CN213478623U

CN213478623U - High-efficiency wear-resistant diaphragm pump

Info

Publication number: CN213478623U
Application number: CN202021912058.0U
Authority: CN
Inventors: 蒋茂发
Original assignee: Shenzhen Bowei Kesi Technology Co ltd
Current assignee: Shenzhen Bowei Kesi Technology Co ltd
Priority date: 2020-04-08
Filing date: 2020-09-03
Publication date: 2021-06-18
Anticipated expiration: 2030-09-03
Also published as: CN213478624U; CN213016722U

Abstract

A high-efficiency wear-resistant diaphragm pump relates to the technical field of diaphragm pumps. The diaphragm pump includes: driving motor, casing, diaphragm spare, eccentric wheel, pendulum rod, feed nozzle and ejection of compact mouth, the pendulum rod with be provided with wearing parts between the eccentric wheel, wearing parts be used for with the pendulum rod with contact friction between the eccentric wheel converts into wearing parts internal friction, in order to prevent the eccentric wheel or the pendulum rod wearing and tearing promote the life of diaphragm pump. Adopt above-mentioned technical scheme's diaphragm pump, it is through setting up the wearing parts between pendulum rod and eccentric wheel, converts the friction between pendulum rod and the eccentric wheel into the inside friction of wearing parts, and the diaphragm pump that sets up like this has high temperature resistant nature, and the wearability is strong, and pendulum rod and eccentric wheel zero wear, and comprehensive properties is strong, long service life's advantage.

Description

High-efficiency wear-resistant diaphragm pump

Technical Field

The utility model relates to a diaphragm pump technical field, concretely relates to high-efficient wear-resisting diaphragm pump.

Background

The diaphragm pump mainly produces its inside volume through rubber leather cup circulation operation and changes to the realization is to the extraction of material, and wherein, the material of diaphragm pump extraction is mostly liquid. The diaphragm pump generally drives an eccentric wheel to rotate through a motor, then drives a swing rod to move through the eccentric wheel, and finally drives a rubber cup to move through the swing rod, so that liquid pumping is realized.

In the existing diaphragm pump, a swing rod is in direct contact with an eccentric wheel. The end face of the eccentric wheel close to one side of the swing rod is usually an inclined face, and the end face of the swing rod, which is in direct contact with the eccentric wheel, mainly comprises an end face A in contact with the inclined face and an end face B perpendicular to the inclined face. When the end surface A is abraded, the height of the oscillating rod is changed, the faster the abrasion is, the larger the change is, the smaller the flow and the pressure are, and the service life of the micro pump is greatly shortened due to the fact that the abrasion is large and the function of the micro pump is invalid; when the end face B is abraded, the radial fit of the oscillating bar is changed, the faster the abrasion is, the more loose the fit between the oscillating bar and the eccentric wheel is, the uneven stress of the diaphragm part is easily caused, the accuracy of flow inlet and outlet of the diaphragm pump is influenced, and the diaphragm pump is made to fail. Therefore, the requirement for stabilizing the swing link can be met only by reducing or preventing the abrasion at the end surfaces A and B of the swing link.

However, most of the existing micropumps are provided with a steel shaft between the oscillating bar and the eccentric wheel, and friction between the steel shaft and the eccentric wheel is utilized to further reduce or avoid the friction of the oscillating bar at the end surface B. Meanwhile, a friction piece is arranged at the end surface A of the swing rod, which is in contact with the eccentric wheel, and the friction piece is in contact with the eccentric wheel, so that the abrasion of the swing rod at the end surface A is reduced or avoided. Thereby meeting the requirements and prolonging the service life of the micro pump.

Although the method can meet the use requirements to a certain extent, the method also has a large defect, and because the contact area between the steel shaft and the eccentric wheel is small, the stress is large, and the temperature of the use environment is increased due to high-speed operation, the friction loss between the eccentric wheel and the steel shaft and between the friction piece and the eccentric wheel is accelerated, the eccentric wheel is easy to deform under stress or sink due to abrasion, the abrasion of the friction piece and the abrasion of the steel shaft are shortened, the micro pump fails, and the service cycle is shortened. Therefore, a high-efficiency wear-resistant diaphragm pump is in urgent need of being developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a high-efficient wear-resisting diaphragm pump, its wearing parts through setting up between pendulum rod and eccentric wheel converts the friction between pendulum rod and the eccentric wheel into the inside friction of wearing parts, and the diaphragm pump that sets up like this has high temperature resistant strong, and the wearability is strong, and pendulum rod and eccentric wheel zero wear, comprehensive properties is strong, long service life's advantage.

In order to achieve the above object, the utility model adopts the following technical scheme: a high efficiency, wear resistant diaphragm pump, the diaphragm pump comprising: driving motor, casing, diaphragm spare, eccentric wheel, pendulum rod, feed nozzle and ejection of compact mouth, the pendulum rod with be provided with wearing parts between the eccentric wheel, wearing parts be used for with the pendulum rod with contact friction between the eccentric wheel converts into wearing parts internal friction, in order to prevent the eccentric wheel or the pendulum rod wearing and tearing promote the life of diaphragm pump.

Furthermore, an installation shaft is arranged on one side, close to the swing rod, of the eccentric wheel, a mounting groove is formed in the swing rod, the wear-resistant part is a plane bearing, the inner ring of the plane bearing is sleeved on the installation shaft and fixedly assembled with the installation shaft, and the outer ring of the plane bearing is fixedly assembled with the side wall of the mounting groove.

Further, be provided with a plurality of rubber leather cups on the diaphragm spare, it is a plurality of the rubber leather cup includes: the working cup is provided with one end communicated with the feeding nozzle and the discharging nozzle, the other end assembled with the swing rod and driven by the swing rod to continuously change the volume of the working cup so as to realize that materials enter from the feeding nozzle and are discharged from the discharging nozzle; and one end of the balance leather cup is communicated with the outside air, and the other end of the balance leather cup is assembled with the swing rod and used for balancing the driving force of the swing rod on the working leather cup when the swing rod moves so as to ensure the stable movement of the working leather cup.

Furthermore, one working leather cup is arranged, and the rest rubber leather cups are balance leather cups; be provided with the bar groove on the diaphragm spare, the bar groove is used for realizing balanced leather cup and outside air intercommunication.

Further, the rubber packing leather cup is provided with threely, just balanced packing leather cup is provided with two, the bowl mouth department of work packing leather cup is provided with the protrusion and is provided with the bulge loop, be provided with the annular on the casing, the bulge loop be used for with the annular cooperation is in order to promote the leakproofness of work packing leather cup.

Further, the housing includes: the discharging nozzle and the feeding nozzle are both arranged on the upper shell; the sealing plate is arranged between the upper shell and the diaphragm piece and is used for being matched with the diaphragm piece to form a sealed diaphragm cavity; the fixing plate is assembled on one side, far away from the sealing plate, of the diaphragm piece and is used for being matched with the sealing plate to fix the diaphragm piece; a lower case disposed between the fixing plate and the driving motor; and a fastening screw passing through the upper shell, the sealing plate, the fixing plate and the lower shell and assembled by screw threads.

Further, be provided with the discharge gate on the closing plate, the discharge gate is used for the intercommunication the ejection of compact mouth with the work leather cup, just the closing plate with be provided with the antidrip subassembly between the casing, the antidrip subassembly is used for preventing to remain liquid in the work leather cup from the ejection of compact mouth drippage by oneself.

Further, the drip resistant assembly comprises: the plug is arranged between the sealing plate and the upper shell, is positioned at the discharge port and is used for realizing the opening or closing of the discharge port; and the elastic element is sleeved on the plug head, positioned between the plug head and the upper shell and used for tightly abutting the plug head at the discharge hole to play a role of a one-way valve.

Further, the stopper is provided with a sealing ring in a protruding mode, wherein the sealing ring is close to one side of the discharge hole, and the elastic piece extrudes the stopper, so that the sealing ring is used for improving the sealing effect of the stopper and the discharge hole.

Further, still be provided with the feed inlet on the closing plate, the feed inlet is used for the intercommunication the feed nozzle with the work leather cup, the feed nozzle with be provided with the umbrella butyl check valve between the feed inlet.

After the technical scheme is adopted, the utility model discloses beneficial effect does:

1. through setting up plane bearing between pendulum rod and eccentric wheel to make plane bearing's inner circle fixed with the installation axle on the eccentric wheel, outer lane and the installation groove lateral wall fixed assembly on the pendulum rod, thereby convert the friction between pendulum rod and the eccentric wheel into the inside friction of plane bearing, and plane bearing's wearability is strong, high temperature resistance is good, and then make the diaphragm pump that sets up like this have high temperature resistance strong, the wearability is strong, pendulum rod and eccentric wheel zero wear, the comprehensive properties is strong, long service life's advantage.

2. One of the rubber cups on the diaphragm piece is set as a working cup, and the rest are balance cups, so that the arrangement of the anti-drip assembly is facilitated, and the problems of complex structure and complex installation caused by the fact that each working cup is required to be provided with one anti-drip assembly when a plurality of rubber cups are used as the working cups are solved; simultaneously, through setting up other rubber leather cups into balanced leather cup for the pendulum rod can keep even running when the motion, and then has guaranteed the stability of work leather cup at the during operation, and the diaphragm spare that sets up like this has not only made things convenient for this antidrip design of diaphragm, has simplified antidrip structure moreover, has guaranteed the accurate nature of the flow of diaphragm pump, has reduced the cost of diaphragm pump.

3. After the diaphragm pump is pumped at liquid and is sent the completion, support the chock plug tightly in discharge gate department through the elastic component that sets up in discharge gate department to improve the leakproofness of chock plug and discharge gate through the sealing ring that sets up, thereby avoided the interior remaining liquid of diaphragm pump from the problem that discharge gate department dripped by oneself, and then promoted the antidrip effect of diaphragm pump.

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 view of the overall structure of the present embodiment;

FIG. 2 is a top view corresponding to FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view corresponding to detail B in FIG. 3;

fig. 5 is an exploded view of the present embodiment.

Description of reference numerals: 1. a drive motor; 2. a housing; 21. an upper shell; 22. a sealing plate; 221. a feed inlet; 222. a discharge port; 23. a fixing plate; 24. a lower case; 3. a diaphragm member; 31. a working leather cup; 32. balancing a leather cup; 33. a strip-shaped groove; 34. a convex ring; 4. an eccentric wheel; 41. installing a shaft; 5. a swing rod; 51. mounting grooves; 6. a feed nozzle; 7. a discharging nozzle; 8. a one-way valve of the umbrella T; 9. a drip resistant assembly; 91. a plug head; 911. a seal ring; 92. an elastic member; 10. a wear part; 100. a flat bearing; 101. an outer ring; 102. and an inner ring.

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.

This embodiment relates to a high-efficient wear-resisting diaphragm pump, includes: the device comprises a driving motor 1, a shell 2, a diaphragm 3, an eccentric wheel 4, a swing rod 5, a feeding nozzle 6 and a discharging nozzle 7.

Wherein, the eccentric wheel 4 is arranged in the shell 2, and the eccentric wheel 4 is fixedly assembled with the power output shaft of the driving motor 1, so that the eccentric wheel 4 can synchronously rotate along with the power output shaft of the driving motor 1. The swing rod 5 is arranged on the eccentric wheel 4, and when the eccentric wheel 4 rotates along with the power output shaft, the swing rod 5 moves synchronously along with the eccentric wheel 4. The diaphragm piece 3 is assembled with the swing rod 5, and when the swing rod 5 moves, a cavity used for storing liquid on the diaphragm piece 3 changes in volume, so that the diaphragm pump can extract the liquid. The feeding nozzle 6 and the discharging nozzle 7 are both arranged at the top end of the shell 2, the feeding nozzle 6 is used for feeding materials into the diaphragm piece 3, and the discharging nozzle 7 is used for discharging the materials out of the diaphragm piece 3.

Further, the housing 2 includes: an upper case 21, a sealing plate 22, a fixing plate 23, a lower case 24, and fastening screws. The upper shell 21 is located at the top end of the shell 2, and the discharging nozzle 7 and the feeding nozzle 6 are both arranged on the upper shell 21 and integrally formed with the upper shell 21. A sealing plate 22 is arranged between the upper shell 21 and the diaphragm member 3, the sealing plate 22 being adapted to cooperate with the diaphragm member 3 to form a sealed diaphragm chamber. The fixing plate 23 is fitted to the diaphragm member 3 on the side remote from the sealing plate 22, and the fixing plate 23 is adapted to cooperate with the sealing plate 22 to fix the diaphragm member 3. The lower shell 24 is disposed between the fixing plate 23 and the driving motor 1, and the lower shell 24 is used for fixing and assembling the main body of the driving motor 1. The fastening screws are screw-assembled with the lower case 24 through the upper case 21, the sealing plate 22, the fixing plate 23, thereby accomplishing the assembly of the case 2.

Preferably, three fastening screws are provided, but three are not illustrated in the figures. After the fastening screws are locked, the diaphragm member 3 is clamped and mounted on the housing 2 by the engagement of the fixing plate 23 and the sealing plate 22.

Further, a wear-resistant part 10 is arranged between the swing rod 5 and the eccentric wheel 4, and the wear-resistant part 10 is used for converting contact friction between the swing rod 5 and the eccentric wheel 4 into internal friction of the wear-resistant part 10, so that the eccentric wheel 4 or the swing rod 5 is prevented from being worn and the service life of the diaphragm pump is prolonged.

Specifically, a mounting shaft 41 is arranged on one side of the eccentric wheel 4 close to the swing rod 5, and a mounting groove 51 is arranged on the swing rod 5. The wear-resistant member 10 is a flat bearing 100, an inner ring 102 of the flat bearing 100 is sleeved on the mounting shaft 41 and fixedly assembled with the mounting shaft 41, and an outer ring 101 of the flat bearing 100 is fixedly assembled with a side wall of the mounting groove 51. When the swing rod 5 and the eccentric wheel 4 move, the inner ring 102 of the plane bearing 100 rotates relative to the outer transmission, and the plane bearing 100 can resist high temperature and abrasion, so that the diaphragm pump arranged in the way has the advantages of strong high temperature resistance and abrasion resistance, zero abrasion of the swing rod 5 and the eccentric wheel 4, strong comprehensive performance and long service life.

In other embodiments, the eccentric wheel 4 is provided with a mounting groove 51, the swing rod 5 is provided with a mounting shaft 41, the wear-resistant member 10 is a flat bearing 100, an inner ring 102 of the flat bearing 100 is sleeved on the mounting shaft 41 and fixedly assembled with the mounting shaft 41, and an outer ring 101 of the flat bearing 100 is fixedly assembled with a side wall of the mounting groove 51.

Further, a plurality of rubber cups are provided on the diaphragm member 3. The plurality of rubber cups include: a working cup 31 and a balancing cup 32.

One end of the working leather cup 31 is communicated with the feeding nozzle 6 and the discharging nozzle 7, and the other end is assembled with the swing rod 5. Under the drive of the swing rod 5, the working leather cup 31 continuously changes the volume of the working leather cup, so that the materials enter from the feeding nozzle 6 and are discharged from the discharging nozzle 7. One end of the balance leather cup 32 is communicated with the outside air, and the other end is assembled with the swing rod 5. The balance leather cup 32 is used for balancing the driving force of the oscillating bar 5 on the working leather cup 31 when the oscillating bar 5 moves, so that the balance leather cup 32 for ensuring the stable movement of the working leather cup 31 is ensured. Thereby improving the accuracy of the flow in and out of the working cup 31.

Preferably, one working cup 31 is provided, and the balance cups 32 are all the other rubber cups. A strip-shaped groove 33 is formed in the diaphragm 3, and the strip-shaped groove 33 is used for achieving communication between the balance leather cup 32 and the outside air.

Preferably, there are three rubber cups and two balancing cups 32. The bowl mouth department of work leather cup 31 is provided with the protrusion and is provided with bulge loop 34, is provided with the annular on the closing plate 22, and bulge loop 34 is used for cooperating with the annular to promote the leakproofness of work leather cup 31, guaranteed the accurate nature of work leather cup 31 flow business turn over.

Preferably, the sealing plate 22 is provided with a feed inlet 221, the feed inlet 221 is used for communicating the feed nozzle 6 with the working cup 31, and the umbrella-shaped check valve 8 is arranged between the feed nozzle 6 and the feed inlet 221.

Preferably, the sealing plate 22 is provided with a discharge port 222, the discharge port 222 is used for communicating the discharge nozzle 7 with the working cup 31, and the anti-drip assembly 9 is arranged between the sealing plate 22 and the housing 2, the anti-drip assembly 9 is used for preventing the liquid remained in the working cup 31 from automatically dripping from the discharge nozzle 7. The diaphragm pump arranged in this way can realize the anti-drip function of the diaphragm pump only by arranging the anti-drip component 9 at the discharge hole 222 corresponding to the working cup 31.

Further, the drip-proof assembly 9 comprises: a plug 91 and a resilient member 92. The plug 91 is disposed between the sealing plate 22 and the upper shell 21 and located at the discharge port 222. The plug 91 is used to open or close the discharge port 222. The elastic member 92 is sleeved on the plug 91 and located between the plug 91 and the upper shell 21. The elastic member 92 is used for pressing the plug 91 against the discharge port 222, thereby functioning as a check valve. When the volume of the diaphragm pump is reduced, the liquid in the working cup 31 presses the plug 91, thereby compressing the elastic member 92, so that the discharge port 222 is opened, and the discharge of the liquid is completed.

Preferably, a sealing ring 911 is convexly disposed on one side of the plug 91 close to the discharge port 222, and when the elastic member 92 presses the plug 91, the sealing ring 911 is used for improving the sealing effect between the plug 91 and the discharge port 222. The elastic member 92 is a spring. In other embodiments, the elastic member 92 may also be a spring block, a spring plate, or the like.

The working principle of the present embodiment is roughly as follows: through setting up flat bearing 100 between pendulum rod 5 and eccentric wheel 4, and make inner circle 102 of flat bearing 100 fixed with installation axle 41 on the eccentric wheel 4, outer lane 101 and the installation groove 51 lateral wall fixed mounting on the pendulum rod 5, thereby convert the friction between pendulum rod 5 and the eccentric wheel 4 into the inside friction of flat bearing 100, and flat bearing 100's wearability is strong, high temperature resistance is good, and then make the diaphragm pump that sets up like this have high temperature resistance, the wearability is strong, pendulum rod 5 and eccentric wheel 4 zero wearing and tearing, the comprehensive properties is strong, long service life's advantage.

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 high efficiency, wear resistant diaphragm pump, the diaphragm pump comprising: driving motor (1), casing (2), diaphragm spare (3), eccentric wheel (4), pendulum rod (5), feed nozzle (6) and ejection of compact mouth (7), its characterized in that, pendulum rod (5) with be provided with wearing parts (10) between eccentric wheel (4), wearing parts (10) be used for with pendulum rod (5) with contact friction between eccentric wheel (4) converts into wearing parts (10) internal friction, in order to prevent eccentric wheel (4) or pendulum rod (5) wearing and tearing and promotion diaphragm pump's life.

2. The efficient wear-resistant diaphragm pump according to claim 1, wherein a mounting shaft (41) is disposed on one side of the eccentric wheel (4) close to the swing rod (5), a mounting groove (51) is disposed on the swing rod (5), the wear-resistant member (10) is a flat bearing (100), an inner ring (102) of the flat bearing (100) is sleeved on the mounting shaft (41) and fixedly assembled with the mounting shaft (41), and an outer ring (101) of the flat bearing (100) is fixedly assembled with a side wall of the mounting groove (51).

3. A high efficiency wear resistant diaphragm pump according to claim 1 or 2, characterized in that a plurality of rubber cups are provided on the diaphragm member (3), comprising:

the working leather cup (31) is provided with one end communicated with the feeding nozzle (6) and the discharging nozzle (7), the other end assembled with the swing rod (5), and the volume of the working leather cup is continuously changed under the driving of the swing rod (5) so as to realize the feeding of materials from the feeding nozzle (6) and the discharging of the materials from the discharging nozzle (7); and the number of the first and second groups,

one end of the balance leather cup (32) is communicated with the outside air, and the other end of the balance leather cup (32) is assembled with the swing rod (5) and is used for balancing the driving force of the work leather cup (31) by the swing rod (5) when the swing rod (5) moves so as to ensure the stable movement of the work leather cup (31).

4. A high efficiency wear resistant diaphragm pump according to claim 3 characterized in that there is one working cup (31) and the remaining rubber cups are balance cups (32); be provided with bar groove (33) on diaphragm spare (3), bar groove (33) are used for realizing balanced leather cup (32) and outside air intercommunication.

5. The high-efficiency wear-resistant diaphragm pump according to claim 4, wherein the number of the rubber cups is three, the number of the balance cups (32) is two, a protruding ring (34) is arranged at the opening of the working cup (31) in a protruding manner, an annular groove is arranged on the housing (2), and the protruding ring (34) is used for being matched with the annular groove to improve the sealing performance of the working cup (31).

6. A high efficiency wear resistant diaphragm pump according to claim 5, wherein the housing (2) comprises:

the discharging nozzle (7) and the feeding nozzle (6) are arranged on the upper shell (21);

a sealing plate (22) arranged between the upper shell (21) and the diaphragm member (3) and used for cooperating with the diaphragm member (3) to form a sealed diaphragm cavity;

a fixing plate (23) which is assembled on one side of the diaphragm member (3) far away from the sealing plate (22) and is used for being matched with the sealing plate (22) to fix the diaphragm member (3);

a lower case (24) disposed between the fixing plate (23) and the driving motor (1); and the number of the first and second groups,

and the fastening screw penetrates through the upper shell (21), the sealing plate (22), the fixing plate (23) and the lower shell (24) and is assembled in a threaded mode.

7. The high-efficiency wear-resistant diaphragm pump according to claim 6, characterized in that the sealing plate (22) is provided with a discharge port (222), the discharge port (222) is used for communicating the discharge nozzle (7) and the working cup (31), and an anti-drip component (9) is arranged between the sealing plate (22) and the shell (2), the anti-drip component (9) is used for preventing the liquid remained in the working cup (31) from automatically dripping from the discharge nozzle (7).

8. A high efficiency wear resistant diaphragm pump according to claim 7, characterized in that the anti-drip assembly (9) comprises: a plug (91) arranged between the sealing plate (22) and the upper shell (21) and positioned at the discharge port (222) for opening or closing the discharge port (222); and the number of the first and second groups,

the elastic piece (92) is sleeved on the plug head (91), is positioned between the plug head (91) and the upper shell (21), and is used for pressing the plug head (91) against the discharge hole (222) to play a role of a one-way valve.

9. The high-efficiency wear-resistant diaphragm pump according to claim 8, wherein a sealing ring (911) is convexly arranged on the plug head (91) near the discharge port (222), and when the elastic member (92) presses the plug head (91), the sealing ring (911) is used for improving the sealing effect of the plug head (91) and the discharge port (222).

10. The high-efficiency wear-resistant diaphragm pump according to claim 9, wherein the sealing plate (22) is further provided with a feed inlet (221), the feed inlet (221) is used for communicating the feed nozzle (6) and the working cup (31), and an umbrella-shaped check valve (8) is arranged between the feed nozzle (6) and the feed inlet (221).