that, for a position of the piston in the pumping chamber, it performs the function of sealing the piston 1 and when the piston is brought into the auxiliary chamber during the washing the piston is largely subjected to the effects of the cleaning agent so that the auxiliary chamber functions as a piston washing chamber.
  • the pumping chamber is disengaged and is therefore thoroughly cleaned by the washing product.
  • the piston is brought into the auxiliary chamber so that the product flows around the piston to fill the pumping chamber and the distribution chamber, and the bubbles air can flow back into the feed tank so that the chamber the auxiliary chamber has a feeding chamber function.
  • FIG. 1 is a view in axial section through a vertical plane of the device according to the invention and of the feed tank which is associated with it, for an intake position of the distribution element,
  • Figure 2 is a sectional view similar to that of Figure 1, for a washing position of the pumping device.
  • the pumping device comprises a pumping member 1 connected to a feed tank 2 and associated with a dispenser member 3.
  • the pumping member comprises a feed body pumping 4 comprising a pumping chamber 5 in which a piston 6 without seal is mounted to slide with a very small clearance, for example a few tenths of a millimeter.
  • the piston 6 is actuated by a rod 7 connected to an actuating organ 8.
  • the pumping member 1 Between the pumping chamber 5 and the feed tank 2, the pumping member 1 comprises an auxiliary chamber 9 coaxial with the pumping chamber 5, having a transverse dimension D much greater than a transverse dimension d of the pumping chamber. 5 and opening into the feed tank 2.
  • the dispensing member 3 comprises a body 10 containing an elongate cylindrical distribution chamber 11 having a longitudinal axis 36.
  • the dispensing chamber 11 comprises a connecting orifice 12 with the or-
  • the connection port 12 opens laterally into the distribution chamber 11.
  • the distribution chamber 11 has orifices, 13 and 14 respectively, coaxial with the longitudinal axis 36 and extending facing each other, on either side of the connecting orifice 12.
  • Adjacent to the connecting orifices 13 and 14, the distribution chamber comprises zones configured to make seats, respectively 33 and 34, coaxial with the connecting openings and turned inwardly of the distribution chamber.
  • the seats 33, 34 are each arranged to receive an end configured to form a valve, respectively 15 and 16, of a cylindrical dispensing member 17 mounted to slide in a longitudinal direction of the dispensing chamber.
  • the valves 15, 16 are therefore mounted between the seats 33, 34.
  • the dispensing element has a control rod 18 extending into a bore 27 and connected to a control member 19.
  • the control member 19 comprises a body 1 of actuator 35 and a coupling member 20 without crossing wall.
  • the coupling member comprises, in a manner known per se, a magnet 21 carried by a rod 22 associated with the actuating member 35 and movably mounted in a glove finger 23 made of anametic material, and a magnetized ring. 24 surrounding the glove finger 23 and connected to the control rod 18 by a stirrup 25.
  • the dispensing element 17 is kept coaxial with the distribution chamber 11 by guide vanes 26 sliding in the bore 27 coaxial with the distribution chamber 11, and guide flanges 28 sliding in a bore 29 also coaxial with the distribution chamber 11.
  • the connecting orifice 14 is connected to an intake duct 30 via the bore 27 and an inlet chamber 31 surrounding the organ at its upper end, the intake duct 30 opens at the lower end of the auxiliary chamber 9.
  • the connecting orifice 13 is connected to a delivery conduit 32 through the bore 29.
  • the discharge conduit 32 is connected to a dosing nozzle not shown.
  • the actuating member 8 has a stroke sufficient to not only maneuver the piston 6 in a reciprocating movement in the pumping chamber 5, but also to pull the piston 6 out of the pumping chamber 5 to in the auxiliary chamber 9 as illustrated in Figure 2.
  • the valve 15 of the dispensing element 17 is shaped to seal the connection orifice 13 when the valve 15 bears on the seat 33 adjacent to the orifice 13.
  • the valve 16 is shaped to seal the connecting orifice 14 'when the valve 16 is in abutment against the seat 34 adjacent to this opening.
  • the distance between the valves 15 and 16 is less than the distance between the seats 33 and 34 so that when one of the connecting ports is closed, the other opening is wide open.
  • the distribution element 17 has a transverse dimension substantially smaller than the transverse dimension of the distribution chamber 11 so that the product to be dispensed flows easily around the dispensing element 17 when one of the orifices link 13 or 14 is open.
  • the valve 16 is brought to bear against its seat 34 so that the connecting orifice 13 is largely open.
  • the piston 6 is raised in the auxiliary chamber 9 as illustrated in FIG. 2.
  • the product to be conditioned flows by gravity. in the auxiliary chamber 9 and flows around the piston 6 to ensure on the one hand the filling of the inlet duct 30 and on the other hand the filling of the pumping chamber 5 and the filling of the distribution chamber 11 and the discharge duct 32.
  • the auxiliary chamber 9 thus has a booster chamber function.
  • the piston 6 is then lowered to the maximum of its stroke in the pumping chamber 5 and is then moved back and forth in a stroke holding the piston 6 in the pumping chamber 5.
  • the valve 15 is brought into abutment against the seat 33 adjacent to the connection opening 13 to close it.
  • the connection opening 14 is then largely open and the product to be conditioned is sucked into the pumping chamber 5 through the auxiliary chamber 9 and the intake duct 30, the inlet chamber 31 and the distribution chamber 11
  • the dispensing element 17 is moved to close the connection orifice 14 and open the connecting orifice 13 so that a volume of product corresponding to the stroke of the piston 6 is propelled by the piston 6 in the discharge conduit 32.
  • the auxiliary chamber 9 then performs a sealing chamber function with respect to the piston.
  • auxiliary chamber is interposed between the pumping chamber and the feed tank
  • the invention can be carried out with a pumping chamber opening directly into the feed tank which then functions auxiliary chamber for both feeding and pumping and washing.
  • auxiliary chamber can be separated from the feed tank and connected thereto by a conduit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Joints Allowing Movement (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Mechanical Sealing (AREA)

Abstract

The volume-metering pump device comprises a pump member associated with a manifold member comprising a body containing a manifold chamber having ports providing connections with the pump member, with an admission duct connected to a feed vessel, and with a discharge duct, and in which a manifold control element is mounted to move along a longitudinal axis of the manifold chamber, the ports providing connections with the admission duct and with the discharge duct being disposed facing each other and being coaxial about the longitudinal axis of the manifold chamber on either side of the port providing a connection with the pump member, and being adjacent to seats facing towards the inside of the manifold chamber with which valve-member forming portions made at the ends of the manifold control element co-operate to enable one or the other of the ports to be closed.

Description

Dispositif de pompage volumétrique comportant un organe de distribution sans joint. Volumetric pumping device comprising a dispenser member without a seal.
La présente invention concerne un dispositif de pompage volumétrique .The present invention relates to a volumetric pumping device.
ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION
On connaît des dispositifs de pompage volumétrique comportant un organe de pompage associé à un organe de distribution comprenant un corps contenant une chambre de distribution comportant des orifices de liaison avec l'organe de pompage, avec un conduit d'admission relié à une cuve d'alimentation, et avec un conduit de refoulement, et dans laquelle un élément de distribution est monté mobile selon une direction longitudinale de la chambre de distribution et est actionné par un organe de commande pour mettre alternativement l'organe de pompage en liaison avec le conduit d'admission ou avec le conduit 'de refoulement .Volumetric pumping devices are known comprising a pumping member associated with a dispensing member comprising a body containing a dispensing chamber having connection orifices with the pumping member, with an intake duct connected to a tank of supply, and with a discharge pipe, and wherein a distribution element is mounted movable in a longitudinal direction of the distribution chamber and is actuated by a control member to alternately put the pump member in connection with the conduit d admission or with the discharge duct.
Dans les dispositifs existants, notamment le dis- positif décrit dans le document GB-A-968 452, l'élément de distribution est monté pour coulisser selon un mouvement alterné dans la chambre de distribution et comporte des clapets toriques en caoutchouc montés sur l'élément de distribution à l'extérieur de la chambre de distribu- tion. Lors du fonctionnement du dispositif de pompage, la liaison de la chambre de pompage avec le conduit d'admission ou le conduit de refoulement est fonction de la position de l'élément de distribution. Lors des déplacements de l'élément de distribution, du produit pompé s'accumule entre les clapets toriques et l'élément de distribution. Ce produit est difficilement extrait lors du lavage de sorte qu'en pratique il n'est pas possible de réaliser un pompage dans des conditions aseptiques avec les dispositifs existants. OBJET DE L'INVENTION Un but de la présente invention est de proposer un dispositif de pompage volumétrique pouvant aisément fonctionner dans des conditions aseptiques.In existing devices, in particular the device described in GB-A-968 452, the dispensing element is mounted to slide in an alternating movement in the dispensing chamber and comprises rubber-mounted rubber dampers. dispensing element outside the dispensing chamber. During operation of the pumping device, the connection of the pumping chamber with the intake duct or the discharge duct is a function of the position of the dispensing element. As the dispensing member moves, pumped product accumulates between the O-valves and the dispensing member. This product is difficult to extract during washing so that in practice it is not possible to pump under aseptic conditions with the existing devices. OBJECT OF THE INVENTION An object of the present invention is to provide a volumetric pumping device that can easily operate under aseptic conditions.
RESUME DE L'INVENTION En vue de la réalisation de ce but on propose, selon l'invention, un dispositif de pompage volumétrique comportant un organe de pompage associé à un organe de distribution comprenant un corps contenant une chambre de distribution comprenant des orifices de liaison avec l'organe de pompage, avec un conduit d'admission relié à une cuve d'alimentation, et avec un conduit de refoulement, un élément de distribution étant monté mobile selon un axe longitudinal de la chambre de distribution et étant actionné par un organe de commande, l'orifice de liaison avec le conduit d'admission et l'orifice de liaison avec le conduit de refoulement étant disposés en regard l'un de l'autre coaxialement à l'axe longitudinal de 'la chambre de distribution de part et d'autre de l'orifice de liaison avec l'organe de pompage et étant adja- cents à des sièges tournés vers l'intérieur de la chambre de distribution, et l'élément de distribution ayant des extrémités configurées pour former des clapets adaptés à venir en appui étanche sur l'un ou l'autre des sièges sous l'action de l'organe de commande de l'élément de distribution.SUMMARY OF THE INVENTION With a view to achieving this object, it is proposed, according to the invention, a volumetric pumping device comprising a pumping member associated with a dispensing member comprising a body containing a dispensing chamber comprising connecting orifices. with the pumping member, with an intake duct connected to a supply tank, and with a delivery duct, a distribution element being mounted movable along a longitudinal axis of the distribution chamber and being actuated by an organ command, the port connecting with the intake duct and the connecting opening with the discharge duct being disposed facing one another coaxially to the longitudinal axis of 'the distribution chamber on either and other of the connecting port with the pumping member and being adjacent to seats facing inwardly of the dispensing chamber, and the dispensing member having ends c configured to form valves adapted to bear tightly on one or the other of the seats under the action of the control member of the dispensing element.
Ainsi, tout en assurant une fermeture étanche de l'un des orifices de liaison lors du fonctionnement du dispositif de pompage, l'élément de distribution peut être aisément nettoyé en écartant le clapet de son siège et en faisant couler du produit de nettoyage autour du clapet .Thus, while ensuring a tight closure of one of the connecting ports during operation of the pumping device, the dispensing element can be easily cleaned by removing the valve from its seat and by flowing cleaning product around the valve. flapper.
Selon une version avantageuse de 1 ' invention, 1 ' organe de pompage comprend une chambre de pompage cylindrique dans laquelle est monté un piston sans joint relié à un organe d ' actionnement pour déplacer le piston selon une direction axiale de la chambre de pompage, et à une extrémité opposée à l'orifice de liaison de la chambre de distribution avec la chambre de pompage, la chambre de pompage est reliée à la cuve d'alimentation, le piston étant monté dans la chambre de pompage avec un jeu suffisamment faible pour qu'un produit contenu dans la cuve d'alimentation ne s'écoule pas autour du piston.According to an advantageous version of the invention, the pumping member comprises a cylindrical pumping chamber in which is mounted a seamless piston connected to an actuating member for moving the piston. in an axial direction of the pumping chamber, and at an end opposite to the connection orifice of the distribution chamber with the pumping chamber, the pumping chamber is connected to the feed tank, the piston being mounted in the pumping chamber with a sufficiently low clearance so that a product contained in the feed tank does not flow around the piston.
Ainsi, lors du pompage d'un produit, un film du produit de faible épaisseur se forme entre le piston et la chambre de pompage, de sorte qu'une étanchéité est assurée entre le piston et la chambre de pompage et ce film de produit est facilement éliminé lors du lavage.Thus, when pumping a product, a film of the thin product is formed between the piston and the pumping chamber, so that a seal is provided between the piston and the pumping chamber and this product film is easily removed during washing.
Selon d'autres aspects avantageux de l'invention, l'organe de pompage comporte une chambre auxiliaire qui est coaxiale à la chambre de pompage et qui débouche dans la cuve d'alimentation, et de préférence l'organe d' actionnement du piston a une course suffisante pour amener le piston totalement dans la chambre auxiliaire, la chambre auxiliaire ayant un diamètre suffisant pour permettre alors un écoulement de produit autour du piston. La chambre auxiliaire a alors une triple fonction, c'est-à-dire que pour une position du piston dans la chambre de pompage, elle assure la fonction d1 étanchéité du piston et quand le piston est amené dans la chambre auxiliaire lors du lavage, le piston est largement soumis aux effets du produit de nettoyage de sorte que la chambre auxiliaire a une fonction de chambre de lavage du piston. En outre dans cette position du piston, la chambre de pompage est dégagée et est donc bien nettoyée par le produit de lavage. Enfin, lors du remplissage initial de l'installation avec du produit à conditionner le piston est amené dans la chambre auxiliaire de sorte que le produit s'écoule autour du piston pour remplir la chambre de pompage et la chambre de distribution, et les bulles d'air peuvent remonter dans la cuve d'alimentation de sorte que la chambre la chambre auxiliaire a une fonction de chambre de gavage .According to other advantageous aspects of the invention, the pumping member comprises an auxiliary chamber which is coaxial with the pumping chamber and which opens into the feed tank, and preferably the actuating member of the pumping piston. a stroke sufficient to bring the piston completely into the auxiliary chamber, the auxiliary chamber having a sufficient diameter to then allow a product flow around the piston. Then the auxiliary chamber has a triple function, that is to say that, for a position of the piston in the pumping chamber, it performs the function of sealing the piston 1 and when the piston is brought into the auxiliary chamber during the washing the piston is largely subjected to the effects of the cleaning agent so that the auxiliary chamber functions as a piston washing chamber. In addition in this position of the piston, the pumping chamber is disengaged and is therefore thoroughly cleaned by the washing product. Finally, during the initial filling of the installation with the product to be conditioned, the piston is brought into the auxiliary chamber so that the product flows around the piston to fill the pumping chamber and the distribution chamber, and the bubbles air can flow back into the feed tank so that the chamber the auxiliary chamber has a feeding chamber function.
BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS
D'autres caractéristiques et avantages de 1 ' in- vention apparaîtront à la lecture de la description qui suit d'un mode de réalisation préféré non limitatif de l'invention, en référence aux figures ci-jointes parmi lesquelles :Other characteristics and advantages of the invention will appear on reading the following description of a preferred non-limiting embodiment of the invention, with reference to the attached figures among which:
- la figure 1 est une vue en coupe axiale par un plan vertical du dispositif selon l'invention et de la cuve d'alimentation qui lui est associée, pour une position d'admission de l'élément de distribution,FIG. 1 is a view in axial section through a vertical plane of the device according to the invention and of the feed tank which is associated with it, for an intake position of the distribution element,
- la figure 2 est une vue en coupe analogue à celle de la figure 1, pour une position de lavage du dis- positif de pompage.- Figure 2 is a sectional view similar to that of Figure 1, for a washing position of the pumping device.
DESCRIPTION DETAILLEE DE L'INVENTION En référence à la figure 1, le dispositif de pompage comporte un organe de pompage 1 relié à une cuve d'alimentation 2 et à associé à un organe de distribution 3. L'organe de pompage comprend un corps de pompage 4 comprenant une chambre de pompage 5 dans laquelle un piston 6 sans joint est monté pour coulisser avec un très faible jeu, par exemple quelques dixièmes de millimètres. Le piston 6 est actionné par une tige 7 reliée à un or- gane d' actionnement 8.DETAILED DESCRIPTION OF THE INVENTION With reference to FIG. 1, the pumping device comprises a pumping member 1 connected to a feed tank 2 and associated with a dispenser member 3. The pumping member comprises a feed body pumping 4 comprising a pumping chamber 5 in which a piston 6 without seal is mounted to slide with a very small clearance, for example a few tenths of a millimeter. The piston 6 is actuated by a rod 7 connected to an actuating organ 8.
Entre la chambre de pompage 5 et la cuve d'alimentation 2, l'organe de pompage 1 comporte une chambre auxiliaire 9 coaxiale à la chambre de pompage 5, ayant une dimension transversale D largement supérieure à une dimension transversale d de la chambre de pompage 5 et débouchant dans la cuve d'alimentation 2.Between the pumping chamber 5 and the feed tank 2, the pumping member 1 comprises an auxiliary chamber 9 coaxial with the pumping chamber 5, having a transverse dimension D much greater than a transverse dimension d of the pumping chamber. 5 and opening into the feed tank 2.
L'organe de distribution 3 comporte un corps 10 contenant une chambre de distribution allongée cylindrique 11 ayant un axe longitudinal 36. La chambre de dis- tribution 11 comporte un orifice de liaison 12 avec l'or- gane de pompage 1. L'orifice de liaison 12 débouche latéralement dans la chambre de distribution 11. A chacune de ses extrémités, la chambre de distribution 11 comporte des orifices, respectivement 13 et 14, coaxiaux avec l'axe longitudinal 36 et s 'étendant en regard l'un de l'autre, de part et d'autre de l'orifice de liaison 12. De façon adjacente aux orifices de liaison 13 et 14, la chambre de distribution comporte des zones configurées pour réaliser des sièges, respectivement 33 et 34, coaxiaux aux ouvertures de liaison et tournés vers l'intérieur de la chambre de distribution. Les sièges 33, 34 sont disposés pour chacun recevoir une extrémité configurée pour former un clapet, respectivement 15 et 16, d'un élément de distribution cylindrique 17 monté pour coulis- ser selon une direction longitudinale de la chambre de distribution. Les clapets 15, 16 sont donc montés entre les sièges 33, 34.The dispensing member 3 comprises a body 10 containing an elongate cylindrical distribution chamber 11 having a longitudinal axis 36. The dispensing chamber 11 comprises a connecting orifice 12 with the or- The connection port 12 opens laterally into the distribution chamber 11. At each of its ends, the distribution chamber 11 has orifices, 13 and 14 respectively, coaxial with the longitudinal axis 36 and extending facing each other, on either side of the connecting orifice 12. Adjacent to the connecting orifices 13 and 14, the distribution chamber comprises zones configured to make seats, respectively 33 and 34, coaxial with the connecting openings and turned inwardly of the distribution chamber. The seats 33, 34 are each arranged to receive an end configured to form a valve, respectively 15 and 16, of a cylindrical dispensing member 17 mounted to slide in a longitudinal direction of the dispensing chamber. The valves 15, 16 are therefore mounted between the seats 33, 34.
L'élément de distribution comporte une tige de commande 18 s 'étendant dans un alésage 27 et reliée à un organe de commande 19. L'organe de commande 19 comprend un organe d1 actionnement 35 et un organe d'accouplement 20 sans traversée de paroi. Par exemple l'organe d'accouplement comprend de façon connue en soi un aimant 21 porté par une tige 22 associée à l'organe d' actionnement 35 et monté mobile dans un doigt de gant 23 en matériau ama- gnétique, et une bague aimantée 24 entourant le doigt de gant 23 et reliée à la tige de commande 18 par un étrier 25. L'élément de distribution 17 est maintenu coaxial à la chambre de distribution 11 par des ailettes de guidage 26 coulissant dans l'alésage 27 coaxial à la chambre de distribution 11, et des ailes de guidage 28 coulissant dans un alésage 29 également coaxial à la chambre de distribution 11. L'orifice de liaison 14 est relié à un conduit d'admission 30 par l'intermédiaire de l'alésage 27 et d'une chambre d'admission 31 entourant l'organe d'accouplement 20. A son extrémité supérieure, le conduit d'admission 30 débouche à l'extrémité inférieure de la chambre auxiliaire 9.The dispensing element has a control rod 18 extending into a bore 27 and connected to a control member 19. The control member 19 comprises a body 1 of actuator 35 and a coupling member 20 without crossing wall. For example, the coupling member comprises, in a manner known per se, a magnet 21 carried by a rod 22 associated with the actuating member 35 and movably mounted in a glove finger 23 made of anametic material, and a magnetized ring. 24 surrounding the glove finger 23 and connected to the control rod 18 by a stirrup 25. The dispensing element 17 is kept coaxial with the distribution chamber 11 by guide vanes 26 sliding in the bore 27 coaxial with the distribution chamber 11, and guide flanges 28 sliding in a bore 29 also coaxial with the distribution chamber 11. The connecting orifice 14 is connected to an intake duct 30 via the bore 27 and an inlet chamber 31 surrounding the organ at its upper end, the intake duct 30 opens at the lower end of the auxiliary chamber 9.
L'orifice de liaison 13 est relié à un conduit de refoulement 32 par l'alésage 29. Le conduit de refoulement 32 est relié à un bec de dosage non représenté.The connecting orifice 13 is connected to a delivery conduit 32 through the bore 29. The discharge conduit 32 is connected to a dosing nozzle not shown.
Par ailleurs, l'organe d' actionnement 8 a une course suffisante pour non seulement manœuvrer le piston 6 selon un mouvement de va et vient dans la chambre de pompage 5, mais également pour tirer le piston 6 hors de la chambre de pompage 5 jusque dans la chambre auxiliaire 9 comme illustré sur la figure 2.Furthermore, the actuating member 8 has a stroke sufficient to not only maneuver the piston 6 in a reciprocating movement in the pumping chamber 5, but also to pull the piston 6 out of the pumping chamber 5 to in the auxiliary chamber 9 as illustrated in Figure 2.
Le clapet 15 de l'élément de distribution 17 est conformé pour fermer de façon étanche l'orifice de liai- son 13 lorsque le clapet 15 est en appui sur le siège 33 adjacent à l'orifice 13. De même le clapet 16 est conformé pour fermer de façon étanche l'orifice de liaison 14 'lorsque le clapet 16 est en appui contre le siège 34 adjacent à cette ouverture. La distance entre les clapets 15 et 16 est inférieure à la distance entre les sièges 33 et 34 de façon que lorsqu'un des orifices de liaison est fermé, l'autre orifice soit largement ouvert. En outre, l'élément de distribution 17 a une dimension transversale sensiblement inférieure à la dimension transversale de la chambre de distribution 11 de façon que le produit à distribuer s'écoule aisément autour de l'élément de distribution 17 lorsque l'un des orifices de liaison 13 ou 14 est ouvert .The valve 15 of the dispensing element 17 is shaped to seal the connection orifice 13 when the valve 15 bears on the seat 33 adjacent to the orifice 13. Similarly, the valve 16 is shaped to seal the connecting orifice 14 'when the valve 16 is in abutment against the seat 34 adjacent to this opening. The distance between the valves 15 and 16 is less than the distance between the seats 33 and 34 so that when one of the connecting ports is closed, the other opening is wide open. In addition, the distribution element 17 has a transverse dimension substantially smaller than the transverse dimension of the distribution chamber 11 so that the product to be dispensed flows easily around the dispensing element 17 when one of the orifices link 13 or 14 is open.
Lors du démarrage initial de 1 ' installation comportant le dispositif de pompage selon l'invention, le clapet 16 est amené en appui contre son siège 34 de sorte que l'orifice de liaison 13 est largement ouvert. Par ailleurs, le piston 6 est remonté dans la chambre auxiliaire 9 comme illustré dans la figure 2. Dans cette po- sition, le produit à conditionner s'écoule par gravité dans la chambre auxiliaire 9 et s'écoule autour du piston 6 pour assurer d'une part le remplissage du conduit d'admission 30 et d'autre part le remplissage de la chambre de pompage 5 ainsi que le remplissage de la chambre de distribution 11 et du conduit de refoulement 32. La chambre auxiliaire 9 a donc une fonction de chambre de gavage .At the initial start of the installation comprising the pumping device according to the invention, the valve 16 is brought to bear against its seat 34 so that the connecting orifice 13 is largely open. In addition, the piston 6 is raised in the auxiliary chamber 9 as illustrated in FIG. 2. In this position, the product to be conditioned flows by gravity. in the auxiliary chamber 9 and flows around the piston 6 to ensure on the one hand the filling of the inlet duct 30 and on the other hand the filling of the pumping chamber 5 and the filling of the distribution chamber 11 and the discharge duct 32. The auxiliary chamber 9 thus has a booster chamber function.
Le piston 6 est ensuite abaissé au maximum de sa course dans la chambre de pompage 5 puis il est animé d'un mouvement de va et vient selon une course maintenant le piston 6 dans la chambre de pompage 5. Lors de chaque mouvement du piston vers le haut, le clapet 15 est amené en appui contre le siège 33 adjacent à l'ouverture de liaison 13 pour fermer celle-ci. L'ouverture de liaison 14 est alors largement ouverte et du produit à conditionner est aspiré dans la chambre de pompage 5 en passant par la chambre auxiliaire 9 et le conduit d'admission 30, la chambre d'admission 31 et la chambre de distribution 11. A chaque mouvement vers le bas du piston 6, l'élément de distribution 17 est déplacé pour fermer l'orifice de liaison 14 et ouvrir l'orifice de liaison 13 de sorte qu'un volume de produit correspondant à la course du piston 6 est propulsé par le piston 6 dans le conduit de refoulement 32. La chambre auxiliaire 9 assure alors une fonction de chambre d'étanchéité à l'égard du piston.The piston 6 is then lowered to the maximum of its stroke in the pumping chamber 5 and is then moved back and forth in a stroke holding the piston 6 in the pumping chamber 5. During each movement of the piston to the top, the valve 15 is brought into abutment against the seat 33 adjacent to the connection opening 13 to close it. The connection opening 14 is then largely open and the product to be conditioned is sucked into the pumping chamber 5 through the auxiliary chamber 9 and the intake duct 30, the inlet chamber 31 and the distribution chamber 11 With each downward movement of the piston 6, the dispensing element 17 is moved to close the connection orifice 14 and open the connecting orifice 13 so that a volume of product corresponding to the stroke of the piston 6 is propelled by the piston 6 in the discharge conduit 32. The auxiliary chamber 9 then performs a sealing chamber function with respect to the piston.
Lorsque la cuve d'alimentation 2 est vide, un produit de lavage est introduit dans la cuve d'alimentation 2 et le dispositif de pompage est mis dans la position illustrée sur la figure 2, c'est-à-dire que le pis- ton 6 est relevé jusqu'à s'étendre dans la chambre d'étanchéité 9 et l'élément de distribution 17 est mis dans une position intermédiaire dans laquelle les orifices de liaison 13 et 14 sont tous les deux ouverts. Le liquide de lavage s'écoule alors dans le conduit de re- foulement 32 en passant simultanément par le conduit d'admission 30 et la chambre de pompage 5. La chambre auxiliaire 9 a alors une fonction de lavage. De plus, ce système permet une purge totale de l'air lors du lavage du bec, par remontée de l'air dans la cuve. Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit ci-dessus et est susceptible de variantes de réalisation qui apparaîtront à l'homme du métier sans sortir du cadre de 1 ' invention tel que défini par les revendications. En particulier, bien que le dispositif décrit combine un organe de distribution sans joint et un organe de pompage sans joint, l'organe de distribution sans joint pourrait être utilisé en relation avec un organe de pompage de structure traditionnelle, le conduit d'admis- sion étant alors directement relié à la cuve d'alimentation.When the feed tank 2 is empty, a washing product is introduced into the feed tank 2 and the pumping device is put in the position illustrated in FIG. 2, that is to say that the pis- 6 is raised up to extend in the sealing chamber 9 and the dispensing element 17 is placed in an intermediate position in which the connecting ports 13 and 14 are both open. The washing liquid then flows into the flow conduit 32, passing simultaneously through the conduit 30 and the pumping chamber 5. The auxiliary chamber 9 then has a washing function. In addition, this system allows a total purge of the air during the washing of the spout, by raising the air in the tank. Of course, the invention is not limited to the embodiment described above and is capable of alternative embodiments which will occur to those skilled in the art without departing from the scope of the invention as defined by the claims. In particular, although the described device combines a seamless distribution member and a seamless pumping member, the seamless distribution member could be used in connection with a pumping member of conventional structure, the admission duct sion then being directly connected to the feed tank.
Bien que dans le mode de réalisation illustré une chambre auxiliaire soit intercalée entre la chambre de pompage et la cuve d'alimentation, on peut réaliser 1 ' in- vention avec une chambre de pompage débouchant directement dans la cuve d'alimentation qui fait alors fonction de chambre auxiliaire tant pour le gavage que pour le pompage et le lavage.Although in the illustrated embodiment an auxiliary chamber is interposed between the pumping chamber and the feed tank, the invention can be carried out with a pumping chamber opening directly into the feed tank which then functions auxiliary chamber for both feeding and pumping and washing.
A 1 ' inverse la chambre auxiliaire peut être sépa- rée de la cuve d'alimentation et être reliée à celle-ci par un conduit . In contrast, the auxiliary chamber can be separated from the feed tank and connected thereto by a conduit.

Claims

REVENDICATIONS
1. Dispositif de pompage volumétrique comportant un organe de pompage (1) associé à un organe de distribu- tion (3) comportant un corps (10) contenant une chambre de distribution (11) comprenant des orifices de liaison1. Volumetric pumping device comprising a pumping member (1) associated with a dispensing member (3) comprising a body (10) containing a distribution chamber (11) comprising connecting orifices
(12, 14, 13) avec l'organe de pompage, avec un conduit d'admission (30) relié à une cuve d'alimentation (2), et avec un conduit de refoulement (32) , un élément de dis- tribution (17) étant monté mobile selon un axe longitudinal de la chambre de distribution (11) et étant actionné par un organe de commande (19) , l'orifice de liaison (14) avec le conduit d'admission et l'orifice de liaison (13) avec le conduit de refoulement étant disposés en regard l'un de l'autre coaxialement à l'axe longitudinal de la chambre de distribution de part et d'autre de l'orifice de liaison (12) avec l'organe de pompage et étant adjacents à des sièges (34, 33), caractérisé en ce que les sièges sont tournés vers 1 ' intérieur de la chambre de distribution et l'élément de distribution (17) a des extrémités configurées pour former des clapets (16, 15) adaptés à venir en appui étanche sur l'un ou l'autre des sièges sous l'action de l'organe de commande de l'élément de distribution. (12, 14, 13) with the pumping member, with an inlet duct (30) connected to a feed tank (2), and with a delivery duct (32), a delivery element (17) being movably mounted along a longitudinal axis of the distribution chamber (11) and being actuated by a control member (19), the connecting orifice (14) with the intake duct and the connecting orifice (13) with the delivery duct being arranged facing each other coaxially with the longitudinal axis of the distribution chamber on either side of the connection orifice (12) with the pumping and being adjacent to seats (34, 33), characterized in that the seats are facing towards the inside of the dispensing chamber and the dispensing element (17) has ends configured to form valves (16, 15) adapted to bear tightly on one or other of the seats under the action of the control element of the distribution element .
2. Dispositif de pompage selon la revendication2. Pumping device according to the claim
1, caractérisé en ce que l'organe de commande (19) est un organe magnétique adapté à commander un déplacement de l'élément de distribution (17) sans traversée de paroi.1, characterized in that the control member (19) is a magnetic member adapted to control a displacement of the distribution element (17) without wall penetration.
3. Dispositif de pompage selon la revendication 1, caractérisé en ce que l'organe de pompage (1) comprend une chambre de pompage cylindrique (5) dans laquelle est monté un piston (6) sans joint relié à un organe d'ac- tionnement (8) pour déplacer le piston selon une direction axiale de la chambre de pompage, et en ce qu'à une extrémité opposée à l'orifice de liaison (12) de la cham- bre de distribution avec la chambre de pompage, la chambre de pompage est reliée à la cuve d'alimentation (2), le piston (6) étant monté dans la chambre de pompage avec un jeu suffisamment faible pour qu'un produit contenu dans la cuve d'alimentation (2) ne s'écoule pas autour du piston.3. Pumping device according to claim 1, characterized in that the pumping member (1) comprises a cylindrical pumping chamber (5) in which is mounted a piston (6) without a seal connected to an actuator member. tion (8) for moving the piston in an axial direction of the pumping chamber, and that at an end opposite the connecting orifice (12) of the chamber, with the pumping chamber, the pumping chamber is connected to the feed tank (2), the piston (6) being mounted in the pumping chamber with a sufficiently low clearance for a product contained in the feed tank (2) does not flow around the piston.
4. Dispositif de pompage selon la revendication4. Pumping device according to claim
3, caractérisé en ce qu'entre la chambre de pompage et la cuve d'alimentation (2), l'organe de pompage comporte une chambre auxiliaire (9) ayant une dimension transversale (D) supérieure à une dimension transversale (d) de la chambre de pompage .3, characterized in that between the pumping chamber and the feed tank (2), the pumping member comprises an auxiliary chamber (9) having a transverse dimension (D) greater than a transverse dimension (d) of the pumping chamber.
5. Dispositif de pompage selon la revendication5. Pumping device according to the claim
4, caractérisé en ce que' la chambre auxiliaire (9) est coaxiale à la chambre de pompage (5) et débouche dans la cuve d'alimentation (2).4, characterized in that 'the auxiliary chamber (9) is coaxial with the pumping chamber (5) and opens into the supply vessel (2).
6. Dispositif de pompage selon la revendication6. Pumping device according to claim
5, caractérisé en ce que l'organe d ' actionnement (8) a une course suffisante pour amener le piston (6) dans une position pour laquelle le piston est en retrait dans la chambre auxiliaire d'une façon suffisante pour permettre un écoulement de produit autour du piston jusque dans la chambre de pompage .5, characterized in that the actuating member (8) has a sufficient travel to bring the piston (6) into a position for which the piston is recessed in the auxiliary chamber in a manner sufficient to allow a flow of produced around the piston into the pumping chamber.
7. Dispositif de pompage selon la revendication 6, caractérisé en ce que le conduit d'admission (30) débouche dans la chambre auxiliaire (9) . 7. A pumping device according to claim 6, characterized in that the intake duct (30) opens into the auxiliary chamber (9).
EP06841812A 2005-11-24 2006-11-20 Positive displacement pumping device comprising a joint-free dispensing member Not-in-force EP1952021B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200630385T SI1952021T1 (en) 2005-11-24 2006-11-20 Positive displacement pumping device comprising a joint-free dispensing member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0511893A FR2893679A1 (en) 2005-11-24 2005-11-24 VOLUMETRIC PUMPING DEVICE COMPRISING A DISTRIBUTION MEMBER WITHOUT JOINT
PCT/FR2006/002540 WO2007060312A1 (en) 2005-11-24 2006-11-20 Positive displacement pumping device comprising a gasket-free dispensing member

Publications (2)

Publication Number Publication Date
EP1952021A1 true EP1952021A1 (en) 2008-08-06
EP1952021B1 EP1952021B1 (en) 2009-05-27

Family

ID=36717081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06841812A Not-in-force EP1952021B1 (en) 2005-11-24 2006-11-20 Positive displacement pumping device comprising a joint-free dispensing member

Country Status (13)

Country Link
US (1) US20070116587A1 (en)
EP (1) EP1952021B1 (en)
JP (1) JP2009516805A (en)
CN (1) CN101317008A (en)
AT (1) ATE432416T1 (en)
BR (1) BRPI0618811B1 (en)
CA (1) CA2632199C (en)
DE (1) DE602006007033D1 (en)
DK (1) DK1952021T3 (en)
ES (1) ES2325794T3 (en)
FR (1) FR2893679A1 (en)
SI (1) SI1952021T1 (en)
WO (1) WO2007060312A1 (en)

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Publication number Priority date Publication date Assignee Title
JP6130211B2 (en) * 2013-05-17 2017-05-17 旭サナック株式会社 Syringe pump

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Also Published As

Publication number Publication date
FR2893679A1 (en) 2007-05-25
DK1952021T3 (en) 2009-08-03
BRPI0618811A2 (en) 2011-09-13
EP1952021B1 (en) 2009-05-27
DE602006007033D1 (en) 2009-07-09
SI1952021T1 (en) 2009-10-31
BRPI0618811B1 (en) 2018-06-12
JP2009516805A (en) 2009-04-23
CA2632199A1 (en) 2007-05-31
CN101317008A (en) 2008-12-03
ATE432416T1 (en) 2009-06-15
US20070116587A1 (en) 2007-05-24
WO2007060312A1 (en) 2007-05-31
ES2325794T3 (en) 2009-09-17
CA2632199C (en) 2011-08-09

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