Butterfly valve convenient to lock

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a butterfly valve convenient to lock, which comprises a butterfly valve, the butterfly valve consists of a valve body, a valve rod and a valve plate, and a locking component arranged at the top of the valve body and on the valve rod, the locking component consists of a limiting part for limiting the valve rod and a control part for controlling the limiting part, and the limiting part is arranged on the valve plate. According to the butterfly valve convenient to lock, the abutting rod is pinched by holding the handle to abut against the sliding block to move leftwards, when the abutting rod abuts against the diagonal plane of the top of the sliding block, the sliding block can abut against the sliding block to move, and when the sliding block slides leftwards, the sliding block can push the clamping rod to move upwards through the supporting rod, so that the clamping rod cannot be continuously clamped on the conical teeth; and when the clamping rod is inserted into the conical teeth, the disc can be limited, so that the valve rod cannot rotate, the locking effect is achieved, and the situation that the valve rod rotates due to careless touch is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve which is convenient to lock. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for switching control of low-pressure pipeline media. A butterfly valve refers to a valve in which the closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing.

[0003] Most of the butterfly valves currently used control the rotation of the valve plate by directly twisting the valve stem with a handle. However, in daily operation, it is easy to accidentally cause resistance to the valve stem, causing the valve stem to rotate and control the valve plate to rotate, resulting in the butterfly valve no longer being airtight and leaking. For this reason, we propose a butterfly valve that is easy to lock. Utility Model Content

[0004] The purpose of the utility model is to provide a butterfly valve that is convenient to lock, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a butterfly valve convenient for locking, comprising a butterfly valve, wherein the butterfly valve is composed of a valve body, a valve stem and a valve plate;

[0006] A locking assembly is arranged on the top of the valve body and the valve stem, and the locking assembly is composed of a limiting part for limiting the valve stem and a control part for controlling the limiting part;

[0007] The limiting part is arranged at the top of the valve body, and the control part is arranged at the top of the valve stem.

[0008] Preferably, the limiting portion comprises a disc, the disc is penetrated by the valve stem and fixedly connected to the valve stem, a slide groove is provided on the top of the disc, a slider is slidably installed on the inner side of the slide groove, and a return spring is fixed on the inner side of the slide groove.

[0009] Preferably, a clamping rod is slidably installed on the inner side of the slide groove, a support rod is hinged on the side of the slider away from the return spring, and one end of the support rod away from the slider is hinged to the clamping rod. A groove is provided on the top of the valve body, and conical teeth are fixed on the inner side of the groove. The clamping rod can be inserted into the conical teeth to limit the disc, so that the valve stem cannot rotate, thereby playing a locking role. When the slider slides to the left, the slider can push the clamping rod to move upward through the support rod, so that the clamping rod can no longer be stuck on the conical teeth, thereby releasing the limit on the disc and allowing the valve stem to rotate.

[0010] Preferably, the control part includes a handle, which is fixed to the top of the valve stem, a connecting column is fixed to the bottom of the handle, a resistance rod is hinged on the inner side of the connecting column, a connecting spring is fixed to the top of the resistance rod, and one end of the connecting spring away from the resistance rod is fixed to the bottom of the handle. When the staff holds the handle, the resistance rod can be squeezed so that the resistance rod can rotate at the position hinged to the connecting column.

[0011] Preferably, the resistance rod is in an inverted V shape. When the resistance rod is squeezed, one end of the resistance rod fits against the bottom of the handle, and the other end of the resistance rod can resist the beveled surface on the top of the slider to push the slider to move leftward.

[0012] Preferably, the top of the slider is provided with an oblique surface, and when the abutment rod abuts against the oblique surface on the top of the slider, the slider can be pushed to move.

[0013] Compared with the prior art, the utility model provides a butterfly valve that is convenient to lock, which has the following beneficial effects:

[0014] The butterfly valve which is easy to lock can resist the sliding block to move to the left by holding the handle and squeezing the resistance rod. When the resistance rod resists the beveled surface on the top of the sliding block, the sliding block can be resisted to move. When the sliding block slides to the left, the sliding block can push the clamping rod to move upward through the support rod, so that the clamping rod can no longer be clamped on the conical teeth, thereby releasing the limit on the disc and allowing the valve stem to rotate. When the clamping rod is inserted into the conical teeth, the disc can be limited, so that the valve stem cannot rotate, thereby playing a locking role and preventing the valve stem from rotating due to accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the front view structure of the control unit of the utility model;

[0017] Figure 3 This is a schematic diagram of the top view of the limiting part of the utility model;

[0018] Figure 4 It is a schematic diagram of the groove and conical teeth structure on the top of the valve body of the utility model.

[0019] In the figure: 1. butterfly valve; 101. valve body; 102. valve stem; 103. valve plate; 2. limit part; 21. disc; 22. slide groove; 23. slider; 24. clamping rod; 25. support rod; 26. groove; 27. conical teeth; 28. return spring; 3. control part; 31. handle; 32. connecting column; 33. resistance rod; 34. connecting spring. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a butterfly valve that is easy to lock, including a butterfly valve 1, the butterfly valve 1 is composed of a valve body 101, a valve stem 102 and a valve plate 103, a locking assembly is arranged on the top of the valve body 101 and the valve stem 102, the locking assembly is composed of a limiting part 2 for limiting the valve stem 102 and a control part 3 for controlling the limiting part 2, the limiting part 2 is arranged at the top of the valve body 101, and the control part 3 is arranged at the top of the valve stem 102.

[0021] The limiting part 2 includes a disc 21, which is penetrated by the valve stem 102 and fixedly connected to the valve stem 102. A slide groove 22 is provided on the top of the disc 21, a slider 23 is slidably installed on the inner side of the slide groove 22, a return spring 28 is fixed on the inner side of the slide groove 22, a clamping rod 24 is slidably installed on the inner side of the slide groove 22, a support rod 25 is hinged on the side of the slider 23 away from the return spring 28, and one end of the support rod 25 away from the slider 23 is hinged to the clamping rod 24, a groove 26 is provided on the top of the valve body 101, and a conical tooth 27 is fixed on the inner side of the groove 26. A chamfered surface is provided on the top of the slider 23. When the abutting rod 33 abuts against the chamfered surface on the top of the slider 23, the slider 23 can be pushed to move. The clamping rod 24 can be inserted into the conical teeth 27 to limit the disc 21, so that the valve stem 102 cannot rotate, thereby playing a locking role. When the slider 23 slides to the left, the slider 23 can push the clamping rod 24 to move upward through the support rod 25, so that the clamping rod 24 can no longer be stuck on the conical teeth 27, thereby releasing the limit on the disc 21 and allowing the valve stem 102 to rotate.

[0022] The control part 3 includes a handle 31, which is fixed on the top of the valve stem 102, and a connecting column 32 is fixed to the bottom of the handle 31. A resistance rod 33 is hinged on the inner side of the connecting column 32, and a connecting spring 34 is fixed to the top of the resistance rod 33. One end of the connecting spring 34 away from the resistance rod 33 is fixed to the bottom of the handle 31. When the staff holds the handle 31, the resistance rod 33 can be squeezed so that the resistance rod 33 can be rotated at the position hinged with the connecting column 32. The resistance rod 33 is in an inverted V shape. When the resistance rod 33 is squeezed, one end of the resistance rod 33 fits against the bottom of the handle 31, and the other end of the resistance rod 33 can resist the bevel surface at the top of the slider 23 to push the slider 23 to move to the left.

[0023] Based on the above embodiment, when controlling the butterfly valve 1, the staff holds the handle 31 and pinches the resistance rod 33, so that the resistance rod 33 rotates at the hinged position with the connecting column 32, and one end of the resistance rod 33 fits with the bottom of the handle 31, and the other end of the resistance rod 33 can resist the bevel surface on the top of the slider 23 to push the slider 23 to move to the left. The slider 23 can push the clamping rod 24 to move upward through the support rod 25, so that the clamping rod 24 can no longer be stuck on the conical tooth 27, thereby releasing the limit on the disc 21, and then the valve stem 102 can be rotated.

[0024] After the resistance rod 33 is released, under the action of the connecting spring 34, the resistance rod 33 is reset and no longer resists the slider 23. Under the action of the reset spring 28, the slider 23 is reset, and the slider 23 pushes the clamping rod 24 downward through the support rod 25 and reinserts it into the conical tooth 27, thereby limiting the disc 21 and preventing the valve stem 102 from rotating, thereby achieving a locking effect.

[0025] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A butterfly valve that is convenient to lock, comprising a butterfly valve (1), characterized in that: The butterfly valve (1) is composed of a valve body (101), a valve stem (102) and a valve plate (103); a locking assembly arranged on the top of the valve body (101) and the valve stem (102), the locking assembly comprising a limiting portion (2) for limiting the position of the valve stem (102) and a control portion (3) for controlling the limiting portion (2); The limiting portion (2) is arranged at the top of the valve body (101), and the control portion (3) is arranged at the top of the valve stem (102).

2. A convenient locking butterfly valve according to claim 1, characterized in that: The limiting portion (2) comprises a disc (21), the disc (21) is penetrated by the valve stem (102) and is fixedly connected to the valve stem (102), a slide groove (22) is provided on the top of the disc (21), a slider (23) is slidably installed on the inner side of the slide groove (22), and a return spring (28) is fixed on the inner side of the slide groove (22).

3. A convenient locking butterfly valve according to claim 2, characterized in that: A clamping rod (24) is slidably installed on the inner side of the slide groove (22); a support rod (25) is hingedly connected to the side of the slider (23) away from the return spring (28); one end of the support rod (25) away from the slider (23) is hingedly connected to the clamping rod (24); a groove (26) is provided on the top of the valve body (101); a conical tooth (27) is fixed on the inner side of the groove (26).

4. A convenient locking butterfly valve according to claim 1, characterized in that: The control part (3) comprises a handle (31), wherein the handle (31) is fixed to the top of the valve stem (102), a connecting column (32) is fixed to the bottom of the handle (31), a resistance rod (33) is hingedly connected to the inner side of the connecting column (32), a connecting spring (34) is fixed to the top of the resistance rod (33), and one end of the connecting spring (34) away from the resistance rod (33) is fixed to the bottom of the handle (31).

5. A convenient locking butterfly valve according to claim 4, characterized in that: The abutment rod (33) is in an inverted V shape.

6. A convenient locking butterfly valve according to claim 2, characterized in that: The top of the sliding block (23) is provided with a chamfered surface.

Images