Liquid one-way valve

Abstract

The liquid one-way valve comprises a valve bonnet, a valve body and a sealing ring, the valve bonnet is connected with the valve body, the sealing ring is connected to the valve bonnet in a sleeving mode, and the sealing ring is located between the valve bonnet and the valve body; wherein the valve bonnet is provided with a groove, at least part of the sealing ring is located in the groove, and the size of the groove is matched with the size of the sealing ring. According to the liquid one-way valve, when a user manually tightens the valve bonnet in place, the deformation amount of the valve bonnet is controlled, and when the maximum deformation amount is achieved, the groove can limit the extrusion degree of the sealing ring, so that damage caused by excessive deformation of the sealing ring is avoided, the sealing effect is improved, the damage risk is reduced, and the service life of the liquid one-way valve is prolonged. The use efficiency is improved; the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of valve technology, specifically to a liquid check valve. Background Technology

[0002] A liquid check valve is a valve used to control the direction of liquid flow. Its main function is to allow liquid to flow in one direction while preventing it from flowing in the opposite direction. Check valves are widely used in various hydraulic and fluid systems to prevent liquid backflow, thereby protecting the normal operation of equipment and systems.

[0003] In existing technologies, the sealing ring is fitted onto the valve body. When the user tightens the valve cap, the sealing ring is easily squeezed and damaged when the maximum deformation is reached, resulting in damage, reduced efficiency, poor sealing effect, and high cost.

[0004] Therefore, the structure of the existing check valve has room for further improvement. Utility Model Content

[0005] In view of this, and in response to the technical problems of the sealing ring of the existing one-way valve being easily crushed and damaged, resulting in poor sealing effect and low efficiency, this application provides a liquid one-way valve. By changing the structure of the one-way valve, it can effectively prevent the sealing ring from being excessively squeezed when tightening the valve cap, thereby improving the sealing effect, reducing the risk of damage, increasing efficiency and reducing costs.

[0006] To achieve the above objectives, this application provides the following technical solution: a liquid check valve, comprising a valve cap, a valve body, and a sealing ring, wherein the valve cap is connected to the valve body, the sealing ring is sleeved on the valve cap, and the sealing ring is located between the valve cap and the valve body;

[0007] The valve cap has a groove, and the sealing ring is at least partially located within the groove, the size of which is adapted to the size of the sealing ring.

[0008] Compared to existing technologies, the valve cap features a groove, within which the sealing ring is at least partially located. This provides a fixed position for the sealing ring, ensuring it does not shift or deform during operation, effectively improving the sealing performance of the one-way valve. Furthermore, when the user manually tightens the valve cap, the deformation of the sealing ring is controlled during the tightening process. At maximum deformation, the groove limits the compression of the sealing ring, preventing damage due to excessive deformation. This improves the sealing effect, reduces the risk of damage, increases efficiency, and lowers costs.

[0009] Furthermore, the valve cap is provided with a connecting part, and the valve body is provided with a mating part. The connecting part and the mating part mate to achieve the connection between the valve cap and the valve body. The top of the mating part fits against the bottom of the sealing ring.

[0010] The connecting part is threaded, the mating part is threaded hole, and the valve cap is threadedly connected to the valve body.

[0011] In some embodiments of this application, a rotating shaft and a valve cover are also included; the rotating shaft is at least partially connected to the inner wall of the valve body and at least partially connected to the valve cover, and the rotating shaft is rotatable relative to the valve body;

[0012] The rotating shaft and the valve cover are detachably connected.

[0013] Furthermore, the valve cover includes a first connecting part, a second connecting part, and a third connecting part, wherein the first connecting part is connected to the third connecting part through the second connecting part, and the rotating shaft is connected to the third connecting part;

[0014] The diameter of the second connecting part gradually decreases from the base connected to the first connecting part toward the third connecting part.

[0015] In some embodiments of this application, the valve body includes at least one first inlet, one second inlet, and one outlet. The first inlet is located at one end of the valve body facing the valve cover, and the second inlet is correspondingly arranged with the outlet.

[0016] Furthermore, the inner wall of the valve body is provided with an annular protrusion, the valve cover is in close contact with the annular protrusion, and the annular protrusion is located at one end of the valve cover near the first water inlet;

[0017] The annular protrusion has a through hole for liquid to pass through, the outer diameter of the through hole is smaller than the outer diameter of the valve cover, and the annular protrusion has an arc-shaped structure.

[0018] Furthermore, the rotating shaft includes a rotating component, a connecting component, and a support rod. The rotating component is sleeved on the support rod, and the end of the support rod is connected to the inner wall of the valve body. The center of gravity of the support rod is offset from the vertical plane of the center of the valve body.

[0019] One end of the connector is fixedly connected to the rotating component, and the other end is detachably connected to the valve cover. The connector is provided with a bend.

[0020] Furthermore, the valve body is provided with a support column, and the support column is provided with a positioning hole for the support rod to be inserted. The positioning hole cooperates with the support rod to realize the connection between the rotating shaft and the valve body.

[0021] There are two support columns, which are symmetrically arranged along the center line of the valve body.

[0022] Furthermore, the rotating shaft also includes a locking component, and the valve body is provided with an insertion hole. The locking component is connected to the support column through the insertion hole, and the insertion hole and the positioning hole are arranged on the same rotating shaft.

[0023] There is a gap between the locking member and the support rod.

[0024] Furthermore, the valve cover is provided with a support member, the valve cover is connected to the rotating shaft through the support member, and the connecting member is sleeved on the support member;

[0025] The support member has a flared end away from the valve cover, and the support member is fixed to the connector by a nut, with the nut being threadedly connected to the support member.

[0026] The liquid check valve of this application has at least the following technical advantages:

[0027] 1. By setting a connecting part and a mating part, the connecting part is set as a thread and the mating part is set as a threaded hole. The valve cap and the valve body are connected by a thread. The threaded connection ensures the connection strength between the valve cap and the valve body, which can withstand liquid pressure and vibration, reduce the risk of loosening, and the threaded connection makes the installation and disassembly of the valve cap and the valve body more convenient. Users can complete the connection or separation simply by rotating, saving time and labor costs.

[0028] 2. By setting up a support column, the positioning holes on the support column provide a precise insertion position for the support rod, ensuring that the support rod remains stable during operation and avoiding inflexible operation or failure due to displacement. The support column can effectively prevent the support rod from accidentally falling off in high pressure or vibration environments, ensuring the safety and reliability of the valve. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of a liquid check valve provided in an embodiment of this application;

[0030] Figure 2 This is an exploded structural diagram of a liquid check valve provided in one embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the structure of a rotating shaft provided in one embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the elevation structure of a liquid check valve provided in an embodiment of this application;

[0033] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of AA;

[0034] Figure 6 This is a schematic diagram of the structure of a valve cover provided in one embodiment of this application.

[0035] Reference numerals: 1. Valve cap; 2. Valve body; 3. Sealing ring; 4. Shaft; 5. Valve cover;

[0036] 11. Groove; 12. Connecting part; 21. Fitting part; 22. First water inlet; 23. Second water inlet; 24. Water outlet; 26. Support column; 27. Insertion hole; 28. Annular protrusion;

[0037] 41. Rotating component; 42. Connecting component; 43. Support rod; 44. Locking component; 51. Support component; 52. First connecting part; 53. Second connecting part; 54. Third connecting part. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0039] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0040] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, the above terms should not be construed as limitations on this application.

[0041] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 6 illustrate.

[0042] This embodiment provides a liquid check valve, which is applied in the field of valve technology. Specifically, as shown in... Figures 1 to 6As shown, the valve includes a valve cap 1, a valve body 2, and a sealing ring 3. The valve cap 1 is connected to the valve body 2, and the sealing ring 3 is fitted onto the valve cap 1, located between the valve cap 1 and the valve body 2. In this embodiment, the valve cap 1 has a groove 11, and the sealing ring 3 is at least partially located within the groove 11. When the user manually tightens the valve cap 1, the deformation of the valve cap 1 is controlled. When the maximum deformation is reached, the groove 11 can limit the degree of compression of the sealing ring 3, thereby preventing the sealing ring 3 from breaking due to excessive deformation, thus improving the sealing effect, reducing the risk of damage, improving efficiency, and reducing costs. The cooperation between the groove 11 and the sealing ring 3 ensures that the valve can effectively prevent liquid leakage when closed. The size of the groove 11 is adapted to the size of the sealing ring 3, ensuring that the sealing ring 3 can fit tightly within the groove 11, allowing the sealing ring 3 to maintain a good working condition when the valve is working, further enhancing the valve's sealing effect.

[0043] Specifically, such as Figure 2 As shown, the valve cap 1 has a connecting part 12, and the valve body 2 has a mating part 21. The connecting part 12 and the mating part 21 mate to connect the valve cap 1 and the valve body 2. The top of the mating part 21 fits against the bottom of the sealing ring 3 to ensure an effective seal when the valve is closed, preventing liquid leakage and improving the valve's sealing performance. The connecting part 12 is threaded, and the mating part 21 is a threaded hole. The threaded connection between the valve cap 1 and the valve body 2 ensures the connection strength between them, enabling them to withstand liquid pressure and vibration, reducing the risk of loosening. Furthermore, the threaded connection makes the installation and disassembly of the valve cap 1 and the valve body 2 more convenient; users can simply rotate them to connect or disconnect, saving time and labor costs. The outer diameter of the valve cap 1 is R1, and the outer diameter of the connecting part 12 is R2. R1 > R2, which means that the valve cap 1 has a larger contact area than the connecting part 12, which helps to provide better sealing performance. In addition, the valve cap 1 can withstand greater force, enhance unidirectional strength, and reduce the entry of other impurities into the groove 11, which would affect the sealing effect between the groove 11 and the sealing ring 3.

[0044] In this embodiment, as Figures 2 to 6 As shown, the valve body 2 includes at least one first inlet 22, a second inlet 23 and an outlet 24. The first inlet 22 is located at the end of the valve body 2 facing the valve cover 5. The second inlet 23 is correspondingly arranged with the outlet 24. The first inlet 22 is arranged in the mating part 21.

[0045] Furthermore, such as Figure 2As shown, the valve also includes a rotating shaft 4, a valve cover 5, and an annular protrusion 28 on the inner wall of the valve body 2. The annular protrusion 28 has an arc-shaped structure. The rotating shaft 4 is at least partially connected to the inner wall of the valve body 2 and at least partially connected to the valve cover 5. The rotating shaft 4 can rotate relative to the valve body 2. The valve cover 5 is close to the annular protrusion 28, which is located at the end of the valve cover 5 near the first inlet 22. The rotating shaft 4 and the valve cover 5 are detachably connected. The arc-shaped structure can effectively reduce the dispersion of liquid pressure, reduce stress concentration, enhance the durability of the valve cover 5, and extend the service life of the valve cover 5. When impurities appear in the liquid, they are prone to clogging between the valve cover 5 and the rotating shaft 4. Therefore, the annular protrusion 28 with its arc-shaped structure can effectively guide the liquid flow, reduce the accumulation of impurities between the valve cover 5 and the rotating shaft 4, and improve the sealing effect of the one-way valve. The annular protrusion 28 has a through hole for liquid to pass through. The outer diameter of the through hole is smaller than the outer diameter of the valve cover 5, which can effectively ensure that the valve cover 5 completely covers the through hole and prevent liquid backflow. When water enters through the second inlet 23, the liquid passes through the through hole. When the liquid pressure reaches a certain value, the valve cover 5 will open towards the side away from the annular protrusion 28. When the liquid pressure decreases or flows in the reverse direction, the valve cover 5 will close towards the side of the annular protrusion 28, thus closing the valve. This adjustment method allows the valve to work under different operating conditions.

[0046] Furthermore, such as Figure 6 As shown, the valve cover 5 includes a first connecting part 52, a second connecting part 53, and a third connecting part 54. The outer surface of the first connecting part 52 is flat, the outer surface of the second connecting part 53 is arc-shaped, and the outer surface of the third connecting part 54 is flat. The first connecting part 52 is connected to the third connecting part 54 through the second connecting part 53, and the rotating shaft 4 is connected to the third connecting part 54. The diameter of the second connecting part 53 gradually decreases from the base connected to the first connecting part 52 toward the third connecting part 54, gradually decreasing along the curve until it reaches the edge where it connects with the third connecting part 54. This can effectively reduce the resistance of water flow inside the valve body 2, making the water flow smoother, reducing energy loss, and more evenly distributing the force when the water flows into the third connecting part 54, avoiding excessively fast or slow local flow rates, and improving the regulating performance of the valve. The diameter of the first connecting part 52 is R1, the diameter of the second connecting part 53 is R2, and the diameter of the third connecting part 54 is R3, where R1 > R2 > R3. This allows the valve to control the flow more precisely when adjusting the flow rate, adapting to the flow requirements under different working conditions and improving the valve's regulating performance.

[0047] Furthermore, such as Figure 3As shown, the rotating shaft 4 includes a rotating component 41, a connecting component 42, and a support rod 43. The rotating component 41 is sleeved on the support rod 43, indicating that the rotating component 41 can rotate around the support rod 43. The end of the support rod 43 is connected to the inner wall of the valve body 2. One end of the connecting component 42 is fixedly connected to the rotating component 41, and the other end of the connecting component 42 is detachably connected to the valve cover 5. The connecting component 42 has a bend, and the bend design enhances the strength of the connecting component 42, allowing the connecting component 42 to have a certain elastic deformation when subjected to pressure, thereby absorbing part of the impact force and further improving the durability of the rotating shaft 4. This allows the rotating shaft 4 to achieve a flexible range of motion when rotating, making the rotation of the rotating shaft 4 more stable. The support rod 43 is eccentrically positioned, with its center of gravity offset from the vertical plane of the valve body 2. The center of the support rod 43 is aligned with the valve cover 5 and the annular protrusion 28, ensuring that the center of gravity of the connector 42 connected to the valve cover 5 is located at the center of the valve body 2. This helps maintain the balance and stability of the rotating shaft 4, reduces the eccentric torque generated during rotation, and better disperses stress, thus reducing the direct impact of water flow on the valve cover 5 and the rotating shaft 4.

[0048] Furthermore, such as Figure 3 As shown, the valve body 2 is equipped with a support column 26. The support column 26 has a positioning hole for the insertion of the support rod 43. The positioning hole cooperates with the support rod 43 to realize the connection between the rotating shaft 4 and the valve body 2. The positioning hole provides a precise insertion position for the support rod 43, ensuring that the support rod 43 remains stable during operation and avoiding inflexible operation or failure due to displacement. The support column 26 can effectively prevent the support rod 43 from accidentally falling off under high pressure or vibration environment, ensuring the safety and reliability of the valve. There are two support columns 26, which are symmetrically arranged along the center line of the valve body 2. They can evenly distribute the load, enhance the stability of the overall structure of the valve body 2, and reduce deformation or damage caused by uneven force.

[0049] Furthermore, such as Figure 3 As shown, the rotating shaft 4 also includes a locking element 44. The valve body 2 has a socket 27, through which the locking element 44 is connected to the support column 26. The socket 27 and the positioning hole are aligned with the rotating shaft 4 to ensure the rotating shaft 4 remains stable during operation, reducing displacement caused by rotation or vibration and enhancing the overall stability of the valve. Furthermore, the locking element 44 has a gap with the support rod 43, reducing friction, lowering wear, extending the valve's service life, and reducing the frequency of maintenance and replacement.

[0050] Furthermore, such as Figure 5As shown, the valve cover 5 is provided with a support member 51, which has an elliptical structure. The valve cover 5 is connected to the rotating shaft 4 through the support member 51. The connecting member 42 is sleeved on the support member 51, and the support member 51 protrudes towards the connecting member 42. The support member 51 is fixed to the connecting member 42 by a nut, which is threaded to the support member 51, making it easy to disassemble and assemble the connecting member 42 and the valve cover 5, facilitating replacement or maintenance. The end of the support member 51 away from the valve cover 5 has a flared end. Because the valve cover 5 is fixed by a nut, vibration can easily occur during repeated use of the check valve, causing the nut to loosen. By providing the flared end, when the nut shifts towards the valve cover 5, the flared end compresses it, causing the nut to return to its original position, thus effectively preventing the nut from loosening.

[0051] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A liquid check valve, characterized in that, It includes a valve cap (1), a valve body (2) and a sealing ring (3). The valve cap (1) is connected to the valve body (2), and the sealing ring (3) is sleeved on the valve cap (1). The sealing ring (3) is located between the valve cap (1) and the valve body (2). The valve cap (1) is provided with a groove (11), and the sealing ring (3) is at least partially located in the groove (11). The size of the groove (11) is adapted to the size of the sealing ring (3).

2. The liquid check valve according to claim 1, characterized in that, The valve cap (1) is provided with a connecting part (12), and the valve body (2) is provided with a mating part (21). The connecting part (12) and the mating part (21) are mated to realize the connection between the valve cap (1) and the valve body (2). The top of the mating part (21) is in contact with the bottom of the sealing ring (3). The connecting part (12) is threaded, the mating part (21) is threaded, and the valve cap (1) is threaded to the valve body (2).

3. The liquid check valve according to claim 1, characterized in that, It also includes a rotating shaft (4) and a valve cover (5); the rotating shaft (4) is at least partially connected to the inner wall of the valve body (2) and at least partially connected to the valve cover (5), and the rotating shaft (4) is rotatable relative to the valve body (2); The rotating shaft (4) and the valve cover (5) are detachably connected.

4. The liquid check valve according to claim 3, characterized in that, The valve cover (5) includes a first connecting part (52), a second connecting part (53) and a third connecting part (54). The first connecting part (52) is connected to the third connecting part (54) through the second connecting part (53), and the rotating shaft (4) is connected to the third connecting part (54). The diameter of the second connecting part (53) gradually decreases from the base connected to the first connecting part (52) toward the third connecting part (54).

5. The liquid check valve according to claim 3, characterized in that, The valve body (2) includes at least one first inlet (22), a second inlet (23) and an outlet (24). The first inlet (22) is located at one end of the valve body (2) facing the valve cover (5), and the second inlet (23) is correspondingly arranged with the outlet (24).

6. The liquid check valve according to claim 5, characterized in that, The valve body (2) has an annular protrusion (28) on its inner wall. The valve cover (5) is close to the annular protrusion (28). The annular protrusion (28) is located at one end of the valve cover (5) near the first water inlet (22). The annular protrusion (28) is provided with a through hole for liquid to pass through. The outer diameter of the through hole is smaller than the outer diameter of the valve cover (5). The annular protrusion (28) has an arc-shaped structure.

7. The liquid check valve according to claim 4, characterized in that, The rotating shaft (4) includes a rotating component (41), a connecting component (42), and a support rod (43). The rotating component (41) is sleeved on the support rod (43). The end of the support rod (43) is connected to the inner wall of the valve body (2). The center of gravity of the support rod (43) is offset from the center vertical plane of the valve body (2). One end of the connector (42) is fixedly connected to the rotating part (41), and the other end is detachably connected to the valve cover (5). The connector (42) is provided with a bend.

8. The liquid check valve according to claim 7, characterized in that, The valve body (2) is provided with a support column (26), and the support column (26) is provided with a positioning hole for the support rod (43) to be inserted. The positioning hole cooperates with the support rod (43) to realize the connection between the rotating shaft (4) and the valve body (2). There are two support columns (26), and the two support columns (26) are symmetrically arranged along the center line of the valve body (2).

9. The liquid check valve according to claim 8, characterized in that, The rotating shaft (4) also includes a locking member (44), and the valve body (2) is provided with a socket (27). The locking member (44) is connected to the support column (26) through the socket (27). The socket (27) and the positioning hole are set on the same rotating shaft (4). There is a gap between the locking member (44) and the support rod (43).

10. The liquid check valve according to claim 8, characterized in that, The valve cover (5) is provided with a support member (51), the valve cover (5) is connected to the rotating shaft (4) through the support member (51), and the connecting member (42) is sleeved on the support member (51); The support member (51) has a flared end away from the valve cover (5), and the support member (51) is fixed to the connector (42) by a nut, and the nut is threadedly connected to the support member (51).

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