CN114635843B - Fluid operation assembly and fluid pump - Google Patents

Abstract

The application relates to a fluid operation assembly and a fluid pump, wherein the fluid operation assembly comprises a pump cover provided with a fluid inlet interface and a fluid outlet interface; the valve seat is connected with the pump cover and is provided with a plurality of groups of fluid inlet holes and fluid outlet holes; the diaphragm seat is connected with the valve seat; the diaphragm is arranged on the diaphragm seat, and the fluid inlet hole and the fluid outlet hole are opposite to the opening of the diaphragm; the fluid inlet hole and the fluid outlet hole are respectively provided with a one-way valve for opening or closing the fluid inlet hole and the fluid outlet hole; and an air inlet passage and an air outlet passage which are mutually independent are formed among the pump cover, the valve seat and the diaphragm. The application also provides a fluid pump which comprises the fluid operation assembly and a driving assembly. The application has the effects of improving the fluid operation efficiency, reducing noise and prolonging the service life of the fluid pump.

Description

Fluid operation assembly and fluid pump

Technical Field

The application relates to the field of fluid delivery, in particular to a fluid operation assembly and a fluid pump.

Background

Pumps are widely used in many fields as a tool commonly used in the field of fluid transportation. There are various pumps on the market, such as air pumps, water pumps, etc.

The existing air pump has the problems: the diaphragm is easy to wear, high in noise, high in current and short in service life; the problems exist because under the condition that the appearance of the pump is required to be certain, the current adopted technical mode is that a centralized valve plate is adopted in an air outlet structure, a high-entity diaphragm is adopted in a driving structure, and the diaphragm is made large; the motor rotation speed is increased; the centralized valve plate can generate larger current, and the defects of easy abrasion, high noise, large current, short service life and the like of the diaphragm can be caused by the large diaphragm shape with high entity and unreasonable motor rotating speed.

The reason why the centralized valve plate generates larger current is that the air inflow and the air outflow of the centralized valve plate are mutually interfered, namely, the air flow resistance is increased, so that the motor can increase the power to maintain the original rotating speed in order to overcome the resistance between the air flows, and then generate larger current, however, the interference between the air flows can generate noise, thereby causing the low operation efficiency of the fluid.

In addition, in order to improve the working capacity of the fluid pump, the diaphragm is made to be large in the market to increase the fluid capacity, but the large diaphragm causes pressure to the motor, and the larger the diaphragm is, the more easily abrasion is generated, so that the problem of low service life is caused.

With respect to the related art described above, the inventors consider that there is a defect that the fluid operation is not efficient.

Disclosure of Invention

In order to improve the fluid operation efficiency of the fluid pump, the application provides a fluid operation assembly and the fluid pump.

The application provides a fluid operation assembly which adopts the following technical scheme:

A fluid handling assembly, comprising:

The pump cover is provided with a fluid inlet interface and a fluid outlet interface;

The valve seat is connected with the pump cover and is provided with a plurality of groups of fluid inlet holes and fluid outlet holes;

The diaphragm seat is connected with the valve seat;

the diaphragm is arranged on the diaphragm seat, and the fluid inlet hole and the fluid outlet hole are opposite to the opening of the diaphragm;

The fluid inlet hole and the fluid outlet hole are respectively provided with a one-way valve for opening or closing the fluid inlet hole and the fluid outlet hole;

And an air inlet passage and an air outlet passage which are mutually independent are formed among the pump cover, the valve seat and the diaphragm.

By adopting the technical scheme, when the pressure in the diaphragm is smaller than the external pressure, fluid enters the diaphragm from the fluid inlet port through the fluid inlet hole and enters the diaphragm through the one-way valve (namely the air inlet passage), and when the pressure in the diaphragm is smaller than the external pressure, the fluid in the diaphragm is discharged through the fluid outlet hole and the one-way valve and then is discharged through the fluid outlet port (namely the air outlet passage); the exhaust passage and the air inlet passage are mutually independent and do not interfere with each other, so that the fluid running is smoother, the fluid running efficiency is improved, and the noise can be reduced.

Optionally, a plurality of diversion cavities isolated from each other are arranged between the pump cover and the valve seat, and the diversion cavities are communicated with the fluid inlet holes.

Optionally, the valve seat, the diaphragm seat and the outer wall of the diaphragm form a containing cavity, a bottom wall of the diversion cavity is provided with a diversion hole, and the diversion cavity is communicated with the containing cavity through the diversion hole.

By adopting the technical scheme, the fluid inlet interface is communicated with one of the flow guide cavities, after the fluid enters the flow guide cavities through the fluid inlet interface, the flow guide cavities are directly isolated from each other, the fluid cannot directly enter other flow guide cavities, one part of the fluid enters the diaphragm from the fluid inlet hole, the other part of the fluid enters the valve seat, the diaphragm seat and the accommodating cavity formed by the outer wall of the diaphragm through the flow guide holes at the bottom of the flow guide cavity, then enters other flow guide cavities from other flow guide holes, and finally enters other diaphragms through the fluid inlet holes; the purpose that sets up like this is that setting up a plurality of water conservancy diversion chambeies, can once only absorb more fluid, has improved the working capacity of fluid pump, sets up the water conservancy diversion chamber relatively independent in addition, in order to reduce when admitting air, the check valve takes place deformation and mutually interfere under the air current effect to reach noise reduction's effect.

Optionally, a plurality of flow dividing columns are arranged at the top of the cavity wall of the flow guiding cavity.

By adopting the technical scheme, the device has the functions of shunting fluid and accelerating operation efficiency.

Optionally, a drainage cavity is arranged between the pump cover and the valve seat, and the drainage cavity is communicated with the fluid discharge interface.

Through adopting above-mentioned technical scheme, the existence of drainage chamber provides the space for setting up the check valve deformation on the fluid discharge hole, and fluid can stop in the drainage intracavity briefly after flowing out from the fluid discharge hole moreover, does benefit to like this and once only discharges more fluids, and then has accelerated the efficiency of fluid operation.

Optionally, a plurality of limit posts are arranged at the top of the cavity wall of the drainage cavity.

Through adopting above-mentioned technical scheme, in the exhaust process, the check valve takes place to deform under the pressure effect, thereby the fluid discharge hole has been opened, if there is not the existence of spacing post at this moment, the check valve can be direct with the groove top contact of drainage chamber, thereby fluid can only follow along the side circulation that leans on fluid discharge interface place, and the existence of spacing post can block the partial deformation of post check valve, make there is the clearance between check valve and the drainage chamber top, the exhaust fluid can follow the fluid discharge hole discharge and follow the clearance and circulate to fluid discharge interface place again this moment, the benefit that sets up like this lies in having increased the direction of movement of fluid, and then reach the effect that improves fluid operating efficiency.

Optionally, a baffle is disposed on the top wall of the diversion cavity near the fluid inlet interface, and a gap is formed between the baffle and the sidewall of the diversion cavity.

Through adopting above-mentioned technical scheme, when fluid gets into the water conservancy diversion intracavity rather than direct intercommunication from fluid access interface in the fluid operation process, most fluid can directly get into the holding cavity from this water conservancy diversion chamber through the fluid access hole, lead to the fluid in other water conservancy diversion chambeies less to lead to the fluid operation inefficiency, however, the existence of baffle can reduce the direct flow of fluid to the water conservancy diversion intracavity that gets into direct intercommunication with fluid access interface, more fluid gets into other water conservancy diversion chambeies along the water conservancy diversion hole under the blocking of baffle for fluid is full of all water conservancy diversion intracavity, and then reaches the purpose that promotes the operating efficiency of fluid.

Optionally, the fluid inlet interface and the diversion hole are staggered.

By adopting the above technical solution, it should be understood that when two holes are arranged directly opposite to each other, fluid flows in from one hole and flows out from the other hole directly; therefore, in order to prevent the fluid entering the interface from directly flowing into the accommodating cavity from the diversion hole, the condition that the fluid in the diversion cavity directly communicated with the fluid entering interface is too little is caused, the fluid entering interface and the diversion hole are arranged in a staggered manner, so that the bottom of the diversion cavity plays a role in diversion, all the diversion cavities can be filled with the fluid, and the operation efficiency of the fluid pump is improved.

Optionally, the separator includes: a cavity portion, a solid portion, and a connection portion; a capsule cavity is arranged in the cavity body and is used for containing fluid; one end of the solid part is connected with the bottom of the sac cavity, and the other end is connected with the connecting part.

Optionally, the depth of the capsule is greater than the thickness of the solid portion.

Through adopting above-mentioned technical scheme, set the degree of depth of bag chamber to be greater than the thickness of solid portion, promoted the volume of bag chamber on the one hand, can hold more fluids, on the other hand can reduce the volume of solid portion, reduce the load of motor, can produce higher fluid operating efficiency under lower rotational speed, in addition, can also reduce the diaphragm wearing and tearing owing to high rotational speed to life has been improved.

Optionally, the connecting part is provided with a limiting protrusion.

Through adopting above-mentioned technical scheme, spacing arch is favorable to improving connection stability, can effectively avoid the diaphragm motion in-process and take place to drop.

The second object of the present application is to provide a fluid pump, which adopts the following calculation scheme:

a fluid pump comprising a fluid handling assembly as described above.

Optionally, the fluid pump further comprises a driving assembly, wherein the driving assembly comprises a motor, a base, an eccentric wheel, a connecting shaft and a curved rod;

the motor is used to provide a driving force,

The base is arranged below the diaphragm seat, and the motor is arranged below the base;

One end of the eccentric wheel is connected with the motor output shaft, an eccentric hole is formed in the other end of the eccentric wheel, a central hole is formed in the curved bar, one end of the connecting shaft is connected with the eccentric hole, the other end of the connecting shaft is connected with the central hole, and the curved bar is connected with the diaphragm.

Through adopting above-mentioned technical scheme, the motor drives the eccentric wheel and rotates, because the eccentric orifices is the slope setting, and in addition eccentric action for the center pin of bent lever is the circular cone pendulum motion, because bent lever and diaphragm are connected, center pin and eccentric orifices swing joint, make the diaphragm do the extrusion motion from top to bottom.

Optionally, a ball is arranged at the bottom of the eccentric hole.

Through adopting above-mentioned technical scheme, the existence of ball changes the sliding friction of connecting axle and eccentric wheel into rolling friction, has reduced frictional force, and then reduces the wearing and tearing of connecting axle and eccentric wheel, finally reaches the effect that improves life.

Optionally, the fluid pump further comprises a buckle, clamping grooves are formed in the outer walls of the pump cover, the valve seat, the diaphragm seat and the base, and the buckle is matched with the clamping grooves to connect the pump cover, the valve seat, the diaphragm seat and the base into a whole.

By adopting the technical scheme, the connection stability of the whole fluid pump is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The air inlet passage and the air outlet passage are separated and independent, so that interference between air inlet fluid and air outlet fluid can be reduced, resistance between the fluid is reduced, and the fluid can run more smoothly;

2. Through also divide into several water conservancy diversion chamber with the admission passage, correspond a diaphragm respectively for the operational capacity of fluid pump promotes, makes in addition that separates on the horizontal direction between the water conservancy diversion chamber, has further reduced the condition that different check valves interfere with each other under the effect that receives the atmospheric pressure, thereby both reduced the noise and improved fluid operating efficiency.

Drawings

FIG. 1 is an exploded schematic view of a fluid pump according to an embodiment of the present disclosure;

FIG. 2 is an exploded view (bottom view) of a drive assembly of a fluid pump according to an embodiment of the present application;

FIG. 3 is an exploded view of a drive assembly of a fluid pump according to an embodiment of the present disclosure; (from a top view);

FIG. 4 is a schematic illustration of the external structure of a fluid pump according to an embodiment of the present application;

FIG. 5 is an exploded schematic view of a fluid handling assembly of a fluid pump according to an embodiment of the present application;

FIG. 6 is a schematic illustration of a pump cap of a fluid pump according to an embodiment of the present application;

FIG. 7 is an enlarged view at A in FIG. 6;

Fig. 8 is an enlarged view at B in fig. 6;

FIG. 9 is a schematic illustration of a valve seat of a fluid pump according to an embodiment of the present application;

FIG. 10 is a schematic cross-sectional view of a pump cap and valve seat cap of a fluid pump according to an embodiment of the present application;

FIG. 11 is a schematic illustration of a diaphragm of a fluid pump according to an embodiment of the present application;

fig. 12 is a cross-sectional view of a diaphragm of a fluid pump in accordance with an embodiment of the present application.

Reference numerals illustrate:

1. A fluid handling assembly;

11. a pump cover; 111. a fluid inlet interface; 112. a fluid discharge port;

12. a valve seat; 120. a fluid discharge hole; 121. a fluid inlet; 122. a first fixing hole; 123. a second fixing hole;

100. A diversion cavity; 101. a deflector aperture; 102. a drainage chamber; 103. a limit column; 104. a split column; 105. a baffle;

13. a one-way valve; 131. an umbrella stick; 132. umbrella cap; 133. spherical protrusions; 1300. a one-way fluid inflow valve; 1301. a one-way fluid discharge valve;

14. A diaphragm seat; 140. a mounting hole;

15. A diaphragm; 151. a cavity portion; 1511. a cavity sidewall; 1512. a cavity bottom wall; 1513. a capsule cavity; 152. a solid part; 153. a connection part; 1530. a limit protrusion;

2.a drive assembly; 21. a motor; 22.a base;

23. An eccentric wheel; 231. an eccentric hole; 232. a ball;

24. a connecting shaft;

25. a curved bar; 250. a central bore; 251. a support rod;

3. A buckle; 30. a clamping groove.

Detailed Description

The application is described in further detail below with reference to fig. 1 to 12.

The embodiment of the application discloses a fluid pump. A fluid pump comprises a fluid running assembly 1 and a driving assembly 2, wherein the fluid running assembly 1 is driven by the driving assembly 2 to convey fluid. The fluid operation assembly 1 of the present application has an intake passage and an exhaust passage independent of each other, and is different in intake passage or exhaust passage, so that interference between fluid when the fluid pump sucks or discharges fluid is reduced, thereby improving fluid operation efficiency of the fluid pump.

The fluid operation assembly 1 comprises a pump cover 11, a valve seat 12, a one-way valve 13, a diaphragm 15 and a diaphragm seat 14; the drive assembly 2 comprises a base 22, a crank 25, a connecting shaft 24, an eccentric 23 and a motor 21. For convenience in describing the positional relationship and the connection relationship between the components of the fluid pump, the adopted directional terms such as up, down, left, right, front, rear, bottom, top and the like do not set any limit to the present application.

The motor 21 is fixedly arranged below the base 22, an output shaft of the motor 21 is connected with the eccentric wheel 23, specifically, an eccentric hole 231 is formed in the upper end of the eccentric wheel 23, a central hole 250 is formed in the lower end of the curved rod 25, a connecting shaft 24 is connected to the eccentric hole 231, one end of the connecting shaft 24 is connected to the eccentric hole 231 of the eccentric wheel 23, and the other end of the connecting shaft is connected to the central hole 250 of the curved rod 25. In order to reduce friction loss between the connecting shaft 24 and the eccentric wheel 23, balls 232 are provided at the bottom of the eccentric hole 231. The curved bar 25 has a set of struts 251 (4 struts 251 in the figure), the struts 251 being uniformly distributed circumferentially about the central aperture 250. The diaphragm seat 14 is arranged on the base 22, a group of mounting holes 140 are arranged at positions of the diaphragm seat 14 corresponding to the supporting rods 251 of the bent rods 25, the diaphragm 15 is hermetically mounted in the mounting holes 140, and the bottom of the diaphragm 15 is correspondingly mounted on the supporting rods 251.

In order to improve the assembly stability of the fluid pump and facilitate assembly and disassembly, the pump cover 11, the valve seat 12, the diaphragm seat 14 and the base 22 are fixed by the buckle 3, and specifically, the outer side walls of the pump cover 11, the valve seat 12, the diaphragm seat 14 and the base 22 are provided with the clamping grooves 30, and the clamping grooves 30 are matched with the buckle 3 for fixation.

The diaphragm seat 14 is arranged on the base 22, the valve seat 12 is hermetically arranged on the diaphragm seat 14, and a containing cavity is formed among the valve seat 12, the diaphragm seat 14 and the base 22; the pump cover 11 is hermetically arranged on the valve seat 12, a fluid outlet port 112 and a fluid inlet port 111 are arranged on the pump cover 11, a diversion cavity 100 is formed on the outer ring when the pump cover 11 and the valve seat 12 are hermetically covered, a drainage cavity 102 is formed on the inner ring, and in this embodiment, 4 diversion cavities 100 and 4 drainage cavities 102 are specifically formed. The bottom of the diversion cavity 100 is provided with a diversion hole 101 and a set of fluid inlet holes 121 (in this embodiment, the set of fluid inlet holes 121 is specifically 4).

The check valve 13 includes an umbrella stem 131 and an umbrella cap 132, the umbrella stem 131 of the check fluid inflow valve being inserted in the first fixing hole, the umbrella cap 132 of the check fluid inflow valve being capable of covering the 4 fluid inlet holes 121. In operation, the purpose of opening and closing the fluid inlet aperture 121 and the fluid outlet aperture 120 is achieved. In addition, in order to better fix the check valve 13 to the valve seat 12, a spherical protrusion 133 is provided at an end of the umbrella stem 131 remote from the umbrella cap 132.

In the embodiment of the present application, the check valve 13 includes a check fluid inflow valve 1300 and a check fluid discharge valve 1301. Specifically, a first fixing hole 122 is further formed at the bottom of the diversion chamber 100, and the one-way fluid inflow valve 1300 is disposed in the first fixing hole 122. Similarly, a set of fluid discharge holes 120 (in this embodiment, a set of fluid inlet holes 121 is specifically 4) are formed in the bottom of the drain chamber 102, a second fixing hole is further formed in the bottom of the drain chamber 102, and a one-way fluid discharge valve 1301 is disposed in the second fixing hole.

It should be noted that the 4 flow guiding chambers 100 are isolated from each other, and cannot directly enter other flow guiding chambers. Specifically, the valve seat 12, the diaphragm seat 14, the outer wall of the diaphragm 15 and the base 22 enclose a containing cavity, and the diversion cavity 100 is communicated with the containing cavity through a diversion hole. The flow direction of the incoming fluid is thus, in part: fluid inlet port 111-diversion chamber 100 directly connected to fluid inlet port 111-fluid inlet port 121-one-way fluid inflow valve 1300-diaphragm 15; the other part is as follows: fluid inlet port 111-diversion chamber 100 directly connected with fluid inlet port 111-diversion hole 101-accommodation chamber-other diversion holes 101-other diversion chamber 100-fluid inlet hole 121-one-way fluid inflow valve 1300-diaphragm 15. This has the advantage of relatively isolating each of the diversion chambers 100, so that interference between adjacent unidirectional fluid inflow valves 1300 is reduced and noise is reduced when fluid is input. And the accommodating chamber is incorporated into a part of the air inlet passage, so that the air inlet is smoother, and the fluid operation efficiency is improved.

A baffle 105 (i.e., the side of the pump cover 11 adjacent to the valve seat 12) is disposed at the top of the flow-directing chamber 100 in communication with the fluid inlet port 111, with a gap between the baffle 105 and the sidewall of the flow-directing chamber 100. This has the advantage of providing a uniform distribution of fluid within each of the flow directing chambers 100, preventing fluid from entering the port 111 and most of the fluid from entering the diaphragm 15 from the fluid inlet 121 of the nearest flow directing chamber 100, thus allowing each diaphragm 15 to operate with a load, thereby improving fluid efficiency. Secondly, the fluid inlet port 111 and the diversion hole 101 are staggered, which utilizes the bottom of the diversion cavity 100 to block and split the fluid (if the fluid inlet port 111 and the diversion hole 101 are arranged opposite to each other, the fluid can flow out of the diversion hole 101 from the fluid inlet port 111 into the diversion cavity 100 immediately, which can cause too little fluid in the diversion cavity 100 directly communicated with the fluid inlet port 111, so that the workload of the diaphragm 15 is different, and the operation efficiency is reduced).

A flow dividing column 104 is further arranged at the top of each flow guiding cavity 100 (specifically, at the side of the pump cover 11 close to the valve seat 12), namely, when the fluid enters the flow guiding cavity 100, the flow dividing column 104 divides a plurality of streams of fluid to circulate, so that the effect of improving the fluid operation efficiency is achieved.

In addition, the 4 drainage cavities 102 are uniformly distributed circumferentially around the fluid discharge port 112, and a notch is formed in the drainage cavity 102 near the fluid discharge port 112, so that fluid can be collected at the notch and discharged from the fluid discharge port 112. The flow direction of the discharged fluid is as follows: diaphragm 15-fluid discharge orifice 120-one-way fluid discharge valve 1301-discharge chamber 102-notch-fluid discharge port 112.

It is contemplated that during a conventional venting process, the one-way fluid discharge valve 1301 is deformed by the squeezing of the fluid within the diaphragm 15, and the umbrella cap 132 portion thereof may directly abut against the groove top portion of the drainage cavity 102 (i.e., the side of the pump cover 11 adjacent to the valve seat 12), and then the fluid exiting the fluid discharge hole 120 may flow along the side adjacent to the notch, resulting in low venting efficiency. Based on this, a set of limit posts 103 is disposed at the top of the groove of the drainage cavity 102, during the exhaust process, the unidirectional fluid discharge valve 1301 is deformed, and the umbrella cap 132 portion of the unidirectional fluid discharge valve contacts with the limit posts 103, so that a certain hole exists between the umbrella cap 132 and the top of the drainage cavity 102, and at this time, the fluid coming out of the fluid discharge hole 120 flows out of the hole, so that the flow direction of the fluid is increased, and the fluid operation efficiency is improved.

The diaphragm 15 used in the present application may be of conventional construction, and the present application further provides an improved diaphragm 15. Specifically, the diaphragm 15 includes the cavity 151, the solid portion 152, and the connection portion 153, the solid portion 152 is connected to the lower portion of the cavity 151, and the connection portion 153 is connected to the lower portion of the solid portion 152, and the cavity 151, the solid portion 152, and the connection portion 153 are integrally formed in this embodiment, so that the overall strength of the diaphragm 15 can be improved. In order to reinforce the connection stability of the connection portion 153 of the diaphragm 15 and the rod 251 of the bent lever 25, a limit projection 1530 is provided at the end of the connection portion 153, and the limit projection 1530 can prevent the connection portion 153 from being disconnected from the rod 251.

Cavity portion 151 includes a cavity sidewall 1511 and a cavity bottom wall 1512, cavity sidewall 1511 and cavity bottom wall 1512 enclosing to form a bladder cavity 1513. The vertical distance from the top end of chamber sidewall 1511 to chamber bottom wall 1512 is a (i.e., the depth of the diaphragm), and the thickness of solid portion 152 is b (i.e., the vertical distance connecting chamber portion 151 and connecting portion 153 in the present application), which is set to a > b in the present application, is designed to increase bladder 1513 as much as possible, i.e., to accommodate more fluid, and to reduce the volume of solid portion 152 (and thus the weight), thereby reducing the load on motor 21, to produce higher fluid operation efficiency at lower rotational speeds, and to reduce wear of diaphragm 15 due to high rotational speeds, thereby improving service life. Specifically, in this embodiment, a: b is 3:1, and experiments prove that at this ratio, it can be well ensured that the cavity 151 contains as much fluid as possible, and the solid portion 152 can provide stable support for the cavity 151 at this ratio, and maintain a certain strength to resist abrasion. In other embodiments a: b may also be 2:1,4:1, etc.

The surface of the cavity bottom wall 1512 away from the capsule 1513 is a first connecting end surface, the surface of the solid portion 152 connected to the first connecting end surface is a second connecting end surface, and the area of the first connecting end surface is set to be larger than the area of the second connecting end surface (i.e., the area of the cavity bottom wall 1512 is larger than the area of the solid portion 152 connected to the cavity 151). The purpose of this is that the contact area between the solid portion 152 and the cavity 151 is the second connection end face under an external force, and according to p=f/S, under a certain force condition, the smaller S is, the larger the pressure P is, and thus, the more easily the bladder 1513 is deformed, the higher the fluid operation efficiency of the motor 21 can be improved without an excessively high rotational speed.

The implementation principle of the fluid pump of the embodiment of the application is as follows: starting the motor 21, the motor 21 drives the eccentric wheel 23 to rotate, the eccentric wheel 23 rotates the connecting shaft 24 together, the connecting shaft 24 drives the crank 25 to move up and down in an arc shape, the diaphragm 15 is connected with the crank 25, so that the diaphragm 15 deforms along with the movement of the crank 25, the inner volume of a capsule 1513 of the diaphragm 15 is changed, when the volume in the capsule 1513 is increased, the air pressure of the capsule 1513 is smaller than the external air pressure, the unidirectional fluid discharge valve 1301 is subjected to the external pressure to close the corresponding fluid discharge hole 120, the unidirectional fluid inflow valve 1300 is subjected to the external pressure to open the fluid inlet hole 121, fluid enters the diaphragm 15 from the fluid inlet interface 111 through the air inlet passage, and enters the diaphragm 15 through the air inlet valve and the fluid inlet hole 121, when the volume in the capsule 1513 is reduced, the air pressure of the capsule 1513 is larger than the external air pressure, the unidirectional fluid inflow valve 1300 is subjected to the external pressure to close the corresponding fluid 121, the unidirectional fluid discharge valve 1301 is subjected to the external pressure to open the fluid discharge hole 120, the fluid passes through the unidirectional fluid discharge valve 1301 and the fluid inlet hole 120 from the diaphragm 15, and the fluid is discharged from the fluid outlet interface 102 through the fluid outlet interface 112; by the rotation of the motor 21, the above operation is repeated, and the conveyance of the fluid is realized. It is worth noting that the independent air inlet passage and the independent air outlet passage of the fluid pump provided by the application greatly improve the fluid operation efficiency.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (6)

1. A fluid handling assembly, comprising:

A pump cover (11) provided with a fluid inlet port (111) and a fluid outlet port (112);

a valve seat (12) connected to the pump cover (11), the valve seat (12) being provided with a plurality of sets of fluid inlet holes (121) and fluid outlet holes (120);

A diaphragm seat (14) connected to the valve seat (12);

A diaphragm (15) provided on the diaphragm seat (14), the fluid inlet hole (121) and the fluid outlet hole (120) being opposite to the opening of the diaphragm (15);

The fluid inlet hole (121) and the fluid outlet hole (120) are respectively provided with a one-way valve (13) for opening or closing the fluid inlet hole (121) and the fluid outlet hole (120);

an air inlet passage and an air outlet passage which are mutually independent are formed among the pump cover (11), the valve seat (12) and the diaphragm (15);

A plurality of flow guide cavities (100) which are isolated from each other are arranged between the pump cover (11) and the valve seat (12), the flow guide cavities (100) are communicated with the fluid inlet holes (121), the valve seat (12), the diaphragm seat (14) and the outer wall of the diaphragm (15) form a containing cavity, a flow guide hole (101) is arranged at the bottom wall of the flow guide cavity (100), and the flow guide cavities (100) are communicated with the containing cavity through the flow guide holes (101);

A drainage cavity (102) is arranged between the pump cover (11) and the valve seat (12), the drainage cavity (102) is communicated with the fluid discharge interface (112), and a plurality of limit posts (103) are arranged at the top of the cavity wall of the drainage cavity (102).

2. The fluid operation assembly according to claim 1, wherein the diaphragm (15) comprises: a cavity (151), a solid (152) and a connection (153);

a capsule cavity (1513) is arranged in the cavity body (151), and the capsule cavity (1513) is used for containing fluid;

One end of the solid part (152) is connected with the bottom of the sac cavity, and the other end is connected with the connecting part (153).

3. The fluid handling assembly of claim 2, wherein the depth of the bladder (1513) is greater than the thickness of the solid portion (152).

4. The fluid handling assembly of claim 2, wherein: and the connecting part (153) is provided with a limiting protrusion (1530).

5. Fluid pump, characterized by comprising a fluid operating assembly (1) according to any of claims 1-4.

6. The fluid pump of claim 5, further comprising a drive assembly (2), the drive assembly (2) comprising a motor (21), a base (22), an eccentric (23), a connecting shaft (24), a curved lever (25);

The motor (21) is used for providing driving force,

The base (22) is arranged under the diaphragm seat (14), and the motor (21) is arranged under the base (22);

One end of the eccentric wheel (23) is connected with an output shaft of the motor (21), an eccentric hole (231) is formed in the other end of the eccentric wheel (23), a central hole (250) is formed in the curved rod (25), one end of the connecting shaft (24) is connected with the eccentric hole (231), the other end of the connecting shaft is connected with the central hole (250), and the curved rod (25) is connected with the diaphragm (15);

The fluid pump further comprises a buckle (3), clamping grooves (30) are formed in the outer walls of the pump cover (11), the valve seat (12), the diaphragm seat (14) and the base (22), and the buckle (3) is matched with the clamping grooves (30) to integrally connect the pump cover (11), the valve seat (12), the diaphragm seat (14) and the base (22).