Anti-mis-touch three-way ball valve

Abstract

The utility model belongs to valve technical field relates to a kind of three-way ball valve of anti-misoperation, including ball valve body, the top of ball valve body is equipped with valve stem, the top of valve stem is connected with handle, the top of valve stem is equipped with connecting block, one end of handle is rotatably connected on the connecting block in vertical plane, one end of handle close to valve stem is vertically downward and is equipped with limit rod, the side of ball valve body is equipped with the limit block that limit rod is directly opposite, limit block is equipped with limit hole, when handle is in horizontal state, the bottom end of limit rod is inserted into limit hole, reset mechanism for maintaining handle in horizontal state is equipped between connecting block and handle. When the ball valve body is in open or closed state, the handle is in horizontal state, the bottom end of limit rod is inserted into limit hole, so as to lock the handle, prevent misoperation and open or close the ball valve body.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a three-way ball valve that prevents accidental activation. Background Technology

[0002] A three-way ball valve is a ball valve with three channels, widely used in fluid control. By rotating the ball, the relative positions of its internal channels and the interfaces on the valve body are changed, thereby controlling different flow directions of the fluid. When the ball rotates to different positions, any two of the three channels can be connected while the third channel is cut off; or all three channels can be connected simultaneously, depending on the rotation angle of the ball and the valve design. Common three-way ball valves lack a safety guard on the handle, which may lead to accidental switching or closure of the pipeline due to unknowing touch by the operator. Therefore, this invention proposes a three-way ball valve to prevent accidental touch. Utility Model Content

[0003] The main objective of this invention is to provide a three-way ball valve that prevents accidental activation, thus solving the problem in the background art where three-way ball valves are prone to pipeline switching or closure due to accidental activation by workers.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a three-way ball valve for preventing accidental activation, comprising a ball valve body, a valve stem at the top of the ball valve body, a handle connected to the top of the valve stem, a connecting block at the top of the valve stem, one end of the handle being rotatably connected to the connecting block in a vertical plane, a limiting rod vertically downward at the end of the handle near the valve stem, a limiting block facing the limiting rod on the side of the ball valve body, a limiting hole on the limiting block, and when the handle is in a horizontal state, the bottom end of the limiting rod extending into the limiting hole, and a reset mechanism for maintaining the handle in a horizontal state between the connecting block and the handle.

[0005] Preferably, the valve stem has a square segment with a square cross-section at the top, a retaining ring at the bottom of the square segment, a square through hole on the connecting block, the connecting block is fitted onto the valve stem, and a nut is connected to the top of the valve stem.

[0006] Preferably, the handle is provided with a clearance groove that matches the connecting block, and a shaft is provided at the middle position of both sides of the clearance groove. A insertion hole is provided at the middle position of the side of the connecting block, and the shaft is rotatably connected in the insertion hole.

[0007] Preferably, the reset mechanism includes an arc-shaped groove centered on the insertion hole on the side of the connecting block, the top of the arc-shaped groove being flush with the insertion hole, one end of a connecting rod being connected to the inner side of the clearance groove, the other end of the connecting rod being movably connected within the arc-shaped groove, a spring being provided within the arc-shaped groove, the two ends of the spring being respectively connected to the bottom inner wall of the arc-shaped groove and the end of the connecting rod, and the spring being in a compressed state.

[0008] The beneficial effects of this utility model are as follows: when the ball valve body is in the open or closed state, the handle is in a horizontal state, and the bottom end of the limiting rod extends into the limiting hole, thereby locking the handle. The reset mechanism keeps the handle in a horizontal state, thereby preventing accidental opening or closing of the ball valve body. Attached Figure Description

[0009] Figure 1 This is a diagram showing the arrangement of a three-way ball valve designed to prevent accidental activation during operation, as illustrated in the example.

[0010] Figure 2 This is a schematic diagram of the handle structure.

[0011] Figure 3 This is a schematic diagram of the connecting block structure.

[0012] The numbers in the diagram represent:

[0013] 1. Ball valve body; 2. Handle; 3. Connecting block; 4. Limit rod; 5. Limit block; 6. Square through hole; 7. Nut; 8. Shaft; 9. Insertion hole; 10. Arc groove; 11. Connecting rod; 12. Spring; 13. Clearance groove; 14. Valve stem. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to specific embodiments.

[0015] Example:

[0016] like Figures 1 to 3As shown, this utility model discloses a three-way ball valve for preventing accidental activation, comprising a ball valve body 1, a valve stem 14 at the top of the ball valve body 1, a handle 2 connected to the top of the valve stem 14, a connecting block 3 at the top of the valve stem 14, one end of the handle 2 being rotatably connected to the connecting block 3 in a vertical plane, a limiting rod 4 vertically downwards at the end of the handle 2 near the valve stem 14, a limiting block 5 facing the limiting rod 4 on the side of the ball valve body 1, a limiting hole vertically penetrating the limiting block 5, and when the handle 2 is in a horizontal state, the bottom end of the limiting rod 4 extending into the limiting hole. One limiting block 5 is provided at each of the open and closed positions of the ball valve body 1, thereby enabling the ball valve body 1 to be locked in both open and closed states. A reset mechanism is provided between the connecting block 3 and the handle 2 to maintain the handle 2 in a horizontal state.

[0017] The valve stem 14 has a square segment with a square cross-section at the top and a retaining ring at the bottom of the square segment. The connecting block 3 has a square through hole 6. The connecting block 3 is fitted onto the valve stem 14. The valve stem 14 is connected to a nut 7 at the top.

[0018] The handle 2 is provided with a relief groove 13 that matches the connecting block 3. A shaft 8 is provided at the middle position of both sides of the relief groove 13. A socket 9 is provided at the middle position of the side of the connecting block 3. The shaft 8 is rotatably connected in the socket 9.

[0019] The reset mechanism includes an arc-shaped groove 10 centered on the insertion hole 9 on the side of the connecting block 3. The top end of the arc-shaped groove 10 is flush with the insertion hole 9. One end of a connecting rod 11 is connected to the inner side of the clearance groove 13. The other end of the connecting rod 11 is movably connected to the arc-shaped groove 10. A spring 12 is provided in the arc-shaped groove 10. The two ends of the spring 12 are respectively connected to the bottom inner wall of the arc-shaped groove 10 and the end of the connecting rod 11. The spring 12 is in a compressed state.

[0020] The usage process of this utility model is as follows: When the ball valve body 1 is in the open or closed state, the handle 2 is in a horizontal state, and the bottom end of the limiting rod 4 extends into the limiting hole, thereby locking the handle 2 to prevent accidental opening or closing of the ball valve body 1; when it is necessary to switch the state of the ball valve body 1, press the handle 2 down, the handle 2 rotates counterclockwise around the shaft 8, the bottom end of the limiting rod 4 exits the limiting hole, rotate the handle 2, the handle 2 drives the valve stem 14 to rotate, thereby switching the state of the ball valve body 1, after rotating to the correct position, release the handle 2, the handle 2 returns to its original position under the elastic force of the spring 12, and the bottom end of the limiting rod 4 inserts into the limiting hole on another limiting block 5.

[0021] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A mis-touch proof tee ball valve, characterized by: The valve includes a ball valve body, a valve stem at the top of the ball valve body, a handle connected to the top of the valve stem, a connecting block at the top of the valve stem, one end of the handle being rotatably connected to the connecting block in a vertical plane, a limiting rod vertically downwards at the end of the handle near the valve stem, a limiting block facing the limiting rod on the side of the ball valve body, a limiting hole on the limiting block, and when the handle is in a horizontal state, the bottom end of the limiting rod extending into the limiting hole. A reset mechanism for maintaining the handle in a horizontal state is provided between the connecting block and the handle.

2. The three-way ball valve for preventing accidental activation according to claim 1, characterized in that: The valve stem has a square segment with a square cross-section at the top, a retaining ring at the bottom of the square segment, a square through hole on the connecting block, the connecting block is fitted onto the valve stem, and a nut is connected to the top of the valve stem.

3. The three-way ball valve for preventing accidental activation according to claim 2, characterized in that: The handle is provided with a clearance groove that matches the connecting block. A shaft is provided at the middle position on both sides of the clearance groove. A insertion hole is provided at the middle position on the side of the connecting block. The shaft is rotatably connected to the insertion hole.

4. A three-way ball valve for preventing accidental activation according to claim 3, characterized in that: The reset mechanism includes an arc-shaped groove centered on the insertion hole on the side of the connecting block. The top of the arc-shaped groove is flush with the insertion hole. One end of a connecting rod is connected to the inner side of the clearance groove. The other end of the connecting rod is movably connected to the arc-shaped groove. A spring is provided in the arc-shaped groove. The two ends of the spring are respectively connected to the bottom inner wall of the arc-shaped groove and the end of the connecting rod. The spring is in a compressed state.

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