Miniature diaphragm pump with top rod

Abstract

The utility model discloses a micro diaphragm pump with top rod, including pump head body, be equipped with the pump water cavity and respectively with the water inlet, the water outlet and the water inlet, the water outlet cavity of water inlet, water outlet cavity, the water route that pump water cavity is connected with the water outlet cavity and is equipped with the water outlet check valve, still include with the booster diaphragm is connected to be used for the top rod that follows booster diaphragm movement and opens the water outlet check valve when pumping water. The utility model discloses can assist opening the water outlet check valve when pumping water, ensure that the pump water function responds in time.

Description

Technical Field

[0001] This utility model relates to the field of fluid transport equipment technology, specifically to a miniature diaphragm pump with a push rod. Background Technology

[0002] Miniature diaphragm pumps, as important devices in water dispensers used to perform work on fluids, are widely used in modern human life.

[0003] The basic structure of a miniature diaphragm pump consists of a pump head, a pressure-boosting diaphragm, a partition plate, an outlet check valve, an inlet check valve, an eccentric assembly, a motor, and other components. Both the inlet and outlet check valves are fixed to the partition plate, which has an inlet and an outlet port. The motor drives the eccentric assembly to move the pressure-boosting diaphragm back and forth, thereby changing the volume of the pump chamber. When the volume of the pump chamber increases, the water pressure opens the inlet check valve, allowing source water to enter the pump chamber. When the volume of the pump chamber decreases, the water pressure opens the outlet check valve, allowing source water to enter the outlet chamber, thus realizing pumping.

[0004] However, after a long period of inactivity, water will remain inside the miniature diaphragm pump, and a large number of microorganisms will adhere to the bottom surface of the outlet check valve. Since the outlet check valve and the diaphragm are in surface contact, the death of a large number of microorganisms will form sludge. After the sludge hardens, it will cause the outlet check valve to stick to the diaphragm. Since the water pressure generated by the miniature diaphragm pump is generally low, the water pressure is not enough to open the outlet check valve when pumping water, resulting in a slow response of the pumping function. Utility Model Content

[0005] The purpose of this invention is to provide a miniature diaphragm pump with a push rod, which can assist water pressure in opening the outlet check valve when the miniature diaphragm pump is pumping water, ensuring that the pumping function of the miniature diaphragm pump responds in a timely manner.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution: A miniature diaphragm pump with a push rod includes a pump head body, which has a pumping chamber and an inlet chamber and an outlet chamber respectively connected to an inlet and an outlet. A one-way valve is provided on the water path connecting the pumping chamber and the outlet chamber. The pump head body also includes a push rod connected to a pressure-boosting diaphragm to push open the one-way valve as the pressure-boosting diaphragm moves during pumping.

[0007] In existing micro diaphragm pumps, the pumping stage involves a motor driving an eccentric assembly, which in turn drives the pressurizing diaphragm in reciprocating motion. When the pump chamber volume decreases (pressurization stroke), the water pressure inside the chamber increases. Ideally, this pressure should be sufficient to overcome the pressure on the other side of the outlet check valve and the valve's own weight / resistance, opening it to allow water to flow. However, if the valve is stuck to the diaphragm due to sludge, its static friction may exceed the water pressure generated by the pressurizing diaphragm, causing the valve to fail to open promptly or fully, resulting in delayed or even malfunctioning pumping.

[0008] In this design, the push rod is connected to the pressurizing diaphragm and moves synchronously with it. As the pressurizing diaphragm begins its pressurizing stroke, the push rod is driven and directly acts on the outlet check valve. The mechanical force provided by the push rod forcibly pushes the outlet check valve away from the diaphragm, breaking up any adhering sludge. Once the valve is slightly opened, the water pressure already established in the pump chamber quickly enters the gap, helping to fully open the valve and flush away the adhering material, allowing the subsequent water flow to return to normal. By adding a push rod linked to the pressurizing diaphragm, the reciprocating motion of the diaphragm is transformed into an active, mechanical valve-opening action, ensuring that the outlet check valve is forcibly opened at the start of each pumping stroke, regardless of whether any adhesion exists.

[0009] This solution fundamentally solves the problem of miniature diaphragm pumps shifting from passively opening with water pressure to actively opening with mechanical force. It overcomes the valve disc sticking problem caused by microbial sludge, scale, or prolonged static storage. The outlet valve is forcibly opened the moment the pump starts, ensuring the immediacy and reliability of the pump's function. It is especially suitable for scenarios involving intermittent use or starting after long-term idleness. There is no need to increase water pressure to overcome sticking by increasing motor power or changing the pump chamber design, thus maintaining the original pump's design efficiency and energy consumption level. The forced opening of the valve disc with each pumping operation effectively prevents sludge from hardening and solidifying over time, making it difficult for it to form a stable and strong adhesion. The gap formed after forced opening allows high-pressure water flow to flush the valve seat contact surface, helping to remove some of the contaminants that have already formed and delaying the re-accumulation of sludge.

[0010] Optionally, the lower end of the pump head body is provided with a partition plate, a support plate, and a shell in sequence. The partition plate is provided with a water inlet hole and a water outlet hole. The water inlet hole connects the water passage between the water inlet chamber and the water pump chamber, and the water outlet hole connects the water passage between the water pump chamber and the water outlet chamber. The pressure boosting diaphragm is pressed between the partition plate and the support plate. The pressure boosting diaphragm and the partition plate form the water pump chamber. The water outlet one-way valve is fixed on the partition plate. The water outlet one-way valve is attached to the top surface of the partition plate and covers the upper end of the water outlet hole. One end of the top plate is inserted into the water inlet hole, and the other end is connected to the pressure boosting diaphragm.

[0011] Optionally, the bottom wall of the pump chamber is provided with a fixed seat integrally formed with the pressurizing diaphragm, one end of the push rod is nested on the outside of the fixed seat, and the top of the fixed seat is provided with a limiting cap to prevent the push rod from disengaging from the fixed seat. The limiting cap is integrally formed with the fixed seat.

[0012] Optionally, the top rod includes a horizontal section and an inclined section. The horizontal section is sleeved with the fixed seat, the upper end of the inclined section is inserted into the water outlet hole, and the lower end is connected to a section of the horizontal section.

[0013] Optionally, the upper end of the inclined section is lower than the top surface of the partition.

[0014] Optionally, the partition is provided with a one-way valve for water inlet, which is attached to the top surface of the partition and covers the lower end of the water inlet hole.

[0015] Optionally, a sealing gasket is pressed between the partition and the support plate, and an inlet chamber and an outlet chamber are formed between the partition and the pump head body. A sealing ring is pressed between the partition and the inner wall of the pump head body.

[0016] Optionally, it also includes a drive assembly, which includes a motor and an eccentric assembly. The housing is connected to the upper end of the motor, and the motor drives the pump water chamber volume to change through the eccentric assembly.

[0017] Optionally, the eccentric assembly includes an eccentric seat, a connecting rod, and a pusher. The bottom surface of the eccentric seat is eccentrically connected to the output shaft. The two ends of the connecting rod are eccentrically connected to the eccentric seat and the pusher, respectively. The connecting rod is inclined. One end of the pusher is connected to the lower end of the pressurizing diaphragm.

[0018] The beneficial effects of this utility model are: 1. In this utility model, the problem of the micro diaphragm pump being changed from passively opening by water pressure to actively opening by mechanical force is fundamentally solved. This overcomes the problem of valve disc sticking caused by microbial sludge, scale, or long-term static placement. The outlet valve can be forcibly opened the moment the pump starts, ensuring the immediacy and reliability of the pumping function. It is especially suitable for scenarios of intermittent use or starting after long-term idleness.

[0019] 2. It does not require increasing the water pressure to overcome adhesion by increasing the motor power or changing the pump chamber design, thus maintaining the original pump's design efficiency and energy consumption level. Each pumping operation forces the valve disc open, which can effectively prevent the sludge from hardening and solidifying over a long period of time, making it difficult for it to form a stable and strong adhesion. The gap formed after the forced opening allows high-pressure water flow to flush the valve seat contact surface, which helps to remove some of the contaminants that have already formed and delays the re-accumulation of sludge. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Reference numerals: 01-Motor, 02-Output shaft, 03-Eccentric seat, 04-Connecting rod, 05-Push frame, 06-Pressure boosting diaphragm, 07-Horizontal section, 08-Fixed seat, 09-Pump chamber, 10-Inlet check valve, 11-Inlet hole, 12-Inlet chamber, 13-Outlet hole, 14-Outlet check valve, 15-Sealing ring, 16-Inlet, 17-Outlet, 18-Outlet chamber, 19-Pump head body, 20-Sealing gasket, 21-Baffle plate, 22-Inclined section, 23-Support plate, 24-Outer shell, 25-Top rod, 26-Limit cap. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] A miniature diaphragm pump with a push rod includes a pump head body 19, a pumping chamber 09, an inlet chamber 12 and an outlet chamber 18 connected to an inlet 16 and an outlet 17 respectively, and an outlet one-way valve 14 connected to the water passage between the pumping chamber 09 and the outlet chamber 18. The pump head body 19 also includes a push rod 25 connected to a pressurizing diaphragm 06 to push open the outlet one-way valve 14 when pumping water, following the movement of the pressurizing diaphragm 06.

[0026] In the existing pumping stage: source water enters the inlet chamber 12 through inlet 16. Motor 01 drives the eccentric assembly, causing the pressure-boosting diaphragm 06 to reciprocate. When the volume of pumping chamber 09 increases, water from inlet chamber 12 is drawn into pumping chamber 09. When the volume of pumping chamber 09 decreases (pressure boosting stroke), the water pressure inside the chamber increases, pumping the water in pumping chamber 09 to outlet chamber 18, and then outputting it through outlet 17. Ideally, this pressure should be able to overcome the pressure on the other side of the outlet check valve 14 and the valve's own weight / resistance, opening it to achieve water output. If the valve is stuck to the baffle 21 due to sludge, its static friction may be greater than the water pressure generated by the pressure-boosting diaphragm 06, causing the valve to fail to open in time or fully, resulting in delayed or even malfunctioning pumping function.

[0027] In this embodiment, as Figure 1As shown, the push rod 25 is connected to the pressurizing diaphragm 06 and moves synchronously with it. Simultaneously with the pressurizing diaphragm 06 beginning its pressurizing stroke (moving towards the pump chamber 09), the push rod 25 is driven and directly acts on the outlet one-way valve 14. The mechanical force provided by the push rod 25 forcibly pushes the outlet one-way valve 14 away from the partition plate 21, breaking the adhesion of the sludge. Once the valve is opened through a small gap, the water pressure already established in the pump chamber 09 quickly enters the gap, helping to fully open the valve and flush away the adhering material, allowing the subsequent water flow to return to normal. By adding the push rod 25, which is linked to the pressurizing diaphragm 06, the reciprocating motion of the pressurizing diaphragm 06 is transformed into an active, mechanical valve-opening action, ensuring that the outlet one-way valve 14 is forcibly opened at the start of each pumping stroke, regardless of whether there is any adhesion.

[0028] This solution fundamentally solves the problem of miniature diaphragm pumps shifting from passively opening with water pressure to actively opening with mechanical force. It overcomes the valve disc sticking problem caused by microbial sludge, scale, or prolonged static storage. The outlet valve is forcibly opened the moment the pump starts, ensuring the immediacy and reliability of the pump's function. It is especially suitable for scenarios involving intermittent use or starting after long-term idleness. There is no need to increase the water pressure to overcome sticking by increasing the motor power or changing the pump chamber design, thus maintaining the original pump's design efficiency and energy consumption level. The forced opening of the valve disc with each pumping operation effectively prevents sludge from hardening and solidifying over time, making it difficult for it to form a stable and strong adhesion. The gap formed after forced opening allows high-pressure water flow to flush the valve seat contact surface, helping to remove some of the contaminants that have already formed and delaying the re-accumulation of sludge.

[0029] Furthermore, the lower end of the pump head body 19 is provided with a partition 21, a support plate 23, and a shell 24 in sequence. The partition 21 is provided with an inlet hole 11 and an outlet hole 13. The inlet hole 11 connects the water passage between the inlet chamber 12 and the pump water chamber 09, and the outlet hole 13 connects the water passage between the pump water chamber 09 and the outlet chamber 18. The pressure boosting diaphragm 06 is pressed between the partition 21 and the support plate 23. The pressure boosting diaphragm 06 and the partition 21 form the pump water chamber 09. The outlet one-way valve 14 is fixed on the partition 21. The outlet one-way valve 14 is attached to the top surface of the partition 21 and covers the upper end of the outlet hole 13. One end of the top plate is inserted into the inlet hole 11, and the other end is connected to the pressure boosting diaphragm 06.

[0030] Specifically, the pressurizing diaphragm 06 is pressed between the partition plate 21 and the support plate 23, forming a pump chamber 09 between it and the partition plate 21. The outlet one-way valve 14 is fixed above the partition plate 21, with its bottom surface adhering to the top surface of the partition plate 21 and covering the outlet hole 13. One end of the push rod 25 is directly inserted into the inlet hole 11 of the partition plate 21, while the other end is connected to the pressurizing diaphragm 06 (located below the partition plate 21).

[0031] Since the upper end of the push rod 25 is located inside the water inlet 11, its main function is to open the valve rather than seal the water inlet 11. Therefore, there should be sufficient clearance in the water inlet 11 to allow water to flow through. As the pressurizing diaphragm 06 moves upward, the push rod 25 is pushed upward simultaneously. Since the upper end of the push rod 25 has been inserted into the water inlet 11 and is located in the pump chamber 09, when it moves upward, the top (or head) of the push rod 25 will directly abut or impact the bottom surface of the outlet one-way valve 14 covering the outlet 13. This upward mechanical force will force the outlet one-way valve 14, which may be stuck with mud, to be pushed away from the partition 21, so that it opens. Once the valve is opened, the high-pressure water in the pump chamber 09 will quickly rush out, completely opening the valve and completing the water discharge.

[0032] Furthermore, the bottom wall of the pump chamber 09 is provided with a fixed seat 08 integrally formed with the pressurizing diaphragm 06, one end of the top rod 25 is nested on the outside of the fixed seat 08, and the top of the fixed seat 08 is provided with a limiting cap 26 to prevent the top rod 25 from disengaging from the fixed seat 08. The limiting cap 26 is integrally formed with the fixed seat 08.

[0033] Specifically, the bottom end of the push rod 25 is nested on the outside of the fixed seat 08. The top of the fixed seat 08 is equipped with a limiting cap 26, which is integrally formed with the fixed seat 08. This cap structure is a mechanical stop to prevent the push rod 25 from axially disengaging from the fixed seat 08 during movement. The limiting cap 26 forms a reliable physical barrier, ensuring that the push rod 25 will never detach from the drive end during the long-term, high-frequency reciprocating motion of the diaphragm pump. The integrally formed fixed seat 08 and limiting cap 26 structure is robust and can effectively transmit the thrust of the pressurizing diaphragm 06 to the push rod 25, avoiding the use of threaded, adhesive, or other potentially loose connection methods. The nested connection method may allow slight radial sway or misalignment, which can better accommodate the slight deformation or sway that the pressurizing diaphragm 06 may produce during reciprocating motion, reducing unnecessary constraints and wear.

[0034] Furthermore, the top rod 25 includes a horizontal section 07 and an inclined section 22. The horizontal section 07 is sleeved with the fixed seat 08, and the upper end of the inclined section 22 is inserted into the water outlet 13, while the lower end is connected to a section of the horizontal section 07.

[0035] Specifically, the push rod 25 is an L-shaped or zigzag-shaped rod. The horizontal section 07 is located at the bottom of the pump chamber 09 and is used to connect with the fixed seat 08 on the pressurizing diaphragm 06 to realize power input. The inclined section 22 extends upward from one end of the horizontal section 07 and its upper end is directly inserted into the outlet hole 13. Its function is to directly push the outlet one-way valve 14 covering the outlet hole 13 upward during the pump stroke.

[0036] Water inlet stroke: The pressurized diaphragm 06 moves down, which drives the top rod 25 to move down as a whole. The inclined section 22 retracts downward from the water outlet 13 to make way for the water flow and does not interfere with the water inlet path at all.

[0037] Water discharge / pressurization stroke: The pressurization diaphragm 06 moves upward, driving the push rod 25 to move upward as a whole through the fixed seat 08. The inclined section 22 of the push rod 25 moves upward accordingly, and its top directly acts on the bottom surface of the water discharge one-way valve 14. The mechanical force forcibly opens the valve that may be stuck, and the high-pressure water follows closely behind, rushing out from the opened gap to complete the pumping.

[0038] Since the inclined section 22 is directly inserted into the outlet hole 13, its top end can be designed to perfectly match the bottom surface of the valve disc (such as a cone or hemispherical shape), ensuring good contact during pushing and concentrating the force on the central area where the adhesive needs to be broken, thus maximizing efficiency.

[0039] Furthermore, the upper end of the inclined section 22 is lower than the top surface of the partition 21.

[0040] Specifically, in this embodiment, in the default state (when not pushing), the push rod 25 is not in contact with the valve disc. When the diaphragm pump is stationary or in the water inlet stroke, the outlet one-way valve disc 14 is tightly attached to the top surface of the partition plate 21 under its own gravity, closing the outlet hole 13. At this time, the upper end of the inclined section 22 of the push rod 25 is hidden inside the outlet hole 13, and its top surface is lower than the top surface of the partition plate 21. Therefore, there is a gap between it and the bottom surface of the outlet one-way valve disc 14 in the closed state, and the two are not in physical contact.

[0041] When the pressurized diaphragm 06 is pushed upward, causing the push rod 25 to move upward as a whole, the upper end of the inclined section 22 begins to extend upward from the outlet hole 13. Since its initial position is lower than the top surface of the diaphragm 21, it needs to move upward for a short period of time before its top end just touches the bottom surface of the outlet one-way valve disc 14. After that, it continues to move upward to apply a pushing force to push the valve disc away from the valve seat. This ensures that in the non-working state, the push rod 25 does not interfere with the sealing of the outlet one-way valve disc 14 at all. The valve disc can achieve close contact with the diaphragm 21 by its own design (such as flexible materials), ensuring the system's good self-sealing performance. If the push rod 25 is always in contact with the outlet one-way valve disc 14, it will form a hard support and damage the seal.

[0042] At the initial moment of pump startup, the water pressure in the pump chamber begins to build up. If the adhesion is not severe at this time, the water pressure itself may be able to open the valve disc, allowing the water pressure to try to work first. Only when the water pressure is insufficient to overcome the adhesion force (at this time, the outlet one-way valve disc 14 is not open and the water pressure continues to rise) will the continuously rising push rod 25 provide mechanical assistance, forming a coordinated mode of hydraulic priority and mechanical support.

[0043] Furthermore, the partition 21 is provided with a one-way valve 10 for water inlet, which is attached to the top surface of the partition 21 and covers the lower end of the water inlet hole 11.

[0044] Furthermore, a sealing gasket 20 is pressed between the partition plate 21 and the support plate 23, and the partition plate 21 and the pump head body 19 form an inlet chamber 12 and an outlet chamber 18. A sealing ring 15 is pressed between the partition plate 21 and the inner wall diameter of the pump head body 19.

[0045] Specifically, the sealing gasket 20 is used to seal the installation gap between the pump head body 19 and the partition 21 to prevent water in the inlet chamber 12 and the outlet chamber 18 from seeping to the outside. The top surface of the partition 21 is provided with a protrusion located outside the outlet one-way valve disc 14. The inner side of the protrusion and the inner top wall of the pump head body 19 form the outlet chamber 18, and the outer side of the protrusion and the inner side wall of the pump head body 19 form the inlet chamber 12. The sealing ring 15 is used to isolate the inlet chamber 12 and the outlet chamber 18.

[0046] Furthermore, it also includes a drive assembly, which includes a motor 01 and an eccentric assembly. The housing 24 is connected to the upper end of the motor 01, and the motor 01 drives the volume change of the pump water chamber 09 through the eccentric assembly.

[0047] Furthermore, the eccentric assembly includes an eccentric seat 03, a connecting rod 04, and a pusher 05. The bottom surface of the eccentric seat 03 is eccentrically connected to the output shaft 02. The two ends of the connecting rod 04 are eccentrically connected to the eccentric seat 03 and the pusher 05, respectively. The connecting rod 04 is inclined. One end of the pusher 05 is connected to the lower end of the pressurizing diaphragm 06.

[0048] Specifically, the principle and structure of the diaphragm pump for water intake and pumping via motor 01 and eccentric assembly are existing technologies. Specifically, when motor 01 starts, its output shaft 02 rotates. The bottom surface of eccentric seat 03 is eccentrically connected to output shaft 02 (similar to an eccentric wheel or crank), converting the pure rotational motion of motor 01 into a circular oscillation motion of the center of eccentric seat 03 in a horizontal plane. Connecting rod 04 serves as an intermediate connecting rod, with its two ends eccentrically connected to eccentric seat 03 and push frame 05, respectively. Due to the inclined setting of connecting rod 04, when eccentric seat 03 oscillates, the motion of push frame 05 is constrained to a linear reciprocating motion approximately perpendicular to the plane of diaphragm 21, driven by the inclined connecting rod 04. One end of push frame 05 is connected to the lower end of pressurized diaphragm 06. The linear reciprocating motion of push frame 05 directly drives the central area of ​​pressurized diaphragm 06 to move up and down, thereby periodically changing the volume of pump chamber 09. The movement of the pressurized diaphragm 06, through its integrally formed fixed seat 08 and limit cap 26, synchronously drives the nested top rod 25 to perform a completely consistent reciprocating motion.

[0049] Complete working cycle: The rotation of motor 01 drives the eccentric seat 03 to oscillate in a circular motion through the output shaft 02, and then drives the push frame 05 to reciprocate linearly through the inclined connecting rod 04. The linear reciprocation of the push frame 05 causes the pressurizing diaphragm 06 to reciprocate and deform, while driving the push rod 25 to move up and down reciprocally. The inclined section 22 of the push rod 25 opens the one-way valve 14 of the water outlet during the water outlet stroke.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A miniature diaphragm pump with a push rod, comprising a pump head body (19), wherein the pump head body (19) is provided with a pump water chamber (09) and an inlet chamber (12) and an outlet chamber (18) respectively connected to an inlet (16) and an outlet (17), and an outlet one-way valve (14) is provided on the water path connecting the pump water chamber (09) and the outlet chamber (18), characterized in that, It also includes a push rod (25) connected to the pressurizing diaphragm (06) to push open the outlet check valve (14) as the pressurizing diaphragm (06) moves during water pumping.

2. A miniature diaphragm pump with a push rod according to claim 1, characterized in that, The pump head body (19) is provided with a partition (21), a support plate (23), and a shell (24) in sequence at the lower end. The partition (21) is provided with an inlet hole (11) and an outlet hole (13). The inlet hole (11) connects the water passage between the inlet chamber (12) and the pump chamber (09). The outlet hole (13) connects the water passage between the pump chamber (09) and the outlet chamber (18). The pressure-boosting diaphragm (06) is pressed between the partition (21) and the support plate (23). The pressure-boosting diaphragm (06) and the partition (21) form the pump chamber (09). The outlet one-way valve (14) is fixed on the partition (21). The outlet one-way valve (14) is attached to the top surface of the partition (21) and covers the upper end of the outlet hole (13). One end of the top plate is inserted into the inlet hole (11), and the other end is connected to the pressure-boosting diaphragm (06).

3. A miniature diaphragm pump with a push rod according to claim 2, characterized in that, The bottom wall of the pump chamber (09) is provided with a fixed seat (08) integrally formed with the pressurizing diaphragm (06). One end of the top rod (25) is nested on the outside of the fixed seat (08). The top of the fixed seat (08) is provided with a limiting cap (26) to prevent the top rod (25) from separating from the fixed seat (08). The limiting cap (26) is integrally formed with the fixed seat (08).

4. A miniature diaphragm pump with a push rod according to claim 3, characterized in that, The top rod (25) includes a horizontal section (07) and an inclined section (22). The horizontal section (07) is sleeved with the fixed seat (08). The upper end of the inclined section (22) is inserted into the water outlet (13), and the lower end is connected to a section of the horizontal section (07).

5. A miniature diaphragm pump with a push rod according to claim 4, characterized in that, The upper end of the inclined section (22) is lower than the top surface of the partition (21).

6. A miniature diaphragm pump with a push rod according to claim 5, characterized in that, The partition (21) is provided with a water inlet one-way valve (10), which is attached to the top surface of the partition (21) and covers the lower end of the water inlet hole (11).

7. A miniature diaphragm pump with a push rod according to claim 2, characterized in that, A sealing gasket (20) is pressed between the partition (21) and the support plate (23). The partition (21) and the pump head body (19) form an inlet chamber (12) and an outlet chamber (18). A sealing ring (15) is pressed between the partition (21) and the inner wall of the pump head body (19).

8. A miniature diaphragm pump with a push rod according to claim 1, characterized in that, It also includes a drive assembly, which includes a motor (01) and an eccentric assembly. The housing (24) is connected to the upper end of the motor (01), and the motor (01) drives the volume change of the pump water chamber (09) through the eccentric assembly.

9. A miniature diaphragm pump with a push rod according to claim 8, characterized in that, The eccentric assembly includes an eccentric seat (03), a connecting rod (04), and a pusher (05). The bottom surface of the eccentric seat (03) is eccentrically connected to the output shaft (02). The two ends of the connecting rod (04) are eccentrically connected to the eccentric seat (03) and the pusher (05) respectively. The connecting rod (04) is inclined. One end of the pusher (05) is connected to the lower end of the pressurizing diaphragm (06).

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