Valve ball and valve rod

Abstract

The utility model relates to the field of valve accessories, and discloses a valve ball and a valve rod, the valve rod is provided with an adjusting assembly, the adjusting assembly comprises a screw rod and an inserting block, the top wall of the valve rod is provided with a screw hole A, the bottom wall of an inserting strip is provided with a sliding groove communicated with the screw hole A, the screw rod is screwed into the screw hole A to be in threaded connection with the valve rod, and the inserting block is inserted into the sliding groove to be in sliding connection with the inserting strip. A groove A is formed in the bottom wall of the inserting groove, a groove B is formed in the bottom wall of the groove A, a groove C is formed in the bottom wall of the groove B, the width of the groove B is larger than that of the groove C and smaller than that of the groove A, and the inserting block is inserted into the groove C to be in contact connection with the ball body. According to the utility model, the sealing ring with gradually increased fatigue degree is extruded in a gradually increased manner, so that the sealing ring is utilized to the maximum extent, and the problems that the sealing ring is permanently deformed due to long-term excessive extrusion, the sealing effect is reduced, and a medium is easy to leak are solved.

Description

Technical Field

[0001] This utility model relates to the field of valve fittings, specifically to a valve ball and valve stem. Background Technology

[0002] A ball valve is a type of valve primarily used in pipelines for shut-off, distribution, and changing the flow direction of media. A ball valve typically consists of a valve body, a ball, and a stem. The ball is the valve's opening and closing element, and the stem drives the ball to rotate. The stem causes the ball to rotate around the valve's axis, thus opening and closing the valve to shut off, distribute, or change the flow direction of the media.

[0003] In existing floating ball valves, the ball floats. When the valve is closed, the ball can move to a certain extent under the pressure of the medium, pressing against the sealing ring at the outlet to complete the seal. However, during sealing, the entire load borne by the ball is transferred to the sealing ring, which can cause the sealing ring to be over-compressed. Under normal circumstances, moderate compression of the sealing ring is sufficient to complete the seal, and excessive compression is not necessary. Long-term excessive compression of the sealing ring will cause it to be permanently deformed, which will lead to a reduction in the sealing effect and make the medium prone to leakage. Utility Model Content

[0004] The purpose of this invention is to provide a valve ball and valve stem to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a valve ball and a valve stem, comprising a ball and a valve stem located above the ball. A slot is provided on the top wall of the ball, and an insert is fixedly provided below the valve stem. The insert is inserted into the slot and contacts the ball. An adjustment assembly is provided on the valve stem, the adjustment assembly comprising a screw and an insert block. A screw hole A is provided on the top wall of the valve stem, and a sliding groove communicating with the screw hole A is provided on the bottom wall of the insert. The screw is screwed into the screw hole A and threadedly connected to the valve stem. The insert block is inserted into the sliding groove and slidably connected to the insert. The bottom of the screw is rotatably connected to the insert block. A groove A is provided on the bottom wall of the slot, a groove B is provided on the bottom wall of the groove A, and a groove C is provided on the bottom wall of the groove B. The width of the groove B is greater than the width of the groove C and less than the width of the groove A. The insert block is inserted into the groove C and contacts the ball.

[0006] Preferably, a rotating column is fixedly disposed below the screw, and a turntable is fixedly disposed below the rotating column. The diameter of the turntable is larger than the diameter of the rotating column. A rotating groove matching the rotating column and the turntable is opened on the top wall of the insert block. The rotating column and the turntable are inserted into the rotating groove and rotatedly connected to the insert block.

[0007] Preferably, guide bars are fixedly provided on both the left and right sides of the insert block, and guide grooves are provided on both the left and right side walls of the slide groove. The guide bars are inserted into the guide grooves and slidably connected to the valve stem.

[0008] Preferably, the adjusting assembly further includes a fixing plate fixedly disposed on the front side of the screw and located above the valve stem, a screw, and a pointed cone fixedly disposed below the screw. The fixing plate has a screw hole B extending through it from top to bottom. After the screw is screwed into the screw hole B, the pointed cone is embedded in the valve stem and fixedly connected to the valve stem.

[0009] Preferably, the outer wall of the screw is provided with annular grooves A, B, and C. Annular groove A is located above annular groove B, annular groove B is located above annular groove C, the bottom wall of annular groove A is flush with the top wall of the valve stem, the distance between the bottom walls of annular groove A and annular groove B is equal to the distance between the bottom walls of annular groove B and annular groove C, and the distance between the bottom walls of annular groove B and annular groove C is equal to the distance between the bottom walls of annular groove A and annular groove B.

[0010] Preferably, a handle is fixedly provided above the valve stem.

[0011] Preferably, an anti-slip post is fixedly installed above the screw.

[0012] The beneficial effects of this utility model are as follows: When the ball is in the closed state, it moves under the pressure of the medium. After moving a certain distance, the ball comes into contact with the sealing ring. At this time, the insert block will abut against the side wall of the groove C, thereby limiting the movement distance of the ball and preventing the ball from excessively squeezing the sealing ring. When the sealing ring has been used for a period of time, its fatigue will increase and its elasticity will decrease. At this time, the original movement distance of the ball cannot completely squeeze and fit the sealing ring. The rotating screw drives the insert block to move upward, so that the insert block is located in the groove B and contacts the ball. Since the width of the groove B is greater than the width of the groove C, the movement distance of the ball will become longer, and the ball can... The sealing ring is further compressed to fit against the sphere. Since the width of groove A is greater than the width of groove B, the sphere's movement distance can be further increased, allowing the sphere to fully compress the sealing ring. In summary, this invention has the beneficial effects of avoiding excessive compression of the sealing ring by the sphere and adjusting the degree of compression. By gradually increasing the compression of the sealing ring as its fatigue level gradually increases, the sealing ring is maximized. This solves the problem that under normal circumstances, moderate compression of the sealing ring is sufficient for sealing, and excessive compression over a long period of time will cause permanent deformation of the sealing ring, leading to a reduction in sealing effect and easy leakage of the medium. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Appendix Figure 2 This is an exploded view of the present invention;

[0015] Appendix Figure 3 This is a top view of the present invention;

[0016] Appendix Figure 4 For the appendix Figure 3 Sectional view at point AA;

[0017] Appendix Figure 5 For the appendix Figure 4 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Ball; 2. Valve stem; 3. Slot; 4. Insert bar; 5. Screw; 6. Insert block; 7. Screw hole A; 8. Slide groove; 9. Groove A; 10. Groove B; 11. Groove C; 12. Guide bar; 13. Guide groove; 14. Fixing plate; 15. Screw; 16. Cone; 17. Screw hole B; 18. Annular groove A; 19. Annular groove B; 20. Annular groove C; 21. Handle; 22. Anti-slip post; 23. Rotating post; 24. Turntable; 25. Rotating groove. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] like Figure 1-4As shown, this utility model discloses a valve ball 1 and a valve stem 2, including a ball 1 and a valve stem 2 located above the ball 1. A slot 3 is provided on the top wall of the ball 1. An insert 4 is fixedly provided below the valve stem 2. The insert 4 is inserted into the slot 3 and contacts the ball 1. An adjustment component is provided on the valve stem 2. The adjustment component includes a screw 5 and an insert 6. A screw hole A7 is provided on the top wall of the valve stem 2. A sliding groove 8 communicating with the screw hole A7 is provided on the bottom wall of the insert 4. The screw 5 is screwed into the screw hole A7 and threadedly connected to the valve stem 2. The insert 6 is inserted into the sliding groove 8 and slidably connected to the insert 4. The bottom of the screw 5 is rotatably connected to the insert 6. A groove A9 is provided on the bottom wall of the slot 3. A groove B10 is provided on the bottom wall of the groove A9. A groove C11 is provided on the bottom wall of the groove B10. The width of the groove B10 is greater than the width of the groove C11 and less than the width of the groove A9. The insert 6 is inserted into the groove C11 and contacts the ball 1. In use, the screw 5 is screwed into the screw hole A7 and threaded to the valve stem 2. The insert 6 is inserted into the sliding groove 8 and slidably connected to the insert 4. The bottom of the screw 5 is rotatably connected to the insert 6. After the ball 1 and valve stem 2 are installed on the ball valve body, the insert 4 is inserted into the slot 3 and contacts the ball 1. The insert 6 is inserted into the groove C11 and contacts the ball 1. When the ball 1 is in the closed state, it will move under the pressure of the medium. After moving a certain distance, the ball 1 will fit against the sealing ring. At this time, the insert 6 will abut against the side wall of the groove C11, thereby limiting the movement distance of the ball 1 and preventing the ball 1 from excessively squeezing the sealing ring. When the sealing ring has been used for a period of time, its fatigue will increase and its elasticity will decrease. At this time, the original movement distance of the ball 1 cannot completely squeeze and fit the sealing ring. Rotating the screw 5 will drive the insert 6 to move upward. The movement causes the insert 6 to be positioned within the groove B10 and contact the ball 1. Since the width of groove B10 is greater than the width of groove C11, the movement distance of the ball 1 increases, allowing the ball 1 to further compress the sealing ring and ensure it adheres to the ball 1. Furthermore, since the width of groove A9 is greater than the width of groove B10, the movement distance of the ball 1 can be further increased, allowing the ball 1 to fully compress the sealing ring. In summary, this invention has the beneficial effects of preventing the ball 1 from excessively compressing the sealing ring and adjusting the degree of compression by the ball 1. By gradually increasing the compression on the sealing ring as its fatigue level gradually increases, the sealing ring is maximized, solving the problem that under normal circumstances, moderate compression of the sealing ring is sufficient for sealing, and excessive compression over a long period can cause permanent deformation, leading to reduced sealing performance and easy leakage of the medium.

[0021] Preferably, a rotating post 23 is fixedly disposed below the screw 5, and a turntable 24 is fixedly disposed below the rotating post 23. The diameter of the turntable 24 is larger than the diameter of the rotating post 23. A rotating groove 25 matching the rotating post 23 and the turntable 24 is formed on the top wall of the insertion block 6. The rotating post 23 and the turntable 24 are inserted into the rotating groove 25 and rotatably connected to the insertion block 6. Because the rotating post 23 and the turntable 24 are inserted into the rotating groove 25 and rotatably connected to the insertion block 6, it facilitates the rotation of the screw 5, thereby driving the insertion block 6 to move upward.

[0022] Preferably, guide bars 12 are fixedly provided on both the left and right sides of the insert block 6, and guide grooves 13 are provided on both the left and right side walls of the sliding groove 8. The guide bars 12 are inserted into the guide grooves 13 and slidably connected to the valve stem 2. Since the guide bars 12 are inserted into the guide grooves 13 and slidably connected to the valve stem 2, they serve to guide the insert block 6 when it moves.

[0023] Preferably, the adjusting assembly further includes a fixing plate 14 fixedly disposed on the front side of the screw 5 and located above the valve stem 2, a screw 15, and a pointed cone 16 fixedly disposed below the screw 15. The fixing plate 14 has a through-hole B17. After the screw 15 is screwed into the screw hole B17, the pointed cone 16 is embedded in the valve stem 2 and fixedly connected to the valve stem 2. The hardness of the pointed cone 16 is greater than that of the valve stem 2. Since the pointed cone 16 is embedded in the valve stem 2 and fixedly connected to the valve stem 2 after the screw 15 is screwed into the screw hole B17, it plays a role in preventing the screw 5 from rotating arbitrarily. When rotating the screw 5, the screw 15 must be loosened first.

[0024] Preferably, the outer wall of the screw 5 is provided with annular grooves A18, B19, and C20. Annular groove A18 is located above annular groove B19, and annular groove B19 is located above annular groove C20. The bottom wall of annular groove A18 is flush with the top wall of valve stem 2. The distance between the bottom walls of annular groove A18 and annular groove B19 is equal to the distance between the bottom walls of groove B10 and groove C11. The distance between the bottom walls of annular groove B19 and annular groove C20 is equal to the distance between the bottom walls of groove A9 and groove B10. Since the bottom wall of annular groove A18 is flush with the top wall of valve stem 2, the insert 6 is located in groove C11. Since the distance between the bottom walls of annular groove A18 and annular groove B19 and the distance between the bottom walls of groove B10 and groove C11 are equal, when the bottom wall of annular groove B19 is flush with the top wall of valve stem 2, the insert 6 is located in groove B10, which facilitates the determination of the movement position of the insert 6. The distance between the bottom walls of annular groove B19 and annular groove C20 and the distance between the bottom walls of groove A9 and groove B10 are equal. When the bottom wall of annular groove C20 is flush with the top wall of valve stem 2, the insert 6 is located in groove A9.

[0025] Preferably, a handle 21 is fixedly provided on the upper part of the valve stem 2. The handle 21 facilitates the rotation of the valve stem 2, thereby facilitating the rotation of the ball 1.

[0026] Preferably, an anti-slip post 22 is fixedly provided above the screw 5. The anti-slip post 22 facilitates the rotation of the screw 5.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve ball and valve stem, comprising a ball (1) and a valve stem (2) located above the ball (1), wherein a slot (3) is provided on the top wall of the ball (1), and an insert (4) is fixedly provided below the valve stem (2), the insert (4) being inserted into the slot (3) and contacting the ball (1), characterized in that: The valve stem (2) is provided with an adjustment component, which includes a screw (5) and a plug (6). The top wall of the valve stem (2) is provided with a screw hole A (7). The bottom wall of the plug (4) is provided with a sliding groove (8) that communicates with the screw hole A (7). The screw (5) is screwed into the screw hole A (7) and threadedly connected to the valve stem (2). The plug (6) is inserted into the sliding groove (8) and slidably connected to the plug (4). The bottom of the screw (5) is rotatably connected to the plug (6). The bottom wall of the slot (3) is provided with a groove A (9). The bottom wall of the groove A (9) is provided with a groove B (10). The bottom wall of the groove B (10) is provided with a groove C (11). The width of the groove B (10) is greater than the width of the groove C (11) and less than the width of the groove A (9). The plug (6) is inserted into the groove C (11) and contacts the ball (1).

2. The valve ball and valve stem according to claim 1, characterized in that: A rotating column (23) is fixedly installed below the screw (5), and a turntable (24) is fixedly installed below the rotating column (23). The diameter of the turntable (24) is larger than the diameter of the rotating column (23). A rotating groove (25) matching the rotating column (23) and the turntable (24) is opened on the top wall of the insert (6). The rotating column (23) and the turntable (24) are inserted into the rotating groove (25) and rotatedly connected to the insert (6).

3. The valve ball and valve stem according to claim 1, characterized in that: Guide bars (12) are fixedly installed on both the left and right sides of the insert (6), and guide grooves (13) are opened on both the left and right side walls of the slide groove (8). The guide bars (12) are inserted into the guide grooves (13) and slidably connected to the valve stem (2).

4. The valve ball and valve stem according to claim 1, characterized in that: The adjustment assembly also includes a fixing plate (14) fixedly disposed on the front side of the screw (5) and above the valve stem (2), a screw (15), and a pointed cone (16) fixedly disposed below the screw (15). The fixing plate (14) has a screw hole B (17) through it. After the screw (15) is screwed into the screw hole B (17), the pointed cone (16) is embedded in the valve stem (2) and fixedly connected to the valve stem (2).

5. A valve ball and valve stem according to claim 1, characterized in that: The outer wall of the screw (5) is provided with annular grooves A (18), B (19) and C (20). Annular groove A (18) is located above annular groove B (19), and annular groove B (19) is located above annular groove C (20). The bottom wall of annular groove A (18) is flush with the top wall of valve stem (2). The distance between the bottom walls of annular groove A (18) and annular groove B (19) is equal to the distance between the bottom walls of groove B (10) and groove C (11). The distance between the bottom walls of annular groove B (19) and annular groove C (20) is equal to the distance between the bottom walls of groove A (9) and groove B (10).

6. The valve ball and valve stem according to claim 1, characterized in that: A handle (21) is fixedly installed above the valve stem (2).

7. A valve ball and valve stem according to claim 1, characterized in that: An anti-slip post (22) is fixedly installed above the screw (5).

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