EP4328448A2 - Pompe à membrane - Google Patents

Pompe à membrane Download PDF

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Publication number
EP4328448A2
EP4328448A2 EP23214388.3A EP23214388A EP4328448A2 EP 4328448 A2 EP4328448 A2 EP 4328448A2 EP 23214388 A EP23214388 A EP 23214388A EP 4328448 A2 EP4328448 A2 EP 4328448A2
Authority
EP
European Patent Office
Prior art keywords
pump
chamber
outlet
inlet
valve
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
EP23214388.3A
Other languages
German (de)
English (en)
Other versions
EP4328448B1 (fr
EP4328448A3 (fr
Inventor
Simon NETTESHEIM
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.)
PSG Germany GmbH
Original Assignee
PSG Germany GmbH
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 PSG Germany GmbH filed Critical PSG Germany GmbH
Priority to EP25184767.9A priority Critical patent/EP4644697A1/fr
Publication of EP4328448A2 publication Critical patent/EP4328448A2/fr
Publication of EP4328448A3 publication Critical patent/EP4328448A3/fr
Application granted granted Critical
Publication of EP4328448B1 publication Critical patent/EP4328448B1/fr
Active 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • F04B53/1047—Flap valves the valve being formed by one or more flexible elements
    • 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
    • F04B43/026—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 each plate-like pumping flexible member working in its own 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
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • F04B53/1047—Flap valves the valve being formed by one or more flexible elements
    • F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • F04B53/1047—Flap valves the valve being formed by one or more flexible elements
    • F04B53/106—Flap valves the valve being formed by one or more flexible elements the valve being a membrane
    • F04B53/1065—Flap valves the valve being formed by one or more flexible elements the valve being a membrane fixed at its centre

Definitions

  • the invention relates to a diaphragm pump with a pump chamber, the pump chamber being connected to an inlet chamber via an inlet valve and to an outlet chamber via an outlet valve.
  • the invention also relates to a device for conveying fluids with a membrane pump.
  • Diaphragm pumps which have a pump head essentially connected to a drive.
  • the pump head has several, for example four, pump chambers, each of which is sealed from a drive chamber by means of a pump membrane.
  • the respective pump membrane is connected via an assigned pump element to a swash plate arranged in the drive chamber.
  • a wobbling movement of the swash plate sets the pump membrane into a wobbling, axially periodic pumping movement.
  • the swashplate sits on a drive pin of a drive shaft connected to the drive.
  • the drive pin is inclined relative to the longitudinal axis of the drive shaft and is connected to the swashplate via a ball bearing.
  • an outlet chamber is arranged centrally and an inlet chamber is arranged concentrically to the outlet chamber around the outlet chamber.
  • a membrane pump with at least one pump chamber is known.
  • the pump chamber is connected to an inlet chamber via an inlet valve and to an outlet chamber via an outlet valve, the inlet valve having an inlet opening which can be closed by an inlet valve body and the outlet valve having an outlet opening which can be closed by an outlet valve body.
  • the outlet opening surrounds the inlet opening or the inlet opening surrounds the outlet opening.
  • Diaphragm pumps are used in particular in areas of chemistry, pharmacy and biotechnology in which the pumped medium is sometimes very expensive, so it is desirable that after the pumping process, if possible, no or only a small residual volume of the pumped medium remains in the diaphragm pump. Furthermore, completely filling such diaphragm pumps with the fluid without air inclusions is advantageous for the delivery performance.
  • the object of the present invention is therefore to improve the known membrane pumps with regard to the residual emptying and/or venting of the pump chambers, with a simple structure and/or a simple design being sought.
  • the invention is based on the basic idea of choosing the positioning of two outlet valves in the pump chamber and one inlet valve in the pump chamber more effectively in order to improve the residual emptying and/or venting of the pump chamber, but also to make the structure simpler.
  • the invention has recognized for the first time that the provision of two exhaust valves, which are provided in addition to the inlet valve, can lead to a simpler structure if the two exhaust valves and the inlet valve are arranged in the corners of an arbitrary triangle. It was previously assumed that a direct spatial relationship between outlet openings and inlet openings was necessary, for example in that the inlet opening should be surrounded by the outlet opening.
  • the invention has, among other things, broken the prejudice that an offset arrangement of the outlet valves relative to the inlet valve does not enable an improvement of the diaphragm pump.
  • the invention is primarily based on an essentially special arrangement of inlet valve and two outlet valves of a pump chamber, by means of which the remaining amount of medium pumped and also the air remaining in the pump chamber can be reduced after the pumping process has ended and even complete emptying is possible.
  • One of the outlet valves can be related to the direction of gravitational acceleration in the upper area of the pump chamber and that other outlet valves can be arranged in the lower area of the pump chamber in relation to the direction of gravitational acceleration.
  • the inlet valve is arranged offset from the outlet valves of a respective pump chamber, so that an advantageous placement of the outlet valves can be achieved.
  • the inlet valve can be arranged next to or to the side of the lower of the two outlet valves.
  • the diaphragm pump has at least one pump chamber, the pump chamber being connected to an inlet chamber via an inlet valve and to an outlet chamber via two outlet valves.
  • the inlet valve has an inlet opening that can be closed by an inlet valve body.
  • Each outlet valve has an outlet opening that can be closed by an outlet valve body.
  • Two outlet valves are provided for the pump chamber and the two outlet valves and the inlet valve form a triangle in a projection onto a projection plane transverse to the longitudinal axis of the pump chamber. The offset arrangement of the inlet valve and the two outlet valves enables optimal placement of the pump chamber.
  • an outlet valve can be arranged in the lower region and another outlet valve in the upper region of the pump chamber, regardless of the arrangement of the inlet valve in the pump chamber.
  • the inlet valve can be arranged in the lower region of the pump chamber.
  • the inlet valve can be arranged closer to a central axis of the diaphragm pump than the outlet valves. The arrangement of the two outlet valves and the inlet valve enables a simple construction of the diaphragm pump.
  • central axis or central axis of the diaphragm pump includes an axis that extends essentially transversely to the front panel, to the valve plate and / or to the end plate (the central axis or central axis can be essentially parallel to the normal of the Front plate, the valve plate and / or end plate extend) and can be arranged essentially centrally to one of the plates.
  • the central axis or central axis can run centrally through an inlet, which is arranged in particular centrally, in particular in a front panel.
  • the term “longitudinal axis” of the pump chamber includes an axis which runs in particular transversely to the valve plate (essentially parallel to the normal of the valve plate).
  • the longitudinal axis is arranged essentially centrally to the pump chamber, in particular essentially centrally to the pump membrane.
  • the longitudinal axis of the pump chamber runs essentially parallel to the central axis or central axis of the membrane pump.
  • the diaphragm pump has at least one pump chamber, the pump chamber being connected to an inlet chamber via an inlet valve and to an outlet chamber via two outlet valves.
  • the inlet valve has an inlet opening that can be closed by an inlet valve body and each outlet valve has an outlet opening that can be closed by an outlet valve body.
  • Two outlet valves are provided for the pump chamber.
  • a projection of straight connecting lines, each of which connects adjacent outlet valves, onto a projection plane transverse to the longitudinal axis of the pump chamber is free of intersections with inlet valves.
  • outlet valves are arranged in relation to the inlet valve in such a way that an arrangement of the outlet valves in relation to the inlet valve results, which, in addition to the desired residual emptying, the venting of the pump chamber and the delivery stability as well as the pump performance, is simple Structure with regard to the inlet chamber or outlet chamber fluidly connected to the inlet valves and the outlet valves can be achieved by combining the inlet valves in a common inlet chamber and / or the outlet valves in a common outlet chamber.
  • the diaphragm pump has at least two pump chambers, each pump chamber being connected to a respective inlet chamber via a respective inlet valve and to an outlet chamber via two outlet valves.
  • Each inlet valve has an inlet opening that can be closed by a respective inlet valve body and each outlet valve has an outlet opening that can be closed by a respective outlet valve body.
  • the inlet valves are arranged in a common inlet chamber.
  • the inlet chamber can be provided essentially centrally.
  • the membrane pump has a pump chamber, preferably two and particularly preferably three, four or more pump chambers.
  • This pump chamber or the plurality of pump chambers can particularly preferably be changed in volume cyclically, in particular periodically, by an external force.
  • at least one wall of the chamber volume is formed by a membrane, which is preferably made of one or more elastic material or materials, for example plastic, rubber, elastomer, silicone or an equivalent material, which in particular also includes one or more composite materials for increased stability and lifespan can include.
  • the pump chamber can be dimensioned with regard to the maximum volume of the pump chamber to be kept in such a way that this maximum volume corresponds exactly to that within a pump stroke as planned conveying fluid volume corresponds.
  • larger pump chambers are also conceivable, which can, for example, improve the flow behavior, the efficiency of the membrane pump or the production costs.
  • a valve body in the context of the description can in particular be formed by an elastic membrane, which generally at least partially opens the valve opening assigned to the valve body when there is a suitable pressure difference.
  • Metals for example, are also possible as materials for the valve body, but in particular also plastic, rubber, elastomer, silicone or an equivalent material, which in particular can also have or be formed from one or more composite materials. If there is a pressure difference in the opposite direction, the valve body closes the valve opening and/or a spring element is provided which acts on the valve body and biases it into the closed position when it is outside the closed position in which the valve body closes the valve opening.
  • a membrane is here understood to mean, in particular, a plate which mostly has elastic and/or resilient properties, whereby these elastic and/or resilient properties can also only be present in sections, for example in the edge region.
  • the membrane can be flat in sections, but in a preferred embodiment it is curved in the sections in which it seals a pump chamber, with curved section can be adapted to the stroke.
  • a valve control can control the opening and closing of the valves or influence the optimization of the pumping process.
  • the inlet valve and/or the outlet valve is a shield valve.
  • An umbrella valve is a valve in which the valve body is formed by an umbrella.
  • the mention of a number includes the provision of exactly the number of elements designated by the number, although other identical or similar elements are not excluded. If, for example, the description describes that a pump chamber has two outlet valves, the pump chamber can have exactly two, but also three, four or more outlet valves. The same applies to the inlet valve. A pump chamber can have exactly one inlet valve, two, but also three, four or more inlet valves. It is possible that pump chambers have a different number of inlet and/or outlet valves.
  • An inlet chamber within the scope of the description functions to hold the fluid to be pumped.
  • the inlet opening can be formed directly in a wall of the inlet chamber. This makes a compact design of the membrane pump possible, especially if, in a further preferred embodiment, the inlet opening opens directly into the pump chamber. It is possible for an inlet channel to be provided between the inlet chamber and the pump chamber, which connects the inlet chamber to the pump chamber. This creates the possibility of making the position of the inlet chamber within the diaphragm pump relative to the pump chamber more freely.
  • the inlet chamber is connected to the pump chamber directly via the inlet opening without the interposition of an inlet channel, so that an additional design of an inlet channel can be omitted.
  • An outlet chamber in the context of the description serves to collect and bundle the pumped fluid, in particular for forwarding it to a central outlet of the diaphragm pump, in particular in the case of several pump chambers and/or outlet valves.
  • the outlet opening can be formed directly in a wall of the outlet chamber. This makes a compact design of the diaphragm pump possible, especially if, in a further preferred embodiment, the outlet opening opens directly into the pump chamber. It is possible for an outlet channel to be provided between the outlet chamber and the pump chamber, which connects the outlet chamber to the pump chamber. This creates the possibility of changing the location of the outlet chamber within the To make the diaphragm pump freer relative to the pump chamber.
  • the outlet chamber is connected to the pump chamber directly via the outlet opening without the interposition of an outlet channel, which can simplify the construction of the membrane pump.
  • an outlet valve is arranged in an edge region of the pump chamber and an outlet valve in the opposite edge region of the pump chamber. This allows the outlet valves to be positioned effectively to achieve improved residual fluid drainage and ventilation.
  • One of the edge areas can be an “upper area” of the pumping chamber and the other of the edge areas can be a “lower area” of the pumping chamber.
  • the terms “upper region” and “lower region” include two regions of the pump chamber which are present in opposite edge regions of the pump chamber.
  • the term “upper region” includes the placement of the outlet valve functionally such that at least one outlet opening is provided, which is arranged as close as possible to the upper edge of the pump chamber.
  • the direction “top” or “upper” refers to the direction of gravitational acceleration when the diaphragm pump is installed and in the operating position.
  • the direction specification "upper” area describes an edge area of the pump chamber that is further apart from the “lower area” in the direction of gravitational acceleration.
  • the arrangement of the outlet valves in the upper and lower region includes positioning such that one or more outlet openings assigned to the outlet valve are arranged in the upper or lower edge region of the pump chamber.
  • the inlet valve is arranged closer to the central axis of the diaphragm pump than the two outlet valves.
  • the inlet chamber can be arranged centrally and surrounded by the outlet chamber, which means that the outlet chamber can be arranged below the inlet chamber in relation to the direction of gravitational acceleration, whereby the residual emptying of the entire diaphragm pump can be further improved.
  • two outlet valves offset from one another with respect to a vertical are provided for the pump chamber.
  • variability in the arrangement of the outlet valve and inlet valve can be achieved, which, in addition to having a beneficial effect on residual emptying, venting, and delivery stability, also has an effect on the pump performance, but also leads to a simpler design of the diaphragm pump.
  • a vertical describes a line that runs transversely to the central axis of the diaphragm pump or transversely to the longitudinal axis of the pump chamber; in particular, the vertical can be parallel to the Axis of gravitational acceleration, whereby the diaphragm pump is viewed in the installed and operational state.
  • the inlet valve of the pump chamber is arranged off-center in the cross section of the pump chamber. This makes it possible to offset the inlet valve, which can create the most free choice possible in the arrangement of the two outlet valves.
  • the inlet valve can be moved into an area of the pump chamber so that the outlet valves can be positioned in an improved manner and at the same time a connection of the pump chamber by means of the outlet valves and the inlet valve to the inlet chamber and the outlet chamber is also improved.
  • off-center includes a position indication that essentially corresponds to the center of the cross-section and/or the center of gravity of the cross-section, being viewed along the longitudinal axis of the diaphragm pump, in this respect it is described that the inlet valve is not lies on an axis through the center of the cross section or on an axis through the center of gravity of the cross section.
  • the outlet valves are arranged in a circle or in the shape of a segment of a circle.
  • the outlet valves can be arranged essentially circularly or in the shape of a segment of a circle on a valve plate, which simplifies the production of the diaphragm pump.
  • the outlet valves are arranged in a circle or in the shape of a segment of a circle around a central axis of the diaphragm pump.
  • the circular or circular segment-shaped arrangement of the outlet valves can lead to a reduced effort to form an outlet chamber. Due to a circular (segment)-shaped design, the outlet chamber can have rotation invariance.
  • the diaphragm pump has more than one pump chamber, the arrangement of the inlet valve and the two outlet valves of the pump chambers essentially having rotation invariance with respect to an angle of less than 360° about the central axis of the diaphragm pump. If several pump chambers are used, rotation invariance can be created, which, in addition to a simple structure or construction, enables easy handling or simple assembly of the membrane pump. For example, it can be provided that a rotation invariance of 360°/number of pump chambers can be achieved.
  • an outlet chamber is provided which is annular.
  • the outlet chamber can surround the inlet chamber and the sealing of the outlet chamber can be limited to, if possible, only one chamber.
  • a common outlet chamber and a common inlet chamber can be provided, with the outlet chamber surrounding the inlet chamber and no area of the outlet chamber being arranged between two inlet chambers.
  • the shape of the outlet chamber and/or inlet chamber may be a simple shape.
  • the cross section of the pump chamber has at least one straight section on a side wall.
  • a completely curved side wall in the upper or lower area provides immediate positioning arrangements for the outlet valves by positioning one inlet valve at the highest point and the other outlet valve at the lowest point of the pump chamber; This is where the air catches or the fluid flows, but venting or residual emptying can also be achieved in straight sections.
  • an enlargement of the pump chamber can also be achieved by providing straight sections of the side wall, in particular in the upper and / or lower area.
  • pump chambers are provided and the pump chambers are arranged in a grid of columns and rows.
  • the pump chambers can also be designed at different levels. Due to the grid-shaped arrangement of the pump chambers essentially above and below one another, an arrangement can be created in which the inlet valve can be offset from a central area in order to be able to effectively position the two outlet valves.
  • the invention also provides a device for conveying fluids with a membrane pump described in the description and/or the claims, wherein a pump head with a drive chamber and a drive is provided and the pump chamber is sealed from the drive chamber by means of a pump membrane. If two or more pump chambers are provided, the pump chambers can each be sealed from the drive chamber by means of a pump membrane. In a preferred embodiment, the pump membrane can be set into a periodic axial pumping movement via an assigned pump element.
  • exhaust opening not only describes a single opening, but is also used to represent a sum of Individual openings are used that are separated from each other.
  • the outlet opening is segmented into a plurality of opening sections, which are spaced apart from one another with respect to the projection plane transversely to the longitudinal axis of the pump chamber.
  • the outlet opening sections of an exhaust valve can preferably be circular or in the shape of a segment of a circle.
  • the outlet opening sections belong to an outlet valve in that the outlet opening sections are closed by a common valve body.
  • the outlet opening or the outlet opening sections can extend in a direction such that the extent of the outlet opening or the area in which the outlet opening sections of an outlet valve are present essentially corresponds to 1/5 to 1/3 of the width and / or height of the pump chamber . This allows a high pump throughput to be achieved.
  • the term “inlet opening” does not only encompass a single opening, but the inlet opening can be formed by inlet opening sections that are delimited from one another.
  • the inlet opening is segmented into a plurality of inlet opening sections, which are spaced apart from one another with respect to the projection plane transversely to the longitudinal axis of the pump chamber.
  • the inlet opening sections can preferably be arranged in a circular or circular segment shape in a projection plane transverse to the longitudinal axis of the pump chamber.
  • the inlet opening sections belong to an inlet valve in that the inlet opening sections are closed by a common valve body.
  • the inlet chamber has a wall at its lower end in the vertical direction, which is designed such that the wall is essentially flush with the lower part of the inlet opening of at least one inlet valve.
  • one or more lowest-lying inlet valves merge with their respective lower region of their respective inlet opening into the wall of the inlet chamber in such a way that the inlet chamber can empty completely via the inlet valves and remaining fluid is conveyed from the inlet into the outlet chamber during the pumping process.
  • the outlet chamber has a wall on its lower region in the vertical direction, which is designed such that the wall is essentially flush with the lower part of the outlet opening of at least one outlet valve.
  • one or more lowest-lying outlet valves merge into the wall of the outlet chamber with their respective lower region of their respective outlet opening in such a way that the The outlet chamber can be completely emptied via the outlet valves and the remaining fluid is pumped out of the diaphragm pump by the outlet chamber during the pumping process.
  • outlet valves of the diaphragm pump are designed in the same way and particularly preferably have the same shape of outlet opening and/or the same shape of the valve body.
  • inlet valves of the diaphragm pump are designed to be similar to one another and particularly preferably have the same shape of the inlet opening and/or the same shape of the valve body.
  • an inlet valve plate is provided in or on which the inlet valves are arranged spatially separated.
  • the membrane pump has four pump chambers.
  • the inlet valve plate has four spatially separated inlet valves.
  • the inlet valve plate has four spatially separated inlet valves that are arranged in a ring.
  • an outlet valve plate is provided in or on which the outlet valves are arranged spatially separated.
  • the membrane pump has four pump chambers.
  • the outlet valve plate has eight spatially separated outlet valves.
  • the outlet valve plate has eight spatially separated outlet valves that are arranged in a ring.
  • a valve plate is provided in or on which both the inlet valves and the outlet valves are designed.
  • a front plate also referred to as a pump housing, and a valve plate are provided.
  • the valve plate can be arranged between the front plate on one side and a membrane support part carrying the pump membrane, for example a membrane housing cover, on the other side.
  • the inlet chamber(s) can be at least partially formed in the front panel. By abutting the front panel and the valve plate, the inlet chamber(s) is/are formed by recesses formed in the front panel being covered on the back by the valve plate.
  • the outlet chamber can be at least partially formed in the front panel. Through the installation of the front panel and valve plate The outlet chamber or the outlet chambers are formed by covering recesses formed in the front panel on the back of the valve plate.
  • the inlet valve or the inlet valves and the outlet valves can be arranged on the valve plate.
  • the pump chamber or pump chambers can be at least partially formed in the valve plate.
  • the valve plate can be essentially flat.
  • An edge-side profiling, in particular to interact with a corresponding profiling on the front panel, can be provided.
  • Fig. 1 shows the pump head 2 of a membrane pump 1.
  • the membrane pump 1 forms part of a device for conveying a fluid.
  • the pump head 2 has a front plate 3, which can also be referred to as a chamber housing, a valve plate 4 and an end plate 5, which can also be referred to as a membrane carrier, with pump membranes 6, which have pump elements with an in Fig. 2 swashplate, not shown, are connected.
  • the valve plate 4 is arranged between the front plate 3 and the end plate 5.
  • the valve plate 4 has four pump chambers 12 on its rear side 11 facing the end plate 5.
  • the pump chambers 12, which are open towards the end plate 5, are each closed or limited by a pump membrane 6.
  • the pump membranes 6 are arranged between the end plate 5 and the valve plate 4.
  • a ring-shaped bead 13 of the pump membrane 6 in this embodiment is arranged in a groove 14 of the valve plate 4 arranged around the pump chamber 12.
  • the valve plate 4 closes the inlet chamber 8 of the front panel 3 and the outlet chamber 10 of the front panel 3.
  • the valve plate 4 has four inlet valves 15, which are designed as umbrella valves.
  • the inlet chamber 8 is connected to the pump chamber 12 via an inlet opening 16 assigned to the inlet valve 15.
  • the inlet opening 16 is segmented and has a plurality of inlet opening sections 16a.
  • the valve plate 4 seals the annular outlet chamber 10 of the front panel 3.
  • the valve plate 4 is essentially flat and has eight outlet valves 17 corresponding to the outlet chamber 10, which are also designed as umbrella valves.
  • the outlet opening 18 of the exhaust valve 17 is formed by outlet opening sections 19.
  • An inlet valve 15 is provided for each pump chamber 12.
  • Each pump chamber 12 has two outlet valves 17.
  • the two outlet valves 17 and the inlet valve 15 form a triangle in a projection onto a projection plane transverse to the longitudinal axis L of the pump chamber 12, which runs essentially parallel to a central axis M of the diaphragm pump 1, as shown in Fig. 3 is shown.
  • Fig. 3 It can also be seen that adjacent outlet valves 17 on the valve plate 4 can be connected with straight connecting lines and a projection of these onto a projection plane transverse to the longitudinal axis L of the pump chamber 12 has no intersection with the inlet valves 15.
  • the two outlet valves 17 of a pump chamber are arranged in opposite edge regions of the pump chamber 12.
  • One of the two outlet valves 17 is arranged in an upper region of the pump chamber 12, while the other of the two outlet valves 17 is arranged in a lower region of the pump chamber 12.
  • the pump chamber 12 can be vented using the upper of the two outlet valves 17. Residual emptying is possible using the lower of the two outlet valves 17.
  • the inlet valve 15 of a pump chamber 12 is laterally offset from one of the two outlet valves 17.
  • the inlet valves 15 are arranged closer to the central axis M of the diaphragm pump 1 than the outlet valves 17 of the pump chambers 12.
  • the two outlet valves 17 of a pump chamber 12 are arranged offset from one another with respect to a vertical that runs essentially along the section AA or parallel to it.
  • the inlet valve 15 is arranged off-center with respect to the cross section of the pump chamber 12.
  • the outlet valves 17 of the membrane pump 1 are arranged in a circle around the central axis M of the membrane pump 1.
  • valve plate 4 With regard to the valve plate 4, there is a rotation invariance of 90° about the central axis M of the membrane pump 1.
  • Fig. 3 can also be seen, the four pump chambers 12 are arranged in a grid of columns and rows, with the pump chambers 12 being arranged one above and next to one another.
  • the Fig. 4 is a opposite of the Fig. 3 Differently designed cross section of the pump chambers 12 for a further exemplary embodiment of the diaphragm pump 1 can be seen. Except for the cross section of the pump chambers 12, the embodiments are otherwise the same and correspond to one another, so that there is no need for repetition here.
  • the cross section of the pump chamber 12 in Fig. 4 The illustrated embodiment has straight sections 20 on the side wall of the pump chamber 12, which has an intersection with the vertical and / or horizontal of a cross section of the pump chamber 12.
  • Swashplate 21 shown is connected to a pin 23 of a drive shaft 24 via a ball bearing 22.
  • the pin 23 is inclined relative to the longitudinal axis 25 of the drive shaft 24 in order to produce a tumbling movement of the swash plate 21.
  • the connection between the drive axle and the swash plate 21 is arranged in the area of a drive chamber 26 in front of the end plate 5.
  • the inlet chamber 8 is sealed from the outlet chamber 10 by a seal 27, which in the example is designed as a cord ring seal.
  • the outer boundary of the outlet chamber 10 is sealed by a seal 28, which in the example is also designed as a cord ring seal.
  • the swashplate 21 By rotating the drive shaft 24 about its longitudinal axis 25, the swashplate 21 is set into a rotating wobbling movement due to the inclination of the pin 23 without rotating with the drive shaft 24. Due to the wobbling movement of the swash plate 21, the pump membranes 6 are set into a periodic axial pumping movement, through which negative pressure is generated in the pump chambers 12 alternately in the suction cycle by the movement in the direction of the drive chamber 26 and in the discharge cycle by a movement in the direction of the front panel 3 overpressure.
  • the inlet valve 15 Due to the downstream arrangement of the valve shield of the inlet valve 15, the inlet valve 15 opens and the corresponding outlet valve 17 closes automatically when there is negative pressure in the associated pump chamber 12. If there is excess pressure in the pump chamber 12, the associated inlet valve 15 closes and the corresponding outlet valve 17 opens automatically. As a result, the pump medium is conveyed out of the pump chamber 12 through the outlet chamber 10 to the outlet 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP23214388.3A 2018-10-11 2019-10-09 Pompe à membrane Active EP4328448B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP25184767.9A EP4644697A1 (fr) 2018-10-11 2019-10-09 Pompe à membrane

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018008036.7A DE102018008036A1 (de) 2018-10-11 2018-10-11 Membranpumpe
PCT/EP2019/077346 WO2020074576A1 (fr) 2018-10-11 2019-10-09 Pompe à membrane
EP19789888.5A EP3864291B1 (fr) 2018-10-11 2019-10-09 Pompe à membrane

Related Parent Applications (1)

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EP19789888.5A Division EP3864291B1 (fr) 2018-10-11 2019-10-09 Pompe à membrane

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP25184767.9A Division EP4644697A1 (fr) 2018-10-11 2019-10-09 Pompe à membrane

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EP4328448A2 true EP4328448A2 (fr) 2024-02-28
EP4328448A3 EP4328448A3 (fr) 2024-04-17
EP4328448B1 EP4328448B1 (fr) 2025-06-25

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EP25184767.9A Pending EP4644697A1 (fr) 2018-10-11 2019-10-09 Pompe à membrane
EP23214388.3A Active EP4328448B1 (fr) 2018-10-11 2019-10-09 Pompe à membrane
EP19789888.5A Active EP3864291B1 (fr) 2018-10-11 2019-10-09 Pompe à membrane

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EP25184767.9A Pending EP4644697A1 (fr) 2018-10-11 2019-10-09 Pompe à membrane

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US (2) US12116994B2 (fr)
EP (3) EP4644697A1 (fr)
CN (2) CN117869261A (fr)
DE (1) DE102018008036A1 (fr)
ES (2) ES2973076T3 (fr)
WO (1) WO2020074576A1 (fr)

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WO2025254840A1 (fr) * 2024-06-07 2025-12-11 Wanner Engineering, Inc. Ensemble de clapets pour une pompe à membrane
CN119878505A (zh) * 2025-03-31 2025-04-25 上海固思流体设备有限公司 一种可全排空的四柱塞隔膜泵

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Also Published As

Publication number Publication date
EP3864291A1 (fr) 2021-08-18
WO2020074576A1 (fr) 2020-04-16
EP3864291B1 (fr) 2023-12-06
CN117869261A (zh) 2024-04-12
DE102018008036A1 (de) 2020-04-16
EP4328448B1 (fr) 2025-06-25
CN113195895A (zh) 2021-07-30
US12116994B2 (en) 2024-10-15
US20210355934A1 (en) 2021-11-18
ES2973076T3 (es) 2024-06-18
ES3046816T3 (en) 2025-12-02
US20250003404A1 (en) 2025-01-02
EP4328448A3 (fr) 2024-04-17
EP4644697A1 (fr) 2025-11-05
EP3864291C0 (fr) 2023-12-06
CN113195895B (zh) 2023-12-29

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