Spherical stop valve

Abstract

The utility model discloses a spherical stop valve which comprises a valve body, a connecting part integrally formed with the valve body, a valve cavity arranged on the valve body in a penetrating mode, a valve ball rotationally installed in the valve cavity and a valve rod rotationally installed in the connecting part, the top of the valve rod extends to the outer side of the connecting part, and a flat part is arranged at the top of the valve rod. A flat portion is arranged on the outer side of the valve rod, a handle is movably arranged on the outer side of the flat portion, a flat groove matched with the flat portion is formed in the handle in a penetrating mode, a rotating portion is arranged on the flat portion, and a spring is arranged on the outer side of the valve rod in a sleeved mode. The flat groove in the handle is located on the outer side of the rotating part all the time, and in the state, the handle cannot drive the valve rod to rotate, so that even if the handle is mistakenly touched to rotate, the valve rod cannot rotate, the opening and closing state of the valve cannot be changed, unnecessary fluid leakage is avoided, and safety is improved.

Description

Technical Field

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

[0002] A ball stop valve is a fluid control valve, which is mainly composed of a valve ball, valve body, valve stem, valve seat and handle. When in use, the valve stem is rotated by turning the handle, and the valve stem drives the valve ball to rotate to open or close the valve, thereby cutting off or connecting the pipeline fluid during the fluid transportation process.

[0003] The handle groove of the existing spherical stop valve is exposed and can be easily turned by accident, which can change the open and closed state of the valve and cause unnecessary fluid leakage, resulting in poor safety. Utility Model Content

[0004] The purpose of the present utility model is to provide a spherical stop valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spherical stop valve, comprising a valve body, a connecting part integrally formed with the valve body, a valve cavity provided through the valve body, a valve ball rotatably installed inside the valve cavity, and a valve stem rotatably installed inside the connecting part, the top of the valve stem extending to the outside of the connecting part, and a flat portion provided on the top of the valve stem, a handle movably provided on the outside of the flat portion, a flat groove adapted to the flat portion provided on the handle, a rotating part provided on the flat portion, and a spring sleeved on the outside of the valve stem.

[0006] As a preferred solution of the present invention, the top of the connecting portion is threadedly connected to a screw plug, one end of the spring is pressed against the inner side of the handle, and the other end of the spring is pressed against the inner side of the screw plug.

[0007] As a preferred solution of the present invention, a medium channel is provided through the middle of the valve ball, and an indicator mark is provided on the top of the flat portion.

[0008] As a preferred solution of the present invention, the top of the flat portion is threadedly connected with a nut.

[0009] As a preferred solution of the present invention, a transverse block is provided at the bottom of the valve stem, and a groove matching the transverse block is provided at the top of the valve ball.

[0010] As a preferred solution of the present invention, a sealing ring is installed between the valve body and the valve ball.

[0011] Compared with the prior art, the beneficial effect of the present invention is that the present invention applies an upward thrust to the handle through the provided spring, so that in the absence of external force, the flat groove on the handle is always on the outside of the rotating part. In this state, the handle cannot drive the valve stem to rotate. Therefore, even if the handle is accidentally touched and rotated, the valve stem cannot rotate, and the opening and closing state of the valve will not change, thereby avoiding unnecessary fluid leakage and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 For this utility model Figure 1 Exploded diagram;

[0016] Figure 5 This is a structural diagram of the valve stem of the utility model;

[0017] Figure 6 This is a schematic structural diagram of the handle of the utility model.

[0018] In the figure: 1. Valve body; 2. Connecting part; 3. Valve chamber; 4. Indicator mark; 5. Valve stem; 6. Nut; 7. Spring; 8. Plug; 9. Handle; 10. Valve ball; 11. Medium channel; 12. Sealing ring; 13. Flat part; 14. Rotating part; 15. Groove; 16. Cross block; 17. Flat groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1 to 6The utility model provides a technical solution: a ball stop valve, comprising a valve body 1, a connecting portion 2 integrally formed with the valve body 1, a valve cavity 3 penetrating the valve body 1, a valve ball 10 rotatably mounted inside the valve cavity 3, and a valve stem 5 rotatably mounted inside the connecting portion 2, the top of the valve stem 5 extending to the outside of the connecting portion 2, and a flat portion 13 is provided on the top of the valve stem 5, a handle 9 is movably provided on the outside of the flat portion 13, the handle 9 and the flat portion 13 can slide up and down, the handle 9 and the rotating portion 14 can rotate and slide up and down, a flat groove 17 adapted to the flat portion 13 is penetrated on the handle 9, and a rotating portion 14 is provided on the flat portion 13. 4. When the flat groove 17 on the handle 9 is outside the rotating part 14, the handle 9 cannot drive the valve stem 5 to rotate. Even if the handle 9 is accidentally touched and rotated, the valve stem 5 cannot rotate, and the opening and closing state of the valve will not change, avoiding unnecessary fluid leakage and improving safety. When the spring 7 on the handle 9 is outside the rotating part 14, the valve stem 5 can drive the valve stem 5 to rotate. The valve stem 5 rotates the valve ball 10 through the cross block 16, thereby changing the opening and closing state of the valve. The outer side of the valve stem 5 is provided with a spring 7, which is used to apply an upward thrust to the handle 9, so that the flat groove 17 on the handle 9 is always outside the rotating part 14 when there is no external force.

[0021] Among them, the top of the connecting part 2 is threadedly connected to a screw plug 8, one end of the spring 7 is tightly pressed against the inner side of the handle 9, and the other end of the spring 7 is tightly pressed against the inner side of the screw plug 8.

[0022] Among them, a medium channel 11 is provided through the middle of the valve ball 10, and an indicator mark 4 is provided on the top of the flat part 13. The indicating direction of the indicator mark 4 is the same as the flow direction of the medium channel 11. When the indicating direction of the indicator mark 4 is the same as the direction of the valve cavity 3, the medium channel 11 is connected with the valve cavity 3. At this time, the valve cavity 3 is conductive, which makes it convenient for the user to understand the opening and closing status of the valve.

[0023] The top of the flat portion 13 is threadedly connected to a nut 6 , which is used to limit the handle 9 to prevent the handle 9 from being separated from the valve stem 5 .

[0024] The bottom of the valve stem 5 is provided with a transverse block 16 , and the top of the valve ball 10 is provided with a groove 15 that matches the transverse block 16 . The transverse block 16 cooperates with the groove 15 to facilitate the valve stem 5 to drive the valve ball 10 to rotate.

[0025] A sealing ring 12 is installed between the valve body 1 and the valve ball 10 , and the sealing ring 12 is used to improve the sealing between the valve body 1 and the valve ball 10 .

[0026] Specifically, when the valve needs to be opened or closed, the handle 9 is pressed downward, the handle 9 compresses the spring 7, and the flat groove 17 on the handle 9 moves to the outside of the flat portion 13. At this time, the handle 9 is rotated, and the handle 9 cooperates with the flat portion 13 through the flat groove 17 to rotate the valve stem 5, and the valve stem 5 rotates the valve ball 10 through the cross block 16, thereby changing the opening and closing state of the valve. After the opening and closing state of the valve is adjusted, the handle 9 is released, and the spring 7 resets and bounces open to make the handle 9 move upward until the handle 9 is blocked by the nut 6. At this time, the flat groove 17 on the handle 9 is on the outside of the rotating portion 14. If the handle 9 is accidentally touched and rotated, the handle 9 cannot rotate the valve stem 5, and the opening and closing state of the valve will not change.

[0027] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0029] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0030] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spherical stop valve, comprising a valve body (1), a connecting portion (2) integrally formed with the valve body (1), a valve cavity (3) extending through the valve body (1), a valve ball (10) rotatably mounted inside the valve cavity (3), and a valve stem (5) rotatably mounted inside the connecting portion (2), characterized in that: The top of the valve stem (5) extends to the outside of the connecting portion (2), and a flat portion (13) is provided on the top of the valve stem (5). A handle (9) is movably provided on the outside of the flat portion (13). A flat groove (17) adapted to the flat portion (13) is passed through the handle (9). A rotating portion (14) is provided on the flat portion (13). A spring (7) is sleeved on the outside of the valve stem (5).

2. A spherical stop valve according to claim 1, characterized in that: The top of the connecting portion (2) is threadedly connected to a screw plug (8), one end of the spring (7) is pressed against the inner side of the handle (9), and the other end of the spring (7) is pressed against the inner side of the screw plug (8).

3. A spherical stop valve according to claim 1, characterized in that: A medium channel (11) is provided through the middle of the valve ball (10), and an indicator mark (4) is provided on the top of the flat portion (13).

4. A spherical stop valve according to claim 1, characterized in that: The top of the flat portion (13) is threadedly connected with a nut (6).

5. The spherical stop valve according to claim 1, characterized in that: A transverse block (16) is provided at the bottom of the valve stem (5), and a groove (15) matching with the transverse block (16) is provided at the top of the valve ball (10).

6. A spherical stop valve according to claim 1, characterized in that: A sealing ring (12) is installed between the valve body (1) and the valve ball (10).

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