A gate valve with a double structure

Abstract

This utility model discloses a gate valve with a double-connection structure, relating to the field of valve technology. The utility model includes a valve body, with valve stem bodies rotatably connected to both sides of the valve body. A limiting disc is fixedly connected to the outer ring of the valve stem body on the side furthest from the valve body. The limiting disc has several annularly distributed limiting holes near its outer ring. A mounting box is fixedly connected to the outer side of the valve body, located at the center between the two valve stem bodies. Limiting grooves are formed on the side of the mounting box near the valve stem body. This utility model, through the working motor and the mutual cooperation between magnetic blocks one and two, the limiting shaft, the limiting holes, and the spring, prevents the valve stem body from becoming slightly loose due to the pipeline system during operation. This solves the problem of handwheel loosening, which makes precise control of the valve opening difficult and causes a discrepancy between the actual and set valve opening.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a gate valve with a double-connection structure. Background Technology

[0002] In modern industrial pipeline systems and civil water supply and drainage systems, gate valves are core components for controlling fluid flow and regulating flow. The reliability of their performance and the stability of their operation are of paramount importance. Double gate valves are widely used in petrochemical, power energy, and urban water supply fields due to their advantages such as dual-path control, easy switching and redundant design.

[0003] Currently, some gate valves lack an effective locking mechanism for their handwheels, making it impossible for operators to reliably limit the handwheel's position after adjustment. This causes the handwheel to become slightly loose after vibrations from the pipeline system. Once the handwheel loosens, the valve opening becomes difficult to control precisely, resulting in a discrepancy between the actual and set opening. This is especially problematic in fluid control of chemical reaction processes or precision experimental equipment where precise flow control is required. Such minute deviations in handwheel rotation can lead to uncontrolled reaction conditions, skewed experimental data, or even safety accidents. To address these issues, the inventors have proposed a gate valve with a double-joint structure. Utility Model Content

[0004] To address the problem that a loose handwheel makes it difficult to precisely control the valve opening, resulting in a discrepancy between the actual and set valve opening, the purpose of this invention is to provide a gate valve with a double-joint structure.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a gate valve with a double-joint structure, including a valve body, on both sides of the valve body, valve stem bodies are rotatably connected, a limiting disc is fixedly connected to the outer ring of the valve stem body and the side away from the valve body, the limiting disc has a plurality of annularly distributed limiting holes inside near the outer ring, a mounting box is fixedly connected to the outer side of the valve body and the center between the two valve stem bodies, a limiting groove is opened on the side of the mounting box near the valve stem body, a sliding plate is slidably connected inside the limiting groove, a limiting shaft is fixedly connected to the end of the sliding plate near the limiting disc and near the center, and the limiting shaft and the limiting hole are at the same level.

[0006] Preferably, a rotating wheel is fixedly connected to the end of the valve stem body away from the valve body body, and a lead screw is rotatably connected between the inner walls of both sides of the mounting box and at the center.

[0007] Preferably, a motor is fixedly connected to the end of the mounting box away from the valve body and located at the center. The output end of the motor passes through the mounting box and is fixedly connected to the lead screw. Guide shafts are symmetrically fixedly connected to the inner wall of the mounting box near the lead screw. A mounting plate is slidably connected between the two guide shafts, and the mounting plate is threadedly rotatably connected to the lead screw.

[0008] Preferably, a second magnetic block is fixedly connected to the center of the side end of the sliding plate near the lead screw, and a first magnetic block is fixedly connected to the end of the mounting plate near the second magnetic block, and the first magnetic block and the second magnetic block are at the same level.

[0009] Preferably, a guide telescopic rod is fixedly connected to one end of the sliding plate away from the valve body and inside the mounting box, and the other end of the guide telescopic rod is fixedly connected to the inner wall of the mounting box. A spring is fixedly connected to one end of the sliding plate and sleeved on the outer ring of the guide telescopic rod, and the other end of the spring is fixedly connected to the inner wall of the mounting box.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] In this invention, the working motor, along with the cooperation between magnetic block one and magnetic block two, as well as the limiting shaft, limiting hole, and spring, prevents the valve stem body from becoming slightly loose due to the influence of the pipeline system during operation. This solves the problem that if the handwheel becomes loose, the valve opening will be difficult to control precisely, resulting in a discrepancy between the actual valve opening and the set opening. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the limiting disc structure of this utility model.

[0015] Figure 3 This is a cross-sectional view of the mounting box of this utility model.

[0016] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Valve body; 2. Valve stem body; 21. Rotating wheel; 22. Limiting disc; 23. Limiting hole; 3. Mounting box; 31. Lead screw; 32. Guide shaft; 33. Mounting plate; 34. Magnetic block one; 35. Motor; 36. Limiting groove; 37. Sliding plate; 38. Limiting shaft; 39. Magnetic block two; 4. Guide telescopic rod; 41. Spring. Detailed Implementation

[0018] 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.

[0019] Example: Figure 1-4 As shown, this utility model provides a technical solution: a gate valve with a double-connected structure, including a valve body 1, with valve stem bodies 2 rotatably connected to both sides of the valve body 1. The two valve stem bodies 2 are distributed at a perpendicular angle. A limiting plate 22 is fixedly connected to the outer ring of the valve stem body 2 on the side away from the valve body 1. The limiting plate 22 has multiple limiting holes 23 inside, which can complete the limiting work of the valve stem body 2. Several annularly distributed limiting holes 23 are opened inside the limiting plate 22 near the outer ring. A mounting box 3 is fixedly connected to the outer side of the valve body 1 and at the center between the two valve stem bodies 2. The mounting box 3 has an irregular shape (as shown in the figure). Each end of the mounting box 3 near the valve stem body 2 has a limiting groove 36. A sliding plate 37 is slidably connected inside the limiting groove 36. A limiting shaft 38 is fixedly connected to one end of the sliding plate 37 near the limiting disc 22 and near the center. The limiting shaft 38 is at the same level as the limiting hole 23. The limiting shaft 38 can be inserted into the limiting hole 23. The electrical components in this application and their compatible power supply are electrically connected through wires. A suitable controller should be selected according to the actual situation to meet the control requirements. The detailed connection method is a well-known technology in this field.

[0020] A rotating wheel 21 is fixedly connected to the end of the valve stem body 2 away from the valve body body 1.

[0021] By adopting the above technical solution, the outer surface of the rotating wheel 21 is provided with anti-slip texture, which makes it easy for workers to apply force to rotate it.

[0022] A lead screw 31 is rotatably connected between the inner walls of both sides of the mounting box 3 and at the center.

[0023] By adopting the above technical solution, the lead screw 31 is installed at an inclined angle, which facilitates the horizontal movement of the mounting plate 33.

[0024] A motor 35 is fixedly connected to the end of the mounting box 3 away from the valve body 1 and located at the center. The output end of the motor 35 passes through the mounting box 3 and is fixedly connected to the lead screw 31.

[0025] By adopting the above technical solution, the motor 35 is installed at the same level as the lead screw 31. When the motor 35 is started, the fixedly connected lead screw 31 rotates.

[0026] A guide shaft 32 is symmetrically fixedly connected to the inner wall of the mounting box 3 near the lead screw 31. A mounting plate 33 is slidably connected between the two guide shafts 32, and the mounting plate 33 is threadedly connected to the lead screw 31.

[0027] By adopting the above technical solution, a guide shaft 32 is set near the lead screw 31 to facilitate the movement of the mounting plate 33.

[0028] A magnetic block 39 is fixedly connected to the center of the side end of the sliding plate 37 near the lead screw 31.

[0029] By adopting the above technical solution, a second magnetic block 39 is set on the sliding plate 37 near the lead screw 31 so that the limiting shaft 38 can be moved under the action of the first magnetic block 34.

[0030] One magnetic block 34 is fixedly connected to one end of the mounting plate 33 near the second magnetic block 39, and the first magnetic block 34 and the second magnetic block 39 are at the same level.

[0031] By adopting the above technical solution, magnetic block 34 is set so that it can work with magnetic block 39 to drive the two sliding plates 37 to move synchronously.

[0032] A guide telescopic rod 4 is fixedly connected to one end of the sliding plate 37 away from the valve body 1 and inside the mounting box 3, and the other end of the guide telescopic rod 4 is fixedly connected to the inner wall of the mounting box 3. A spring 41 is fixedly connected to one end of the sliding plate 37 and sleeved on the outer ring of the guide telescopic rod 4, and the other end of the spring 41 is fixedly connected to the inner wall of the mounting box 3.

[0033] By adopting the above technical solution, and setting spring 41 and guide telescopic rod 4, the effect of inserting the limiting shaft 38 into the limiting hole 23 can be achieved. The spring 41 needs to be selected according to the elasticity required by the actual needs.

[0034] Working principle: When this device is in use, after the two rotating wheels 21 rotate to the working angle, the motor 35 can be started to make the fixedly connected screw 31 rotate, thereby causing the threaded rotating connected mounting plate 33 to drive the two magnetic blocks 34 to move towards the motor 35 under the action of the two guide shafts 32. At this time, the limiting effect on the magnetic block 39 will be released, and its sliding plate 37 and limiting shaft 38 will be inserted into the limiting hole 23 under the action of the guide telescopic rod 4 and the spring 41, thus completing the limiting work of the valve stem body 2.

[0035] When the rotating wheel 21 needs to be rotated, the reverse working motor 35 causes the mounting plate 33 to move away from the motor 35 along with the two magnetic blocks 34. At this time, the sliding plate 37 will be driven by the magnetic block 39 (magnetic block 39 and magnetic block 34 attract each other) to move the limiting shaft 38 away from the limiting hole 23, so as to release the limiting work on the valve stem body 2. Then the rotating wheel 21 on the valve stem body 2 can be rotated, thereby preventing the valve stem body 2 from becoming slightly loose due to the influence of the pipeline system during operation.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A shut-off valve with a double-ended structure, comprising a valve body (1), characterized in that: The valve body (1) is rotatably connected to both sides of the valve stem body (2). A limiting plate (22) is fixedly connected to the outer ring of the valve stem body (2) and the side away from the valve body body (1). Several annularly distributed limiting holes (23) are opened inside the limiting plate (22) near the outer ring. A mounting box (3) is fixedly connected to the outside of the valve body (1) and at the center between the two valve stem bodies (2). A limiting groove (36) is provided on one side of the mounting box (3) near the valve stem body (2). A sliding plate (37) is slidably connected inside the limiting groove (36). A limiting shaft (38) is fixedly connected to one end of the sliding plate (37) near the center of the limiting plate (22), and the limiting shaft (38) is at the same level as the limiting hole (23). A lead screw (31) is rotatably connected between the inner walls of both sides of the mounting box (3) at the center. Guide shafts are symmetrically fixedly connected to the inner wall of the mounting box (3) near the lead screw (31). 32), a mounting plate (33) is slidably connected between the two guide shafts (32), and the mounting plate (33) is threadedly connected to the lead screw (31). A magnetic block (39) is fixedly connected to the center of the side end of the sliding plate (37) near the lead screw (31). A guide telescopic rod (4) is fixedly connected to the end of the sliding plate (37) away from the valve body (1) and inside the mounting box (3). The other end of the guide telescopic rod (4) is fixedly connected to the inner wall of the mounting box (3). A spring (41) is fixedly connected to one end of the sliding plate (37) and sleeved on the outer ring of the guide telescopic rod (4). The other end of the spring (41) is fixedly connected to the inner wall of the mounting box (3).

2. A shut-off valve with a double-joint structure as described in claim 1, characterized in that, A rotating wheel (21) is fixedly connected to the side end of the valve stem body (2) away from the valve body body (1).

3. A shut-off valve with a double-joint structure as described in claim 1, characterized in that, A motor (35) is fixedly connected to one end of the mounting box (3) away from the valve body (1) and at the center. The output end of the motor (35) passes through the mounting box (3) and is fixedly connected to the lead screw (31).

4. A shut-off valve with a double-joint structure as described in claim 1, characterized in that, The mounting plate (33) is fixedly connected to a magnetic block (34) at one end near the magnetic block (39).

Images