A regulating valve

Abstract

The application discloses a regulating valve and relates to the technical field of valves; in order to solve the problem that the wear surface cannot be automatically compensated; specifically comprising a valve body, a slow flow structure is arranged in the valve body, the slow flow structure comprises a partition plate fixedly connected to a corresponding end face of the valve body, a guide groove arranged on a corresponding side face of the partition plate, a valve core assembly in sliding fit with the guide groove through a wear compensation assembly, and a water inlet and a water outlet respectively arranged at two ends of the valve body and distributed with different horizontal height differences; a working cavity is arranged in the valve body, an executing element is arranged in the working cavity, and the executing element comprises an electric telescopic column fixedly connected to an inner wall of one side of the valve body and a push plate fixedly connected to an extended end of the electric telescopic column. According to the application, the real-time wear degree of one end of the sliding rod is used to push the sliding rod to move outward, and thus the automatic compensation of the wear degree of the moving part can be realized, the structure is stable, and the service life of the equipment is effectively prolonged.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more particularly to a regulating valve. Background Technology

[0002] Control valves, also known as regulating valves, generally consist of an actuator and a valve body. They are used in industrial automation process control to regulate process parameters such as flow rate, pressure, temperature, and liquid level. Based on control signals from the automation system, they automatically adjust the valve opening to regulate these parameters. Control valves can be classified by stroke characteristics (linear and rotary); by the power source of their actuators (pneumatic, electric, and hydraulic); and by function and characteristics (linear, equal percentage, and parabolic). They are diverse and widely applicable to regulating media such as air, water, steam, various corrosive media, slurry, and oil.

[0003] A search revealed Chinese patent application CN202022088458.0, which discloses a novel, easily adjustable valve. The valve includes a valve body with an outlet at its bottom and an inlet on its side. A mounting bracket is fixedly installed on the top of the valve body, and the bracket has a speed adjustment port. The valve body has an internal cavity with a cylinder movably inserted inside. The cylinder has a first inlet, a second inlet, and a third inlet arranged sequentially from top to bottom on its side. The top of the cylinder is fixedly installed to the bottom of a vertical rod. The top of the vertical rod passes through the top of the valve body and the bottom of the mounting bracket. A fixing block is located near the top of the vertical rod, and a spring connects the fixing block and the mounting bracket, with the spring sleeved on the vertical rod. The aforementioned easily adjustable valve has the following drawback: because it cannot automatically compensate for wear, the outer wall of the cylinder will wear over time, leading to a compromised seal against the internal cavity and affecting the valve's sealing effect. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a regulating valve.

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

[0006] A regulating valve includes a valve body, the valve body having an internal flow-slowing structure, the flow-slowing structure including a partition plate fixedly connected to a corresponding end face of the valve body, a guide groove disposed on a corresponding side of the partition plate, a valve core assembly that forms a sliding fit with the guide groove through a wear compensation component, and an inlet and an outlet respectively disposed at both ends of the valve body and distributed with different horizontal height differences.

[0007] The valve body has a working chamber inside, and an actuator is installed inside the working chamber. The actuator includes an electric telescopic column fixedly connected to the inner wall of one side of the valve body, a push plate fixedly connected to the extension end of the electric telescopic column, and an adaptive adjustment part is connected between the push plate and the stop block.

[0008] Preferably, the valve core assembly includes a connecting plate mounted on the top outer wall of the partition plate and a stop block fixedly connected to the bottom edge of the connecting plate, wherein the outer surface of the stop block is in contact with the inner surface of the valve body, and the outer diameter of the stop block is larger than the inner diameter of the inlet.

[0009] Wear-resistant pads are provided on both sides of the stop block;

[0010] The working chamber is located on one side of the stop block and below the partition plate.

[0011] Preferably, the wear compensation assembly includes two sliding rods that are slidably connected to the inner walls of both sides of the stop block, two or more limiting posts that are sequentially fixed to the side of the sliding rod facing the actuator, a limiting hole that is adapted to the limiting post on the side of the stop block facing the actuator, and a pressure group, wherein the sliding rod and the guide groove form a sliding fit.

[0012] The limiting post consists of a rubber post and a hemispherical top cover fixedly connected to one end of the rubber post.

[0013] Preferably, the pressure application assembly includes a liquid bladder fixedly connected to one side of the push plate and the corresponding side of the stop, and a channel disposed inside the stop and connected to the liquid outlet of the liquid bladder through a conduit.

[0014] Preferably, the adaptive adjustment part includes a guide post that slides with the inner wall of the push plate, a limiting block fixedly connected to one side of the guide post and the stop block, and a spring B sleeved on the outer wall of the guide post, with the two ends of the spring B fixedly connected to one end face of the guide post and the push plate, respectively.

[0015] Preferably, a fixed seat is fixedly connected to the outer circumferential wall of the valve body facing upward, and an execution assembly is fixedly connected to the bottom inner wall of the fixed seat. The execution assembly includes a positioner, a communication module, and a control module.

[0016] Preferably, a pressure-reducing tube communicating with the interior of the valve body is fixedly connected to the outer circumference of the valve body;

[0017] A middle plate is fixedly connected to one side of the outer wall of the fixed base, and a pressure sensor is fixedly connected to the top outer wall of the middle plate.

[0018] Preferably, the inner wall of the fixed base is slidably connected to a movable plate, the top of the movable plate is fixedly connected to a sliding column that forms a sliding fit with the outer wall of the pressure relief tube, the top of the sliding column is provided with a hemispherical cover fixedly connected to the inner wall of the pressure relief tube, and the outer wall of the sliding column is fitted with a spring A, the two ends of the spring A are respectively fixedly connected to the corresponding side of the movable plate and the fixed base.

[0019] Preferably, a cover is fixedly connected to the outer circumference of the valve body located directly above the fixed seat, and a warning device is fixedly connected to the top outer wall of the cover.

[0020] Preferably, the outer surface of the valve body is provided with a protective coating.

[0021] The beneficial effects of this invention are as follows:

[0022] This invention, through the design of a stop block and a wear compensation component, allows liquid to enter the valve body cavity from the inlet. The liquid flow impacts the stop block, causing it to move backward within the guide groove under hydraulic pressure. This squeezes the liquid bladder, allowing the liquid inside to be transported to the channel via a conduit. The hydraulic pressure then pushes the sliding rods on both sides outward, ensuring that one side of the sliding rod firmly adheres to the inner wall of the guide groove. This guarantees the seal between one end of the sliding rod and the guide groove. The outward movement of the sliding rod is driven based on the real-time wear of one end, thus achieving automatic compensation for the wear of the moving parts. The structure is stable and effectively extends the service life of the equipment.

[0023] During the forward movement of the hydraulically driven sliding rod in the channel of this invention, a certain limiting post on it is aligned with the limiting hole, thereby limiting the position of the sliding rod's forward movement. This prevents the sliding rod from moving backward after the liquid in the channel has reset, which would cause a gap between the sliding rod and the guide groove, effectively improving the stability of the valve body during adjustment.

[0024] This invention utilizes the valve body cavity arranged in a horizontal 'ㄣ' shape to effectively alleviate inlet water pressure, resulting in a balanced water flow with less impact and improving the stability of the valve body during use. During liquid inlet, when the hydraulic pressure is large, the stop block moves backward, guided by the guide post towards the push plate. When the hydraulic pressure is small, the spring B is released elastically, causing the stop block to move forward towards the inlet under the guidance of the guide post. This enables the automatic adjustment of the stop block opening degree according to different inlet liquid pressures.

[0025] In this invention, if the inlet flow rate is large and the outlet flow rate is small, a large amount of liquid will quickly fill the valve body space above the partition plate, and the continuously entering liquid will enter the pressure relief pipe, thereby regulating the internal pressure of the valve body and reducing safety hazards. When the liquid entering the pressure relief pipe flows over the surface of the hemispherical cover, the liquid will squeeze the sliding column downward, thereby pressurizing the movable plate on the pressure sensor. The pressure sensor transmits the pressure change signal to the control module, so that it can control the communication module to send an abnormal alarm to the system control background, and at the same time control the alarm to be activated to remind on-site personnel. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of a regulating valve proposed in this invention;

[0027] Figure 2 This is a front partial cross-sectional view of a regulating valve proposed in this invention.

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of a regulating valve body according to the present invention;

[0029] Figure 4 This is a front view schematic diagram of the partition structure of a regulating valve proposed in this invention;

[0030] Figure 5 This is a partial cross-sectional schematic diagram of the stop block structure of a regulating valve proposed in this invention.

[0031] In the diagram: 1 Valve body, 101 Inlet, 102 Outlet, 103 Working chamber, 2 Flange, 201 Sealing gasket, 3 Cover, 4 Warning device, 5 Pressure relief pipe, 6 Fixed seat, 7 Hemispherical cover, 701 Sliding column, 702 Spring A, 703 Movable plate, 8 Actuating assembly, 9 Pressure sensor, 10 Protective coating, 11 Partition plate, 12 Connecting plate, 1201 Guide groove, 1202 Sealing strip, 1203 Sliding rod, 1204 Limiting post, 13 Electric telescopic post, 1301 Push plate, 14 Spring B, 1401 Guide post, 15 Liquid bladder, 1501 Channel, 16 Stop block, 1601 Wear-resistant gasket, 17 Limiting block. Detailed Implementation

[0032] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0033] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0034] Example 1:

[0035] A regulating valve, such as Figure 1 and Figure 3-5 As shown, the valve body 1 includes a valve body 1, with flanges 2 welded to both ends for connecting to external pipelines. A sealing gasket 201 is bonded to one end face of the flange 2. The outer surface of the valve body 1 is coated with a protective coating 10 to prevent corrosion caused by external rainwater, dust, etc.

[0036] Furthermore, a fixing seat 6 is fixed to the outer circumference of the valve body 1 facing upward by bolts, and an execution assembly 8 that communicates with the system control backend is fixed to the bottom inner wall of the fixing seat 6 by bolts. The execution assembly 8 includes a positioner that facilitates the operator to quickly lock the position of the valve body 1, a communication module for remote signal transmission, and a control module; the control module transmits information to the system control backend through the communication module.

[0037] Furthermore, the valve body 1 is internally equipped with a flow-slowing structure to alleviate inlet water pressure. The flow-slowing structure includes a partition plate 11 welded to one end face of the valve body 1, a guide groove 1201 opened on one side face of the partition plate 11, a valve core assembly that slides with the guide groove 1201 through a wear compensation component, and an inlet 101 and an outlet 102 respectively located at both ends of the valve body 1 with different horizontal height differences. After adjusting the position of the valve core assembly to no longer block the partition plate 11, the liquid will flow into the inner cavity of the valve body 1 from the inlet 101, then pass through the partition plate 11 and surge up to the upper space of the valve body 1, and finally flow out from the outlet 102. By utilizing the inner cavity of the valve body 1, which is arranged in a horizontal 'ㄣ' shape, the inlet water pressure can be effectively alleviated, resulting in a water flow with a small impact force after balance, thus improving the stability of the valve body 1 during use.

[0038] Preferably, the valve core assembly is L-shaped and includes a connecting plate 12 mounted on the top outer wall of the partition plate 11 and a stop block 16 welded to the bottom edge of the connecting plate 12. The outer surface of the stop block 16 is in contact with the inner surface of the valve body 1 to ensure the tightness of the two. Preferably, the outer diameter of the stop block 16 is larger than the inner diameter of the inlet 101. Even if the outer wall of the stop block 16 is worn, it will not affect the blocking of the inlet 101. By controlling the back-and-forth displacement of the stop block 16 in the guide groove 1201, the function of blocking and opening the inlet 101 can be realized.

[0039] Preferably, a sealing strip 1202 for improving the tightness of valve opening and closing is welded to one side of the outer wall of the connecting plate 12;

[0040] Preferably, wear-resistant pads 1601 are provided on both sides of the stop 16 to reduce surface wear and improve the service life of the stop 16.

[0041] Furthermore, a working chamber 103 is provided inside the valve body 1 located on one side of the stop block 16. An actuator connected to the control module is provided inside the working chamber 103. The actuator includes an electric telescopic column 13 fixedly connected to the inner wall of one side of the valve body 1 and a push plate 1301 fixedly connected to the extension end of the electric telescopic column 13. An adaptive adjustment part that can automatically adjust the inlet size according to the liquid inlet pressure is connected between the push plate 1301 and the stop block 16.

[0042] Preferably, the electric telescopic column 13 can also be replaced by a hydraulic structure, etc.

[0043] Preferably, the working chamber 103 is located below the partition plate 11; the electric telescopic column 13 is controlled to move back and forth within the valve body 1 via the push plate 1301 to adjust the size of the water inlet.

[0044] As a supplement, such as Figure 3-5 As shown, the wear compensation assembly includes two sliding rods 1203 slidably connected to the inner walls of both sides of the stop 16, multiple limiting posts 1204 sequentially welded to the side of the sliding rods 1203 facing the actuator, limiting holes adapted to the limiting posts 1204 on the side of the stop 16 facing the actuator, and a pressure application group for pushing the sliding rods 1203 forward. The sliding rods 1203 and the guide groove 1201 form a sliding fit. During the forward movement of the sliding rods 1203 driven by the hydraulic pressure in the channel 1501, a certain limiting post 1204 on them is aligned with the limiting hole, thereby limiting the forward movement position of the sliding rods 1203. This prevents the sliding rods 1203 from moving backward after the liquid in the channel 1501 is reset, which would cause a gap between the sliding rods 1203 and the guide groove 1201, effectively improving the stability of the valve body 1 during adjustment.

[0045] Furthermore, the pressure application assembly includes a liquid bladder 15 welded to one side of the push plate 1301 and the corresponding side of the stop block 16, and a channel 1501 opened inside the stop block 16 and connected to the liquid outlet of the liquid bladder 15 through a conduit; preferably, the channel 1501 is connected to the inner cavity of the stop block 16 which forms a sliding fit with the sliding rod 1203, so that liquid can enter the inner cavity of the stop block 16 from the channel 1501 to push the sliding rod 1203.

[0046] Preferably, the limiting post 1204 is composed of a rubber post and a hemispherical top cover welded to one end of the rubber post. After the liquid enters the inner cavity of the valve body 1 from the inlet 101, the liquid flow impacts the baffle 16, causing it to move backward in the guide groove 1201 under the influence of hydraulic pressure, thereby squeezing the liquid bag 15, so that the liquid inside is transported to the channel 1501 through the conduit, and the hydraulic pressure pushes the sliding rods 1203 on both sides to move outward, so that one side of the sliding rod 1203 is firmly attached to the inner wall of one side of the guide groove 1201, thereby ensuring the sealing between one end of the sliding rod 1203 and the guide groove 1201. The sliding rod 1203 is pushed outward according to the real-time wear degree of one end, thereby realizing automatic compensation for the wear degree of the sliding rod 1203, and the structure is stable.

[0047] As a supplement, such as Figure 3 and Figure 5 As shown, the adaptive adjustment unit includes a guide post 1401 that slides with the inner wall of the push plate 1301, a limiting block 17 welded to the corresponding side of the guide post 1401 and the stop block 16, and a spring B14 sleeved on the outer wall of the guide post 1401, with both ends of the spring B14 welded to the corresponding end faces of the guide post 1401 and the push plate 1301, respectively. The limiting block 17 is provided to limit the gap between the stop block 16 and the push plate 1303 to prevent the liquid bag 15 from being damaged due to excessive compression. During liquid inlet, when the hydraulic pressure is large, the stop block 16 is pushed backward, and the stop block 16 is guided by the guide post 1401 to move backward toward the push plate 1301; when the hydraulic pressure is small, the spring B14 is released elastically, causing the stop block 16 to move forward toward the inlet 101 under the guidance of the guide post 1401, thereby realizing the function of automatically adjusting the opening degree of the stop block 16 according to different liquid inlet pressures of the inlet 101.

[0048] In this embodiment, when in use, the electric telescopic column 13 is activated, causing it to move the stop 16 backward within the valve body 1 via the push plate 1301, no longer obstructing the partition plate 11. At this time, the liquid will flow into the inner cavity of the valve body 1 from the inlet 101, then pass through the partition plate 11 and surge upward to the upper space of the valve body 1, and finally slowly flow out from the outlet 102. During the liquid inlet, when the hydraulic pressure is large and pushes the stop 16 backward, the stop 16 is guided by the guide column 1401 to move backward toward the push plate 1301; when the hydraulic pressure is small, the spring B14 is released elastically, causing the stop 16 to move forward toward the inlet 101 under the guidance of the guide column 1401. Furthermore, after the liquid enters the inner cavity of the valve body 1 from the inlet 101, the liquid flow impacts the baffle 16, causing it to move backward in the guide groove 1201 under the influence of hydraulic pressure. This squeezes the liquid bag 15, allowing the liquid inside to be transported to the channel 1501 through the conduit. The hydraulic pressure then pushes the sliding rods 1203 on both sides outward, ensuring that one side of the sliding rod 1203 is firmly attached to the inner wall of the guide groove 1201. This guarantees the sealing between one end of the sliding rod 1203 and the guide groove 1201. When the hydraulic pressure in the channel 1501 pushes the sliding rod 1203 forward, a limiting post 1204 on it is aligned with the limiting hole, thereby limiting the forward movement position of the sliding rod 1203. This prevents the sliding rod 1203 from moving backward after the liquid in the channel 1501 has reset, which would cause a gap between the sliding rod 1203 and the guide groove 1201.

[0049] Example 2:

[0050] A regulating valve, such as Figure 1-2 As shown, in order to automatically relieve the pressure inside the valve body 1, this embodiment makes the following improvements based on embodiment 1: a pressure-relieving tube 5 that communicates with the inside of the valve body 1 is fixedly connected to the outer circumference of the valve body 1; a middle plate is fixed to one side of the outer wall of the fixed seat 6 by bolts, and a pressure sensor 9 that communicates with the control module is fixed to the top outer wall of the middle plate by bolts; a movable plate 703 is slidably connected to the inner wall of the fixed seat 6, and a sliding column 701 that forms a sliding fit with the outer wall of the pressure-relieving tube 5 is welded to the top of the movable plate 703; a hemispherical cover 7 made of rubber is provided at the top of the sliding column 701 and welded to the inner wall of the pressure-relieving tube 5; and a spring A702 is sleeved on the outer wall of the sliding column 701, with the two ends of the spring A702 respectively welded to the corresponding side of the movable plate 703 and the fixed seat 6;

[0051] Furthermore, a cover 3 for shielding the fixed seat 6 and the pressure relief tube 5 is fixed to the outer circumference of the valve body 1 located directly above the fixed seat 6 by bolts, thereby increasing the protection and safety of both.

[0052] Preferably, the top outer wall of the cover 3 is fixed with an alarm 4 electrically connected to the control module by bolts. If the inlet flow rate is large and the outlet flow rate is small, a large amount of liquid will quickly fill the space of the valve body 1 above the partition plate 11, and the continuously entering liquid will enter the pressure relief pipe 5, thereby regulating the internal pressure of the valve body 1 and reducing safety hazards. When the liquid entering the pressure relief pipe 5 is on the surface of the flow hemispherical cover 7, the liquid will squeeze the sliding column 701 downward, thereby pressurizing the pressure sensor 9 on the movable plate 703. The pressure sensor 9 transmits the pressure change signal to the control module, so that it can control the communication module to transmit an abnormal alarm to the system control background, and at the same time control the alarm 4 to start, so as to remind the on-site personnel. When the inlet and outlet hydraulic pressure is normal, the liquid in the pressure relief pipe 5 will slowly flow back into the valve body 1, and the movable plate 703 will reduce the pressure on the pressure sensor 9 under the action of the spring A702, thereby restoring the system to normal.

[0053] In this embodiment, if the inlet flow rate is large and the outlet flow rate is small, a large amount of liquid will quickly fill the space of the valve body 1 above the partition plate 11, and the continuously entering liquid will enter the pressure relief pipe 5, thereby regulating the pressure inside the valve body 1. When the liquid entering the pressure relief pipe 5 is on the surface of the flow hemispherical cover 7, the liquid will squeeze the sliding column 701 to move down, thereby putting pressure on the pressure sensor 9 of the movable plate 703. The pressure sensor 9 transmits the pressure change signal to the control module, so that it can control the communication module to transmit an abnormal alarm to the system control background, and at the same time control the alarm 4 to be activated to remind the on-site personnel.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A regulating valve, comprising a valve body (1), characterized in that, The valve body (1) is provided with a flow-slowing structure inside. The flow-slowing structure includes a partition plate (11) fixedly connected to one end face of the valve body (1), a guide groove (1201) provided on one side face of the partition plate (11), a valve core assembly that forms a sliding fit with the guide groove (1201) through a wear compensation component, and an inlet (101) and an outlet (102) respectively provided at both ends of the valve body (1) and distributed with different horizontal height differences. The valve body (1) is provided with a working chamber (103) inside, and an actuator is provided inside the working chamber (103). The actuator includes an electric telescopic column (13) fixedly connected to the inner wall of one side of the valve body (1), a push plate (1301) fixedly connected to the extension end of the electric telescopic column (13), and an adaptive adjustment part is connected between the push plate (1301) and the stop block (16). The valve core assembly includes a connecting plate (12) mounted on the top outer wall of the partition plate (11) and a stop block (16) fixedly connected to the bottom edge of the connecting plate (12). The outer surface of the stop block (16) is in contact with the inner surface of the valve body (1), and the outer diameter of the stop block (16) is larger than the inner diameter of the inlet (101). Wear-resistant pads (1601) are provided on both sides of the stop (16). The working chamber (103) is located on one side of the stop (16) and below the partition plate (11); The wear compensation assembly includes two sliding rods (1203) that are slidably connected to the inner walls of both sides of the stop (16), two or more limiting posts (1204) that are fixedly connected to the side of the sliding rods (1203) facing the actuator, limiting holes that are adapted to the limiting posts (1204) and are provided on the side of the stop (16) facing the actuator, and a pressure group, wherein the sliding rods (1203) and the guide groove (1201) form a sliding fit; The limiting post (1204) consists of a rubber post and a hemispherical top cover fixedly connected to one end of the rubber post; The pressure application assembly includes a liquid bladder (15) fixedly connected to one side of the push plate (1301) and the stop block (16), and a channel (1501) disposed inside the stop block (16) and connected to the liquid outlet of the liquid bladder (15) through a conduit. The channel (1501) is connected to the inner cavity of the stop block (16) which forms a sliding fit with the sliding rod (1203), so that liquid can enter the inner cavity of the stop block (16) from the channel (1501) to push the sliding rod (1203). The adaptive adjustment unit includes a guide post (1401) that slides with the inner wall of the push plate (1301), a limiting block (17) fixedly connected to the guide post (1401) and the stop block (16) on the corresponding side, and a spring B (14) sleeved on the outer wall of the guide post (1401).

2. A regulating valve according to claim 1, characterized in that, The valve body (1) has a fixed seat (6) fixedly connected to the outer circumference of the upward-facing side. The bottom inner wall of the fixed seat (6) has an actuator assembly (8) fixedly connected to it. The actuator assembly (8) includes a positioner, a communication module, and a control module.

3. A regulating valve according to claim 2, characterized in that, The outer circumferential wall of the valve body (1) is fixedly connected to a pressure-reducing pipe (5) that communicates with the inside of the valve body (1). A middle plate is fixedly connected to one side of the outer wall of the fixed base (6), and a pressure sensor (9) is fixedly connected to the top outer wall of the middle plate.

4. A regulating valve according to claim 3, characterized in that, The inner wall of the fixed base (6) is slidably connected to a movable plate (703). The top of the movable plate (703) is fixedly connected to a sliding column (701) that forms a sliding fit with the outer wall of the pressure relief tube (5). The top of the sliding column (701) is provided with a hemispherical cover (7) that is fixedly connected to the inner wall of the pressure relief tube (5). The outer wall of the sliding column (701) is fitted with a spring A (702). The two ends of the spring A (702) are respectively fixedly connected to the corresponding side of the movable plate (703) and the fixed base (6).

5. A regulating valve according to claim 4, characterized in that, A cover (3) is fixedly connected to the outer circumference of the valve body (1) located directly above the fixed seat (6), and a warning device (4) is fixedly connected to the top outer wall of the cover (3).

6. A regulating valve according to claim 5, characterized in that, The outer surface of the valve body (1) is provided with a protective coating (10).

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