Hydraulic valve capable of adjusting output torque

Abstract

The utility model discloses a hydraulic valve capable of adjusting output torque, which comprises a valve body, the inner wall of the valve body is rotatably connected with a valve rod, the outer wall of the valve rod is fixedly connected with a valve plate, two side walls of the valve body are respectively provided with a flange plate, the upper end of the valve body is fixedly connected with a connecting seat, one side wall of the connecting seat is embedded with a fixing plate, and the fixing plate is fixedly connected with the valve rod. An adjusting groove is formed in the fixing plate, a hydraulic cylinder is installed on the inner wall of the adjusting groove, two guide rods are fixedly connected to the inner wall of the hydraulic cylinder, a piston is jointly connected to the two guide rods in a sliding mode, a moving rod is fixedly connected to one end of the piston, and the other end of the moving rod penetrates through the hydraulic cylinder and is fixedly connected with a moving block. The hydraulic cylinder, the rack, the gear and other structures are arranged, movement of the piston is controlled through work of the hydraulic cylinder, then the driving force of the rack to the gear is adjusted, and torque adjustment during valve opening and closing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a hydraulic valve with adjustable output torque. Background Technology

[0002] A valve is a device used to control the gas, liquid, and gas or liquid containing solid powder in various pipelines and equipment. The valve drive mechanism is a device used to control the opening and closing of the valve. It can transfer the energy of the power source to the valve to achieve precise operation of the valve. Its main types include manual drive, electric drive, pneumatic drive and hydraulic drive.

[0003] However, the output torque of valve actuators is usually fixed or has a very limited adjustment range. When faced with complex and changing working conditions, such as different pipeline pressures, fluid medium characteristics, and flow requirements, valve actuators with fixed torque are difficult to adapt flexibly. Therefore, we need to consider how to solve this problem. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydraulic valve with adjustable output torque. This valve is equipped with a hydraulic cylinder, rack and pinion, and gears. The movement of the piston is controlled by the operation of the hydraulic cylinder, which in turn adjusts the driving force of the rack on the gears, thereby achieving adjustment of the torque when the valve is opened and closed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable output torque hydraulic valve includes a valve body, a valve stem rotatably connected to the inner wall of the valve body, a valve plate fixedly connected to the outer wall of the valve stem, flanges installed on both side walls of the valve body, a connecting seat fixedly connected to the upper end of the valve body, a fixing plate embedded in one side wall of the connecting seat, an adjusting groove formed in the fixing plate, a hydraulic cylinder installed on the inner wall of the adjusting groove, two guide rods fixedly connected to the inner wall of the hydraulic cylinder, a piston slidably connected to both guide rods, a moving rod fixedly connected to one end of the piston, the other end of the moving rod passing through the hydraulic cylinder and fixedly connected to a moving block, a rack fixedly connected to the other end of the moving block, a gear fixedly connected to the outer wall of the valve stem, the gear and rack meshing, and two oil ports opened at the upper end of the hydraulic cylinder.

[0007] Preferably, the upper end of the valve stem passes through the connecting seat and extends to the outside, and a knob is fixedly connected to the upper end of the valve stem.

[0008] Preferably, the outer wall of the knob is provided with a protective layer, which is made of rubber.

[0009] Preferably, the inner walls on both sides of the valve body are provided with movable grooves, and a ball is provided in each of the two movable grooves. Connecting rods are fixedly connected to both sides of the valve plate, and the other end of each of the two connecting rods is fixedly connected to the corresponding ball.

[0010] Preferably, the inner bottom of both movable slots is provided with a sliding groove, the inner wall of both sliding grooves is slidably connected with a slider, and the lower end of both sliders is elastically connected to the inner wall of the corresponding sliding groove by a spring.

[0011] Preferably, the upper ends of both sliders are fixedly connected to limit rods, and the lower ends of both spheres are provided with limit grooves that cooperate with the corresponding limit rods.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. The system is equipped with a piston, rack, and gear structure. The movement of the piston is controlled by a hydraulic cylinder. The piston drives the rack to move, and the rack meshes with the gear to drive the valve stem to rotate. This converts the linear motion of the hydraulic cylinder into the rotational motion of the valve stem, thereby adjusting the torque when the valve is opened and closed and meeting the requirements for valve flow control under different working conditions.

[0014] 2. The structure includes a ball, slider, and spring. When the valve is closed, the elastic force provided by the spring assists the limit rod in limiting the ball, ensuring that the valve plate is in the accurate closed position and guaranteeing the valve's sealing performance. Furthermore, the elastic force of the spring allows the limit rod to be tightly embedded in the limit groove of the ball, maintaining the stability of the valve plate's position and preventing media leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the hydraulic valve with adjustable output torque proposed in this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the first upper section;

[0017] Figure 3 for Figure 2 Enlarged view of point A;

[0018] Figure 4 for Figure 1 A schematic diagram of the front cross-section;

[0019] Figure 5 for Figure 4 Enlarged view of point B;

[0020] Figure 6 for Figure 1 A schematic diagram of the upper part;

[0021] Figure 7 for Figure 1 The second upper section diagram.

[0022] In the diagram: 1 Valve body, 2 Valve stem, 3 Valve plate, 4 Flange, 5 Connecting seat, 6 Fixing plate, 7 Adjusting groove, 8 Hydraulic cylinder, 9 Guide rod, 10 Piston, 11 Moving rod, 12 Moving block, 13 Rack, 14 Gear, 15 Oil port, 16 Knob, 17 Moving groove, 18 Ball, 19 Connecting rod, 20 Slide groove, 21 Slider, 22 Spring, 23 Limiting rod, 24 Limiting groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-7 A hydraulic valve with adjustable output torque includes a valve body 1, a valve stem 2 rotatably connected to the inner wall of the valve body 1, a valve plate 3 fixedly connected to the outer wall of the valve stem 2, flanges 4 installed on both side walls of the valve body 1 for pipe connections, etc., a connecting seat 5 fixedly connected to the upper end of the valve body 1, a fixing plate 6 embedded in one side wall of the connecting seat 5, an adjusting groove 7 opened in the fixing plate 6, a hydraulic cylinder 8 installed on the inner wall of the adjusting groove 7, two guide rods 9 fixedly connected to the inner wall of the hydraulic cylinder 8, a piston 10 slidably connected to the two guide rods 9, the two guide rods 9 restrict the movement direction of the piston 10, making the piston 10 more stable during movement, a moving rod 11 fixedly connected to one end of the piston 10, the other end of the moving rod 11 passing through the hydraulic cylinder 8 and fixedly connected to a moving block 12, a rack 13 fixedly connected to the other end of the moving block 12, and a gear 14 fixedly connected to the outer wall of the valve stem 2.

[0025] In this system, gear 14 and rack 13 mesh, and through the operation of hydraulic cylinder 8, the movement of piston 10 can be controlled, thereby adjusting the driving force of rack 13 on gear 14. Since gear 14 is fixedly connected to valve stem 2, the torque can be adjusted when the valve is opened and closed, meeting the requirements for valve flow control under different working conditions. Two oil ports 15 are opened at the upper end of hydraulic cylinder 8, and a round hole that mates with the corresponding oil port 15 is opened at the upper end of fixed plate 6. In use, the two oil ports 15 are connected to oil pipelines respectively to realize the sliding of piston 10, thereby controlling the extension and retraction of moving rod 11. The upper end of valve stem 2 passes through connecting seat 5 and extends to the outside. A knob 16 is fixedly connected to the upper end of valve stem 2. The outer wall of knob 16 is provided with a protective layer made of rubber. In some special cases, such as hydraulic system failure or when fine adjustment is required, the operator can directly drive valve stem 2 to rotate by rotating knob 16, thereby controlling the position of valve plate 3 and realizing the opening or closing of valve.

[0026] The valve body 1 has two inner walls with movable grooves 17 on both sides, and each movable groove 17 contains a ball 18. Connecting rods 19 are fixedly connected to both sides of the valve plate 3, and the other ends of the connecting rods 19 are fixedly connected to the corresponding balls 18. Sliding grooves 20 are provided at the bottom of each movable groove 17, and sliders 21 are slidably connected to the inner walls of each sliding groove 20. The lower ends of each slider 21 are elastically connected to the inner walls of the corresponding sliding grooves 20 via springs 22. Limiting rods 23 are fixedly connected to the upper ends of each slider 21. Limiting grooves 24 that cooperate with the corresponding limiting rods 23 are provided at the lower ends of each ball 18. When the valve is closed, the elastic force provided by the springs 22 assists the limiting rods 23 in limiting the balls 18, ensuring that the valve plate 3 is in an accurate closed position and guaranteeing the valve's sealing performance. Simultaneously, during valve opening, the limiting structure also restricts the range of motion of the balls 18, keeping the opening angle of the valve plate 3 within a reasonable range and preventing damage to the valve structure due to over-opening.

[0027] In this invention, during use, the hydraulic system is connected to two oil ports 15 via two oil lines. When the hydraulic system is working, pressurized oil enters the hydraulic cylinder 8 from one of the oil ports 15. Under pressure, the oil in the hydraulic cylinder 8 pushes the piston 10 to move smoothly in a straight line along the guide rod 9, thereby causing the moving rod 11 to move synchronously. At this time, the other oil port 15 serves as the return port, and the oil flows back to the hydraulic system oil tank from this oil port 15. The movement of the moving rod 11 causes the rack 13 to move through the moving block 12. The movement of the rack 13 causes the gear 14 meshing with it to rotate, thereby driving the valve stem 2 to rotate. By controlling the pressure of the hydraulic system output oil, the force pushing the piston 10 can be changed. The greater the pressure, the greater the thrust of the piston 10 on the rack 13, and the greater the driving force transmitted by the rack 13 to the gear 14. Ultimately, the torque of the valve stem 2 can be adjusted. Under different working conditions, according to the valve flow control requirements, the hydraulic system adjusts the output pressure to allow the valve to obtain the appropriate torque during opening and closing.

[0028] As the valve plate 3 gradually closes with the rotation of the valve stem 2, the ball 18 moves synchronously with the valve plate 3. When the valve plate 3 is closed, the limiting groove 24 aligns with the limiting rod 23. At this time, the spring 22 provides an upward elastic force to assist the limiting rod 23 in embedding into the limiting groove 24, limiting the ball 18 and ensuring that the valve plate 3 is in an accurate closed position, thereby ensuring the valve's sealing performance. When the valve stem 2 drives the valve plate 3 to open, the ball 18 moves within the moving groove 17. The limiting rod 23 always contacts the lower end of the ball 18, limiting the range of movement of the ball 18. As the valve plate 3 opens, the spring 22 is gradually compressed. Due to the cooperation of the limiting rod 23 and the limiting groove 24, as well as the elastic effect of the spring 22, the opening angle of the valve plate 3 is controlled within a reasonable range, avoiding damage to the valve structure due to excessive opening.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Hydraulic valve with adjustable output torque, comprising a valve body (1), characterized in that, The inner wall of the valve body (1) is rotationally connected with a valve rod (2), the outer wall of the valve rod (2) is fixedly connected with a valve plate (3), the two side walls of the valve body (1) are both provided with a flange plate (4), the upper end of the valve body (1) is fixedly connected with a connecting seat (5), one side wall of the connecting seat (5) is embedded with a fixed plate (6), the fixed plate (6) is provided with an adjusting groove (7) in it, the inner wall of the adjusting groove (7) is provided with a hydraulic cylinder (8), the inner wall of the hydraulic cylinder (8) is fixedly connected with two guide rods (9), the two guide rods (9) are both slidably connected with a piston (10), one end of the piston (10) is fixedly connected with a moving rod (11), the other end of the moving rod (11) penetrates through the hydraulic cylinder (8) and is fixedly connected with a moving block (12), the other end of the moving block (12) is fixedly connected with a rack (13), the outer wall of the valve rod (2) is fixedly connected with a gear (14), the gear (14) is engaged with the rack (13), and the upper end of the hydraulic cylinder (8) is provided with two oil ports (15).

2. The adjustable output torque hydraulic valve of claim 1, wherein, The upper end of the valve rod (2) penetrates through the connecting seat (5) and extends to the outside, and the upper end of the valve rod (2) is fixedly connected with a knob (16).

3. The adjustable output torque hydraulic valve of claim 2, wherein, The outer wall of the knob (16) is provided with a protective layer made of rubber material.

4. The adjustable output torque hydraulic valve of claim 1, wherein, The two inner walls of the valve body (1) are both provided with a moving groove (17), and the two moving grooves (17) are both provided with a ball (18), the two side walls of the valve plate (3) are both fixedly connected with a connecting rod (19), and the other end of the two connecting rods (19) is fixedly connected with the corresponding ball (18).

5. The adjustable output torque hydraulic valve of claim 4, wherein, The inner bottom of the two moving grooves (17) is both provided with a sliding groove (20), the inner wall of the two sliding grooves (20) is both slidably connected with a sliding block (21), and the lower end of the two sliding blocks (21) is elastically connected with the inner wall of the corresponding sliding groove (20) through a spring (22).

6. The adjustable output torque hydraulic valve of claim 5, wherein, The upper end of the two sliding blocks (21) is fixedly connected with a limiting rod (23), and the lower end of the two balls (18) is provided with a limiting groove (24) matched with the corresponding limiting rod (23).

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