Mechanical control device for valve switch

Abstract

The utility model relates to the technical field of valves, in particular to a mechanical control device for a valve switch, which comprises a gate valve body, a hand wheel, a fixing structure and a clamping structure, the top of the gate valve body is rotatably connected with the hand wheel, the outer wall of the left end of the gate valve body is fixedly connected with a fixing seat, and an inserting rod is slidably connected with the hand wheel and the fixing seat. The outer wall of the right end of the gate valve body is fixedly connected with a supporting rod, the top of the supporting rod is fixedly connected with a first clamping plate, the left end and the right end of the top of the first clamping plate are fixedly connected with limiting rods, and the middle of the top of the first clamping plate is fixedly connected with a fixing rod. The limiting rod and the fixing rod are slidably connected with the second clamping plate, the top of the fixing rod is rotationally connected with a limiting base, and the rear end of the limiting base is fixedly connected with a pressing plate. The hand wheel is provided with the clamping structure, so that the hand wheel can be fixed, and mistaken touch caused by the fact that an operator does not know the on-off state is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a mechanical control device for valve switching. Background Technology

[0002] A gate valve is a type of valve that controls the flow of fluid in a pipeline by vertically raising and lowering a gate. It is mainly used to cut off fluid flow in a fully open or fully closed state and is not suitable for flow regulation.

[0003] However, existing gate valves often lack the function of fixing the handwheel, which can easily lead to accidental operation by operators, causing unnecessary accidents and property damage. Furthermore, existing gate valves often lack the function of fixing the starting position, which can easily cause leakage when closed, reducing the safety during use. Therefore, there is an urgent need for a mechanical control device for valve opening and closing to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a mechanical control device for valve switching, so as to solve the problems mentioned in the background art that existing gate valves often do not have the function of fixing the handwheel, which can easily cause operators to accidentally touch it, and existing gate valves often do not have the function of fixing the starting position, which can easily cause leakage when closing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical control device for valve switching, comprising a gate valve body, a handwheel, a fixing structure, and a clamping structure. The handwheel is rotatably connected to the top of the gate valve body. The fixing structure includes a fixing seat and a plug rod. The fixing seat is fixedly connected to the outer wall of the left end of the gate valve body. The plug rod is slidably connected to the handwheel and the fixing seat. The bottom ends of the fixing seat and the plug rod are slidably connected to pins. The clamping structure includes a support rod. The support rod is fixedly connected to the outer wall of the right end of the gate valve body. A clamping plate is fixedly connected to the top of the support rod. Limiting rods are fixedly connected to the left and right ends of the top of the clamping plate. A fixing rod is fixedly connected to the middle of the top of the clamping plate. The limiting rod and the fixing rod are slidably connected to a clamping plate. A limiting seat is rotatably connected to the top of the fixing rod. A pressing plate is fixedly connected to the rear end of the limiting seat.

[0006] Preferably, the front end of the pin is provided with a pull ring, and the rear end of the pin is engaged with a pin.

[0007] Preferably, a pull ring is fixedly connected to the top of the insertion rod, and the surface of the pull ring is provided with an anti-slip coating.

[0008] Preferably, rubber pads are fixedly connected to the outer walls of both the first clamping plate and the second clamping plate, and the surface of the rubber pads is provided with uneven patterns.

[0009] Preferably, a limiting plate is fixedly connected to the top of the limiting rod, and the diameter of the limiting plate is larger than the diameter of the limiting rod.

[0010] Preferably, a spring is fitted on the limiting rod, with one end of the spring abutting against the outer wall of the first clamping plate and the other end of the spring abutting against the outer wall of the second clamping plate.

[0011] Preferably, the limiting seat is rectangular, with a rotating groove at the bottom and rounded corners at the rear end.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The mechanical control device for valve switching is equipped with a fixed structure. When it is necessary to unlock the handwheel, the pin of the pivot is removed so that the pin is no longer fixing the position of the pivot. Pulling the pull ring of the pivot pulls the pivot out so that the pivot is no longer fixing the position of the insertion rod. Pulling the pull ring pulls the insertion rod out of the fixed seat so that the insertion rod is no longer fixing the position of the handwheel. The fixed structure can lock the starting position of the handwheel, thereby preventing leakage when the valve is closed and improving the safety during use.

[0014] 2. This mechanical control device for valve switching is equipped with a clamping structure. Turning the handwheel opens the gate valve body. When it is necessary to fix the position of the handwheel, press the pressing plate, causing the pressing plate to rotate the limit seat from the horizontal direction to the vertical direction. The limit seat presses down on the clamping plate two, causing the spring to contract under pressure. This clamping plate one and clamping plate two clamp the handwheel, fixing its position. The clamping structure can fix the handwheel, preventing unnecessary accidents and property damage caused by accidental operation after the gate valve body is opened. Attached Figure Description

[0015] Figure 1 This is a front perspective view of the present utility model;

[0016] Figure 2 This is a schematic diagram illustrating the use of this utility model;

[0017] Figure 3 This is a schematic diagram of the clamping structure of this utility model in use;

[0018] Figure 4 This is a three-dimensional front view of the clamping structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the exploded structure of the clamping structure of this utility model.

[0020] In the diagram: 1. Gate valve body; 2. Handwheel; 3. Fixing structure; 31. Fixing seat; 32. Insert rod; 33. Pull ring; 34. Pin; 4. Clamping structure; 41. Support rod; 42. Clamping plate one; 43. Clamping plate two; 44. Rubber pad; 45. Limiting rod; 46. Limiting plate; 47. Spring; 48. Fixing rod; 49. Limiting seat; 410. Pressing plate. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 This utility model provides an embodiment of a mechanical control device for valve switching, comprising a gate valve body 1, a handwheel 2, a fixing structure 3, and a clamping structure 4. The handwheel 2 is rotatably connected to the top of the gate valve body 1. The fixing structure 3 includes a fixing seat 31 and a rod 32. The fixing seat 31 is fixedly connected to the outer wall of the left end of the gate valve body 1. The rod 32 is slidably connected to the handwheel 2 and the fixing seat 31. The bottom ends of the fixing seat 31 and the rod 32 are slidably connected to a pin 34. The clamping structure 4 includes a support rod 41. The support rod 41 is fixedly connected to the outer wall of the right end of the gate valve body 1. The top of the gate valve body 1 is fixedly connected to a clamping plate 42. The left and right ends of the top of the clamping plate 42 are fixedly connected to limiting rods 45. The middle of the top of the clamping plate 42 is fixedly connected to a fixing rod 48. The limiting rods 45 and the fixing rods 48 are slidably connected to a clamping plate 43. The top of the fixing rods 48 is rotatably connected to a limiting seat 49. The rear end of the limiting seat 49 is fixedly connected to a pressing plate 410. The clamping structure 4 can fix the handwheel 2 at any angle, preventing accidental contact caused by the operator's lack of knowledge of the switch status after the gate valve body 1 is opened, thus avoiding unnecessary accidents and property losses.

[0023] Furthermore, a pull ring is provided at the front end of the pin 34, and a pin is engaged at the rear end of the pin 34. The pin of the pin 34 is removed so that the pin no longer fixes the position of the pin 34. The pull ring of the pin 34 is pulled out so that the pin no longer fixes the position of the insertion rod 32.

[0024] Furthermore, a pull ring 33 is fixedly connected to the top of the insertion rod 32. The surface of the pull ring 33 is provided with an anti-slip coating. Pulling the pull ring 33 will pull the insertion rod 32 out of the fixed seat 31, so that the insertion rod 32 is no longer fixed to the position of the handwheel 2. The anti-slip coating prevents slippage when pulling the pull ring 33, making the pull ring 33 easier to hold.

[0025] Furthermore, rubber pads 44 are fixedly connected to the outer walls of clamping plate 42 and clamping plate 43. The surface of the rubber pads 44 is provided with uneven patterns. The rubber pads 44 can increase the friction between clamping plate 42 and clamping plate 43 and handwheel 2. The uneven surface can increase the contact area between the rubber pads 44 and handwheel 2, thereby improving the stability during clamping.

[0026] Furthermore, a limiting plate 46 is fixedly connected to the top of the limiting rod 45. The diameter of the limiting plate 46 is larger than the diameter of the limiting rod 45. The limiting plate 46 plays a limiting role, preventing the limiting rod 45 from disengaging from the clamp 43 and improving the stability during movement.

[0027] Furthermore, a spring 47 is fitted on the limiting rod 45. One end of the spring 47 abuts against the outer wall of the first clamping plate 42, and the other end of the spring 47 abuts against the outer wall of the second clamping plate 43. The limiting seat 49 presses the second clamping plate 43 downward, causing the spring 47 to contract under pressure.

[0028] Furthermore, the limiting seat 49 is rectangular and has a rotating groove at the bottom and rounded corners at the rear end, so that the pressing plate 410 drives the limiting seat 49 to rotate from the horizontal direction to the vertical direction, so that the limiting seat 49 presses the clamping plate 43 downward.

[0029] Working principle: When unlocking handwheel 2, remove the pin of pin 34 so that pin 34 is no longer fixed in position. Pull the pull ring of pin 34 to pull out pin 34, so that pin 34 is no longer fixed in position of insertion rod 32. Pull the pull ring 33 to pull insertion rod 32 out of fixed seat 31, so that insertion rod 32 is no longer fixed in position of handwheel 2. The starting position of handwheel 2 can be locked by fixing structure 3, thereby preventing leakage when the valve is closed and improving safety during use. Turning handwheel 2 will open the gate. When it is necessary to fix the position of the handwheel 2, press the pressing plate 410 to make the pressing plate 410 drive the limit seat 49 to rotate, so that the limit seat 49 rotates from the horizontal direction to the vertical direction, and the limit seat 49 presses down the clamping plate 43, so that the spring 47 is compressed by pressure, and the clamping plate 42 and the clamping plate 43 clamp the handwheel 2, fixing the position of the handwheel 2. The clamping structure 4 can fix the handwheel 2 to prevent unnecessary accidents and property damage caused by accidental contact by the operator after the gate valve body 1 is opened.

[0030] 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 mechanical control device for valve switching, comprising a gate valve body (1), a handwheel (2), a fixing structure (3), and a clamping structure (4), characterized in that: The top of the gate valve body (1) is rotatably connected to a handwheel (2). The fixing structure (3) includes a fixing seat (31) and a plug rod (32). The fixing seat (31) is fixedly connected to the outer wall of the left end of the gate valve body (1). The plug rod (32) is slidably connected to the handwheel (2) and the fixing seat (31). The bottom ends of the fixing seat (31) and the plug rod (32) are slidably connected to a pin (34). The clamping structure (4) includes a support rod (41). The outer wall of the right end of the gate valve body (1) is fixedly connected to... A support rod (41) is connected to a clamping plate (42) at the top of the support rod (41). Limiting rods (45) are fixedly connected to the left and right ends of the top of the clamping plate (42). A fixing rod (48) is fixedly connected to the middle of the top of the clamping plate (42). The limiting rod (45) and the fixing rod (48) are slidably connected to a clamping plate (43). The top of the fixing rod (48) is rotatably connected to a limiting seat (49). The rear end of the limiting seat (49) is fixedly connected to a pressing plate (410).

2. The mechanical control device for valve switching according to claim 1, characterized in that: The front end of the pin (34) is provided with a pull ring, and the rear end of the pin (34) is engaged with a pin.

3. The mechanical control device for valve switching according to claim 1, characterized in that: A pull ring (33) is fixedly connected to the top of the insertion rod (32), and the surface of the pull ring (33) is provided with an anti-slip coating.

4. The mechanical control device for valve switching according to claim 1, characterized in that: Rubber pads (44) are fixedly connected to the outer walls of the first clamp (42) and the second clamp (43), and the surface of the rubber pads (44) is provided with uneven patterns.

5. The mechanical control device for valve switching according to claim 1, characterized in that: The top of the limiting rod (45) is fixedly connected to the limiting plate (46), and the diameter of the limiting plate (46) is larger than the diameter of the limiting rod (45).

6. The mechanical control device for valve switching according to claim 1, characterized in that: A spring (47) is fitted on the limiting rod (45). One end of the spring (47) abuts against the outer wall of the first clamping plate (42), and the other end of the spring (47) abuts against the outer wall of the second clamping plate (43).

7. The mechanical control device for valve switching according to claim 1, characterized in that: The limiting seat (49) is rectangular, with a rotating groove at the bottom and rounded corners at the rear end.

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