Fluorine-lined fixed ball valve

Abstract

The fluorine-lined fixed ball valve comprises a valve main body, a ball body is installed in the valve main body, a valve seat matched with the side face of the ball body is arranged on the side face of the ball body, the valve main body is connected with a valve deck, a penetrating groove penetrating through the valve deck is formed in the valve deck in a penetrating mode, and an inner hexagon screw is installed on the valve deck through the penetrating groove. A spring is arranged on the side, facing the valve deck, of the inner hexagon screw, and an annular gasket is arranged between the spring and the valve deck. The ball has the advantage of improving the stability of the ball.

Description

Technical Field

[0001] The invention relates to the field of ball valves, in particular to a fluorine-lined fixed ball valve. Background Art

[0002] The ball in the current fluorine-lined fixed ball valve is prone to shaking after long-term use, so it needs to be improved. Summary of the invention

[0003] The object of the present invention is to provide a fluorine-lined fixed ball valve to solve the problems raised in the above-mentioned background technology, which has the advantage of increasing the stability of the ball.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fluorine-lined fixed ball valve, comprising a valve body, a ball installed in the valve body, a valve seat matching the side of the ball is arranged on the side of the ball, the valve body is connected to a valve cover, the valve cover is penetrated by a through groove penetrating the valve cover, a hexagon socket screw is installed on the valve cover through the through groove, a spring is arranged on the side of the hexagon socket screw facing the valve cover, and an annular gasket is arranged between the spring and the valve cover.

[0005] By adopting the above technical solution, the hexagon socket screw set on the valve cover can adjust the position of the valve seat to ensure that the valve seat is in the required position to fit the ball. The spring is set to squeeze the valve seat so that the valve seat is always in a state of fitting the ball. The setting of the annular gasket reduces the wear between the two.

[0006] As a further solution of the present invention: it also includes a valve stem connected to the top of the sphere, a first connecting plate located in the circumference of the valve stem is installed on the inner side of the valve cover, the first connecting plate is connected to a second connecting plate sleeved on the circumference of the valve stem by bolts, an accommodating groove is provided on the inner side of the second connecting plate, the valve stem is sleeved with a bearing body located in the accommodating groove, and the valve stem is sleeved with a pressure cover located on one side of the bearing body.

[0007] By adopting the above technical solution, the setting of the bearing body ensures that the center of rotation of the sphere is always fixed, the setting of the first connecting plate and the second connecting plate facilitates disassembly and installation, the setting of the accommodating groove facilitates the installation of the bearing body, and the setting of the pressure cover increases the stability of the bearing body.

[0008] Preferably, a filling groove is provided between the first connecting plate and the second connecting plate, and a filling body is provided in the filling groove.

[0009] Preferably, a stuffing box is installed on the inner side of the valve body, a stuffing body is arranged between the stuffing box and the bottom of the sphere, a stuffing gland is arranged below the stuffing body, a bearing body is sleeved on the lower end of the sphere, and a bearing gland is installed below the bearing body.

[0010] By adopting the above technical solution, the arrangement of the packing body increases the stability of the ball during rotation, and a protrusion is arranged at the lower end of the ball, which is stuck between the packing boxes to increase the stability of the ball during rotation.

[0011] The present invention is further configured as follows: a pressing rod is provided on the side surface of the valve body, and the pressing rod is connected to the side surface of the valve body via a thread.

[0012] By adopting the above technical solution, the connection strength between the pressing rod and the valve body is increased.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The hexagon socket screw set on the valve cover can adjust the position of the valve seat to ensure that the valve seat is in the required position to fit the ball. The spring is set to squeeze the valve seat so that the valve seat is always in a state of fitting the ball. The annular gasket is set to reduce the wear between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment;

[0016] Figure 2 for Figure 1 A partial enlarged view of the middle A area;

[0017] Figure 3 for Figure 2 A structural diagram of the connection relationship between the middle pressing rod and the hexagon socket screw.

[0018] In the figure: 1. valve cover; 2. hexagon socket screw; 3. annular gasket; 4. valve seat; 5. valve body; 6. stuffing box; 7. stuffing gland; 8. bearing gland; 9. bearing body; 10. stuffing body; 11. first connecting plate; 12. second connecting plate; 13. receiving groove; 14. first gland; 15. stuffing groove; 16. spring; 17. through groove; 18. valve stem; 19. ball; 20. pressing rod. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the embodiment of the present invention,

[0021] A fluorine-lined fixed ball valve, such as Figure 1-Figure 3As shown, it includes a valve body 5, in which a ball 19 is installed, and a valve seat 4 that fits with the side of the ball 19 is arranged on the side of the ball 19, and the valve body 5 is connected to a valve cover 1, and the valve cover 1 is penetrated by a through groove 17 that penetrates the valve cover 1, and the valve cover 1 is installed with a hexagon socket screw 2 through the through groove 17, and a spring 16 is arranged on the side of the hexagon socket screw 2 facing the valve cover 1, and an annular gasket 3 is arranged between the spring 16 and the valve cover 1.

[0022] It also includes a valve stem 18 connected to the top of the ball 19, and a first connecting plate 11 located in the circumference of the valve stem 18 is installed on the inner side of the valve cover 1. The first connecting plate 11 is connected to a second connecting plate 12 sleeved on the circumference of the valve stem 18 by bolts, and an accommodating groove 13 is provided on the inner side of the second connecting plate 12. The valve stem 18 is sleeved with a bearing body 9 located in the accommodating groove 13, and the valve stem 18 is sleeved with a first pressure cover 14 located on one side of the bearing body 9.

[0023] A filling groove 15 is disposed between the first connecting plate 11 and the second connecting plate 12 , and a filling body 10 is disposed in the filling groove 15 .

[0024] A stuffing box 6 is installed on the inner side of the valve body 5, a stuffing body 10 is arranged between the stuffing box 6 and the bottom of the ball 19, a stuffing gland 7 is arranged below the stuffing body 10, a bearing body 9 is sleeved on the lower end of the ball 19, and a bearing gland 8 is installed below the bearing body 9.

[0025] A pressing rod 20 is disposed on the side of the valve body 5 , and the pressing rod 20 is connected to the side of the valve body 5 via threads.

[0026] Working principle:

[0027] The hexagon socket screw 2 arranged on the valve cover 1 can adjust the position of the valve seat 4 to ensure that the valve seat 4 is in the required position to fit the ball 19. The setting of the spring 16 squeezes the valve seat 4 so that the valve seat 4 is always in a state of fitting the ball 19. The setting of the annular gasket 3 reduces the wear between the two.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fluorine-lined fixed ball valve, comprising a valve body (5), wherein a ball (19) is installed in the valve body (5), characterized in that: The side of the sphere (19) is provided with a valve seat (4) which fits with the side of the sphere (19); the valve body (5) is connected with a valve cover (1); the valve cover (1) is provided with a through groove (17) which penetrates the valve cover (1); the valve cover (1) is installed with a hexagon socket screw (2) through the through groove (17); a spring (16) is provided on the side of the hexagon socket screw (2) facing the valve cover (1); and an annular gasket (3) is provided between the spring (16) and the valve cover (1).

2. The fluorine-lined fixed ball valve according to claim 1, characterized in that: It also includes a valve stem (18) connected to the top of the ball (19), a first connecting plate (11) located in the circumference of the valve stem (18) is installed on the inner side of the valve cover (1), the first connecting plate (11) is connected to a second connecting plate (12) sleeved on the circumference of the valve stem (18) by bolts, the inner side of the second connecting plate (12) is provided with a receiving groove (13), the valve stem (18) is sleeved with a bearing body (9) located in the receiving groove (13), and the valve stem (18) is sleeved with a first pressure cover (14) located on one side of the bearing body (9).

3. The fluorine-lined fixed ball valve according to claim 2 is characterized in that: A filling groove (15) is provided between the first connecting plate (11) and the second connecting plate (12), and a filling body (10) is provided in the filling groove (15).

4. The fluorine-lined fixed ball valve according to claim 1, characterized in that: A stuffing box (6) is installed on the inner side of the valve body (5), a stuffing body (10) is arranged between the stuffing box (6) and the bottom of the ball (19), a stuffing cover (7) is arranged below the stuffing body (10), a bearing body (9) is sleeved on the lower end of the ball (19), and a bearing cover (8) is installed below the bearing body (9).

5. The fluorine-lined fixed ball valve according to claim 1, characterized in that: A pressing rod is arranged on the side of the valve body, and the pressing rod is connected to the side of the valve body through threads.

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