EP3938655A1 - Dispositifs de clapet destinés à une pompe à membrane - Google Patents

Dispositifs de clapet destinés à une pompe à membrane

Info

Publication number
EP3938655A1
EP3938655A1 EP20711561.9A EP20711561A EP3938655A1 EP 3938655 A1 EP3938655 A1 EP 3938655A1 EP 20711561 A EP20711561 A EP 20711561A EP 3938655 A1 EP3938655 A1 EP 3938655A1
Authority
EP
European Patent Office
Prior art keywords
outlet
inlet
channel
valve
valve body
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.)
Pending
Application number
EP20711561.9A
Other languages
German (de)
English (en)
Inventor
Charankumar KODANDARAMAIAH
Praveen Chandrashekaraiah
Simon NETTESHEIM
Daniel Gisbertz
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
Publication of EP3938655A1 publication Critical patent/EP3938655A1/fr
Pending legal-status Critical Current

Links

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
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/105—Three-way check or safety valves with two or more closure 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
    • F04B43/02—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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/028—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms with in- or outlet valve arranged in the plate-like flexible member
    • 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
    • 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
    • F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves

Definitions

  • the invention relates to a valve arrangement for a diaphragm pump.
  • the invention also relates to a valve body of a valve of a diaphragm pump.
  • the invention also relates to a valve plate of a diaphragm pump.
  • the invention also relates to a diaphragm pump.
  • the invention also relates to the use of a specially equipped inlet valve body for a diaphragm pump.
  • the invention also relates to a method for operating a diaphragm pump.
  • Diaphragm pumps are known from DE 101 17 531 A1 and DE 20 2006 020 237 U1 which have a pump head connected to a drive.
  • the pump head has several, for example four, pump chambers, each of which is sealed off from a drive chamber by means of a pump membrane.
  • the respective pump membrane is connected to a swash plate arranged in the drive chamber via an assigned pump element.
  • a wobbling movement of the wobble plate sets the pump diaphragm into a wobbling axially periodic pumping movement.
  • the swash plate sits on a drive journal of a drive shaft connected to the drive.
  • the drive pin is inclined with respect to the longitudinal axis of the drive shaft and connected to the swash plate 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.
  • the inlet chamber is arranged centrally and the outlet chamber is arranged concentrically to the inlet chamber.
  • the outlet chamber has an outlet channel at its lower area in the vertical direction, with a valve plate having the pump chambers and valves between an intermediate plate part having the chambers and a membrane carrier part carrying the pump membranes is arranged, wherein the inlet chamber of the intermediate plate part in a shoulder of the valve plate an inlet valve plate having the inlet valves is upstream of the pump chambers.
  • Such pumps are used in particular in the fields of chemistry, pharmacy and biotechnology, in which the media to be pumped are sometimes very expensive, so that it is desirable that no or only a small residual volume of the pumped medium remains in the membrane pump after the pumping process . Furthermore, the complete filling of such diaphragm pumps with the fluid without air inclusions is advantageous for the delivery rate.
  • a diaphragm pump with at least one pump chamber is known, the pump chamber being 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 being connected to an outlet valve body Has closable outlet opening.
  • the membrane pump known from EP 3 327 287 A1 proposes designing the outlet opening in such a way that it surrounds the inlet opening or designing the inlet opening in such a way that it surrounds the outlet opening.
  • EP 3 327 287 A1 provides, according to a preferred embodiment, for the outlet opening of the outlet valve to be formed by at least two outlet opening sections which are separate from one another and which surround the inlet opening.
  • Fig. 4 of EP 3 327 287 A1 shows an embodiment in which a total of six
  • Outlet opening sections are provided which surround the inlet opening consisting of a plurality of individual holes.
  • the invention was based on the object of proposing measures with which the arrangement of the inlet of a diaphragm pump or the arrangement of an inlet chamber of a diaphragm pump, or the arrangement of an outlet or the arrangement of an outlet chamber of a diaphragm pump can be designed more freely.
  • valve arrangement according to claim 1 the valve body according to claim 8, valve plate according to claim 10, the diaphragm pump according to claim 11, the use according to claim 13 and the method according to claim 14.
  • Advantageous embodiments are specified in the subclaims and the description below.
  • the invention is based on the basic idea of breaking away from the sequential structure of a diaphragm pump known from the prior art, in which, however, an inlet chamber and an outlet chamber are often provided, which are upstream of a valve arrangement in the direction of a longitudinal axis of the diaphragm pump.
  • This structure often leads to an outlet channel leading to an outlet valve, which, for example, connects the pump chamber to an outlet chamber via the outlet valve, or an inlet channel closed with an inlet valve, which connects an inlet chamber to the pump chamber via the inlet valve, either parallel or at a small angle (Angle of less than 45 °) to the longitudinal axis of the diaphragm pump.
  • This arrangement requires that the inlet chamber and the outlet chamber are arranged in front of the valve plate. This leads to an increased length of the pump.
  • the invention has now recognized that advantages can be achieved with a change in the geometry of the inlet channel, namely if the inlet channel is designed so that it has a first part and a second part adjoining the first part, the second part has an outlet opening located on the inlet side and the first part extending at an angle to the second part.
  • Such an embodiment makes it possible, for example, to have an inlet chamber protrude even closer towards the pump chamber in the viewing direction of the longitudinal axis of the diaphragm pump. It is even possible to have the inlet chamber or sections of the inlet chamber protrude into the valve plate, for example into the center between valve arrangements arranged in a star shape around this center in the valve plate.
  • the first part of the inlet channel which according to the invention runs at an angle to the second part of the inlet channel, allows the fluid to be pumped from an inlet chamber initially at a clear angle to the longitudinal axis of the diaphragm pump, for example at an angle of more than 45 ° to the longitudinal axis of the To guide diaphragm pump, wherein the fluid flow can then be brought through the second part of the inlet channel adjoining the first part in a flow direction that runs parallel to the longitudinal axis of the diaphragm pump or at a small angle to the diaphragm pump.
  • a valve arrangement is understood to be an assembly which has an inlet side and an outlet side, a first outlet channel, a second outlet channel, an inlet channel, an inlet valve body and one or more outlet valve bodies.
  • the valve assembly may have one or more bodies that have one side in common that can be referred to as the inlet side and that have another side in common that can be referred to as the outlet side.
  • the first outlet channel and the second outlet channel and the inlet duct can be connected to this or to the bodies of the valve arrangement in such a way that it can be moved between a closed position and an open position.
  • the outlet valve body or the outlet valve bodies can be connected to the body or to the bodies that form the valve arrangement in such a way that they can be moved between a closed position and an open position, but are otherwise carried by the body or bodies .
  • the inlet channel is embodied in a separate body.
  • the first outlet channel and the second outlet channel are embodied in a common body.
  • the first outlet channel are designed in a separate body and the second outlet channel in a separate body.
  • the valve arrangement should be composed of several bodies, the individual bodies of the valve arrangement are preferably firmly connected to one another, so that the valve arrangement forms a coherent structure.
  • the valve arrangement has a single body in which the first outlet channel, the second outlet channel and the inlet channel are implemented.
  • this single body is an integral part of a superordinate component.
  • the invention also proposes a valve plate which has at least one valve arrangement according to the invention.
  • the valve plate preferably has a one-piece base body, the body through which the first outlet channel, the second outlet channel and the inlet channel are guided being a sub-region of this one-piece base body.
  • the invention is essentially aimed at the valve arrangement defined in this way, since designs are conceivable in which the valve arrangement is arranged and / or clearly spaced from a pump chamber of a diaphragm pump and / or clearly spaced from an inlet chamber of a diaphragm pump or an inlet of a diaphragm pump is arranged at a clear distance from an outlet chamber of a diaphragm pump or an outlet opening of a diaphragm pump.
  • the inlet side forms a closure of a channel, which then continues from the inlet side and opens into a pump chamber.
  • Embodiments are also conceivable in which the outlet side forms the end of a channel which continues from the outlet side and possibly opens into an outlet chamber of a diaphragm pump or leads to an outlet opening of a diaphragm pump. Since the advantages of the invention can already be realized with the special features of the valve arrangement as described in claim 1, without having to rely on a specific relative position of the valve arrangement to a pump chamber, an inlet chamber, an inlet opening of a diaphragm pump, an outlet chamber or one When the outlet opening of a diaphragm pump arrives, the core of the invention is aimed at the valve arrangement configured in this way.
  • the valve arrangement has an inlet side.
  • the valve arrangement has an inlet channel and a first outlet channel and a second outlet channel.
  • the valve arrangement thus serves to guide a fluid via the inlet channel to a specific location. This particular location is called the inlet side.
  • the valve arrangement serves to supply fluid that is located on the inlet side to another location via the first outlet channel and the second outlet channel. That other place is the outlet side.
  • the exact geometric shape of the inlet side and the exact geometric shape of the outlet side are not important.
  • the inlet side is a surface.
  • the outlet side is a surface.
  • the inlet side is a circular or elliptical surface.
  • the outlet side is a circular or an elliptical surface.
  • the inlet side and / or the outlet side have a rectangular, particularly preferably a square area, a triangular area, a trapezoidal area, the area of a parallelogram, the area of a polygon, particularly preferably a regular pentagon, a regular Is a hexagon, a regular octagon or a regular polygon.
  • the surface center point of the inlet side and the surface center point of the outlet side lie on one line, particularly preferably on a horizontal line.
  • the inlet side runs parallel to the outlet side. If the inlet side or the outlet side are not flat, since in particular embodiments are also conceivable in which the inlet side or the outlet side are designed in the shape of a dome or the inlet side or the outlet side have recessed areas that are connected to other areas of the inlet side or the Are connected to the outlet side, geometric information on orientations of the inlet side or the outlet side relative to other objects relate, in particular, to the orientation of a representative surface for the inlet side or the outlet side.
  • the representative surface is understood to be the flat surface which runs perpendicular to the surface normal through the centroid of the inlet side and which is arranged in such a way that the Sum of all shortest distances from each point on the inlet side to a point on the representative level is the smallest.
  • the valve arrangement according to the invention has a first outlet channel. This extends from an inlet opening arranged on the inlet side to an outlet opening arranged on the outlet side.
  • the valve arrangement according to the invention furthermore has a second outlet channel which extends from an inlet opening arranged on the inlet side to an outlet opening arranged on the outlet side.
  • the valve arrangements have further, for example a third and / or fourth or possibly also a fifth or even further outlet channels, each of which extends from an inlet opening on the inlet side to an outlet opening on the outlet side.
  • first outlet channel and / or the second outlet channel each extend along a longitudinal axis. It is true that embodiments are also conceivable in which the first outlet channel and / or the second outlet channel do not extend entirely or possibly even not at all along a longitudinal axis. Meander-shaped designs of the first outlet channel or of the second outlet channel are also conceivable. However, the embodiments are preferred in which the respective outlet channel extends along a longitudinal axis. Such outlet channels can in particular also be easily produced.
  • the valve arrangement according to the invention also has an inlet channel.
  • the inlet channel is designed in several parts. It has at least a first part and a second part adjoining the first part. A fluid flowing through the inlet channel thus initially flows through the first part and then subsequently flows through the second part adjoining the first part.
  • the inlet channel has further parts. These can in particular be parts that are upstream of the first part. In such embodiments, the fluid would thus first flow through the other parts of the inlet channel, then enter the first part of the inlet channel and, after flowing through the first part, then enter the second part adjoining the first part.
  • the second part of the inlet channel has an outlet opening which is arranged on the inlet side.
  • the second part of the inlet channel thus represents the last part of the inlet channel.
  • the first part extends at an angle to the second part.
  • the first part of the inlet channel extends at least for part of its extension along a longitudinal axis and the second part of the inlet channel extends at least for part of its extension along a longitudinal axis.
  • the angle between the first part and the second part is then particularly preferably the angle between these two longitudinal axes.
  • the first part of the inlet channel extends entirely along a longitudinal axis.
  • the second part of the inlet channel can have a part of its extension that does not extend along a longitudinal axis.
  • At least that part of the second part of the inlet channel which adjoins the outlet opening of the second part of the outlet channel is designed such that it runs along a longitudinal axis.
  • the part of the second part of the inlet channel directly adjoining the first part of the inlet channel is designed like a chamber.
  • Such an embodiment can be particularly useful if, for example, a first part of the inlet channel extending along a longitudinal axis cannot be guided so that its longitudinal axis intersects the longitudinal axis of a second part of the inlet channel extending entirely along a second longitudinal axis.
  • first part of the inlet channel extends along a longitudinal axis and the part of the second part of the inlet channel adjoining the outlet opening extends along a longitudinal axis, but a chamber is necessary as a further part of the second part of the inlet channel may have any geometric shape and mediate between the first part of the inlet channel and the part of the second part of the inlet channel which extends along a longitudinal axis.
  • a line between the surface center of an initial opening and the geometric center of a can be used to determine the angle between the first part and the second part End opening of the respective part of the inlet channel is formed and the angle between these lines can be determined.
  • the first part of the inlet channel is followed by a single second part of the inlet channel.
  • a plurality of second parts of the inlet channel are provided.
  • the inlet channel has a first part, which then branches into a plurality of second parts, each of which adjoins the first part. If several second parts of the inlet channel are provided, the respective second part of the inlet channel each has an outlet opening which is arranged on the inlet side.
  • Such a branching embodiment can serve to distribute the outlet of the fluid flowing through the inlet channel on the inlet side of the valve arrangement over the inlet side.
  • only a single second part of the inlet channel is provided, only a single outlet opening is provided so that the fluid only exits at one point on the inlet side. If a branching embodiment is selected, several outlet openings can be provided the inlet side can be provided distributed and the fluid thus emerge at several points on the inlet side.
  • the valve arrangement according to the invention provides that an inlet valve body is provided at the outlet opening of the second part of the inlet channel, which body closes the outlet opening in a closed position and releases the outlet opening in an open position.
  • the movement from the closed position into the open position of the inlet valve body is a rotary movement, for example in embodiments in which the inlet valve body is a ball with a passage bore through the ball.
  • the movement from the closed position into the open position is a pivoting movement or a folding movement in which a part of the valve is pivoted or folded in relation to another part of the valve.
  • the inlet valve body is the valve body of an umbrella valve
  • This movement is regularly brought about by a fluid pressure applied to the closed valve body, while the elastic restoring forces of the umbrella valve cause the edge sections of the umbrella valve to pivot back into the closed position in the absence of a correspondingly high fluid pressure.
  • the inlet valve body performs a linear movement from the closed position into the open position.
  • the second part of the inlet channel adjoining the outlet opening extends along a longitudinal axis, the movement of the inlet valve body from the closed position to the open position taking place along a line that corresponds to the longitudinal axis, or runs parallel to this longitudinal axis, or in one small angle of less than 45 °, particularly preferably of less than 30 °, particularly preferably of less than 20 ° to this longitudinal axis.
  • the inlet valve body is held by the valve arrangement.
  • the inlet valve body particularly preferably has a pin-like section which is arranged in a tubular recess of the valve arrangement.
  • the part of the inlet valve body which closes the outlet opening in its closed position is arranged at one end of the pin.
  • This can be the screen of an umbrella valve, for example.
  • a blocking element is provided on the opposite side of the pin, which can fix the position of the inlet valve body in the closed position.
  • this blocking element can, for example, define the position of the central section with respect to which the edge sections are located Perform a swivel movement or a folding movement to open the valve.
  • the blocking element can on the one hand allow the inlet valve body to be moved from the closed position to the open position by moving the pin within the tube, but on the other hand by blocking further movement of the pin along the tube prevents further movement of the inlet valve body and thus determines the opening position of the inlet valve body.
  • the valve arrangement according to the invention provides that an outlet valve body is provided on the outlet opening of the first outlet valve, which body closes the outlet opening in a closed position and releases the outlet opening in an open position.
  • the movement from the closed position into the open position of the outlet valve body is a rotary movement, for example in embodiments in which the outlet valve body is a ball with a passage bore through the ball.
  • the movement from the closed position into the open position is a pivoting movement or a folding movement in which a part of the valve is pivoted or folded in relation to another part of the valve.
  • the outlet valve body is the valve body of an umbrella valve
  • there is a movement from the closed position to the open position in which edge sections of the umbrella valve pivot or fold relative to a central section of the umbrella valve.
  • This movement is regularly brought about by a fluid pressure applied to the closed valve body, while the elastic restoring forces of the umbrella valve cause the edge sections of the umbrella valve to pivot back into the closed position in the absence of a correspondingly high fluid pressure.
  • the outlet valve body performs a linear movement from the closed position into the open position.
  • the first outlet channel extends along a longitudinal axis, the movement of the outlet valve body from the closed position to the open position taking place along a line that corresponds to the longitudinal axis, or runs parallel to this longitudinal axis, or at a small angle of less than 45 °, particularly preferably less than 30 °, particularly preferably less than 20 °, extends to this longitudinal axis.
  • the outlet valve body is held by the valve arrangement.
  • the outlet valve body particularly preferably has a pin-like section which is arranged in a tubular recess of the valve arrangement.
  • the part of the outlet valve body which closes the outlet opening in its closed position is arranged at one end of the pin.
  • a blocking element is provided on the opposite side of the pin, which can fix the position of the outlet valve body in the closed position.
  • this blocking element can, for example, define the position of the central section, with respect to which the edge sections perform their pivoting or folding movement to open the valve.
  • the blocking element can on the one hand allow the outlet valve body to be moved from the closed position to the open position by moving the pin within the tube, but on the other hand by blocking a further movement of the pin along the tube prevents further movement of the outlet valve body and thus determines the opening position of the outlet valve body.
  • a separate outlet valve body (a second outlet valve body) is provided for the second outlet channel, namely an outlet valve body which closes the outlet opening of the second outlet channel in a closed position and which releases the outlet opening of the second outlet channel in an open position.
  • the movement from the closed position to the open position of the second outlet valve body is a rotary movement, for example in embodiments in which the second outlet valve body is a ball with a passage bore through the ball.
  • the movement from the closed position into the open position is a pivoting movement or a folding movement in which a part of the valve is pivoted or folded in relation to another part of the valve.
  • the second outlet valve body is the valve body of an umbrella valve
  • This movement is regularly brought about by a fluid pressure applied to the closed valve body, while the elastic restoring forces of the umbrella valve cause the edge sections of the umbrella valve to pivot back into the closed position in the absence of a correspondingly high fluid pressure.
  • the second outlet valve body performs a linear movement from the closed position into the open position.
  • the second outlet channel extends along a longitudinal axis, the movement of the second outlet valve body from the closed position to the open position taking place along a line that corresponds to the longitudinal axis, or runs parallel to this longitudinal axis, or at a small angle of less than 45 °, in particular preferably less than 30 °, particularly preferably less than 20 °, to this longitudinal axis.
  • the second outlet valve body is held by the valve arrangement.
  • the second outlet valve body particularly preferably has a pin-like section which is arranged in a tubular recess of the valve arrangement. In a preferred embodiment, one end of the pin is part of the second
  • Arranged outlet valve body which closes the outlet opening in its closed position.
  • This can be the screen of an umbrella valve, for example.
  • a blocking element is provided on the opposite side of the pin, which can fix the position of the second outlet valve body in the closed position.
  • this blocking element can, for example, define the position of the central section with respect to which the edge sections perform their pivoting movement or folding movement to open the valve.
  • the blocking element can on the one hand allow the second outlet valve body to be moved from the closed position to the open position by moving the pin inside the tube, but on the other hand by blocking a further movement of the pin along of the tube prevents further movement of the second outlet valve body and thus determines the opening position of the second outlet valve body.
  • valve arrangement is also conceivable in which the outlet valve body, which closes the outlet opening of the first outlet channel in a closed position and releases the outlet opening of the first outlet channel in an open position, is designed such that it is in the closed position in which it opens the outlet opening of the first outlet channel closes, also closes the outlet opening of the second outlet channel, wherein in the open position in which it releases the outlet opening of the first outlet channel, it also releases the outlet opening of the second outlet channel.
  • Such an embodiment can be achieved, for example, by a valve body of an umbrella valve in which a first section, in particular a first edge section of the umbrella, can close the outlet opening of the outlet channel in the closed position of the outlet valve body and another section, in particular another edge section of the umbrella, can close the outlet opening of the can close the second outlet channel in the closed position.
  • the first outlet channel runs along a longitudinal axis and the second outlet channel runs along a longitudinal axis.
  • the angle between the longitudinal axis of the first outlet channel and the longitudinal axis of the second outlet channel is less than 90 °, in particular preferably less than 45 °, in particular less than 30 °, in particular less than 20 °, in particular less than 10 °, in particular less than 5 °.
  • the two longitudinal axes particularly preferably run parallel.
  • the first outlet channel runs along a longitudinal axis and the second part of the inlet channel runs at least for part of its extension along a longitudinal axis.
  • the angle between the longitudinal axis of the first outlet channel and the longitudinal axis of the second part of the inlet channel is less than 90 °, particularly preferably less than 45 °, in particular less than 30 °, in particular less than 20 °, in particular less than 10 ° , in particular less than 5 °.
  • the two longitudinal axes particularly preferably run parallel.
  • the second outlet channel runs along a longitudinal axis and the second part of the inlet channel runs at least for part of its extent along a longitudinal axis.
  • the angle between the longitudinal axis of the second outlet channel and the longitudinal axis of the second part of the inlet channel is less than 90 °, particularly preferably less than 45 °, in particular less than 30 °, in particular less than 20 °, in particular less than 10 ° , in particular less than 5 °.
  • the two longitudinal axes particularly preferably run parallel.
  • the first part of the inlet channel runs along a longitudinal axis and the second part of the inlet channel runs at least for part of its extent along a longitudinal axis.
  • the angle between the longitudinal axis of the first part of the inlet channel and the longitudinal axis of the second part of the inlet channel is smaller than 90 °, particularly preferably smaller than 45 °, in particular smaller than 30 °, in particular smaller than 20 °, in particular smaller than 10 °, in particular less than 5 °.
  • the angle between the longitudinal axis of the first part of the inlet channel and the longitudinal axis of the second part of the inlet channel is greater than 5 °, particularly preferably greater than 10 °, in particular greater than 20 °, in particular greater than 30 °, in particular greater than 45 °, in particular greater than 90 °.
  • the first outlet channel runs along a longitudinal axis and the first part of the inlet channel runs along a longitudinal axis.
  • the angle between the longitudinal axis of the first outlet channel and the longitudinal axis of the first part of the inlet channel is less than 90 °, particularly preferably less than 45 °, in particular less than 30 °, in particular less than 20 °, in particular less than 10 ° , especially less than 5 °.
  • the angle between the longitudinal axis of the first part of the inlet channel and the longitudinal axis of the first outlet channel is greater than 5 °, particularly preferably greater than 10 °, in particular greater than 20 °, in particular greater than 30 °, in particular greater than 45 °, in particular greater than 90 °.
  • the second outlet channel runs along a longitudinal axis and the first part of the inlet channel runs along a longitudinal axis.
  • the angle between the longitudinal axis of the second outlet channel and the longitudinal axis of the first part of the inlet channel is less than 90 °, particularly preferably less than 45 °, in particular less than 30 °, in particular less than 20 °, in particular less than 10 ° , in particular less than 5 °.
  • the angle between the longitudinal axis of the first part of the inlet channel and the longitudinal axis of the second outlet channel is greater than 5 °, particularly preferably greater than 10 °, in particular greater than 20 °, in particular greater than 30 °, in particular greater than 45 °, in particular greater than 90 °.
  • the first outlet channel is arranged above the second outlet channel.
  • this design of a valve arrangement can be used to enable special venting and / or special emptying of the pump chamber of the diaphragm pump.
  • the shape of the pump chamber of the diaphragm pump, in which the valve arrangement of this embodiment is used is matched to the valve arrangement in such a way that the inlet opening of the first outlet channel forms the uppermost point of the pump chamber and / or the inlet opening of the second outlet channel forms the lowest point of the pump chamber, on the one hand, a complete venting of the pump chamber can be effected, since any air can be discharged from the pump chamber through the first outlet channel located high above or completely emptied because any residual liquid from the pump chamber through the particularly deep second outlet channel from the Pump chamber can be discharged.
  • the second part of the inlet channel is arranged between the first outlet channel and the second outlet channel.
  • the first outlet channel is arranged above the second part of the inlet channel and / or the second part of the inlet channel is arranged above the second outlet channel.
  • Such an embodiment increases the degrees of freedom for the design of the inlet valve body, since the inlet valve body can be designed to close the outlet opening of the inlet channel with less consideration of the inlet opening of the first outlet channel and the inlet opening of the second outlet channel.
  • the risk that the inlet valve body covers the inlet opening of the first outlet channel or the inlet opening of the second outlet channel can be reduced in such an embodiment.
  • the first part of the inlet channel leads from a location below a horizontal plane which is arranged in such a way that it intersects the lowest point of that of the two outlet channels which is located deepest of the two outlet channels (first outlet channel and second outlet channel) , to a place above this horizontal plane.
  • the first part of the inlet channel leads from a location above a horizontal plane which is arranged in such a way that it intersects the highest point of that of the two outlet channels which is arranged highest of the two outlet channels (first outlet channel and second outlet channel) , to a place below this horizontal plane.
  • the first part of the inlet channel leads from a location outside an imaginary area into the interior of the imaginary area, the transition from the first part of the inlet channel to the second part of the inlet channel being arranged in this area, and the imaginary area through the inlet side is delimited on the one hand and by the outlet side on the other side and an envelope surrounding the edge of the inlet side and the edge of the outlet side.
  • the envelope has the shape of a side surface of a cylinder (if the inlet side and the outlet side are the same size) or the shape of the side surface of a truncated cone (if the inlet side and the outlet side are not the same size are).
  • the inlet valve body is coupled to the outlet valve body, which closes the outlet opening of the first outlet channel in a closed position and releases the outlet opening of the first outlet channel in an open position.
  • the coupling can particularly preferably be a rigid coupling.
  • the coupling is effected in that the inlet valve body has a rigid component is connected to the exhaust valve body.
  • the inlet valve body is designed as a screen of a screen valve, the pin of the screen can be used for such a coupling.
  • a "double umbrella valve" is created in which the inlet valve body is formed by a screen and a pin in the manner of an umbrella valve and the outlet valve body is also designed in the manner of an umbrella valve using the same pin by providing a further umbrella at the opposite end becomes.
  • the coupling is an elastic coupling.
  • the coupling is particularly preferably effected in that the inlet valve body is connected to the outlet valve body via an elastic component.
  • the inlet valve body is designed as a screen of a screen valve
  • the pin of the screen can be used for such a coupling, for example if the pin is made from an elastomer.
  • a "double umbrella valve" is created in which the inlet valve body is formed by a screen and a pin in the manner of an umbrella valve and the outlet valve body is also designed in the manner of an umbrella valve using the same pin by providing a further umbrella at the opposite end becomes.
  • the coupling can cause the inlet valve body to be in the closed position when the outlet valve body, which closes the outlet opening of the first outlet channel in the closed position and releases the outlet opening of the first outlet channel in an open position, is in the open position. Additionally or alternatively, the coupling can have the effect that the inlet valve body is in the open position when the outlet valve body, which closes the outlet opening of the first outlet channel in a closed position and releases the outlet opening of the first outlet channel in an open position, is in the closed position.
  • Such a coupling offers advantages in the control of a diaphragm pump, since this coupling can ensure that the inlet valve body is in the closed position when the outlet valve body, which closes the outlet opening of the first outlet channel, is in a closed position and the outlet opening of the first outlet channel is in releases an open position is in the open position.
  • Such a coupling offers advantages in the control of a diaphragm pump, since this coupling can ensure that the inlet valve body is in the open position when the outlet valve body, which closes the outlet opening of the first outlet channel, and the outlet opening of the first outlet channel in an open position, is in the closed position. If two outlet valve bodies are provided, a coupling between the inlet valve body and the two outlet valve bodies is also conceivable, which synchronizes the movements of the inlet valve body and the two outlet valve bodies.
  • the inlet valve body and / or the outlet valve body is a valve body of an umbrella valve.
  • the valve body is made from an elastomer, preferably from an ethylene-propylene-diene rubber.
  • a valve body according to the invention of a valve for a diaphragm pump can offer advantages if the valve body is designed as a screen, the screen having the shape of a circle from which at least one section of a circle has been removed, or the screen has the shape of an ellipse in which at least one section of the ellipse has been removed.
  • Such a valve body is suitable for closing the outlet opening of an inlet channel in a closed position.
  • the circular segment removed according to the invention or the elliptical segment removed according to the invention creates a space in which the inlet opening for an outlet channel can be located.
  • Such a valve body thus makes it possible to arrange the outlet opening of an inlet channel closer to an inlet opening of an outlet channel.
  • the screen is designed in the form of a circle, with two opposing circle sections were removed. This creates the possibility of using the inlet opening of a first outlet channel and the inlet opening of a second outlet channel, which are arranged one above the other, when the outlet opening of an inlet channel is arranged between the inlet openings
  • the screen is designed in the form of an ellipse, two opposing elliptical sections having been removed. This creates the possibility of bringing the inlet opening of a first outlet channel and the inlet opening of a second outlet channel, which are arranged one above the other, closer to the outlet opening of the inlet channel when the outlet opening of an inlet channel is arranged between the inlet openings.
  • the screen is designed in the form of a square, two opposite rectangular sections have been removed so that the screen has the shape of a rectangle. This creates the possibility of the inlet opening of a first outlet channel and the inlet opening of a second outlet channel, which are arranged one above the other, at between the inlet openings arranged outlet opening of an inlet channel to bring the inlet openings of the outlet channels closer to the outlet opening of the inlet channel.
  • the inlet valve body of the valve arrangement according to the invention is designed in the manner of the valve body according to the invention.
  • the outlet opening of the inlet channel is round or elliptical or segment-shaped.
  • the outlet opening of the inlet channel is formed by a plurality of outlet opening sections.
  • the outlet opening sections themselves can in turn be designed, for example, round, elliptical or in the shape of a segment of a circular arc. It is thus conceivable that the outlet opening of the inlet channel is embodied in a plate which is placed on a body in which, for example, the second part of the inlet channel is embodied.
  • openings can be made distributed over the cross section that the second part of the inlet channel, taken here as an example, has in the body, which together form the outlet opening of the inlet channel; the second part of the inlet channel would have a sieve or a perforated plate as a closure.
  • This embodiment offers itself as an alternative for a branching inlet channel, in which after the first part of the inlet channel there is a branching into several second parts of the inlet channel running next to one another, each second part being designed with its own outlet opening on the inlet side of the valve arrangement.
  • the inlet opening of the first outlet channel and / or the outlet opening of the first outlet channel is round or elliptical or in the shape of a segment of a circular arc.
  • the outlet opening of the first outlet channel is formed by a plurality of outlet opening sections.
  • the outlet opening sections themselves can in turn be designed, for example, round, elliptical or segment-shaped in a circular arc.
  • This embodiment offers itself as an alternative to an embodiment which is also possible, in which a multiplicity of narrow outlet channels are provided, which run next to one another from the inlet side to the outlet side of the valve arrangement.
  • the first outlet channel is a channel which is closed on the outlet side by a sieve or a perforated plate; in the other embodiment a plurality of channels running next to one another are provided, which lead from the inlet side to the outlet side.
  • a plurality of narrow outlet channels are provided, which run side by side from the inlet side to the outlet side of the valve arrangement.
  • the inlet opening of the second outlet channel and / or the outlet opening of the second outlet channel is round or elliptical or in the shape of a segment of a circular arc.
  • the outlet opening of the second outlet channel is formed by a plurality of outlet opening sections.
  • the outlet opening sections themselves can in turn be designed, for example, round, elliptical or segment-shaped in a circular arc.
  • This embodiment offers itself as an alternative to an embodiment which is also possible, in which a multiplicity of narrow outlet channels are provided, which run next to one another from the inlet side to the outlet side of the valve arrangement.
  • the first outlet channel is a channel which is closed on the outlet side by a sieve or a perforated plate; in the other embodiment a plurality of channels running next to one another are provided, which lead from the inlet side to the outlet side.
  • the first outlet channel has the same cross-sectional shape at least in sections, but preferably over its entire longitudinal extent.
  • This cross-sectional shape is preferably the shape of a circle or an ellipse.
  • the second outlet channel has the same cross-sectional shape at least in sections, but preferably over its entire longitudinal extent.
  • This cross-sectional shape is preferably the shape of a circle or an ellipse.
  • the first part of the inlet channel has the same cross-sectional shape at least in sections, but preferably over its entire longitudinal extension.
  • This cross-sectional shape is preferably the shape of a circle or an ellipse.
  • the second part of the inlet channel has the same cross-sectional shape at least in sections, but preferably over its entire longitudinal extension. This cross-sectional shape is preferably the shape of a circle or an ellipse.
  • valve plate according to the invention of a diaphragm pump has a valve arrangement according to the invention and / or a valve body according to the invention integrated in the valve plate.
  • Diaphragm pumps as they are known from the state of the art, for example from DE 10 2008 035 592 B4 or EP 3 327 287 A1, are often assembled by lining up plates.
  • the diaphragm pump shown in Fig. 1 of EP 3 327 287 A1 has, for example, a front plate, an intermediate plate which can also be referred to as a chamber housing, a valve plate and an end plate which can also be referred to as a diaphragm support with a pump diaphragm, which via pump elements with the in Fig To EP 3 327 287 A1, swash plate not shown are connected.
  • the invention has recognized that the advantages of Invention can already be achieved by equipping the valve plate with the valve arrangement according to the invention in such a diaphragm pump structure.
  • simply replacing the valve plate can lead to the advantages of the invention being achieved in this diaphragm pump.
  • the valve plate is therefore an independently marketable item that can be sold, for example, for retrofitting existing diaphragm pumps.
  • the valve plate according to the invention has a one-piece base body into which the first outlet channel, the second outlet channel and the inlet channel are introduced. This can be done, for example, by a machining process or also by etching. It is also conceivable to manufacture the base body of the valve plate by a casting process, with the first outlet channel, the second outlet channel and the inlet channel either being introduced into the base body afterwards, for example by a machining process, or already generated by the geometry of the casting mold during casting can be. It is also conceivable to manufacture the valve plate by additive manufacturing, particularly preferably by 3D printing.
  • the valve plate has a chamber side.
  • the chamber side is the side that faces a pump chamber if the pump chamber is formed in a separate plate adjoining the valve plate, or is the side in which part or the entire pump chamber is implemented.
  • the inlet side of the valve arrangement according to the invention forms part of the chamber side of the valve plate according to the invention.
  • the inlet side of the valve arrangement according to the invention forms the base of a recess made in the chamber side of the valve plate according to the invention. Part of the pump chamber or even the entire pump chamber can thus be formed in the valve plate itself.
  • a recess which forms the pump chamber and is made in the chamber side of the valve plate according to the invention could be closed by a membrane resting on the chamber side of the valve plate, which can generate the pump strokes through its movement.
  • the valve plate has an inlet / outlet side.
  • the inlet / outlet side is the side that faces an inlet volume and an outlet volume if the inlet volume and the outlet volume are formed in a separate plate adjoining the valve plate, or is the side in which part or all of the outlet volume or some or all of the inlet volume is executed.
  • the outlet side of the valve arrangement according to the invention forms part of an inlet / Outlet side of the valve plate according to the invention.
  • the outlet side of the valve arrangement according to the invention forms the base of a recess made in the inlet / outlet side of the valve plate according to the invention.
  • the valve plate has several valve assemblies according to the invention integrated into the valve plate, or several valve bodies according to the invention.
  • the valve plate has two, three, four, five, six or even more than six valve assemblies according to the invention or valve bodies according to the invention integrated into the valve plate.
  • these are arranged uniformly on a ring around a point, preferably around the center point of the valve plate.
  • the position of the first outlet channel relative to the second outlet channel and / or the location of the first outlet channel relative to the second part of the inlet channel is the same for all valve arrangements.
  • the first outlet channel is particularly preferably arranged above the second part of the inlet channel and / or the second part of the inlet channel is arranged above the second outlet channel.
  • the first outlet channel is arranged directly vertically above the second outlet channel.
  • embodiments are also conceivable in which the inlet opening of the first outlet channel and the inlet opening of the second outlet channel of each valve arrangement lie on one line, all of these lines intersecting at a point on the valve plate (radial arrangement).
  • valve plate according to the invention has through bores.
  • screws with which the individual plates of a diaphragm pump can be connected to one another can be passed through these through-holes.
  • the valve plate according to the invention has an inlet chamber.
  • the inlet chamber can in particular preferably be designed as a cup-like recess which extends from the inlet / outlet side into the interior of the valve plate.
  • the first part of the inlet channel leads from this inlet chamber to the second part of the inlet channel. If, in a preferred embodiment, several valve arrangements according to the invention are provided on the valve plate according to the invention, then a preferred one leads to Embodiment each first part of each inlet channel from the inlet chamber to the respective second part of the respective inlet channel.
  • the respective first parts of the inlet channels are designed in a star shape continuing from the inlet chamber.
  • the inlet chamber is arranged in the center of the valve plate.
  • the inlet / outlet side of the valve plate according to the invention has an annular groove for receiving a seal.
  • two concentric annular grooves are provided for receiving a sealing ring each.
  • the first annular groove runs around an inlet chamber provided in the preferred embodiment.
  • the second annular groove runs around the outside of the valve arrangements according to the invention provided on the valve plate according to the invention.
  • annular grooves for receiving seals are provided on the side of the valve chamber on the membrane side.
  • the membrane pump according to the invention has a valve arrangement according to the invention and / or a valve plate according to the invention and / or a valve body according to the invention.
  • the membrane has a front plate.
  • An inlet opening and an outlet opening on the front side of the front plate or on the circumference of the front plate can be provided on the front plate.
  • An outlet volume and an inlet volume can be provided on the rear side of the front panel.
  • a channel in the front plate connects the outlet opening with the outlet volume.
  • a channel provided in the front plate connects the inlet opening with the inlet volume.
  • the inlet volume is particularly preferably designed in the middle and is surrounded by an outlet volume designed in a ring shape.
  • a valve plate according to the invention lies against the rear of the front plate.
  • the respective first part of the inlet channel of the respective valve arrangement is connected to the inlet volume.
  • the first part of the inlet channel opens directly at an inlet / outlet side of the valve plate and thus opens into the inlet volume provided on the rear of the front plate when the valve plate rests on the rear of the front plate.
  • the valve plate has a cup-like recess on its inlet / outlet side which opens towards the inlet volume when the valve plate is attached to the rear of the front plate.
  • the respective first parts of the inlet channels can be continued from such a cup-like inlet chamber.
  • the side of the valve plate opposite the front plate (the side of the valve plate on the membrane side) is adjoined by an end plate, which can also be referred to as a membrane carrier, with pump membranes.
  • the pump chambers are designed as cup-like recesses in the valve plate, which extend from the membrane side of the valve plate inward into the valve plate and at the bottom of which the inlet side of the respective valve arrangement is arranged. These cup-like pump chambers can be closed by placing a membrane on the membrane-side side of the valve plate.
  • One membrane is provided for each pump chamber.
  • the respective pump diaphragm can be connected to a swash plate arranged in a drive chamber of the diaphragm pump via a pump element assigned to it.
  • the pump membrane can be set in a tumbling, axially periodic pumping movement by a wobbling movement of the wobble plate.
  • the swash plate can sit on a drive journal of a drive shaft connected to the drive.
  • the membrane pump according to the invention has several valve arrangements according to the invention or several valve bodies according to the invention or several valve plates according to the invention.
  • a line connecting the center of the area of the inlet side with the center of the area of the outlet side lies parallel to the longitudinal axis of the diaphragm pump or at a small angle to the longitudinal axis of the diaphragm pump, particularly preferably at an angle of less than 45 °, particularly preferably at an angle of less than 30 °, particularly preferably at an angle of less than 25 °.
  • the inlet side forms part of the wall which delimits the pump chamber in the diaphragm pump.
  • the inlet side limits the Pump chamber and is also arranged opposite the pump chamber on a delimiting membrane.
  • the longitudinal axis of the diaphragm pump is particularly preferably an axis which runs parallel to the direction in which the diaphragms perform their pump strokes.
  • the longitudinal axis of the diaphragm pump can be the axis around which the rotational symmetry of the valve plate results.
  • the invention further proposes the use of an inlet valve body coupled to an outlet valve body in a diaphragm pump, the coupling of the inlet valve body to the outlet valve body causing a movement of the inlet valve body to cause a movement of the outlet valve body.
  • a coupling can bring about a safe and simultaneous opening and closing of an outlet opening of an inlet channel and an outlet opening of an outlet channel.
  • the invention also proposes a method for operating a diaphragm pump, the diaphragm pump having a pump chamber and a movable diaphragm adjoining the pump chamber, a movement of the diaphragm in a first direction, referred to as the suction direction, increasing the volume of the pump chamber and a movement of the
  • the diaphragm reduces the volume of the pump chamber in the opposite direction, referred to as the pressure direction
  • the diaphragm pump has a valve arrangement according to the invention, the inlet side of the valve arrangement adjoining the pump chamber.
  • the membrane is moved in the suction direction, with the inlet valve body being pulled towards its open position when the membrane is moved in the suction direction.
  • the method provides that the membrane is moved in the pressure direction, the inlet valve body being pressed towards its closed position when the membrane is moved in the pressure direction.
  • the membrane pump according to the invention is particularly preferably used in the field of chemistry, pharmacy or biotechnology, as the media to be pumped are sometimes very expensive, so it is desirable that after the pumping process, as little or no residual volume as possible of the pumped medium is in the membrane pump remains. Furthermore, the complete filling of such diaphragm pumps with the fluid without air inclusions is advantageous for the delivery rate. Conceivable areas of application are tangential flow filtration or chromatography.
  • Fiq. 1 a diaphragm pump in a perspective view
  • Fiq. 2 is an exploded view of the diaphragm pump shown in FIG. 1;
  • Fiq. 3 is a perspective view from behind of the front panel of FIG.
  • Fiq. 4 is a perspective view from the front of a valve plate in FIG.
  • Fiq. 5 shows a front view of a valve plate of the diaphragm pump according to FIG. 1;
  • Fiq. 6 is a perspective view from behind of a valve plate in FIG.
  • Fiq. 7 shows a view from behind of the diaphragm pump according to FIG. 1;
  • Fiq. 8 shows a sectional illustration of the diaphragm pump according to FIG. 1 along the line A-A in FIG. 7;
  • Fiq. 9 shows a view from the front of the valve plate according to FIG. 5;
  • Fiq. 10 is a sectional view of the valve plate according to FIG. 7 along the line B-B in FIG. 9;
  • Fiq. 1 1 is a perspective, partially transparent view of the valve plate according to FIG. 9;
  • Fiq. 12 a sectional side view of a valve of the valve plate according to FIGS. 9 and
  • the diaphragm pump 1 shown in particular in FIGS. 1, 2, 8 has a front plate 2, a valve plate 3 and a diaphragm plate 4.
  • the front plate 2, the valve plate 3 and the membrane plate 4 are screwed together by means of four screws 13.
  • An inlet connection piece 5 is screwed on and an outlet connection piece 6 is screwed on to the front of the front plate 2.
  • the inlet connector 5 and the outlet connector 6 allow hoses to be pushed on and held easily and securely.
  • other types of connection are also conceivable, for example hose couplings.
  • O-ring seals seal the inlet connection piece 5 and the outlet connection piece 6 from the base body of the front plate 2.
  • An inlet volume 7 is formed on the rear side of the front plate 2 (cf. FIG. 3).
  • the inlet volume 7 extends partly into the valve plate 3 (cf. FIGS. 2, 4, 5, 8, 9, 10, 11).
  • the inlet volume 7 is surrounded by a seal 17.
  • an outlet volume 8 is formed on the rear side of the front plate 2 (cf. FIG. 3).
  • the outlet volume 8 is surrounded by a seal 18.
  • the membrane plate 4 has three openings 9.
  • a membrane 10 is arranged in each opening 9. As the sectional drawing of FIG. 8 shows, the respective membrane 10 lies with a circumferential bead 11 in a recess 12 formed on the front side of the membrane plate 4 and is held there by the screw connection of the membrane plate 4 to the valve plate 2 (screws 13).
  • the respective membrane 10 has a drive pin 14.
  • the respective drive pin 14 has an external thread with which it is screwed into an internal thread of an opening 15 in a support ring 16.
  • the pump stroke of the respective membrane 10 is thereby generated. Due to the tumbling movement, the respective pump strokes are offset in time so that the diaphragm pump pumps more evenly and pulsation in the pumped fluid is avoided or reduced.
  • the diaphragm pump 1 shown is designed with three pump chambers. It is conceivable that membrane pumps according to the invention are also designed with two pump chambers, but particularly preferably also with more than three pump chambers, for example with four, five, six, seven or even more pump chambers. The more pumping chambers are used, the higher the structural design and the number of parts to be installed, but the more the pulsation in the pumped fluid can be avoided or reduced.
  • the further three holes provided on the support ring 16 can be used to receive pins that are located on the driving swash plate and prevent relative rotation of the swash plate.
  • the valve plate 2 has three valve arrangements 20 according to the invention.
  • Each valve arrangement 20 has an inlet side 21 pointing towards the membrane plate 4 and an outlet side 22 pointing towards the front side 2.
  • Each valve arrangement 20 has a first outlet channel 23 which leads from an inlet opening 24 arranged on the inlet side 21 and assigned to the first outlet channel 23 to an outlet opening 25 arranged on the outlet side 22 and assigned to the first outlet channel 23.
  • Each valve arrangement has a second outlet channel 26 which leads from an inlet opening 27 arranged on the inlet side 21 and assigned to the second outlet channel 26 to an outlet opening 28 arranged on the outlet side 22 and assigned to the second outlet channel 26.
  • Each first outlet channel 23 is arranged above the second outlet channel 26.
  • Each valve arrangement 20 has an inlet channel 30.
  • Each inlet channel 30 has a first part 31 and a second part adjoining the first part 31 32 on.
  • the second part 32 has an outlet opening 33 which is arranged on the inlet side 21.
  • the first part 31 extends at an angle to the second part 32.
  • the second part 32 of the inlet channel 30, viewed in the vertical direction, is arranged between the first outlet channel 23 and the second outlet channel 26.
  • an inlet valve body 40 is provided which closes the outlet opening 33 in a closed position (cf. FIG. 12) and releases the outlet opening 33 in an open position.
  • an outlet valve body 41 is provided, which closes the outlet opening 25 in a closed position and releases the outlet opening 25 in an open position.
  • the outlet valve body 41 which closes the outlet opening 25 of the first outlet channel 23 in a closed position and releases the outlet opening 25 of the first outlet channel 23 in an open position, is designed so that in the closed position it closes the outlet opening 25 of the first outlet channel 23 , also closes the outlet opening 28 of the second outlet channel 26, and that in the open position in which it releases the outlet opening 25 of the first outlet channel 23, it also releases the outlet opening 28 of the second outlet channel 26.
  • the first outlet channel 23 runs along a longitudinal axis (cf. FIGS. 8, 10).
  • the second outlet channel 26 runs along a longitudinal axis (cf. FIGS. 8, 10).
  • the angle between the longitudinal axis of the first outlet channel 23 and the longitudinal axis of the second outlet channel 26 is smaller than 90 °, namely approximately 20 ° (cf. FIG. 10).
  • the second part 32 of the inlet channel 30 runs at least for part of its extent along a longitudinal axis.
  • the angle between the longitudinal axis of the first outlet channel 23 and the longitudinal axis of the second part 32 of the inlet channel 30 is less than 90 °, namely about 10 ° (the longitudinal axis of the second part 32 of the inlet channel 30 runs approximately horizontally in the embodiment shown here (cf. Fig. 8) and the longitudinal axis of the first outlet channel 23 runs approximately 10 ° to the horizontal).
  • the angle between the longitudinal axis of the second outlet channel 26 and the longitudinal axis of the second part 32 of the inlet channel 30 is less than 90 °, namely about 10 ° (the longitudinal axis of the second part 32 of the inlet channel 30 runs approximately horizontally in the embodiment shown here (cf. Fig. 8) and the longitudinal axis of the second outlet channel 26 runs approximately 10 ° to the horizontal).
  • the first part 31 of the inlet channel 30 runs along a longitudinal axis.
  • the angle between the longitudinal axis of the first part 31 of the inlet channel 30 and the longitudinal axis of the second part 32 of the inlet channel 30 is greater than 90 ° (cf. FIG. 8).
  • the angle between the longitudinal axis of the first outlet channel 23 and the longitudinal axis of the first part 31 of the inlet channel 30 is greater than 90 ° (cf. FIG. 8).
  • the angle between the longitudinal axis of the second outlet channel 26 and the longitudinal axis of the first part 31 of the inlet channel 30 is greater than 90 ° (cf. FIG. 8).
  • the coupling causes the inlet valve body 40 to be in the closed position when the outlet valve body 41 is in the open position.
  • the coupling is effected by a web 42.
  • the inlet valve body 40 is designed as a screen valve which has a screen 43 and the web 42.
  • the screen 43 is designed in the form of a circle, with a circular segment 44 at the top and a circular segment 44 removed at the bottom.
  • the outlet valve body 41 is designed as an umbrella valve with a circular screen 45 and the web 42.
  • the web 42 thus forms both part of the inlet valve body 40 and part of the outlet valve body 41.
  • the first part 31 of the inlet channel 30 has an inlet opening 34. This is provided on that part of the inlet volume 7 arranged in the valve plate 3. As can be seen in FIGS. 9 and 11, three inlet openings 34 are thus provided on the part of the inlet volume 7 arranged in the valve plate 3, namely for each first part 31 of the respective inlet channel 30 of the total of three valve arrangements 20.
  • the view in FIG. 11 shows only one valve arrangement 20 with inlet valve body 40 and outlet valve body 41.
  • the respective inlet valve body 40 and the respective outlet valve body 41 are not shown in order to guide the first outlet channel 23, of the second outlet channel 26 and the inlet channel 30 can be better represented.
  • the view in FIG. 9 shows only two valve arrangements 20 with inlet valve bodies 40.
  • the inlet valve body 40 is not shown in order to better illustrate the guidance of the first outlet channel 23, the second outlet channel 26 and the inlet channel 30 to be able to.
  • the fluid to be pumped is released from the inlet volume 7 through the inlet opening 34 into the first part 31 of the inlet channel 30 and from there into the second part 32 of the inlet channel 30 and leaves the inlet channel 30 via the opened outlet opening 33.
  • the fluid to be pumped cannot leave the pump chamber, since both the outlet opening 25 of the first outlet channel 23 and the outlet opening 28 of the second outlet channel 26 are closed by the outlet valve body 41. This fluid movement is indicated by the arrows provided in the lower part of FIG. 10 and the arrows shown in FIGS. 5 and 11.
  • FIGS. 5, 10, 11 depicting the suction movement of the fluid serve solely to illustrate the flow movement of the fluid in the respective suction movement of the respective valve arrangement 20. Since the suction movements - as stated above - of the respective valve arrangements 20 are offset in time the respective flow movement is of course delayed.
  • the form of representation selected for FIGS. 5, 10, 11 is not intended to show that the suction movements take place simultaneously (even if, for example, the arrows are shown for all valve arrangements in FIGS. 5 and 11).
  • the arrows only serve to represent the fluid movement during the respective suction movement, without wanting to indicate that these suction movements take place at the same time; of course, they are delayed. By means of the arrows provided there, FIG.
  • valve 10 shows, for example, that the lower valve arrangement 20 carries out a suction movement (fluid is drawn from the inlet volume 7 into the pump chamber), while the upper valve arrangement 20 carries out an ejection movement (fluid is discharged through the first outlet channel 23 and the second outlet channel 26 is pumped into the outlet volume 8.
  • the fluid to be pumped is pressed by the overpressure from the pump chamber through the inlet opening 24 of the first outlet channel 23 into the first outlet channel 23 and through the outlet opening 25 out of this into the outlet volume 8 and through the inlet opening 27 of the second outlet channel 26 into the second outlet channel 26 and pressed out of this through the outlet opening 28 into the outlet volume 8.
  • This fluid movement is indicated by the arrows provided in the upper part of FIG. 10.

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  • Check Valves (AREA)

Abstract

L'invention concerne un dispositif de clapet destiné à une pompe à membrane, le dispositif de clapet présentant un côté d'entrée et un côté de sortie. Un premier canal de sortie (23) amène d'un orifice d'entrée (24) agencé sur le côté d'entrée à un orifice de sortie (25) agencé sur le côté de sortie, et un second canal de sortie (26) amène d'un orifice d'entrée (27) agencé sur le côté d'entrée à un orifice de sortie (28) agencé sur le côté de sortie. Un canal d'entrée (30) présente une première pièce (31) et une seconde pièce (32), la seconde pièce (32) présentant un orifice de sortie (33) agencé sur le côté d'entrée, et la première pièce (31) formant un angle par rapport à la seconde pièce (32). Un corps de clapet d'entrée (40) est disposé sur l'orifice de sortie (33) de la seconde pièce (32) du canal d'entrée (30) et un premier corps de clapet de sortie (41) est disposé vers l'orifice de sortie (25) du premier canal de sortie (23). Un second corps de clapet de sortie ou également le premier corps de clapet de sortie (41) obturent ou libèrent l'orifice de sortie (28) du second canal de sortie (26).
EP20711561.9A 2019-03-13 2020-03-11 Dispositifs de clapet destinés à une pompe à membrane Pending EP3938655A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019106370.1A DE102019106370A1 (de) 2019-03-13 2019-03-13 Ventilanordnungen für eine Membranpumpe, Ventilkörper eines Ventils einer Membranpumpe, Ventilplatte einer Membranpumpe, Membranpumpe, Verfahren zum Betreiben einer Membranpumpe
PCT/EP2020/056574 WO2020182921A1 (fr) 2019-03-13 2020-03-11 Dispositifs de clapet destinés à une pompe à membrane

Publications (1)

Publication Number Publication Date
EP3938655A1 true EP3938655A1 (fr) 2022-01-19

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Application Number Title Priority Date Filing Date
EP20711561.9A Pending EP3938655A1 (fr) 2019-03-13 2020-03-11 Dispositifs de clapet destinés à une pompe à membrane

Country Status (6)

Country Link
US (1) US20220170560A1 (fr)
EP (1) EP3938655A1 (fr)
JP (1) JP7499265B2 (fr)
CN (1) CN113767222B (fr)
DE (1) DE102019106370A1 (fr)
WO (1) WO2020182921A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11933286B1 (en) * 2021-09-02 2024-03-19 Psg Germany Gmbh Diaphragm pumping

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JPH0642460A (ja) * 1992-07-20 1994-02-15 Tokico Ltd 往復動圧縮機
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Also Published As

Publication number Publication date
JP7499265B2 (ja) 2024-06-13
DE102019106370A1 (de) 2020-09-17
CN113767222B (zh) 2024-06-28
CN113767222A (zh) 2021-12-07
JP2022523559A (ja) 2022-04-25
WO2020182921A1 (fr) 2020-09-17
US20220170560A1 (en) 2022-06-02
WO2020182921A9 (fr) 2021-10-21

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