A ball valve structure loading, shipping and unloading separation valve

Abstract

This utility model relates to the field of valve technology and discloses a ball valve structure for vehicle and ship loading / unloading separation valve, comprising: a valve body, a valve cover, a ball, a valve body nut, and valve body bolts. The valve body has an internal valve body sealing lip. The valve cover is connected to the valve body via valve body bolts and a valve body nut. A gasket is placed between the valve body and the valve cover. The ball is disposed inside the valve body, and a first bearing is located inside the valve body at the ball. A shaft is provided on the inner ring of the first bearing. Supported by the shaft and the first bearing, the ball can rotate within the valve body to control fluid flow. This ball valve structure for vehicle and ship loading / unloading separation valve exhibits low friction between the valve stem and valve body during operation, reducing fatigue. It also provides stable packing seals, excellent flange sealing performance, and gaskets at multiple screw locations to increase screw lifespan. Therefore, the overall service life of the valve is long, and its operating performance is stable.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a ball valve structure for detachment from loading and unloading onto vehicles or ships. Background Technology

[0002] In recent years, with the development of ultra-high pressure technology, ultra-high pressure valves have been widely used in polyethylene production, isostatic pressing, artificial crystal, powder metallurgy, food pressure processing, waterjet cutting, and testing equipment. Ultra-high pressure valves operate under extremely harsh conditions, such as ultra-high pressure (up to 100 MPa), high temperature, corrosive media, cyclic loads, impact loads, and high-frequency reciprocating motion. This places high demands on valve performance, such as high-strength pressure-bearing forgings that combine strength and toughness, highly reliable dynamic / static seals, and high-precision pressure / flow control.

[0003] The failure modes of ultra-high pressure valves are diverse, generally including erosion damage of valve internals, fatigue fracture of valve core and valve stem, packing seal failure, external leakage at the middle flange seal, bolt fatigue fracture, and wear failure of actuator seals. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a ball valve structure for unloading vehicles and ships, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ball valve structure for unloading vehicles and ships, comprising: a valve body, a valve cover, a ball, a valve body nut, and a valve body bolt. The valve body has a valve body sealing lip inside. The valve cover is connected to the valve body via the valve body bolt and the valve body nut. A gasket is provided between the valve body and the valve cover. The ball is disposed inside the valve body. A first bearing is provided inside the valve body at the ball. A shaft is provided on the inner ring of the first bearing. The ball can rotate within the valve body to control the flow of fluid, supported by the shaft and the first bearing.

[0006] A valve seat assembly, located inside the valve body and cooperating with a ball, the valve seat assembly including a valve seat insert, a valve seat support, a valve seat spring and a valve seat sealing lip;

[0007] The valve stem and valve stem cover bolt / nut are provided. The valve stem cover is provided on the top of the valve body and is installed on the top of the valve body by valve stem cover bolt / nut. The valve stem passes through the valve stem cover. One end of the valve stem located inside the valve body is connected to the ball. The valve stem is used to drive the ball to rotate. The valve stem cover is provided with a thrust ring and a valve stem cover sealing lip. The thrust ring is used to support and position the valve stem and avoid the valve stem from being subjected to excessive axial force. The valve stem sealing lip increases the sealing performance between the valve stem cover and the valve stem.

[0008] The valve body is provided with a bottom cover, bottom cover bolts, and bottom cover nuts. The bottom cover is connected to the valve body by the bottom cover bolts and bottom cover nuts. A bottom cover gasket is provided between the bottom cover and the valve body.

[0009] Furthermore, a valve stem sealing lip, valve stem packing, and packing gasket are provided between the valve stem and the valve stem cover.

[0010] Furthermore, a top flange is provided on the top of the valve stem cover, a top flange pin and a top flange bolt are provided between the top flange and the valve stem cover, and a top flange O-ring is provided between the top flange and the valve stem cover.

[0011] Furthermore, a second bearing is provided inside the valve stem cover, and the valve stem is connected to the interior of the second bearing.

[0012] Furthermore, a valve stem cover pin is provided on the outer surface of the valve stem cover, and a valve stem cover gasket is provided between the valve stem cover and the valve body.

[0013] Furthermore, the surface of the valve stem is provided with an antistatic ball and an antistatic spring.

[0014] Furthermore, the surface of the valve body is provided with lifting lugs.

[0015] Furthermore, the valve seat spring is fixedly connected to the valve seat support to provide preload.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This ball valve is designed for vehicle and ship loading / unloading. The valve stem and body experience less friction during operation, reducing fatigue. It also features stable packing seals, excellent flange sealing performance, and gaskets at multiple screw locations to extend screw life. As a result, the valve has a long overall service life and stable operating performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0019] Figure 2 This is a schematic diagram of the valve stem and related structures of this utility model;

[0020] Figure 3 This is a schematic diagram of the valve seat assembly and related structures of this utility model.

[0021] In the diagram: 1. Valve body; 2. Valve cover; 3. Valve body nut; 4. Valve body bolt; 5. Gasket; 6. Bottom cover; 7. Shaft; 8. First bearing; 9. Valve seat assembly; 10. Valve body sealing lip; 11. Bottom cover nut; 12. Bottom cover bolt; 13. Bottom cover gasket; 14. Ball; 15. Valve stem; 16. Valve stem cover gasket; 17. Valve stem cover sealing lip; 18. Valve stem cover bolt / nut; 19. Valve stem sealing lip; 20. Packing gasket; 21. Valve stem cover; 22. Valve stem packing; 23. Top flange; 24. Top flange O-ring; 25. Top flange bolt; 26. Top flange pin; 27. Valve stem cover pin; 28. Thrust ring; 29. ​​Second bearing; 30. Lifting lug; 901. Valve seat insert; 902. Valve seat support; 903. Valve seat spring; 904. Valve seat sealing lip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to the following: Figures 1-3 This utility model provides a technical solution: a ball valve structure for unloading vehicles and ships, comprising: a valve body 1, a valve cover 2, a ball 14, a valve body nut 3, and a valve body bolt 4. The valve body 1 is provided with a valve body sealing lip 10 inside. The valve cover 2 is connected to the valve body 1 through the valve body bolt 4 and the valve body nut 3. A gasket 5 is provided between the valve body 1 and the valve cover 2. The ball 14 is disposed inside the valve body 1. A first bearing 8 is provided inside the valve body 1 at the ball 14. A shaft 7 is provided on the inner ring of the first bearing 8. The ball 14 can rotate inside the valve body 1 through the support of the shaft 7 and the first bearing 8 to control the flow of fluid.

[0024] Valve seat assembly 9 is located inside the valve body 1 and cooperates with the ball 14. Valve seat assembly 9 includes valve seat insert 901, valve seat support 902, valve seat spring 903 and valve seat sealing lip 904.

[0025] The valve stem 15 and valve stem cover bolts / nuts 18 are provided. A valve stem cover 21 is provided on the top of the valve body 1. The valve stem cover 21 is installed on the top of the valve body 1 by valve stem cover bolts / nuts 18. The valve stem 15 passes through the valve stem cover 21. One end of the valve stem 15 located inside the valve body 1 is connected to the ball 14. The valve stem 15 is used to drive the ball 14 to rotate. A thrust ring 28 and a valve stem cover sealing lip 17 are provided inside the valve stem cover 21. The thrust ring 28 is used to support and position the valve stem 15 and prevent the valve stem 15 from being subjected to excessive axial force. The valve stem cover sealing lip increases the sealing between the valve stem cover 21 and the valve stem 15. Specifically, the valve stem cover 21 is installed on the top of the valve body 1 by the valve stem cover bolts and nuts, and the valve stem 15 drives the ball 14 to rotate to control the flow. The thrust ring 28 supports and positions the valve stem 15.

[0026] Bottom cover 6, bottom cover bolt 12, and bottom cover nut 11. Bottom cover 6 is connected to valve body 1 by bottom cover bolt 12 and bottom cover nut 11. Bottom cover gasket 13 is provided between bottom cover 6 and valve body 1. Specifically, bottom cover 6 is connected to valve body 1 by the cooperation of bottom cover bolt 12 and bottom cover nut 11, and bottom cover gasket 13 increases the sealing between bottom cover 6 and valve body 1.

[0027] In this embodiment, a valve stem sealing lip 19, a valve stem packing 22, and a packing gasket 20 are provided between the valve stem 15 and the valve stem cover 21. Specifically, the valve stem sealing lip 19, the valve stem packing 22, and the packing gasket 20 increase the sealing performance between the valve stem 15 and the valve stem cover 21.

[0028] In this embodiment, a top flange 23 is provided on the top of the valve stem cover 21. A top flange pin 26 and a top flange screw 25 are provided between the top flange 23 and the valve stem cover 21. A top flange O-ring 24 is provided between the top flange 23 and the valve stem cover 21. Specifically, the top flange 23 is installed on the valve stem cover 21 by the top flange pin 26 and the top flange screw 25, and the sealing between the top flange 23 and the valve stem cover 21 is increased by the top flange O-ring 24.

[0029] In this embodiment, a second bearing 29 is provided inside the valve stem cover 21, and the valve stem 15 is connected to the inside of the second bearing 29. Specifically, the valve stem 15 is supported by the second bearing 29.

[0030] In this embodiment, a valve stem cover pin 27 is provided on the outer surface of the valve stem cover 21, and a valve stem cover gasket 16 is provided between the valve stem cover 21 and the valve body 1. Specifically, the valve stem cover 21 is installed on the outside of the valve body 1 by means of the valve stem cover pin 27, and the valve stem cover gasket 16 increases the sealing between the valve stem cover 21 and the valve body 1.

[0031] In this embodiment, the surface of the valve stem 15 is provided with an antistatic ball and an antistatic spring. Specifically, the antistatic ball and antistatic spring prevent static electricity accumulation from causing safety accidents.

[0032] In this embodiment, the surface of the valve body 1 is provided with a lifting lug 30. Specifically, the lifting lug 30 facilitates the handling and installation of the valve.

[0033] In this embodiment, the valve seat spring 903 is fixedly connected to the valve seat support 902 to provide preload. Specifically, the valve seat spring 903 provides preload so that the valve seat sealing lip 904 fits tightly against the valve body 1.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball valve structure loading and unloading ship separation valve, characterized in that, include: The valve body (1), valve cover (2), ball (14), valve body nut (3) and valve body bolt (4) are provided. The valve body (1) is provided with a valve body sealing lip (10). The valve cover (2) is connected to the valve body (1) through the valve body bolt (4) and the valve body nut (3). A gasket (5) is provided between the valve body (1) and the valve cover (2). The ball (14) is provided inside the valve body (1). A first bearing (8) is provided inside the valve body (1) at the ball (14). A shaft (7) is provided on the inner ring of the first bearing (8). The ball (14) can be rotated inside the valve body (1) by the support of the shaft (7) and the first bearing (8) to control the flow of fluid. The valve seat assembly (9) is located inside the valve body (1) and cooperates with the ball (14). The valve seat assembly (9) includes a valve seat insert (901), a valve seat support (902), a valve seat spring (903), and a valve seat sealing lip (904). A valve stem (15) and a valve stem cover bolt / nut (18) are provided. A valve stem cover (21) is provided on the top of the valve body (1). The valve stem cover (21) is installed on the top of the valve body (1) by the valve stem cover bolt / nut (18). The valve stem (15) passes through the valve stem cover (21). One end of the valve stem (15) located inside the valve body (1) is connected to the ball (14). The valve stem (15) is used to drive the ball (14) to rotate. A thrust ring (28) and a valve stem cover sealing lip (17) are provided inside the valve stem cover (21). The thrust ring (28) is used to support and position the valve stem (15) and avoid the valve stem (15) from being subjected to excessive axial force. The valve stem (15) sealing lip increases the sealing between the valve stem cover (21) and the valve stem (15). Bottom cover (6), bottom cover bolt (12) and bottom cover nut (11), the bottom cover (6) is connected to the valve body (1) by bottom cover bolt (12) and bottom cover nut (11), and a bottom cover gasket (13) is provided between the bottom cover (6) and the valve body (1).

2. A ball valve structure loading and unloading valve according to claim 1, characterized in that: A valve stem sealing lip (19), valve stem packing (22), and packing gasket (20) are provided between the valve stem (15) and the valve stem cover (21).

3. A ball valve structure loading and unloading valve according to claim 1, characterized in that: The valve stem cover (21) is provided with a top flange (23) at the top, and a top flange pin (26) and a top flange screw (25) are provided between the top flange (23) and the valve stem cover (21). A top flange O-ring (24) is provided between the top flange (23) and the valve stem cover (21).

4. A ball valve structure loading and unloading valve according to claim 1, characterized in that: The valve stem cover (21) is provided with a second bearing (29) inside, and the valve stem (15) is connected to the inside of the second bearing (29).

5. A ball valve structure loading and unloading valve according to claim 1, characterized in that: The outer surface of the valve stem cover (21) is provided with a valve stem cover pin (27), and a valve stem cover gasket (16) is provided between the valve stem cover (21) and the valve body (1).

6. A ball valve structure loading and unloading valve according to claim 1, characterized in that: The surface of the valve stem (15) is provided with an antistatic ball and an antistatic spring.

7. A ball valve structure loading and unloading valve according to claim 1, characterized in that: The valve body (1) is provided with a lifting lug (30) on its surface.

8. A ball valve structure loading and unloading valve according to claim 1, characterized in that: The valve seat spring (903) is fixedly connected to the valve seat support (902) to provide preload.

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