A one-way valve

Abstract

The application relates to the technical field of one-way valves, and provides a one-way valve which comprises a shell composed of an upper cover and a lower cover, the upper cover and the lower cover are respectively provided with an inlet and an outlet at the ends away from each other, and the one-way valve is characterized in that the one-way valve further comprises a sealing piece, a plug and a spring which are arranged between the upper cover and the lower cover; a through groove is arranged at the end of the lower cover away from the upper cover, the outlet is arranged in isolation from the through groove, the plug is arranged in the through groove in an adjustable installation position, and the two ends of the spring are respectively in elastic abutment with the sealing piece and the plug. Based on the above, the position of the plug is adjusted when the one-way valve is assembled, and one-way valves with different water inlet rated pressures can be produced.

Description

Technical Field

[0001] This application relates to the field of check valves, and more particularly to a check valve. Background Technology

[0002] A check valve is a common valve device in the field of liquid control. Its core function is to allow liquid to flow in one direction while automatically preventing backflow.

[0003] In related technologies, a one-way valve includes a housing, a seal, and a spring. The housing consists of a fixedly connected upper cover and a lower cover. The upper cover has an inlet at the end away from the lower cover, and the lower cover has an outlet at the end away from the upper cover. The seal and the spring are installed between the upper cover and the lower cover. The upper cover and the lower cover cooperate to compress the spring to a certain extent, so that the seal, driven by the spring, abuts against the inlet at the upper cover position to block the inlet, thereby realizing the one-way flow of the one-way valve.

[0004] However, in actual production, when the components are assembled after being manufactured separately, the seal separates from the inlet and compresses the spring when the inlet reaches the rated water pressure. The aforementioned check valve then conducts one-way traffic. If check valves suitable for different pressures are required, corresponding lower covers must be manufactured separately to meet the requirements of different spring compression amounts, which is costly. Therefore, improvements are needed. Utility Model Content

[0005] In order to reduce the cost of check valves with different pressure requirements, this application provides a check valve.

[0006] The one-way valve provided in this application adopts the following technical solution: A one-way valve includes a housing consisting of an upper cover and a lower cover. The upper cover and the lower cover have an inlet and an outlet at their ends, respectively. The valve also includes a seal, a plug, and a spring disposed between the upper cover and the lower cover. A through groove is provided at the end of the lower cover away from the upper cover. The outlet is isolated from the through groove. The plug is installed in an adjustable position within the through groove. The two ends of the spring elastically abut against the seal and the plug, respectively.

[0007] By adopting the above technical solution, during the assembly of the check valve, the plug is pre-pressed into the through groove, and the spring and seal are installed into the assembled housing. The inlet is connected to the rated air pressure, and the plug is slowly pushed towards the upper cover until the inlet is sealed and then stopped. In this way, the effect of controlling different rated pressures of the check valve can be achieved, so that there is no need to develop lower covers with different requirements, which greatly reduces costs.

[0008] Preferably, the plug and the through groove are interference-fitted, and the lower cover is chamfered at both ends of the through groove.

[0009] By adopting the above technical solution and using an interference fit, the installation position of the plug will be fixed after it is installed in the through groove, ensuring the safe use of the one-way valve. The chamfered structure makes it easier for the plug to be pressed into the through groove.

[0010] Preferably, the plug is spherical and the cross-section of the through groove is circular.

[0011] By adopting the above technical solution and setting the plug as a spherical body, it is easier to press the plug into the through groove.

[0012] Preferably, the plug is a threaded part, and the plug is threadedly connected to the inner wall of the through groove.

[0013] By adopting the above technical solution, the position of the plug can be adjusted by adjusting the position of the threaded component with a screw.

[0014] Preferably, the end of the seal away from the inlet has a mounting groove, and one end of the spring is confined within the mounting groove.

[0015] By adopting the above technical solution, the mounting groove can accommodate the end of the spring near the inlet, thereby improving the connection stability between the seal and the spring.

[0016] Preferably, the lower cover includes an inner ring, an outer ring, and a connecting portion. The outlet is located between the inner ring and the outer ring. The connecting portion is connected to the outer wall of the inner ring and the inner wall of the outer ring. When the one-way valve is turned on, the end of the seal away from the upper cover can abut against the end face of the inner ring near the inlet.

[0017] By adopting the above technical solution, when the seal is pushed open, the end of the seal away from the top cover can abut against the end face of the inner ring near the inlet, which can protect the spring and make it less likely for the spring to come into contact with the liquid inside the one-way valve, thus improving the safety of the spring.

[0018] Preferably, the end of the seal away from the inlet is provided with a retaining ring along its circumference. When the seal moves toward the lower cover, the portion of the retaining ring away from the inlet can extend between the outer ring and the inner ring.

[0019] By adopting the above technical solution, when the liquid in the one-way valve flows in one direction, the retaining ring can play a guiding role, directly guiding the liquid to the space between the inner and outer rings, making it less likely for the liquid to come into contact with the spring, and further improving the safety of the spring.

[0020] Preferably, the sealing element includes a valve seat and a sealing gasket, wherein the end of the valve seat away from the inlet abuts against the spring, and the sealing gasket is installed on the end of the valve seat near the inlet and cooperates with the inlet.

[0021] By adopting the above technical solution, a sealing element is formed by a valve seat and a sealing gasket. The valve seat can be made of hard materials such as plastic to ensure the connection stability between the valve seat and the spring. The sealing gasket can be made of elastic materials such as rubber or silicone to ensure the sealing effect.

[0022] Preferably, the inner side of the upper cover is provided with a plurality of limiting ribs spaced apart along its circumference, and the valve seat is limited between the plurality of limiting ribs.

[0023] By adopting the above technical solution and setting multiple limiting ribs, the installation position and movement direction of the valve seat can be limited to ensure the stability of the valve seat sliding. At the same time, a larger flow channel can be formed between any two adjacent limiting ribs, making the unidirectional flow of liquid smoother and improving the overall structural strength of the top cover.

[0024] Preferably, the upper cover is provided with a tail height that is connected to the inlet, and the sealing gasket is in close contact with the tail height when sealing the inlet.

[0025] By adopting the above technical solution, the contact area between the sealing gasket and the inlet direction of the top cover can be reduced by utilizing the tail height, thereby achieving a better sealing effect.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. When assembling the check valve, pre-press the plug into the through groove, and install the spring and seal into the assembled housing. Connect the inlet to the rated air pressure, and slowly push the plug toward the upper cover until the inlet is sealed and then stop. This can achieve the effect of controlling different rated pressures of the check valve of this structure, so that there is no need to develop lower covers with different requirements, which greatly reduces costs. 2. By using an interference fit, the installation position of the plug will be fixed after it is installed in the through groove, ensuring the safe use of the one-way valve. The chamfered structure makes it easier for the plug to be pressed into the through groove. 3. The sealing element is composed of a valve seat and a sealing gasket. The valve seat can be made of hard materials such as plastic to ensure the stability of the connection between the valve seat and the spring. The sealing gasket can be made of elastic materials such as rubber or silicone to ensure the sealing effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the one-way valve in the embodiments of this application; Figure 2 This is a schematic diagram of one state cross-sectional structure of the check valve in one embodiment of this application; Figure 3 This is a schematic diagram of another state cross-sectional structure of the one-way valve in the embodiments of this application.

[0028] Reference numerals: 1. Shell; 11. Top cover; 111. Inlet; 112. Limiting rib; 113. Tail height; 12. Bottom cover; 121. Outlet; 122. Through groove; 123. Inner ring; 124. Outer ring; 125. Connecting part; 2. Seal; 21. Mounting groove; 22. Retaining ring; 23. Valve seat; 24. Sealing gasket; 3. Plug; 4. Spring. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0030] This application discloses a one-way valve.

[0031] Reference Figure 1 and Figure 2 The one-way valve includes a housing 1 consisting of an upper cover 11 and a lower cover 12, a seal 2, a plug 3, and a spring 4. The upper cover 11 is located above the lower cover 12. The upper end of the upper cover 11 has an inlet 111, and the lower end of the lower cover 12 has an outlet 121 that selectively communicates with the inlet 111. The lower cover 12 has a through groove 122, which is isolated from the outlet 121.

[0032] The seal 2, plug 3 and spring 4 are located between the upper cover 11 and the lower cover 12, and the plug 3 is installed in the through groove 122. The position of the plug 3 can be adjusted. The upper end of the spring 4 elastically abuts against the seal 2, and the lower end of the spring 4 elastically abuts against the plug 3, so as to drive the seal 2 to move upward so that the seal 2 abuts against the lower end of the inlet 111.

[0033] Reference Figure 2 and Figure 3 When assembling the check valve, the plug 3 is pre-pressed into the through groove 122, and the spring 4 and the seal 2 are installed into the assembled housing 1. The inlet 111 is connected to the rated air pressure, and the plug 3 is slowly pushed towards the upper cover 11 until the inlet 111 is sealed and then stopped. In this way, the effect of controlling different rated pressures of the check valve can be achieved, so that there is no need to develop lower covers 12 with different requirements, which greatly reduces costs.

[0034] In some embodiments, the plug 3 and the through groove 122 are interference-fitted, so that after the plug 3 is installed in the through groove 122, the installation position of the plug 3 will be fixed, ensuring the safe use of the one-way valve. At the same time, the lower cover 12 is chamfered at both ends of the through groove 122 to facilitate the plug 3 being pressed into the through groove 122.

[0035] In some embodiments, the plug 3 is configured as a spherical body, and the cross-section of the through groove 122 is circular, which makes it easier for the plug 3 to be pressed into the through groove 122.

[0036] In some embodiments, the plug 3 is configured as a threaded part, and the plug 3 is threadedly connected to the inner wall of the through groove 122. When this method is adopted, the installation position of the plug 3 can be adjusted by adjusting the position of the threaded part with a screw.

[0037] In some embodiments, the lower end of the seal 2 has a mounting groove 21, and the upper end of the spring 4 is limited in the mounting groove 21. The mounting groove 21 can accommodate the end of the spring 4 near the inlet 111, thereby improving the connection stability between the seal 2 and the spring 4.

[0038] In some embodiments, the lower cover 12 includes an inner ring 123, an outer ring 124, and a connecting portion 125. The outlet 121 is located between the inner ring 123 and the outer ring 124. The connecting portion 125 connects to the outer wall of the inner ring 123 and the inner wall of the outer ring 124. The end of the seal 2 away from the upper cover 11 can abut against the upper end face of the inner ring 123. When the seal 2 is opened, the end of the seal 2 away from the upper cover 11 can abut against the end face of the inner ring 123 near the inlet 111, which can protect the spring 4, making it less likely for the spring 4 to come into contact with the liquid inside the one-way valve, thus improving the safety of the spring 4.

[0039] In some embodiments, the lower end of the seal 2 is provided with a retaining ring 22 along its circumference. When the seal 2 moves toward the lower cover 12, the portion of the retaining ring 22 away from the inlet 111 can extend between the outer ring 124 and the inner ring 123. When the liquid in the one-way valve flows in one direction, the retaining ring 22 can act as a guide, directly guiding the liquid to the space between the inner ring 123 and the outer ring 124, making it less likely for the liquid to come into contact with the spring 4, thereby further improving the safety of the spring 4.

[0040] In some embodiments, the seal 2 includes a valve seat 23 and a sealing gasket 24. A mounting groove 21 is located at the lower end of the valve seat 23, and the sealing gasket 24 is mounted on the upper end of the valve seat 23, abutting against the inlet 111. The seal 2, composed of the valve seat 23 and the sealing gasket 24, ensures the stability of the connection between the valve seat 23 and the spring 4 by using a rigid material such as plastic as the valve seat 23, and by using an elastic material such as rubber or silicone as the sealing gasket to ensure a good seal.

[0041] In some embodiments, a plurality of limiting ribs 112 protrude from the inner side of the upper cover 11. These limiting ribs 112 are evenly spaced along the circumference of the upper cover 11 to improve the overall structural strength of the upper cover 11. The valve seat 23 is positioned between the multiple limiting ribs 112 to achieve a sliding connection between the valve seat 23 and the upper cover 11, ensuring the stability of the valve seat 23's sliding movement. Liquid passes between two adjacent limiting ribs 112 to ensure normal liquid flow.

[0042] In some embodiments, the upper cover 11 has a protruding tail height 113 that is connected to the inlet 111. When the sealing gasket 24 seals the inlet 111, it abuts against the tail height 113, which can reduce the contact area between the sealing gasket 24 and the upper cover 11 in the direction of the inlet 111, thereby making the sealing effect better.

[0043] The implementation principle of this embodiment is as follows: When assembling the one-way valve, the plug 3 is pre-pressed into the through groove 122, and the spring 4 and the sealing element 2 are installed into the assembled housing 1. The inlet 111 is connected to the rated air pressure, and the plug 3 is slowly pushed towards the upper cover 11 until the inlet 111 is sealed and then stopped. In this way, the effect of controlling different rated pressures of the one-way valve of this structure can be achieved, so that there is no need to develop lower covers 12 with different requirements, which greatly reduces costs.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A one-way valve, comprising a housing (1) consisting of an upper cover (11) and a lower cover (12), wherein the upper cover (11) and the lower cover (12) have an inlet (111) and an outlet (121) respectively at their ends away from each other, characterized in that, It also includes a sealing element (2), a plug (3) and a spring (4) disposed between the upper cover (11) and the lower cover (12); a through groove (122) is provided at one end of the lower cover (12) away from the upper cover (11), the outlet (121) is isolated from the through groove (122), the plug (3) is installed in the through groove (122) with adjustable position, and the two ends of the spring (4) elastically abut against the sealing element (2) and the plug (3) respectively.

2. A one-way valve according to claim 1, characterized in that, The plug (3) is interference-fitted with the through groove (122), and the lower cover (12) is chamfered at both ends of the through groove (122).

3. A one-way valve according to claim 2, characterized in that, The plug (3) is configured as a spherical body, and the cross-section of the through groove (122) is circular.

4. A one-way valve according to claim 1, characterized in that, The plug (3) is configured as a threaded part, and the plug (3) is threadedly connected to the inner wall of the through groove (122).

5. A one-way valve according to claim 1, characterized in that, The seal (2) has a mounting groove (21) at one end away from the inlet (111), and one end of the spring (4) is confined in the mounting groove (21).

6. A one-way valve according to claim 1, characterized in that, The lower cover (12) includes an inner ring (123), an outer ring (124) and a connecting part (125). The outlet (121) is located between the inner ring (123) and the outer ring (124). The connecting part (125) is connected to the outer wall of the inner ring (123) and the inner wall of the outer ring (124). When the one-way valve is turned on, the end of the seal (2) away from the upper cover (11) can abut against the end face of the inner ring (123) near the inlet (111).

7. A one-way valve according to claim 6, characterized in that, The sealing element (2) has a retaining ring (22) on its circumference at one end away from the inlet (111). When the sealing element (2) moves toward the lower cover (12), the part of the retaining ring (22) away from the inlet (111) can extend between the outer ring (124) and the inner ring (123).

8. A one-way valve according to claim 1, characterized in that, The sealing element (2) includes a valve seat (23) and a sealing gasket (24). The valve seat (23) is located away from the inlet (111) and abuts against the spring (4). The sealing gasket (24) is installed on the valve seat (23) near the inlet (111) and cooperates with the inlet (111).

9. A one-way valve according to claim 8, characterized in that, The inner side of the cover (11) is provided with a plurality of limiting ribs (112) spaced apart along its circumference, and the valve seat (23) is limited between the plurality of the limiting ribs (112).

10. A one-way valve according to claim 8, characterized in that, The upper cover (11) is provided with a tail height (113) connected to the inlet (111), and the sealing gasket (24) abuts against the tail height (113) when sealing the inlet (111).

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