Valve rod mechanism for preventing valve handle from loosening

Abstract

The valve rod mechanism capable of preventing the valve handle from loosening comprises the handle and a valve rod, and the handle and the valve rod are connected in a clamped mode through a connecting part. A through hole penetrating through the two side faces is formed in the valve rod. The connecting part comprises a screw inserted into the through hole, a spring wrapping the screw and a ball arranged at the position, at the bottom of the screw, in the through hole. The handle is correspondingly provided with a concave face matched with the ball, reliable connection of the valve rod and the handle is guaranteed, looseness is prevented, meanwhile, the handle is convenient to disassemble, and cost waste caused by the fact that the whole valve needs to be replaced due to failure of a connecting mechanism is avoided.

Description

Technical Field

[0001] The present application relates to a valve stem mechanism for preventing a valve handle from loosening, and belongs to the field of valve stems. Background Art

[0002] A ball valve is a valve in which the ball is driven by a stem and rotates around its axis. It can also be used for regulating and controlling fluids. The hard-sealed V-shaped ball valve, with its V-shaped core and carbide-clad metal seat, creates strong shear forces, making it particularly suitable for media containing fibers and fine solid particles. Multi-way ball valves, on the other hand, not only flexibly control the confluence, diversion, and direction of media in pipelines, but also allow any channel to be closed while connecting the other two. This type of valve should generally be installed horizontally in pipelines. Ball valves are categorized by actuation method as pneumatic, electric, and manual.

[0003] Most existing ball valve handles are not designed with a handle anti-loosening mechanism or are designed with a thread plus gasket anti-loosening form; the lack of an anti-loosening mechanism will cause the handle to fall off easily, and the thread plus gasket structure will be damaged after repeated use, causing the anti-loosening failure. Utility Model Content

[0004] According to one aspect of the present application, a valve stem mechanism for preventing a valve handle from loosening is provided, comprising a handle and a valve stem, wherein the handle and the valve stem are clamped together by a connecting portion;

[0005] The valve stem is provided with through holes penetrating the two side surfaces;

[0006] The connecting portion includes a screw inserted into the through hole, a spring wrapped around the outside of the screw, and a round ball arranged at the bottom of the screw in the through hole;

[0007] The handle is correspondingly provided with a concave surface adapted to the ball.

[0008] The ball is clamped at one end of the through hole by a screw wrapped with a spring. At the same time, part of the spherical surface protrudes to the outside of the through hole, adapting to the concave surface opened on the handle and clamped in the concave surface to achieve anti-loosening fixation.

[0009] Optionally, the two side surfaces of the valve stem are configured as planes, and are provided with through holes penetrating the two side surfaces.

[0010] Optionally, the diameter of one end of the through hole is larger than that of the ball, and the diameter of the other end is smaller than that of the ball. The ball is arranged at the end with the smaller diameter to ensure that the ball is stuck in the through hole and does not fall out.

[0011] Optionally, the ball is fixed to the bottom of the screw.

[0012] Optionally, the round balls are steel balls.

[0013] Optionally, the through hole is a countersunk hole, and the screw is a countersunk screw.

[0014] The beneficial effects of this application include:

[0015] The valve stem mechanism provided in the present application prevents the valve handle from loosening, ensures a reliable connection between the valve stem and the handle, prevents loosening, and is easy to disassemble. The entire valve does not need to be replaced due to failure of the connection mechanism, which causes cost waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the connection state structure of a valve stem mechanism for preventing a valve handle from loosening provided in one embodiment of the present application.

[0017] List of parts and reference numerals:

[0018] 1. Valve stem; 2. Through hole; 3. Screw; 4. Spring; 5. Ballpoint; 6. Handle; 7. Concave surface. DETAILED DESCRIPTION

[0019] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0020] According to one embodiment of the present application, a valve stem mechanism for preventing a valve handle from loosening is provided, comprising a handle 6 and a valve stem 1, wherein the handle 6 and the valve stem 1 are clamped together via a connecting portion;

[0021] The two side surfaces of the valve stem 1 are set to be flat, and a through hole 2 is opened through the two side surfaces;

[0022] The connecting portion includes a screw 3 inserted into the through hole 2, a spring 4 wrapped around the outside of the screw 3, and a ball 5 arranged at the bottom of the screw 3 in the through hole 2;

[0023] The round ball 5 is a steel ball;

[0024] The diameter of one end of the through hole 2 is larger than the ball 5, and the diameter of the other end is smaller than the ball 5. The ball 5 is arranged at the end with the smaller diameter to ensure that the ball 5 is stuck in the through hole 2 and does not fall out.

[0025] The handle 6 is provided with a concave surface 7 corresponding to the ball 5 .

[0026] The ball 5 is clamped at one end of the through hole 2 by the screw 3 wrapped with the spring 4. At the same time, part of the spherical surface protrudes outside the through hole 2, adapting to the concave surface 7 opened on the handle 6 and clamped in the concave surface 7 to achieve anti-loosening fixation.

[0027] The above description is only a partial embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application discloses the preferred embodiments as above, it is not intended to limit the present application. Any technical personnel familiar with this profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A valve stem mechanism for preventing a valve handle from loosening, characterized in that: It comprises a handle and a valve stem, wherein the handle and the valve stem are clamped together through a connecting portion; The valve stem is provided with through holes penetrating the two side surfaces; The connecting portion includes a screw inserted into the through hole, a spring wrapped around the outside of the screw, and a round ball arranged at the bottom of the screw in the through hole; The handle is correspondingly provided with a concave surface adapted to the ball.

2. A valve stem mechanism for preventing a valve handle from loosening according to claim 1, characterized in that: The two side surfaces of the valve stem are arranged as planes, and are provided with through holes penetrating the two side surfaces.

3. A valve stem mechanism for preventing a valve handle from loosening according to claim 2, characterized in that: The ball is fixed to the bottom of the screw.

4. A valve stem mechanism for preventing a valve handle from loosening according to claim 2, characterized in that: The diameter of one end of the through hole is larger than that of the ball, and the diameter of the other end is smaller than that of the ball, and the ball is arranged at the end with the smaller diameter.

5. A valve stem mechanism for preventing a valve handle from loosening according to claim 3 or 4, characterized in that: The round balls are steel balls.

6. A valve stem mechanism for preventing a valve handle from loosening according to claim 5, characterized in that: The through hole is a countersunk hole, and the screw is a countersunk screw.

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