EP3001035B1 - Pompe à membrane - Google Patents

Pompe à membrane Download PDF

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Publication number
EP3001035B1
EP3001035B1 EP15002679.7A EP15002679A EP3001035B1 EP 3001035 B1 EP3001035 B1 EP 3001035B1 EP 15002679 A EP15002679 A EP 15002679A EP 3001035 B1 EP3001035 B1 EP 3001035B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
diaphragm pump
pump
cell
cell wall
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.)
Active
Application number
EP15002679.7A
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German (de)
English (en)
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EP3001035A3 (fr
EP3001035A2 (fr
Inventor
Stephan Kaufmann
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.)
KNF Flodos AG
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KNF Flodos AG
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Publication date
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Publication of EP3001035A2 publication Critical patent/EP3001035A2/fr
Publication of EP3001035A3 publication Critical patent/EP3001035A3/fr
Application granted granted Critical
Publication of EP3001035B1 publication Critical patent/EP3001035B1/fr
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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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • 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
    • F04B43/0054—Special features particularities of the flexible members
    • 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
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/14—Machines, pumps, or pumping installations having flexible working members having peristaltic action having plate-like flexible members

Definitions

  • the invention relates to a diaphragm pump with a pump housing, to which a disposable cell is releasably fixable, which has a first and a second cell wall, which define a working space between them, and with a working diaphragm, which is in driving connection with an oscillating lifting drive and on its remote from the lifting drive membrane flat side with the flexible first cell wall is detachably coupled.
  • Diaphragm pumps for conveying and dosing liquids are used in a wide variety of designs. Especially in applications in the health and research area high demands are placed on such diaphragm pumps.
  • An efficient way to replace the fluid-carrying paths of a pump system in a short time while ensuring that the entire pump system is clean and possibly even sterile ready provides the use of fast-changing components, such as hoses, fittings and the fluid-carrying components the pump head of a diaphragm pump.
  • a membrane pump of the type mentioned is known in the prior art, in which the fluid-carrying components of the diaphragm pump are provided in a rapidly exchangeable disposable or disposable cell.
  • the previously known diaphragm pump has a pump housing to which the disposable cell is detachably fixable. This disposable cell has a first and a second cell wall, which define a working space between them.
  • the previously known diaphragm pump has a working diaphragm, which is in drive connection with an oscillating lifting drive. This working diaphragm can be releasably coupled on its side facing away from the lifting drive membrane flat side with the flexible first cell wall.
  • EP 0 055 467 is considered to be the closest prior art and discloses the features of the preamble of claim 1.
  • one of the objects is to provide a diaphragm pump in which the harmful volume in the dead space between working diaphragm and flexible first cell wall as low as possible or practically zero.
  • the solution of this object is in the diaphragm pump of the type mentioned in particular that at least one outlet channel is provided with a arranged within the working membrane ventmannbehinderer or backflow preventer in the working membrane for emptying the disposed between her and the first cell wall dead space.
  • the diaphragm pump according to the invention has a working diaphragm which has a reflux obstruction or backflow preventer within the at least one outlet channel arranged in the working diaphragm.
  • the working diaphragm which is separated from the fluid-carrying working space by the first cell wall of the disposable cell serving as a barrier membrane, is set into the suction stroke and the pressure stroke by the oscillating lifting drive.
  • the first cell wall of the disposable cell serving as a barrier membrane rests directly on the surface of the working membrane and conforms to the membrane surface of the working membrane.
  • the flexible first cell wall is stretched to the top dead center by the upward movement of the working diaphragm, which is why it can optimally rest against the surface of the working diaphragm due to the resulting tensile stress.
  • the air remaining in the intermediate dead space must be displaced or removed.
  • the diaphragm pump according to the invention Since in the diaphragm pump according to the invention, the check valve is not arranged outside of the diaphragm pump, but rather within the working diaphragm, the remaining between the dead space and the check valve harmful volume can be kept relatively low. Therefore, the diaphragm pump according to the invention is characterized by a high performance and a reliable operation.
  • the first cell wall is clamped between the working membrane and the second cell wall in an edge region bounding the working space.
  • the handling of the membrane pump according to the invention and the assembly and disassembly of the disposable cell assigned to it are substantially facilitated if the first and the second cell walls are fluid-tightly interconnected in an edge region bounding the working space.
  • the working diaphragm In order for the working diaphragm to be able to transfer its downward movement into the bottom dead center during the suction stroke to the first cell wall of the disposable cell, it is advantageous if the first cell wall lies flat against the bottom dead center on the working diaphragm during the downward movement of the working diaphragm.
  • the first cell wall can be releasably coupled to the working membrane by means of negative pressure.
  • the first cell wall can be detachably coupled by means of adhesion to the working membrane.
  • a further embodiment according to the invention provides that the first cell wall can be releasably coupled to the working membrane by means of prestressing, and that the first cell wall for this purpose has an inherent elasticity biasing the first cell wall in the direction of the working membrane.
  • the reflux obstruction provided in the at least one outlet channel is designed as a nozzle or as a cross-sectional constriction in the outlet channel restricted to the working membrane. While the air initially remaining in the dead space is pressed rapidly through the outlet channel during the pressure stroke of the diaphragm pump according to the invention, a re-flow of ambient air into the dead space during the suction stroke of the working diaphragm is substantially delayed.
  • a preferred development according to the invention provides that the return flow preventer provided in the at least one outlet channel is designed as a check valve which opens from a closed position against a restoring force in the open direction opposite the dead space is movable.
  • the backflow preventer has a movable between the open and the closed position valve body.
  • a particularly simple in construction and manufacturing embodiment according to the invention provides that the valve body of the non-return valve is integrally connected to the elastic material of the working diaphragm.
  • a structurally particularly simple embodiment according to the invention is that the backflow preventer is designed as a duckbill or flutter valve.
  • valve body of the backflow preventer remains due to its inertia in the downward movement of the working diaphragm to bottom dead center in its closed position and moves in the lifting movement to top dead center in the open position.
  • the restoring force acting on the valve body is applied by at least one spring-elastic or rubber-elastic restoring element or by the inherent elasticity of the valve body.
  • the at least one restoring element is designed as a compression spring.
  • a proven and particularly simple embodiment according to the invention provides that the lifting drive is designed as an eccentric drive.
  • the lifting drive is designed as a linear drive.
  • the lifting drive can be designed as an electric or hydraulic lifting drive.
  • a development according to the invention provides that the lifting movement of the lifting drive is effected in the top dead center by means of at least one lifting magnet and the downward movement of the working diaphragm in the bottom dead center by means of a spring or rubber elastic return part.
  • the lifting movement of the lifting drive is brought into the top dead center by means of a spring or rubber elastic return part and the downward movement of the working diaphragm in the bottom dead center by means of at least one solenoid.
  • An easily manageable embodiment according to the invention provides that the second cell wall is formed by at least a portion of the first cell wall facing side wall of a dimensionally stable component of the disposable cell.
  • the dimensionally stable component of the disposable cell may be formed by a one-piece or multi-part plastic block.
  • a plastic block can be produced inexpensively with relatively little effort.
  • the dimensionally stable component has two interconnected sub-elements, which passes through the pump inlet and the pump outlet and that in the parting plane of the sub-elements, the at least one inlet valve and the at least one Exhaust valve are provided.
  • the simple design and manufacture of the diaphragm pump according to the invention is favored if the at least one inlet valve and / or the at least one outlet valve is designed as a flutter valve (s).
  • At least one pulsation damper is provided in the disposable cell in the pump inlet and / or in the pump outlet.
  • a preferred embodiment according to the invention provides that the at least one pulsation damper is designed as at least one compensating diaphragm interposed in the pump inlet and / or the pump outlet.
  • a further object is, in particular, to provide a diaphragm pump which is characterized by a particularly simple handling.
  • the disposable cell having the fluid-carrying working space can be detachably fixed to the pump housing without tools by means of a tensioning device. Since the disposable cell can be fixed releasably on the pump housing without tools, the disposable cell can also be detachably fixed to the pump housing by a non-technically trained user.
  • the tensioning device has a pivoting lever, which is held pivotably on the pump housing and is movable between a release position and a holding position.
  • a pivot lever which is held pivotably on the pump housing and can be moved between a release and a holding position, is also manually operable alone.
  • the pump housing is designed to be divisible and has at least two housing parts, between which the disposable cell is releasably clamped is particularly advantageous.
  • Many applications require a high level of cleanliness and possibly even sterility, as well as a high degree of safety with regard to the threat of cross-contamination of fluids.
  • time-consuming cleaning and possibly even sterilization processes must be carried out on the pump installation before a next process step can take place. Carrying out such cleaning and sterilization processes is time-consuming and requires comprehensive system know-how. A residual uncertainty regarding possibly still unclean games remains after each cleaning process still exist.
  • the housing parts are movable by means of the clamping device between an approximated holding position and a release position spaced apart from each other.
  • a preferred embodiment according to the invention provides that a first, the lifting drive in receiving housing part and a second, designed as a cover of the diaphragm pump housing part is provided.
  • a preferred development according to the invention provides that the second housing part has a recess into which the disposable cell can be positively inserted.
  • the disposable cell protrudes into the recess, as long as an overpressure is present in the working space.
  • a preferred embodiment, in which the clamping device is securely fixed in the holding position, provides that the pivot lever of the clamping device is designed as a toggle lever.
  • the lever designed as a toggle lever is held in the holding position of the clamping device on the dead center of the toggle lever mechanism in a self-locking pivoting position.
  • the pivot lever can be additionally secured in the holding position of the clamping device when the pivot lever is movable against the restoring force of at least one spring or rubber-elastic return element of the holding position in the release position of the clamping device.
  • the pivot lever can also be particularly well secured in the holding position of the clamping device when the pivot lever is pivotable about a pivot axis which is formed as an eccentric.
  • the tensioning device is able to hold the disposable cell particularly well on the pump housing when the pivot lever is configured bow-shaped and clamped in the holding position of the clamping device with the crossbar of the bracket shape the disposable cell on the pump housing or fixed.
  • a development according to the invention of its own worth-worth protection provides that the diaphragm pump has a pump control, and that on the disposable cell, a data memory for storing specific data of the disposable cell is provided, which cooperates with a reading unit in the pump housing, which reading unit with the pump control is in control connection.
  • preferred embodiments according to the invention provide for the data memory and the reading unit to interact in a wired or wireless manner with one another.
  • FIGS. 1 to 29 different versions 101, 102, 107, 109, 116 and 123 of a diaphragm pump are shown.
  • the various embodiments 101, 102, 107, 109, 116 and 123 of the diaphragm pump have in common that they are a pump housing 1, where a disposable cell 2 is releasably fixable.
  • these disposable cells 2 can be detached from the pump housing 1 and replaced if necessary.
  • Each of the disposable cells 2 has a first and a second cell wall 3 and 4, respectively, which delimit a working space 5 between them.
  • a working diaphragm 6 is provided, which is in drive connection with an oscillating lifting drive and which is detachably couplable to the flexible first cell wall 3 on its side facing away from the lifting drive membrane flat side.
  • Each disposable cell 2 of the membrane pumps 101, 102, 107, 109, 116 and 123 has a pump inlet 7 opening into the working space 5 with at least one inlet valve 8 and a pump outlet 9 connected to the working space 5 with at least one outlet valve 10.
  • first cell wall 3 is flat on the surface of the working diaphragm 6 and clings to the membrane surface of the working diaphragm 6 at.
  • the first cell wall is stretched by the upward movement of the working diaphragm 6, which is why it is affected by the resulting tensile stress can create optimal to the membrane surface of the working diaphragm 6.
  • the air which initially remains in the dead space 11 arranged between the working membrane 6 and the first cell wall 3 can flow out through an outlet channel 12 arranged in the working membrane 6 and limited to the cross section of the working membrane 6.
  • the outlet channel 12 with a reflux obstruction or a backflow preventer 13 is provided in the working diaphragm 6.
  • a non-return valve 13 is provided, which only permits the outflow of fluid from the dead space 11, while, on the other hand, recirculation of ambient air or the like fluid into the dead space 11 is prevented.
  • the disposable cell 2 on the pump housing 1 is the flexible or elastic configured first cell wall 3 between the working diaphragm 6 and the second cell wall 4 clamped in a working space 5 bounding edge region.
  • the embodiment shown here is preferred in which the first and the second cell wall 3, 4 are fluid-tightly interconnected in the edge region bounding the working space 5.
  • outlet channel 12 By provided in the working diaphragm 6 outlet channel 12 can escape after the application of the disposable cell 2 on the pump housing 1 possibly in the dead space 11 remaining air, while a re-flow of air into the dead space 11 simultaneously prevented or at least delayed becomes. Between the working diaphragm 6 and the first cell wall 3, this creates a negative pressure which couples the working diaphragm 6 and the first cell wall 3 together and holds them together in a planar manner. Thanks to the negative pressure generated thereby, the first cell wall 3 of the disposable cell 2 remains at the working diaphragm 6 during the suction stroke. In order to generate the required negative pressure in the dead space 11 between the working membrane 6 and the first cell wall 3, an additional vacuum pump or an active external vacuum generation is not absolutely necessary.
  • the first cell wall 3 Since the first cell wall 3 rests flat against the working diaphragm 6 during the downward movement of the working diaphragm 6 toward the bottom dead center, the first cell wall 3 can here be detachably coupled, preferably by means of negative pressure or by means of adhesion to the working diaphragm 6.
  • the diaphragm pump provided in the at least one outlet 12 backflow preventer 13 is designed as a check valve that from a closed position against a restoring force in the dead space 11 opposite direction opening open position movable is.
  • the designed as a check valve backflow preventer 13 has a movable between the open and the closed position valve body.
  • this check valve is designed as a ball valve and the valve body as a valve ball 14.
  • the force acting on the valve body restoring force is applied here by at least one resilient return element.
  • the restoring element is designed here as a compression spring 15.
  • the check valve is designed as duckbill or duckbill valve, wherein the duckbill valve body 16 may be integrally connected to the elastic material of the working diaphragm 6.
  • the diaphragm pumps 101, 102, 109, 116 and 123 have a check valve, which is designed as a flutter valve 17.
  • the valve body of this in the FIGS. 1 to 5 flutter valve 17 shown only by way of example could for example also be integrally connected to the elastic material of the working diaphragm 6.
  • the valve body of these flutter valves 17 is produced from an originally separate strip of material.
  • the lifting drive of the diaphragm pumps 101, 107, 109 and 123 is designed as an oscillating linear drive 18.
  • This designed as a linear actuator 18 lifting drive could be designed as an electric or hydraulic lifting drive.
  • the lifting movement of the lifting drive is effected in the top dead center by means of at least one solenoid and the downward movement of the working diaphragm 6 in the bottom dead center by means of a spring or rubber elastic return part.
  • an embodiment is preferred in which the lifting movement of the lifting drive is brought into the top dead center by means of a spring or rubber elastic return part and the downward movement of the working diaphragm 6 in the bottom dead center by means of a solenoid.
  • the lifting drive of the diaphragm pump 102 is designed as an eccentric drive 19.
  • This eccentric drive 19 has a connecting rod 20 articulated to the working diaphragm 6 on, with its working diaphragm 6 facing away from the connecting rod end is rotatably mounted on an eccentric 21 such that the rotational movement of the eccentric 21 is converted into an oscillating linear movement of the working diaphragm 6.
  • the second cell wall 4 is formed by a portion of the first cell wall 3 facing side wall of a dimensionally stable and formed here by a single or multi-part plastic block component of the disposable cell 2.
  • This dimensionally stable component has here two interconnected sub-elements 22, 23, which passes through the pump inlet 7 and the pump outlet 9, wherein in the parting plane of the sub-elements 22, 23, the at least one inlet valve 8 and the at least one outlet valve 10 are provided. It can be seen in the figures that the at least one inlet valve 8 and the at least one outlet valve 10 are likewise designed here as flutter valves.
  • At least one pulsation damper is provided in the disposable cell 2 in the pump inlet 7 and / or in the pump outlet 9 .
  • This pulsation damper can be designed as at least one compensating diaphragm interposed in the pump inlet 7 and / or the pump outlet 9.
  • the disposable cell 2 by means of a clamping device without tools on the pump housing 1 is releasably fixed.
  • Different versions 209, 216 and 223 of such a tensioning device are shown.
  • the tensioning device 209, 216, 223 have a manually operable pivoting wing 24, which is held pivotably on the pump housing 1 and between a release position and a Craig ein is movable.
  • the pump housing 1 is configured divisible and has at least two housing parts 25, 26, between which the disposable cell 2 is releasably clamped.
  • the housing parts 25, 26 are movable by means of the clamping device between an approximated holding position and a release position spaced apart from each other.
  • the second housing part 26 is designed as a lid.
  • a recess 27 is provided, in which the disposable cell 2 can be positively inserted.
  • the disposable cell 2 protrudes into the recess 27 as long as there is an overpressure in the working space 5.
  • Positioning aids are provided between the first housing part 25 and the disposable cell 2, which secure a fixed relative position between the first housing part 25 and the disposable cell 2. These positioning aids may be formed by positioning pins 28 which project on the first housing part 25 or on the disposable cell 2 and project into positioning recesses in the respective other component 2, 25.
  • the clamping device To insert the disposable part 2, the clamping device must be open and in its release position, in which release position, the position designation "off" on the crossbar of the bow-shaped pivot lever 24 can be seen.
  • the disposable cell 2 is placed on a Vorpositionier Chemistry 31 and inserted into the opening formed in the release position between the housing parts 25, 26 opening.
  • the second housing part 26, which serves as a cover In this release position, the second housing part 26, which serves as a cover, has sufficient distance to the first housing part 25, which contains the lifting drive, so that the disposable cell can be inserted transversely thereto.
  • the pivot lever 24 of the clamping device is pivoted from the position "off" against the position "on".
  • the pivot lever 24 is pivotable about a pivot axis 29 which is formed as an eccentric.
  • the pivot lever 24 can be moved in the clamping device 209 against the restoring force of at least one resilient return element 30 from the holding position to the release position of the clamping device 209.
  • the elastic restoring elements 30 of the tensioning device 209 which are designed as return springs, on the one hand have the task of pushing the second housing part 26 as far as possible away from the first housing part 25 receiving the lifting drive and, on the other hand, generate a specific friction moment on the eccentric pivot axis 29 that the pivot lever 24 stops in any position and does not fall due to gravity in an end position.
  • the first cell wall 3 of the disposable cell 2 serving as a blocking membrane would be pressed outwards and the disposable cell accordingly pressed into the recess 27 provided in the housing part 26.
  • This rear grip of the disposable cell 2 in the recess 27 of the second housing part 26 prevents unintentional withdrawal of the disposable cell 2 from the second housing part 26.
  • the first cell wall 3 is then still largely on the working diaphragm 6 and is thus protected from bursting. In this way, an uncontrolled disassembly of the disposable cell 2 is prevented under pressure load, which is used for safety and health and safety.
  • the pivot lever 24 In the in the FIGS. 16 to 22 shown embodiment 216 of the clamping device, the pivot lever 24 must in the in FIG 16 to 19 shown pivot position, so that the disposable cell 2 can be placed on the first housing part 25 projecting positioning pin 28.
  • the pivot lever 24 By pivoting the pivot lever 24 in the in FIG. 20 shown intermediate position, serving as a lid second housing part 26 is pushed over the disposable cell 2.
  • the clamping device 216 can press the disposable cell 2 with its first cell wall 3 on the working membrane 6, wherein the disposable cell 2 rests securely on the first housing part 25 and is fixed.
  • the in the FIGS. 23 to 29 shown clamping device 223 has a pivot lever 24 which is designed as a toggle lever.
  • the insertion of the disposable cell 2 takes place in the in the Figures 23 to 29 shown tensioning device 223 approximately as well as the tensioning device 216 according to the FIGS. 16 to 22 ,
  • the second housing part 26 remains in the intermediate position according to the FIGS. 25 to 26 on the one hand and in the holding position according to the FIGS. 27 to 29 on the other hand unchanged on the swing radius. Because in the FIGS. 27 to 29 the smaller lever arm of the toggle lever in turn is slightly above its dead center, the clamping device 223 is locked self-locking in the holding position.

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

Claims (41)

  1. Pompe à membrane (101, 102, 107, 109, 116, 123) avec un corps de pompe (1), sur lequel une cellule à usage unique (2) peut être fixée de façon séparable, qui comporte une première et une deuxième parois cellulaires (3, 4), qui (3, 4) délimitant entre elles une chambre de travail (5), et avec une membrane de travail (6), qui (6) est en liaison d'entraînement avec un entraînement de levage oscillant et qui (6) peut être couplée de façon séparable sur son côté plat de membrane détourné de l'entraînement de levage avec la première paroi cellulaire flexible (3), caractérisée en ce qu'il est prévu dans la membrane de travail (6), pour la vidange de la chambre morte (11) disposée entre elle et la première paroi de cellule (3), au moins un canal d'évacuation (12) avec un moyen antiretour ou un moyen anti-reflux.
  2. Pompe à membrane selon la revendication 1, caractérisée en ce que la première et la deuxième parois cellulaires (3, 4) sont serrées dans une région de bord entourant la chambre de travail (5).
  3. Pompe à membrane selon la revendication 1 ou 2, caractérisée en ce que la première et la deuxième parois cellulaires (3, 4) sont assemblées l'une à l'autre de façon étanche au fluide dans une région de bord entourant la chambre de travail (5).
  4. Pompe à membrane selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la première paroi cellulaire (3) s'applique à plat sur la membrane de travail (6) pendant le mouvement de descente de la membrane de travail (6) vers le point mort bas.
  5. Pompe à membrane selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la première paroi cellulaire (3) peut être couplée de façon séparable à la membrane de travail (6) au moyen d'une dépression.
  6. Pompe à membrane selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la première paroi cellulaire (3) peut être couplée de façon séparable à la membrane de travail (6) par adhérence.
  7. Pompe à membrane selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la première paroi cellulaire (3) peut être couplée de façon séparable à la membrane de travail (6) au moyen d'une précontrainte et en ce que la première paroi cellulaire (3) présente à cet effet une élasticité propre qui précontraint la première paroi de cellule (3) en direction de la membrane de travail (6).
  8. Pompe à membrane selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le moyen antiretour prévu dans ledit au moins un canal d'évacuation (12) est réalisé sous forme de buse ou sous forme d'étranglement de section transversale dans le canal d'évacuation (12).
  9. Pompe à membrane selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le moyen anti-reflux prévu dans ledit au moins un canal d'évacuation (12) est réalisé sous forme de clapet antiretour, qui est mobile d'une position de fermeture contre une force de rappel à la position d'ouverture s'ouvrant dans la direction opposée à la chambre morte (11).
  10. Pompe à membrane selon l'une quelconque des revendications 1 à 9, caractérisée en ce que le moyen anti-reflux comporte un corps de soupape mobile entre la position d'ouverture et la position de fermeture.
  11. Pompe à membrane selon l'une quelconque des revendications 1 à 10, caractérisée en ce que le corps de soupape du moyen anti-reflux est assemblé d'une seule pièce avec le matériau élastique de la membrane de travail (6).
  12. Pompe à membrane selon l'une quelconque des revendications 1 à 11, caractérisée en ce que le moyen anti-reflux est réalisé sous forme de bec de canard ou de soupape flottante.
  13. Pompe à membrane selon l'une quelconque des revendications 1 à 12, caractérisée en ce que le corps de soupape du moyen anti-reflux s'arrête dans sa position de fermeture lors du mouvement de descente de la membrane de travail (6) vers le point mort bas, en raison de son inertie massique et il se déplace dans la position d'ouverture lors du mouvement levage vers le point mort haut.
  14. Pompe à membrane selon l'une quelconque des revendications 1 à 13, caractérisée en ce que la force de rappel agissant sur le corps de soupape est appliquée par un élément de rappel élastique à ressort ou en caoutchouc ou par l'élasticité propre du corps de soupape.
  15. Pompe à membrane selon la revendication 14, caractérisée en ce que ledit au moins un élément de rappel est constitué par un ressort de pression (15).
  16. Pompe à membrane selon l'une quelconque des revendications 1 à 15, caractérisée en ce que l'entraînement de levage est constitué par un entraînement à excentrique.
  17. Pompe à membrane selon l'une quelconque des revendications 1 à 16, caractérisée en ce que l'entraînement de levage est constitué par un entraînement linéaire.
  18. Pompe à membrane selon l'une quelconque des revendications 1 à 17, caractérisée en ce que l'entraînement de levage est constitué par un entraînement de levage électrique ou hydraulique.
  19. Pompe à membrane selon l'une quelconque des revendications 1 à 17, caractérisée en ce que le mouvement de levage de l'entraînement de levage vers le point mort haut est provoqué au moyen d'au moins un aimant de levage et le mouvement de descente de la membrane de travail (6) vers le point mort bas est provoqué au moyen d'une pièce de rappel élastique à ressort ou en caoutchouc.
  20. Pompe à membrane selon l'une quelconque des revendications 1 à 17, caractérisée en ce que le mouvement de levage de l'entraînement de levage vers le point mort haut est provoqué au moyen d'une pièce de rappel élastique à ressort ou en caoutchouc et le mouvement de descente de la membrane de travail (6) vers le point mort bas est provoqué au moyen d'au moins un aimant de levage.
  21. Pompe à membrane selon l'une quelconque des revendications 1 à 20, caractérisée en ce que la deuxième paroi cellulaire (4) est formée par au moins une région partielle de la paroi latérale d'un composant de forme stable de la cellule à usage unique (2) tournée vers la première paroi cellulaire (3).
  22. Pompe à membrane selon la revendication 21, caractérisée en ce que le composant de forme stable de la cellule à usage unique (2) est formé par un bloc de matière plastique en une ou plusieurs partie(s).
  23. Pompe à membrane selon la revendication 21 ou 22, caractérisée en ce que le composant de forme stable (2) comprend des éléments partiels reliés les uns aux autres (22, 23), que l'entrée de pompe (7) et la sortie de pompe (9) traverse, et en ce que ladite au moins une soupape d'entrée (8) et ladite au moins une soupape de sortie (10) sont prévues dans le plan de séparation des éléments partiels (22, 23).
  24. Pompe à membrane selon l'une quelconque des revendications 1 à 23, caractérisée en ce que ladite au moins une soupape d'entrée (8) et/ou ladite au moins une soupape de sortie (10) est/sont constituée(s) par une/des soupape(s) flottante(s).
  25. Pompe à membrane selon l'une quelconque des revendications 1 à 24, caractérisée en ce qu'il est prévu au moins un amortisseur de pulsations dans la cellule à usage unique (2) dans l'entrée de pompe (7) et/ou dans la sortie de pompe (9).
  26. Pompe à membrane selon la revendication 25, caractérisée en ce que ledit au moins un amortisseur de pulsations est réalisé sous la forme d'au moins une membrane d'équilibrage intercalée dans l'entrée de pompe (7) et/ou dans la sortie de pompe (9).
  27. Pompe à membrane selon le préambule de la revendication 1, en particulier selon l'une quelconque des revendications 1 à 26, caractérisée en ce que la cellule à usage unique (2) peut être fixée de façon séparable sans outil au corps de pompe (1) au moyen d'un dispositif de serrage (209, 216, 223).
  28. Pompe à membrane selon la revendication 27, caractérisée en ce que le dispositif de serrage (209, 216, 223) comprend un levier pivotant (24), qui (24) est maintenu de façon pivotante sur le corps de pompe (1) et qui est déplaçable entre une position de libération et une position de maintien.
  29. Pompe à membrane selon la revendication 27 ou 28,
    caractérisée en ce que le corps de pompe (1) est réalisé sous forme séparable et comprend au moins deux parties de corps (25, 26), entre lesquelles la cellule à usage unique (2) peut être serrée de façon séparable.
  30. Pompe à membrane selon l'une quelconque des revendications 27 à 29, caractérisée en ce que les parties de corps (25, 26) sont déplaçables au moyen du dispositif de serrage (209, 216, 223) entre une position de maintien proches l'une de l'autre et une position de libération espacées l'une de l'autre.
  31. Pompe à membrane selon l'une quelconque des revendications 27 à 30, caractérisée en ce qu'il est prévu une première partie de corps (25) contenant en elle l'entraînement de levage et une deuxième partie de corps (26) réalisée en forme de couvercle de la pompe à membrane.
  32. Pompe à membrane selon l'une quelconque des revendications 27 à 31, caractérisée en ce que la deuxième partie de pompe (26) présente une découpe (27), dans laquelle la cellule à usage unique (2) peut être insérée par emboîtement.
  33. Pompe à membrane selon la revendication 32, caractérisée en ce que la cellule à usage unique (2) est saillante dans la découpe (27), aussi longtemps qu'il règne une surpression dans la chambre de travail (5).
  34. Pompe à membrane selon une revendication 27 à 33, caractérisée en ce qu'il est prévu entre la première partie de corps (25) et la cellule à usage unique (2) des auxiliaires de positionnement, qui assurent une position relative bien définie entre la première partie de corps (25) et la cellule à usage unique (2).
  35. Pompe à membrane selon l'une quelconque des revendications 27 à 34, caractérisée en ce que le levier pivotant (24) du dispositif de serrage (223) est constitué par un levier articulé.
  36. Pompe à membrane selon la revendication 35, caractérisée en ce que le levier pivotant (24) constitué par un levier articulé est maintenu dans une position de pivotement autobloquante dans la position de maintien du dispositif de serrage (223) au-delà du point mort du mécanisme à levier articulé.
  37. Pompe à membrane selon l'une quelconque des revendications 27 à 36, caractérisée en ce que le levier pivotant (24) est déplaçable de la position de maintien à la position de libération du dispositif de serrage (209, 216) contre la force de rappel d'au moins un élément de rappel élastique à ressort ou en caoutchouc (30).
  38. Pompe à membrane selon l'une quelconque des revendications 27 à 37, caractérisée en ce que le levier pivotant (24) peut pivoter autour d'un axe de pivotement (29), qui est réalisé sous forme d'excentrique.
  39. Pompe à membrane selon l'une quelconque des revendications 1 à 38, caractérisée en ce que le levier pivotant (24) est réalisé en forme d'étrier et, dans la position de maintien du dispositif de serrage (209, 216, 223), serre ou fixe la cellule à usage unique (2) sur le corps de pompe (1) au moyen de la nervure transversale de la forme d'étrier.
  40. Pompe à membrane selon l'une quelconque des revendications 1 à 39, caractérisée en ce que la pompe à membrane a une commande de pompe, et en ce qu'il est prévu sur la cellule à usage unique (2) une mémoire de données destinée à mémoriser des données spécifiques de la cellule à usage unique (2), qui coopère avec une unité de lecture dans la région du corps de pompe (1), unité de lecture qui est en liaison de commande avec la commande de pompe.
  41. Pompe à membrane selon la revendication 40, caractérisée en ce que la mémoire de données et l'unité de lecture coopèrent l'une avec l'autre par une liaison filaire ou sans fil.
EP15002679.7A 2014-09-17 2015-09-16 Pompe à membrane Active EP3001035B1 (fr)

Applications Claiming Priority (1)

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DE102014013779.1A DE102014013779A1 (de) 2014-09-17 2014-09-17 Membranpumpe

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EP3001035A2 EP3001035A2 (fr) 2016-03-30
EP3001035A3 EP3001035A3 (fr) 2016-05-18
EP3001035B1 true EP3001035B1 (fr) 2017-03-08

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI659719B (zh) * 2017-02-09 2019-05-21 瑞士商耐斯泰克公司 用於飲料製備模組之薄膜泵
US11598328B2 (en) * 2017-04-06 2023-03-07 Biosense Webster (Israel) Ltd. Disposable pump chamber for an infusion pump
DE202019106655U1 (de) 2019-11-29 2019-12-11 Schöning Gmbh Pumpenverschluss
DE102021134629B4 (de) * 2021-12-23 2024-05-29 KNF Micro AG Pumpenkopf für eine Membranpumpe

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1110137A (fr) * 1976-05-24 1981-10-06 Ingemar H. Lundquist Pompe a perfusion intraveineuse et methode de fonctionnement
ATE10670T1 (de) * 1980-12-29 1984-12-15 Lewa Herbert Ott Gmbh + Co. Membranpumpe mit druckentlastet eingespannter membran.
FR2517378B1 (fr) * 1981-11-28 1988-03-11 Becker Erich Pompe a membrane
JPS6073891U (ja) * 1983-10-28 1985-05-24 三菱電機株式会社 ダイヤフラム形ポンプ
DE3408331C2 (de) * 1984-03-07 1986-06-12 Fresenius AG, 6380 Bad Homburg Pumpanordnung für medizinische Zwecke
US4743169A (en) * 1984-08-25 1988-05-10 Aisin Seiki Kabushiki Kaisha Diaphragm-type vacuum pump device
IL83259A (en) * 1987-07-20 1992-05-25 D F Lab Ltd Disposable cell and diaphragm pump for use of same
EP1072868A1 (fr) * 1999-07-09 2001-01-31 Sawatec Ag Dispositif de dosage de liquides
US7087036B2 (en) * 2002-05-24 2006-08-08 Baxter International Inc. Fail safe system for operating medical fluid valves
US7503910B2 (en) * 2006-02-01 2009-03-17 Carmeli Adahan Suctioning system, method and kit
DE102007005736A1 (de) * 2007-01-31 2008-08-14 Gardner Denver Thomas Gmbh Verdrängungs-Pumpe zur Förderung eines Fluids mit automatischer Anpassung an die Kompressibilität dieses Fluids
US8192401B2 (en) * 2009-03-20 2012-06-05 Fresenius Medical Care Holdings, Inc. Medical fluid pump systems and related components and methods

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EP3001035A3 (fr) 2016-05-18
US20160076529A1 (en) 2016-03-17
DE102014013779A1 (de) 2016-03-17
US10260493B2 (en) 2019-04-16
EP3001035A2 (fr) 2016-03-30

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