High-sealing-performance ball valve with male connector

Abstract

The utility model discloses a high-sealing-performance ball valve with a male connector, which belongs to the field of valves and comprises a ball body, a ball hole is arranged on the ball body, a ball valve rod is arranged at the top of the ball body, and a handle is fixed at the outer end of the ball valve rod. A packing inner sleeve and a packing outer sleeve are sleeved on the periphery of the ball valve rod; the valve body is externally connected with a male connector; the male connector comprises a male connector body, a valve clack is arranged in the male connector body, and the valve clack comprises a male connector valve rod and a valve clack disc. A support is arranged at one end of the male connector body and provided with a shaft sleeve and a through hole. The shaft sleeve and the male connector valve rod are sleeved with a spring in a compressed state. The ball valve rod is sleeved with a sealing sleeve and a belleville spring above the packing inner sleeve and the packing outer sleeve, and the belleville spring is always in a compressed state; annular grooves are formed in the inner wall and the outer wall of the sealing sleeve, an inner sealing ring is arranged in the annular groove in the inner wall, and an outer sealing ring is arranged in the annular groove in the outer wall. According to the utility model, the integral sealing performance is improved, and the structure is more compact at the same time.

Description

Technical Field

[0001] The utility model relates to a ball valve, in particular to a high-sealing ball valve with a male joint, belonging to the field of valves. Background Art

[0002] As a fluid control device, ball valves offer many advantages, including simple structure, fast switching, and low fluid resistance. These features have led to their widespread application in various industrial fields, including but not limited to petrochemicals, power generation, metallurgy, and pharmaceuticals.

[0003] A dry-type coupling, consisting of a female and male connector, is a fast-connect and quick-disconnect option, making it ideal for applications requiring frequent replacement or repair. Connecting a ball valve to a dry-type coupling further enhances connection convenience, reducing installation and removal time and improving work efficiency.

[0004] When a ball valve is in operation, to prevent the medium inside the valve from leaking as the valve stem moves, a common method is to fill the gap between the valve stem and the valve body with sealing packing. A threaded gland is installed above the sealing packing. The gland exerts downward pressure on the sealing packing, compacting it and filling the space between the valve stem and the valve body with the sealing packing, thereby achieving a sealing effect. However, with long-term use or in low temperature conditions, the sealing packing will shrink in volume, resulting in a poor seal between the valve stem and the valve body, causing fluid leakage.

[0005] In addition, the internal space structure of the existing dry-type joint male connector is not compact enough, and it occupies a large space after being connected to the ball valve, which is not easy to operate in a small space. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a high-sealing ball valve with a male joint, which improves the overall sealing performance and also makes the structure more compact.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a high-sealing ball valve with a male joint, comprising a valve body with a fluid flow channel arranged inside and a ball arranged in the flow channel of the valve body for controlling the flow of fluid by rotation, the ball body is provided with a through ball hole along the direction of the fluid flow channel and the top of the ball is provided with a ball valve stem that passes through the valve body and drives the ball to rotate, and a handle is fixed to the outer end of the ball valve stem; the outer peripheral sleeve of the ball valve stem is provided with a packing inner sleeve and a packing outer sleeve that play a sealing role; one side of the valve body is externally connected to a quickly detachable male joint that matches the female joint; the male joint comprises a male joint body that is fixedly connected to the valve body and provided with a fluid flow channel, and the inner end of the male joint body away from the valve body is provided with a valve that realizes flow by sliding back and forth. The valve disc of the body is used to open and close the valve body, and the valve disc includes a male joint valve stem and a valve disc disk fixed to the end of the male joint valve stem for blocking the fluid channel; a bracket is provided at one end of the internal part of the male joint body close to the valve body, and a shaft sleeve is provided on the bracket for the male joint valve stem to be inserted into and slide therein, and a plurality of through holes arranged around the shaft sleeve; a spring in a compressed state is provided on the shaft sleeve and the male joint valve stem; the outer periphery of the ball valve stem located above the packing inner sleeve and the packing outer sleeve is provided with a sealing sleeve and a disc spring in sequence from bottom to top, and the disc spring is always in a compressed state and continuously compresses the sealing sleeve; annular grooves are respectively provided on the inner wall and outer wall of the sealing sleeve, and an inner sealing ring is provided in the annular groove on the inner wall, and an outer sealing ring is provided in the annular groove on the outer wall.

[0008] A further improvement of the technical solution of the present utility model is that: the valve body is connected to the male joint body through a flange, the middle part of the flange end face of the male joint body extends outward to form an annular protrusion, and the corresponding position of the flange end face of the valve body is recessed inward to form an annular groove, and a valve seat body with a connecting hole in the middle is also fixed inside the annular protrusion.

[0009] A further improvement of the technical solution of the present utility model is that a sealing ring I and a sealing ring II are respectively provided between the annular protrusion of the male joint body and the valve body and the valve seat body.

[0010] A further improvement of the technical solution of the present utility model is that a hole-use earless retaining ring is provided on a side of the bracket close to the valve body.

[0011] A further improvement of the technical solution of the present utility model is that: a pressure pad is sleeved on the valve disc, and a sealing pad is provided between the valve disc and the pressure pad.

[0012] A further improvement of the technical solution of the present utility model is that the inner sealing ring and the outer sealing ring are distributed in a staggered manner.

[0013] A further improvement of the technical solution of the present utility model is that ball pads having a sealing effect are provided between the left and right sides of the ball and the valve body.

[0014] A further improvement of the technical solution of the present utility model is that a flat washer is provided at the lower part of the ball valve stem, and the material of the flat washer is polytetrafluoroethylene.

[0015] A further improvement of the technical solution of the present invention is that: the valve body is further provided with a relief valve with an internal flow channel at a right angle of 90 degrees, and the relief valve outlet is downward and perpendicular to the ground.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is:

[0017] The closure of the valve stem and the valve body is fixed with the closure of the valve body, and the closure of the valve body is fixed with the closure of the valve body to prevent the closure of the valve body from being damaged. The closure of the valve body is fixed with the closure of the valve body to prevent the closure of the valve body from being damaged. The closure of the valve body is fixed with the closure of the valve body to prevent the closure of the valve body from being damaged.

[0018] The valve body and male connector of this utility model are connected by a flange. The center of the flange end face of the male connector extends outward to form an annular protrusion, while the corresponding position of the flange end face of the valve body is recessed inward to form an annular groove. A valve seat body with a central communicating hole is fixed within the annular protrusion. The annular groove on the valve body, the annular protrusion on the male connector, and the valve seat body form a labyrinth seal to prevent fluid leakage.

[0019] Sealing pads or ball pads with a sealing effect are provided between the annular protrusion of the male joint body of the utility model and the valve body, between the annular protrusion and the valve seat body, between the valve disc and the pressure pad, and between the left and right sides of the sphere and the valve body, and the inner sealing rings and the outer sealing rings are distributed in a staggered manner, which further enhances the overall sealing performance.

[0020] The utility model provides a flat pad made of polytetrafluoroethylene at the pressing position between the valve stem and the valve body, which has strong self-lubricating performance, can greatly reduce the friction force when the valve stem rotates, and reduce the operating force of the ball valve opening and closing action.

[0021] The valve body of the utility model is also provided with a relief valve with an internal flow channel at a right angle of 90 degrees, and the relief valve outlet is downward and perpendicular to the ground, which is convenient for connection with the relief pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front sectional view of the utility model;

[0023] Figure 2 It is a side view of the utility model;

[0024] Figure 3It is a top view of the utility model.

[0025] Among them, 1. valve body; 2. ball pad; 3. ball; 4. ball valve stem; 5. flat pad; 6. inner packing sleeve; 7. outer packing sleeve; 8. male joint stem; 9. valve disc disk; 10. valve disc; 11. ball hole; 12. inner sealing ring; 13. outer sealing ring; 14. sealing sleeve; 15. disc spring; 16. shaft sleeve 17. handle; 18. valve seat body; 19. sealing ring I; 20. sealing ring II; 21. earless retaining ring for hole; 22. bracket; 23. male joint body; 24. through hole; 25. pressure pad; 26. sealing gasket; 27. spring; 28. stud; 29. ​​nut; 30. relief valve; 31. connecting hole. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the embodiments:

[0027] like Figure 1 As shown, a high-sealing ball valve with a male connector comprises a ball valve and a male connector, which are connected and fixed by a valve body 1 and a male connector body 23. The valve body 1 and the male connector body 23 are connected by a flange. Bolt holes are provided at the four corners of the flange end faces of the valve body 1 and the male connector body 23. Matching studs 28 pass through the bolt holes and are fixed by nuts 29. The middle part of the flange end face of the male connector body 23 extends outward to form an annular protrusion, and the corresponding position of the flange end face of the valve body 1 is recessed inward to form an annular groove. A valve seat body 18 with a communicating hole 31 in the middle is also fixed inside the annular protrusion. The structure of the annular groove on the valve body 1, the annular protrusion on the male connector body 23 and the valve seat body 18 forms a labyrinth seal to prevent fluid leakage.

[0028] The valve body 1 is the main shell of the ball valve, which has the connection port and channel of the valve, and is used to control the inflow and outflow of the fluid; there is a ball 3 inside the valve body 1, and there is a ball hole 11 running through the ball 3, which controls the flow or blocking of the fluid by rotation; there are ball pads 2 on the left and right sides of the ball 3 and the valve body 1 for sealing; the top of the ball 3 is connected to the ball valve stem 4, which is responsible for transmitting the rotational force and the motion force to make the ball 3 rotate; the ball valve stem 4 is connected to the outside of the handle 13, which is used to control the rotation of the ball 3 to achieve the purpose of switching or regulating the fluid; a polytetrafluoroethylene is provided on the back of the lower large end of the ball valve stem 4 and the position where it is pressed against the valve body 1. The fluoroethylene flat gasket 5 can greatly reduce the friction when the ball valve stem 4 rotates and reduce the operating force of the ball valve opening and closing actions due to the self-lubricating properties of polytetrafluoroethylene; the ball valve stem 4 is provided with a packing inner sleeve 6 and a packing outer sleeve 7 that fill the gap between the ball valve stem 4 and the valve body 1, and the outer periphery of the ball valve stem 4 above the packing inner sleeve 6 and the packing outer sleeve 7 is sequentially covered with a sealing sleeve 14 and a disc spring 15 from bottom to top, and the disc spring 15 is always in a compressed state and continuously compresses the sealing sleeve 14, ensuring that the gap between the valve stem 4 and the valve body 1 is always filled, thereby enhancing the overall sealing of the utility model.

[0029] The male connector includes a male connector body 23 fixedly connected to the valve body 1 and provided with a fluid flow channel. A valve flap 10 for realizing fluid flow through and through by sliding back and forth is provided at the end of the male connector body 23 away from the valve body 1. The valve flap 10 includes a male connector valve stem 8 and a valve flap disk 9 fixed to the end of the male connector valve stem 8 for blocking the fluid channel; a bracket 22 is provided at the end of the male connector body 23 close to the valve body 1, and a hole-use earless retaining ring 21 is provided on the side of the bracket 22 close to the valve body 1. A shaft sleeve 16 into which the male connector valve stem 8 is inserted for sliding and a plurality of through holes 24 arranged around the shaft sleeve 16 are provided on the other side of the bracket 22; a spring 27 in a compressed state is sleeved on the shaft sleeve 16 and the male connector valve stem 8; the male connector of the utility model has a small number of components and a compact overall structure.

[0030] The utility model has annular grooves on the inner and outer walls of the sealing sleeve 14, and sealing members with sealing effect are provided on the inner wall annular groove, the outer wall annular groove, between the annular protrusion and the valve body 1, between the annular protrusion and the valve seat body 18, between the valve disc 9 and the pressure pad 25, and between the left and right sides of the sphere 3 and the valve body 1, and the inner sealing ring 12 and the outer sealing ring 13 are distributed in a staggered manner, which further enhances the overall sealing performance.

[0031] The valve body 1 of the present invention is further provided with a relief valve 30 with an internal flow channel at a right angle of 90 degrees, and the outlet of the relief valve 30 is downward and perpendicular to the ground, so as to facilitate connection with the relief pipe.

[0032] Working principle: The gap between the valve stem 4 and the valve body 1 of the ball valve of the present invention is located on the basis of the packing inner sleeve 6 and the packing outer sleeve 7, and a sealing sleeve 14 is added. There are annular grooves on the inner and outer walls of the sealing sleeve 14, and an inner sealing ring 12 is provided in the inner wall annular groove, and an outer sealing ring 13 is provided in the outer wall annular groove, and a disc spring 15 which is always in a compressed state is provided on the upper part of the sealing sleeve, which applies continuous pressure to the sealing sleeve 13 and the sealing packing, thereby ensuring that the gap between the valve stem 4 and the valve body 1 of the ball valve is always filled and the sealing performance is more excellent; and the male joint of the present invention has fewer components and a compact overall structure.

Claims

1. A high-sealing ball valve with a male connector, comprising a valve body (1) with a fluid flow channel provided therein and a ball (3) provided in the flow channel of the valve body (1) for controlling the flow of the fluid by rotating, the ball (3) being provided with a through ball hole (11) along the direction of the fluid flow channel and a ball valve stem (4) being provided on the top of the ball (3) for passing through the valve body (1) to drive the ball (3) to rotate, a handle (17) being fixed to the outer end of the ball valve stem (4); the outer periphery of the ball valve stem (4) being provided with a packing inner sleeve (6) and a packing outer sleeve (7) for sealing; and characterized in that: One side of the valve body (1) is externally connected to a male connector that can be quickly disassembled and matches the female connector; the male connector includes a male connector body (23) fixedly connected to the valve body (1) and provided with a fluid flow channel, and an end of the male connector body (23) away from the valve body (1) is provided with a valve flap (10) for realizing fluid on and off by sliding back and forth, and the valve flap (10) includes a male connector valve stem (8) and a valve flap disk (9) fixed to the end of the male connector valve stem (8) for blocking the fluid channel; an end of the male connector body (23) close to the valve body (1) is provided with a bracket (22), and a shaft sleeve (16) is provided on the bracket (22) for the male connector valve stem (8) to slide therein and a plurality of through holes (24) arranged around the shaft sleeve (16); a spring (27) in a compressed state is sleeved on the shaft sleeve (16) and the male connector valve stem (8); The outer periphery of the ball valve stem (4) located above the inner packing sleeve (6) and the outer packing sleeve (7) is covered with a sealing sleeve (14) and a disc spring (15) in sequence from bottom to top, and the disc spring (15) is always in a compressed state and continuously compresses the sealing sleeve (14); annular grooves are respectively provided on the inner wall and the outer wall of the sealing sleeve (14), and an inner sealing ring (12) is provided in the annular groove on the inner wall, and an outer sealing ring (13) is provided in the annular groove on the outer wall.

2. A high-sealing ball valve with a male connector according to claim 1, characterized in that: The valve body (1) is connected to the male connector body (23) via a flange. The middle portion of the flange end face of the male connector body (23) extends outward to form an annular protrusion, and the corresponding position of the flange end face of the valve body (1) is recessed inward to form an annular groove. A valve seat body (18) with a connecting hole (31) in the middle is also fixed inside the annular protrusion.

3. A high-sealing ball valve with a male connector according to claim 2, characterized in that: A sealing ring I (19) and a sealing ring II (20) are respectively provided between the annular protrusion of the male connector body (23), the valve body (1) and the valve seat body (18).

4. The high-sealing ball valve with a male connector according to claim 1, characterized in that: A hole-use earless retaining ring (21) is provided on one side of the bracket (22) close to the valve body (1).

5. The high-sealing ball valve with a male connector according to claim 1, characterized in that: A pressure pad (25) is sleeved on the valve disc (9), and a sealing pad (26) is provided between the valve disc (9) and the pressure pad (25).

6. The high-sealing ball valve with a male connector according to claim 1, characterized in that: The inner sealing ring (12) and the outer sealing ring (13) are distributed in a staggered manner.

7. The high-sealing ball valve with a male connector according to claim 1, characterized in that: Ball pads (2) with a sealing effect are provided between the left and right sides of the ball (3) and the valve body (1).

8. The high-sealing ball valve with a male connector according to claim 1, characterized in that: A flat washer (5) is provided at the lower portion of the ball valve stem (4), and the material of the flat washer (5) is polytetrafluoroethylene.

9. The high-sealing ball valve with a male connector according to claim 1, characterized in that: The valve body (1) is also provided with a relief valve (30) with an internal flow channel at a right angle of 90 degrees, and the outlet of the relief valve (30) is downward and perpendicular to the ground.

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