Diaphragm pump valve plate mounting structure

Abstract

The utility model provides a diaphragm pump valve plate installation structure which comprises a pump body, a water inlet cavity, a water outlet cavity and a plurality of compression cavities evenly distributed in the circumferential direction are formed in the pump body, a water inlet and a water outlet are formed in the side wall of the pump body, and a water suction hole communicated with the water inlet cavity and a drainage hole communicated with the water outlet cavity are formed in the end of each compression cavity. A one-way valve for enabling water to unidirectionally enter the compression cavity from the water inlet cavity is arranged on the water absorption hole; a sealing face used for installing a drain valve is arranged at the end of the water outlet cavity, the edge of the drain valve can cover a drain hole formed in the sealing face, water enters the water outlet cavity from the compression cavity in a one-way mode, and a limiting structure used for limiting the drain valve in the radial direction is arranged on the sealing face. And a pressing column which is in contact with the upper end part of the drain valve and axially limits the drain valve is arranged in the water outlet cavity. The diaphragm pump valve plate mounting structure is compact in structure and convenient to assemble, the stability and the sealing performance of a drain valve can be ensured, the operation reliability of a pump body is improved, and the service life of the pump body is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pump, especially a diaphragm pump valve sheet mounting structure. BACKGROUND

[0002] With the diaphragm pump of water purifier for flow requirement more and more big, the working chamber of pump is more and more, this is mainly to improve the working efficiency of pump, reaches the working requirement of large flow. The design of diaphragm pump will separate the compression cavity of suction water separately, and then the water outlet cavity is arranged in the same chamber. When the chamber is less in early stage, the area of discharge valve is small, generally adopts pull handle type assembly discharge valve. Now because the chamber is too much, so the area of discharge cavity also changes big, the area of discharge valve also changes big, if simply adopts pull handle chamber assembly, the sealing property of valve sheet far end will be bad, affects the stability of product flow. And adopts the positioning of current polygon, especially when the angle of polygon is obtuse, the accuracy of positioning will be affected, mainly the discharge valve in the process of unceasingly opening, closing impact, will make the position of valve sheet deviate, then affects the sealing property between each chamber, finally affects flow and pressure boosting effect. SUMMARY

[0003] The utility model wants to solve the technical problem to provide a kind of compact structure, it is easy to assemble, can effectively prevent drainage valve deviation, the diaphragm pump valve sheet mounting structure of stable and reliable operation.

[0004] The utility model provides a kind of diaphragm pump valve sheet mounting structure, including pump body, the water inlet cavity 10a, water outlet cavity 10b and multiple circumferential distribution compression cavities 10c are formed in the pump body, the side wall of the pump body is equipped with the water inlet 101 of the water inlet cavity 10a and the water outlet 102 of the water outlet cavity 10b, the end of the compression cavity 10c is equipped with the water suction hole 2011 of the water inlet cavity 10a and the drainage hole 2012 of the water outlet cavity 10b, the water suction hole 2011 is equipped with the one-way valve of making water from the water inlet cavity 10a one-way enter the compression cavity 10c;The end of the water outlet cavity 10b is equipped with the sealing surface 2a for installing drainage valve 5, the edge of the drainage valve 5 can cover drainage hole 2012 set on the sealing surface 2a, and make water from compression cavity 10c one-way enter the water outlet cavity 10b, the sealing surface 2a is equipped with the limiting structure for the radial location of drainage valve 5, the water outlet cavity 10b is equipped with the compression column 11 with the upper end of drainage valve 5 end portion and the axial location of drainage valve 5.

[0005] Further, the center of the sealing surface 2a is equipped with mounting hole 21, the lower end center of the drainage valve 5 is equipped with mounting column 54, can be embedded in the mounting hole and realize the installation fixation.

[0006] Furthermore, the limiting structures are multiple and arranged circumferentially.

[0007] Furthermore, the limiting structure has the same number as the compression chamber and is arranged circumferentially.

[0008] Furthermore, the limiting structure is disposed on the centerline between two adjacent compression cavities.

[0009] Furthermore, the limiting structure consists of a limiting protrusion and a limiting groove disposed between the sealing surface 2a and the drain valve 5.

[0010] Furthermore, the limiting structure includes limiting protrusions 22 evenly distributed circumferentially on the sealing surface 2a and limiting grooves 53 disposed on the drain valve 5 and corresponding to the limiting protrusions 22, wherein the cross-sections of the limiting protrusions and the limiting grooves are circular.

[0011] Furthermore, the drain valve 5 includes a circular valve body 51, the limiting structure is disposed between the valve body 51 and the sealing surface 2a, and the end face of the pressure column contacts the end face of the valve body 51; the valve body 51 has sealing plates 52 evenly distributed around its circumference, the same number as the compression chambers, which can respectively cover each of the drain holes 2012.

[0012] Furthermore, the pressure column 11 includes a column body 111, and the side wall of the column body 111 is evenly distributed with strip-shaped protrusions 112 of the same number as the compression chamber. The end face of the strip-shaped protrusions 112 forms a strip-shaped pressing surface, and the drain hole 2012 is located on the extension line of the length direction of the pressing surface.

[0013] Furthermore, the thickness of the valve body 51 is greater than the thickness of the sealing sheet 52, and the diameter of the pressure column 11 is 90%-130% of the diameter of the valve body 51.

[0014] Furthermore, the pump body includes a fluid chamber 1, a diaphragm chamber 2, and a diaphragm 3 arranged sequentially. The inlet chamber 10a and the outlet chamber 10b are formed between the fluid chamber 1 and the diaphragm chamber 2, and the compression chamber 10c is formed between the diaphragm chamber 2 and the diaphragm 3. The sealing surface 2a is disposed at the end of the diaphragm chamber 2 and faces the fluid chamber 1, and the pressure column 11 is disposed on the fluid chamber 1 and faces the diaphragm chamber 2.

[0015] This utility model relates to a diaphragm pump valve mounting structure. A limiting structure is installed between the drain valve and the sealing surface to achieve radial limiting of the drain valve, preventing displacement during continuous operation and ensuring the sealing performance of each chamber. This ensures unidirectional controllable water flow, improves the overall operational stability of the pump, extends its service life, and optimizes the user experience. Multiple limiting structures are evenly distributed circumferentially, effectively dispersing pressure, preventing localized wear, further improving the installation accuracy of the drain valve, and ensuring sealing effect and drainage efficiency. The number of limiting structures is the same as the number of compression chambers, improving the uniformity of force on the drain valve and ensuring uniform water output from each hole during drainage, avoiding displacement of the drain valve due to uneven force. The limiting structure is set on the centerline of adjacent drain holes and staggered with the pressing surface, which improves the installation reliability of the drain valve. At the same time, it can avoid the drain valve from being deformed by pressure, ensuring the operational reliability of the drain valve and extending its service life. Axial limiting is achieved by the pressure column, which is convenient and labor-saving to assemble, improves the installation reliability and stability of the drain valve, provides a guarantee for the long-term stable operation of the pump body, effectively reduces the maintenance frequency, reduces the use cost, and improves the overall work efficiency. The diaphragm pump valve plate installation structure of this utility model is compact and easy to assemble, which can ensure the stability and sealing of the drain valve, and improve the operational reliability and service life of the pump body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the diaphragm pump valve plate mounting structure of this utility model;

[0017] Figure 2 This is a sectional view of the diaphragm pump valve plate mounting structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0019] Figure 4 This is an exploded structural diagram of the diaphragm pump valve plate mounting structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the installation of the drain valve in the diaphragm pump valve plate mounting structure of this utility model;

[0021] Figure 6 This is a cross-sectional view of the diaphragm chamber of the diaphragm pump valve plate mounting structure of this utility model;

[0022] Figure 7 for Figure 4 Enlarged view of section B;

[0023] Figure 8 This is a schematic diagram of the structure of the drain valve in the diaphragm pump valve plate mounting structure of this utility model;

[0024] Figure 9This is a schematic diagram of the drain valve from another angle, illustrating the diaphragm pump valve plate mounting structure of this utility model.

[0025] Figure 10 This is a cross-sectional view of the fluid chamber of the diaphragm pump valve plate mounting structure of this utility model;

[0026] Figure 11 for Figure 10 Enlarged view of section C;

[0027] Figure 12 This is a cross-sectional view of the pressure column of the diaphragm pump valve plate mounting structure of this utility model. Detailed Implementation

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] See Figures 1-12 This utility model provides a diaphragm pump valve plate mounting structure, including a pump body. An inlet chamber 10a, an outlet chamber 10b, and a compression chamber 10c are formed within the pump body. Multiple compression chambers 10c are evenly distributed circumferentially. In this embodiment, there are six compression chambers. The inlet chamber 10a and the outlet chamber 10b are coaxially arranged. Specifically, the outlet chamber 10b has a circular cross-section, and the inlet chamber 10a is annular, located outside the outlet chamber 10b, forming a coaxial arrangement. Multiple compression chambers are located at the lower ends of the inlet and outlet chambers. An inlet 101 and an outlet 102 are provided on the side wall of the pump body. The inlet 101 connects to the inlet chamber 10a, serving as the main inlet of the pump body, and the outlet 102 connects to the outlet chamber 10a. b is connected to the main outlet of the pump body. At the same time, a suction hole 2011 and a drain hole 2012 are provided at the end of the compression chamber 10c. The suction hole 2011 is connected to the inlet chamber 10a. A one-way valve is provided on the suction hole 2011. The one-way valve is used to allow water to enter the compression chamber 10c from the inlet chamber 10a in one direction. Specifically, a one-way valve mounting hole 2013 is provided at the end of the compression chamber. The one-way valve is installed in the one-way valve mounting hole 2013. The one-way valve has a conical sealing surface for fitting against the suction hole 2011, thereby allowing water to enter the compression chamber 10c in one direction. The suction hole on each compression chamber can be one or more holes, and the drain hole on each compression chamber can be one or more holes.

[0030] A sealing surface 2a is provided at the end of the water outlet chamber 10b. This sealing surface 2a is located near the end of the compression chamber 10c. The sealing surface 2a is an arc-shaped structure concave towards the compression chamber. It is used to install the drain valve 5, also called a valve plate. Drain holes 2012 are provided on the sealing surface 2a, and each drain hole 2012 is evenly distributed circumferentially around the axis of the sealing surface 2a. The drain valve 5 is a circular rubber sheet structure, which is provided on the sealing surface 2a. The edge of the drain valve 5 can cover the drain hole 2012, thereby allowing water to flow unidirectionally from the compression chamber 10c. Entering the outlet chamber 10b, this application provides a limiting structure on the sealing surface 2a. This limiting structure is used to radially limit the drain valve 5 to prevent its radial rotation and displacement. At the same time, a pressure column 11 is provided in the outlet chamber 10b. The pressure column 11 is coaxial with the drain valve 5, and its end contacts the upper end of the drain valve 5, thereby axially limiting the drain valve 5. Through the limiting structure and the pressure column, the radial and axial installation and fixation of the drain valve 5 are achieved. The installation accuracy is high, the reliability is good, and it can effectively prevent displacement during use.

[0031] In this application, there are multiple limiting structures, which are arranged circumferentially around the axis of the drain valve. Preferably, they are evenly distributed circumferentially. In order to further improve the reliability and stability of radial positioning, and at the same time ensure the balance of the drain valve 5, in this embodiment, the number of limiting structures is the same as that of the compression chambers, and they are arranged circumferentially. Preferably, they are evenly distributed circumferentially, and the limiting structures are arranged on the centerline between two adjacent compression chambers.

[0032] In this embodiment, the limiting structure consists of a limiting protrusion and a limiting groove disposed between the sealing surface 2a and the drain valve 5. The limiting protrusion and the limiting groove cooperate to form a precise positioning mechanism to ensure the radial installation accuracy of the drain valve 5. In order to improve reliability, in this embodiment, the limiting protrusion and the limiting groove adopt an interference fit structure to avoid slight deflection of the gap.

[0033] Preferably, in this embodiment, the limiting structure includes limiting protrusions 22 disposed on the sealing surface 2a and limiting grooves 53 disposed on the drain valve 5. The limiting protrusions 22 are cylindrical, and their number is the same as the number of compression chambers, and they are evenly distributed circumferentially. The limiting protrusions 22 are disposed between two adjacent compression chambers, specifically, on the centerline between two adjacent compression chambers, and the limiting protrusions 22 are located inside the compression chambers. Correspondingly, the drain valve 5 is provided with limiting grooves 53 that match the limiting protrusions 22. The limiting grooves 53 are circular holes, and the depth of the limiting grooves 53 is greater than the height of the limiting protrusions, and the diameter of the limiting grooves is equal to or less than the diameter of the limiting protrusions. This ensures a tight fit between the limiting protrusions and the limiting grooves, prevents radial displacement, and improves the stability of the overall structure.

[0034] To further improve the installation reliability of the drain valve 5, especially its centering accuracy, a mounting hole 21 is provided at the center of the sealing surface 2a. The mounting hole 21 is a circular hole with a diameter larger than that of the limiting protrusion. At the same time, a mounting post 54 is provided at the center of the lower end of the drain valve 5. The mounting post 54 is a cylinder with a diameter that matches the mounting hole 21, preferably equal to or greater than the diameter of the mounting hole 21. This ensures that the mounting post 54 and the mounting hole 21 fit tightly together, improving the installation accuracy and fixing reliability of the drain valve 5, especially its centering accuracy.

[0035] The drain valve 5 is made of rubber and has a circular sheet structure. Specifically, the drain valve 5 includes a circular valve body 51. A limiting structure is set between the valve body 51 and the sealing surface 2a, and the end face of the pressure column contacts the end face of the valve body 51, thereby achieving axial limiting of the drain valve 5. The edge of the valve body 51 is provided with sealing plates 52. The number of sealing plates is the same as that of the compression chambers on the sealing surface 2a, and they are evenly distributed circumferentially. The sealing plates 52 correspond one-to-one with the drain holes 2012, that is, one sealing plate 52 corresponds to one drain hole 2012. It can cover the drain hole 2012, thereby ensuring that water can enter the outlet chamber 10b unidirectionally from the compression chamber 10c. The entire drain valve 5 forms a petal structure.

[0036] The pressure column 11 includes a cylindrical column 111, which is coaxial with the sealing surface. Multiple strip-shaped protrusions 112 are provided on the side wall of the column 111, evenly distributed circumferentially. Preferably, the number of strip-shaped protrusions 112 is the same as the number of compression chambers. The end faces of the strip-shaped protrusions 112 form strip-shaped pressing surfaces, which contact the end face of the drain valve 5 to achieve a tight fit and axial fixation of the drain valve 5. In this application, the drain hole 2012 is located on the extension line of the length direction of the pressing surface. (See reference...) Figure 12 The thickness of the valve body 51 is greater than the thickness of the sealing sheet 52, forming a height difference. At the same time, the diameter of the pressure column 11 is 90%-130% of the diameter of the valve body 51. Specifically, the pitch circle diameter formed by the pressing surfaces is 90%-130% of the diameter of the valve body 51, ensuring the installation reliability of the drain valve 5 and avoiding affecting the drainage of the sealing sheet. The strip-shaped pressing surfaces and the limiting structure are staggered, which improves the installation reliability of the drain valve. At the same time, it can avoid the drain valve from being deformed by pressure, ensuring the operational reliability of the drain valve and extending its service life.

[0037] In this application, the pump body includes a fluid chamber 1, a diaphragm chamber 2, and a diaphragm 3 arranged sequentially. A water inlet chamber 10a and a water outlet chamber 10b are formed between the fluid chamber 1 and the diaphragm chamber 2. The water inlet 101 and the water outlet 102 are provided on the side wall of the fluid chamber 1. A compression chamber 10c is formed between the diaphragm chamber 2 and the diaphragm 3. The diaphragm 3 is made of rubber and is elastic. By squeezing, the space of the compression chamber can be changed to realize water inlet and water outlet. The sealing surface 2a is provided at the end of the diaphragm chamber 2 and faces the fluid chamber 1. The pressure column 11 is provided on the fluid chamber 1 and faces the diaphragm chamber 2, which facilitates processing and assembly.

[0038] This utility model relates to a diaphragm pump valve mounting structure. A limiting structure is installed between the drain valve and the sealing surface to achieve radial limiting of the drain valve, preventing displacement during continuous operation and ensuring the sealing performance of each chamber. This ensures unidirectional controllable water flow, improves the overall operational stability of the pump, extends its service life, and optimizes the user experience. Multiple limiting structures are evenly distributed circumferentially, effectively dispersing pressure, preventing localized wear, further improving the installation accuracy of the drain valve, and ensuring sealing effect and drainage efficiency. The number of limiting structures is the same as the number of compression chambers, improving the uniformity of force on the drain valve and ensuring uniform water output from each hole during drainage, avoiding displacement of the drain valve due to uneven force. The limiting structure is set on the centerline of adjacent drain holes and staggered with the pressing surface, which improves the installation reliability of the drain valve. At the same time, it can avoid the drain valve from being deformed by pressure, ensuring the operational reliability of the drain valve and extending its service life. Axial limiting is achieved by the pressure column, which is convenient and labor-saving to assemble, improves the installation reliability and stability of the drain valve, provides a guarantee for the long-term stable operation of the pump body, effectively reduces the maintenance frequency, reduces the use cost, and improves the overall work efficiency. The diaphragm pump valve plate installation structure of this utility model is compact and easy to assemble, which can ensure the stability and sealing of the drain valve, and improve the operational reliability and service life of the pump body.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A diaphragm pump valve plate mounting structure, characterized in that: The pump includes a pump body, which has an inlet chamber, an outlet chamber, and multiple circumferentially distributed compression chambers. The side wall of the pump body has an inlet port communicating with the inlet chamber and an outlet port communicating with the outlet chamber. The end of each compression chamber has a suction hole communicating with the inlet chamber and a drain hole communicating with the outlet chamber. The suction hole has a one-way valve that allows water to flow unidirectionally from the inlet chamber into the compression chamber. The end of the outlet chamber has a sealing surface for installing a drain valve. The edge of the drain valve can cover the drain hole on the sealing surface and allow water to flow unidirectionally from the compression chamber into the outlet chamber. The sealing surface has a limiting structure for radially limiting the drain valve. The outlet chamber has a pressure column that contacts the upper end of the drain valve and axially limits its movement.

2. The diaphragm pump valve plate mounting structure as described in claim 1, characterized in that: The sealing surface has a mounting hole at its center, and the lower end of the drain valve has a mounting post that can be inserted into the mounting hole to achieve installation and fixation.

3. The diaphragm pump valve plate mounting structure as described in claim 1, characterized in that: The limiting structure is multiple and arranged circumferentially.

4. The diaphragm pump valve plate mounting structure as described in claim 1, characterized in that: The limiting structures are the same number as the compression cavities and are arranged circumferentially.

5. The diaphragm pump valve plate mounting structure as described in claim 4, characterized in that: The limiting structure is positioned on the centerline between two adjacent compression chambers.

6. The diaphragm pump valve plate mounting structure as described in claim 1, characterized in that: The limiting structure consists of a limiting protrusion and a limiting groove disposed between the sealing surface and the drain valve.

7. The diaphragm pump valve plate mounting structure as described in claim 1, characterized in that: The drain valve includes a circular valve body, the limiting structure is disposed between the valve body and the sealing surface, and the end face of the pressure column contacts the end face of the valve body; the valve body has sealing plates evenly distributed along its circumference, the same number as the compression chambers, which can respectively cover each of the drain holes.

8. The diaphragm pump valve plate mounting structure as described in claim 1, characterized in that: The pressure column includes a column body, and the side wall of the column body is evenly distributed with strip-shaped protrusions of the same number as the compression chambers. The end face of the strip-shaped protrusions forms a strip-shaped pressing surface, and the drain hole is located on the extension line of the pressing surface along its length.

9. The diaphragm pump valve plate mounting structure as described in claim 7, characterized in that: The thickness of the valve body is greater than the thickness of the sealing sheet, and the diameter of the pressure column is 90%-130% of the diameter of the valve body.

10. The diaphragm pump valve plate mounting structure as described in claim 1, characterized in that: The pump body includes a fluid chamber, a diaphragm chamber, and a diaphragm arranged in sequence. The inlet chamber and the outlet chamber are formed between the fluid chamber and the diaphragm chamber. The compression chamber is formed between the diaphragm chamber and the diaphragm. The sealing surface is disposed at the end of the diaphragm chamber and faces the fluid chamber. The pressure column is disposed on the fluid chamber and faces the diaphragm chamber.

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