Special device for locking throttle stop valve

Abstract

The utility model relates to the technical field of stop valves, and discloses a special valve locking device for a throttling stop valve, which solves the problem of poor use effect of the existing valve locking device for the throttling stop valve, and comprises a locking device body sleeved on the stop valve, an annular limiting clamping groove is formed in the arc-shaped outer surface of the stop valve cover, a plurality of first limiting clamping teeth are arranged in the annular limiting clamping groove, the locking device body is composed of a clamping assembly and a locking assembly, the annular limiting clamping groove is sleeved with the clamping assembly, the clamping assembly is connected with a hand wheel of the stop valve in an attached mode, and the locking assembly is connected to the clamping assembly in a penetrating mode. The clamping assembly is composed of a first clamp, a second clamp, a hinge shaft, a first limiting block, a second limiting block, a screw rod, a locking rotary knob, a first limiting arm and two second limiting arms. By means of the special locking device, the throttling stop valve can be stably locked, looseness is avoided, and operation convenience is improved.

Description

Technical Field

[0001] This utility model belongs to the field of gate valve technology, specifically a special device for locking a throttling gate valve. Background Technology

[0002] Throttling valves are commonly used valves in various pipelines. During normal production and operation, after the throttling valve forcibly seals and cuts off the pipelines before and after it, the handwheel of the throttling valve needs to be locked to prevent personnel from opening the valve due to negligence, which could cause production accidents or equipment and personnel safety accidents. Existing locking devices generally connect and lock the handwheel to the valve body through a chain. Although it has a locking function, the locking method has the disadvantage of poor stability. After locking, the handwheel still has a certain amount of room for movement, which can easily cause the throttling valve to not close completely, resulting in poor performance. Therefore, this application proposes a special locking device for throttling valves. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a special device for locking the valve of a throttling stop valve, which effectively solves the problem of poor performance of the existing valve locking devices for throttling stop valves.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a special device for locking a throttling shut-off valve, comprising a locking device body, which is sleeved on the shut-off valve. An annular limiting groove is formed on the arc-shaped outer surface of the shut-off valve cover, and several limiting teeth are arranged inside the annular limiting groove. The locking device body consists of a clamping component and a locking component. The clamping component is sleeved in the annular limiting groove and is fitted and connected to the handwheel of the shut-off valve. The locking component is inserted and connected to the clamping component. The clamping component consists of a first clamp, a second clamp, a hinge shaft, and a first limiting tooth. The system comprises a positioning block, a second limiting block, a screw, a locking knob, a first limiting arm, and two second limiting arms. One end of the first clamp and the second clamp are rotatably connected via a hinge shaft. The first limiting block is fixedly connected to the end of the first clamp away from the hinge shaft, and the second limiting block is fixedly connected to the end of the second clamp away from the hinge shaft. One end of the screw is rotatably connected to the second limiting block. The locking knob is sleeved on the screw and threadedly connected to it. The first limiting arm is fixedly connected to the middle position of the arc-shaped outer surface of the first clamp, and both second limiting arms are fixedly connected to the two ends of the arc-shaped outer surface of the second clamp.

[0005] Preferably, the inner surfaces of the first clamp and the second clamp are both fixedly provided with a second limiting tooth that matches the first limiting tooth, and the width of the first clamp and the second clamp is the same as the width of the annular limiting groove.

[0006] Preferably, the second limiting block is provided with an opening groove, and a support shaft is fixedly provided inside the opening groove. One end of the screw is sleeved on the support shaft and rotatably connected to the support shaft. The first limiting block is provided with a strip-shaped through groove that matches the screw.

[0007] Preferably, the screw has a limiting through hole that matches the locking assembly.

[0008] Preferably, the locking assembly consists of a lock body, a steel rope, and a locking rod. One end of the steel rope is fixedly connected to the lock body, the locking rod is fixedly connected to the other end of the steel rope, and the end of the locking rod away from the steel rope is inserted into the lock body.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] (1) In operation, by setting a clamping assembly consisting of a first clamp, a second clamp, a hinge shaft, a first limit block, a second limit block, a screw, a locking knob, a first limit arm and two second limit arms, the handwheel on the shut-off valve can be locked to a limit, preventing accidental opening by staff and causing safety accidents. By setting a locking assembly consisting of a lock body, a steel rope and a locking rod, the screw can be locked to a limit, further improving safety.

[0011] (2) By setting an annular limit slot, limit tooth one and limit tooth two, the clamping component can be rotated and adjusted without dead angle, so that the first limit arm and the two second limit arms can fit tightly with the inner support arm of the handwheel, thereby achieving a restrictive locking of the handwheel, preventing the handwheel from rotating significantly, and thus ensuring the stability of the shut-off valve closure. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] In the attached diagram:

[0014] Figure 1 This is a schematic diagram of the connection structure between the locking device body and the shut-off valve of this utility model;

[0015] Figure 2 This is a schematic diagram of the gate valve structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of the locking device of this utility model;

[0017] Figure 4 This is a schematic diagram of the clamping assembly structure of this utility model;

[0018] Figure 5 This utility model Figure 4 A magnified view of a portion of the image;

[0019] Figure 6 This is a schematic diagram of the locking component structure of this utility model;

[0020] In the diagram: 1. Locking device body; 2. Shut-off valve; 3. Annular limit groove; 4. Limiting tooth one; 5. Clamping assembly; 6. Locking assembly; 7. First clamp; 8. Second clamp; 9. Hinge shaft; 10. First limit block; 11. Second limit block; 12. Screw; 13. Locking knob; 14. First limit arm; 15. Second limit arm; 16. Limiting tooth two; 17. Opening groove; 18. Support shaft; 19. Strip through groove; 20. Limiting through hole; 21. Lock body; 22. Steel rope; 23. Locking rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Depend on Figures 1 to 5 This utility model discloses a valve locking device for a throttling shut-off valve, comprising a locking device body 1, which is fitted onto a shut-off valve 2. The valve cover of the shut-off valve 2 has an annular limiting groove 3 on its arc-shaped outer surface, and several limiting teeth 4 are provided inside the annular limiting groove 3. The locking device body 1 consists of a clamping component 5 and a locking assembly 6. The clamping component 5 is fitted onto the annular limiting groove 3 and is in contact with the handwheel of the shut-off valve 2. The locking assembly 6 is inserted and connected to the clamping component 5. The clamping component 5 consists of a first clamp 7, a second clamp 8, a hinge shaft 9, a first limiting block 10, a second limiting block 11, a screw 12, a locking knob 13, a first limiting arm 14, and two second limiting arms 15. The first clamp 7 and... One end of the second clamp 8 is rotatably connected via the hinge shaft 9. The first limiting block 10 is fixedly connected to the end of the first clamp 7 away from the hinge shaft 9. The second limiting block 11 is fixedly connected to the end of the second clamp 8 away from the hinge shaft 9. One end of the screw 12 is rotatably connected to the second limiting block 11. The locking knob 13 is sleeved on the screw 12 and threadedly connected to it. The first limiting arm 14 is fixedly connected to the middle position of the arc-shaped outer surface of the first clamp 7. Both second limiting arms 15 are fixedly connected to the two ends of the arc-shaped outer surface of the second clamp 8. The inner surfaces of the first clamp 7 and the second clamp 8 are both fixedly provided with limiting teeth 16 that match the limiting teeth 1 4. The width of the first clamp 7 and the second clamp 8 is the same as the width of the annular limiting groove 3.

[0023] When the shut-off valve 2 is closed, the first clamp 7 and the second clamp 8 are placed on the outer surface of the valve cover of the shut-off valve 2 and located inside the annular limiting groove 3. The first clamp 7 and the second clamp 8 are rotated and adjusted according to the position of the internal support arm of the handwheel of the shut-off valve 2 so that the first limiting arm 14 and the two second limiting arms 15 are in contact with the side of the internal support arm of the handwheel. Then the first clamp 7 and the second clamp 8 are completely closed so that the limiting tooth 1 4 and the limiting tooth 2 16 are engaged, thereby forming a limiting effect. At this time, the screw 12 is inserted into the first limiting block 10. Then the locking knob 13 is placed on the screw 12, and the locking assembly 6 is inserted into the screw 12 to limit the locking knob 13.

[0024] Depend on Figure 4 and Figure 5 The second limiting block 11 is provided with an opening groove 17, and a support shaft 18 is fixedly provided inside the opening groove 17. One end of the screw 12 is sleeved on the support shaft 18 and rotatably connected to the support shaft 18. The first limiting block 10 is provided with a strip-shaped through groove 19 that matches the screw 12.

[0025] The support shaft 18 can provide movable support for the screw 12, and the open slot 17 and the strip through slot 19 can be adapted to the screw 12 to improve the mobility of the screw 12;

[0026] Depend on Figure 3 , Figure 5 and Figure 6 As shown, the screw 12 has a limiting through hole 20 that matches the locking assembly 6. The locking assembly 6 consists of a lock body 21, a steel rope 22 and a locking rod 23. One end of the steel rope 22 is fixedly connected to the lock body 21, and the locking rod 23 is fixedly connected to the other end of the steel rope 22. The end of the locking rod 23 away from the steel rope 22 is inserted into the lock body 21.

[0027] The locking rod 23 is inserted into the limiting through hole 20, thereby driving the steel rope 22 to be inserted into the limiting through hole 20. Then the locking rod 23 is locked to the lock body 21, which can limit the locking knob 13.

[0028] During operation, by setting up a clamping assembly consisting of a first clamp, a second clamp, a hinge shaft, a first limit block, a second limit block, a screw, a locking knob, a first limit arm, and two second limit arms, the handwheel on the shut-off valve can be locked to a limit, preventing accidental opening by workers and causing safety accidents. By setting up a locking assembly consisting of a lock body, a steel rope, and a locking rod, the screw can be over-limited and locked, further improving safety. By setting up an annular limit groove, limit tooth one, and limit tooth two, the clamping assembly can be rotated and adjusted without dead angles, so that the first limit arm and the two second limit arms can fit tightly against the inner support arm of the handwheel, achieving a restrictive locking of the handwheel, preventing the handwheel from rotating too much, and thus ensuring the stability of the shut-off valve closure.

Claims

1. A valve locking device for a throttling shut-off valve, comprising a locking device body (1), characterized in that: The locking device body (1) is sleeved on the stop valve (2). The arc-shaped outer surface of the valve cover of the stop valve (2) is provided with an annular limiting groove (3). The annular limiting groove (3) is provided with several limiting teeth (4). The locking device body (1) is composed of a clamping component (5) and a locking component (6). The clamping component (5) is sleeved on the annular limiting groove (3) and is in close contact with the handwheel of the stop valve (2). The locking component (6) is inserted and connected to the clamping component (5). The clamping component (5) consists of a first clamp (7), a second clamp (8), a hinge shaft (9), a first limiting block (10), a second limiting block (11), a screw (12), a locking knob (13), and a first limiting... The arm (14) and two second limiting arms (15) are formed. One end of the first clamp (7) and the second clamp (8) are rotatably connected by the hinge shaft (9). The first limiting block (10) is fixedly connected to the end of the first clamp (7) away from the hinge shaft (9). The second limiting block (11) is fixedly connected to the end of the second clamp (8) away from the hinge shaft (9). One end of the screw (12) is rotatably connected to the second limiting block (11). The locking knob (13) is sleeved on the screw (12) and threadedly connected to it. The first limiting arm (14) is fixedly connected to the middle position of the arc-shaped outer surface of the first clamp (7). The two second limiting arms (15) are fixedly connected to both ends of the arc-shaped outer surface of the second clamp (8).

2. The valve locking device for the throttling shut-off valve according to claim 1, characterized in that: The inner surfaces of the first clamp (7) and the second clamp (8) are fixedly provided with a second limiting tooth (16) that matches the first limiting tooth (4). The width of the first clamp (7) and the second clamp (8) is the same as the width of the annular limiting groove (3).

3. The valve locking device for the throttling shut-off valve according to claim 1, characterized in that: The second limiting block (11) is provided with an opening groove (17), and a support shaft (18) is fixedly provided inside the opening groove (17). One end of the screw (12) is sleeved on the support shaft (18) and rotatably connected to the support shaft (18). The first limiting block (10) is provided with a strip-shaped through groove (19) that matches the screw (12).

4. The valve locking device for the throttling shut-off valve according to claim 1, characterized in that: The screw (12) is provided with a limiting through hole (20) that matches the locking assembly (6).

5. The valve locking device for the throttling shut-off valve according to claim 4, characterized in that: The locking assembly (6) consists of a lock body (21), a steel rope (22) and a locking rod (23). One end of the steel rope (22) is fixedly connected to the lock body (21), and the locking rod (23) is fixedly connected to the other end of the steel rope (22). The end of the locking rod (23) away from the steel rope (22) is plugged into the lock body (21).

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