A micro diaphragm pump with integrated leak-proof, impurity-proof and pressure-relieving functions

Abstract

The present invention discloses a micro-diaphragm pump with integrated leak-proof, impurity-proof and pressure-relief functions, which is provided with a base nested and connected to a motor; and comprises: a crank nested and connected to the upper end of the inner surface of the base, and the inner surface of the crank is nested and assembled with a steel ball and a rotating shaft, and the upper end of the outer surface of the rotating shaft is nested and assembled with a connecting rod. The micro-diaphragm pump with integrated leak-proof, impurity-proof and pressure-relief functions is provided with a filter screen that is convenient for position limiting to filter impurities, and after fluid enters the diaphragm pump, a portion of the water pressure will squeeze the water outlet cushions on both sides of the pressure stop seat, and when the middle position of the water outlet cushion is deformed upward, water is discharged. If the water pressure on both sides of the pressure stop seat is too high, it will cause pressure on the water outlet cushion, blocking the water outlet to stop leaks, and prompting the water flow to continuously circulate in the diaphragm pump to squeeze the pressure stop seat and the water outlet cushion upward and form pressure relief. After the water discharge is normal, the pressure relief spring, whose elastic force is greater than that of the water outlet spring, controls the pressure stop seat to squeeze the water outlet cushion back to its original position under elasticity, so that the pump can continue to work normally.

Description

Technical Field

[0001] The present invention relates to the technical field of diaphragm pumps, in particular to a miniature diaphragm pump with integrated functions of leak-proofing, impurity prevention and pressure relief. Background Art

[0002] The diaphragm pump transports liquids by expanding and contracting the valve and cooperating with the check valve. It can be used in coffee machines, water dispensers, water purifiers, mops, etc. There are many types and styles of diaphragm pumps. Due to its small size, excellent performance and low cost, it has gradually replaced the electromagnetic water pump. However, there are still some problems with the existing diaphragm pumps when they are working.

[0003] In the prior art, the authorization disclosure (announcement) number: CN217794758U is "a diaphragm pump capable of preventing blockage". Among them, the utility model relates to the field of anti-blocking, specifically a diaphragm pump capable of preventing blockage, comprising: a diaphragm pump main body, the diaphragm pump main body is provided with a mounting shell, a motor is arranged in the mounting shell, a transmission end of the motor is provided with a rotating shaft, one end of the rotating shaft is provided with a bevel gear, a filter is installed on the inner wall of the diaphragm pump main body, and a brush is provided on the right side of the filter, and the bristles are fixed on the surface of the brush base; Beneficial effect: the diaphragm pump capable of preventing blockage proposed by the utility model can effectively filter particulate matter impurities in the fluid medium by utilizing the setting of the filter, and prevent impurities from entering the interior of the diaphragm pump main body and accumulating to cause blockage, and the meshing action between the bevel gear and the second bevel gear is utilized to enable the connecting rod to rotate synchronously when the motor is working, and then rotate through the brush base, so that the filter can be cleaned, effectively preventing the mesh of the filter from being blocked, and ensuring the smooth filtering function of the filter;

[0004] During the operation of the above device, when the filter is used for a long time, impurities will accumulate on the surface of the filter, causing the filter to be blocked. The motor can be started to rotate the shaft, and the meshing action between the bevel gear and the second bevel gear can be used to make the connecting rod rotate synchronously when the motor is working, and then rotate through the brush base, so that the filter can be cleaned, effectively avoiding the clogging of the mesh of the filter and ensuring the smooth filtering function of the filter. However, when cleaning, it is easy to cause a certain amount of crushing of the filtered impurities, making the subsequent outflowing liquid unusable and inconvenient to disassemble and clean.

[0005] In addition, in the prior art, the authorization disclosure (announcement) number: CN204004632U is "A new type of sanitary diaphragm pump". The utility model relates to the field of valve technology, especially a new type of sanitary diaphragm pump, which is characterized by including: a pressure reducing filter plate, a pressure reducing chamber, a metal corrugated plate, a valve body, a pressure blocking chamber, a deceleration block, a deceleration guide hole, a pressure regulating bolt, an inlet, a pressure relief port, a pressure regulating bolt, and a metal plate. The new type of sanitary diaphragm pump is provided with a pressure regulating bolt on the metal corrugated plate. The pressure regulating bolt is set according to the pressure borne by the pipeline, so that the pipeline can automatically open the deceleration guide hole after bearing a certain pressure, thereby increasing the pressure discharge, and the pressure The function of the pressure regulating plug is to automatically release the pressure to the pressure-blocking chamber according to the pressure of the pipeline medium, so as to maintain the pressure balance of the medium in the valve body. When the pipeline medium exceeds the pressure or gas impurities enter, it automatically enters the valve body inlet. After the pressure reducing filter plate filters the medium slag, the medium passes through the pressure reducing chamber and enters the deceleration diversion hole. Its pressure exceeds the deadweight of the pressure regulating plug, and the pressure regulating plug is automatically pushed open. When the medium enters the pressure-blocking chamber, the deceleration block at the upper end of the pressure-blocking chamber adjusts the direction of the fluid medium and discharges it directly from the pressure relief port. The medium that exceeds the pressure will automatically push open the pressure regulating bolt, quickly eliminate the pipeline pressure or gas impurities, automatically adjust the pipeline medium pressure balance, eliminate pipeline erosion gas, and prevent pipeline explosion.

[0006] During the operation of the above-mentioned device, when the pipeline medium exceeds the pressure or gas impurities enter, it automatically enters the valve body inlet, and after the pressure reducing filter plate filters the medium residue, the medium passes through the pressure reducing chamber and enters the deceleration guide hole. Its pressure exceeds the deadweight of the pressure regulating plug, and the pressure regulating plug is automatically pushed open. When the medium enters the pressure resistance chamber, the deceleration block at the upper end of the pressure resistance chamber adjusts the direction of the fluid medium and discharges it directly from the pressure relief port. The medium that exceeds the pressure will automatically push open the pressure regulating bolt, quickly eliminate the pipeline pressure or gas impurities, and automatically adjust the pipeline medium pressure balance to prevent the pipeline from exploding. However, during use, the volume of the component determines the pressure generated by gravity. The pressure is limited within the range of the overall component, and it is inconvenient to replace it according to usage. Summary of the Invention

[0007] The purpose of the present invention is to provide a miniature diaphragm pump with leak-proof, impurity-proof and pressure-relief integrated functions, so as to solve the problem raised in the above background technology that during cleaning, the filtered impurities are easily crushed to a certain extent, making the subsequent outflowing liquid unusable, and it is inconvenient to disassemble and clean. The volume of the components determines the pressure generated by gravity, and the pressure is limited within the range of the entire component, which is inconvenient to replace according to usage, and the sealing of the connections between the components cannot be effectively improved.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a micro diaphragm pump with integrated leak-proof, impurity-proof and pressure-relieving functions, provided with a base nested and connected to a motor;

[0009] The crank is nested and connected to the upper end of the inner surface of the base, and the inner surface of the crank is nested and assembled with a steel ball and a rotating shaft, and the upper end of the outer surface of the rotating shaft is nested and assembled with a connecting rod, and the inner surface of the connecting rod is nested and assembled with a diaphragm assembly;

[0010] The diaphragm bracket is installed on the upper surface of the base, and the upper surface of the diaphragm bracket is connected to the middle plate, and the outer surface of the middle plate is nested and connected to the water inlet valve, and the outer surface of the middle plate is limitedly connected to the water outlet valve at the center axis;

[0011] A sealing ring is nested and connected to the upper surface of the middle plate, and the upper surface of the sealing ring is connected to a valve bracket, and a water outlet is installed at the front end of the outer surface of the valve bracket, and a filter is nested and connected to the upper surface of the valve bracket;

[0012] A water outlet pad is fitted and connected to the upper surface end of the valve bracket, and the upper surface of the water outlet pad is fitted and connected to the water outlet seat, and the upper end of the inner surface of the water outlet seat is nested and connected to the water outlet spring, while the upper end of the outer surface of the water outlet spring is fitted and connected to the upper cover, and the front end of the outer surface of the upper cover is installed with a water inlet;

[0013] The pressure stop seat is nested and connected to the outer surface edge of the water outlet seat, and the outer side of the outer surface of the pressure stop seat is nested with a pressure relief spring, and the outer side of the upper end of the outer surface of the pressure relief spring is nested with an upper cover.

[0014] Through the above structure, stable rotation adjustment is formed during use, and adsorption and release are formed, and effective flow is achieved in conjunction with the water inlet valve and the water outlet valve, thereby improving the stability of transportation, and forming filtering and leakage prevention.

[0015] Preferably, the crank and the base form a nested rotating structure, and the crank, the steel ball and the rotating shaft form a limited built-in structure, and the steel ball is located on the lower side of the rotating shaft. At the same time, the crank forms a linked rotating structure with the connecting rod through the rotating shaft.

[0016] Through the above structure, stable nesting assembly is performed during use, thereby improving the stability of adjustment and reducing the wear of device parts.

[0017] Preferably, a limiting ball is installed on the upper end of the outer surface of the diaphragm assembly, and an extrusion block is installed on the upper surface of the limiting ball, and an extrusion diaphragm is installed on the upper surface of the extrusion block. At the same time, a positioning layer with holes is installed on the upper end of the outer surface of the extruded diaphragm, and the outer surface of the positioning layer is nested and connected with a diaphragm bracket.

[0018] Through the above structure, stable overall assembly is performed during use, which prevents falling off and improves the stability of the connection.

[0019] Preferably, the limiting ball, the diaphragm assembly, the extrusion block, the extruded diaphragm and the positioning layer form an integrated structure, and the extruded diaphragm is set at equal angles with respect to the central axis of the outer surface of the positioning layer, and the diaphragm assembly forms a limiting through-structure through the limiting ball, the extrusion block and the connecting rod.

[0020] Through the above structure, the whole assembly is stably assembled to prevent damage during use, and nesting is formed to stably form mobile extrusion.

[0021] Preferably, the diaphragm bracket and the base are built-in nested structures, and the diaphragm bracket forms a sealing structure through the middle plate, and the middle plate and the water inlet valve form a limiting snap-fit ​​structure. At the same time, the central axis of the outer surface of the water inlet valve is consistent with the central axis of the extruded diaphragm, and the water outlet valve and the middle plate form a built-in snap-fit ​​structure.

[0022] Through the above structure, stable nesting assembly is performed during use, the sealing is increased, and the snap-fit ​​structure is used to prevent falling off.

[0023] Preferably, the valve bracket forms a sealing structure with the middle plate through a sealing ring, and the valve bracket is embedded in the edge of the outer surface of the water outlet, and the valve bracket and the filter screen form a limited filtering structure.

[0024] Through the above structure, a stable connection is performed during use, forming a limited assembly and a stable nested filtration to prevent the filter plates from moving.

[0025] Preferably, the water outlet pad and the valve bracket form a limiting fitting structure, and the water outlet pad forms an elastic structure with the upper cover through the water outlet seat and the water outlet spring, and the middle end material of the outer surface of the water outlet pad is made of flexible material. At the same time, the water outlet pad and the water outlet seat, the water outlet spring and the upper cover are arranged on the same central axis.

[0026] Through the above structure, it can be effectively fitted during use to form automatic drainage.

[0027] Preferably, the pressure stop seat and the water outlet seat form a nested structure with the same central axis, and the pressure stop seat and the upper cover form a limiting elastic structure through a pressure relief spring, and the elasticity of the pressure relief spring is greater than the elasticity of the water outlet spring.

[0028] Through the above structure, it can effectively prevent the one-way valve from acting when in use. When the water pressure is high, the pressure stop seat will not cause internal water leakage and pressure relief. After the pressure relief is completed, it will be reset through the large elastic pressure relief spring, and the small elastic water outlet spring will continue to work normally.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The micro diaphragm pump with leak-proof, impurity-proof and pressure-relief integrated function is provided with a filter screen that is easy to limit and use. The nested assembly between the upper cover and the valve bracket prevents the filter screen from moving, and effectively enters the liquid for filtering and conveying, thereby improving the stability of use. The rotatable connecting rod assembled in conjunction with the diaphragm assembly is used to adjust the diaphragm assembly to squeeze the extrusion diaphragm to control the flow of the incoming liquid, improve the flow stability, effectively convey materials, and improve the overall stability of the diaphragm pump. After the fluid enters the diaphragm pump, part of it participates in the conveying, and part is on both sides of the pressure stop seat. When the fluid is conveyed, the water outlet pad is deformed in the direction away from the water outlet, so that the water outlet is opened and the fluid is discharged. When the water pressure is too high, the water pressure acts on the pressure stop seat through the water on both sides of the pressure stop seat, so that the pressure stop seat exerts greater pressure on the water outlet pad, causing the water outlet pad to deform in the direction close to the water outlet, thereby blocking the water outlet and achieving the effect of stopping leakage. The greater the water pressure, the greater the pressure exerted by the pressure stop seat on the water outlet pad, which will not cause leakage.

[0031] 2. The micro diaphragm pump with leak-proof, impurity-proof and pressure-relief function is equipped with a crank for nested assembly of steel balls and rotating shafts, and the control connecting rod is adjusted to control the positioning and contraction of the extruded diaphragm, so that the liquid passes through the water inlet valve and flows to the water outlet valve. The flow of the liquid is then controlled by the upward movement of the water outlet pad, thereby improving the flow stability and preventing the mixing of the liquid at the water inlet and the water outlet. It acts as a one-way valve in conjunction with the pressure stop seat. When the water pressure is high, with this valve in place, internal leakage will not occur, thereby improving the use stability and increasing the cleanliness. The water outlet spring is less elastic than and is built into the inner side of the pressure relief spring, forming a stable nest and cooperating with the water outlet seat and the deformed water outlet pad for drainage.

[0032] 3. The micro diaphragm pump with leak-proof, impurity-proof and pressure-relief function is equipped with a stably assembled diaphragm assembly, and is nested and assembled with a limiting ball to form a connecting rod. It is used in conjunction with an extrusion block and an extrusion diaphragm to form up and down contraction, as well as the use of a positioning layer, which is nested and connected between the diaphragm bracket and the middle plate. While positioning, it is convenient for water to enter and squeeze out, forming a rotating cyclic extrusion motion to improve the stability of the flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of the base of the present invention;

[0034] Figure 2 This is a schematic diagram of a half-section three-dimensional structure of the base of the present invention;

[0035] Figure 3 It is a schematic diagram of a partially cutaway three-dimensional structure of a connecting rod according to the present invention;

[0036] Figure 4 It is a schematic diagram of a partially cutaway three-dimensional structure of a diaphragm assembly of the present invention;

[0037] Figure 5 This is a schematic diagram of a half-section three-dimensional structure of the filter screen of the present invention;

[0038] Figure 6 This is a schematic diagram of a semi-sectional three-dimensional structure of the pressure stop seat of the present invention;

[0039] Figure 7 It is a schematic diagram of the exploded three-dimensional structure of the present invention.

[0040] In the figure: 1. Base; 2. Crank; 3. Steel ball; 4. Rotating shaft; 5. Connecting rod; 6. Diaphragm assembly; 601. Limiting ball; 602. Extrusion block; 603. Extrusion diaphragm; 604. Positioning layer; 7. Diaphragm bracket; 8. Middle plate; 9. Water inlet valve; 10. Water outlet valve; 11. Sealing ring; 12. Valve bracket; 13. Water outlet; 14. Filter screen; 15. Water outlet pad; 16. Water outlet seat; 1601. Pressure stop seat; 1602. Pressure relief spring; 17. Water outlet spring; 18. Upper cover; 19. Water inlet. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] See also Figure 1-7 , the present invention provides a technical solution: a miniature diaphragm pump with leak-proof, impurity-proof and pressure-relieving functions, provided with a base 1 nested and connected to a motor;

[0043] The crank 2 is nested and connected to the upper end of the inner surface of the base 1, and the inner surface of the crank 2 is nested and assembled with a steel ball 3 and a rotating shaft 4, and the upper end of the outer surface of the rotating shaft 4 is nested and assembled with a connecting rod 5, and the inner surface of the connecting rod 5 is nested and assembled with a diaphragm assembly 6;

[0044] The diaphragm bracket 7 is mounted on the upper surface of the base 1, and the upper surface of the diaphragm bracket 7 is connected to the middle plate 8, and the outer surface of the middle plate 8 is nested with the water inlet valve 9, and the outer surface of the middle plate 8 is limitedly connected to the water outlet valve 10 at the center axis;

[0045] The crank 2 and the base 1 form a nested rotating structure, and the crank 2, the steel ball 3 and the rotating shaft 4 form a limited built-in structure, and the steel ball 3 is located on the lower side of the rotating shaft 4. At the same time, the crank 2 forms a linked rotating structure with the connecting rod 5 through the rotating shaft 4.

[0046] A limiting ball 601 is installed on the upper end of the outer surface of the diaphragm assembly 6, and an extrusion block 602 is installed on the upper surface of the limiting ball 601, and an extrusion diaphragm 603 is installed on the upper surface of the extrusion block 602. At the same time, a positioning layer 604 with holes is installed on the upper end of the outer surface of the extrusion diaphragm 603, and the outer surface of the positioning layer 604 is nested and connected with a diaphragm bracket 7.

[0047] The limiting ball 601 forms an integrated structure with the diaphragm assembly 6, the extrusion block 602, the extruded diaphragm 603 and the positioning layer 604, and the extruded diaphragm 603 is set at equal angles with respect to the central axis of the outer surface of the positioning layer 604, and the diaphragm assembly 6 forms a limiting through structure with the connecting rod 5 through the limiting ball 601 and the extrusion block 602.

[0048] The diaphragm bracket 7 and the base 1 are built into a nested structure, and the diaphragm bracket 7 forms a sealing structure with the middle plate 8, and the middle plate 8 and the water inlet valve 9 form a limiting snap-fit ​​structure. At the same time, the center axis of the outer surface of the water inlet valve 9 is consistent with the center axis of the extruded diaphragm 603, and the water outlet valve 10 and the middle plate 8 form a built-in snap-fit ​​structure.

[0049] When in use, the rotation of the motor assembled on the lower surface of the base 1 is used to control the rotation of the crank 2 on the main shaft, and the steel ball 3 built into the crank 2 and the rotating shaft 4 are rotated simultaneously. The use of the steel ball 3 reduces the wear on the crank 2, and can drive the connecting rod 5 nested at the upper end of the outer surface of the rotating shaft 4 to form an effective angle change, driving the extrusion diaphragm 603 assembled on the through-connected diaphragm assembly 6 to perform telescopic extrusion to form the entry and discharge of liquid. When the connecting rod 5 is in use, the limiting between the limiting ball 601 and the extrusion block 602 assembled by the diaphragm assembly 6 prevents the connecting rod 5 from falling off during use. The limiting ball 601, the extrusion block 602 and the extrusion diaphragm 603 assembled by the diaphragm assembly 6 are installed on the positioning layer 604 to form a As a whole, it cooperates with the penetration of the diaphragm bracket 7 by the extruded diaphragm 603, and the positioning layer 604 assembled by the extruded diaphragm 603 is attached to the upper surface of the diaphragm bracket 7 and the lower surface of the middle plate 8 to form an effective limit seal. While reducing leakage, it cooperates with the water inlet valve 9 nested in the middle plate 8 to absorb liquid and store it on the inner surface of the extruded diaphragm 603, and cooperates with the rotation of the connecting rod 5 and the re-extrusion of the extrusion block 602 to discharge the liquid through the water outlet valve 10, flow to the water outlet valve 10 and the upper end of the inner surface of the middle plate 8, and after the inner cavity between them is filled, it will be effectively and stably discharged through the use of the water outlet pad 15, thereby improving the stability of use and reducing the space occupied by the working part when the diaphragm pump and the check valve are assembled.

[0050] A sealing ring 11 is nested and connected to the upper surface of the middle plate 8, and a valve bracket 12 is connected to the upper surface of the sealing ring 11, and a water outlet 13 is installed at the front end of the outer surface of the valve bracket 12. At the same time, a filter screen 14 is nested and connected to the upper surface of the valve bracket 12;

[0051] The water outlet pad 15 is fitted and connected to the upper surface end of the valve bracket 12, and the upper surface of the water outlet pad 15 is fitted and connected to the water outlet seat 16, and the upper end of the inner surface of the water outlet seat 16 is nested and connected to the water outlet spring 17, and the upper end of the outer surface of the water outlet spring 17 is fitted and connected to the upper cover 18, and the water inlet 19 is installed at the front end of the outer surface of the upper cover 18.

[0052] The valve bracket 12 forms a sealing structure with the middle plate 8 through the sealing ring 11, and the valve bracket 12 and the outer surface edge of the water outlet 13 are embedded and installed, and the valve bracket 12 and the filter screen 14 form a limited filtering structure.

[0053] The water outlet pad 15 and the valve bracket 12 form a limiting fitting structure, and the water outlet pad 15 forms an elastic structure with the upper cover 18 through the water outlet seat 16 and the water outlet spring 17, and the middle end material of the outer surface of the water outlet pad 15 is made of flexible material. At the same time, the water outlet pad 15 and the water outlet seat 16, the water outlet spring 17 and the upper cover 18 are arranged on the same central axis.

[0054] The pressure stop seat 1601 is nested and connected to the outer surface edge of the water outlet seat 16, and the pressure relief spring 1602 is nested and connected to the outer side of the outer surface of the pressure stop seat 1601, and the upper cover 18 is nested and connected to the outer side of the upper end of the outer surface of the pressure relief spring 1602.

[0055] The pressure stop seat 1601 and the water outlet seat 16 form a nested structure with the same central axis, and the pressure stop seat 1601 forms a limiting elastic structure with the upper cover 18 through the pressure relief spring 1602, and the elasticity of the pressure relief spring 1602 is greater than the elasticity of the water outlet spring 17.

[0056] When the motor at the bottom of the base 1 is used, the liquid is sucked in from the water inlet 19 assembled on the upper cover 18, and flows to the upper end of the filter screen 14 nested and assembled on the upper surface of the valve bracket 12. After filtering, it moves to the left and right ends of the inner surface of the valve bracket 12, and cooperates with the circular holes on the left and right ends of the valve bracket 12 to flow downward to the small circular holes set on the outer surface of the middle plate 8. Cooperating with the use of the water inlet valve 9 and the water outlet valve 10, it flows to the upper surface of the water outlet valve 10 and the middle plate 8, and moves the liquid upward through the arc-shaped holes on the middle end edge of the outer surface of the valve bracket 12. The contraction of the extrusion diaphragm 603 forms a stable pressure to squeeze the water outlet pad 15 attached to the upper surface of the valve bracket 12, and squeeze the water outlet spring 17 on the water outlet seat 16 attached to the water outlet pad 15 to contract, and discharge the liquid through the water outlet 13. When the diaphragm pump is under a certain water level, the pressure relief is achieved due to the addition of the pressure stop seat 1601. Under the action of spring 1602, it can be guaranteed that there will be no leakage. Since after water comes in from the water inlet 19, the water will reach both sides of the pressure stop seat 1601, so the influence of the water level is eliminated. Theoretically, no matter how high the water level pressure difference is, there will be no leakage. Secondly, a pressure stop seat 1601 connected to a pressure relief spring 1602 is added to the outer ring of the water outlet pad 15 to prevent water blocking. When the water outlet 13 is blocked, the pressure stop seat 1601 opens to prevent the internal pressure from rising and damaging the diaphragm pump. After the pressure is released, the pressure stop seat 1601 is reset by the elasticity of the pressure relief spring 1602, and when the pressure stop seat 1601 is reset, the elasticity of the water outlet spring 17 is less than the elasticity of the pressure relief spring 1602, that is, when the internal pressure of the pump body is normal, the pressure relief spring 1602 resets the pressure stop seat 1601 through high elasticity, and the water outlet spring 17 elastically controls the water outlet seat 16, so that the pump body can work normally.

[0057] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A micro diaphragm pump with integrated leak-proof, impurity-proof and pressure-relieving functions, provided with a base (1) nested and connected to a motor; It is characterized in that include: A crank (2) is nested and connected to the upper end of the inner surface of the base (1), and the inner surface of the crank (2) is nested and assembled with a steel ball (3) and a rotating shaft (4), and the upper end of the outer surface of the rotating shaft (4) is nested and assembled with a connecting rod (5), and the inner surface of the connecting rod (5) is nested and assembled with a diaphragm assembly (6); A limiting ball (601) is installed on the upper end of the outer surface of the diaphragm assembly (6), and an extrusion block (602) is installed on the upper surface of the limiting ball (601), and an extrusion diaphragm (603) is installed on the upper surface of the extrusion block (602). A positioning layer (604) with holes is installed on the upper end of the outer surface of the extrusion diaphragm (603), and a diaphragm bracket (7) is nested and connected to the outer surface of the positioning layer (604); A diaphragm bracket (7) is mounted on the upper surface of the base (1), and the upper surface of the diaphragm bracket (7) is connected to a middle plate (8), and an outer surface of the middle plate (8) is nested and connected to a water inlet valve (9), while a water outlet valve (10) is limitedly connected to the center axis of the outer surface of the middle plate (8); A sealing ring (11) is nested and connected to the upper surface of the middle plate (8), and the upper surface of the sealing ring (11) is connected to a valve bracket (12), and a water outlet (13) is installed at the front end of the outer surface of the valve bracket (12), and a filter screen (14) is nested and connected to the upper surface of the valve bracket (12); A water outlet pad (15) is fitted and connected to the upper surface end of the valve bracket (12), and the upper surface of the water outlet pad (15) is fitted and connected to the water outlet seat (16), and the upper end of the inner surface of the water outlet seat (16) is nested and connected to the water outlet spring (17), and the upper end of the outer surface of the water outlet spring (17) is fitted and connected to the upper cover (18), and the front end of the outer surface of the upper cover (18) is installed with a water inlet (19); The pressure stop seat (1601) is nested and connected to the outer surface edge of the water outlet seat (16), and the outer side of the outer surface of the pressure stop seat (1601) is nested and connected to a pressure relief spring (1602), and the outer side of the upper end of the outer surface of the pressure relief spring (1602) is nested and connected to an upper cover (18).

2. A micro diaphragm pump with leak-proof, impurity-proof and pressure-relieving function according to claim 1, characterized in that: The crank (2) and the base (1) form a nested rotating structure, and the crank (2) forms a limited built-in structure with the steel ball (3) and the rotating shaft (4), and the steel ball (3) is located on the lower side of the rotating shaft (4). At the same time, the crank (2) forms a linked rotating structure with the connecting rod (5) through the rotating shaft (4).

3. The micro diaphragm pump with leak-proof, impurity-proof and pressure-relieving function according to claim 1, characterized in that: The limiting ball (601) forms an integrated structure with the diaphragm assembly (6), the extrusion block (602), the extruded diaphragm (603) and the positioning layer (604), and the extruded diaphragm (603) is arranged at equal angles with respect to the central axis of the outer surface of the positioning layer (604). The diaphragm assembly (6) forms a limiting through-structure with the connecting rod (5) through the limiting ball (601) and the extrusion block (602).

4. The micro diaphragm pump with leak-proof, impurity-proof and pressure-relieving function according to claim 1, characterized in that: The diaphragm bracket (7) and the base (1) are built-in nested structures, and the diaphragm bracket (7) forms a sealing structure with the middle plate (8), and the middle plate (8) and the water inlet valve (9) form a limited snap-fit ​​structure, while the center axis of the outer surface of the water inlet valve (9) is consistent with the center axis of the extruded diaphragm (603), and the water outlet valve (10) and the middle plate (8) form a built-in snap-fit ​​structure.

5. The micro diaphragm pump with leak-proof, impurity-proof and pressure-relieving function according to claim 1, characterized in that: The valve bracket (12) forms a sealing structure with the middle plate (8) through the sealing ring (11), and the valve bracket (12) and the outer surface edge of the water outlet (13) are embedded and installed, and the valve bracket (12) and the filter screen (14) form a limited filtering structure.

6. The micro diaphragm pump with leak-proof, impurity-proof and pressure-relieving function according to claim 1, characterized in that: The water outlet pad (15) and the valve bracket (12) form a limited fitting structure, and the water outlet pad (15) forms an elastic structure with the upper cover (18) through the water outlet seat (16) and the water outlet spring (17), and the middle end material of the outer surface of the water outlet pad (15) is made of flexible material, and the water outlet pad (15) and the water outlet seat (16), the water outlet spring (17) and the upper cover (18) are arranged on the same central axis.

7. The micro diaphragm pump with leak-proof, impurity-proof and pressure-relieving function according to claim 1, characterized in that: The pressure stop seat (1601) and the water outlet seat (16) form a nested structure with the same central axis, and the pressure stop seat (1601) forms a limiting elastic structure with the upper cover (18) through the pressure relief spring (1602), and the elasticity of the pressure relief spring (1602) is greater than the elasticity of the water outlet spring (17).

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