Control valve group for hydraulic hoist

Abstract

The utility model discloses a control valve group for a hydraulic hoist, which comprises a main pipeline, a valve body is arranged on the main pipeline, a flow stopping seat is arranged in the valve body, a flow hole is arranged on the flow stopping seat, a sealing plate is connected onto the valve body through a first screw, a circular groove is arranged on the sealing plate, and a sliding rod is arranged in the circular groove in a sealing and sliding manner. The end, extending into the valve body, of the sliding rod is fixedly connected with a check block matched with the flowing hole, the top end of the sliding rod is fixedly connected with a circular plate, the top end of the circular plate is fixedly connected with two fixing rods, an adjusting plate is arranged outside the two fixing rods in a sliding mode, and two compression springs are arranged between the adjusting plate and the circular plate. And the two compression springs are arranged outside the two fixing rods in a sleeving mode correspondingly, the outer portion of the valve body is fixedly connected with a protection sleeve, the top end of the protection sleeve is provided with a sealing cover through a second screw, the elastic force of the springs can be conveniently adjusted, the pressure of pressure oil flowing in the valve body can be conveniently adjusted, and the use practicability of the valve is improved.

Description

Technical Field

[0001] This utility model relates to the field of control valve assembly technology, and more specifically, to a control valve assembly for a hydraulic gate opener. Background Technology

[0002] Valve assemblies are mainly divided into two-valve assemblies, three-valve assemblies, and five-valve assemblies. A two-valve assembly consists of two individual valves, a three-valve assembly consists of three individual valves, and a five-valve assembly consists of five individual valves. In hydraulic systems, hydraulic control valve assemblies with different functions are typically used to control actuators and achieve various actions of the actuators. For example, when it is necessary to control the speed of the actuator, hydraulic components such as pressure reducing valves, controllable throttle valves, and pressure compensators can be connected by oil pipes to form a hydraulic control valve assembly, thereby achieving speed control of the actuator.

[0003] A search revealed that Chinese utility model patent application number CN202123017885.0 discloses a control valve assembly for a hydraulic gate opener, including a main pipeline. The main pipeline is equipped with an adjustment device and a maintenance device. The adjustment device includes a valve body, a threaded sleeve, a moving rod, a stop block, and a flow stop seat. The valve body is installed on the main pipeline, and the threaded sleeve is threadedly connected to the valve body. The moving rod is installed inside the threaded sleeve, and the moving rod and the threaded sleeve are slidably connected. The stop block is installed on the moving rod, and the flow stop seat is installed inside the valve body. The flow stop seat has a flow hole, and the stop block fits into the flow hole.

[0004] When in use, when the pressure oil in the main pipeline flows into the valve body, the pressure oil will push against the stop block through the flow hole. Since the stop block is connected to the moving rod, and the two ends of the spring are respectively connected to the fixed plate and the moving plate, when the pressure of the pressure oil exceeds the limit value, the pressure oil will drive the moving rod to move upward, thereby opening the flow hole and completing the flow process.

[0005] However, the degree of spring compression is fixed, which is inconvenient. It is not convenient to adjust the spring force or the pressure of the oil flowing from the valve body, which reduces its practicality. In addition, since the spring is exposed to the outside, foreign objects can get stuck inside the spring during use, affecting the normal extension and contraction of the spring and the normal operation of the valve body. Utility Model Content

[0006] (1) Technical problems solved

[0007] To address the problems existing in the prior art, this utility model provides a control valve assembly for a hydraulic gate opener, thereby solving the technical problems mentioned in the background art, such as the inconvenience in adjusting the spring force and the inconvenience in adjusting the pressure of the oil flowing from the valve body, which reduces its practicality.

[0008] (2) Technical solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a control valve assembly for a hydraulic gate opener, comprising a main pipeline, a valve body installed on the main pipeline, a flow stop seat installed inside the valve body, a flow stop seat having a flow hole, a sealing plate connected to the valve body by a first screw, a circular groove on the sealing plate, a sliding rod slidably disposed inside the circular groove, a stop block cooperating with the flow hole being fixedly connected to one end of the sliding rod extending into the valve body, a circular plate fixedly connected to the top of the sliding rod, two fixed rods fixedly connected to the top of the circular plate, the two fixed rods slidingly cooperating with the circular plate, an adjusting plate slidably disposed outside the two fixed rods, two compression springs disposed between the adjusting plate and the circular plate, the two compression springs respectively sleeved outside the two fixed rods, a protective sleeve fixedly connected to the outside of the valve body, a sealing cap installed at the top of the protective sleeve by a second screw, a screw threadedly connected to the sealing cap, the bottom end of the screw being rotatably connected to the top of the adjusting plate, facilitating adjustment of the spring force, facilitating adjustment of the pressure of the pressurized oil flowing from inside the valve body, and improving its practicality.

[0010] The present invention is further configured such that a square post is fixedly connected to the top end of the screw, a square tube is inserted into the outside of the square post, and a rotating sleeve is fixedly connected to the top end of the square tube, so as to facilitate the rotation of the screw.

[0011] The present invention is further configured such that the inside of the rotating sleeve is provided with a first annular groove, the inside of the first annular groove is provided with a first sealing ring, and the inner sidewall of the first sealing ring contacts the outer sidewall of the protective sleeve to ensure the sealing of the connection between the rotating sleeve and the protective sleeve.

[0012] The present invention is further provided that multiple anti-slip strips are uniformly fixedly connected to the outside of the rotating sleeve to facilitate the rotation of the rotating sleeve.

[0013] The present invention is further provided in that the inside of the circular groove is provided with a second annular groove, and the inside of the second annular groove is provided with a second sealing ring to ensure the sealing between the slide rod and the sealing plate.

[0014] The present invention is further provided that a first sealing gasket is provided between the sealing plate and the valve body to ensure the sealing performance of the connection between the sealing plate and the valve body.

[0015] The present invention is further provided that a second sealing gasket is provided between the sealing cover and the protective sleeve to ensure the sealing performance of the connection between the sealing cover and the protective sleeve.

[0016] The present invention is further configured such that valves and pressure gauges are installed on both sides of the valve body outside the main pipeline, so that the pressure gauges can be used to detect the pressure inside the main pipeline, and the valves can be used to control the opening and closing of the main pipeline.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a control valve assembly for a hydraulic gate hoist, which has the following advantages:

[0019] 1. By rotating the screw, the screw moves relative to the sealing cover, and the screw drives the adjusting plate to move. Adjusting the distance between the adjusting plate and the circular plate, the length of the compression spring changes with the change in the distance between the adjusting plate and the circular plate, thereby adjusting the force of the compression spring on the circular plate, slide rod and stop block. This makes it easy to adjust the elastic force of the compression spring and the pressure of the pressure oil flowing from the inside of the valve body, thus improving its practicality.

[0020] 2. A protective sleeve is connected to the outside of the valve body, and a sealing cap is installed at the top of the protective sleeve to protect the compression spring inside, preventing foreign objects from contacting the compression spring, preventing foreign objects from getting stuck inside the compression spring, and preventing the compression spring from affecting its normal extension and contraction, thus ensuring the normal operation of the valve body.

[0021] 3. The square tube is inserted tightly onto the outside of the square column, making it easy to install the rotating sleeve on the square column and to rotate the screw. At the same time, the rotating sleeve has a first annular groove inside, and a first sealing ring is set inside the first annular groove to ensure the sealing between the rotating sleeve and the protective sleeve, preventing rainwater from entering the interior of the protective sleeve and the rotating sleeve, preventing water from contacting the screw and compression spring, preventing corrosion and damage to the compression spring and screw, and ensuring the service life of the compression spring and screw. Attached Figure Description

[0022] Figure 1 This is a front view of the control valve assembly for a hydraulic gate opener according to the present invention.

[0023] Figure 2 This is a structural diagram showing the assembly of the valve body, slide rod, compression spring, fixing rod, adjusting plate, sealing cover, and screw in this utility model.

[0024] Figure 3 This is a structural diagram showing the assembly of the valve body, flow stop seat, slide rod, sealing cover, and stop block in this utility model.

[0025] Figure 4 This is a schematic diagram of the structure of the sealing plate and the second sealing ring in this utility model;

[0026] Figure 5 This is a structural diagram showing the connection between the transfer sleeve and the square tube in this utility model.

[0027] In the diagram: 1. Main pipe; 2. Valve body; 3. Flow stop seat; 4. Flow hole; 5. First screw; 6. Sealing plate; 7. Circular groove; 8. Slide rod; 9. Stop block; 10. Circular plate; 11. Fixed rod; 12. Adjusting plate; 13. Compression spring; 14. Protective sleeve; 15. Second screw; 16. Sealing cap; 17. Screw; 18. Square column; 19. Square tube; 20. Rotating sleeve; 21. First annular groove; 22. First sealing ring; 23. Anti-slip strip; 24. Second annular groove; 25. Second sealing ring; 26. First sealing gasket; 27. Second sealing gasket; 28. Valve; 29. ​​Pressure gauge. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figures 1-5A control valve assembly for a hydraulic gate hoist includes a main pipeline 1, a valve body 2 mounted on the main pipeline 1, a flow stop seat 3 installed inside the valve body 2, and a flow hole 4 provided on the flow stop seat 3. Valves 28 and pressure gauges 29 are installed on both sides of the valve body 2 outside the main pipeline 1. The pressure gauges 29 facilitate the detection of the internal pressure of the main pipeline 1, and the valves 28 facilitate the control of the opening and closing of the main pipeline 1. A sealing plate 6 is connected to the valve body 2 by a first screw 5. A first sealing gasket 26 is provided between the sealing plate 6 and the valve body 2 to ensure the sealing performance between the sealing plate 6 and the valve body 2. A circular groove 7 is provided on the sealing plate 6. A sliding rod 8 is slidably disposed inside the circular groove 7. A second annular groove 24 is provided inside the circular groove 7. A second sealing ring 25 is provided inside the second annular groove 24 to ensure the sealing performance between the sliding rod 8 and the sealing plate 6. One end of the slide rod 8 extending into the valve body 2 is fixedly connected to a stop block 9 that mates with the flow hole 4. A circular plate 10 is fixedly connected to the top of the slide rod 8. Two fixed rods 11 are fixedly connected to the top of the circular plate 10. The two fixed rods 11 slide in cooperation with the circular plate 10. An adjusting plate 12 is slidably arranged outside the two fixed rods 11. Two compression springs 13 are arranged between the adjusting plate 12 and the circular plate 10. The two compression springs 13 are respectively sleeved on the outside of the two fixed rods 11. A protective sleeve 14 is fixedly connected to the outside of the valve body 2. A sealing cover 16 is installed on the top of the protective sleeve 14 through a second screw 15. A second sealing gasket 27 is arranged between the sealing cover 16 and the protective sleeve 14 to ensure the sealing of the connection between the sealing cover 16 and the protective sleeve 14. A screw 17 is threadedly connected to the sealing cover 16. The bottom end of the screw 17 is rotatably connected to the top of the adjusting plate 12.

[0032] Specifically, the compression spring 13 pushes the circular plate 10, slide rod 8, and stop block 9 to move, causing the stop block 9 to seal the flow hole 4. When the hydraulic oil inside the main pipeline 1 reaches a certain pressure, the thrust of the hydraulic oil on the stop block 9 is greater than the elastic force of the two compression springs 13, which pushes the stop block 9 to move. The hydraulic oil flows through the flow hole 4 from the inside of the valve body 2, thus allowing the oil to flow from the inside of the main pipeline 1. By rotating the screw 17, the screw 17 moves relative to the sealing cover 16, and the screw 17 drives the adjusting plate 12 to move, adjusting the distance between the adjusting plate 12 and the circular plate 10. The length of the compression spring 13 changes with the distance between the adjusting plate 12 and the circular plate. The pressure exerted by the compression spring 13 on the circular plate 10, slide rod 8, and stop block 9 varies with the distance between the two parts, thereby adjusting the force of the compression spring 13 on the circular plate 10, slide rod 8, and stop block 9. This facilitates the adjustment of the elastic force of the compression spring 13 and the pressure of the oil flowing from the inside of the valve body 2, improving its practicality. By connecting a protective sleeve 14 to the outside of the valve body 2, and installing a sealing cap 16 at the top of the protective sleeve 14, the compression spring 13 is protected inside, preventing foreign objects from contacting the compression spring 13, preventing foreign objects from getting stuck inside the compression spring 13, and preventing interference with the normal extension and contraction of the compression spring 13, thus ensuring the normal operation of the valve body 2.

[0033] Please see Figure 2 and Figure 5 A square post 18 is fixedly connected to the top of the screw 17. A square tube 19 is inserted into the outside of the square post 18. A rotating sleeve 20 is fixedly connected to the top of the square tube 19. A first annular groove 21 is provided inside the rotating sleeve 20. A first sealing ring 22 is provided inside the first annular groove 21. The inner side wall of the first sealing ring 22 contacts the outer side wall of the protective sleeve 14. Multiple anti-slip strips 23 are evenly fixedly connected to the outside of the rotating sleeve 20 to facilitate the rotation of the rotating sleeve 20.

[0034] Specifically, the square tube 19 is inserted tightly onto the outside of the square column 18, facilitating the installation of the rotating sleeve 20 on the square column 18 and enabling the screw 17 to rotate. Simultaneously, the rotating sleeve 20 has a first annular groove 21 inside, with a first sealing ring 22 inside, ensuring a tight seal between the rotating sleeve 20 and the protective sleeve 14. This prevents rainwater from entering the protective sleeve 14 and the interior of the rotating sleeve 20, avoids water contact with the screw 17 and the compression spring 13, prevents corrosion and damage to the compression spring 13 and the screw 17, and ensures the service life of the compression spring 13 and the screw 17.

[0035] In summary, when using the overall equipment:

[0036] The compression spring 13 pushes the circular plate 10, slide rod 8, and stop block 9 to move, causing the stop block 9 to seal the flow hole 4. When the hydraulic oil inside the main pipeline 1 reaches a certain pressure, the thrust of the hydraulic oil on the stop block 9 is greater than the elastic force of the two compression springs 13, which will push the stop block 9 to move. The hydraulic oil flows through the flow hole 4 from the inside of the valve body 2, thus allowing the oil to flow from the inside of the main pipeline 1. By rotating the screw 17, the screw 17 moves relative to the sealing cover 16, and the screw 17 drives the adjusting plate 12 to move, adjusting the distance between the adjusting plate 12 and the circular plate 10. The length of the compression spring 13 changes with the change in the distance between the adjusting plate 12 and the circular plate 10, thereby adjusting the squeezing force of the compression spring 13 on the circular plate 10, slide rod 8, and stop block 9. This facilitates the adjustment of the elastic force of the compression spring 13 and the adjustment of the pressure of the hydraulic oil flowing from the inside of the valve body 2, improving its practicality.

[0037] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A control valve assembly for a hydraulic gate hoist, comprising a main pipeline (1), a valve body (2) mounted on the main pipeline (1), a flow stop seat (3) installed inside the valve body (2), and a flow stop seat (3) having a flow hole (4), characterized in that: A sealing plate (6) is connected to the valve body (2) by a first screw (5). A circular groove (7) is provided on the sealing plate (6). A slide rod (8) is slidably disposed inside the circular groove (7). A stop block (9) that cooperates with the flow hole (4) is fixedly connected to one end of the slide rod (8) that extends into the valve body (2). A circular plate (10) is fixedly connected to the top of the slide rod (8). Two fixing rods (11) are fixedly connected to the top of the circular plate (10). The two fixing rods (11) are slidably engaged with the circular plate (10). An adjusting plate (12) is slidably provided on the outside of the rod (11). Two compression springs (13) are provided between the adjusting plate (12) and the circular plate (10). The two compression springs (13) are respectively sleeved on the outside of the two fixed rods (11). A protective sleeve (14) is fixedly connected to the outside of the valve body (2). A sealing cover (16) is installed on the top of the protective sleeve (14) by a second screw (15). A screw (17) is threadedly connected to the sealing cover (16). The screw (17) is rotatably connected to the adjusting plate (12).

2. The control valve assembly for a hydraulic gate hoist according to claim 1, characterized in that: The top end of the screw (17) is fixedly connected to a square column (18), and a square tube (19) is inserted into the outside of the square column (18). The top end of the square tube (19) is fixedly connected to a rotating sleeve (20).

3. A control valve assembly for a hydraulic gate hoist according to claim 2, characterized in that: The rotating sleeve (20) has a first annular groove (21) inside, and a first sealing ring (22) is provided inside the first annular groove (21). The inner sidewall of the first sealing ring (22) is in contact with the outer sidewall of the protective sleeve (14).

4. A control valve assembly for a hydraulic gate hoist according to claim 2, characterized in that: Multiple anti-slip strips (23) are uniformly fixedly connected to the outside of the rotating sleeve (20).

5. A control valve assembly for a hydraulic gate hoist according to claim 1, characterized in that: The circular groove (7) is provided with a second annular groove (24), and the second annular groove (24) is provided with a second sealing ring (25).

6. A control valve assembly for a hydraulic gate hoist according to claim 1, characterized in that: A first sealing gasket (26) is provided between the sealing plate (6) and the valve body (2).

7. A control valve assembly for a hydraulic gate hoist according to claim 1, characterized in that: A second sealing gasket (27) is provided between the sealing cap (16) and the protective sleeve (14).

8. A control valve assembly for a hydraulic gate hoist according to claim 1, characterized in that: Valves (28) and pressure gauges (29) are installed on both sides of the valve body (2) outside the main pipeline (1).

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