Integrated one-way valve plate and micro diaphragm pump thereof

Abstract

The integrated one-way valve plate comprises a water outlet valve part arranged in a water outlet cavity in the top of a valve seat and a water inlet valve part which is integrally formed, surrounds the periphery of the water outlet valve part and can cover a water inlet cavity. The water inlet valve part is provided with a plurality of flat-mouth-shaped water inlet check valve mouths used for guiding fluid in the water inlet cavity into the water outlet cavity, and the water outlet valve part is provided with flat-mouth-shaped water outlet check valve mouths used for guiding fluid in the water inlet of the diaphragm pump into the water inlet cavity. According to the miniature diaphragm pump, the water inlet valve part and the water outlet valve part are integrally formed through soft plastic, the number of independent assemblies needing to be processed is reduced, and therefore the production efficiency and the installation precision of the miniature diaphragm pump in the production and assembly process are improved; and the complexity and the time cost of manual operation are reduced.

Description

Technical Field

[0001] The utility model relates to the field of micro diaphragm pumps, in particular to an integrated one-way valve sheet and a micro diaphragm pump thereof. Background Art

[0002] Micro diaphragm pumps are small pumps widely used in many fields such as medical, chemical, food and environmental protection. Due to its ability to accurately control fluid flow and its corrosion and wear resistance, it plays a key role in infusion pumps, ventilators, chemical delivery pumps, juice and dairy product delivery, and wastewater treatment equipment.

[0003] The overall structure of a micro diaphragm pump includes a diaphragm, a pump chamber, a one-way valve diaphragm, a drive mechanism, and inlet and outlet connections. The diaphragm is usually made of elastic materials such as rubber or fluororubber, and is driven by a motor or pneumatic system to reciprocate, thereby changing the volume of the pump chamber and pushing the liquid in and out. The diaphragm in the pump chamber moves up and down continuously during operation. During the suction stage, the diaphragm moves downward to reduce the pressure inside the pump chamber, and the water inlet valve diaphragm opens under the action of the pressure difference, and the liquid is sucked into the pump chamber; during the discharge stage, the diaphragm moves upward to increase the pressure inside the pump chamber, and the water outlet valve diaphragm opens under the action of the pressure difference, and the liquid is discharged from the pump chamber.

[0004] The one-way valve diaphragm is a vital component in the micro diaphragm pump, which is responsible for controlling the one-way flow of the liquid and preventing backflow. The valve disc is usually made of elastic materials such as rubber, silicone or fluororubber, installed on a hard valve seat, and sometimes equipped with a spring to enhance the sealing and maintain the closed state. They automatically open and close according to the pressure difference during the suction and discharge process to ensure that the liquid flows in the predetermined direction.

[0005] The current one-way valve diaphragm installation method is usually to install a corresponding one-way valve diaphragm separately on each water inlet. The one-way valve diaphragm is fixed by inserting the plug rod on the one-way valve diaphragm into the preset plug hole in the water inlet. Similarly, a one-way valve diaphragm is also installed separately on each water outlet, and the water outlet is covered by snapping. This installation method is very cumbersome and time-consuming during the assembly process, and the one-way valve diaphragm needs to be manually installed and fixed to the corresponding water inlet and outlet holes one by one. Due to this manual operation method, the existing one-way valve diaphragm installation process is difficult to apply to automated production lines, resulting in low production efficiency. In addition, the manual operation process may also lead to improper installation or missing installation, which affects the quality and performance of the product.

[0006] Therefore, the one-way valve diaphragm used in the existing micro-diaphragm pump needs to be further optimized and improved. Utility Model Content

[0007] The purpose of the utility model is to provide an integrated one-way valve sheet and a micro diaphragm pump thereof which are suitable for the needs of an automated production line, reduce the steps and time of manual operation, help improve the production efficiency of a micro diaphragm pump, and ensure the consistency and reliability of the product.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following scheme: an integrated one-way valve plate, comprising:

[0009] A water outlet valve portion, which is arranged on the top of the valve seat and can cover the water outlet cavity of the valve seat, and is used to isolate the communication between the water inlet cavity of the valve seat and the water outlet cavity of the valve seat;

[0010] A water inlet valve portion, which surrounds the periphery of the water outlet valve portion and can cover the water inlet cavity entrance of the valve seat, and is used to isolate the communication between the water inlet cavity of the valve seat and the water inlet of the diaphragm pump;

[0011] The water inlet valve part and the water outlet valve part are integrally formed of soft plastic;

[0012] At least one water outlet check valve nozzle, which is arranged on the water outlet valve portion and is used to introduce the fluid in the water inlet cavity of the valve seat into the water outlet cavity of the valve seat and prevent the fluid in the water outlet cavity of the valve seat from flowing back into the water inlet cavity of the valve seat;

[0013] A plurality of water inlet check valve nozzles are arranged on the water inlet valve portion, each water inlet check valve nozzle corresponds to an inlet connected to the water inlet cavity on the valve seat, and the water inlet check valve nozzle can guide the fluid in the water inlet of the diaphragm pump into the water inlet cavity of the valve seat, and can prevent the fluid in the water inlet cavity of the valve seat from flowing back into the water inlet of the diaphragm pump.

[0014] By integrally molding the inlet valve and outlet valve parts from soft plastic, this design reduces the number of independent components that need to be handled during assembly and simplifies the production process. Due to the one-piece design, the entire one-way valve sheet only needs to be installed once, rather than installing multiple independent one-way valve diaphragms one by one. This greatly reduces the time and complexity of manual operation and is more suitable for automated production lines. It can be installed by a robotic arm or other automated equipment, improves installation accuracy, and reduces problems of improper installation or missing installation caused by manual operation, thereby improving product quality. In addition, the one-piece inlet valve and outlet valve parts have better overall sealing performance than the existing single one-way valve diaphragm, reducing the risk of leakage that may occur at the connection of multiple components.

[0015] As an optimal solution of the utility model, the water outlet valve portion is embedded in the valve seat in a concave shape, and the water outlet check valve mouth is arranged on the top of the water outlet valve portion in an upwardly protruding manner. The bottom of the water outlet check valve mouth passes through the bottom surface of the water outlet valve portion and is connected with the water outlet hole in the valve seat.

[0016] As a preferred embodiment of the present invention, the water inlet check valve nozzles are arranged in a ring-shaped manner and protrude downwardly on the bottom surface of the water inlet valve portion, and the bottom end of the water inlet check valve nozzle extends into the entrance of the water inlet cavity of the valve seat.

[0017] As a further solution of the utility model, the water outlet check valve nozzle includes a first valve column integrally connected to the top surface of the water outlet valve portion, a first water outlet nozzle in the shape of a flat mouth is connected to the top of the first valve column, a first water outlet channel whose bottom end can pass through the bottom surface of the water outlet valve portion and be connected to the water outlet hole in the valve seat is provided in the first valve column, and a first water outlet seam which can connect the first water outlet with the water outlet cavity of the valve seat in one direction is provided at the top of the first water outlet nozzle.

[0018] As a further solution of the utility model, the water inlet check valve nozzle includes a second valve column integrally connected to the bottom surface of the water inlet valve portion, a second water outlet nozzle in the shape of a flat mouth is connected to the bottom of the second valve column, a second water outlet channel whose bottom end can pass through the top surface of the water inlet valve portion and is connected to the water inlet of the diaphragm pump above is provided in the second valve column, and a second water outlet channel whose bottom end can pass through the top surface of the water inlet valve portion and is connected to the water inlet of the upper diaphragm pump is provided at the bottom end of the second water outlet channel, which can enable the second water outlet to be connected to the water inlet chamber of the valve seat in one way.

[0019] The flat mouth design of the water outlet check valve mouth and the water inlet check valve mouth ensures fluid control in different directions, allowing the liquid to flow smoothly during the suction and discharge process, while preventing backflow and ensuring the reliable operation of the diaphragm pump.

[0020] The utility model also provides a solution for a micro diaphragm pump, including a pump body composed of a valve seat, a diaphragm seat and an end cover, the bottom end of the pump body is connected to a tubular base, a driving member is provided at the bottom of the base, the diaphragm seat is provided with a plurality of diaphragm chambers, leather cups are respectively accommodated in the diaphragm chambers, an actuating member connected between the bottom end of the leather cup and the driving member and capable of agitating the leather cups one by one through the driving member is provided in the base, the top of the diaphragm seat is connected to the bottom of the valve seat, a water outlet cavity with an open top is provided in the center of the valve seat, a water outlet hole which can be connected to the corresponding leather cup below is penetrated on the bottom surface of the water outlet cavity, a plurality of water inlet cavities corresponding to the leather cup below are provided at intervals around the circumference of the water outlet cavity, the bottom of the water inlet cavity is connected to the corresponding leather cup, and the water inlet cavity The top is open, and the end cover is covered on the top of the valve seat. The bottom of the end cover is provided with a concave cavity which is concave upward, and the concave cavity is provided with a spacer ring which can be buckled on the top of the periphery of the water outlet valve part. The top opening of the water outlet check valve mouth points to the concave cavity in the spacer ring. A water outlet pipe which can be connected with the concave cavity in the spacer ring is provided on the top of the end cover, and the concave cavity outside the spacer ring is connected with the water inlet cavity. A water inlet pipe which can be connected with the concave cavity outside the spacer ring is provided on the top of the end cover. The concave cavity between the top of the valve seat and the bottom of the end cover is covered with the integrated one-way valve sheet as described above. The water outlet valve part is embedded in the water inlet cavity, and the water inlet valve part is clamped between the opening at the top of the water inlet cavity and the concave cavity outside the spacer ring. Each of the water inlet check valve mouths extends into each corresponding water inlet cavity.

[0021] As a preferred embodiment of the present invention, downwardly extending connecting rods are respectively connected to the bottom of the leather cups, the actuator includes a rocking seat, a connecting portion that can be connected to the driving member is provided in the center of the bottom of the rocking seat, and rocking arms extending outward and corresponding to each connecting rod are provided along the circumference of the rocking seat, the rocking arms are provided with through holes, and the connecting rods are inserted and fixed in the corresponding through holes.

[0022] As a preferred solution of the utility model, the driving member includes a driving motor installed at the bottom of the base, an eccentric wheel is installed on the motor shaft of the driving motor, and the eccentric wheel is provided with an eccentric shaft that can be connected to the upper connecting part.

[0023] In summary, the utility model has the following beneficial effects compared with the prior art: the utility model significantly simplifies the assembly process by forming the water inlet valve part and the water outlet valve part from soft plastic, reduces the number of independent components that need to be processed, thereby improving production efficiency and installation accuracy, and reducing the complexity and time cost of manual operation. The overall sealing is enhanced, reducing the risk of leakage that may occur at the connection of multiple components, thereby improving the reliability of the product. The design is more suitable for automated production lines and can be installed by mechanical arms or other automated equipment, reducing the problems of improper installation or missing installation caused by manual operation, and ensuring the consistency and quality of the product. The optimized design of the water outlet check valve nozzle and the water inlet check valve nozzle ensures the smooth flow of the fluid during the suction and discharge process, while preventing backflow, and improving the reliable operation of the diaphragm pump. In addition, the concave water outlet valve part and the protruding check valve nozzle not only enhance the fit with the valve seat, but also improve the overall structural stability and sealing performance. Through the integrated structure, the possible errors that may occur in the production and assembly process of the micro diaphragm pump are reduced, the consistency of the product is improved, and the production cost is further reduced, which has significant practical value and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the cross-sectional structural views of an existing micro diaphragm pump after being exploded.

[0025] Figure 2 This is the second cross-sectional structural view of the existing micro diaphragm pump after decomposition.

[0026] Figure 3 This is one of the exploded views of the present utility model.

[0027] Figure 4 This is the second exploded view of the present utility model.

[0028] Figure 5 This is the third exploded view of the present invention.

[0029] Figure 6 This is one of the three-dimensional views of the integrated one-way valve plate in the utility model.

[0030] Figure 7 This is the second three-dimensional view of the integrated one-way valve plate in the utility model.

[0031] Figure 8 It is a cross-sectional view of the integrated one-way valve plate in the present invention, and an enlarged view of a local area in the figure.

[0032] Fig. 9 It is a three-dimensional view of the utility model.

[0033] Fig.10 It is a cross-sectional view of the utility model.

[0034] Fig.11 This is the fourth exploded view of the present invention.

[0035] Fig.12 This is the fifth exploded view of the present utility model.

[0036] Description of reference numerals: 1a, diaphragm pump body; 2a, diaphragm seat; 3a, water outlet chamber; 4a, water inlet chamber; 5a, air drum; 6a, water inlet through hole; 7a, water outlet through hole; 31a, water outlet diaphragm; 61a, water inlet diaphragm; 62a, plug rod; 63a, preset plug hole;

[0037] 1. Valve seat; 2. Diaphragm seat; 3. End cover; 4. Pump body; 5. Base; 6. Driving member; 7. Actuating member; 10. Outlet valve; 11. Inlet valve; 12. Outlet check valve nozzle; 13. Inlet check valve nozzle; 14. Outlet cavity; 15. Inlet cavity; 21. Leather cup; 22. Diaphragm chamber; 23. Connecting rod; 30. Concave cavity; 31. Spacer ring; 32. Outlet pipe; 33. Inlet pipe; 61. Driving motor; 62. Eccentric wheel; 63. Eccentric shaft; 71. Rocking seat; 72. Connecting part; 73. Rocker arm; 74. Perforation; 121. First valve column; 122. First water outlet nozzle; 123. First water outlet channel; 124. First water outlet gap; 131. Second valve column; 132. Second water outlet nozzle; 133. Second water outlet channel; 134. Second water outlet gap; 141. Water outlet hole. DETAILED DESCRIPTION

[0038] The following specific implementation contents provide a variety of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0039] In addition, spatially related words may be used, such as "below", "lower side", "from the inside out", "above", "upper side" and similar words. These relative words are for the convenience of describing the relationship between one element or feature and another element or feature in the drawings. These spatially related words include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotated 90 degrees or other orientations, and the spatially related adjectives used therein may also be interpreted in the same way. Therefore, it cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0040] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods: Figure 1 and Figure 2 The figure shows a schematic diagram of the cross-sectional structure of an existing micro-diaphragm pump after decomposition. It includes a diaphragm pump body 1a, a diaphragm seat 2a is arranged in the middle of the diaphragm pump body 1a, a water outlet chamber 3a is arranged in the center of the diaphragm seat 2a, a water outlet chamber 3a is arranged in the center of the diaphragm seat 2a, a water inlet chamber 4a is arranged on the bottom surface of the water inlet chamber 4a, and a plurality of water inlet holes 6a are arranged on the bottom surface of the water outlet chamber 4a, which are connected to the air drum 5a below, and a water outlet hole 7a is also penetrated through the bottom of the water outlet chamber 3a, which can be connected to the water inlet hole 6a through the air drum 5a below, and a water inlet diaphragm 61a is covered at the bottom of the water inlet hole 6a, and a plug rod 62a is arranged in the center of the water inlet diaphragm 61a, and a preset plug hole 63a is arranged in the center of the water inlet hole 6a, and the water outlet chamber 3a is covered with a water outlet diaphragm 31a, and the water outlet diaphragm 31a can cover the water outlet hole 7a. It can be clearly seen from the figure that the water inlet diaphragm 61a used for the existing micro-diaphragm pump is an independent small diaphragm, and the water inlet diaphragm 61a is independently installed on the water inlet through hole 6a. Such a structure requires the insertion rod 62a of the water inlet diaphragm 61a to be inserted into the corresponding preset plug hole 63a one by one, and then the water outlet diaphragm 31 is inserted into the water outlet chamber 3a. When manually installed, it is easy to be installed in place, and the speed is also very slow. In addition, the scattered tiny water inlet diaphragms 61a also require a lot of manpower to trim during injection molding, which consumes manpower and material resources and is not conducive to production and assembly.

[0041] In order to solve the above problems, Figures 3 to 8The one-piece one-way valve disc shown in the figure comprises an inlet valve portion 11 and an outlet valve portion 10 which are integrally formed of soft plastic. The inlet valve portion 11 is arranged on the top of the valve seat and can cover the outlet cavity of the valve seat, and is used to isolate the mutual communication between the inlet cavity of the valve seat and the outlet cavity of the valve seat. The inlet valve portion 11 surrounds the periphery of the outlet valve portion 10 and can cover the inlet of the inlet cavity of the valve seat, and is used to isolate the communication between the inlet cavity of the valve seat and the water inlet of the diaphragm pump. 10 is provided with a plurality of water outlet check valves 12 for introducing the fluid in the water inlet cavity of the valve seat into the water outlet cavity of the valve seat, and preventing the fluid in the water outlet cavity of the valve seat from flowing back into the water inlet cavity of the valve seat. A plurality of water inlet check valves 13 corresponding to the entrance of the water inlet cavity on the valve seat are provided on the water inlet valve portion 11. The water inlet check valves 13 can introduce the fluid in the water inlet of the diaphragm pump into the water inlet cavity of the valve seat, and prevent the fluid in the water inlet cavity of the valve seat from flowing back into the water inlet of the diaphragm pump. The water inlet valve portion 11 and the water outlet valve portion 10 are integrally formed of soft plastic. Such a design reduces the number of independent components that need to be handled during assembly and simplifies the production process. The entire one-way valve sheet only needs to be installed once, rather than installing multiple independent one-way valve diaphragms one by one. This greatly reduces the time and complexity of manual operation. It is more suitable for installation using an automated production line, improves installation accuracy, reduces problems of improper installation or missing installation caused by manual operation, and thus improves product quality.

[0042] Among them, the water outlet valve portion 10 is embedded in the valve seat in a concave shape, and the water outlet check valve mouth 12 is arranged on the top of the water outlet valve portion 10 in an upwardly protruding manner. The bottom of the water outlet check valve mouth 12 passes through the bottom surface of the water outlet valve portion 10 and is connected to the water outlet hole in the valve seat. Specifically: the water outlet check valve mouth 12 includes a first valve column 121 integrally connected to the top surface of the water outlet valve portion 10, and a first flat-mouthed first water outlet nozzle 122 is connected to the top of the first valve column 121, and a first water outlet 123 is provided in the first valve column 121, and the bottom end of which can pass through the bottom surface of the water outlet valve portion 10 and be connected to the water outlet hole in the valve seat, and the top of the first water outlet nozzle 122 is provided with a first water outlet seam 124 that can connect the first water outlet 123 with the water outlet cavity of the valve seat in one direction.

[0043] The water inlet check valve mouth 13 is arranged in a ring-shaped interval and protrudes downwardly on the bottom surface of the water inlet valve part 11, and the bottom end of the water inlet check valve mouth 13 extends to the entrance of the valve seat water inlet chamber. Specifically: the water inlet check valve mouth 13 includes a second valve column 131 integrally connected to the bottom surface of the water inlet valve part 11, and a second flat-mouthed second water outlet nozzle 132 is connected to the bottom of the second valve column 131, and a second water outlet 133 is provided in the second valve column 131, the bottom end of which can pass through the top surface of the water inlet valve part 11 and be connected to the water inlet of the diaphragm pump above, and the bottom end of the second water outlet nozzle 132 is provided with a second water outlet gap 134 that allows the second water outlet 133 to be connected to the valve seat water inlet chamber in one way.

[0044] It should be noted that the first water outlet 123 and the second water outlet 133 extend to the ends of the corresponding first water outlet gap 124 and the second water outlet gap 134. Due to the flat-mouth design, the internal hollow flow channels are both conical. In this way, when the external pressure is too large, the first water outlet gap 124 and the second water outlet gap 134 can be effectively closed, so that the external liquid or gas will not flow back from the first water outlet gap 124 and the second water outlet gap 134, and the fluid inside the first water outlet 123 and the second water outlet 133 can smoothly squeeze the first water outlet gap 124 and the second water outlet gap 134 to flow out to the outside, ensuring the smooth flow of the fluid during the suction and discharge process, while preventing backflow, thereby improving the reliable operation of the diaphragm pump.

[0045] In addition, if Figures 9 to 12The figure shows an embodiment of a micro diaphragm pump, which includes a pump body 4 composed of a valve seat 1, a diaphragm seat 2 and an end cover 3. The bottom end of the pump body 4 is connected to a tubular base 5, and a driving member 6 is provided at the bottom of the base 5. The diaphragm seat 2 has a plurality of diaphragm chambers 22, and the diaphragm chambers 22 respectively contain leather cups 21. The bottoms of the leather cups 21 are respectively connected to connecting rods 23 extending downward. A connecting rod 23 is provided in the base 5, which is connected between the connecting rod 23 and the driving member 6 and can allow the leather cups 21 to move. The top of the diaphragm seat 2 is connected to the bottom of the valve seat 1. The center of the valve seat 1 is provided with a water outlet cavity 14 with an open top. A water outlet hole 141 is penetrated on the bottom of the water outlet cavity 14 and can be connected with the corresponding leather cup 21 below. A plurality of water inlet cavities 15 corresponding to the leather cup 21 below are arranged at intervals around the circumference of the water outlet cavity 14. The bottom of the water inlet cavity 15 is connected with the corresponding leather cup 21. The top of the water inlet cavity 15 is open. The end cover 3 covers the top of the valve seat 1, and the bottom of the end cover 3 is provided with an upwardly concave cavity 30, and a spacer ring 31 is provided in the concave cavity 30 which can be buckled on the top of the periphery of the water outlet valve part 10, and the concave cavity 30 located in the spacer ring 31 is connected with the water outlet valve part 10, and the top opening of the water outlet check valve nozzle 12 points to the concave cavity 30 in the spacer ring 31, and a water outlet pipe 32 which can be connected with the concave cavity 30 in the spacer ring 31 is provided on the top of the end cover 3, and the concave cavity 30 outside the spacer ring 31 is provided. The water inlet chamber 15 is connected to the water inlet chamber 15, and a water inlet pipe 33 is provided at the top of the end cover 3, which can be connected to the concave chamber 30 outside the spacer ring 31. The concave chamber 30 at the top of the valve seat 1 and the bottom of the end cover 3 is covered with the integrated one-way valve plate as described above. The water outlet valve part 10 is embedded in the water inlet chamber 15, and the water inlet valve part 11 is sandwiched between the opening at the top of the water inlet chamber 15 and the concave chamber 30 outside the spacer ring 31. Each of the water inlet check valve nozzles 13 extends into each corresponding water inlet chamber 15. Specifically: the actuator 7 includes a swing seat 71, and a connecting part 72 that can be connected to the driving member 6 is provided at the bottom center of the swing seat 71. A rocker arm 73 extending outward and corresponding to each connecting rod 23 is provided along the circumference of the swing seat 71. The rocker arm 73 is provided with a through hole 74, and the connecting rod 23 is inserted and fixed in the corresponding through hole 74. The driving member 6 includes a driving motor 61 installed at the bottom of the base 5, and an eccentric wheel 62 is installed on the motor shaft of the driving motor 61, and an eccentric shaft 63 that can be connected to the upper connecting part 72 is provided on the eccentric wheel 62. The driving motor 61 drives the eccentric wheel 62 to rotate, so that the eccentric shaft 63 causes the entire actuator 7 to swing, so that each leather cup 21 corresponding to the rocker arm 73 can agitate the upper water inlet cavity 15, suck the water flow or gas in the water inlet pipe 33 from the water inlet check valve mouth 13, and then squeeze it out from the water outlet check valve mouth 12, and finally spray the water flow or gas from the water outlet pipe 32 through the water outlet cavity 14.Of course, the suction and extrusion action is basically the same as that of the existing micro diaphragm pump, except that the one-way valve sheet is different from the existing one-way valve diaphragm.

[0046] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An integrated one-way valve plate, characterized in that: Included are: A water outlet valve portion (10), the water outlet valve portion (10) being arranged on the top of the valve seat and capable of covering the water outlet cavity of the valve seat, and being used to isolate the communication between the water inlet cavity of the valve seat and the water outlet cavity of the valve seat; A water inlet valve portion (11), the water inlet valve portion (11) surrounds the periphery of the water outlet valve portion (10) and can cover the water inlet cavity entrance of the valve seat, and is used to isolate the communication between the water inlet cavity of the valve seat and the water inlet of the diaphragm pump; The water inlet valve portion (11) and the water outlet valve portion (10) are integrally formed of soft plastic; at least one water outlet check valve nozzle (12), the water outlet check valve nozzle (12) being arranged on the water outlet valve portion (10) and being used for introducing fluid in the water inlet cavity of the valve seat into the water outlet cavity of the valve seat and being able to prevent the fluid in the water outlet cavity of the valve seat from flowing back into the water inlet cavity of the valve seat; A plurality of water inlet check valve nozzles (13) are arranged on the water inlet valve portion (11), each water inlet check valve nozzle (13) corresponds to an inlet connected to a water inlet cavity on a valve seat, and the water inlet check valve nozzle (13) can guide fluid in a water inlet of a diaphragm pump into the water inlet cavity of the valve seat, and can prevent fluid in the water inlet cavity of the valve seat from flowing back into the water inlet of the diaphragm pump.

2. The one-piece one-way valve according to claim 1, characterized in that: The water outlet valve portion (10) is embedded in the valve seat in a concave shape, and the water outlet check valve nozzle (12) is arranged on the top of the water outlet valve portion (10) in an upwardly protruding manner. The bottom of the water outlet check valve nozzle (12) passes through the bottom surface of the water outlet valve portion (10) and is connected to the water outlet hole in the valve seat.

3. The one-piece one-way valve according to claim 2, characterized in that: The water inlet check valve nozzles (13) are arranged in an annular manner and are arranged to protrude downwards on the bottom surface of the water inlet valve portion (11), and the bottom end of the water inlet check valve nozzle (13) extends into the entrance of the water inlet cavity of the valve seat.

4. The one-piece one-way valve according to claim 3, characterized in that: The water outlet check valve nozzle (12) comprises a first valve column (121) integrally connected to the top surface of the water outlet valve portion (10); a first water outlet nozzle (122) in the shape of a flat mouth is connected to the top of the first valve column (121); a first water outlet channel (123) is provided in the first valve column (121) and the bottom end of which can pass through the bottom surface of the water outlet valve portion (10) and is connected to the water outlet hole in the valve seat; and a first water outlet slit (124) is provided at the top end of the first water outlet nozzle (122) and can connect the first water outlet channel (123) with the water outlet cavity of the valve seat in one direction.

5. The one-piece one-way valve according to claim 4, characterized in that: The water inlet check valve nozzle (13) includes a second valve column (131) integrally connected to the bottom surface of the water inlet valve portion (11); a second water outlet nozzle (132) in the shape of a flat mouth is connected to the bottom of the second valve column (131); a second water outlet channel (133) is provided in the second valve column (131) and the bottom end of which can pass through the top surface of the water inlet valve portion (11) and is connected to the water inlet of the diaphragm pump above; and a second water outlet gap (134) is provided at the bottom end of the second water outlet nozzle (132) so that the second water outlet channel (133) can be connected to the water inlet chamber of the valve seat in one direction.

6. A micro diaphragm pump, comprising a pump body (4) consisting of a valve seat (1), a diaphragm seat (2) and an end cover (3), the bottom end of the pump body (4) being connected to a tubular base (5), the bottom of the base (5) being provided with a driving member (6), the diaphragm seat (2) being provided with a plurality of diaphragm chambers (22), each of which contains a leather cup (21), the base (5) being provided with an actuating member (7) connected between the bottom end of the leather cup (21) and the driving member (6) and capable of agitating the leather cups (21) one by one through the driving member (6), the top of the diaphragm seat (2) being connected to the bottom of the valve seat (1), the center of the valve seat (1) being provided with a water outlet cavity (14) with an open top, the bottom surface of the water outlet cavity (14) being penetrated by a water outlet hole (141) capable of communicating with a corresponding leather cup (21) below, and a plurality of water outlet holes (141) being provided at intervals around the circumference of the water outlet cavity (14). A water inlet cavity (15) corresponding to the leather cup (21) below, the bottom of the water inlet cavity (15) is connected to the corresponding leather cup (21), the top of the water inlet cavity (15) is open, the end cover (3) covers the top of the valve seat (1), the bottom of the end cover (3) is provided with an upwardly concave cavity (30), the concave cavity (30) is provided with a spacer ring (31) that can be buckled on the top of the peripheral edge of the water outlet valve part (10), the top opening of the water outlet check valve mouth (12) points to the concave cavity (30) in the spacer ring (31), a water outlet pipe (32) that can be connected to the concave cavity (30) in the spacer ring (31) is provided at the top of the end cover (3), the concave cavity (30) outside the spacer ring (31) is connected to the water inlet cavity (15), and a water inlet pipe (33) that can be connected to the concave cavity (30) outside the spacer ring (31) is provided at the top of the end cover (3), characterized in that: An integrated one-way valve plate as claimed in any one of claims 1 to 5 is covered between the top of the valve seat (1) and the concave cavity (30) at the bottom of the end cover (3); the water outlet valve portion (10) is embedded in the water inlet cavity (15); the water inlet valve portion (11) is sandwiched between the opening at the top of the water inlet cavity (15) and the concave cavity (30) outside the spacer ring (31); and each of the water inlet check valve nozzles (13) extends into each corresponding water inlet cavity (15).

7. The micro diaphragm pump according to claim 6, characterized in that: The bottom of the leather cup (21) is respectively connected to a connecting rod (23) extending downward, the actuating member (7) includes a rocking seat (71), a connecting portion (72) capable of being connected to the driving member (6) is provided at the center of the bottom of the rocking seat (71), and rocking arms (73) extending outward and corresponding to each connecting rod (23) are provided along the circumference of the rocking seat (71), the rocking arms (73) are provided with through holes (74), and the connecting rods (23) are inserted and fixed in the corresponding through holes (74).

8. The micro diaphragm pump according to claim 7, characterized in that: The driving member (6) comprises a driving motor (61) mounted on the bottom of the base (5); an eccentric wheel (62) is mounted on the motor shaft of the driving motor (61); and an eccentric shaft (63) which can be connected to an upper connecting portion (72) is provided on the eccentric wheel (62).

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