Plunger type one-way valve

Abstract

The utility model discloses a plunger type one-way valve which comprises a shell, a valve body and a valve element, the shell is of a round barrel structure with a plurality of flow guide holes formed in the bottom, the valve body is arranged in the shell in a semi-embedded mode, a space for movement of the valve element is formed in the top end of the shell and the top end of the valve body, a plurality of valve clacks are arranged at the top end of the valve body, and the valve element is of a structural body with a T-shaped section. The valve element is movably arranged at the front end of the valve body and slidably connected with the valve clack, and the top face of the valve element is matched with the bottom face of the inner side of the shell. The valve body, the valve element and the flow guide holes in the bottom of the outer shell are correspondingly arranged, the outer shell of the valve body is made of hard plastic materials, the valve element is made of soft plastic materials and can adapt to the valve body, the inner bottom end of the outer shell is provided with the moving space of the valve element, automatic control and check of liquid are achieved through the flow direction of the liquid, and reliability is better. The device is simple in structure, small in size, convenient to process and use, low in cost, safe, reliable, wider in application range and higher in popularization value.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation equipment technology, and in particular to a plunger-type one-way valve. Background Technology

[0002] Check valves are typically used in hydraulic or pneumatic systems to prevent the backflow of oil or gas. In rehabilitation equipment and medical devices, if a check valve fails or becomes blocked, it must be replaced promptly, otherwise it could cause a serious accident. Replacing a check valve will inevitably increase the operating cost.

[0003] The current market's plunger pump check valves are complex in structure, large in size, and mostly made of metal, which limits their application areas. Our company's patent CN220378953U, entitled "Plunger Pump Check Valve," has achieved good results in practical applications, but there is still much room for improvement, and further refinement is needed. At the same time, it can also reduce the cost of use.

[0004] Based on the existing patented structure, our engineering and technical personnel have continuously optimized and improved it, and developed a plunger-type check valve with a simpler structure, smaller size, easier processing, greater safety and reliability, lower production cost, wider range of applications, and better adaptability to meet the current needs of rehabilitation equipment and medical devices. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a plunger-type check valve that is simple in structure, small in size, easy to process and use, low in cost, safe and reliable, and has a wider range of applications.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A plunger-type one-way valve includes: a housing, a valve body, and a valve core. The housing is a circular cylindrical structure with multiple flow guide holes at the bottom. The valve body is semi-embedded inside the housing. The front end of the housing and the valve body provides space for the valve core to move. The top end of the valve body is provided with multiple valve flaps. The valve core is a T-shaped structure and is movably disposed at the front end of the valve body. The valve core is slidably connected to the valve flaps. The top surface of the valve core matches the inner bottom surface of the housing.

[0008] In the above structure, the inner bottom surface of the outer shell is a circular plane, and a plurality of the flow guide holes are arrayed on the circular plane. A circular groove is embedded in the outer bottom surface of the outer shell, and the plurality of flow guide holes are located inside the circular groove. The circular groove is coaxially arranged with the circular plane.

[0009] In the above structure, multiple flow guide holes are provided through the bottom surface, the bottom outer side of the outer shell is provided with rounded corners, and the outer shell and valve body are both made of plastic material.

[0010] In the above structure, the lower part of the plurality of valve discs is integrally provided with a cylindrical body, and the outer circumferential rear end of the cylindrical body is provided with an annular flange, which matches the outer shell.

[0011] In the above structure, multiple valve discs are symmetrically arranged, the outer surfaces of multiple valve discs are all fox-shaped smooth transition surfaces, and the top surfaces of multiple valve discs are all flat surfaces.

[0012] In the above structure, the valve core includes a valve plug and a guide post. The valve plug is a circular planar structure, and the guide post is a circular cylindrical structure. The valve plug and the guide post are integrally formed. The end of the guide post is provided with a tapered mounting part. The valve plug and the guide post are coaxially arranged.

[0013] In the above structure, the inner surfaces of the plurality of valve discs are smooth surfaces, and the inner surfaces of the plurality of valve discs are matched with the guide post.

[0014] In the above structure, the valve core is made of soft plastic material.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention features a valve body, valve core, and multiple flow guide holes at the bottom of the outer casing. The valve body and outer casing are made of rigid plastic, while the valve core is made of flexible plastic. An internal space for the valve core is located at the bottom of the outer casing. Automatic control and backflow prevention are achieved by directing the flow of liquid, resulting in improved reliability. This invention has a simple structure, small size, is easy to process and use, has low cost, is safe and reliable, and has a wider range of applications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the plunger-type check valve of this utility model;

[0018] Figure 2 This is a front view of an embodiment of the plunger-type check valve of this utility model;

[0019] Figure 3 This is one of the cross-sectional views of an embodiment of the plunger-type check valve of this utility model;

[0020] Figure 4 This is a second cross-sectional view of an embodiment of the plunger-type check valve of this utility model;

[0021] Figure 5 This is a schematic diagram of the valve body in an embodiment of the plunger-type check valve of this utility model;

[0022] Figure 6 This is a schematic diagram of the valve core structure in an embodiment of the plunger-type check valve of this utility model;

[0023] Figure 7 This is an exploded view of the valve core structure in an embodiment of the plunger-type check valve of this utility model.

[0024] In the diagram, 1-outer shell, 2-valve body, 3-valve core, 4-valve disc, 5-guide hole, 6-circular groove. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 1-7 As shown, a plunger-type one-way valve includes: a housing 1, a valve body 2, and a valve core 3. The housing 1 is a circular cylindrical structure with multiple flow guide holes 5 at the bottom. The valve body 2 is semi-embedded inside the housing 1. The front end of the housing 1 and the valve body 2 provides space for the valve core 3 to move. The top of the valve body 2 is provided with multiple valve discs 4. The valve core 3 is a structure with a "T" shaped cross-section. The valve core 3 is movably disposed at the front end of the valve body 2. The valve core 3 is slidably connected to the valve discs 4. The top surface of the valve core 3 matches the inner bottom surface of the housing 1.

[0027] Specifically, in this embodiment, the present invention is smaller in size, simpler in structure, can be manufactured in various specifications, and is more convenient to process, manufacture, and assemble. It can adapt to thinner tubes, has stronger adaptability, and a wider range of applications, providing more options for rehabilitation equipment.

[0028] Specifically, in this embodiment, the valve disc 4 is used to position and guide the valve core. The number of valve discs 4 can be determined according to the structure of the outer shell 1 and the valve body 2 to ensure that the valve core 3 can move freely.

[0029] In a preferred embodiment of the present invention, the inner bottom surface of the outer shell 1 is a circular plane, and a plurality of flow guide holes 5 are arrayed on the circular plane. A circular groove is embedded in the outer bottom surface of the outer shell 1, and the plurality of flow guide holes 5 are located inside the circular groove 6. The circular groove 6 is coaxially arranged with the circular plane.

[0030] In a preferred embodiment of this utility model, a plurality of guide holes 5 are provided through the bottom surface, and the bottom outer side of the outer shell 1 is provided with rounded corners. Both the outer shell 1 and the valve body 2 are made of plastic material.

[0031] Specifically, in this embodiment, both the outer shell 1 and the valve body 2 are made of rigid plastic material.

[0032] In a preferred embodiment of the present invention, the lower part of the plurality of valve discs 4 is integrally provided with a cylindrical body, and the outer circumferential rear end of the cylindrical body is provided with an annular flange, which matches the outer shell 1.

[0033] In a preferred embodiment of this utility model, multiple valve discs 4 are symmetrically arranged, and the outer surfaces of the multiple valve discs 4 are all fox-shaped smooth transition surfaces. The transition surface space facilitates smooth fluid flow, and the top surfaces of the multiple valve discs 4 are all flat.

[0034] In a preferred embodiment of this utility model, the valve core 3 includes a valve plug and a guide post. The valve plug is a circular plane, and the guide post is a circular cylindrical structure. The valve plug and the guide post are integrally formed. The end of the guide post is provided with a tapered mounting part. The valve plug and the guide post are coaxially arranged.

[0035] In a preferred embodiment of this utility model, the inner surfaces of the plurality of valve discs 4 are smooth surfaces, and the inner surfaces of the plurality of valve discs 4 are matched with the guide posts.

[0036] Specifically, in this embodiment, the multiple valve discs 4 are constructed as a clamp-like structure, and the guide post is installed in the multiple valve discs 4.

[0037] In a preferred embodiment of this utility model, the valve core 3 is made of soft plastic material.

[0038] Specifically, in this embodiment, the valve body 1 is made of rigid plastic material, and the valve core 2 is made of silicone.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A plunger-type check valve, characterized in that, include: The valve consists of an outer shell, a valve body, and a valve core. The outer shell is a cylindrical structure with multiple flow guide holes at the bottom. The valve body is semi-embedded inside the outer shell. The front end of the outer shell and the valve body provides space for the valve core to move. The top of the valve body has multiple valve flaps. The valve core is a T-shaped structure and is movably disposed at the front end of the valve body. The valve core and the valve flaps are slidably connected. The top surface of the valve core matches the inner bottom surface of the outer shell.

2. The plunger-type check valve according to claim 1, characterized in that, The inner bottom surface of the outer shell is a circular plane, and a plurality of the flow guide holes are arrayed on the circular plane. A circular groove is embedded in the outer bottom surface of the outer shell, and the plurality of flow guide holes are located inside the circular groove. The circular groove is coaxially arranged with the circular plane.

3. The plunger-type check valve according to claim 2, characterized in that, Multiple flow guide holes are provided through the bottom surface, and the bottom outer side of the housing is provided with rounded corners. Both the housing and the valve body are made of plastic material.

4. The plunger-type check valve according to claim 1, characterized in that, The lower part of the multiple valve discs is integrally provided with a cylindrical body, and the outer rear end of the cylindrical body is provided with an annular flange, which matches the outer shell.

5. The plunger-type check valve according to claim 1, characterized in that, The multiple valve discs are symmetrically arranged, the outer surfaces of the multiple valve discs are all fox-shaped smooth transition surfaces, and the top surfaces of the multiple valve discs are all flat surfaces.

6. The plunger-type check valve according to claim 2, characterized in that, The valve core includes a valve plug and a guide post. The valve plug is a circular planar structure, and the guide post is a circular cylindrical structure. The valve plug and the guide post are integrally formed. The end of the guide post is provided with a tapered mounting part. The valve plug and the guide post are coaxially arranged.

7. The plunger-type check valve according to claim 6, characterized in that, The inner surfaces of the multiple valve discs are smooth, and the inner surfaces of the multiple valve discs are matched with the guide post.

8. The plunger-type check valve according to claim 1, characterized in that, The valve core is made of soft plastic material.

Images