Ball valve with anti-theft and self-locking functions

Abstract

The invention relates to the technical field of valves, in particular to an anti-theft self-locking ball valve which comprises a valve body, a hollow boss is installed on the outer surface of the valve body, a valve rod used for driving a valve element in the valve body to rotate is rotatably installed in the hollow boss, and an external thread is machined on the outer surface of the upper end of the valve rod. Two symmetrically-arranged flat openings are machined in the outer surface of the upper end of the valve rod, a handle is arranged on the upper side of the valve body, the valve rod is in threaded connection with a limiting nut used for limiting the position of the handle, a first blocking part and a second blocking part are installed on the outer surface of a hollow boss, and a bent part is fixedly connected to the end, close to the valve rod, of the handle. A supporting part is installed on the side, away from the first blocking part, of the valve body, a penetrating hole is formed in one end of the supporting part, and an anti-theft part used for preventing personnel from operating the handle at will is inserted in the penetrating hole. Compared with the prior art, the anti-theft self-locking valve has the following beneficial effects that the limiting nut is prevented from being disassembled at will, and the anti-theft self-locking effect is improved.

Description

Technical Field

[0001] The invention discloses a ball valve with anti-theft and self-locking functions, belonging to the technical field of valves. Background Art

[0002] The ball valve is a common type of valve, widely used in various fluid control systems. It controls the flow of fluid by rotating a ball with a hole. When the hole of the ball is aligned with the pipe, the fluid can pass freely; when the ball is rotated 90 degrees, the hole and the pipe are offset and the fluid is cut off. A handle is installed on the valve stem of the ball valve through a nut. The handle provides a driving torque for rotating the valve stem. In order to prevent people from arbitrarily stealing the ball valve, the valve body of the ball valve is often installed with locks and other limiters to limit the range of motion of the handle. However, the nut that limits the relative position of the handle and the valve stem is in an exposed state. The thief can directly twist the valve stem after removing the nut to operate, and the anti-theft self-locking effect is poor. Summary of the invention

[0003] In view of the shortcomings of the prior art, the object of the present invention is to provide a ball valve with anti-theft self-locking function to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a ball valve with anti-theft and self-locking, including a valve body, a hollow boss is installed on the outer surface of the valve body, a valve stem for driving the valve core in the valve body to rotate is rotatably installed in the hollow boss, an outer thread is processed on the outer surface of the upper end of the valve stem, two symmetrically arranged flat openings are processed on the outer surface of the upper end of the valve stem, a handle is provided on the upper side of the valve body, the handle is a "Z"-shaped structure, an oblong opening is processed on one end of the handle close to the valve body, and the end of the valve stem on the outer side of the hollow boss passes through the oblong opening, two The flat mouth is in contact with the two inner walls of the oblong mouth respectively, and a limit nut for limiting the position of the handle is threadedly connected to the valve stem. A first blocking part and a second blocking part are installed on the outer surface of the hollow boss, and the first blocking part and the second blocking part are arranged perpendicular to each other. A bent part is connected and fixed to one end of the handle close to the valve stem, and the bent part is arranged between the first blocking part and the second blocking part. A supporting part is installed on the side of the valve body away from the first blocking part, and a through hole is opened at one end of the supporting part, and an anti-theft part is inserted in the through hole to prevent people from arbitrarily operating the handle.

[0005] The lockhole that is formed on the upper surface of the lockhole is formed on the upper surface of the lockhole, and the lockhole engages with the lower surface of the lockhole to stop the lockhole.

[0006] Specifically, a thickening ring is provided on the lower side of the through hole, the thickening ring is sleeved on the column rod, and the thickening ring is arranged between the locking hole and the supporting part.

[0007] Specifically, an elastic washer is provided between the handle and the limiting nut, the elastic washer is sleeved on the valve stem, an adjusting nut is provided between the handle and the hollow boss, and the adjusting nut is threadedly connected to the valve stem.

[0008] Specifically, a first connection portion is connected and fixed to the middle position of the upper surface of the support portion, and the first connection portion is connected and fixed to the hollow boss.

[0009] Specifically, a baffle ring is sleeved on the outer side of the hollow boss and is arranged concentrically with the hollow boss. The first blocking portion, the second blocking portion and the bending portion are all in the baffle ring. A second connecting portion is installed on the side of the outer surface of the hollow boss away from the first blocking portion. The second connecting portion is connected and fixed to the baffle ring. An upper widened edge is installed on the upper surface of the baffle ring, and a lower widened edge is installed on the lower surface of the baffle ring. Both the upper widened edge and the lower widened edge are arc-shaped structures, and the upper widened edge and the lower widened edge are arranged along the moving path of the bending portion.

[0010] Specifically, a first convex ring portion connected and fixed to the valve body is connected to one end of the valve body, a second convex ring portion is welded to a side of the first convex ring portion facing away from the valve body, a first hexahedron is installed on a side of the second convex ring portion facing away from the first convex ring portion, and a first internal thread is processed on the inner surface of the first hexahedron, and a second hexahedron is installed on the end of the valve body away from the first convex ring portion, and a second internal thread is processed on the inner surface of the second hexahedron.

[0011] Specifically, a plastic sleeve is provided on one end of the handle away from the valve stem, and the plastic sleeve is adhered to the handle by glue.

[0012] Beneficial effects of the present invention:

[0013] 1. Insert the column into the through hole on the support part, and then insert the lock into the lock hole. At this time, the lock and the limit ring work together to keep the relative position of the column and the support part unchanged. Under the restriction of the column, the range of motion of the handle is limited, thereby preventing the thief from adjusting the position of the handle at will.

[0014] 2. When installing the column, a thickening ring is installed on the column so that the thickening ring is between the support part and the lock. Then, under the restriction of the thickening ring, the range of movement of the column is reduced.

[0015] 3. After the column rod is installed, make the two adjacent sides of the limit nut contact with the two inner walls of the V-shaped groove respectively, and then insert the upper end of the valve stem into the flat cavity. At this time, the two flat openings on the valve stem contact with the two parallel sides of the flat cavity. At this time, the positioning block and the shielding tube realize the limit shielding of the connection part between the limit nut and the valve stem to prevent the limit nut from being removed at will, thereby improving the anti-theft and self-locking effect.

[0016] 4. When the limit nut cannot smoothly engage with the V-groove after blocking the valve stem, adjust the relative position of the adjusting nut and the valve stem until the limit nut can smoothly engage with the V-groove, so as to adjust the installation position of the limit nut on the valve stem as needed while ensuring the stability of the handle installation.

[0017] 5. A shielding ring is mounted on the hollow boss to prevent personnel from damaging the curved portion on one end of the handle by destructive means. An upper widening edge and a lower widening edge are installed on the shielding ring to expand the shielding range of the curved portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 This is a structural schematic diagram of a ball valve with anti-theft self-locking function according to the present invention;

[0020] Figure 2 This is a three-dimensional view from another perspective of a ball valve with anti-theft self-locking function according to the present invention;

[0021] Figure 3 It is a schematic diagram of the assembly of a handle, a valve stem, a limit nut, a hollow boss, a support part and a valve body in a ball valve with anti-theft and self-locking function of the present invention;

[0022] Figure 4 It is a schematic assembly diagram of a handle, a valve stem, a limit nut, a hollow boss, a support part and a valve body in a ball valve with anti-theft self-locking function of the present invention from another perspective;

[0023] Figure 5 It is a schematic diagram of the assembly of a support plate, a positioning block, a limiting ring, a shielding tube and a column rod in a ball valve with anti-theft and self-locking function according to the present invention;

[0024] In the figure: 1. valve body, 2. first convex ring portion, 3. second convex ring portion, 4. first hexahedron, 5. shielding ring, 6. second connecting portion, 7. shielding tube, 8. connecting plate, 9. positioning block, 10. handle, 11. plastic sleeve, 12. supporting portion, 13. support plate, 14. second hexahedron, 15. column rod, 16. limiting ring, 17. lock, 18. limiting nut, 19. elastic gasket, 20. lower widened edge, 21. upper widened edge, 22. valve stem, 23. bending portion, 24. hollow boss, 25. first blocking portion, 26. V-groove, 27. first connecting portion, 28. perforation, 29. second blocking portion, 30. adjusting nut, 31. thickened ring, 32. lock hole, 33. flat cavity. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] See also Figure 1-Figure 4 The present invention provides a technical solution: a ball valve with anti-theft self-locking, comprising a valve body 1, a first convex ring portion 2 connected and fixed to the valve body 1 is connected at one end of the valve body 1, a second convex ring portion 3 is welded to the side of the first convex ring portion 2 facing away from the valve body 1, a first hexahedron 4 is installed on the side of the second convex ring portion 3 facing away from the first convex ring portion 2, and a first internal thread is processed on the inner surface of the first hexahedron 4, a second hexahedron 14 is installed on the end of the valve body 1 away from the first convex ring portion 2, and a second internal thread is processed on the inner surface of the second hexahedron 14, so that after the valve core is placed in the valve body 1, the first convex ring portion 2 and the second convex ring portion 3 are connected by welding to complete the assembly of the valve body 1 and the first hexahedron 4.

[0027] See also Figure 1-Figure 4A hollow boss 24 is installed on the outer surface of the valve body 1, and a valve stem 22 for driving the valve core in the valve body 1 to rotate is rotatably installed in the hollow boss 24. The outer surface of the upper end of the valve stem 22 is processed with an external thread, and the outer surface of the upper end of the valve stem 22 is processed with two symmetrically arranged flat openings. A handle 10 is provided on the upper side of the valve body 1. The handle 10 is a "Z"-shaped structure. An oblong opening is processed at one end of the handle 10 close to the valve body 1. The end of the valve stem 22 on the outer side of the hollow boss 24 passes through the oblong opening, and the two flat openings are respectively in contact with the two inner walls of the oblong opening. A limit nut 18 for limiting the position of the handle 10 is threadedly connected to the valve stem 22. The hollow boss 24 A first blocking portion 25 and a second blocking portion 29 are installed on the outer surface, and the first blocking portion 25 and the second blocking portion 29 are arranged perpendicular to each other. A bending portion 23 is connected and fixed to the end of the handle 10 close to the valve stem 22, and the bending portion 23 is arranged between the first blocking portion 25 and the second blocking portion 29. A plastic sleeve 11 is sleeved on the end of the handle 10 away from the valve stem 22, and the plastic sleeve 11 is adhered to the handle 10 by glue. When the handle 10 is rotated, the handle 10 drives the valve stem 22 to move. When the bending portion 23 contacts the first blocking portion 25, the ball valve is in a closed state, and when the bending portion 23 contacts the second blocking portion 29, the ball valve is in an open state.

[0028] See also Figure 1-Figure 5 The valve body 1 is provided with a support portion 12 on one side away from the first blocking portion 25. A first connecting portion 27 is connected and fixed to the middle of the upper surface of the support portion 12. The first connecting portion 27 is connected and fixed to the hollow boss 24. The first connecting portion 27 improves the stability of the connection between the support portion 12 and the valve body 1. A through hole 28 is provided at one end of the support portion 12. A column 15 for limiting the rotation range of the handle 10 is inserted in the through hole 28. A locking hole 32 is provided on the outer surface of the lower end of the column 15. A locking hole 32 is inserted in the locking hole 32. There is a lock 17, and a limiting ring 16 is provided on the upper side of the through hole 28. The limiting ring 16 is sleeved on the column 15 and connected and fixed to the column 15, so that the column 15 is inserted into the through hole 28 on the support part 12, and then the lock 17 is inserted into the lock hole 32. At this time, the lock 17 and the limiting ring 16 work together to keep the relative position of the column 15 and the support part 12 unchanged. Under the restriction of the column 15, the movable range of the handle 10 is limited, thereby preventing the thief from arbitrarily adjusting the position of the handle 10.

[0029] See also Figure 1-Figure 5The outer surface of the column 15 is connected and fixed with a support plate 13, and a positioning block 9 is installed on one side of the support plate 13. A V-shaped groove 26 matching with the limit nut 18 is opened on the side of the positioning block 9 away from the support plate 13, and two adjacent sides of the limit nut 18 are respectively in contact with the two inner walls in the V-shaped groove 26. The upper end of the column 15 is connected and fixed with a connecting plate 8, and a shielding tube 7 is installed on the end of the connecting plate 8 away from the column 15. The shielding tube 7 is arranged concentrically with the valve stem 22, and a flat cavity 33 is processed on the side of the shielding tube 7 away from the connecting plate 8. The two flat openings processed on the valve stem 22 are respectively It contacts the two inner walls of the flat cavity 33, and the lower end of the shielding tube 7 contacts the upper surface of the limit nut 18. After the column 15 is installed, the two adjacent side surfaces of the limit nut 18 are respectively in contact with the two inner walls of the V-shaped groove 26, and then the upper end of the valve stem 22 is inserted into the flat cavity 33. At this time, the two flat openings on the valve stem 22 are in contact with the two parallel side surfaces of the flat cavity 33. At this time, the positioning block 9 and the shielding tube 7 realize the limiting shielding of the connection part between the limit nut 18 and the valve stem 22 to prevent the limit nut 18 from being removed at will, thereby improving the anti-theft self-locking effect.

[0030] See also Figure 5 A thickening ring 31 is provided on the lower side of the through hole 28, and the thickening ring 31 is sleeved on the column 15. The thickening ring 31 is arranged between the lock hole 32 and the support part 12. When the column 15 is installed, the thickening ring 31 is sleeved on the column 15 so that the thickening ring 31 is between the support part 12 and the lock 17, and then under the restriction of the thickening ring 31, the range of movement of the column 15 is reduced.

[0031] See also Figure 2-Figure 4 An elastic washer 19 is provided between the handle 10 and the limit nut 18, and the elastic washer 19 is sleeved on the valve stem 22. An adjusting nut 30 is provided between the handle 10 and the hollow boss 24, and the adjusting nut 30 is threadedly connected to the valve stem 22. When the limit nut 18 and the valve stem 22 are blocked and cannot be smoothly engaged with the V-shaped groove 26, the relative position of the adjusting nut 30 and the valve stem 22 is adjusted until the limit nut 18 can be smoothly engaged with the V-shaped groove 26, so as to adjust the installation position of the limit nut 18 on the valve stem 22 as needed while ensuring the installation stability of the handle 10.

[0032] See also Figure 1 and Figure 2A baffle ring 5 concentrically arranged with the hollow boss 24 is sleeved on the outside of the hollow boss 24, the first blocking portion 25, the second blocking portion 29 and the bending portion 23 are all in the baffle ring 5, and a second connecting portion 6 is installed on the side of the outer surface of the hollow boss 24 away from the first blocking portion 25, the second connecting portion 6 is connected and fixed to the baffle ring 5, an upper widened edge 21 is installed on the upper surface of the baffle ring 5, and a lower widened edge 20 is installed on the lower surface of the baffle ring 5, both of which are arc-shaped structures, and the upper widened edge 21 and the lower widened edge 20 are arranged along the moving path of the bending portion 23.

[0033] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A ball valve with anti-theft self-locking function, comprising a valve body (1), characterized in that: The outer surface of the valve body (1) is provided with a hollow boss (24), and a valve stem (22) for driving the valve core in the valve body (1) to rotate is rotatably installed in the hollow boss (24). The outer surface of the upper end of the valve stem (22) is processed with an external thread, and the outer surface of the upper end of the valve stem (22) is processed with two symmetrically arranged flat openings. A handle (10) is provided on the upper side of the valve body (1), and the handle (10) is a "Z"-shaped structure. An elongated opening is processed at one end of the handle (10) close to the valve body (1). The end of the valve stem (22) located outside the hollow boss (24) passes through the elongated opening, and the two flat openings are respectively in contact with two inner walls of the elongated opening. A threaded connection for limiting the flow of the valve stem (22) is provided. A limit nut (18) is provided to control the position of the handle (10); a first blocking portion (25) and a second blocking portion (29) are installed on the outer surface of the hollow boss (24); the first blocking portion (25) and the second blocking portion (29) are arranged perpendicular to each other; a bending portion (23) is connected and fixed to one end of the handle (10) close to the valve stem (22); the bending portion (23) is arranged between the first blocking portion (25) and the second blocking portion (29); a support portion (12) is installed on the side of the valve body (1) away from the first blocking portion (25); a through hole (28) is provided at one end of the support portion (12); an anti-theft component for preventing personnel from arbitrarily operating the handle (10) is inserted in the through hole (28).

2. The ball valve with anti-theft self-locking function according to claim 1, characterized in that: The anti-theft component comprises a column (15), the column (15) for limiting the rotation range of the handle (10) is inserted in the through hole (28), a lock hole (32) is provided on the outer surface of the lower end of the column (15), a lock (17) is inserted in the lock hole (32), a limiting ring (16) is provided on the upper side of the through hole (28), the limiting ring (16) is sleeved on the column (15) and connected and fixed to the column (15), a support plate (13) is connected and fixed to the outer surface of the column (15), a positioning block (9) is installed on one side of the support plate (13), and a locking nut (17) is provided on the side of the positioning block (9) away from the support plate (13) (18) matches the V-shaped groove (26), the two adjacent side faces of the limit nut (18) are in contact with the two inner walls of the V-shaped groove (26), the upper end of the column rod (15) is connected and fixed with a connecting plate (8), the end of the connecting plate (8) away from the column rod (15) is installed with a shielding tube (7), the shielding tube (7) is arranged concentrically with the valve stem (22), and the side of the shielding tube (7) away from the connecting plate (8) is processed with a flat cavity (33), the two flat openings processed on the valve stem (22) are in contact with the two inner walls of the flat cavity (33), and the lower end of the shielding tube (7) is in contact with the upper surface of the limit nut (18).

3. The ball valve with anti-theft self-locking function according to claim 1, characterized in that: A thickening ring (31) is provided on the lower side of the through hole (28), and the thickening ring (31) is sleeved on the column rod (15). The thickening ring (31) is arranged between the locking hole (32) and the supporting part (12).

4. The ball valve with anti-theft self-locking function according to claim 1, characterized in that: An elastic washer (19) is provided between the handle (10) and the limiting nut (18), and the elastic washer (19) is sleeved on the valve stem (22). An adjusting nut (30) is provided between the handle (10) and the hollow boss (24), and the adjusting nut (30) is threadedly connected to the valve stem (22).

5. The ball valve with anti-theft self-locking function according to claim 1, characterized in that: A first connection portion (27) is connected and fixed at a middle position of the upper surface of the support portion (12), and the first connection portion (27) is connected and fixed to the hollow boss (24).

6. The ball valve with anti-theft self-locking function according to claim 1, characterized in that: The outer side of the hollow boss (24) is sleeved with a blocking ring (5) which is arranged concentrically with the hollow boss (24); the first blocking portion (25), the second blocking portion (29) and the curved portion (23) are all located in the blocking ring (5); a second connecting portion (6) is installed on the side of the outer surface of the hollow boss (24) which is away from the first blocking portion (25); the second connecting portion (6) is connected and fixed to the blocking ring (5); an upper widening edge (21) is installed on the upper surface of the blocking ring (5); and a lower widening edge (20) is installed on the lower surface of the blocking ring (5); the upper widening edge (21) and the lower widening edge (20) are both arc-shaped structures; and the upper widening edge (21) and the lower widening edge (20) are arranged along the moving path of the curved portion (23).

7. The ball valve with anti-theft self-locking function according to claim 1, characterized in that: One end of the valve body (1) is connected and fixed with a first convex ring portion (2) connected and fixed with the valve body (1); a second convex ring portion (3) is welded to a side of the first convex ring portion (2) facing away from the valve body (1); a first hexahedron (4) is installed on a side of the second convex ring portion (3) facing away from the first convex ring portion (2); a first internal thread is processed on an inner surface of the first hexahedron (4); a second hexahedron (14) is installed on an end of the valve body (1) away from the first convex ring portion (2); a second internal thread is processed on an inner surface of the second hexahedron (14).

8. The ball valve with anti-theft self-locking function according to claim 1, characterized in that: A plastic sleeve (11) is sleeved on one end of the handle (10) away from the valve stem (22), and the plastic sleeve (11) is adhered to the handle (10) by glue.

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