Mistaken touch prevention ball valve

Abstract

According to the technical scheme, the mistaken touch prevention ball valve is characterized in that the mistaken touch prevention ball valve comprises a valve body, a driving piece and a ball body, the ball body and the driving piece are rotationally connected with the valve body, the driving piece comprises a rotating rod and a sliding rod, the sliding rod is connected into the rotating rod in a sliding mode, and one end of the sliding rod is connected with the ball body; a sliding groove is formed in the ball body, a limiting rod is slidably connected in the sliding groove, the limiting rod and the sliding rod are arranged in a linkage mode, a plurality of limiting holes are formed in the valve body in the circumferential direction, and the limiting rod is inserted into the limiting holes for limiting; a limiting block is arranged on the sliding rod, a limiting groove is formed in the valve body, when the sliding rod moves downwards to push the limiting rod to move, the limiting block is clamped into the limiting groove, the situation that the handle is touched by mistake can be avoided through the ball valve, and the stability of the flow of the ball is guaranteed.

Description

Technical Field

[0001] The utility model relates to a ball valve, more specifically, to an anti-mistouch ball valve. Background Art

[0002] A ball valve is a valve whose opening and closing part (ball) is driven by a valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. Ball valves are divided into pneumatic ball valves, electric ball valves, and manual ball valves according to the driving method. They are widely used in various departments such as petroleum, chemical industry, power generation, papermaking, atomic energy, aviation, rockets, and people's daily life.

[0003] The following problems may occur during the use of ball valves: 1. When the ball valve is working for a long time, if the operator accidentally touches the ball valve handle and causes the valve ball to rotate slightly, the flow through the ball valve will change, causing the overall final total flow to be significantly different from the actual desired flow.

[0004] 2. When the existing ball valve controls the flow by adjusting the area of ​​the valve ball through hole and the valve seat opening, since the valve port is not fully opened, the pressure difference before and after the ball valve is large, so a large hydraulic force will be generated at the valve port. When the ball valve works for a long time, the hydraulic force will push the valve ball to rotate slowly, and the ball valve will automatically close after a long time. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an anti-mistouch ball valve, which can prevent the handle from being accidentally touched and ensure the stability of the ball flow.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-mistouch ball valve, comprising a valve body, a driving member, and a ball, wherein the ball and the driving member are respectively rotatably connected to the valve body, the driving member comprises a rotating rod and a sliding rod, the sliding rod is slidably connected in the rotating rod, and one end of the sliding rod is connected to the ball;

[0007] The ball is provided with a sliding groove, the sliding groove is slidably connected with a limit rod, the limit rod and the sliding rod are arranged in linkage, and the valve body is provided with a plurality of limit holes along its circumference, and the limit holes are used for the limit rod to be inserted for limiting;

[0008] A limit block is arranged on the sliding rod, and a limit groove is arranged on the valve body. When the sliding rod moves downward to push the limit rod to move, the limit block is inserted into the limit groove.

[0009] To sum up, the utility model has the following beneficial effects: when the valve is in a flow state, the sliding rod is pressed down so that the sliding rod pushes the limiting rod to be inserted into the limiting hole, so that the ball is limited relative to the valve body, thereby avoiding the situation where the ball is rotated due to the flow difference at both ends of the ball during use.

[0010] The limiting block on the sliding rod will be engaged with the limiting groove on the valve body, so that the sliding rod is limited, so that the driving member cannot be rotated, thereby avoiding the situation of accidentally touching the driving member. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of a ball valve;

[0012] Figure 2 Schematic diagram of the internal structure of the ball valve;

[0013] Figure 3 This is an enlarged schematic diagram of point A;

[0014] Figure 4 This is an enlarged schematic diagram of point B.

[0015] Figure numerals: 1, valve body; 11, limiting hole; 12, limiting groove; 2, driving member; 21, rotating rod; 211, spring groove; 212, return spring; 22, sliding rod; 221, pushing surface; 23, limiting block; 24, transmission block; 3, sphere; 31, sliding groove; 32, limiting rod; 321, guide block; 322, guide block; 33, transmission groove; 4, limiting spring; 5, pull ring; 6, hand-held part; 61, force plate. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0017] Reference Figures 1 to 4 As shown, in order to achieve the above purpose, the utility model provides the following technical solutions: an anti-mistouch ball valve, comprising a valve body 1, a driving member 2, and a ball 3, wherein the ball 3 and the driving member 2 are respectively rotatably connected to the valve body 1, the driving member 2 comprises a rotating rod 21 and a sliding rod 22, the sliding rod 22 is slidably connected in the rotating rod 21, and one end of the sliding rod 22 is connected to the ball 3;

[0018] The ball 3 is provided with a sliding groove 31, and a limit rod 32 is slidably connected in the sliding groove 31. The limit rod 32 is linked with the sliding rod 22. A plurality of limit holes 11 are provided in the valve body 1 along its circumference, and the limit holes 11 are used for the limit rod 32 to be inserted into the limit holes 11;

[0019] A limit block 23 is provided on the sliding rod 22 , and a limit slot 12 is provided on the valve body 1 . When the sliding rod 22 moves downward to push the limit rod 32 to move, the limit block 23 is inserted into the limit slot 12 .

[0020] According to the design of the utility model, when the valve is in a flow state, the sliding rod 22 is pressed down so that the sliding rod 22 pushes the limiting rod 32 to be inserted into the limiting hole 11, so that the ball 3 is limited relative to the valve body 1, thereby avoiding the situation in which the ball 3 is rotated due to the flow difference at both ends of the ball 3 during use.

[0021] At the same time, the limiting block 23 on the sliding rod 22 will be engaged with the limiting groove 12 on the valve body 1, so that the sliding rod 22 is limited, so that the driving member 2 cannot be rotated, thereby avoiding the accidental contact of the driving member 2. It plays a double insurance role.

[0022] The shapes of the limit groove 12 and the limit block 23 and the number of the limit holes 11 are explained here: for example, the rotation angle of the ball valve is 0 to 90 degrees, and thus it can be divided into 5 working states according to the 90 degrees, and each working state corresponds to 18 degrees, and indicators are provided on the valve body 1 and the drive member 2 to show which working state it is in. Therefore, the limit groove 12 and the limit block 23 are both arranged in a prismatic structure (the edges of the limit groove 12 and the limit block 23 are designed according to the tooling state to ensure that the limit groove 12 can cooperate with the limit block 23 in each working state), and a fixed limit can be formed.

[0023] There are two groups of limit rods 32, which are symmetrically arranged along the center of the sphere 3. The design of this structure can form a plug-in connection in two directions to ensure the stability and strength of the connection.

[0024] A guide block 321 is disposed at one end of the limit rod 32 close to the sliding rod 22. A guide surface is disposed on the guide block 321. A push surface 221 cooperating with the guide surface is disposed at the lower end of the sliding rod 22. Figure 4 As shown, the structure is designed so that when the sliding rod 22 moves downward, the pushing surface 221 abuts against the guide block 321, thereby pushing the limiting rod 32 to move to both sides, such as the limiting rod 32 on the left moves to the left, and the limiting rod 32 on the right moves to the right.

[0025] A guide block 322 is provided at one end of the limit rod 32 close to the valve body 1, and the guide block 322 is provided in a truncated cone structure. The design of the truncated cone structure makes the diameter of the guide block 322 gradually decrease along the length direction of the limit rod 32. Since the front end size of the guide block 322 is smaller than the size of the limit hole 11, the insertion range is increased. When the sliding rod 22 is blocked from pressing down, the driving member 2 can be rotated in a small range to make fine adjustments until the sliding rod 22 can be completely pressed down, thereby ensuring that the limit rod 32 can be completely inserted into the limit hole 11 and ensure the stability of use.

[0026] A transmission block 24 is disposed below the limit block 23 of the sliding rod 22 , a transmission groove 33 is disposed in the sphere 3 , and the transmission block 24 is engaged with the transmission groove 33 .

[0027] The transmission block 24 and the transmission slot 33 are both arranged in a hexagonal column structure.

[0028] In the design of this structure, the sliding rod 22 can drive the ball 3 to rotate through the transmission block 24 to ensure the stability of the rotation. Whether the transmission block 24 will be separated from the transmission groove 33 during the sliding process of the sliding rod 22 can be designed according to the usage conditions and will not be elaborated here.

[0029] A spring slot 211 and a return spring 212 are provided in the rotating rod 21 . The return spring 212 is sleeved on the outer side of the sliding rod 22 . The sliding rod 22 is provided with a matching arm that is slidably matched with the return spring 212 .

[0030] A pull ring 5 is hingedly provided at the upper end of the sliding rod 22 .

[0031] The design of this structure is that when the sliding rod 22 is pressed down, the return spring 212 is pressed down through the matching arm until the limit block 23 engages with the limit groove 12 (the limit block 23 and the limit groove 12 adopt an interference fit so that the engaging force is greater than the spring of the return spring 212, so that it will not reset immediately without external action). When resetting is required, the pull ring 5 is pulled upward to separate the limit block 23 and the limit groove 12, and the sliding rod 22 is kept in a relatively stable position under the action of the return spring 212.

[0032] A limit spring 4 is provided between the limit rod 32 and the ball 3. The limit spring 4 is designed so that when the sliding rod 22 is reset, the limit rod 32 is reset under the action of the limit spring 4, so that the guide block 322 is separated from the limit hole 11. The setting method of the limit spring 4 can be the same as that of the reset spring 212, or both can adopt other existing methods.

[0033] Handle parts 6 are extended on both sides of the rotating rod 21, and force plates 61 extending upward are provided on the handle parts 6. The design of the force plates 61 can facilitate the operator to rotate, such as Figure 1 As shown, the force application plates 61 on both sides have different thicknesses to facilitate the usage habits of different people.

[0034] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A ball valve for preventing accidental touch, comprising a valve body (1), a driving member (2), and a ball (3), wherein the ball (3) and the driving member (2) are rotatably connected to the valve body (1), respectively, and characterized in that: The driving member (2) comprises a rotating rod (21) and a sliding rod (22), wherein the sliding rod (22) is slidably connected inside the rotating rod (21), and one end of the sliding rod (22) is connected to the ball (3); The ball (3) is provided with a sliding groove (31), a limiting rod (32) is slidingly connected in the sliding groove (31), the limiting rod (32) is arranged in linkage with the sliding rod (22), and a plurality of limiting holes (11) are arranged in the valve body (1) along its circumference, and the limiting holes (11) are for the limiting rod (32) to be inserted into for limiting; A limit block (23) is provided on the sliding rod (22), and a limit slot (12) is provided on the valve body (1); when the sliding rod (22) moves downward to push the limit rod (32) to move, the limit block (23) is inserted into the limit slot (12).

2. The anti-mistaken-touch ball valve according to claim 1 is characterized in that: The limiting rods (32) are provided in two groups and are symmetrically arranged along the center of the sphere (3).

3. The anti-mistaken touch ball valve according to claim 2 is characterized in that: A guide block (321) is provided at one end of the limit rod (32) close to the sliding rod (22), a guide surface is provided on the guide block (321), and a pushing surface (221) matching the guide surface is provided at the lower end of the sliding rod (22).

4. The anti-mistaken touch ball valve according to claim 2 is characterized in that: A guide block (322) is provided at one end of the limiting rod (32) close to the valve body (1), and the guide block (322) is arranged in a truncated cone structure.

5. The anti-mistouch ball valve according to claim 1, characterized in that: The sliding rod (22) is provided with a transmission block (24) below the limiting block (23), a transmission groove (33) is provided in the sphere (3), and the transmission block (24) is embedded in the transmission groove (33).

6. The anti-mistaken-touch ball valve according to claim 5 is characterized in that: The transmission block (24) and the transmission groove (33) are both arranged in a hexagonal column structure.

7. The anti-mistaken-touch ball valve according to claim 1 is characterized in that: A spring slot (211) and a return spring (212) are provided in the rotating rod (21); the return spring (212) is sleeved on the outside of the sliding rod (22); and a matching arm that is slidably matched with the return spring (212) is provided on the sliding rod (22).

8. The anti-mistouch ball valve according to any one of claims 1 to 7, characterized in that: A limit spring (4) is arranged between the limit rod (32) and the spherical body (3).

9. The anti-mistouch ball valve according to any one of claims 1 to 7, characterized in that: A pull ring (5) is hingedly provided at the upper end of the sliding rod (22).

10. The anti-mistouch ball valve according to any one of claims 1 to 7, characterized in that: Hand-held parts (6) are extended on both sides of the rotating rod (21), and force application plates (61) extending upwards are provided on the hand-held parts (6).

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