EP3812587B1 - Membranpumpe - Google Patents

Membranpumpe Download PDF

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Publication number
EP3812587B1
EP3812587B1 EP20020025.1A EP20020025A EP3812587B1 EP 3812587 B1 EP3812587 B1 EP 3812587B1 EP 20020025 A EP20020025 A EP 20020025A EP 3812587 B1 EP3812587 B1 EP 3812587B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
pump
core base
pump core
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20020025.1A
Other languages
English (en)
French (fr)
Other versions
EP3812587A1 (de
Inventor
Ding Yao Lu
Gang Pan
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.)
Ningbo Jiayin Electro Mechanical Technology Co Ltd
Original Assignee
Ningbo Jiayin Electro Mechanical Technology Co Ltd
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
Priority claimed from CN201911022166.2A external-priority patent/CN110671308A/zh
Priority claimed from CN201921814304.6U external-priority patent/CN211009037U/zh
Application filed by Ningbo Jiayin Electro Mechanical Technology Co Ltd filed Critical Ningbo Jiayin Electro Mechanical Technology Co Ltd
Publication of EP3812587A1 publication Critical patent/EP3812587A1/de
Application granted granted Critical
Publication of EP3812587B1 publication Critical patent/EP3812587B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • 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
    • F04B43/04—Pumps having electric drive
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the present disclosure relates to a technical field of flow control, in particular, to a diaphragm pump.
  • a diaphragm pump can be configured for adjusting a flow rate of a fluid by a pressure difference, so that the fluid can be suck into the diaphragm pump and then discharge.
  • the diaphragm pump can include a diaphragm and a pump core base, and a sealing chamber can be formed between the diaphragm and the pump core base. When the diaphragm vibrates, the pressure in the sealing chamber can be controlled to achieve controlling of the flow rate of the fluid.
  • an end surface of the diaphragm toward the pump core base can be flat, and a vibration of the diaphragm toward the pump core base can achieve a one-time pushing of the fluid in the sealing chamber.
  • CN 208 749 519 U discloses a pump including a pump body.
  • the pump body is provided with an inlet pipe section and an outlet pipe section for connecting to an external water circuit.
  • the pump body is provided with a connecting projection, and the inlet pipe section and the outlet pipe section are projecting outward relative to the connecting projection.
  • CN 208 749 519 U fails to disclose the distinguishing features in the characterizing part of claim 1.
  • the present disclosure provides a diaphragm pump, which can improve a pressure difference of a chamber between the pump core base and the diaphragm and its stability thereof.
  • a diaphragm pump can include a pump core base, a pump core opposite to the pump core base, and a diaphragm fixed to the pump core and configured for cooperating with the pump core base.
  • the pump core base can include a water inlet passage and a water outlet passage.
  • the pump core base further include an inlet check valve at an end of the water inlet passage and an outlet check valve at a first end of the water outlet passage.
  • the pump core base further includes a groove at a second end of the water outlet passage opposite to the first end.
  • the diaphragm include a convex portion cooperated with the groove which is configured to push fluid in the groove outward from the water outlet passage. The convex portion extends into the groove.
  • the convex portion is a plunger toward the pump core base.
  • the diaphragm is configured to drive the convex portion to insert into the groove until the convex portion is in clearance fit with the groove.
  • the pump core base includes a first sealing portion and the diaphragm includes a second sealing portion.
  • the first sealing portion cooperates with the second sealing portion to make a sealing effect between the convex portion and the groove.
  • first sealing portion is a sealing ring on an outer periphery of the groove and the second sealing portion is a sealing block at an outer periphery of the convex portion.
  • sealing ring is convexly arranged outward to the diaphragm.
  • the water outlet passage is inclined, and the second end of the water outlet passage is not completely covered by the convex portion when the convex portion enters into the groove and the water outlet passage communicates with the groove.
  • the diaphragm cooperates with the pump core base to form a water chamber.
  • the diaphragm includes a bending portion away from the pump core base. And a cavity is formed by the bending portion and communicates with the water chamber.
  • the diaphragm pump further include: a magnetic isolation tube; an excitation coil sleeved on the magnetic isolation tube; a spring disposed in the magnetic isolation tube and abutting against the pump core; and a pump body.
  • the pump body and the magnetic isolation tube are connected with each other, and both are configured to limit the inlet check valve and the outlet check valve on the pump core base.
  • the diaphragm pump has the following advantages.
  • the diaphragm includes the convex portion cooperated with the groove at the second end of the water outlet passage, which is configured to push fluid in the groove outward from the water outlet passage. That is, through the structural of the convex portion, the diaphragm pump can work to achieve a second pushing of the fluid. Thereby, the pressure of the outlet water can be increased and the stability of the pressure difference can be improved during the operation of the diaphragm pump.
  • an embodiment provides a diaphragm pump including a pump core base 10, a diaphragm 20, a pump core 30, a magnetic isolation tube 40, an excitation coil 50, a spring 60 and a pump body 70.
  • the pump core 30 can be located opposite to the pump core base 10.
  • the diaphragm 20 can be fixed to the pump core 30 and configured for cooperating with the pump core base 10.
  • the excitation coil 50 can be sleeved on the magnetic isolation tube 40.
  • the spring 60 can be configured for providing a reset force for the pump core 30.
  • the pump core 30 can perform a reciprocating motion relative to the pump core base 10 under a function of a magnetic field formed by the excitation coil 50 when the excitation coil 50 is energized and under the resetting force of the spring 60. Therefore, the diaphragm pump can control a flow rate of a fluid.
  • the pump core base 10 can include a water inlet passage 11 and a water outlet passage 12.
  • the pump core base 10 can further include an inlet check valve 101 at an end of the water inlet passage 11 and an outlet check valve 102 at a first end of the water outlet passage 12, so that the water inlet passage 11 and the water outlet passage 12 in the pump core base 10 can be one-directional (i.e., unidirectional) communicated.
  • the pump body 70 and the magnetic isolation tube 30 can be connected and fixed in a snap-connected manner, in order to limit the inlet check valve 101 and the outlet check valve 102 on the pump core base 10. In this way, the inlet check valve 101 and the outlet check valve 102 can be assembled on the pump core base 10.
  • the pump core base 10 can include a groove 13 at a second end of the water outlet passage 12 opposite to the first end.
  • the diaphragm 20 can include a convex portion 21, and the convex portion 21 can cooperate with the groove 13 to push the fluid in the groove 13 outward from the water outlet passage 12. That is, the diaphragm pump can include a water chamber 100 between the pump core base 10 and the diaphragm 20 and the groove 13 in the pump core base 10.
  • the diaphragm pump works, the diaphragm 20 will move toward the pump core base 10 and the diaphragm 20 will firstly push the fluid in the water chamber 100. Then, the convex portion 21 on the diaphragm 20 will further push the fluid in the groove 13 so as to improve the pressure of water.
  • the convex portion 21 can extend into the groove 13.
  • a portion of the diaphragm 20 that is connected to the pump core 30 is away from the convex portion 21.
  • the pump core 30 drives the diaphragm 20 to move toward the pump core base 10
  • the convex portion 21 will enter into the groove 13 of the pump core base 10 to achieve a lager pressure. That is, when the diaphragm pump is in operation, the movement of the diaphragm 20 toward the pump core base 10 can be divided into two stages: the first stage is water in the water cavity 100 can be pushed by the diaphragm 20; and the second stage is water in the groove 13 can be further pushed by the convex portion 21.
  • the convex portion 21 can be a plunger formed by the diaphragm 20 and partially protruding toward the pump core base 10.
  • the diaphragm 20 can drive the plunger to insert into the groove 13 and the fluid in the groove 13 will be pushed outward.
  • the convex portions 21 are not limited to the shape shown in the figure.
  • One in the art can design the convex portions 21 in a frustum or cylindrical shape if required.
  • the convex portion 21 can be in clearance fit with an inner wall of the groove 13 when the convex portion 21 is inserted into the groove 13. In this way, the fluid in the groove 13 can be pushed outward, thereby further increasing the flow rate of the fluid during the operation of the diaphragm pump.
  • the pump core base 10 can include a first sealing portion 14, and the diaphragm 20 can include a second sealing portion 22.
  • the first sealing portion 14 can cooperate with the second sealing portion 22 to make a sealing effect between the convex portion 21 and the groove 13. That is, when the convex portion 21 is pushed into the groove 13, the fluid in the groove 13 can be completely discharged from the water outlet passage 12, thereby avoiding reverse flows of water if the inlet check valve 101 is not completely closed. As a result, it ensures the stability and the pressure of the water outlet when the diaphragm pump is in operation.
  • the first sealing portion 14 can be a sealing ring on an outer periphery of the groove 13, and the second sealing portion 22 can be a sealing block at an outer periphery of the convex portion 21.
  • the second sealing portion 22 can abut against the first sealing portion 14 of the pump core base 10, so as to realize the sealing fit between the first sealing portion 14 and the second sealing portion 22. It should be noted that when the second sealing portion 22 of the diaphragm 20 abuts on the first sealing portion 14 of the pump core base 10, the fluid in the water chamber 100 and the groove 13 has been discharged outward through the water outlet passage 12.
  • first sealing portion 14 and the second sealing portion 22 are not limited to the shape shown in the figure.
  • the one in the art can design the shapes of the first sealing portion 14 and the second sealing portion 22 as required, for example, the first sealing portion 14 and the second sealing portion 22 can be exchanged.
  • the first sealing portion 14 can be protruded toward the diaphragm 20, so that the second sealing portion 22 of the diaphragm 20 can cooperate with the first sealing portion 14, realizing the sealing effect between the pump core base 10 and the diaphragm 20.
  • the water outlet passage 12 can be in inclined shape.
  • the second end of the water outlet passage 12 is not completely covered by the convex portion 21 even when the convex portion 21 enters into the groove 13, so that the water outlet passage 12 can communicate with the groove 13.
  • the fluid can flow from the groove 13 to the water outlet passage 12.
  • the diaphragm 20 can further include a bending portion 23 away from the pump core base 10, and a cavity can be formed by the bending portion 23 and communicates with the water chamber 100, so that water storage capacity of the water chamber 100 can be expanded.
  • a vacuum degree of the water cavity 100 may be better, thus improving the self-priming force of the diaphragm pump during operation.
  • the bending portion 23 of the diaphragm 20 will facilitate the driving of the diaphragm 20 by the pump core 30. In detail, it can reduce the force when the pump core 30 drives the diaphragm 20, thereby reducing the power consumption of the diaphragm pump during operation and extending the service life.
  • the diaphragm pump of the present disclosure tested under the same conditions can have a higher drainage pressure improved by at least 40%, a higher vacuum of the pump improved by at least 45%, and an enhanced stability of the diaphragm pump improved by at least 10%.
  • the diaphragm pump has the following advantages.
  • the diaphragm includes the convex portion 21 cooperated with the groove 13 at the second end of the water outlet passage 12, which is configured to push fluid in the groove 13 outward from the water outlet passage 12. That is, through the structural of the convex portion 21, the diaphragm pump can work to achieve a second pushing of the fluid.
  • the pressure of outlet water can be increased, self-priming force of the diaphragm pump can be enhanced at the same time, and the stability of the pressure difference can be improved during the operation of the diaphragm pump.

Landscapes

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

Claims (9)

  1. Membranpumpe umfassend einen Pumpenkernsockel (10), eine Pumpenkern (30) gegenüber dem Pumpenkernsockel (10) und eine Membran (20), die an dem Pumpenkern (30) fixiert und zum Zusammenwirken mit dem Pumpenkernsockel (10) konfiguriert ist,
    wobei der Pumpenkernsockel (10) einen Wassereinlasskanal (11) und einen Wasserauslasskanal (12) umfasst, wobei der Pumpenkernsockel (10) ferner ein Einlassrückschlagventil (101) an einem Ende des Wassereinlasskanals (11) und ein Auslassrückschlagventil (102) an einem ersten Ende des Wasserauslasskanals (12) umfasst,
    dadurch gekennzeichnet, dass:
    der Pumpenkernsockel (10) ferner eine Nut (13) an einem zweiten Ende des Wasserauslasskanals (12) gegenüber dem ersten Ende umfasst und
    die Membran (20) einen konvexen Abschnitt (21) umfasst, der mit der Nut (13) zusammenwirkt und dazu konfiguriert ist, Fluid in der Nut (13) aus dem Wasserauslasskanal (12) heraus zu drücken, wobei sich der konvexe Abschnitt (21) in die Nut (13) erstreckt.
  2. Membranpumpe nach Anspruch 1, wobei der konvexe Abschnitt (21) ein Kolben in Richtung des Pumpenkernsockels (10) ist.
  3. Membranpumpe nach Anspruch 1, wobei die Membran (20) dazu konfiguriert ist, den konvexen Abschnitt (21) anzutreiben, um ihn in die Nut (13) zu treiben, bis der konvexe Abschnitt (21) in Spielpassung mit der Nut (13) ist.
  4. Membranpumpe nach Anspruch 1, wobei der Pumpenkernsockel (10) einen ersten Abdichtungsabschnitt (14) umfasst, die Membran (20) einen zweiten Abdichtungsabschnitt (22) umfasst und der erste Abdichtungsabschnitt (14) mit dem zweiten Abdichtungsabschnitt (22) zusammenwirkt, um eine abdichtende Wirkung zwischen dem konvexen Abschnitt (21) und der Nut (13) zu erzielen.
  5. Membranpumpe nach Anspruch 4, wobei der erste Abdichtungsabschnitt (14) ein Dichtungsring an einem Außenumfang der Nut (13) ist und der zweite Abdichtungsabschnitt (22) ein Dichtungsblock an einem Außenumfang des konvexen Abschnitts (21) ist.
  6. Membranpumpe nach Anspruch 5, wobei der Dichtungsring konvex außerhalb der Membran (20) angeordnet ist.
  7. Membranpumpe nach Anspruch 1, wobei der Wasserauslasskanal (12) geneigt ist und das zweite Ende des Wasserauslasskanals (12) nicht vollständig durch den konvexen Abschnitt (21) bedeckt ist und der Wasserauslasskanal (12) mit der Nut (13) in Verbindung steht.
  8. Membranpumpe nach Anspruch 1, wobei die Membran (20) mit dem Pumpenkernsockel (10) zusammenwirkt, um eine Wasserkammer (100) zu bilden, wobei die Membran (20) einen Biegungsabschnitt (23) entfernt von dem Pumpenkernsockel (10) umfasst und durch den Biegungsabschnitt (23) ein Hohlraum gebildet ist, der mit der Wasserkammer (100) in Verbindung steht.
  9. Membranpumpe nach Anspruch 1, wobei die Membranpumpe ferner umfasst:
    eine magnetisch isolierte Röhre (40);
    eine Erregungsspule (50), die auf die magnetisch isolierte Röhre (40) gesetzt ist;
    eine Feder (60), die in der magnetisch isolierten Röhre (40) angeordnet ist und an dem Pumpenkern (30) anliegt; und
    einen Pumpenkörper (70),
    wobei der Pumpenkörper (70) und die magnetisch isolierte Röhre (40) miteinander verbunden sind und beide dazu konfiguriert sind, das Einlassrückschlagventil (101) und das Auslassrückschlagventil (102) an dem Pumpenkernsockel (10) zu begrenzen.
EP20020025.1A 2019-10-25 2020-01-17 Membranpumpe Active EP3812587B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911022166.2A CN110671308A (zh) 2019-10-25 2019-10-25 膜片泵
CN201921814304.6U CN211009037U (zh) 2019-10-25 2019-10-25 膜片泵

Publications (2)

Publication Number Publication Date
EP3812587A1 EP3812587A1 (de) 2021-04-28
EP3812587B1 true EP3812587B1 (de) 2023-12-13

Family

ID=69185305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020025.1A Active EP3812587B1 (de) 2019-10-25 2020-01-17 Membranpumpe

Country Status (1)

Country Link
EP (1) EP3812587B1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205542579U (zh) * 2016-04-14 2016-08-31 温岭市环力电器有限公司 一种水泵压力控制器
CN206723031U (zh) * 2017-05-16 2017-12-08 宁波佳音机电科技股份有限公司 一种小型电磁泵
CN208749519U (zh) * 2018-08-21 2019-04-16 宁波佳音机电科技股份有限公司 泵体及其电磁膜片泵

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