Integrated structure diaphragm pump with two-way check valve

Abstract

The integrated structure diaphragm pump with the two-way check valve comprises a water inlet and outlet cover, a silica gel sealing gasket is installed in the water inlet and outlet cover in an embedded mode, and a back pressure spring is installed in the center of the upper end of the silica gel sealing gasket. A sealing gasket is arranged at the connecting position of the first water inlet and outlet diaphragm seat and the second water inlet and outlet diaphragm seat, a main diaphragm seat is installed below the second water inlet and outlet diaphragm seat, a main diaphragm is installed in the main diaphragm seat in an embedded mode, and a main diaphragm support is fixedly connected to the lower end of the main diaphragm in an inserted mode. According to the utility model, the quick connector structure is adopted for water inlet and outlet structurally, so that the water pump has the advantage of convenience in assembly and molding, the pressure difference return valve is additionally arranged functionally to prevent return caused by water pressure difference after water pumping is completed, a back pressure valve spring mechanism controls valve opening and ensures that the water pressure difference of reverse return is more than 2kfg at the same time, and the check valve is arranged after water pumping is completed, so that the service life of the water pump is prolonged. And the negative pressure value of the pump can reach more than 35kpa while the sealing of the pipeline is ensured, so that the sealing performance is well realized.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm pumps, in particular to an integrated structural diaphragm pump with a two-way check valve. Background Art

[0002] The diaphragm pump, also known as the control pump, is the main type of actuator. It receives the control signal output by the control control unit and uses the power operation to change the fluid flow. The role of the diaphragm pump in the control process is to receive the control signal of the regulator or computer, change the flow of the regulated medium, and maintain the regulated parameters within the required range, thereby achieving automation of the production process. If the automatic adjustment system is compared with the manual adjustment process, the detection unit is the human eye, the adjustment control unit is the human brain, and the execution unit - the diaphragm pump is the human hand and foot. To achieve the regulation and control of a certain parameter of the process such as temperature, pressure, flow, liquid level, etc., the diaphragm pump is indispensable.

[0003] The diaphragm pumps currently on the market do not have a check valve function, which can easily cause backflow and have poor sealing and protection performance. Therefore, it is necessary to develop a diaphragm pump with an integrated structure and a two-way check valve. Utility Model Content

[0004] The utility model aims to provide a diaphragm pump with an integrated two-way check valve structure to solve the problem mentioned in the above background technology that the diaphragm pumps currently on the market do not have a check valve function, are prone to backflow, and have poor sealing and protection performance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diaphragm pump with an integrated structure of a two-way check valve, comprising an inlet and outlet water cover, a silicone sealing gasket is embedded and installed inside the water inlet and outlet cover, a back pressure spring is installed at the center position of the upper end of the silicone sealing gasket, a first inlet and outlet water diaphragm seat is installed below the water inlet and outlet cover, a second inlet and outlet water diaphragm seat is installed below the first inlet and outlet water diaphragm seat, a water outlet diaphragm is installed at the center of the surface of the second inlet and outlet water diaphragm seat, a sealing gasket is provided at the connection between the first inlet and outlet water diaphragm seat and the second inlet and outlet water diaphragm seat, a water inlet diaphragm is installed inside the second inlet and outlet water diaphragm seat, a main diaphragm seat is installed below the second inlet and outlet water diaphragm seat, a main diaphragm is embedded and installed inside the main diaphragm seat, and a main diaphragm bracket is plugged and fixed to the lower end of the main diaphragm.

[0006] Preferably, a water inlet pipe and a water outlet pipe are respectively installed on the upper ends of the water inlet and outlet covers.

[0007] Preferably, a quick-release plug-in structure is provided between the water inlet and outlet cover and the first water inlet and outlet membrane seat.

[0008] Preferably, a detachable structure is provided between the first water inlet and outlet diaphragm seat and the second water inlet and outlet diaphragm seat.

[0009] Preferably, the lower end of the main diaphragm support is connected to an eccentric wheel via an eccentric wheel shaft.

[0010] Preferably, a motor mounting seat is inserted and fixed below the main diaphragm seat, a motor body is installed below the motor mounting seat, an eccentric wheel is installed inside the motor mounting seat, and the output end of the motor body is connected to the eccentric wheel through a rotating shaft.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model adopts a quick-plug joint structure for water inlet and outlet, which has the advantage of easy assembly and molding. A differential pressure reflux valve is added in function to prevent reflux caused by the water pressure difference after pumping is completed. The back pressure valve spring mechanism controls the valve opening to ensure that the water pressure difference of the reverse reflux is above 2kfg. The valve port diameter is 3.5mm, which ensures that the flow rate is not restricted and the throttling is not affected. The silicone sealing pad is made of high-strength and wear-resistant material and does not stick to the valve port to affect the opening of the valve. After the pumping is completed, a check valve is provided to ensure the sealing of the pipeline while also making the negative pressure value of the pump reach above 35kpa, which well solves the sealing performance problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the explosion decomposition structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 3 This is the internal water circuit schematic diagram of the utility model;

[0016] Figure 4 It is an internal sectional view of the present utility model.

[0017] In the figure: 1. water outlet pipe; 2. back pressure spring; 3. silicone sealing gasket; 4. water outlet diaphragm; 5. first water inlet and outlet diaphragm seat; 6. sealing gasket; 7. main diaphragm; 8. main diaphragm bracket; 9. eccentric wheel shaft; 10. eccentric wheel; 11. motor mounting seat; 12. motor body; 13. main diaphragm seat; 14. water inlet diaphragm; 15. second water inlet and outlet diaphragm seat; 16. water inlet pipe; 17. water inlet and outlet cover. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1-4 The utility model provides an embodiment: a diaphragm pump with an integrated structure of a two-way check valve, comprising an inlet and outlet water cover 17, a silicone sealing gasket 3 is embedded and installed inside the water inlet and outlet cover 17, a back pressure spring 2 is installed at the center position of the upper end of the silicone sealing gasket 3, a first inlet and outlet water diaphragm seat 5 is installed below the water inlet and outlet cover 17, a second inlet and outlet water diaphragm seat 15 is installed below the first inlet and outlet water diaphragm seat 5, a water outlet diaphragm 4 is installed at the center of the surface of the second inlet and outlet water diaphragm seat 15, a sealing gasket 6 is provided at the connection between the first inlet and outlet water diaphragm seat 5 and the second inlet and outlet water diaphragm seat 15, a water inlet diaphragm 14 is installed inside the second inlet and outlet water diaphragm seat 15, a main diaphragm seat 13 is installed below the second inlet and outlet water diaphragm seat 15, a main diaphragm 7 is embedded and installed inside the main diaphragm seat 13, and a main diaphragm bracket 8 is plugged and fixed to the lower end of the main diaphragm 7.

[0020] Furthermore, the upper ends of the water inlet and outlet covers 17 are respectively provided with a water inlet pipe 16 and a water outlet pipe 1 to facilitate the flow control of water inlet and water outlet.

[0021] Furthermore, a quick-release plug-in structure is provided between the water inlet and outlet cover 17 and the first water inlet and outlet membrane seat 5, which has the advantages of convenient connection and assembly and convenient installation and molding.

[0022] Furthermore, the first water inlet and outlet diaphragm seat 5 and the second water inlet and outlet diaphragm seat 15 are detachable structures, which facilitates the rapid alignment and sealing connection between the first water inlet and outlet diaphragm seat 5 and the second water inlet and outlet diaphragm seat 15 .

[0023] Furthermore, the lower end of the main diaphragm bracket 8 is connected to an eccentric wheel 10 via an eccentric wheel shaft 9 .

[0024] Furthermore, a motor mounting seat 11 is inserted and fixed below the main diaphragm seat 13, a motor body 12 is installed below the motor mounting seat 11, an eccentric wheel 10 is installed inside the motor mounting seat 11, and the output end of the motor body 12 is connected to the eccentric wheel 10 through a rotating shaft.

[0025] Working principle: When in use, external water flows into the diaphragm pump from the water inlet pipe 16, and the water flows through the silicone seal 3 and the water inlet slot hole inside the first water inlet and outlet diaphragm seat 5 in turn. The second water inlet and outlet diaphragm seat 15 is installed below the first water inlet and outlet diaphragm seat 5, and the water inlet diaphragm 14 is installed inside the second water inlet and outlet diaphragm seat 15. After passing through the water inlet diaphragm 14, the water flows through the water outlet diaphragm 4 at the center of the surface of the second water inlet and outlet diaphragm seat 15 through the pipeline, and finally passes through the first water inlet and outlet diaphragm seat 5 and the silicone seal 3. The water flows out through the outlet trough hole on the surface through the outlet pipe 1. By adding a differential pressure reflux valve in terms of function, the backflow caused by the water pressure difference after the pumping is completed can be prevented. A back pressure spring 2 is installed at the center position of the upper end of the silicone sealing pad 3. The back pressure spring 2 mechanism controls the valve opening while ensuring that the water pressure difference of the reverse reflux is above 2kfg. The silicone sealing pad 3 is made of high-strength and wear-resistant material and does not stick to the valve port to affect the opening of the valve. The various components of the diaphragm pump adopt a plug-in and quick-disassembly structure design, which has the advantages of tight and stable connection, fast assembly speed and low cost.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A diaphragm pump with an integrated bidirectional check valve, comprising an inlet and outlet water cover (17), characterized in that: A silicone sealing pad (3) is embedded and installed inside the water inlet and outlet cover (17), and a back pressure spring (2) is installed at the center position of the upper end of the silicone sealing pad (3). A first water inlet and outlet diaphragm seat (5) is installed below the water inlet and outlet cover (17), and a second water inlet and outlet diaphragm seat (15) is installed below the first water inlet and outlet diaphragm seat (5). A water outlet diaphragm (4) is installed at the center of the surface of the second water inlet and outlet diaphragm seat (15). A sealing pad (6) is provided at the connection between the first water inlet and outlet diaphragm seat (5) and the second water inlet and outlet diaphragm seat (15). A water inlet diaphragm (14) is installed inside the second water inlet and outlet diaphragm seat (15), and a main diaphragm seat (13) is installed below the second water inlet and outlet diaphragm seat (15). A main diaphragm (7) is embedded and installed inside the main diaphragm seat (13), and a main diaphragm bracket (8) is inserted and fixed to the lower end of the main diaphragm (7).

2. The diaphragm pump with an integrated bidirectional check valve according to claim 1, characterized in that: The upper ends of the water inlet and outlet covers (17) are respectively provided with a water inlet pipe (16) and a water outlet pipe (1).

3. The diaphragm pump with an integrated bidirectional check valve according to claim 1, characterized in that: A quick-release plug-in structure is provided between the water inlet and outlet cover (17) and the first water inlet and outlet membrane seat (5).

4. The diaphragm pump with an integrated bidirectional check valve according to claim 1, characterized in that: A detachable structure is provided between the first water inlet and outlet membrane seat (5) and the second water inlet and outlet membrane seat (15).

5. The diaphragm pump with an integrated bidirectional check valve according to claim 1, characterized in that: The lower end of the main diaphragm support (8) is connected to an eccentric wheel (10) via an eccentric wheel shaft (9).

6. The diaphragm pump with an integrated bidirectional check valve according to claim 1, characterized in that: A motor mounting seat (11) is inserted and fixed below the main diaphragm seat (13), a motor body (12) is installed below the motor mounting seat (11), an eccentric wheel (10) is installed inside the motor mounting seat (11), and an output end of the motor body (12) is connected to the eccentric wheel (10) via a rotating shaft.

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