A stop valve provided with a protection structure

Abstract

The utility model relates to the technical field of stop valve, concretely is a kind of stop valve with protective structure, it includes: stop valve body, the stop valve body includes valve body, adjusting screw is inserted in the inside of valve body top end, the control ring is provided at the top end of adjusting screw;The outer surface of the top end of adjusting screw is rotatably connected with protective structure, and the protective structure includes threaded tube, and the top end of threaded tube is connected with positioning frame.The utility model is rotated by the angle of limiting screw sleeve, limiting screw sleeve is rotatably connected on the outer surface of fixed ring, then nut is rotatably connected on the outer surface of fixed screw one end, to limit threaded tube, realize the thread of the inner surface of threaded tube and be used for locking adjusting screw, and threaded tube can be replaced after the thread wear of threaded tube, avoid the thread wear of the inner surface of valve body, easily cause the valve body switch to appear loose, cause the problem of the medium leakage in valve body.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a gate valve with a protective structure. Background Technology

[0002] The core function of a gate valve is to cut off or connect the flow of media in a pipeline. Its forced sealing structure achieves reliable shut-off through the tight fit between the valve and the valve seat. The gate valve drives the valve disc to forcefully press the valve seat through the valve stem, forming a complete seal. It can block the transmission path of liquids, gases and other fluids, making it widely used in scenarios such as water supply system maintenance and chemical production safety isolation.

[0003] When using existing gate valves, their function is to cut off or connect the flow of media in the pipeline. Existing gate valves use a control ring to drive the adjusting screw to rotate, thereby controlling the opening and closing of the gate valve. However, after the threads on the inner surface of the valve body wear, the valve body opening and closing can easily become loose, leading to the problem of internal media leakage. Utility Model Content

[0004] The purpose of this utility model is to provide a gate valve with a protective structure to solve the problem mentioned in the background art that the existing gate valve uses a control ring to drive the adjusting screw to rotate, thereby controlling the opening and closing of the gate valve. However, after the threads on the inner surface of the valve body wear, the valve body opening and closing is easily loosened, resulting in leakage of the medium inside the valve body.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stop valve with a protective structure, comprising:

[0006] The shut-off valve body includes a valve body, an adjusting screw is inserted inside the top of the valve body, and a control ring is provided at the top of the adjusting screw;

[0007] The outer surface of the top end of the adjusting screw is rotatably connected to a protective structure, the protective structure including a threaded tube, the top end of the threaded tube is connected to a positioning frame, the inner surface of the positioning frame is connected to two sides of an arc-shaped sliding plate, the outer wall of the arc-shaped sliding plate is fitted with a limiting screw sleeve, the inside of the limiting screw sleeve is rotatably connected to a fixing ring, the surface of the fixing ring is connected to a fixing screw, and one end of the fixing screw is rotatably connected to a nut.

[0008] Preferably, the retaining ring is connected to the top surface of the valve body, and both the inner and outer surfaces of the retaining ring are provided with threads. The inner surface of the threaded tube is provided with threads, and the threaded tube and the adjusting screw are rotatably connected by threads.

[0009] Preferably, the inner surface of the limiting screw sleeve is provided with threads, and the limiting screw sleeve and the fixing ring are rotatably connected by the threads. The outer surface of the limiting screw sleeve is provided with an annular groove, and the arc-shaped sliding plate is inserted into the annular groove of the limiting screw sleeve and slidably connected with the limiting screw sleeve.

[0010] Preferably, a groove is provided on one side of the top end of the fixing ring, and the fixing screw is inserted into the groove of the fixing ring. The fixing screw and the nut are rotatably connected by a thread.

[0011] Preferably, a limiting structure is inserted inside the top of the control ring. The limiting structure includes a limiting screw, and a fixed support is rotatably connected to the outer surface of the bottom end of the limiting screw. Positioning blocks are connected to both sides of the fixed support, and rubber pads are provided on both sides of the top of the fixed support.

[0012] Preferably, the fixed support is connected to the top surface of the adjusting screw, the bottom surface of the control ring is provided with a positioning groove, the fixed support and the positioning block are inserted into the positioning groove of the control ring, and the rubber pad is filled between the control ring and the fixed support for buffering.

[0013] Preferably, a through hole is provided on one side of the inner wall of the positioning groove of the control ring, a threaded groove is provided on the top surface of the fixed support, and the bottom end of the limiting screw passes through the through hole of the control ring and is rotatably connected to the inside of the threaded groove of the fixed support.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By rotating the angle of the limiting screw sleeve, the limiting screw sleeve is rotatably connected to the outer surface of the fixed ring. The arc-shaped sliding plate positions the limiting screw sleeve while ensuring that the rotation of the limiting screw sleeve does not affect the angle of the positioning frame. This allows the threaded tube to be inserted into the fixed ring, and the fixing screw connected to the surface of the threaded tube is inserted into the groove opened in the fixed ring. Then, the nut is rotated and connected to the outer surface of one end of the fixing screw, thereby limiting the threaded tube. This achieves locking of the adjusting screw by using the thread set on the inner surface of the threaded tube. The threaded tube can be replaced after the thread wears out, avoiding the problem of valve body opening and closing loosening and leakage of internal medium caused by the wear of the thread set on the inner surface of the valve body.

[0016] 2. By fitting the fixed support and positioning block into the positioning groove of the control ring, the rubber pad is filled between the control ring and the fixed support for buffering, thus enabling flexible contact between the control ring and the fixed support. Then, the bottom end of the limiting screw is passed through the through hole of the control ring and rotated into the threaded groove of the fixed support to limit the control ring, thereby achieving the limiting effect between the adjusting screw and the control ring. This allows the threaded tube to be replaced after the control ring is disassembled. Attached Figure Description

[0017] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0018] Figure 2 This is a three-dimensional sectional view of the structure of this utility model.

[0019] Figure 3 This is a partial cross-sectional perspective view of the structure of this utility model.

[0020] Figure 4 This utility model Figure 3 Enlarged 3D structural diagram at point A;

[0021] Figure 5 This is a top view and partial cross-sectional perspective of the structure of this utility model.

[0022] In the diagram: 1. Gate valve body; 11. Valve body; 12. Adjusting screw; 13. Control ring; 2. Protective structure; 21. Threaded pipe; 22. Positioning bracket; 23. Arc-shaped sliding plate; 24. Limiting screw sleeve; 25. Fixing ring; 26. Fixing screw; 27. Nut; 3. Limiting structure; 31. Limiting screw; 32. Fixing support; 33. Positioning block; 34. Rubber pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 One embodiment provided by this utility model:

[0025] A shut-off valve with a protective structure includes:

[0026] The shut-off valve body 1 includes a valve body 11. An adjusting screw 12 is inserted inside the top of the valve body 11. A control ring 13 is provided at the top of the adjusting screw 12. The internal material of the control ring 13 is existing technology and can be purchased on the market. It is not considered as a technical protection point of this application. Therefore, no further details are made.

[0027] A protective structure 2 is rotatably connected to the outer surface of the top end of the adjusting screw 12. The protective structure 2 includes a threaded tube 21. A positioning frame 22 is connected to the top end of the threaded tube 21. Arc-shaped sliding plates 23 are connected to both sides of the inner surface of the positioning frame 22. A limiting screw sleeve 24 is sleeved on the outer wall of the arc-shaped sliding plate 23. A fixing ring 25 is rotatably connected inside the limiting screw sleeve 24. A fixing screw 26 is connected to the surface of the fixing ring 25. A nut 27 is rotatably connected to the outer surface of one end of the fixing screw 26.

[0028] Furthermore, the retaining ring 25 is connected to the top surface of the valve body 11. The inner and outer surfaces of the retaining ring 25 are both threaded, and the inner surface of the threaded tube 21 is also threaded. The threaded tube 21 and the adjusting screw 12 are rotatably connected by the thread, thereby connecting and fixing the threaded tube 21 and the adjusting screw 12 through the thread, thus locking the adjusting screw 12.

[0029] Furthermore, the inner surface of the limiting screw sleeve 24 is provided with threads, and the limiting screw sleeve 24 and the fixing ring 25 are rotatably connected by the threads. The outer surface of the limiting screw sleeve 24 is provided with an annular groove, and the arc-shaped sliding plate 23 is inserted into the annular groove of the limiting screw sleeve 24 and slidably connected with the limiting screw sleeve 24, so as to realize the positioning function of the arc-shaped sliding plate 23 through the annular groove of the limiting screw sleeve 24.

[0030] Furthermore, a groove is provided on one side of the top end of the fixing ring 25, and the fixing screw 26 is inserted into the groove of the fixing ring 25. The fixing screw 26 and the nut 27 are connected by a thread, so as to fix the fixing screw 26 and the nut 27 by the thread, thereby restricting the position of the threaded tube 21 and locking the position of the limiting screw sleeve 24.

[0031] Furthermore, a limiting structure 3 is inserted inside the top of the control ring 13. The limiting structure 3 includes a limiting screw 31. A fixed support 32 is rotatably connected to the outer surface of the bottom end of the limiting screw 31. Positioning blocks 33 are connected to both sides of the fixed support 32. Rubber pads 34 are provided on both sides of the top of the fixed support 32 to achieve the limiting effect between the adjusting screw 12 and the control ring 13, so that the threaded tube 21 can be replaced after the control ring 13 is disassembled.

[0032] Furthermore, the fixed support 32 is connected to the top surface of the adjusting screw 12, and the bottom surface of the control ring 13 is provided with a positioning groove. The fixed support 32 and the positioning block 33 are inserted into the positioning groove of the control ring 13. The rubber pad 34 is filled between the control ring 13 and the fixed support 32 for buffering, so as to achieve flexible contact between the control ring 13 and the fixed support 32 through the rubber pad 34.

[0033] Furthermore, a through hole is provided on one side of the positioning groove of the control ring 13, and a threaded groove is provided on the top surface of the fixed support 32. The bottom end of the limiting screw 31 passes through the through hole of the control ring 13 and is rotatably connected to the inside of the threaded groove of the fixed support 32, so as to limit the bottom end of the limiting screw 31 through the threaded groove of the fixed support 32, thereby limiting the control ring 13.

[0034] Working principle: When the shut-off valve is protected, the angle of the limiting sleeving 24 is rotated, so that the limiting sleeving 24 is rotatably connected to the outer surface of the fixing ring 25. The arc-shaped sliding plate 23 is used to position the limiting sleeving 24, so that the rotation of the limiting sleeving 24 does not affect the angle of the positioning frame 22. The threaded tube 21 is then inserted into the inside of the fixing ring 25, and the fixing screw 26 connected to the surface of the threaded tube 21 is inserted into the groove opened in the fixing ring 25. Then, the nut 27 is rotatably connected to the outer surface of one end of the fixing screw 26, thereby limiting the threaded tube 21. The threaded tube 21 is locked to the adjusting screw 12 by the thread set on the inner surface of the threaded tube 21, and the threaded tube 21 can be replaced after the thread of the threaded tube 21 wears.

[0035] When limiting the stop valve with a protective structure, the fixed support 32 and the positioning block 33 are fitted into the positioning groove of the control ring 13, and the rubber pad 34 is filled between the control ring 13 and the fixed support 32 for buffering, so that the control ring 13 and the fixed support 32 make flexible contact. Then, the bottom end of the limiting screw 31 is passed through the through hole of the control ring 13 and rotated into the threaded groove of the fixed support 32 to limit the control ring 13, thereby achieving the limiting effect between the adjusting screw 12 and the control ring 13. Thus, the threaded tube 21 can be replaced after the control ring 13 is disassembled.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A shut-off valve with a protective structure, characterized in that, include: The shut-off valve body (1) includes a valve body (11), an adjusting screw (12) is inserted inside the top of the valve body (11), and a control ring (13) is provided at the top of the adjusting screw (12). The outer surface of the top end of the adjusting screw (12) is rotatably connected to a protective structure (2). The protective structure (2) includes a threaded tube (21). The top end of the threaded tube (21) is connected to a positioning frame (22). The inner surfaces of the positioning frame (22) are connected to arc-shaped sliding plates (23). The outer wall of the arc-shaped sliding plate (23) is fitted with a limiting screw sleeve (24). The inside of the limiting screw sleeve (24) is rotatably connected to a fixing ring (25). The surface of the fixing ring (25) is connected to a fixing screw (26). One end of the fixing screw (26) is rotatably connected to a nut (27).

2. A globe valve provided with a protection structure according to claim 1, characterized in that: The fixing ring (25) is connected to the top surface of the valve body (11). The inner and outer surfaces of the fixing ring (25) are both provided with threads. The inner surface of the threaded tube (21) is provided with threads. The threaded tube (21) and the adjusting screw (12) are rotatably connected by threads.

3. A globe valve provided with a protection structure according to claim 1, characterized in that: The inner surface of the limiting screw sleeve (24) is provided with threads, and the limiting screw sleeve (24) and the fixing ring (25) are rotatably connected by the threads. The outer surface of the limiting screw sleeve (24) is provided with an annular groove, and the arc-shaped sliding plate (23) is inserted into the annular groove of the limiting screw sleeve (24) and slidably connected with the limiting screw sleeve (24).

4. A globe valve provided with a protection structure according to claim 1, characterized in that: The top of the fixing ring (25) has a groove on one side, and the fixing screw (26) is inserted into the groove of the fixing ring (25). The fixing screw (26) and the nut (27) are connected by a thread.

5. A globe valve provided with a protection structure according to claim 1, characterized in that: The control ring (13) has a limiting structure (3) inserted inside its top end. The limiting structure (3) includes a limiting screw (31). A fixed support (32) is rotatably connected to the outer surface of the bottom end of the limiting screw (31). Positioning blocks (33) are connected to both sides of the fixed support (32). Rubber pads (34) are provided on both sides of the top end of the fixed support (32).

6. A globe valve provided with a protection structure according to claim 5, characterized in that: The fixed support (32) is connected to the top surface of the adjusting screw (12), and the bottom surface of the control ring (13) is provided with a positioning groove. The fixed support (32) and the positioning block (33) are inserted into the positioning groove of the control ring (13), and the rubber pad (34) is filled between the control ring (13) and the fixed support (32) for buffering.

7. A globe valve provided with a protection structure according to claim 5, characterized in that: The control ring (13) has a through hole on one side of the positioning groove, the fixed support (32) has a threaded groove on the top surface, and the bottom end of the limiting screw (31) passes through the through hole of the control ring (13) and is rotatably connected to the inside of the threaded groove of the fixed support (32).

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