Ball valve capable of preventing mistaken opening

Abstract

The utility model relates to the technical field of ball valves, in particular to a ball valve capable of preventing mistaken opening. The ball valve comprises a valve body, auxiliary installation assemblies are arranged at the two ends of the valve body, a limiting assembly is arranged at the upper end of the valve body, the upper end of the valve body is rotationally connected with a valve rod, the arc face of the valve rod is fixedly connected with a rotating rod, a ball body is arranged on the inner wall of the valve body, and a water through hole is formed in the arc face of the ball body. The limiting assembly comprises a mounting cavity formed in the inner wall of the valve body, a circular block is fixedly connected to the arc surface of the valve rod, a circular column is fixedly connected to the upper end of the circular block, and a U-shaped rod is slidably inserted into the arc surface of the circular column. And the U-shaped rod is clamped into the circular arc surface of the circular column, so that the circular block in the mounting cavity is limited, the valve rod is limited, and the effect of preventing the rotating rod from being accidentally touched and rotated to cause opening of the ball valve is achieved as far as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve capable of preventing accidental opening. Background Art

[0002] As a common valve in industrial production and daily life, the ball valve has a sphere as the closing part. The sphere rotates around the center line of the valve body to achieve the purpose of opening and closing. It has the characteristics of low fluid resistance, simple structure, small size, light weight, high reliability, easy operation, etc. It is widely used. The ball valve consists of a valve body, a sphere, a water hole, a valve stem, and a rotating rod. When using the ball valve, the valve body is installed between the pipes, and the rotating rod is rotated to rotate the ball, thereby changing the position of the water hole and the water flows out of the water hole. When closing, the rotating rod is rotated to rotate the ball, so that water cannot flow out of the water hole.

[0003] The inventor found in his daily work that when the ball valve is in use, since the ball valve is opened and closed by a rotating rod, and since the ball valve has a simple structure and lacks a limiting mechanism for the rotating rod, during maintenance, the maintenance technician may easily collide with the rotating rod, causing the ball valve to open, which may affect the maintenance of the ball valve. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that in actual use, since the ball valve is opened and closed by a rotating rod, and the ball valve has a simple structure and lacks a limiting mechanism for the rotating rod, during maintenance, the maintenance technician may easily collide with the rotating rod, causing the ball valve to be opened, which may further affect the maintenance of the ball valve. The utility model proposes a ball valve that can prevent accidental opening.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a ball valve that prevents accidental opening, comprising a valve body, auxiliary mounting assemblies are provided at both ends of the valve body, a limiting assembly is provided at the upper end of the valve body, the upper end of the valve body is rotatably connected to a valve stem, the arc surface of the valve stem is fixedly connected to a rotating rod, the inner wall of the valve body is provided with a sphere, the arc surface of the sphere is provided with a water hole, the limiting assembly includes a mounting cavity provided in the inner wall of the valve body, the arc surface of the valve stem is fixedly connected to a circular block, the upper end of the circular block is fixedly connected to a circular column, and the arc surface of the circular column is slidably inserted with a U-shaped rod.

[0006] The effect achieved by the above components is: by setting a limit assembly, when it is necessary to prevent the rotating rod from being accidentally touched and rotated, the U-shaped rod is clamped into the circular cylindrical arc surface, thereby limiting the circular block in the installation cavity, so as to limit the valve stem, and thus achieve the effect of preventing the rotating rod from being accidentally touched and rotated, causing the ball valve to open.

[0007] Preferably, a circular ring is fixedly connected to the upper end of the valve body, a square rod is slidably inserted into the arc surface of the circular ring, and the square rod is fixed to the U-shaped rod.

[0008] The effects achieved by the above components are: through the pushing mechanism, the square rod on the circular ring is pushed, so that the U-shaped rod is pushed.

[0009] Preferably, the upper end of the valve body is rotatably connected to a rotating ring, and the inner arc surface of the rotating ring is fixedly connected to a plurality of evenly distributed triangular blocks.

[0010] The effect achieved by the above components is: rotating the rotating ring causes the triangular block to rotate, so that the square rod on the circular ring is pushed.

[0011] Preferably, the left end of the U-shaped rod is fixedly connected to a first spring, and the other end of the first spring is fixed to a circular ring.

[0012] The effect achieved by the above components is: the U-shaped rod is reset by arranging the first spring.

[0013] Preferably, the arc surface of the rotating ring is fixedly connected to a grip rod, the upper end of the grip rod is inserted with a latch, and the latch is inserted into the valve body.

[0014] The effect achieved by the above components is that a worker holds the handle and rotates it, causing the rotating ring to rotate, inserting the latch into the valve body, and limiting the rotating ring.

[0015] Preferably, the auxiliary installation assembly includes a pair of auxiliary rings, and a baffle is fixedly connected to one side of the auxiliary ring.

[0016] The effect achieved by the above components is: when installing the ball valve to the pipeline, the auxiliary ring is slid to the arc surface of the pipeline, and then the ball valve is close to the pipeline. Then, the two auxiliary rings are fixed to each other through the fixing mechanism. Under the action of the baffle, the ball valve is limited to the pipeline, thereby assisting the installation of the ball valve.

[0017] Preferably, the left end of the auxiliary ring at the right end is fixedly connected with an insertion rod, and the insertion rod is inserted into the auxiliary ring. A positioning block is slidably inserted into the inner wall of the auxiliary ring at the left end, and the positioning block is inserted into the insertion rod. The upper end of the insertion rod is fixedly connected with an operating rod, and the operating rod passes through the auxiliary ring. A second spring is fixedly connected between the positioning block and the auxiliary ring.

[0018] The effect achieved by the above components is: the insertion rod is inserted into the auxiliary ring, so that the positioning block is locked into the insertion rod, so that the two auxiliary rings are fixed to each other, and the movement of the insertion rod is controlled by the operating rod, and the second spring resets the positioning block.

[0019] Preferably, a first sliding surface is provided at the lower end of the positioning block, and a second sliding surface is provided at the upper end of the insertion rod.

[0020] The effect achieved by the above components is that the auxiliary insertion rod is inserted into the auxiliary ring by providing the first sliding surface and the second sliding surface.

[0021] In summary, the beneficial effects of the present invention are as follows:

[0022] In the utility model, a limit assembly is provided, and when it is necessary to prevent the rotating rod from being accidentally hit and rotated, the U-shaped rod is stuck into the arc surface of the circular cylinder, thereby limiting the circular block in the installation cavity, so that the valve stem is limited, and thus the effect of preventing the rotating rod from being accidentally hit and rotated, which causes the ball valve to open, is achieved as much as possible. This solves the problem that the ball valve is opened and closed by the rotating rod, and the ball valve has a simple structure and lacks a limiting mechanism for the rotating rod, which makes it easy for the maintenance technician to collide with the rotating rod during maintenance, causing the ball valve to open, which may affect the maintenance of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the cross section of the utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the cross section of the limit assembly of the utility model;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the cross section of the auxiliary installation component of the present invention.

[0027] Legend: 1. Valve body; 2. Limit assembly; 3. Auxiliary installation assembly; 4. Valve stem; 5. Rotating rod; 6. Sphere; 7. Water hole; 21. Installation cavity; 22. Round block; 23. Round column; 24. Round ring; 25. U-shaped rod; 26. Square rod; 27. First spring; 28. Rotating ring; 29. ​​Triangular block; 210. Grip; 211. Pin; 31. Auxiliary ring; 32. Baffle; 33. Insert rod; 34. Positioning block; 35. First sliding surface; 36. Second sliding surface; 37. Operating rod; 38. Second spring. DETAILED DESCRIPTION

[0028] Reference Figure 1 and Figure 2 As shown, the utility model provides a technical solution: a ball valve that prevents accidental opening includes a valve body 1, auxiliary mounting components 3 are provided at both ends of the valve body 1, a limiting component 2 is provided at the upper end of the valve body 1, the upper end of the valve body 1 is rotatably connected to a valve stem 4, the arc surface of the valve stem 4 is fixedly connected to a rotating rod 5, the inner wall of the valve body 1 is provided with a sphere 6, and the arc surface of the sphere 6 is provided with a water hole 7.

[0029] The following describes in detail the specific settings and functions of the limit assembly 2 and the auxiliary installation assembly 3.

[0030] Reference Figure 3As shown, in this embodiment: the limiting component 2 includes a mounting cavity 21 opened on the inner wall of the valve body 1, the arc surface of the valve stem 4 is fixedly connected to a circular block 22, the upper end of the circular block 22 is fixedly connected to a circular column 23, and the arc surface of the circular column 23 is slidably inserted with a U-shaped rod 25. By setting the limiting component 2, when it is necessary to prevent the rotating rod 5 from being accidentally touched and rotated, the U-shaped rod 25 is snapped into the arc surface of the circular column 23, thereby limiting the circular block 22 in the mounting cavity 21, so that the valve stem 4 is limited, and thus the effect of preventing the rotating rod 5 from being accidentally touched and rotated, which causes the ball valve to open, is achieved as much as possible. The upper end of the valve body 1 is fixedly connected to a circular ring 24, and the arc surface of the circular ring 24 is slidably inserted with a square rod 26. The square rod 26 and the U-shaped rod 25 are fixed, and the circular ring 24 is pushed by the pushing mechanism. The square rod 26 is pushed, so that the U-shaped rod 25 is pushed, and the upper end of the valve body 1 is rotatably connected to the rotating ring 28. The inner arc surface of the rotating ring 28 is fixedly connected to a plurality of evenly distributed triangular blocks 29. The rotating ring 28 is rotated to rotate the triangular blocks 29, so that the square rod 26 on the circular ring 24 is pushed. The left end of the U-shaped rod 25 is fixedly connected to the first spring 27, and the other end of the first spring 27 is fixed to the circular ring 24. By setting the first spring 27, the U-shaped rod 25 is reset. The arc surface of the rotating ring 28 is fixedly connected to the grip rod 210, and the upper end of the grip rod 210 is inserted with a pin 211, which is inserted into the valve body 1. The worker holds the grip rod 210 and rotates it to rotate the rotating ring 28 and inserts the pin 211 into the valve body 1 to limit the rotating ring 28.

[0031] Reference Figure 2 and Figure 4 As shown, in this embodiment: the auxiliary installation component 3 includes a pair of auxiliary rings 31, one side of the auxiliary ring 31 is fixedly connected to a baffle 32. When installing the ball valve to the pipeline, the auxiliary ring 31 is slid to the arc surface of the pipeline, and then the ball valve is close to the pipeline. Then, the two auxiliary rings 31 are fixed to each other through the fixing mechanism. Under the action of the baffle 32, the ball valve is limited to the pipeline, thereby assisting the installation of the ball valve. The left end of the right auxiliary ring 31 is fixedly connected to a plug rod 33, and the plug rod 33 is inserted into the auxiliary ring 31. The inner wall of the left auxiliary ring 31 is slidably inserted with a positioning block 34, and the positioning block 34 is inserted into the plug rod 33. The upper end of the rod 33 is fixedly connected to an operating rod 37, which passes through the auxiliary ring 31. A second spring 38 is fixedly connected between the positioning block 34 and the auxiliary ring 31. The insertion rod 33 is inserted into the auxiliary ring 31, so that the positioning block 34 is stuck in the insertion rod 33, so that the two auxiliary rings 31 are fixed to each other. The movement of the insertion rod 33 is controlled by the operating rod 37, and the second spring 38 resets the positioning block 34. The lower end of the positioning block 34 is provided with a first sliding surface 35, and the upper end of the insertion rod 33 is provided with a second sliding surface 36. By setting the first sliding surface 35 and the second sliding surface 36, the insertion rod 33 is assisted in being inserted into the auxiliary ring 31.

[0032] Working principle:

[0033] When using the ball valve, the valve body 1 is installed between the pipes, and the rotating rod 5 is rotated to rotate the ball 6, thereby changing the position of the water hole 7 and allowing water to flow out of the water hole 7. When closing, the rotating rod 5 is rotated to rotate the ball 6, thereby preventing water from flowing out of the water hole 7. When it is necessary to prevent the rotating rod 5 from being accidentally touched and rotated, the worker holds the grip 210 and rotates it, so that the rotating ring 28 rotates, and the triangular block 29 rotates, so that the square rod 26 on the circular ring 24 is pushed, and the U-shaped rod 25 is pushed, so that the U-shaped rod 25 is stuck in the arc surface of the circular column 23, thereby limiting the circular block 22 in the installation cavity 21, and limiting the valve stem 4, thereby preventing the rotating rod 5 from being accidentally touched and rotated to the greatest extent possible and causing the ball valve to open. Function, insert the pin 211 into the valve body 1, limit the rotating ring 28, and reset the U-shaped rod 25 by setting the first spring 27. When installing the ball valve to the pipeline, slide the auxiliary ring 31 to the arc surface of the pipeline, and then close the ball valve to the pipeline, and then insert the rod 33 into the auxiliary ring 31, so that the positioning block 34 is stuck in the rod 33, so that the two auxiliary rings 31 are fixed to each other. The rod 33 is controlled to move by the operating rod 37, and at the same time, the second spring 38 resets the positioning block 34, so that the two auxiliary rings 31 are fixed to each other. Under the action of the baffle 32, the ball valve is limited to the pipeline, thereby assisting the installation of the ball valve. By setting the first sliding surface 35 and the second sliding surface 36, the rod 33 is assisted in being inserted into the auxiliary ring 31.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A ball valve for preventing accidental opening, comprising a valve body (1), characterized in that: Auxiliary mounting components (3) are provided at both ends of the valve body (1), a limiting component (2) is provided at the upper end of the valve body (1), the upper end of the valve body (1) is rotatably connected to a valve stem (4), the arc surface of the valve stem (4) is fixedly connected to a rotating rod (5), the inner wall of the valve body (1) is provided with a sphere (6), the arc surface of the sphere (6) is provided with a water hole (7), the limiting component (2) includes a mounting cavity (21) provided on the inner wall of the valve body (1), the arc surface of the valve stem (4) is fixedly connected to a circular block (22), the upper end of the circular block (22) is fixedly connected to a circular column (23), and the arc surface of the circular column (23) is slidably inserted with a U-shaped rod (25).

2. A ball valve for preventing accidental opening according to claim 1, characterized in that: The upper end of the valve body (1) is fixedly connected with a circular ring (24), and a square rod (26) is slidably inserted into the arc surface of the circular ring (24), and the square rod (26) and the U-shaped rod (25) are fixed.

3. A ball valve for preventing accidental opening according to claim 2, characterized in that: The upper end of the valve body (1) is rotatably connected to a rotating ring (28), and the inner arc surface of the rotating ring (28) is fixedly connected to a plurality of evenly distributed triangular blocks (29).

4. A ball valve for preventing accidental opening according to claim 3, characterized in that: The left end of the U-shaped rod (25) is fixedly connected to a first spring (27), and the other end of the first spring (27) is fixed to the circular ring (24).

5. A ball valve for preventing accidental opening according to claim 4, characterized in that: The arc surface of the rotating ring (28) is fixedly connected to a grip rod (210), an upper end of the grip rod (210) is provided with a latch pin (211), and the latch pin (211) is inserted into the valve body (1).

6. A ball valve for preventing accidental opening according to claim 5, characterized in that: The auxiliary mounting assembly (3) comprises a pair of auxiliary rings (31), and a baffle (32) is fixedly connected to one side of the auxiliary ring (31).

7. A ball valve for preventing accidental opening according to claim 6, characterized in that: The left end of the auxiliary ring (31) at the right end is fixedly connected with an insertion rod (33), and the insertion rod (33) is inserted into the auxiliary ring (31). A positioning block (34) is slidably inserted into the inner wall of the auxiliary ring (31) at the left end, and the positioning block (34) is inserted into the insertion rod (33). The upper end of the insertion rod (33) is fixedly connected with an operating rod (37), and the operating rod (37) passes through the auxiliary ring (31). A second spring (38) is fixedly connected between the positioning block (34) and the auxiliary ring (31).

8. The ball valve for preventing accidental opening according to claim 7, characterized in that: The lower end of the positioning block (34) is provided with a first sliding surface (35), and the upper end of the insertion rod (33) is provided with a second sliding surface (36).

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