Air check valve for pressure tank of speed regulator

Abstract

The utility model discloses an air check valve for a pressure tank of a speed regulator, which comprises a check valve body, a gulp valve body is arranged at the top end of the check valve body, studs are arranged at the edge of the surface of the gulp valve body at equal intervals, and a first nut is arranged at one end, far away from the gulp valve body, of each stud. Second gaskets are arranged at the contact positions of the studs and the gulp valve body, a deflation valve body is arranged on the outer wall of one side of the gulp valve body, a first valve rod is arranged in the deflation valve body, and one end of the first valve rod extends out of the deflation valve body and is provided with a first hand wheel; a second nut is installed on the outer wall of the first valve rod on the side, away from the deflation valve body, of the first hand wheel, and a threaded sleeve is arranged on the surface of the gulp valve body. According to the air check valve, potential safety hazards existing in the air check valve are eliminated, the safety of the air check valve in use is improved, the sealing performance of the air check valve in use is improved, the overall firmness of the air check valve is guaranteed, and the convenience of the air check valve in maintenance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to an air check valve for a speed regulator pressure tank. Background Art

[0002] The check valve is also commonly known as a one-way valve, non-return valve, or back-pressure valve. This type of gate valve automatically opens and closes by the force generated by the flow of the medium in the pipeline. It is an automatic valve. The function of the check valve is to prevent the medium from flowing back, to prevent the pump and its driving motor from reversing, and to prevent the release of the medium in the container.

[0003] Reference publication number CN203836296U discloses an air check valve, which comprises a valve body, a valve plate closing or opening an air inlet end of the valve body, and a bendable elastic connecting plate, wherein the valve plate is rotatably mounted in the valve body through the elastic connecting plate; the elastic connecting plate comprises a fixing portion and a mounting portion connected to the fixing portion, the elastic connecting plate is mounted on the inner wall of the air inlet end of the valve body with the fixing portion, and one end of the valve plate is mounted on the mounting portion; the valve plate rotates under the air inlet pressure at the air inlet end of the valve body, and The mounting portion is driven to bend relative to the fixed portion to open the air inlet end of the valve body; when the pressure at the air inlet end of the valve body is released and / or the reverse pressure at the air outlet end is applied, the valve plate is elastically reset by the mounting portion and / or rotates under the action of gravity to close the air inlet end of the valve body. The air check valve installs the valve plate in the valve body through an elastic connecting plate to achieve the rotation of the valve plate. Based on the above, although the air check valve can be well applied, it is usually not convenient to carry out air replenishment and air release processing, so that the internal air pressure of the air check valve is prone to be high or low, and there are certain safety hazards. Utility Model Content

[0004] The purpose of the utility model is to provide an air check valve for a speed regulator pressure tank, so as to solve the problem in the above background technology that although the air check valve can be well applied, it is usually not convenient to carry out air replenishment and air release, so that the internal air pressure of the air check valve is prone to be high or low, and there are certain safety hazards.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an air check valve for a speed regulator pressure tank, comprising a check valve body, a gas-inflation valve body is arranged at the top of the check valve body, studs with equal spacing are installed at the edge position of the surface of the gas-inflation valve body, a first nut is arranged at one end of the stud away from the gas-inflation valve body, a second gasket is arranged at the contact position between the stud and the gas-inflation valve body, a gas-release valve body is arranged on the outer wall of one side of the gas-inflation valve body, a first valve stem is arranged inside the gas-release valve body, one end of the first valve stem extends to the outside of the gas-release valve body and is provided with a first hand wheel, a second nut is installed on the outer wall of the first valve stem on the side of the first hand wheel away from the gas-release valve body, a screw sleeve is arranged on the surface of the gas-inflation valve body, a second valve stem is arranged inside the screw sleeve, one end of the second valve stem extends to the outside of the screw sleeve and is provided with a second hand wheel, a pressure cap is arranged on the outer wall of the screw sleeve away from the gas-inflation valve body, and a lock nut is arranged on the outer wall of the pressure cap away from the screw sleeve.

[0006] Preferably, a valve plug is provided at one end of the check valve body, and a rubber pad is provided inside the check valve body below the valve plug, so that the stability between the valve plug and the check valve body is improved by providing the rubber pad.

[0007] Preferably, a first washer is arranged inside the check valve body below the rubber pad, and a screw is installed at the bottom end of the first washer. The first washer is arranged to improve the stability between the screw and the check valve body.

[0008] Preferably, a spring is installed inside the check valve body above the valve plug, and a fourth gasket is provided at the connection position between the check valve body and the air supply valve body. The fourth gasket is provided to improve the firmness between the check valve body and the air supply valve body.

[0009] Preferably, a third gasket is provided at the connection position between the screw sleeve and the air supply valve body, and an O-ring is provided inside the air supply valve body outside the second valve stem. The O-ring and the third gasket are provided to improve the sealing and firmness of the air check valve.

[0010] Preferably, a packing is provided on the outer wall of the second valve stem on one side of the gland, and an O-ring is provided on the outer wall of the second valve stem away from the second hand wheel end, so that the sealing performance of the air check valve is improved by the provision of the O-ring.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the air check valve for the speed regulator pressure tank not only eliminates the potential safety hazards of the air check valve, thereby improving the safety of the air check valve when in use, but also improves the sealing performance of the air check valve when in use, ensures the overall firmness of the air check valve, and improves the convenience of the air check valve when in maintenance;

[0012] (1) By setting up the air supply valve body, the air release valve body and other related components, the air check valve can be released and supplied with air, thereby reducing the high pressure or low pressure inside the air check valve, thereby eliminating the safety hazards of the air check valve and improving the safety of the air check valve when in use;

[0013] (2) By providing the first gasket, the second gasket, the O-ring, the O-ring, the third gasket, and the fourth gasket, the connection positions of the various components of the air check valve can be sealed and fastened, thereby improving the sealing performance of the air check valve when in use and ensuring the overall firmness of the air check valve;

[0014] (3) Through the arrangement of the screws and the studs, the air check valve can be disassembled by simply screwing the screws and the studs out to the outside of the check valve body and the air supply valve body, thereby improving the convenience of maintaining the air check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 2 This is a side view of the structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the side cross-sectional structure of the gas supply valve body of the utility model;

[0018] Figure 4 This is a schematic diagram of the front view structure of the gas supply valve body of the utility model.

[0019] In the figure: 1. check valve body; 2. screw; 3. first gasket; 4. rubber pad; 5. valve plug; 6. spring; 7. air supply valve body; 8. stud; 9. first nut; 10. second gasket; 11. air release valve body; 12. first valve stem; 13. first hand wheel; 14. second nut; 15. O-ring; 16. O-ring; 17. threaded sleeve; 18. second valve stem; 19. third gasket; 20. packing; 21. gland; 22. lock nut; 23. fourth gasket; 24. second hand wheel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4The utility model provides an embodiment: an air check valve for a speed regulator pressure tank, comprising a check valve body 1, a valve plug 5 is arranged at one end inside the check valve body 1, and a rubber pad 4 is arranged inside the check valve body 1 below the valve plug 5;

[0022] When in use, the rubber pad 4 is provided to improve the stability between the valve plug 5 and the check valve body 1;

[0023] A first gasket 3 is arranged inside the check valve body 1 below the rubber pad 4, and a screw 2 is installed at the bottom end of the first gasket 3;

[0024] When in use, the first washer 3 is provided to improve the stability between the screw 2 and the check valve body 1;

[0025] A spring 6 is installed inside the check valve body 1 above the valve plug 5, and a fourth gasket 23 is provided at the connection position between the check valve body 1 and the air supply valve body 7;

[0026] When in use, the fourth gasket 23 is provided to improve the firmness between the check valve body 1 and the air supply valve body 7;

[0027] A gas supply valve body 7 is arranged at the top of the check valve body 1, and studs 8 with equal spacing are installed at the edge position of the surface of the gas supply valve body 7, a first nut 9 is arranged at the end of the stud 8 away from the gas supply valve body 7, and a second gasket 10 is arranged at the contact position between the stud 8 and the gas supply valve body 7, a gas release valve body 11 is arranged on the outer wall of one side of the gas supply valve body 7, a first valve stem 12 is arranged inside the gas release valve body 11, one end of the first valve stem 12 extends to the outside of the gas release valve body 11 and is provided with a first hand wheel 13, and a second nut 14 is installed on the outer wall of the first valve stem 12 on the side of the first hand wheel 13 away from the gas release valve body 11, a threaded sleeve 17 is arranged on the surface of the gas supply valve body 7, a third gasket 19 is arranged at the connection position between the threaded sleeve 17 and the gas supply valve body 7, and an O-ring 16 is arranged inside the gas supply valve body 7 outside the second valve stem 18;

[0028] When in use, the O-ring 16 and the third gasket 19 are arranged to improve the sealing and firmness of the air check valve;

[0029] A packing 20 is provided on the outer wall of the second valve stem 18 on one side of the gland 21, and an O-ring 15 is provided on the outer wall of the second valve stem 18 away from the second hand wheel 24;

[0030] When in use, the O-ring 15 is provided to improve the sealing performance of the air check valve;

[0031] A second valve stem 18 is arranged inside the screw sleeve 17, one end of the second valve stem 18 extends to the outside of the screw sleeve 17 and is provided with a second hand wheel 24, a pressure cover 21 is arranged on the outer wall of the screw sleeve 17 away from the air supply valve body 7, and a lock nut 22 is arranged on the outer wall of the pressure cover 21 away from the screw sleeve 17.

[0032] When the embodiment of the present application is in use, firstly, by setting the first gasket 3, the second gasket 10, the O-ring 15, the O-ring 16, the third gasket 19, and the fourth gasket 23, the connection positions of the components of the air check valve can be sealed and tightened to improve the sealing of the air check valve and ensure the overall firmness of the air check valve. Thereafter, by setting the relevant components such as the air replenishing valve body 7 and the air venting valve body 11, the air check valve can be deflated and replenished, thereby reducing the high pressure or low pressure inside the air check valve to eliminate the safety hazards of the air check valve and improve the safety of the air check valve. Finally, by setting the screws 2 and the studs 8, the air check valve can be disassembled and maintained by simply unscrewing the screws 2 and the studs 8 to the outside of the check valve body 1 and the air replenishing valve body 7, thereby completing the use of the air check valve.

Claims

1. Air check valve for speed regulator pressure tank, characterized by: The invention comprises a check valve body (1), a gas supply valve body (7) is arranged at the top end of the check valve body (1), studs (8) are installed at equal intervals at the edge of the surface of the gas supply valve body (7), a first nut (9) is arranged at the end of the stud (8) away from the gas supply valve body (7), a second gasket (10) is arranged at the contact position between the stud (8) and the gas supply valve body (7), a gas release valve body (11) is arranged on the outer wall of one side of the gas supply valve body (7), a first valve stem (12) is arranged inside the gas release valve body (11), and one end of the first valve stem (12) extends to the outside of the gas release valve body (11). A first hand wheel (13) is provided, a second nut (14) is installed on the outer wall of the first valve stem (12) on the side of the first hand wheel (13) away from the air release valve body (11), a threaded sleeve (17) is provided on the surface of the air supply valve body (7), a second valve stem (18) is provided inside the threaded sleeve (17), one end of the second valve stem (18) extends to the outside of the threaded sleeve (17) and is provided with a second hand wheel (24), a pressure cover (21) is provided on the outer wall of the threaded sleeve (17) away from the air supply valve body (7), and a lock nut (22) is provided on the outer wall of the pressure cover (21) away from the threaded sleeve (17).

2. The air check valve for the speed regulator pressure tank according to claim 1, characterized in that: A valve plug (5) is provided at one end of the check valve body (1), and a rubber pad (4) is provided inside the check valve body (1) below the valve plug (5).

3. The air check valve for the speed regulator pressure tank according to claim 2, characterized in that: A first gasket (3) is arranged inside the check valve body (1) below the rubber pad (4), and a screw (2) is installed at the bottom end of the first gasket (3).

4. The air check valve for the speed regulator pressure tank according to claim 2, characterized in that: A spring (6) is installed inside the check valve body (1) above the valve plug (5), and a fourth gasket (23) is provided at the connection position between the check valve body (1) and the air supply valve body (7).

5. The air check valve for the speed regulator pressure tank according to claim 1, characterized in that: A third gasket (19) is provided at the connection position between the threaded sleeve (17) and the air supply valve body (7), and an O-ring (16) is provided inside the air supply valve body (7) outside the second valve stem (18).

6. The air check valve for the speed regulator pressure tank according to claim 1, characterized in that: A packing (20) is provided on the outer wall of the second valve stem (18) on one side of the gland (21), and an O-ring (15) is provided on the outer wall of the end of the second valve stem (18) away from the second hand wheel (24).

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