Long-life diaphragm structure and corresponding diaphragm pump

Abstract

The utility model provides a long -life diaphragm structure and corresponding diaphragm pump, it includes push block, deformation membrane and diaphragm panel. The side of diaphragm panel is pump cavity, is provided with through -hole on diaphragm panel, and one end of push block is located in through -hole, and deformation membrane is connected around the periphery of one end of push block, and deformation membrane is connected between push block and the inner wall of through -hole, and diaphragm structure is in natural state, and push block is located in the one side of diaphragm panel away from pump cavity, and extrusion cavity is formed between the end surface of deformation membrane and push block, and deformation membrane is arc structure. The long -life diaphragm structure and corresponding diaphragm pump of the utility model through setting deformation membrane of arc structure, improve the deformation space of deformation membrane, can improve the service life of diaphragm structure.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm pumps, and in particular to a long-life diaphragm structure and a corresponding diaphragm pump. Background Technology

[0002] A diaphragm pump is a positive displacement pump that uses a flexible diaphragm as its power transmission and sealing core component, achieving fluid transport through the periodic reciprocating motion of the diaphragm. Its applications are very wide, such as inflating vehicle tires, basketballs, or balloons. It is also used for vacuuming in household appliances like floor scrubbers and breast pumps. Currently, existing diaphragm pumps generally suffer from problems such as short lifespan, low flow rate, and insufficient vacuuming ability.

[0003] Therefore, it is necessary to provide a long-life diaphragm structure and a corresponding diaphragm pump to solve the above-mentioned technical problems. Utility Model Content

[0004] This invention provides a long-life diaphragm structure and a corresponding diaphragm pump to solve the problems of short life, low flow rate, and insufficient vacuum in existing diaphragm air pumps.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a long-life diaphragm structure, which includes: a pusher block, a deformable membrane, and a diaphragm panel; In this design, one side of the diaphragm panel is a pump chamber, and a through hole is provided on the diaphragm panel. One end of the pusher is located in the through hole, and the deformable membrane is connected around the periphery of one end of the pusher. The deformable membrane is connected between the pusher and the inner wall of the through hole. In its natural state, the pusher is located on the side of the diaphragm panel facing away from the pump chamber, and a compression cavity is formed between the end face of the deformable membrane and the pusher. The deformable membrane has a curved structure.

[0006] In this invention, in its natural state, the deformable membrane protrudes from the diaphragm panel near the pump cavity.

[0007] In this invention, in its natural state, the deformable membrane is located between the end face of the diaphragm panel and the pusher block.

[0008] In this invention, the diaphragm panels of multiple diaphragm structures are connected as a whole, and the distance between adjacent deformable membranes is 0.75~1 times the thickness of the diaphragm panel.

[0009] In this invention, the thickness of the deformation membrane is 0.25~0.35 times the thickness of the diaphragm panel.

[0010] In this utility model, the push block, the deformation membrane, and the diaphragm panel are integrally formed. One end of the deformation membrane is connected to the end face of the push block, and the surface of the deformation membrane is flush with the edge of the push block. The other end of the deformation membrane is connected to the inner side of the through hole, and the surface of the deformation membrane is flush with the edge of the through hole. The inner diameter of the extrusion cavity at the end away from the push block is larger.

[0011] In this invention, the deformable membrane includes a first curved segment and a second curved segment. The first curved segment is connected to the end of the second curved segment away from the push block. The convex side of the first curved segment faces the extrusion cavity, and the concave side of the second curved segment faces the extrusion cavity. The length of the first curved segment is greater than the length of the second curved segment, and the curvature of the first curved segment is greater than the curvature of the second curved segment.

[0012] This utility model also includes a diaphragm pump that uses the above-mentioned long-life diaphragm structure. The diaphragm pump also includes an input umbrella valve, an output umbrella valve, a valve cover, a valve support, a diaphragm support, a base, a connecting rod, a connecting shaft, a crank, and a motor. The valve cover and the valve support are connected, and an input cavity and an output cavity are connected between the valve cover and the valve support. The valve cover is provided with an input hole communicating with the input cavity and an output hole communicating with the output cavity. The diaphragm support is connected to the side of the valve support away from the valve cover. The pump cavity is formed between the diaphragm support and the valve support. The pump cavity is connected to the input cavity and the output cavity. The input umbrella valve is unidirectionally sealed in the input cavity and the pump cavity. The output umbrella valve is unidirectionally sealed in the output cavity and the pump cavity. The base is connected between the motor and the diaphragm support. The crank is connected to the output end of the motor. The connecting rod is connected to the crank via the connecting shaft. The diaphragm panel is pressed between the diaphragm support and the valve support. The push block includes a cylindrical rod for connecting with the connecting rod. The cylindrical rod is provided with a spherical undercut. The connecting rod is provided with a snap groove for engaging with the undercut. The crank rotates to drive the diaphragm structure to compress or expand the space of the pump chamber.

[0013] In this invention, the diaphragm panel has an annular protrusion on the side near the pump cavity surrounding the deformable membrane, and the valve bracket has an annular groove on one side for positioning and engaging with the annular protrusion. The diaphragm panels of multiple diaphragm structures are connected as one unit, and the multiple annular protrusions are intersected and connected.

[0014] In this utility model, the diaphragm panel is provided with positioning holes at its four ends, the diaphragm support is provided with a positioning post on one side that is positioned and engaged with the positioning hole, and the valve support is provided with a positioning groove on one side that is positioned and engaged with the positioning post.

[0015] Compared with the prior art, the advantages of this invention are as follows: The long-life diaphragm structure and corresponding diaphragm pump of this invention, by setting a curved deformation membrane, increases the deformation space of the deformation membrane, thereby improving the service life of the diaphragm structure. Simultaneously, by maximizing the compression between multiple deformation membranes and making the diaphragm panels between them smaller, the deformation space of the deformation membrane is increased, and the inner diameter of the end of the extrusion chamber away from the push block is larger, which is more conducive to the deformation of the deformation membrane, making the deformation membrane less prone to damage and extending its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of this utility model.

[0017] Figure 1 This is a schematic diagram of the exploded structure of the diaphragm pump of this utility model.

[0018] Figure 2 This is a schematic diagram of the first embodiment of the long-life diaphragm structure of this utility model.

[0019] Figure 3 for Figure 2 A cross-sectional view of the diaphragm structure.

[0020] Figure 4 This is a schematic diagram of the second embodiment of the long-life diaphragm structure of this utility model.

[0021] Figure 5 for Figure 4 A cross-sectional view of the diaphragm structure.

[0022] Figure 6 This is a cross-sectional view of the third embodiment of the long-life diaphragm structure of this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.

[0025] The terms "first" and "second" in this utility model are used for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as a restriction on the order of events.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, a connection can be a detachable connection or a connection of an integral structure; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Existing diaphragm air pumps generally suffer from problems such as short lifespan, low flow rate, and insufficient vacuum.

[0028] The following is a preferred embodiment of a diaphragm pump provided by this utility model that can solve the above-mentioned technical problems.

[0029] Please refer to Figure 1 ,in Figure 1 This is a schematic diagram of the exploded structure of the diaphragm pump of this utility model.

[0030] In the diagram, units with similar structures are represented by the same labels.

[0031] This embodiment provides a diaphragm pump, which includes a long-life diaphragm structure 16, an input umbrella valve 15, an output umbrella valve 14, a valve cover 11, a valve support 12, a diaphragm support 13, a base 1A, a connecting rod 17, a connecting shaft 18, a crank 19, and a motor 1B.

[0032] The valve cover 11 and valve support 12 are connected, with an input chamber and an output chamber between them. The valve cover 11 is provided with an input hole communicating with the input chamber and an output hole communicating with the output chamber. A sealing gasket 1C can be provided between the valve cover 11 and the valve support 12 to form a sealed input chamber and output chamber. The diaphragm support 13 is connected to the side of the valve support 12 away from the valve cover 11, forming a pump chamber 132 between the diaphragm support 13 and the valve support 12. The pump chamber 132 communicates with the input chamber and the output chamber. The input umbrella valve 15 is unidirectionally sealed within the input chamber and the pump chamber 132, and the output umbrella valve 14 is unidirectionally sealed within the output chamber and the pump chamber 132.

[0033] The base 1A is connected between the motor 1B and the diaphragm support 13. The crank 19 is connected to the output end of the motor 1B. The connecting rod 17 is connected to the crank 19 through the connecting shaft 18. The diaphragm panel 23 is pressed between the diaphragm support 13 and the valve support 12. The push block 21 includes a cylindrical rod 211 for connecting with the connecting rod 17. The cylindrical rod 211 is provided with a spherical undercut part 212. The connecting rod 17 is provided with a snap groove 171 for engaging with the undercut part 212, so that the cylindrical rod 211 can form a stable movable connection with the connecting rod 17.

[0034] Please refer to Figure 2 and Figure 3 The long-life diaphragm structure 16 of this embodiment includes a pusher block 21, a deformable membrane, and a diaphragm panel 23.

[0035] In this design, one side of the diaphragm panel 23 forms a pump chamber 132. A through-hole is provided on the diaphragm panel 23, and one end of the pusher block 21 is located within the through-hole. A deformable membrane surrounds and connects to the periphery of one end of the pusher block 21, connecting the pusher block 21 and the inner wall of the through-hole. In its natural state, the pusher block 21 is located on the side of the diaphragm panel 23 facing away from the pump chamber. A compression chamber 25 is formed between the end faces of the deformable membrane and the pusher block 21. The compression chamber 25 facilitates the pumping out of a larger flow rate by the diaphragm structure 16. The deformable membrane has a curved structure. The large deformation space of the deformable membrane improves the service life of the diaphragm structure 16.

[0036] In this embodiment, multiple diaphragm panels 23 with diaphragm structures are connected as a single unit, and the distance between adjacent deformable membranes is 0.75~1 times the thickness of the diaphragm panel 23. The inner diameter of the end of the extrusion chamber 25 away from the pusher block 21 is larger. By maximizing the compression between multiple deformable membranes, the diaphragm panels between the multiple deformable membranes are made smaller, increasing the deformation space of the deformable membranes. Furthermore, the inner diameter of the end of the extrusion chamber 25 away from the pusher block is larger, which is more conducive to the deformation of the deformable membranes, making them less prone to breakage and extending their lifespan.

[0037] In this embodiment, the thickness of the deformable membrane is 0.25~0.35 times the thickness of the diaphragm panel 23.

[0038] In this embodiment, the pusher block 21, the deformable membrane, and the diaphragm panel 23 are integrally formed. One end of the deformable membrane is connected to the end face of the pusher block 21, and the surface of the deformable membrane is flush with the edge of the pusher block 21. The other end of the deformable membrane is connected to the inner side of the through hole, and the surface of the deformable membrane is flush with the edge of the through hole. The structure is stable and has high connection strength. In this embodiment, the deformable membrane can have various implementation structures, such as Figure 3 The deformable membrane 22a in the middle, such as Figure 5 Deformation membrane 22b in, such as Figure 6 The deformable membrane 22c in the middle.

[0039] For details, please refer to Figure 2 and Figure 3 In its natural state, the deformable membrane 22a of the diaphragm structure 16 protrudes from the side of the diaphragm panel 23 closest to the pump cavity. The deformable membrane 22a has a large deformation space, which can improve the service life of the diaphragm structure 16.

[0040] Please refer to Figure 4 and Figure 5 In its natural state, the deformable membrane 22b of the diaphragm structure 16 is located between the end faces of the diaphragm panel 23 and the pusher block 21. The deformable membrane 22b has a large deformation space, which can improve the service life of the diaphragm structure 16.

[0041] Please refer to Figure 6 The deformable membrane 22c includes a first curved segment 22c1 and a second curved segment 22c2. The first curved segment 22c1 is connected to the end of the second curved segment 22c2 away from the pusher block 21. The convex side of the first curved segment 22c1 faces the extrusion chamber 25, and the concave side of the second curved segment 22c2 faces the extrusion chamber 25. The length of the first curved segment 22c1 is greater than the length of the second curved segment 22c2, and the curvature of the first curved segment 22c1 is greater than the curvature of the second curved segment 22c2. This design greatly increases the deformation space of the deformable membrane 22c, and the deformable membrane 22c can adapt well to the up-and-down movement of the pusher block 21 without significant bending, making it less prone to damage.

[0042] Please refer to Figure 2 and Figure 4 In this embodiment, the diaphragm panel 23 has an annular protrusion 24 surrounding the deformable membrane on the side near the pump cavity, and the valve support 12 has an annular groove for positioning and engaging with the annular protrusion 24 on one side. The diaphragm panels 23 of multiple diaphragm structures are connected as one unit, and the multiple annular protrusions 24 are intersecting and connected. This allows the diaphragm panel 23 to be more stably clamped between the valve support 12 and the diaphragm support 13, and the structure is more compact, resulting in higher strength of the diaphragm structure 16.

[0043] Please refer to Figure 1 and Figure 2 In this embodiment, the diaphragm panel 23 is provided with positioning holes 231 at its four ends, the diaphragm support 13 is provided with a positioning post 131 on one side that is positioned and engaged with the positioning hole 231, and the valve support is provided with a positioning groove on one side that is positioned and engaged with the positioning post 131. This allows the valve support 12, the diaphragm panel 23, and the diaphragm support 13 to form a more stable mating structure.

[0044] The working principle of this utility model is as follows: the crank 19 is driven to rotate by the motor 1B. The crank 19 drives the connecting rod 17 to move through the connecting shaft 18. Since the crank 19 has an eccentric inclined hole, the connecting shaft 18 will have an inclined angle. Thus, the crank 19 will drive the connecting shaft 18, the connecting rod 17 and the diaphragm structure 16 to reciprocate. That is, the rotational motion of the motor 1B is converted into the up-and-down reciprocating motion of the push block 21, thereby driving the diaphragm structure 16 to compress or expand the space of the pump chamber.

[0045] Specifically, when the pusher 21 moves upward, it can compress the space of the pump chamber 132, making the volume of the pump chamber 132 smaller and generating a lot of pressure. The pressure will push the gas inside the pump chamber 132 to the output chamber and discharge it.

[0046] When the pusher block 21 moves downward, it expands the space of the pump chamber 132. As the volume of the pump chamber 132 increases, the pressure in the pump chamber 132 decreases, creating a pressure difference between the outside environment and the pump chamber 132. The external atmospheric pressure is greater than the pressure in the pump chamber 132. The gas entering through the inlet pushes open the inlet umbrella valve 15 and then enters the pump chamber 132.

[0047] This creates an intake and exhaust action. As the motor 1B rotates continuously, the diaphragm structure 16 continuously compresses or expands the space of the pump chamber 132, creating a continuous flow of gas.

[0048] This completes the process of the diaphragm pump drawing in and discharging fluid in this embodiment.

[0049] The long-life diaphragm structure and corresponding diaphragm pump of this preferred embodiment improve the service life of the diaphragm structure by setting a curved deformation membrane, thereby increasing the deformation space of the deformation membrane. At the same time, by maximizing the compression between multiple deformation membranes and making the diaphragm panels between multiple deformation membranes smaller, the deformation space of the deformation membrane is increased, and the inner diameter of the end of the extrusion chamber away from the push block is larger, which is more conducive to the deformation of the deformation membrane, making the deformation membrane less prone to damage and extending its service life.

[0050] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A long-life diaphragm structure, characterized in that, include: Push block, deformable membrane, and diaphragm panel; In this design, one side of the diaphragm panel is a pump chamber, and a through hole is provided on the diaphragm panel. One end of the pusher is located in the through hole, and the deformable membrane is connected around the periphery of one end of the pusher. The deformable membrane is connected between the pusher and the inner wall of the through hole. In its natural state, the pusher is located on the side of the diaphragm panel facing away from the pump chamber, and a compression cavity is formed between the end face of the deformable membrane and the pusher. The deformable membrane has a curved structure.

2. The long-life diaphragm structure according to claim 1, characterized in that, In its natural state, the deformable membrane protrudes from the diaphragm panel near the pump cavity.

3. The long-life diaphragm structure according to claim 1, characterized in that, In its natural state, the deformable membrane is located between the end face of the diaphragm panel and the pusher block.

4. The long-life diaphragm structure according to claim 1, characterized in that, The diaphragm panels of the plurality of diaphragm structures are connected as a whole, and the distance between adjacent deformable membranes is 0.75 to 1 times the thickness of the diaphragm panel.

5. The long-life diaphragm structure according to claim 1, characterized in that, The thickness of the deformable membrane is 0.25~0.35 times the thickness of the diaphragm panel.

6. The long-life diaphragm structure according to claim 1, characterized in that, The push block, the deformation membrane, and the diaphragm panel are integrally formed. One end of the deformation membrane is connected to the end face of the push block, and the surface of the deformation membrane is flush with the edge of the push block. The other end of the deformation membrane is connected to the inner side of the through hole, and the surface of the deformation membrane is flush with the edge of the through hole. The inner diameter of the extrusion chamber is larger at the end away from the push block.

7. The long-life diaphragm structure according to claim 1, characterized in that, The deformable membrane includes a first curved segment and a second curved segment. The first curved segment is connected to the end of the second curved segment away from the push block. The convex side of the first curved segment faces the extrusion cavity, and the concave side of the second curved segment faces the extrusion cavity. The length of the first curved segment is greater than the length of the second curved segment, and the curvature of the first curved segment is greater than the curvature of the second curved segment.

8. A diaphragm pump, characterized in that, Using the long-life diaphragm structure described in any of claims 1-7, the diaphragm pump further includes an input umbrella valve, an output umbrella valve, a valve cover, a valve support, a diaphragm support, a base, a connecting rod, a connecting shaft, a crank, and a motor. The valve cover and the valve support are connected, and an input cavity and an output cavity are connected between the valve cover and the valve support. The valve cover is provided with an input hole communicating with the input cavity and an output hole communicating with the output cavity. The diaphragm support is connected to the side of the valve support away from the valve cover. The pump cavity is formed between the diaphragm support and the valve support. The pump cavity is connected to the input cavity and the output cavity. The input umbrella valve is unidirectionally sealed in the input cavity and the pump cavity. The output umbrella valve is unidirectionally sealed in the output cavity and the pump cavity. The base is connected between the motor and the diaphragm support. The crank is connected to the output end of the motor. The connecting rod is connected to the crank via the connecting shaft. The diaphragm panel is pressed between the diaphragm support and the valve support. The push block includes a cylindrical rod for connecting with the connecting rod. The cylindrical rod is provided with a spherical undercut. The connecting rod is provided with a snap groove for engaging with the undercut. The crank rotates to drive the diaphragm structure to compress or expand the space of the pump chamber.

9. The diaphragm pump according to claim 8, characterized in that, The diaphragm panel has an annular protrusion around the deformable membrane on the side near the pump chamber, and the valve bracket has an annular groove on one side for positioning and engaging with the annular protrusion. The diaphragm panels of multiple diaphragm structures are connected as one unit, and multiple annular protrusions are intersected and connected.

10. The diaphragm pump according to claim 8, characterized in that, The diaphragm panel has positioning holes at its four ends, the diaphragm support has a positioning post on one side that is positioned and engaged with the positioning hole, and the valve support has a positioning groove on one side that is positioned and engaged with the positioning post.

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