Ball valve

Abstract

The utility model belongs to the technical field of ball valves, and particularly relates to a ball valve which comprises a valve body, a valve element arranged in an inner cavity of the valve body, a limiting barrel connected to the top of the valve body, a valve rod arranged in the limiting barrel in a penetrating mode, a first spring connected to the inner bottom of the limiting barrel, and a second spring connected to the inner bottom of the limiting barrel. The valve rod is sleeved with a sealing gasket connected with the first spring and connected with the limiting cylinder in a sealed mode, the upper end of the valve rod is movably sleeved with a handle, the two sides of the bottom end of the handle are connected with limiting rods, the upper end of the valve rod is provided with a valve rod adjusting base, and the bottoms of the two sides of the handle are provided with telescopic adjusting rods used for limiting. The handle is limited through the limiting rod, the limiting groove and the limiting barrel, the handle is in positioning connection with the valve body, and the situation that a switch is not turned on or turned off in place due to touch is avoided; the problems that the valve element deviates from the position of the valve seat due to vibration in the using process of the ball valve, and the opening and closing states of the ball valve are changed are solved, and the using performance of the ball valve is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, and in particular relates to a ball valve. Background Art

[0002] Usually, a ball valve includes a valve body, a valve core and a valve stem. The valve core is arranged in the valve body, and the valve stem is connected to the valve core. By rotating the valve stem and driving the valve core, the on and off of the ball valve is controlled. Some ball valves have unclear switch indications, and the valve stem handle is easy to touch, resulting in the switch not being in place and the system not being smooth; and the ball valve will vibrate during use, and the vibration will cause the valve core to deviate from the position of the valve seat and cause the opening and closing state and sealing of the ball valve to change, thereby affecting the performance of the ball valve. Summary of the invention

[0003] To solve the problems raised in the above background technology. The utility model provides a ball valve, the handle is limited by the limit rod and the limit groove and the limit cylinder, the handle is connected to the valve body in a positioning manner to prevent the switch from being opened or closed in place due to contact and the system from being unsmooth; the upper end of the valve stem is connected to the handle through a limit block and a valve stem adjustment seat to prevent the ball valve from vibrating during use, causing the valve core to deviate from the position of the valve seat and causing the opening and closing state and sealing of the ball valve to change, thereby improving the performance of the ball valve.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ball valve, comprising a valve body, a valve core is provided in the inner cavity of the valve body, the top of the valve body is connected to a limiting cylinder, a valve stem is passed through the limiting cylinder, the bottom end of the valve stem passes through the inner cavity of the valve body and is connected to the valve core, the bottom of the limiting cylinder is connected to a first spring, a sealing gasket connected to the first spring and sealed to the limiting cylinder is sleeved on the valve stem, a handle is movably sleeved on the upper end of the valve stem, limiting rods are connected on both sides of the bottom end of the handle, limiting grooves that limit the limiting rods are opened at the top of the limiting cylinder, a valve stem adjusting seat is provided on the upper end of the valve stem, limiting blocks are connected on both sides of the valve stem adjusting seat, the limiting blocks are arranged in the limiting lifting grooves of the cavity at the top of the handle, the bottom of the valve stem adjusting seat is connected to the handle through a second spring; telescopic adjusting rods for limiting are provided at the bottom of both sides of the handle.

[0005] As a preferred solution, the top of the valve body is provided with positioning grooves in four directions of the limiting cylinder, the telescopic adjusting rod is provided with an adjusting screw, and the bottom end of the telescopic adjusting rod and the positioning groove are mutually limitedly plugged.

[0006] As a preferred solution, a sealing plug is provided at the top of the inner cavity of the valve body, and a sealing valve seat matched with the valve core is provided inside the valve body.

[0007] As a preferred solution, a valve stem cover is threadedly connected to the top of the valve stem.

[0008] As a preferred solution, connection interfaces are provided at both ends of the valve body.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The handle of the utility model is limited by a limit rod and a limit groove and a limit cylinder, and the handle is connected to the valve body in a positioning manner to prevent the switch from being opened or closed in place due to contact, thereby preventing the system from being unsmooth; the upper end of the valve stem is connected to the handle through a limit block and a valve stem adjustment seat to prevent the ball valve from vibrating during use so that the valve core deviates from the position of the valve seat and causes the opening and closing state and sealing of the ball valve to change. A sealing plug and a sealing gasket are provided to improve the performance of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a front view structural schematic diagram of the utility model;

[0013] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the isometric view of the AA surface;

[0014] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0015] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the isometric view of the BB surface.

[0016] Description of Figure Numbers:

[0017] 1. Valve body; 2. Limiting cylinder; 3. Valve stem; 4. Handle; 5. Valve stem adjustment seat; 6. Telescopic adjusting rod; 7. Valve stem cover; 8. Valve core; 9. Sealing valve seat; 11. Connecting interface; 12. Positioning groove; 13. Sealing plug; 21. Limiting groove; 22. Sealing gasket; 23. First spring; 41. Limiting rod; 51. Second spring; 52. Limiting block; 61. Adjusting screw. DETAILED DESCRIPTION

[0018] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0019] Example 1

[0020] See also Figure 1-5The utility model provides the following technical solutions: a ball valve, including a valve body 1, a valve core 8 is provided in the inner cavity of the valve body 1, a limiting cylinder 2 is connected to the top of the valve body 1, a valve stem 3 is inserted into the inner cavity of the limiting cylinder 2, the bottom of the valve stem 3 penetrates into the inner cavity of the valve body 1 and is connected to the valve core 8, a first spring 23 is connected to the bottom of the limiting cylinder 2, a sealing gasket 22 connected to the first spring 23 and sealed to the limiting cylinder 2 is sleeved on the valve stem 3, a handle 4 is movably sleeved on the upper end of the valve stem 3, limiting rods 41 are connected to both sides of the bottom end of the handle 4, and a limiting groove 21 is provided at the top of the limiting cylinder 2 to limit the limiting rod 41. A valve stem adjustment seat 5 is provided at the upper end of the valve stem 3, and limit blocks 52 are connected on both sides of the valve stem adjustment seat 5. The limit blocks 52 are arranged in the limit lifting groove 42 of the cavity at the top of the handle 4, and the bottom of the valve stem adjustment seat 5 is connected to the handle 4 through a second spring 51; telescopic adjustment rods 6 for limiting are provided at the bottom of both sides of the handle 4; positioning grooves 12 are opened on the top of the valve body 1 in four directions of the limit cylinder 2, and an adjusting screw 61 is provided on the telescopic adjustment rod 6, and the bottom end of the telescopic adjustment rod 6 and the positioning groove 12 are mutually limited and plugged; a sealing plug 13 is provided at the top of the inner cavity of the valve body 1, and a sealing plug 13 is provided inside the valve body 1 The valve core 8 is adapted to the sealing valve seat 9; the lower end of the telescopic adjustment rod 6 is adjusted to be out of the positioning groove 12 by adjusting the screw 61, and the handle 4 is pulled upward to compress the second spring 51. At the same time, the limit rods 41 on both sides of the bottom of the handle 4 move out of the limit groove 21 at the top of the limit cylinder 2. At this time, the handle 4 can be rotated through the valve stem adjustment seat 5 connected to the limit block 52 to drive the valve stem 3 to rotate and adjust. The handle 4 is rotated 90° or 180° as needed and then stopped. The handle 4 is released and the reaction force of the second spring 51 is pressed to move the handle 4 downward, so that the limit rods 4 on both sides of the bottom of the handle 4 1 is inserted into the limiting groove 21 of the limiting cylinder 2 for limiting, and the lower end of the telescopic adjustment rod 6 is telescopically extended to the positioning groove 12 for positioning; the handle 4 is limited by the limiting cylinder 2, and the handle 4 is positioned and connected with the valve body 1 to prevent the switch from being opened or closed in place due to contact, and the system is not smooth; the upper end of the valve stem 3 is connected with the handle 4 through the limiting block 52 and the valve stem adjustment seat 5 to prevent the ball valve from vibrating during use, causing the valve core to deviate from the position of the valve seat and causing the opening and closing state and sealing of the ball valve to change. The sealing plug 13 and the sealing gasket 22 are provided to improve the performance of the ball valve.

[0021] In this embodiment, a valve stem cover 7 is threadedly connected to the top of the valve stem 1 .

[0022] In this embodiment, connection interfaces 11 are provided at both ends of the valve body 1 .

[0023] Working principle and use process of the utility model: when the utility model is in use and the ball valve needs to be opened, the lower end of the telescopic adjustment rod 6 is adjusted to be out of the positioning of the positioning groove 12 by adjusting the screw 61, and the handle 4 is pulled upward to compress the second spring 51, and the limiting rods 41 on both sides of the bottom of the handle 4 move out of the limiting groove 21 at the top of the limiting cylinder 2. At this time, the handle 4 can be rotated to drive the valve stem 3 to rotate and adjust the valve stem 3 through the valve stem adjustment seat 5 connected to the limiting block 52. The handle 4 is rotated 90° or 180° as needed and then stopped. The handle 4 is released and the reaction force of the second spring 51 is applied to press the handle 4 to move downward, so that the limiting rods 41 on both sides of the bottom of the handle 4 are stuck in the limiting groove 21 of the limiting cylinder 2 for limiting, and the lower end of the telescopic adjustment rod 6 is telescopically extended to the positioning groove 12 for positioning;

[0024] The handle 4 is limited by the limit cylinder 2, and the handle 4 is positioned and connected to the valve body 1 to prevent the switch from being opened or closed in place due to contact, resulting in system obstruction. The upper end of the valve stem 3 is connected to the handle 4 through the limit block 52 and the valve stem adjustment seat 5 to prevent the ball valve from vibrating during use, causing the valve core to deviate from the position of the valve seat and causing the opening and closing state and sealing of the ball valve to change. The sealing plug 13 and the sealing gasket 22 are provided to improve the performance of the ball valve.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A ball valve, comprising a valve body (1), wherein a valve core (8) is provided in an inner cavity of the valve body (1), and characterized in that: The top of the valve body (1) is connected to a limiting cylinder (2), a valve stem (3) is inserted into the limiting cylinder (2), the bottom end of the valve stem (3) penetrates into the inner cavity of the valve body (1) and is connected to the valve core (8), the bottom of the limiting cylinder (2) is connected to a first spring (23), a sealing gasket (22) connected to the first spring (23) and sealed to the limiting cylinder (2) is sleeved on the valve stem (3), a handle (4) is movably sleeved on the upper end of the valve stem (3), and the limiting rods (4) are connected to both sides of the bottom end of the handle (4). 1), a limiting groove (21) is provided at the top end of the limiting cylinder (2) and is mutually limited with the limiting rod (41); a valve stem adjustment seat (5) is provided at the upper end of the valve stem (3); limiting blocks (52) are connected to both sides of the valve stem adjustment seat (5); the limiting blocks (52) are arranged in the limiting lifting groove (42) of the cavity at the top of the handle (4); the bottom of the valve stem adjustment seat (5) is connected to the handle (4) via a second spring (51); and telescopic adjustment rods (6) for limiting are provided at the bottom of both sides of the handle (4).

2. The ball valve according to claim 1, characterized in that: The top of the valve body (1) is provided with positioning grooves (12) in four directions of the limiting cylinder (2), the telescopic adjustment rod (6) is provided with an adjustment screw (61), and the bottom end of the telescopic adjustment rod (6) and the positioning groove (12) are mutually limitedly plugged.

3. The ball valve according to claim 1, characterized in that: A sealing plug (13) is provided at the top of the inner cavity of the valve body (1), and a sealing valve seat (9) matching the valve core (8) is provided inside the valve body (1).

4. The ball valve according to claim 1, characterized in that: The top of the valve stem (3) is threadedly connected with a valve stem cover (7).

5. The ball valve according to claim 1, characterized in that: Both ends of the valve body (1) are provided with connection interfaces (11).

Images