Bidirectional pilot-operated type regulating valve

Abstract

The utility model relates to the technical field of valves, and discloses a bidirectional pilot-operated type regulating valve which comprises a main valve and a pilot-operated valve connected to the main valve, a valve seat is installed at the lower end of the main valve, a top plate is installed below the valve seat, a bottom plate is installed below the top plate, and a plurality of regulating pipes are evenly and rotatably connected to the upper surface of the bottom plate. An adjusting mechanism is arranged in the adjusting pipe, a positioning sleeve is installed outside the adjusting pipe, and a positioning mechanism is arranged at one end of the positioning sleeve; the adjusting rod in the adjusting pipe is driven to ascend and descend by rotating the adjusting pipe, so that one end of the top plate is driven to ascend and descend, the levelness of the adjusting valve is adjusted, the adjusting valve is adjusted to be in a horizontal state, and the positioning rod in the positioning mechanism is inserted into one positioning hole under the action of the spring. And the adjusting pipe cannot automatically rotate when not needing to rotate, so that unnecessary change of the levelness of the adjusted adjusting valve due to external factors is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a two-way pilot regulating valve. Background Art

[0002] The two-way pilot-operated regulating valve belongs to the field of fluid control, especially the device used to control the flow, pressure, cut-off, connection or switching of the medium in the pipeline or container. It is widely used in various industrial fields such as petroleum, chemical industry, electric power, metallurgy and steel, and plays a vital role in the automatic control system. The regulating valve usually needs to be installed upright on the horizontal pipeline, and the ground where it is installed will not be in a flat state, and there will be a certain slope more or less, which will lead to the unstable installation of the valve.

[0003] A Chinese patent discloses a pilot piston gas pressure reducing valve (authorization announcement number CN219013472U). The patent technology is provided with a level adjustment device at the bottom of the pressure reducing valve. When the regulating valve is installed, even if the ground on which it is installed is not flat, the pressure reducing valve can be kept installed upright. After the pressure reducing valve is leveled by a counterweight hemisphere, the supporting mechanism around it will also move accordingly. After it is stable, it is only necessary to tighten the positioning screw to fix the moving slider, so that the entire pressure reducing valve can be fixed and kept installed upright.

[0004] However, it has certain disadvantages: when the valve is in use, the internal fluid will have a certain impact on the valve, causing the valve to vibrate to a certain extent, and the vibration will be transmitted to the positioning screw. Over time, the positioning screw will loosen due to the vibration, resulting in unnecessary changes in the horizontality of the adjusting plate and the valve on it. Utility Model Content

[0005] The purpose of the utility model is to provide a bidirectional pilot control valve to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A two-way pilot regulating valve comprises a main valve and a pilot valve connected to the main valve, wherein a valve seat is installed at the lower end of the main valve, a top plate is installed below the valve seat, a plurality of support columns are installed on the upper surface of the top plate, and a plurality of slide grooves are provided on the lower surface of the top plate, a bottom plate is installed below the top plate, a plurality of regulating tubes are evenly rotatably connected on the upper surface of the bottom plate, an regulating mechanism is provided inside the regulating tube, a plurality of positioning holes are evenly provided on the upper surface of the bottom plate located on the outside of the regulating tube, a positioning sleeve is installed outside the regulating tube, and a positioning mechanism is provided at one end of the positioning sleeve.

[0008] As a further solution of the utility model: the adjustment mechanism includes an adjustment rod, the upper end of the adjustment rod is externally rotatably connected to an adjustment seat, and a slide plate is installed on the upper surface of the adjustment seat.

[0009] As a further solution of the utility model: the positioning mechanism includes a connecting tube, a slider is slidably connected inside the connecting tube, a positioning rod is installed on the lower surface of the slider, and a spring is installed on the upper surface of the slider, a sliding rod is installed on the upper surface of the slider inside the spring, and a pull rod is installed on the upper end of the sliding rod.

[0010] As a further solution of the utility model: the upper end of the support column is installed on the lower surface of the valve seat, a plurality of the support columns are evenly distributed, and the number of the slide grooves is equal to the number of the regulating pipes.

[0011] As a further solution of the utility model: the adjusting rod is threadedly connected to the inside of the adjusting tube, and the sliding plate is slidably connected to the inside of the sliding groove.

[0012] As a further solution of the utility model: the lower end of the connecting tube is installed on the upper surface of the positioning sleeve, the positioning rod movably passes through the lower surface of the connecting tube and one end of the positioning sleeve, and the lower end of the positioning rod is located inside a positioning hole, and the upper end of the sliding rod movably passes through the upper surface of the connecting tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model drives the regulating rod inside the regulating tube to rise and fall by rotating, thereby driving one end of the top plate to rise and fall, and then adjusting the horizontality of the regulating valve to adjust the regulating valve to a horizontal state.

[0015] 2. The utility model is provided with a positioning mechanism, in which a positioning rod is inserted into a positioning hole under the action of a spring, so that the regulating tube cannot rotate by itself when it is not necessary to rotate, thereby avoiding unnecessary changes in the horizontality of the regulating valve after adjustment due to external factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a bidirectional pilot control valve;

[0017] Figure 2 It is a partial rear view of a bidirectional pilot control valve;

[0018] Figure 3 It is a partial schematic diagram of a bidirectional pilot control valve;

[0019] Figure 4 It is a bottom view of a top plate in a bidirectional pilot control valve;

[0020] Figure 5 for Figure 3 A magnified view of middle;

[0021] Figure 6 The figure is a structural schematic diagram of a positioning mechanism in a bidirectional pilot control valve.

[0022] In the figure: 1. main valve; 2. pilot valve; 3. valve seat; 4. top plate; 5. support column; 6. slide groove; 7. bottom plate; 8. adjusting tube; 9. adjusting mechanism; 10. adjusting rod; 11. adjusting seat; 12. slide plate; 13. positioning hole; 14. positioning sleeve; 15. positioning mechanism; 16. connecting pipe; 17. slider; 18. positioning rod; 19. spring; 20. slide rod; 21. pull rod. DETAILED DESCRIPTION

[0023] See also Figure 1 and Figure 2 In the embodiment of the utility model, a bidirectional pilot control valve comprises a main valve 1 and a pilot valve 2 connected to the main valve 1, and a valve seat 3 is installed at the lower end of the main valve 1;

[0024] The rear and front ends of the main valve 1 are respectively provided with a fluid inlet and a fluid outlet;

[0025] The main valve 1 is the main component for controlling the flow of fluid. It usually has a movable valve core and a fixed valve seat. The relative position between the valve core and the valve seat determines the flow rate or pressure of the fluid. The pilot valve 2 is connected to the main valve 1. Its function is to adjust the opening of the main valve 1 according to the control signal.

[0026] When the control signal changes, the pilot valve 2 will make a corresponding action, which will change the area of ​​the internal channel of the pilot valve 2, thereby changing the pressure difference on both sides of the pilot valve 2. This pressure difference will act on the valve core of the main valve 1, pushing the valve core to move relative to the valve seat; when the pilot valve 2 is opened, the pressure difference will push the valve core of the main valve 1 to move in the opening direction, so that the channel area of ​​the main valve 1 increases, the fluid flow rate increases or the pressure decreases; on the contrary, when the pilot valve 2 is closed, the pressure difference will push the valve core of the main valve 1 to move in the closing direction, so that the channel area of ​​the main valve 1 decreases, the fluid flow rate decreases or the pressure increases. Since the pilot valve 2 can be adjusted in both directions according to the control signal, the main valve 1 can also achieve two-way flow or pressure regulation.

[0027] exist Figure 1 , Figures 3 to 5Middle: A top plate 4 is installed below the valve seat 3, a plurality of support columns 5 are installed on the upper surface of the top plate 4, the upper ends of the support columns 5 are installed on the lower surface of the valve seat 3, and the plurality of support columns 5 are evenly distributed. A plurality of slide grooves 6 are provided on the lower surface of the top plate 4, a bottom plate 7 is installed below the top plate 4, a plurality of adjustment tubes 8 are evenly rotatably connected on the upper surface of the bottom plate 7, the number of the slide grooves 6 is equal to the number of the adjustment tubes 8, an adjustment mechanism 9 is arranged inside the adjustment tube 8, the adjustment mechanism 9 comprises an adjustment rod 10, the adjustment rod 10 is threadedly connected inside the adjustment tube 8, an adjustment seat 11 is rotatably connected to the upper end of the adjustment rod 10, a slide plate 12 is installed on the upper surface of the adjustment seat 11, and the slide plate 12 is slidably connected inside the slide groove 6;

[0028] The number of the regulating tubes 8 is preferably four, and they are evenly distributed front, back, left, and right;

[0029] Rotating the adjusting tube 8 can make the adjusting rod 10 move up and down, and the adjusting seat 11 slides in the slide groove 6 and drives one end of the top plate 4 to move up and down, thereby adjusting the horizontality of the regulating valve, making it easy to adjust the regulating valve to a horizontal state on an uneven ground.

[0030] exist Figure 5 and Figure 6 Middle: The upper surface of the bottom plate 7 is located outside the adjusting tube 8 and is evenly provided with a plurality of positioning holes 13. A positioning sleeve 14 is installed outside the adjusting tube 8. A positioning mechanism 15 is provided at one end of the positioning sleeve 14. The positioning mechanism 15 includes a connecting tube 16. The lower end of the connecting tube 16 is installed on the upper surface of the positioning sleeve 14. A slider 17 is slidably connected inside the connecting tube 16. A positioning rod 18 is installed on the lower surface of the slider 17. The positioning rod 18 movably penetrates the lower surface of the connecting tube 16 and one end of the positioning sleeve 14, and the lower end of the positioning rod 18 is located inside a positioning hole 13. A spring 19 is installed on the upper surface of the slider 17. A slide rod 20 is installed inside the spring 19 on the upper surface of the slider 17. The upper end of the slide rod 20 movably penetrates the upper surface of the connecting tube 16.

[0031] The positioning rod 18 is clamped inside a positioning hole 13 by the elastic force of the spring 19, so that the regulating tube 8 cannot rotate when it is not necessary to rotate, thereby avoiding the horizontality of the regulating valve from changing.

[0032] exist Figure 6 Middle: A pull rod 21 is installed at the upper end of the slide bar 20; the pull rod 21 is convenient for pulling the slide bar 20 upward.

[0033] The working principle of the utility model is: when installing the regulating valve, fix it at the required position through the bottom plate 7, and then adjust the horizontality of the regulating valve. First, pull up a pull rod 21 on an adjusting tube 8 to drive the sliding rod 20 to rise, and the sliding block 17 will rise, thereby pulling the positioning rod 18 out of the inside of a positioning hole 13, and then rotate the adjusting tube 8. Since the adjusting rod 10 is threadedly connected with it, the adjusting rod 10 will rise or fall, and drive one end of the top plate 4 to rise and fall through the adjusting seat 11. After the horizontality adjustment of the top plate 4 is completed, release the pull rod 21, so that the positioning rod 18 is inserted into the inside of a positioning hole 13, thereby completing the horizontality adjustment of the regulating valve.

[0034] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A two-way pilot control valve, comprising a main valve (1) and a pilot valve (2) connected to the main valve (1), wherein a valve seat (3) is installed at the lower end of the main valve (1), a top plate (4) is installed below the valve seat (3), a plurality of support columns (5) are installed on the upper surface of the top plate (4), and a plurality of slide grooves (6) are provided on the lower surface of the top plate (4), a bottom plate (7) is installed below the top plate (4), a plurality of regulating tubes (8) are evenly rotatably connected to the upper surface of the bottom plate (7), and a regulating mechanism (9) is provided inside the regulating tube (8), characterized in that: The upper surface of the bottom plate (7) is located outside the regulating tube (8) and is evenly provided with a plurality of positioning holes (13); a positioning sleeve (14) is installed outside the regulating tube (8); and a positioning mechanism (15) is provided at one end of the positioning sleeve (14).

2. A two-way pilot control valve according to claim 1, characterized in that: The adjustment mechanism (9) comprises an adjustment rod (10), the upper end of the adjustment rod (10) is externally rotatably connected to an adjustment seat (11), and a slide plate (12) is installed on the upper surface of the adjustment seat (11).

3. A two-way pilot control valve according to claim 1, characterized in that: The positioning mechanism (15) comprises a connecting tube (16), the interior of which is slidably connected to a slider (17), a positioning rod (18) is installed on the lower surface of the slider (17), and a spring (19) is installed on the upper surface of the slider (17), a sliding rod (20) is installed on the upper surface of the slider (17) and located inside the spring (19), and a pull rod (21) is installed on the upper end of the sliding rod (20).

4. A two-way pilot control valve according to claim 1, characterized in that: The upper end of the support column (5) is mounted on the lower surface of the valve seat (3), the plurality of support columns (5) are evenly distributed, and the number of the slide grooves (6) is equal to the number of the regulating tubes (8).

5. A two-way pilot control valve according to claim 2, characterized in that: The adjusting rod (10) is threadedly connected to the inside of the adjusting tube (8), and the sliding plate (12) is slidably connected to the inside of the sliding groove (6).

6. A two-way pilot control valve according to claim 3, characterized in that: The lower end of the connecting tube (16) is mounted on the upper surface of the positioning sleeve (14); the positioning rod (18) movably penetrates the lower surface of the connecting tube (16) and one end of the positioning sleeve (14); the lower end of the positioning rod (18) is located inside a positioning hole (13); and the upper end of the sliding rod (20) movably penetrates the upper surface of the connecting tube (16).

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