CN110671308A

CN110671308A - Diaphragm pump

Info

Publication number: CN110671308A
Application number: CN201911022166.2A
Authority: CN
Inventors: 潘刚
Original assignee: NINGBO JIAYIN ELECTRO MECHANICAL TECHNOLOGY Co Ltd
Current assignee: NINGBO JIAYIN ELECTRO MECHANICAL TECHNOLOGY Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-01-10

Abstract

The invention claims a diaphragm pump, including the core seat of the pump, the core set up relative to the core seat of the pump, the diaphragm that fixedly connects to the core and can cooperate with core seat of the said pump, offer water intake channel and water outlet passage on the core seat of the said pump, wherein the core seat of the said pump has water inflow check heads in the open position of the said water intake channel, there is water outlet check heads in the open position of the said water outlet passage; the pump core seat is provided with a water outlet groove at the position of the other opening of the water outlet channel, and the membrane is provided with a convex protrusion part which can be matched with the water outlet groove and is used for pushing the fluid in the water outlet groove to be discharged outwards from the water outlet channel. When the diaphragm pump works, secondary water pressing on the fluid can be realized by matching the protruding part with the water outlet groove, so that the water outlet pressure and the self-suction effect of the diaphragm pump during working are improved, and the stability of the flow control of the fluid during working of the diaphragm pump is enhanced.

Description

Diaphragm pump

Technical Field

The invention belongs to the technical field related to flow control, and particularly relates to a diaphragm pump.

Background

The flow rate of fluid is regulated when the diaphragm pump works by utilizing the pressure difference to suck the fluid into the diaphragm pump and then discharge the fluid. The diaphragm pump is characterized in that a diaphragm on the diaphragm pump is matched with a pump core seat to jointly form a sealed cavity, then the diaphragms are combined one by one, and the pressure in the sealed cavity is controlled, so that the flow control of fluid during the working of the diaphragm pump is realized.

At present, when a diaphragm on an existing diaphragm pump is matched with a pump core seat and fluid in a sealed cavity is discharged outwards from a water outlet channel on the pump core seat, one side end face, matched with the pump core seat, of the diaphragm is of a planar structure, and the movement of the diaphragm towards the pump core seat can realize one-time extrusion of the fluid in the sealed cavity.

The purpose of fluid flow regulation control is realized to foretell diaphragm pump, however only forms a sealed die cavity between this diaphragm pump during operation diaphragm and the pump core seat for diaphragm pump during operation, the diaphragm has certain limitation to the fluid pushing pressure in sealed die cavity, thereby causes that this diaphragm pump is holistic to go out water pressure little, and self priming force is weak, and this diaphragm pump complete machine during operation is poor to pressure control's stability moreover, leads to out the phenomenon that water is neglected to be neglected to a little easily.

Disclosure of Invention

In view of the above, it is necessary to provide a diaphragm pump to solve the technical problems in the prior art.

Specifically, the method comprises the following steps: a diaphragm pump comprises a pump core seat, a pump core arranged opposite to the pump core seat and a diaphragm fixedly connected to the pump core and capable of being matched with the pump core seat, wherein the pump core seat is provided with a water inlet channel and a water outlet channel; the pump core seat is provided with a water outlet groove at the position of the other opening of the water outlet channel, and the membrane is provided with a convex protrusion part which can be matched with the water outlet groove and is used for pushing the fluid in the water outlet groove to be discharged outwards from the water outlet channel.

As a preferable aspect of the present invention, the portion of the diaphragm connected to the pump core and the protruding portion are located on two opposite sides of the diaphragm.

As a preferable mode of the present invention, the protrusion is provided as a plunger in which the diaphragm is formed to protrude toward the pump core seat portion.

As a preferable scheme of the present invention, the diaphragm can drive the plunger to be inserted into the water outlet groove, and the plunger inserted into the water outlet groove is in clearance fit with a cavity wall of the water outlet groove.

As a preferable scheme of the present invention, a sealing portion is provided on the pump cartridge, a sealing engagement portion is provided on the diaphragm, and the engagement between the protruding portion and the water outlet groove can be sealed by the engagement between the sealing portion and the sealing engagement portion.

As a preferable aspect of the present invention, the sealing portion is a sealing convex ring provided on the outer periphery of the water outlet groove of the pump cartridge seat, and the sealing engagement portion is a sealing stopper provided on the outer periphery of the protruding portion of the diaphragm.

In a preferred embodiment of the present invention, the sealing bead is disposed to protrude outward in a direction toward the diaphragm with respect to the pump cartridge seat.

As a preferable scheme of the present invention, the water outlet channel is an inclined hole, and an interface of the water outlet channel communicated with the water outlet groove is disposed on a side cavity wall of the water outlet groove.

As a preferable scheme of the present invention, the diaphragm is matched with the pump core seat and forms a water inlet and outlet cavity, the diaphragm is partially bent in a direction away from the pump core seat and forms a bent portion, and a cavity formed by the bent portion is communicated with the water inlet and outlet cavity.

As a preferred scheme of the present invention, the diaphragm pump further includes a magnetism isolating tube, a magnet exciting coil sleeved on the magnetism isolating tube, a pump core spring disposed in the magnetism isolating tube and abutting against the pump core, and a pump body; the pump body with the magnetism-isolating pipe is connected fixedly with the mode of buckle connection, be used for with water inflow check head with it is spacing on the pump core seat to go out water check head.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

according to the diaphragm pump provided by the invention, through the reasonable structural arrangement between the water outlet groove on the pump core seat and the protruding part on the diaphragm, the diaphragm pump can realize secondary water pressing on fluid by matching the protruding part with the water outlet groove when working, so that the action of the water outlet pressure of the diaphragm pump when working is further improved, and meanwhile, the stability of the diaphragm pump for controlling the flow of the fluid when working is also enhanced.

Drawings

Fig. 1 is a sectional view of a diaphragm pump according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the diaphragm pump of FIG. 1 with the pump cartridge receptacle engaged with the diaphragm.

Fig. 3 is a cross-sectional view of a pump cartridge seat in the diaphragm pump of fig. 1.

Fig. 4 is a schematic view of the diaphragm pump of fig. 1 from another perspective.

Fig. 5 is a sectional view of a diaphragm in the diaphragm pump of fig. 1.

10, a pump core seat; 11. a water inlet channel; 12. a water outlet channel; 13. a water outlet groove; 14. a sealing part; 20. a membrane; 21. a protruding portion; 22. a seal-fit portion; 23. a bending section; 30. a pump core; 40. a magnetism isolating pipe; 50. a field coil; 60. a pump core spring; 70. a pump body; 100. a water inlet and outlet cavity; 101. water inlet check head; 102. the water outlet is stopped.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, the diaphragm pump claimed in the present invention includes a pump core base 10, a pump core 30 disposed opposite to the pump core base 10, a diaphragm 20 fixedly connected to the pump core 30 and capable of cooperating with the pump core base 10, a magnetism isolating tube 40, an excitation coil 50 sleeved on the magnetism isolating tube 40, a pump core spring 60 for providing a restoring force of the pump core 30, and a pump body 70. The pump core 40 can reciprocate relative to the pump core base 10 under the action of a magnetic force field formed after the excitation coil 50 is electrified and the elastic resetting action of the pump core spring 60, so that the purpose of controlling the flow of fluid during the operation of the diaphragm pump is achieved.

The pump core seat 10 is provided with a water inlet channel 11 and a water outlet channel 12, wherein the pump core seat 10 is provided with a water inlet check head 101 at the position of the opening at one end of the water inlet channel 11, and is provided with a water outlet check head 102 at the position of the opening at one end of the water outlet channel 12, so that the water inlet channel 11 and the water outlet channel 12 on the pump core seat 10 are communicated in a one-way mode.

The pump body 70 is fixedly connected with the magnetism isolating pipe 30 in a snap-fit connection manner, and is used for limiting the water inlet check head 101 and the water outlet check head 102 on the pump core seat 10, so that the connection and assembly of the water inlet check head 101 and the water outlet check head 102 on the pump core seat 10 are realized.

In this embodiment, the pump core seat 10 is provided with a water outlet groove 13 at a position of the other opening of the water outlet channel, the membrane 20 is formed with a protruding portion 21, and the protruding portion 21 can be matched with the water outlet groove 13 to push the fluid in the water outlet groove 13 to be discharged from the water outlet channel 12. That is to say, the diaphragm pump of the present embodiment is provided with a water outlet groove 13 in addition to the diaphragm 20 matching with the pump core seat 10 and forming the water inlet and outlet cavity 100, so that when the diaphragm pump of the present embodiment works, in the process that the diaphragm 20 moves toward the pump core seat 10, the diaphragm 20 first extrudes the fluid in the water inlet and outlet cavity 100, and then the protruding portion 21 on the diaphragm 20 extrudes the fluid in the water outlet groove 13, so as to realize the effect of secondary water pressing when the diaphragm pump works, and the water outlet pressure when the diaphragm pump works is large.

In the present embodiment, the portion of the diaphragm 20 connected to the pump cartridge 30 and the protrusion 21 are located on two opposite sides of the diaphragm 20. When the diaphragm pump of the present embodiment works, after the pump core 30 drives the diaphragm 20 to move towards the pump core seat 10 and realize the matching with the pump core seat 10, by using the characteristics of the whole material of the diaphragm 20, the pump core 30 can drive the deformation of the protruding portion 21 connected to the diaphragm 20 to drive the protruding portion 21 to match with the water outlet groove 13 on the pump core seat 10, so as to realize the secondary water pressing function of the diaphragm pump during working. That is, when the diaphragm pump of the present embodiment operates, the movement of the diaphragm 20 toward the pump cartridge holder 10 can be divided into two stages.

Specifically, the protruding portion 21 of the present embodiment is a plunger formed by the diaphragm 20 protruding toward the pump cartridge seat 10, and the diaphragm 20 can drive the plunger to be inserted into the water outlet groove 13, and push the fluid in the water outlet groove 13. It should be understood that the protruding portion 21 is not limited to the one shown in the drawings, and those skilled in the art can adopt the protruding portion 21 on the diaphragm 20 as a frustum-shaped structure or a cylindrical structure according to the use requirement, which will not be described herein.

Furthermore, when the diaphragm 20 drives the plunger to be inserted into the water outlet groove 13, the plunger inserted into the water outlet groove 13 can be in clearance fit with the cavity wall of the water outlet groove 13, so that the displacement of the plunger when pushing the fluid in the water outlet groove 13 when the plunger is matched with the water outlet groove 13 is improved, and the pressure of the outlet water when the diaphragm pump works is further improved.

In the present embodiment, the pump cartridge 10 is provided with a sealing portion 14, the diaphragm 20 is provided with a sealing engagement portion 22, and the engagement between the protruding portion 21 and the water outlet groove 13 can be sealed by the engagement between the sealing portion 14 and the sealing engagement portion 22. That is, when the protruding portion 21 on the diaphragm 20 is engaged with the water outlet groove 13 on the pump cartridge 10, the upper seal engaging portion 22 on the diaphragm 20 and the upper seal portion 14 on the pump cartridge 10 can be used for sealing, so that the fluid in the water outlet groove 13 can be completely discharged from the water outlet channel 12 by the pushing of the protruding portion 21 on the diaphragm, and thus, the problem that the water inlet check head 101 cannot close the water inlet channel 11 on the pump cartridge 10 is avoided. The membrane pump can overflow from the water inlet channel 11, so as to ensure the water outlet stability when the protruding part 21 and the water outlet groove 13 cooperate to discharge water during the operation of the membrane pump, and ensure the water outlet pressure.

Specifically, the sealing portion 14 is a sealing convex ring provided on the outer periphery of the water outlet groove 13 of the pump cartridge 10, and the sealing engagement portion 22 is a sealing stop provided on the outer periphery of the protruding portion 21 of the diaphragm 20. And when the diaphragm 20 moves towards the direction of the pump core seat 10, the sealing stop on the diaphragm 20 can be pressed against the sealing convex ring of the pump core seat 10, so that the sealing convex ring and the sealing stop are in sealing fit. It should be noted that, when the sealing stop on the membrane 20 abuts against the sealing flange of the pump cartridge seat 10, the membrane 20 discharges the fluid in the inlet and outlet cavity 100 through the outlet groove 13 and the outlet channel 12. It is to be understood that the sealing portion 14 and the seal engaging portion 22 are not limited to those shown in the drawings, and those skilled in the art may use the sealing portion 14 as a seal stopper and the seal engaging portion 22 as a seal retainer according to the use requirements.

The sealing convex ring is arranged to protrude outwards relative to the pump core base 10 towards the direction of the diaphragm 20, so that the sealing baffle table on the diaphragm 20 is matched with the sealing convex ring, and sealing of the water outlet groove 13 on the pump core base 10 is realized.

In this embodiment, the water outlet channel 12 is an inclined hole, and an interface of the water outlet channel 12 communicating with the water outlet groove 13 is disposed on a side cavity wall of the water outlet groove 13, so that the water outlet channel 12 can be disposed in the middle of the pump core seat 10 and is matched with the protruding portion 21 on the membrane 20, and the fluid is convenient to flow from the water outlet groove 13 to the water outlet channel 12 and is discharged outwards.

As a preferred scheme of the present invention, the diaphragm 20 is partially bent in a direction away from the pump core seat 10 and is formed with a bent portion 23, and a cavity formed by the bent portion 23 is communicated with the water inlet and outlet cavity 100, so as to expand the water storage capacity of the water inlet and outlet cavity 100, so that when the pump core 30 drives the diaphragm 20 to move in the direction away from the pump core seat 10, the vacuum degree of the water inlet and outlet cavity 100 formed by the diaphragm 20 and the pump core seat 10 is better, and further, the self-priming function of the diaphragm pump during operation is improved; and the structure of the bending part 23 on the diaphragm 20 is arranged, so that the pump core 30 drives the diaphragm 20, the acting force of the pump core 30 on the diaphragm 20 during driving is reduced, the power consumption of the diaphragm pump during working is reduced, and the service life is prolonged.

It should be noted that, the diaphragm pump claimed in the present application and the existing diaphragm pump are tested under the same conditions, and it is found that the water discharge pressure of the diaphragm pump claimed in the present application can be at least increased by 40%, the vacuum degree of the diaphragm pump can be at least increased by 45%, and the stability of the diaphragm pump can be at least increased by 10%.

In summary, the diaphragm pump provided by the invention can realize secondary water pressing on the fluid by matching the protruding part with the water outlet groove when the diaphragm pump works through reasonable structural arrangement between the water outlet groove on the pump core seat and the protruding part on the diaphragm, so that the water outlet pressure and the self-suction force of the diaphragm pump when the diaphragm pump works are improved, and meanwhile, the stability of the flow control of the fluid when the diaphragm pump works is also enhanced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A diaphragm pump comprises a pump core seat, a pump core arranged opposite to the pump core seat and a diaphragm fixedly connected to the pump core and capable of being matched with the pump core seat, wherein the pump core seat is provided with a water inlet channel and a water outlet channel; the method is characterized in that: the pump core seat is provided with a water outlet groove at the position of the other opening of the water outlet channel, and the membrane is provided with a convex protrusion part which can be matched with the water outlet groove and is used for pushing the fluid in the water outlet groove to be discharged outwards from the water outlet channel.

2. The diaphragm pump of claim 1 wherein: the part of the diaphragm connected with the pump core and the protruding part are arranged on two opposite sides of the diaphragm.

3. The diaphragm pump of claim 2 wherein: the protruding portion is provided as a plunger in which the diaphragm is protruded toward the pump core seat portion and formed.

4. The diaphragm pump of claim 3 wherein: the diaphragm can drive the plunger piston to be inserted into the water outlet groove, and the plunger piston inserted into the water outlet groove is in clearance fit with the cavity wall of the water outlet groove.

5. The diaphragm pump of claim 2 wherein: the pump core seat is provided with a sealing part, the diaphragm is provided with a sealing matching part, and the protruding part and the water outlet groove can be matched for sealing through the matching between the sealing part and the sealing matching part.

6. The diaphragm pump of claim 5 wherein: the sealing part is a sealing convex ring arranged on the periphery of the water outlet groove of the pump core seat, and the sealing matching part is a sealing baffle platform arranged on the periphery of the membrane on the periphery of the convex part.

7. The diaphragm pump of claim 6 wherein: the sealing convex ring is arranged in a protruding mode towards the direction of the diaphragm relative to the pump core seat.

8. The diaphragm pump of claim 2 wherein: the water outlet channel is provided with an inclined hole, and a connector communicated with the water outlet groove is arranged on the side cavity wall of the water outlet groove.

9. The diaphragm pump of claim 1 wherein: the diaphragm with pump core seat cooperation is formed with into business turn over water and is held the chamber, the diaphragm is towards deviating from the direction part of pump core seat is buckled and is formed with the kink, the cavity that the kink formed with business turn over water holds the chamber intercommunication.

10. The diaphragm pump of claim 1 wherein: the diaphragm pump also comprises a magnetism isolating pipe, a magnet exciting coil sleeved on the magnetism isolating pipe, a pump core spring arranged in the magnetism isolating pipe and abutted against the pump core, and a pump body; the pump body with the magnetism-isolating pipe is connected fixedly with the mode of buckle connection, be used for with water inflow check head with it is spacing on the pump core seat to go out water check head.