Ball valve with anti-handle loosening

Abstract

This utility model relates to an anti-handle loosening ball valve. The anti-handle loosening ball valve of this utility model includes a valve body, a valve ball inside the valve body, a valve stem above the valve body, and a locking screw, a handle, a packing cap, and a sealing packing ring sequentially mounted on the valve stem from top to bottom. The locking screw and the handle are provided with anti-loosening positioning through holes, and a fixing pin passes through the anti-loosening positioning through holes to fix the locking screw and the handle.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve that prevents handle loosening. Background Technology

[0002] A ball valve is a type of valve that controls fluid flow by rotating a ball with a central hole. Its core features are rapid opening and closing, good sealing, and wide applicability. The ball valve's opening and closing element is the ball, which is rotated 90 degrees around its axis by the valve stem to achieve opening and closing. The valve opens when the ball's orifice is aligned with the fluid direction; when rotated 90 degrees and the orifice is perpendicular, it closes. This design requires only 1 / 4 turn, and the open / closed state can be visually determined by the handle position. It's important to note that ball valves are generally only recommended for fully open or fully closed applications. For example, the utility model patent CN222717503U designed an integrated ball valve, replacing the two-piece valve body structure with a single unit. However, in actual operation, due to the kinetic energy of the fluid, the ball valve is constantly vibrating, making the screws securing the handle prone to loosening and falling off. Accidental contact can also cause the handle to rotate, affecting the valve's normal opening or closing state and potentially leading to operational accidents. Therefore, improvements are urgently needed. Utility Model Content

[0003] The purpose of this utility model is to provide a ball valve that prevents the handle from loosening and can position the handle.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A ball valve for preventing handle loosening is provided, comprising: a valve body, a valve ball disposed inside the valve body, a valve stem disposed above the valve body, the bottom end of the valve stem being connected to the top end of the valve ball, and a locking screw, a handle, a packing cap, and a sealing packing ring sequentially mounted on the valve stem from top to bottom; the locking screw and the handle are provided with anti-loosening positioning through holes, and a fixing bolt passes through the anti-loosening positioning through holes to fix the locking screw and the handle.

[0005] Furthermore, the packing cap is provided with a positioning hole, and the fixing bolt passes through the anti-loosening positioning through hole on the locking screw and the handle, with its lower end inserted into the positioning hole.

[0006] Furthermore, the locking screw is provided with a through-hole 1 and a through-hole 2 for locking screw anti-loosening positioning, which are distributed at a 90° angle on the disc surface of the locking screw. The handle is provided with a through-hole 1 and a through-hole 2 for handle anti-loosening positioning, which correspond to the first locking screw anti-loosening positioning through-hole and the second locking screw anti-loosening positioning through-hole.

[0007] Furthermore, an upper washer is provided between the locking screw and the handle. The upper washer is provided with a through-hole and a second through-hole. The first through-hole corresponds to the first through-hole of the locking screw and the first through-hole of the handle. The second through-hole corresponds to the second through-hole of the locking screw and the second through-hole of the handle.

[0008] Furthermore, a lower washer is provided between the handle and the packing cap. The lower washer is provided with a through-hole and a second through-hole for anti-loosening positioning. The first through-hole corresponds to the first through-hole for anti-loosening positioning of the handle, and the second through-hole corresponds to the second through-hole for anti-loosening positioning of the handle.

[0009] Furthermore, the valve stem includes a torque section, a cylindrical sealing section, and a valve ball connecting section, wherein the torque section is located at the upper part of the valve stem, and a torque hole is provided on the handle, the cross-section of the torque hole and the cross-section of the torque section are both round-ended rectangles.

[0010] Furthermore, sealing seats are provided on both sides of the valve ball, and the sealing seats are fixed to the inner wall of the valve body.

[0011] Furthermore, valve caps are provided at both the left and right ends of the valve body, and sealing rings are provided inside the valve caps.

[0012] The beneficial effects of the anti-handle loosening ball valve provided by this utility model are as follows:

[0013] 1. Compared with existing technologies, most traditional ball valves lack a handle fastening screw anti-loosening structure. Because the fluid flowing through the ball valve has a certain kinetic energy, the ball valve will be in a state of high-frequency vibration during use. Without an anti-loosening structure, the handle is very likely to fall off. Existing anti-loosening structures are also prone to locking, making it impossible to repair and maintain the ball valve. The anti-loosening positioning through hole and fixing bolt matching structure of this utility model can effectively prevent the locking screw from loosening and facilitate disassembly and maintenance.

[0014] 2. Existing ball valves lack a locking structure for the handle position. Accidental touch of the handle during use can change the ball valve's open or closed state without the user's knowledge, potentially leading to serious safety risks. The fixed bolt with locking screw and the packing cap positioned on the handle provided by this utility model can lock the ball valve's open or closed state while preventing the fastening structure from loosening. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the overall structure of an anti-handle loosening ball valve provided for an embodiment of this utility model;

[0017] Figure 2 A top view of the handle structure provided in an embodiment of this utility model;

[0018] Figure 3 An exploded view of the handle structure provided in an embodiment of this utility model;

[0019] In the diagram: 1. Valve body; 2. Sealing seat; 3. Valve ball; 4. Connecting nut; 5. Sealing ring; 6. Valve stem; 61. Torque section; 62. Cylindrical sealing section; 63. Valve ball connecting section; 7. Packing cap; 71. Positioning hole; 8. Sealing packing ring; 9. Lower washer; 91. Lower washer anti-loosening positioning through hole one; 92. Lower washer anti-loosening positioning through hole two; 10. Handle; 101. Handle anti-loosening positioning through hole one; 102. Handle anti-loosening positioning through hole two; 103. Torque hole; 11. Upper washer; 111. Upper washer anti-loosening positioning through hole one; 112. Upper washer anti-loosening positioning through hole two; 12. Locking screw; 121. Locking screw anti-loosening positioning through hole one; 122. Locking screw anti-loosening positioning through hole two; 13. Fixing bolt. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this embodiment clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this embodiment and are not intended to limit this embodiment.

[0021] Please refer to the following: Figures 1 to 3The following describes a ball valve for preventing handle loosening provided in this embodiment. This embodiment of an anti-handle loosening ball valve includes a valve body 1, a valve ball 3 disposed inside the valve body 1, and a valve stem 6 disposed above the valve body 1. The bottom end of the valve stem 6 is connected to the top end of the valve ball 3. From top to bottom, a locking screw 12, a handle 10, a packing cap 7, and a sealing packing ring 8 are sequentially fitted onto the valve stem 6. Anti-loosening positioning through holes are provided on the locking screw 12 and the handle 10. A fixing bolt 13 is used to pass through the anti-loosening positioning through holes on the locking screw 12 and the handle 10 to lock the locking screw 12 and the handle 10. The fixing bolt 13 locks the position of the locking screw 12 and the handle 10, preventing the locking screw 12 from gradually loosening and disengaging due to high-frequency vibration during valve use. At the same time, the movable fixing bolt 13 can be easily removed. In some cases, such as when the sealing packing ring 8 needs to be replaced, it can be easily disassembled. In contrast, traditional anti-loosening structures are extremely difficult or even impossible to disassemble after locking, which is inconvenient for the repair and maintenance of the ball valve.

[0022] As one example, combined with Figures 1 to 3 As shown, a positioning hole 71 is provided on the packing cap 7. After the fixing bolt 13 passes through the locking screw 12 and the anti-loosening positioning through hole on the handle 10, its lower end is inserted into the positioning hole 71 to lock the valve's open and closed state, while also preventing the locking screw 12 and the packing cap 7 from loosening. In actual use, it is very common to accidentally touch the handle 10, which will cause the ball valve's passage or closed state to be changed without the user's knowledge. If the ball valve is used in a pipeline with serious safety risks, it may lead to serious consequences. Locking the ball valve's state is very important.

[0023] As one example, combined with Figures 1 to 3As shown, the locking screw 12 is provided with a through-hole 1 and a through-hole 2 for preventing loosening. These two through-holes are distributed at a 90° angle on the disc surface of the locking screw 12. The handle 10 is provided with a through-hole 1 and a through-hole 2 for preventing loosening. The through-hole 1 and the through-hole 12 overlap axially. The through-hole 1 and the through-hole 2 are also axially overlapping. During use, by adjusting the packing cap 7, the position of the ball valve corresponds to the axial overlap of the positioning hole 71 and the through-hole 12. When the ball valve is in the open state, the locking screw 12 anti-loosening positioning through hole one, the handle 10 anti-loosening positioning through hole one, and the positioning hole 71 overlap axially. At this time, the fixing pin 13 is used to pass through the above-mentioned through holes to fix the locking screw 12 and the handle 10 in the positioning hole 71, thereby locking the ball valve in the open state and preventing the locking screw 12 and the packing cap 7 from loosening. When the ball valve is in the closed state, the locking screw 12 anti-loosening positioning through hole two, the handle 10 anti-loosening positioning through hole two, and the positioning hole 71 overlap axially. At this time, the fixing pin 13 is used to pass through the above-mentioned through holes to fix the locking screw 12 and the handle 10 in the positioning hole 71, thereby locking the ball valve in the closed state and preventing the locking screw 12 and the packing cap 7 from loosening.

[0024] As one example, combined with Figures 1 to 3 As shown, an upper washer 11 is provided between the locking screw 12 and the handle 10 to prevent hard friction between the locking screw 12 and the handle 10. The upper washer 11 is provided with a through-hole 1 and a second through-hole 2. The first through-hole 1 of the upper washer 11 overlaps with the first through-hole 1 of the locking screw 12 and the first through-hole 1 of the handle 10 in the axial direction. The second through-hole 2 of the upper washer 11 overlaps with the second through-hole 2 of the locking screw 12 and the second through-hole 2 of the handle 10 in the axial direction.

[0025] As one example, combined with Figures 1 to 3 As shown, to prevent hard friction between the handle 10 and the packing cap 7, a lower washer 9 is provided between the handle 10 and the packing cap 7. The lower washer 9 has a through-hole 1 and a through-hole 2. The through-hole 1 of the lower washer 9 overlaps with the through-hole 1 of the handle 10 in the axial direction, and the through-hole 2 of the lower washer 9 overlaps with the through-hole 2 of the handle 10 in the axial direction.

[0026] As one example, combined with Figures 1 to 3As shown, the valve stem 6 includes a torque section 61, a cylindrical sealing section 62, and a valve ball 3 connecting section. The torque section 61 is located on the upper part of the valve stem 6. A torque hole 103 is provided on the handle 10. The cross-section of the torque hole 103 and the cross-section of the torque section 61 are both round-ended rectangles. In actual use, this mating structure is convenient for installation and also makes it easy to apply a torque to the valve stem 6 to drive the rotation of the valve ball 3.

[0027] As one example, combined with Figure 1 As shown, a sealing seat 2 is fixed on the inner wall of the valve body 1. The sealing seat 2 is symmetrically designed on both sides of the valve ball 3 to improve the sealing performance of the valve.

[0028] As one example, combined with Figure 1 As shown, valve caps are provided at both the left and right ends of the valve body 1 to facilitate the connection between the ball valve and the pipeline. A sealing ring 5 is provided inside the valve cap to ensure the sealing effect during connection.

[0029] The above description is only a preferred embodiment of this embodiment and is not intended to limit this embodiment. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this embodiment should be included within the protection scope of this embodiment.

Claims

1. A handle loose ball valve characterized by, The valve includes a valve body (1), inside which is a valve ball (3), and above the valve body (1) is a valve stem (6). The bottom end of the valve stem (6) is connected to the top end of the valve ball (3). From top to bottom, the valve stem (6) is fitted with a locking screw (12), a handle (10), a packing cap (7), and a sealing packing ring (8). The locking screw (12) and the handle (10) are provided with anti-loosening positioning through holes, and a fixing bolt (13) passes through the anti-loosening positioning through holes to fix the locking screw (12) and the handle (10).

2. A handle pull-out ball valve according to claim 1, characterized in that The packing cap (7) is provided with a positioning hole (71). The fixing bolt (13) passes through the locking screw (12) and the anti-loosening positioning through hole on the handle (10), and its lower end is inserted into the positioning hole (71).

3. A handle pull-out ball valve according to claim 2, wherein The locking screw (12) is provided with a through-hole 1 and a through-hole 2 for locking screw (12) to prevent loosening. The through-hole 1 and the through-hole 2 for locking screw (12) to prevent loosening are distributed at a 90° angle on the disc surface of the locking screw (12). The handle (10) is provided with a through-hole 1 and a through-hole 2 for handle (10) to prevent loosening. The through-hole 1 for locking screw (12) to prevent loosening is corresponding to the through-hole 1 for handle (10), and the through-hole 2 for locking screw (12) to prevent loosening is corresponding to the through-hole 2 for handle (10).

4. The anti-handle loosening ball valve according to claim 3, characterized in that, An upper washer (11) is provided between the locking screw (12) and the handle (10). The upper washer (11) is provided with a through-hole and a second through-hole. The first through-hole corresponds to the first through-hole of the locking screw (12) and the first through-hole of the handle (10). The second through-hole corresponds to the second through-hole of the locking screw (12) and the second through-hole of the handle (10).

5. A ball valve for preventing handle loosening according to claim 4, characterized in that, A lower washer (9) is provided between the handle (10) and the packing cap (7). The lower washer (9) is provided with a through-hole and a second through-hole. The first through-hole corresponds to the first through-hole of the handle (10), and the second through-hole corresponds to the second through-hole of the handle (10).

6. A ball valve for preventing handle loosening according to claim 3, characterized in that, The valve stem (6) includes a torque section (61), a cylindrical sealing section (62), and a valve ball (3) connecting section. The torque section (61) is located on the upper part of the valve stem (6), and a torque hole (103) is provided on the handle (10). The cross-section of the torque hole (103) and the cross-section of the torque section (61) are both round-ended rectangles.

7. A ball valve for preventing handle loosening according to claim 5, characterized in that, The valve ball (3) is provided with sealing seats (2) on both sides, and the sealing seats (2) are fixed to the inner wall of the valve body (1).

8. A ball valve for preventing handle loosening according to claim 7, characterized in that, The valve body (1) is provided with valve caps at both the left and right ends, and a sealing ring (5) is provided inside the valve cap.

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