Automatic pressure reduction regulating valve

Abstract

This invention discloses an automatic pressure-reducing regulating valve, comprising a main body, a guiding pressure-reducing mechanism, and a direct-flow pressure-reducing mechanism. The main body includes a valve body with a valve stem inside. A valve core is mounted at the bottom end of the valve stem. The outer wall of the valve core has an arc-shaped protrusion with a V-shaped groove. In use, high-pressure water enters the valve body, impacting a second damping ring that compresses a second spring within a groove. The first and second damping rings work together to initially buffer the pressure reduction. The remaining high-pressure water enters the valve core, its flow direction is changed by the arc-shaped protrusion, and it is guided into the inlet cavity through the V-shaped groove. It impacts an arc-shaped plate, causing the telescopic sleeve to contract and compress the first spring, further weakening the impact. A ring pressure sensor detects the pressure in real time. The combined action of the two automatic pressure-reducing mechanisms enables automatic distribution and pressure control when high-pressure water enters the valve body.

Description

Technical Field

[0001] This invention relates to the field of control valve technology, and more specifically, to a control valve for automatically distributing pressure reduction. Background Technology

[0002] Electric control valves are key equipment in the field of industrial automation control. They are driven by an electric actuator to move the valve core. The core of the valve consists of a valve body, an electric actuator, and a control system. The actuator receives electrical signals and converts them into mechanical displacement to change the valve core opening, thereby achieving continuous flow regulation. They are characterized by high regulation accuracy, fast response speed, and convenient remote control. They do not require manual operation, are compatible with intelligent control systems, and are widely used in industries such as petroleum, chemical, power, and water treatment. They can stabilize production processes and improve energy efficiency, making them an important component of modern industrial control.

[0003] However, conventional electric regulating valves often suffer from poor pressure reduction when handling high-pressure water flow, making it difficult to effectively buffer and distribute high-pressure water flow and automatically regulate water pressure. This makes the valve body susceptible to damage from high-pressure impacts when closed. At the same time, the internal structure of the valve body lacks an effective self-cleaning mechanism, allowing impurities in the water flow to easily adhere to the inner wall of the valve body, especially the surface of the valve core. Cleaning requires disassembling parts, which is cumbersome and not only affects the service life of the regulating valve but also reduces the stability of equipment operation due to frequent disassembly. This makes it difficult to meet the requirements of high-pressure water pipeline systems for pressure regulation and convenient maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic pressure-reducing regulating valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic pressure-reducing regulating valve, comprising a main body mechanism, a guiding pressure-reducing mechanism, and a direct-acting pressure-reducing mechanism:

[0006] The main structure includes a valve body, a valve stem is provided inside the valve body, a valve core is installed at one bottom end of the valve stem, an arc-shaped protrusion is provided on the outer wall of the valve core, and a V-shaped groove is provided on the arc-shaped protrusion.

[0007] The guiding pressure reduction mechanism is installed on the valve body. This mechanism guides the high-pressure water flow and buffers and reduces pressure when the high-pressure water enters the valve body. The guiding pressure reduction mechanism includes an integrally formed inlet cavity on the valve body. A guide cylinder is embedded on one side of the inlet cavity. A telescopic sleeve is provided inside the guide cylinder. The telescopic sleeve is composed of two hollow tubes that slide together. One end of the telescopic sleeve is fixedly connected to the inner wall of the guide cylinder, and the other end is fixedly connected to an arc-shaped plate. A first spring is fitted onto the outer wall of the telescopic sleeve. An annular pressure sensor is installed on the inner wall of the inlet cavity near the guide cylinder, and one end of the first spring abuts against the annular pressure sensor.

[0008] The arc-shaped plate is provided with a brush on the side near the valve core, and a number of equally spaced water outlet holes are provided on the side of the arc-shaped plate near the valve core. The water inlet of the water outlet hole is connected to the opening at one end of the telescopic sleeve.

[0009] The direct-flow pressure reduction mechanism is installed on the inner wall of the inlet of the valve body. The direct-flow pressure reduction mechanism is used to buffer and reduce the pressure when high-pressure water flows directly into the valve body. The direct-flow pressure reduction mechanism includes an annular plate, which is fixedly connected to the inner wall of the inlet of the valve body. A first damping ring is fixedly connected to one side of the annular plate. The outer wall of the first damping ring has multiple grooves distributed equidistantly around the circumference. A second spring is fixedly connected inside the grooves. A second damping ring is fixedly connected to one end of the second spring.

[0010] Preferably, an actuator motor is mounted on the top of the valve body via a bracket, and the rotating shaft of the actuator motor is connected to one end of the top of the valve stem via a coupling.

[0011] Preferably, a controller is mounted on the outer wall of the bracket, the controller is electrically connected to the actuator motor, and the controller is signal-connected to the annular pressure sensor.

[0012] Preferably, the inner walls on both sides of the water inlet cavity are provided with sliding grooves, and L-shaped sliders are fixedly connected to both sides of the arc plate, with the L-shaped sliders slidably installed inside the sliding grooves.

[0013] Preferably, sealing strips are fixedly connected to all four outer walls of the arc-shaped plate.

[0014] Preferably, a limiting ring is fixedly connected to the side of the arc-shaped plate near the telescopic sleeve, and one end of the first spring is located inside the limiting ring.

[0015] Preferably, a plug is threadedly connected to the outer wall of one end of the guide cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When the present invention is used, high-pressure water flows into the valve body, and the water flow impacts the second damping ring, causing it to compress the second spring in the groove. The first damping ring and the second damping ring cooperate to initially buffer and reduce the pressure. The remaining high-pressure water flows into the valve core, changes its flow direction through the arc-shaped protrusion, and is guided into the water inlet cavity through the V-shaped groove. It impacts the arc-shaped plate, causing the telescopic sleeve to contract and compress the first spring, further weakening the impact. The ring pressure sensor senses the pressure in real time. The cooperation of the two automatic pressure reduction mechanisms can realize automatic distribution and pressure reduction control when the high-pressure water flows into the valve body.

[0017] In addition, one end of the telescopic sleeve is fixed to the inner wall of the guide cylinder, and the other end is connected to the arc plate. When the external water channel is connected to the guide cylinder, the water source can enter the arc plate through one end of the telescopic sleeve and flow out through the water outlet to flush the inner wall of the valve body and the outer wall of the valve core, thus achieving self-cleaning. At this time, the motor drives the valve core to rotate, which, together with the brush cleaning, improves the service life and can be cleaned without disassembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the automatic pressure-reducing regulating valve according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the automatic pressure-reducing regulating valve according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the direct-acting pressure-reducing mechanism in the automatic pressure-reducing regulating valve according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional structural diagram of the automatic pressure-reducing regulating valve according to an embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional three-dimensional structural diagram of the automatic pressure-reducing regulating valve according to an embodiment of the present invention;

[0023] Figure 6 This is an embodiment of the present invention. Figure 3 A magnified structural diagram of part A in the middle;

[0024] Figure 7 This is a schematic diagram of the arc-shaped plate and hollow rod in the automatic pressure-reducing regulating valve according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the arc-shaped plate and water outlet in the automatic pressure-reducing regulating valve according to an embodiment of the present invention.

[0026] Figure 9 This is an embodiment of the present invention. Figure 5 A magnified structural diagram of part B.

[0027] In the diagram: 1. Main body; 11. Valve body; 12. Bracket; 13. Actuator motor; 14. Valve stem; 15. Valve core; 16. Arc-shaped protrusion; 17. V-groove; 18. Controller; 2. Guide pressure reducing mechanism; 21. Water inlet chamber; 22. Guide cylinder; 23. Plug; 24. Arc plate; 25. Telescopic sleeve; 26. First spring; 27. Brush; 28. Annular pressure sensor; 29. ​​Water outlet; 3. Direct pressure reducing mechanism; 31. Annular plate; 32. First damping ring; 33. Second damping ring; 34. Groove; 35. Second spring; 4. L-shaped slider; 5. Sealing strip; 6. Limiting ring; 7. Slide groove. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-3 The embodiments of the present invention provide an automatic pressure reduction regulating valve, comprising: a main body mechanism 1, a guide pressure reduction mechanism 2, and a direct pressure reduction mechanism 3.

[0030] Among them, such as Figures 1-4 As shown, the main body 1 includes a valve body 11, inside which is a valve stem 14. A valve core 15 is installed at the bottom end of the valve stem 14. The outer wall of the valve core 15 has an arc-shaped protrusion 16, and a V-shaped groove 17 is provided on the arc-shaped protrusion 16. An actuator motor 13 is installed on the top of the valve body 11 through a bracket 12. The rotating shaft of the actuator motor 13 is connected to the top end of the valve stem 14 through a coupling. When the main body 1 is working, the actuator motor 13 is fixed to the top of the valve body 11 through the bracket 12, and its rotating shaft is connected to the valve stem 14 through the coupling, driving the valve stem 14 to drive the valve core 15 to rotate. The arc-shaped protrusion 16 and the V-shaped groove 17 on the outer wall of the valve core 15 can change the direction of water flow.

[0031] In this embodiment, as Figures 1-6 As shown, the direct-flow pressure-reducing mechanism 3 includes an annular plate 31, which is fixedly connected to the inner wall of the inlet of the valve body 11. A first damping ring 32 is fixedly connected to one side of the annular plate 31. The outer wall of the first damping ring 32 has a plurality of grooves 34 distributed equidistantly around the circumference. A second spring 35 is fixedly connected inside the grooves 34. A second damping ring 33 is fixedly connected to one end of the second spring 35.

[0032] When high-pressure water enters the valve body 11, the direct-flow pressure reduction mechanism 3 can play its role first. The high-pressure water impacts the second damping ring 33 at the water inlet of the valve body 11, causing it to compress the second spring 35 in the groove 34. The first damping ring 32 and the second damping ring 33 cooperate to initially buffer and reduce pressure. The annular plate 31 plays a limiting role for the first damping ring 32 and the second damping ring 33.

[0033] In this embodiment, as Figures 1-8 As shown, the guide pressure reducing mechanism 2 is installed on the valve body 11. The guide pressure reducing mechanism 2 includes an integrally formed water inlet cavity 21 set on the valve body 11. A guide cylinder 22 is embedded on one side of the water inlet cavity 21. A plug 23 is threadedly connected to the outer wall of one end of the guide cylinder 22. The plug 23 can close one end of the opening of the guide cylinder 22. A telescopic sleeve 25 is provided inside the guide cylinder 22. The telescopic sleeve 25 is composed of two hollow tubes that slide and fit together. One end of the telescopic sleeve 25 is fixedly connected to the inner wall of the guide cylinder 22. An arc plate 24 is fixedly connected to the other end of the telescopic sleeve 25. A first spring 26 is sleeved on the outer wall of the telescopic sleeve 25. An annular pressure sensor 28 is installed on the inner wall of the water inlet cavity 21 near the guide cylinder 22. One end of the first spring 26 abuts against the annular pressure sensor 28.

[0034] When high-pressure water enters the valve core 15 of the valve body 11, it can change the flow direction by utilizing the arc-shaped protrusion 16 on the valve core 15, and be guided into the water inlet chamber 21 of the guide pressure reducing mechanism 2 through the V-shaped groove 17. It impacts the arc plate 24, causing the telescopic sleeve 25 to contract and compress the first spring 26. At this time, the water flow guided into the water inlet chamber 21 can push the arc plate 24 to move and contact the inner wall of the water inlet chamber 21, further weakening the impact of the high-pressure water flow on the valve body 11. At the same time, when the first spring 26 is compressed, the annular pressure sensor 28 can detect the pressure change in real time.

[0035] Furthermore, a controller 18 is installed on the outer wall of the bracket 12. The controller 18 is electrically connected to the actuator motor 13 and signal-connected to the annular pressure sensor 28. The annular pressure sensor 28 is used to collect water pressure data in real time and transmit it to the controller 18. The controller 18 automatically adjusts the action of the actuator motor 13 according to the preset pressure threshold and water flow changes, thereby realizing the automatic opening and closing of the valve and pressure reduction regulation, ensuring that the outlet water pressure is stable within a safe range.

[0036] like Figure 5 , Figure 7 and Figure 9As shown, the inner walls on both sides of the water inlet cavity 21 are provided with grooves 7, and L-shaped sliders 4 are fixedly connected to both sides of the arc plate 24. The L-shaped sliders 4 are slidably installed inside the grooves 7. The cooperation between the grooves 7 and the L-shaped sliders 4 ensures that the arc plate 24 maintains a stable linear guide during the movement, preventing the arc plate 24 from shifting due to water flow impact, thereby ensuring the reliability of the guide pressure reducing mechanism 2.

[0037] Reference Figure 7 A limiting ring 6 is fixedly connected to the side of the arc plate 24 near the telescopic sleeve 25. One end of the first spring 26 is located inside the limiting ring 6. The limiting ring 6 provides a fixed support position for the first spring 26 when the arc plate 24 moves, preventing the first spring 26 from being displaced during the extension and retraction process.

[0038] In another embodiment, such as Figure 1 As shown, a brush 27 is provided on the side of the arc plate 24 near the valve core 15, and several equally spaced water outlet holes 29 are provided on the side of the arc plate 24 near the valve core 15. The water inlet of the water outlet hole 29 is connected to the opening at one end of the telescopic sleeve 25. When the external water circuit is connected to the guide cylinder 22, the water source can enter the water outlet hole 29 in the arc plate 24 through one end of the telescopic sleeve 25. When the water flows out of the water outlet hole 29 through the telescopic sleeve 25, it can flush the inner wall of the valve body 11 and the outer wall of the valve core 15, completing the self-cleaning operation of the main internal structure of the regulating valve. At this time, the operator can drive the valve core 15 to rotate by the actuator motor 13, and the brush 27 can be used to rotate the valve core 15 to achieve physical cleaning.

[0039] In actual operation, the end of the guide cylinder 22 away from the arc plate 24 can be connected to an external cleaning water source pipeline via a thread. The pipeline is equipped with a solenoid valve, which is controlled by the controller 18 to open at regular intervals, for example, once every 24 hours, each time lasting 30 seconds. The cleaning water source pressure is 0.5-1MPa, and it enters the water outlet 29 through the telescopic sleeve 25. At this time, the actuator motor 13 drives the valve core 15 to rotate at a speed of 5r / min, and the brush 27 adheres to the outer wall of the valve core 15 to achieve cleaning.

[0040] Specifically, sealing strips 5 are fixedly connected to the outer walls of the arc plate 24. The sealing strips 5 form a sealing fit between the arc plate 24 and the inner wall of the water inlet cavity 21, effectively preventing water bypass leakage.

[0041] It should be noted that the elastic coefficient of the first spring 26 is 500-800 N / m, and the elastic coefficient of the second spring 35 is 300-500 N / m. Both are made of fatigue-resistant alloy spring steel. The first damping ring 32 and the second damping ring 33 are both made of nitrile rubber and have a water pressure resistance of ≥10 MPa.

[0042] Based on the above technical solution, the working steps of this solution are summarized as follows: When the regulating valve provided by this invention is used, when the high-pressure water flow enters the valve body 11, the direct-flow pressure reduction mechanism 3 can play its role first. The high-pressure water flow impacts the second damping ring 33 at the water inlet of the valve body 11, causing it to compress the second spring 35 in the groove 34. The first damping ring 32 and the second damping ring 33 cooperate to initially buffer and reduce the pressure. The annular plate 31 plays a limiting role for the first damping ring 32 and the second damping ring 33.

[0043] In addition, when the remaining high-pressure water flows into the valve core 15 of the valve body 11, it can change the flow direction by utilizing the arc-shaped protrusion 16 on the valve core 15, and be guided into the water inlet chamber 21 of the guide pressure reducing mechanism 2 through the V-shaped groove 17. It impacts the arc plate 24, causing the telescopic sleeve 25 to contract and compress the first spring 26. At this time, the water flow guided into the water inlet chamber 21 can push the arc plate 24 to move and contact the inner wall of the water inlet chamber 21, further weakening the impact of the high-pressure water flow on the valve body 11. At the same time, when the first spring 26 is compressed, the annular pressure sensor 28 can sense the pressure change in real time. Through the cooperation of the direct pressure reducing mechanism 3 and the guide pressure reducing mechanism 2, the pressure is reduced, realizing the automatic distribution and pressure reduction of the high-pressure water flow, and automatically regulating the pressure brought by the high-pressure water flow.

[0044] In addition, the telescopic sleeve 25 in the guide pressure reducing mechanism 2 consists of two hollow tubes that can be slidably connected to each other. One end of the telescopic sleeve 25 is fixed to the inner wall of the guide cylinder 22, so that when the external water channel is connected to the guide cylinder 22, the water source can enter the water outlet 29 in the arc plate 24 through one end of the telescopic sleeve 25. When the water flows out of the water outlet 29 through the telescopic sleeve 25, it can flush the inner wall of the valve body 11 and the outer wall of the valve core 15, completing the self-cleaning operation of the main internal structure of the regulating valve. At this time, the operator can drive the valve core 15 to rotate by the actuator motor 13, and use the brush 27 to clean the valve core 15 by rotation. This improves the service life of the internal structure of the regulating valve and completes the cleaning work without disassembly.

[0045] All parts not described in this invention are the same as or can be implemented using existing technology. Although embodiments of the invention 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 the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A regulating valve for automatically distributing reduced pressure, characterized in that, It includes the main body mechanism (1), the guiding pressure reduction mechanism (2), and the direct-acting pressure reduction mechanism (3): The main body (1) includes a valve body (11), a valve stem (14) is provided inside the valve body (11), a valve core (15) is installed at one bottom end of the valve stem (14), an arc-shaped protrusion (16) is provided on the outer wall of the valve core (15), and a V-shaped groove (17) is provided on the arc-shaped protrusion (16). The guiding pressure reduction mechanism (2) is installed on the valve body (11). The guiding pressure reduction mechanism (2) is used to guide the high-pressure water flow and buffer and reduce the pressure when the high-pressure water flow enters the valve body (11). The guiding pressure reduction mechanism (2) includes an integrally formed water inlet cavity (21) on the valve body (11). A guide cylinder (22) is embedded on one side of the water inlet cavity (21). The guide cylinder (22) is provided with a telescopic sleeve (25) inside. The telescopic sleeve (25) consists of two The hollow tubes are slidably connected together. One end of the telescopic sleeve (25) is fixedly connected to the inner wall of the guide cylinder (22), and the other end of the telescopic sleeve (25) is fixedly connected to an arc plate (24). A first spring (26) is sleeved on the outer wall of the telescopic sleeve (25). An annular pressure sensor (28) is installed on the inner wall of the water inlet cavity (21) near the guide cylinder (22). One end of the first spring (26) abuts against the annular pressure sensor (28). The arc plate (24) is provided with a brush (27) on the side near the valve core (15), and the arc plate (24) is provided with a number of equally spaced water outlet holes (29) on the side near the valve core (15). The water inlet of the water outlet hole (29) is connected to the opening at one end of the telescopic sleeve (25). The direct-flow pressure reduction mechanism (3) is installed on the inner wall of the inlet of the valve body (11). The direct-flow pressure reduction mechanism (3) is used to buffer and reduce the pressure when the high-pressure water flows directly into the valve body (11). The direct-flow pressure reduction mechanism (3) includes an annular plate (31). The annular plate (31) is fixedly connected to the inner wall of the inlet of the valve body (11). A first damping ring (32) is fixedly connected to one side of the annular plate (31). A plurality of grooves (34) are distributed equidistantly on the outer wall of the first damping ring (32). A second spring (35) is fixedly connected inside the groove (34). A second damping ring (33) is fixedly connected to one end of the second spring (35).

2. The automatic pressure-reducing regulating valve according to claim 1, characterized in that: An actuator motor (13) is mounted on the top of the valve body (11) via a bracket (12), and the rotating shaft of the actuator motor (13) is connected to one end of the top of the valve stem (14) via a coupling.

3. The automatic pressure-reducing regulating valve according to claim 2, characterized in that: A controller (18) is installed on the outer wall of the bracket (12). The controller (18) is electrically connected to the actuator motor (13) and is signal-connected to the annular pressure sensor (28).

4. The automatic pressure-reducing regulating valve according to claim 1, characterized in that: The inner walls of both sides of the water inlet cavity (21) are provided with sliding grooves (7), and the two sides of the arc plate (24) are fixedly connected with L-shaped sliders (4), which are slidably installed inside the sliding grooves (7).

5. The automatic pressure-reducing regulating valve according to claim 1, characterized in that: The outer walls of the arc-shaped plate (24) are all fixedly connected with sealing strips (5).

6. The automatic pressure-reducing regulating valve according to claim 1, characterized in that: The arc plate (24) is fixedly connected to a limiting ring (6) on the side near the telescopic sleeve (25), and one end of the first spring (26) is located inside the limiting ring (6).

7. The automatic pressure-reducing regulating valve according to claim 1, characterized in that: A plug (23) is threadedly connected to the outer wall of one end of the guide cylinder (22).

Images