Pump with double umbrella-shaped valve

Abstract

The pump with the double-umbrella-shaped valve comprises a pump body and a piston assembly, the pump body is provided with an inner cavity, a water inlet and a water outlet, the water inlet and the water outlet are communicated with the inner cavity, and the inner cavity is connected with the piston assembly in a sliding mode. The water inlet is provided with a first limiting plate and a first umbrella-shaped valve, the water outlet is provided with a second limiting plate and a second umbrella-shaped valve, and when the first umbrella-shaped valve and the second umbrella-shaped valve are closed due to pressure, limiting grooves formed in limiting gaskets are used for limiting deformation of umbrella-shaped parts of the first umbrella-shaped valve and the second umbrella-shaped valve; the umbrella-shaped part of the umbrella-shaped valve is not prone to deformation, the sealing performance and durability of the pump are improved, the technical problem that in the prior art, a valve of a pump is prone to deformation, and consequently the sealing performance becomes low is solved, and the phenomenon that cleaning equipment does not discharge water or flushing pressure is obviously reduced is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment structure, and in particular to a pump with double umbrella-shaped valves. Background Technology

[0002] With the rapid development of society and the improvement of people's living standards, people are paying more attention to daily care. As new cleaning products that integrate brushing and rinsing, such as multi-functional electric toothbrushes and water flossers, become more popular in people's daily lives, people are also placing higher demands on the cleaning efficiency and durability of cleaning products.

[0003] Chinese utility model patent application number 202220430611.X discloses a miniature plunger foam pump. Its inlet is equipped with an air-water hinge to control the liquid inflow and increase the pressure on the liquid in the cavity. The outlet is equipped with a silicone gasket valve to control the liquid outflow and prevent backflow. However, the air-water hinge and silicone gasket valve of this pump are easily deformed due to material and environmental factors, resulting in reduced sealing performance. This can cause the water flosser to stop dispensing water or the flushing pressure to drop significantly. Utility Model Content

[0004] To address the technical problem in the prior art where pump valves are prone to deformation, leading to reduced sealing performance, this utility model provides a pump with double umbrella-shaped valves. The inlet and outlet are respectively equipped with a first umbrella-shaped valve and a second umbrella-shaped valve that are not easily deformed, thereby improving the pump's sealing performance and preventing phenomena such as cleaning equipment not discharging water or a significant reduction in flushing pressure.

[0005] To achieve the above objectives, this utility model provides a pump with double umbrella-shaped valves, including a pump body and a piston assembly. The pump body has an inner cavity and an inlet and an outlet communicating with the inner cavity. The inner cavity is slidably connected to the piston assembly. The inlet has a first limiting plate and a first umbrella-shaped valve. The first limiting plate has a first through hole and a first limiting groove. The first limiting groove faces the inner cavity. The stem of the first umbrella-shaped valve extends outward from the inlet through the first through hole. The first umbrella-shaped valve and the first through hole are movably connected. The umbrella-shaped portion of the first umbrella-shaped valve is disposed in the first limiting groove. The outlet has a second limiting plate and a second umbrella-shaped valve. The second limiting plate has a second through hole and a second limiting groove. The second limiting groove faces outward from the outlet. The stem of the second umbrella-shaped valve extends outward from the inner cavity through the second through hole. The second umbrella-shaped valve and the second through hole are movably connected. The umbrella-shaped portion of the second umbrella-shaped valve is disposed in the second limiting groove.

[0006] Preferably, the first through hole includes a water inlet hole and a first limiting hole, the stem of the first umbrella valve passes through the first limiting hole, and the first umbrella valve and the first limiting hole are movably connected; the second through hole includes a water outlet hole and a second limiting hole, the stem of the second umbrella valve passes through the second limiting hole, and the second umbrella valve and the second limiting hole are movably connected.

[0007] Preferably, the bottom diameter of the first limiting groove is equal to the bottom diameter of the umbrella-shaped portion of the first umbrella valve; the bottom diameter of the second limiting groove is equal to the bottom diameter of the umbrella-shaped portion of the second umbrella valve.

[0008] Preferably, the inner cavity includes a first inner cavity and a second inner cavity that are connected, the diameter of the first inner cavity being larger than the diameter of the second inner cavity; the second inner cavity is connected to the water inlet and the water outlet, and the first inner cavity is provided with a smooth stainless steel layer, the stainless steel layer being slidably connected to the piston assembly.

[0009] Preferably, a first sealing ring is provided between the water inlet and the first limiting plate; and a second sealing ring is provided between the water outlet and the first limiting plate.

[0010] Preferably, the extension portion of the first umbrella valve after the stem passes through the first limiting hole is provided with a first annular protrusion, the diameter of which is larger than the diameter of the first limiting hole; the extension portion of the second umbrella valve after the stem passes through the second limiting hole is provided with a second annular protrusion, the diameter of which is larger than the diameter of the second limiting hole.

[0011] Compared with the prior art, the pump with double umbrella valves provided by this utility model has a first limiting plate and a first umbrella valve at the inlet, and a second limiting plate and a second umbrella valve at the outlet. When the umbrella-shaped parts of the first umbrella valve and the second umbrella valve are closed due to pressure on their tops, the limiting grooves provided by the limiting pads restrict the deformation of the umbrella-shaped parts of the first umbrella valve and the second umbrella valve, making the umbrella-shaped parts of the umbrella valves less prone to deformation, thereby allowing the pump to maintain better sealing and longer durability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a pump with double umbrella-shaped valves according to an embodiment of the present invention;

[0013] Figure 2 This is a cross-sectional structural diagram of a pump with double umbrella-shaped valves according to an embodiment of the present invention;

[0014] Figure 3 An exploded view of a pump with double umbrella-shaped valves according to an embodiment of this utility model;

[0015] Figure 4 This is a schematic diagram of the umbrella valve according to an embodiment of the present utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the limiting plate in an embodiment of the present utility model.

[0017] The symbols for the main components are explained below:

[0018] 1. Pump body; 2. Piston assembly; 3. Inlet; 31. First umbrella valve; 311. First annular protrusion; 32. First limiting plate; 321. First through hole; 3211. Inlet hole; 3212. First limiting hole; 322. First limiting groove; 33. First sealing ring; 34. Sealing cover; 4. Outlet; 41. Second umbrella valve; 411. Second annular protrusion; 42. Second limiting plate; 421. Second through hole; 4211. Outlet hole; 4212. Second limiting hole; 422. Second limiting groove; 43. Second sealing ring; 5. Inner cavity; 51. First inner cavity; 511. Stainless steel layer; 52. Second inner cavity. Detailed Implementation

[0019] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0020] In the following description, specific examples are given to provide a more in-depth understanding of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. It should be understood that the specific embodiments described are only used to explain the present invention and are not intended to limit the present invention.

[0021] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the said feature, integral, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, or combinations thereof.

[0022] To address the aforementioned technical problems, this application provides a pump with a double umbrella-shaped valve. Please refer to the appendix. Figure 1 To be continued Figure 5The system includes a pump body 1 and a piston assembly 2. The pump body 1 has an inner cavity 5, which includes a first inner cavity 51 and a second inner cavity 52. ​​The diameter of the first inner cavity 51 is larger than the diameter of the second inner cavity 52, so that the liquid in the first inner cavity 51 is pressurized when it rushes into the second inner cavity 52, thereby enhancing the impact force of the liquid. The second inner cavity 52 is connected to an inlet 3 and an outlet 4. The inlet 3 is provided with a first limiting plate 32 and a first umbrella valve 31 to control the liquid flowing into the inner cavity 5. The outlet 4 is provided with a second limiting plate 42 and a second umbrella valve 41 to control the liquid flowing out of the inner cavity 5. The inlet is also provided with a sealing cap 34 to facilitate connection with an external water inlet pipe.

[0023] The piston assembly 2 reciprocates backward and forward in the first inner cavity 5, which drives the opening and closing of the first umbrella valve 31 and the second umbrella valve 41. The reciprocating motion of the first umbrella valve 31 and the second umbrella valve 41 opening and closing is staggered.

[0024] The first limiting plate 32 is provided with a first through hole 321 and a first limiting groove 322. The first through hole 321 includes a water inlet hole 3211 and a first limiting hole 3212. The first limiting groove 322 faces the second inner cavity 52. ​​The rod of the first umbrella valve 31 extends outward from the water inlet 3 through the first limiting hole 3212. The first umbrella valve 31 and the first limiting hole 3212 are movably connected. The umbrella-shaped part of the first umbrella valve 31 is disposed in the first limiting groove 322 to limit the degree of deformation of the umbrella-shaped part of the first umbrella valve 31, prevent the umbrella-shaped part of the first umbrella valve 31 from deforming due to pressure on its top, and enhance the sealing performance of the first umbrella valve 31.

[0025] The extension portion of the first umbrella valve 31 after the stem passes through the first limiting hole 3212 is provided with a first annular protrusion 311. The diameter of the first annular protrusion 311 is larger than the diameter of the first limiting hole 3212, which is used to limit the movement space of the first umbrella valve 31 so that the first umbrella valve 31 will not separate from the first limiting plate 32 when it is opened; a first sealing ring 33 is provided between the water inlet 3 and the first limiting plate 32 to enhance the sealing performance of the first umbrella valve 31 when it is closed.

[0026] The second limiting plate 42 is provided with a second through hole 421 and a second limiting groove 422. The second through hole 421 includes a water outlet hole 4211 and a second limiting hole 4212. The second limiting groove 422 faces the second inner cavity 52. ​​The rod of the second umbrella valve 41 extends through the second limiting hole 4212 toward the second inner cavity 52. ​​The second umbrella valve 41 and the second limiting hole 4212 are movably connected. The umbrella-shaped part of the second umbrella valve 41 is disposed in the second limiting groove 422 to limit the degree of deformation of the umbrella-shaped part of the first umbrella valve 31, prevent the umbrella-shaped part of the first umbrella valve 31 from deforming due to pressure on its top, and enhance the sealing performance of the first umbrella valve 31.

[0027] The extension portion of the second umbrella valve 41 after the stem passes through the second limiting hole 4212 is provided with a second annular protrusion 411. The diameter of the second annular protrusion 411 is larger than the diameter of the second limiting hole 4212, which is used to limit the movement space of the second umbrella valve 41 so that the second umbrella valve 41 will not separate from the second limiting plate 42 when it is opened; a second sealing ring 43 is provided between the outlet 4 and the first limiting plate 32 to enhance the sealing performance of the second umbrella valve 41 when it is closed.

[0028] The following is a further explanation of the specific work status:

[0029] The piston assembly 2 performs a reciprocating motion of retraction and forward movement in the first inner cavity 5;

[0030] When the piston assembly 2 retracts in the first inner cavity 51, the pressure in the inner cavity 5 decreases;

[0031] Because the pressure inside the cavity 5 is less than the pressure outside the inlet 3, the first umbrella valve 31 moves toward the second cavity 52 due to the pressure. The bottom of the umbrella-shaped part of the first umbrella valve 31 separates from the first limiting groove 322. Because the diameter of the first annular protrusion 311 is greater than the diameter of the first limiting hole 3212, the first umbrella valve 31 is fixed on the first limiting plate 32. The first umbrella valve 31 opens, and the liquid is drawn into the second cavity 52 through the inlet hole 3211.

[0032] Because the pressure inside the cavity 5 is less than the pressure outside the outlet 4, the second umbrella valve 41 moves towards the second inner cavity 52 due to the pressure. The bottom of the umbrella-shaped part of the second umbrella valve 41 fits tightly with the bottom of the second limiting groove 422, and the second umbrella valve 41 closes. Because the bottom diameter of the umbrella-shaped part of the second umbrella valve 41 is equal to the bottom diameter of the second limiting groove 422, the umbrella-shaped part of the second umbrella valve 41 will not deform due to the pressure on its top, and has strong sealing performance. This prevents the liquid outside the outlet 4 from flowing back into the inner cavity 5 and the liquid in the inner cavity 5 from flowing out of the outlet 4. This prevents the pressure inside the cavity 5 from increasing due to insufficient sealing of the second umbrella valve 41, thereby improving the pumping efficiency of the inlet 3 and improving the hygiene of the liquid in the inner cavity 5.

[0033] When the piston assembly 2 moves forward in the first inner cavity 51, the pressure in the inner cavity 5 increases;

[0034] Because the pressure inside the cavity 5 is greater than the pressure outside the inlet 3, the first umbrella valve 31 moves outward from the inlet 3 due to the pressure on its top. The bottom of the umbrella-shaped part of the first umbrella valve 31 fits tightly with the bottom of the first limiting groove 322, and the first umbrella valve 31 closes. Because the bottom diameter of the umbrella-shaped part of the first umbrella valve 31 is equal to the bottom diameter of the first limiting groove 322, the umbrella-shaped part of the first umbrella valve 31 will not deform due to the pressure on its top, and has strong sealing performance. This prevents the liquid in the cavity 5 from flowing back to the outside of the inlet 3, and prevents the pressure in the cavity 5 from decreasing due to insufficient sealing of the first umbrella valve 31. This avoids the situation where the impact force is insufficient when the liquid rushes out of the outlet 4 due to insufficient sealing.

[0035] Because the pressure in the inner cavity 5 is greater than the pressure at the outlet 4, the second umbrella valve 41 moves towards the outlet 4 due to the pressure. The bottom of the umbrella-shaped part of the second umbrella valve 41 separates from the second limiting groove 422. Because the diameter of the second annular protrusion 411 is greater than the diameter of the second limiting hole 4212, the second umbrella valve 41 is limited on the second limiting plate 42. When the second umbrella valve 41 opens, the liquid is flushed out from the inner cavity 5 through the outlet hole 4211 under the action of pressure, forming a water column with impact force that sprays out from the outlet of the cleaning equipment, thus achieving the purpose of cleaning the deposits on the teeth by pressurizing the water column.

[0036] In this embodiment, the bottom diameter of the umbrella-shaped portion of the first umbrella valve 31 and the second umbrella valve 41 is equal to the bottom diameter of the first limiting groove 322 and the second limiting groove 422, so that the umbrella-shaped portion of the first umbrella valve 31 and the second umbrella valve 41 can be completely fitted with the first limiting groove 322 and the second limiting groove 422, avoiding deformation of the umbrella-shaped portion of the first umbrella valve 31 and the second umbrella valve 41, and improving the sealing effect of the first umbrella valve 31 and the second umbrella valve 41.

[0037] In this embodiment, the first inner cavity 51 is provided with a smooth stainless steel layer 511, which is slidably connected to the piston assembly 2. This reduces the friction between the first inner cavity 51 and the piston assembly 2 and enhances the sealing of the first inner cavity 51, so that the liquid in the inner cavity 5 will not leak out due to insufficient sealing between the first inner cavity 51 and the piston assembly 2, thus providing better protection for the electronic circuit.

[0038] The advantages of this utility model are:

[0039] This utility model provides a pump with double umbrella-shaped valves, which solves the technical problem in the prior art where the valves of the pump are easily deformed, resulting in low sealing performance. By limiting the deformation of the umbrella-shaped parts of the first and second umbrella-shaped valves through the limiting groove of the limiting gasket, the umbrella-shaped parts of the umbrella-shaped valves are not easily deformed, thereby improving the sealing performance of the pump and avoiding phenomena such as no water output or significant reduction in flushing pressure in cleaning equipment.

[0040] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A pump with double umbrella-shaped valves, comprising a pump body and a piston assembly, characterized in that: The pump body has an inner cavity and an inlet and an outlet communicating with the inner cavity. The inner cavity is slidably connected to the piston assembly. The inlet has a first limiting plate and a first umbrella valve. The first limiting plate has a first through hole and a first limiting groove. The first limiting groove faces the inner cavity. The rod of the first umbrella valve extends outward from the inlet through the first through hole. The first umbrella valve and the first through hole are movably connected. The umbrella-shaped part of the first umbrella valve is disposed in the first limiting groove. The outlet has a second limiting plate and a second umbrella valve. The second limiting plate has a second through hole and a second limiting groove. The second limiting groove faces outward from the outlet. The rod of the second umbrella valve extends outward from the inner cavity through the second through hole. The second umbrella valve and the second through hole are movably connected. The umbrella-shaped part of the second umbrella valve is disposed in the second limiting groove.

2. The pump with double umbrella-shaped valves according to claim 1, characterized in that: The first through hole includes a water inlet hole and a first limiting hole. The stem of the first umbrella valve passes through the first limiting hole, and the first umbrella valve and the first limiting hole are movably connected. The second through hole includes a water outlet hole and a second limiting hole. The stem of the second umbrella valve passes through the second limiting hole, and the second umbrella valve and the second limiting hole are movably connected.

3. The pump with double umbrella-shaped valves according to claim 1, characterized in that: The bottom diameter of the first limiting groove is equal to the bottom diameter of the umbrella-shaped portion of the first umbrella valve; the bottom diameter of the second limiting groove is equal to the bottom diameter of the umbrella-shaped portion of the second umbrella valve.

4. The pump with double umbrella-shaped valves according to claim 1, characterized in that: The inner cavity includes a first inner cavity and a second inner cavity that are connected. The diameter of the first inner cavity is larger than the diameter of the second inner cavity. The second inner cavity is connected to the water inlet and the water outlet. The first inner cavity is provided with a smooth stainless steel layer, and the stainless steel layer is slidably connected to the piston assembly.

5. The pump with double umbrella-shaped valves according to claim 1, characterized in that: A first sealing ring is provided between the water inlet and the first limiting plate; a second sealing ring is provided between the water outlet and the first limiting plate.

6. The pump with double umbrella-shaped valves according to claim 2, characterized in that: The first umbrella valve has a first annular protrusion on its extension portion after the stem passes through the first limiting hole, and the diameter of the first annular protrusion is larger than the diameter of the first limiting hole; the second umbrella valve has a second annular protrusion on its extension portion after the stem passes through the second limiting hole, and the diameter of the second annular protrusion is larger than the diameter of the second limiting hole.

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