CN209800216U

CN209800216U - double-head diaphragm pump

Info

Publication number: CN209800216U
Application number: CN201920645658.6U
Authority: CN
Inventors: 杨军
Original assignee: Shenzhen Bowei Kesi Technology Co ltd
Current assignee: Shenzhen Bowei Kesi Technology Co ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2019-12-17
Anticipated expiration: 2029-04-30

Abstract

A double-head diaphragm pump relates to the technical field of diaphragm pumps. It includes: a main housing having a receiving cavity therein; the end cover is arranged on the main shell and fixedly assembled with the main shell; the diaphragm piece is arranged between the main shell and the end cover, encloses the end cover into a cavity for accommodating materials, and is used for changing the volume of the cavity through self deformation so as to realize material inlet and outlet; and the driving component is arranged on one side of the main shell, is detachably assembled with the main shell, is provided with a driving end in the accommodating cavity, is assembled with the diaphragm piece, and is used for driving the diaphragm piece to generate elastic deformation so as to change the volume of the cavity. Adopt above-mentioned technical scheme's double-end diaphragm pump not only has a plurality of diaphragm cavitys, can control the flow business turn over more accurately moreover and guarantee the uniformity of the volume of advancing and discharging, have the volume of business turn over uniformity height, the leakproofness good, the noise is little, stability is good, long service life, the big advantage of flow.

Description

Double-head diaphragm pump

Technical Field

The utility model relates to a diaphragm pump technical field, concretely relates to double-end diaphragm pump.

background

The micro diaphragm pump is a micro air pump or a liquid pump, and is provided with an air suction nozzle and an air exhaust nozzle which are arranged one by one, the diaphragm in the pump is made to do reciprocating motion through a mechanical device in the pump, vacuum or negative pressure can be continuously formed at an inlet, and micro positive pressure is formed at the air exhaust nozzle; the working medium is mainly gas or fluid, and the small-size instrument is widely applied to coffee machines, beer machines, blood pressure machines, water purifiers and the like.

The existing miniature diaphragm pump generally adopts an eccentric wheel with a swing rod and a ball structure, so that the diaphragm deforms in the vertical direction, the volume of the diaphragm is changed, the pressure inside the diaphragm is changed, and gas or fluid in the diaphragm can enter and exit.

the adoption of the structure has the following disadvantages: when the micro diaphragm pump works, the balls rub with the oscillating bar for a long time, so that the oscillating bar or the balls are easily seriously abraded, and the oscillating bar is easily deformed because the diaphragm is deformed in the vertical direction, so that the diaphragm of the micro diaphragm pump is easily deformed to different degrees by adopting an eccentric wheel plus the oscillating bar and ball structure, and the flow consistency of the micro diaphragm pump is difficult to ensure; meanwhile, the existing diaphragm pump is only provided with one diaphragm cavity, so that the flow of the inlet and the outlet of the diaphragm pump is small, and therefore, the improvement is needed.

SUMMERY OF THE UTILITY MODEL

an object of the utility model is to prior art's defect and not enough, provide a double-end diaphragm pump, it not only has a plurality of diaphragm cavity, can control the flow business turn over more accurately moreover and guarantee the uniformity of the volume of advancing, has that the volume of business turn over uniformity is high, the leakproofness is good, the noise is little, stability is good, long service life, the big advantage of flow.

in order to achieve the above object, the utility model adopts the following technical scheme: a dual head diaphragm pump comprising: a main housing having a receiving cavity therein; the end cover is arranged on the main shell and fixedly assembled with the main shell; the diaphragm piece is arranged between the main shell and the end cover, encloses the end cover into a cavity for accommodating materials, and is used for changing the volume of the cavity through self deformation so as to realize material inlet and outlet; and the driving component is arranged on one side of the main shell, is detachably assembled with the main shell, is provided with a driving end in the accommodating cavity, is assembled with the diaphragm piece, and is used for driving the diaphragm piece to generate elastic deformation so as to change the volume of the cavity.

The main case includes: the shell body is provided with a feeding nozzle which is arranged on one side of the shell body far away from the driving assembly, and a discharging nozzle which is arranged on one side of the shell body far away from the driving assembly; the main shell is provided with a feeding channel and a discharging channel, the feeding channel is used for communicating the cavity with the feeding nozzle, and the discharging channel is used for communicating the cavity with the discharging nozzle.

the end cover is provided with a cavity, a feed inlet and a discharge port, the cavity is used for accommodating materials, the feed inlet is used for communicating the feed channel with the cavity, and the discharge port is used for communicating the discharge channel with the cavity.

the diaphragm member includes; a diaphragm body which forms a cavity with the cavity in an enclosing manner; the discharging one-way valve is arranged on the diaphragm body, is positioned between the discharging port and the discharging channel and is used for controlling the discharging of the materials in the cavity; and the feeding one-way valve is arranged on the diaphragm body, is positioned between the feeding hole and the feeding channel and is used for controlling the material in the cavity to enter.

the periphery of the concave cavity is provided with annular grooves, the diaphragm body is provided with annular convex blocks, and when the diaphragm piece is assembled with the end cover, the convex blocks are matched with the annular grooves to prevent the material in the cavity from leaking.

the number of the end covers and the membrane pieces is at least two.

The two end covers are respectively assembled with the two end faces parallel to the main shell.

The drive assembly includes: a drive motor; the mounting block is assembled on one side of the power output shaft of the driving motor, and a mounting hole for accommodating the power output shaft of the driving motor is formed in the mounting block; the eccentric wheel is assembled on a power output shaft of the driving motor and can synchronously rotate along with the power output shaft, and an eccentric rod is arranged on the eccentric wheel; the driving block is arranged on one side of the eccentric rod, far away from the driving motor, fixedly assembled with the diaphragm piece and used for driving the diaphragm piece to generate elastic deformation; and the transmission part is assembled on the eccentric rod, is positioned between the eccentric rod and the driving block, can synchronously move along with the eccentric rod to drive the driving block to do eccentric motion and has a wear-resisting effect.

The driving block is provided with a kidney-shaped groove, the eccentric rod and the transmission piece are both arranged in the kidney-shaped groove, and when the eccentric rod moves, the transmission piece drives the driving block to move by extruding the inner wall of the kidney-shaped groove.

The diaphragm piece is provided with a mounting hole, one side of the driving block, which is close to the diaphragm piece, is provided with a mounting column, and the mounting column is used for being spliced with the mounting hole so as to realize the assembly of the diaphragm piece and the driving block.

After the technical scheme is adopted, the utility model discloses beneficial effect does: when the double-head diaphragm pump is used, the motor is started firstly, so that the driving motor drives the eccentric wheel and the eccentric rod to rotate, and then the eccentric rod drives the driving piece to move, so that the driving piece is driven by the driving piece to move; because the diaphragm piece all is provided with two with the end cover for by the pump body cavity be provided with two, when the drive block was close to one of them cavity, this cavity volume of drive reduced, thereby made the material in this cavity discharge from the ejection of compact mouth, at this moment, the volume increase of another cavity, thereby made this another cavity pass through the feed nozzle and extract outside material, when the drive block was close to another cavity wherein then the material business turn over is opposite just. The double-head diaphragm pump arranged in the way not only can improve the utilization rate of the power of the driving motor and ensure the consistent inlet and outlet amount of the diaphragm pump, but also can greatly improve the flow rate of the diaphragm pump; meanwhile, the diaphragm member is driven by the transmission member and the driving block, and the transmission member has a wear-resistant effect, so that the service life of the double-head diaphragm pump is effectively ensured; in addition, the driving block passes through the joint assembly with diaphragm spare for the driving block has the effect of push-and-pull to diaphragm spare at the in-process of motion, thereby has effectively avoided causing the phenomenon of diaphragm pump damage because the diaphragm cavity is shriveled, has guaranteed the life of diaphragm pump, has the advantage that the business turn over volume uniformity is high, the leakproofness is good, the noise is little, stability is good, long service life, flow are big.

Drawings

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic overall structure diagram of the first embodiment;

FIG. 2 is an exploded view of the first embodiment;

FIG. 3 is a top view corresponding to FIG. 1;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic structural view of an end cap according to a first embodiment;

FIG. 6 is a schematic view of a septum of an embodiment;

FIG. 7 is a schematic view showing the overall structure of the second embodiment;

FIG. 8 is an exploded view of the second embodiment;

FIG. 9 is a schematic structural view of an end cap according to a second embodiment;

FIG. 10 is a schematic view of a septum of an embodiment;

FIG. 11 is a schematic view showing the overall structure of the third embodiment;

FIG. 12 is an exploded view of the third embodiment;

FIG. 13 is a top view corresponding to FIG. 11;

Fig. 14 is a sectional view taken along line B-B of fig. 13.

description of reference numerals: 1. a main housing; 2. an end cap; 3. a diaphragm member; 4. a drive assembly; 5. an accommodating chamber; 6. fastening a bolt; 7. a cavity; 8. a housing body; 9. a feed nozzle; 10. a discharging nozzle; 11. a feed channel; 12. a discharge channel; 13. a concave cavity; 14. a feed inlet; 15. a discharge port; 16. a septum body; 17. a discharge one-way valve; 18. a feed check valve; 19. inserting a block; 20. a slot; 21. an annular groove; 22. an annular projection; 23. a drive motor; 24. mounting blocks; 25. an eccentric wheel; 26. an eccentric rod; 27. a drive block; 28. a transmission member; 29. an installation port; 30. mounting a column; 31. mounting a disc; 32. a feed chute; 33. a feed port.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment as required without making a contribution, but all the embodiments are protected by the patent law within the scope of the claims of the present invention.

The first embodiment is as follows: the present embodiment relates to a double-headed diaphragm pump, as shown in fig. 1 and 2, comprising: main housing 1, end cap 2, diaphragm member 3 and drive assembly 4.

As shown in fig. 1 to 6, the main casing 1 has a receiving chamber 5 therein. The end cover 2 is arranged on the main shell 1, and the end cover 2 and the main shell 1 are fixed through fastening bolts 6. The diaphragm member 3 is clamped and fixed between the end cover 2 and the main shell 1 through the fixed assembly of the end cover 2 and the main shell 1. The diaphragm 3 and the end cover 2 enclose a cavity 7 for containing materials. The diaphragm member 3 is used for changing the volume of the cavity 7 through self deformation, so that the material can enter and exit. The driving component 4 is arranged on one side of the main shell 1 and is detachably assembled with the main shell 1. The drive end of the drive assembly 4 is received in the receiving cavity 5 and assembled with the diaphragm member 3. The driving assembly 4 is used for driving the diaphragm member 3 to elastically deform so as to change the volume of the cavity 7.

As shown in fig. 1 to 6, the main casing 1 includes: a shell body 8, a feed nozzle 9 and a discharge nozzle 10. The feed nozzle 9 and the discharge nozzle 10 are both arranged on the side of the shell body 8 away from the driving component 4. A feeding channel 11 and a discharging channel 12 are arranged on the main shell 1, the feeding channel 11 is used for communicating the cavity 7 with the feeding nozzle 9, and the discharging channel 12 is used for communicating the cavity 7 with the discharging nozzle 10.

As shown in fig. 1-6, the number of the end covers 2 is at least two, and the end covers 2 are provided with a cavity 13, a feed inlet 14 and a discharge outlet 15. The cavity 13 is adapted to cooperate with the diaphragm member 3 to form the cavity 7 to receive the material. The feed inlet 14 is used for communicating the feed channel 11 with the cavity 13, and the discharge outlet 15 is used for communicating the discharge channel 12 with the cavity 13.

as shown in fig. 1 to 6, the number of the diaphragm members 3 is at least two, and the diaphragm member 3 includes: a diaphragm body 16, a discharge check valve 17 and a feed check valve 18. The diaphragm body 16 and the cavity 13 enclose a cavity 7. The discharging one-way valve 17 is arranged on the diaphragm body 16 and is positioned between the discharging hole 15 and the discharging channel 12. The discharging one-way valve 17 is used for controlling the discharging of the materials in the cavity 7. A feed check valve 18 is disposed on the diaphragm body 16 between the feed port 14 and the feed channel 11. The feeding one-way valve 18 is used for controlling the material in the cavity 7 to enter.

As shown in fig. 1-6, in the present embodiment, the feed nozzle 9 and the discharge nozzle 10 are integrally formed with the housing body 8. The lower extreme of shell body 8 is provided with the draw-in groove, and the draw-in groove is used for fixing a position with drive assembly 4 joint. The two end covers 2 and the diaphragm piece 3 are arranged, and the two end covers 2 are respectively assembled with two end faces parallel to the shell body 8. All be provided with the mounting groove on the terminal surface of the 8 left and right sides of shell body, the mounting groove is used for installing diaphragm spare 3. The feed inlet 14 and the discharge outlet 15 are both arranged at the upper end of the end cover 2, the lower end of the end cover 2 is provided with two insertion blocks 19, and the shell body 8 is provided with a slot 20. When the end cover 2 is assembled with the shell body 8, the assembly of the end cover 2 can be positioned through the matching of the insertion block 19 and the insertion groove 20, so that the installation of the end cover 2 is facilitated. The periphery of the cavity 13 is provided with an annular groove 21, the diaphragm body 16 is provided with an annular convex block 22, and when the diaphragm piece 3 is assembled with the end cover 2, the convex block is matched with the annular groove 21 to prevent the material in the cavity 7 from leaking. The feeding one-way valve 18 and the discharging one-way valve 17 are integrally formed with the diaphragm body 16.

As shown in fig. 1-6, the drive assembly 4 includes: a drive motor 23, a mounting block 24, an eccentric 25, an eccentric rod 26, a drive block 27 and a transmission member 28. The mounting block 24 is assembled on one side of the power output shaft of the driving motor 23, and the mounting block 24 is provided with a mounting hole for accommodating the power output shaft of the driving motor 23. The eccentric wheel 25 is mounted on the power output shaft of the driving motor 23 and can rotate synchronously with the power output shaft. An eccentric rod 26 is arranged on the eccentric wheel 25 in a protruding mode, and a step portion is arranged at the upper end of the eccentric rod 26. The transmission member 28 can move synchronously with the eccentric rod 26 to drive the driving block 27 to move eccentrically, and the transmission member 28 has a wear-resistant effect, so that the wear of the transmission member 28 is effectively avoided. The central part of the driving block 27 is sleeved on the eccentric rod 26 and the transmission piece 28, and both ends of the driving block 27 are inserted and assembled with the diaphragm piece 3. The driving block 27 is used for driving the diaphragm member 3 to be elastically deformed.

in this embodiment, the central portion of the driving block 27 is provided with a kidney-shaped groove, and the eccentric rod 26 and the transmission member 28 are installed in the kidney-shaped groove. When the eccentric rod 26 is moved, the transmission member 28 drives the driving block 27 to move by pressing the inner wall of the kidney-shaped groove. The diaphragm member 3 is provided with a mounting opening 29, one side of the driving block 27 close to the diaphragm member 3 is provided with a mounting column 30, and the mounting column 30 is used for being inserted into the mounting opening 29 so as to assemble the diaphragm member 3 and the driving block 27. The mounting block 24 is fixedly assembled with the driving motor 23 through a fastening bolt 6. When the main shell 1 is assembled with the end cover 2, fastening screws penetrate through threaded holes in the end cover 2, threaded holes in the main shell 1 and threaded holes in the mounting blocks 24 to be fixedly assembled, and therefore the driving assembly 4 is assembled with the main shell 1.

the working principle of the utility model is as follows: when the double-head diaphragm pump is used, the motor is started firstly, so that the driving motor 23 drives the eccentric wheel 25 and the eccentric rod 26 to rotate, and then the eccentric rod 26 drives the transmission piece 28 to move, so that the transmission piece 28 drives the driving block 27 to move; because the diaphragm member 3 and the end cover 2 are both provided with two, so that the cavity 7 in the pump body is provided with two, when the driving block 27 approaches to one of the cavities 7, the volume of the cavity 7 is driven to be reduced, so that the material in the cavity 7 is discharged from the discharging nozzle 10, at the moment, the volume of the other cavity 7 is increased, so that the other cavity 7 extracts the external material through the feeding nozzle 9, and when the driving block 27 approaches to the other cavity 7, the material inlet and outlet are opposite. The double-head diaphragm pump arranged in this way not only can improve the utilization rate of the power of the driving motor 23 and ensure the consistent inlet and outlet amount of the diaphragm pump, but also can greatly improve the flow rate of the diaphragm pump; meanwhile, the transmission piece 28 and the driving block 27 drive the diaphragm piece 3, and the transmission piece 28 has a wear-resistant effect, so that the service life of the double-head diaphragm pump is effectively ensured; in addition, the driving block 27 is assembled with the diaphragm piece 3 through clamping, so that the driving block 27 has the push-and-pull effect on the diaphragm piece 3 in the moving process, the phenomenon that the diaphragm pump is damaged due to the fact that the diaphragm cavity 7 is crushed is effectively avoided, the service life of the diaphragm pump is guaranteed, and the diaphragm pump has the advantages of being high in inlet and outlet quantity consistency, good in sealing performance, low in noise, good in stability, long in service life and large in flow.

Example two: the present embodiment differs from the first embodiment mainly in that, as shown in fig. 7 to 10, in the present embodiment, the accommodating chamber 5 in the main casing 1 communicates with the feeding nozzle 9, and the material entering from the feeding nozzle 9 is first stored in the accommodating chamber 5. The driving block 27 is provided with a mounting disc 31, the mounting disc 31 is assembled with the diaphragm member 3 in a sleeved mode, and the mounting disc 31 is clamped with the mounting disc 31 through the elasticity of the diaphragm member 3. The mounting plate 31 is provided with a feeding groove 32, the diaphragm member 3 is provided with a feeding hole 33 at a position corresponding to the feeding groove 32, and the feeding groove 32 is used for guiding the material in the accommodating cavity 5 into the cavity 7. Meanwhile, a feed check valve 18 is provided between the feed hole 33 and the mounting plate 31.

When the driving block 27 drives the cavity 7 to increase in volume, the material contained in the containing cavity 5 impacts the feeding check valve 18 through the feeding chute 32, so that the feeding check valve 18 is opened, and the material enters the containing cavity 5 from the feeding hole 33. The volume of the cavity 7 is reduced by the driving block 27, so that the feeding one-way valve 18 is closed, the discharging one-way valve 17 is opened, and the material enters the discharging channel 12 from the discharging one-way valve 17 and is discharged from the discharging nozzle 10, so that the function of a diaphragm pump is realized.

Example three: the present embodiment differs from the first embodiment mainly in that, as shown in fig. 11-14, in the present embodiment, two feeding nozzles 9 and one discharging nozzle 10 are provided on the main casing 1, and two feeding channels 11 are provided, one of the two feeding nozzles 9 is used for liquid inlet, and the other is used for gas inlet, so that liquid-gas mixture is discharged from the discharging nozzle 10.

Example four: the difference between this embodiment and the third embodiment is mainly that, in this embodiment, two feeding nozzles 9 and two discharging nozzles 10 are provided on the main casing 1, and at the same time, two feeding channels 11 and two discharging channels 12 are provided. The double-head diaphragm pump arranged in this way not only can extract gas and liquid at the same time, but also can discharge the gas and the liquid at the same time without mutual interference.

The above description is only for the purpose of illustration and not limitation, and other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention should be covered by the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. a double-ended diaphragm pump, comprising:

A main shell (1) having a housing cavity (5) therein;

The end cover (2) is arranged on the main shell (1) and fixedly assembled with the main shell (1);

the diaphragm component (3) is arranged between the main shell (1) and the end cover (2), encloses the end cover (2) into a cavity (7) for accommodating materials, and is used for changing the volume of the cavity (7) through self deformation to realize material inlet and outlet; and the number of the first and second groups,

The driving component (4) is arranged on one side of the main shell (1), is detachably assembled with the main shell (1), has a driving end accommodated in the accommodating cavity (5), is assembled with the diaphragm piece (3), and is used for driving the diaphragm piece (3) to generate elastic deformation so as to change the volume of the cavity (7).

2. A double-ended diaphragm pump according to claim 1, wherein the main housing (1) comprises:

A shell body (8),

A feed nozzle (9) arranged on the housing body (8) on a side remote from the drive assembly (4), and,

A discharge nozzle (10) arranged on one side of the shell body (8) far away from the driving component (4);

the main shell (1) is provided with a feeding channel (11) and a discharging channel (12), the feeding channel (11) is used for communicating the cavity (7) with the feeding nozzle (9), and the discharging channel (12) is used for communicating the cavity (7) with the discharging nozzle (10).

3. the double-ended diaphragm pump according to claim 2, wherein a cavity (13), a feed inlet (14) and a discharge outlet (15) are arranged on the end cover (2), the cavity (13) is used for containing materials, the feed inlet (14) is used for communicating the feed channel (11) with the cavity (13), and the discharge outlet (15) is used for communicating the discharge channel (12) with the cavity (13).

4. A double-ended diaphragm pump according to claim 3, characterized in that the diaphragm member (3) comprises;

a diaphragm body (16) which is surrounded with the cavity (13) and is a cavity (7);

The discharging one-way valve (17) is arranged on the diaphragm body (16), is positioned between the discharging hole (15) and the discharging channel (12) and is used for controlling the discharging of the materials in the cavity (7); and the number of the first and second groups,

and the feeding one-way valve (18) is arranged on the diaphragm body (16), is positioned between the feeding hole (14) and the feeding channel (11) and is used for controlling the material in the cavity (7) to enter.

5. A double-ended diaphragm pump according to claim 4, wherein the cavity (13) is provided with an annular groove (21) around it, and the diaphragm body (16) is provided with an annular projection (22) which cooperates with the annular groove (21) when the diaphragm member (3) is assembled with the end cap (2) to prevent leakage of the material in the cavity (7).

6. A double-ended diaphragm pump according to claim 5, characterized in that the number of end caps (2) and membrane members (3) is at least two each.

7. A double-ended diaphragm pump according to claim 6, characterized in that the end caps (2) and the diaphragm member (3) are provided in two, the two end caps (2) being fitted with two end faces parallel to the main housing (1), respectively.

8. A double-ended diaphragm pump according to any of claims 1-7, wherein the drive assembly (4) comprises:

A drive motor (23);

The mounting block (24) is assembled on one side of the power output shaft of the driving motor (23), and a mounting hole for accommodating the power output shaft of the driving motor (23) is formed in the mounting block (24);

an eccentric wheel (25) which is assembled on a power output shaft of the driving motor (23) and can synchronously rotate along with the power output shaft, wherein an eccentric rod (26) is arranged on the eccentric wheel (25);

the driving block (27) is arranged on one side of the eccentric rod (26) far away from the driving motor (23), is fixedly assembled with the diaphragm piece (3), and is used for driving the diaphragm piece (3) to generate elastic deformation; and the number of the first and second groups,

And the transmission piece (28) is assembled on the eccentric rod (26), is positioned between the eccentric rod (26) and the driving block (27), can synchronously move along with the eccentric rod (26) to drive the driving block (27) to do eccentric motion and has a wear-resisting effect.

9. a double-ended diaphragm pump according to claim 8, wherein the drive block (27) is provided with a kidney groove, the eccentric rod (26) and the transmission member (28) are mounted in the kidney groove, and the transmission member (28) drives the drive block (27) to move by pressing against the inner wall of the kidney groove when the eccentric rod (26) moves.

10. A double-ended diaphragm pump according to claim 9, characterized in that the diaphragm member (3) is provided with a mounting opening (29), and the driving block (27) is provided with a mounting post (30) on a side thereof adjacent to the diaphragm member (3), the mounting post (30) being adapted to be inserted into the mounting opening (29) to enable the assembly of the diaphragm member (3) with the driving block (27).