Low-noise type electric micro flow regulating valve

Abstract

The invention relates to the technical field of valves, and discloses a low-noise type electric micro flow regulating valve which comprises a valve body, the valve body is communicated with a water inlet pipe, a water outlet pipe, a blow-off pipe and a communicating pipe, a plug bolt is installed in the blow-off pipe in a threaded mode, a valve plate is fixedly installed in the valve body, the valve plate is provided with an inclined section and a horizontal section, and a through hole is formed in the horizontal section of the valve plate. A mounting barrel is coaxially arranged on the communicating pipe, a bottom plate is fixedly mounted at the end, close to the communicating pipe, of the mounting barrel, a valve rod is slidably mounted on the bottom plate, and a valve element used in cooperation with the through hole is fixedly mounted at the end, extending into the valve body, of the valve rod; a threaded cylinder is rotationally mounted in the mounting cylinder, a motor for driving the threaded cylinder to rotate is fixedly mounted on the mounting cylinder, and the threaded cylinder is in threaded connection with the valve rod. The device has the beneficial effects that along with reciprocating up-and-down movement of the first piston plate and the second piston plate, gas in the communicating pipe can be continuously pumped out and discharged, and the number of bubbles in water is reduced.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and specifically to a low-noise electric micro-flow regulating valve. Background Technology

[0002] A valve is a mechanical device installed in a fluid pipeline or system to control its flow.

[0003] When water flows through a pipe, the unstable pulsation of the water flow can cause vibrations in internal parts such as the valve core and valve stem, producing low-frequency rumbling. The water flow may also resonate with the valve body or pipe cavity, amplifying the noise. Existing valves use multi-channel, perforated plate or labyrinth flow channels to decompose a large pressure difference into multiple small pressure differences, significantly reducing the flow velocity and suppressing turbulence and cavitation, thereby achieving the purpose of noise reduction. However, when the water flows through the valve throttling orifice, corner or abrupt change in cross-section, the flow velocity increases sharply and the pressure drops sharply, which can easily generate strong turbulence and bubbles. When the bubbles burst, they generate high-frequency impact noise, resulting in poor noise reduction effect of the valve. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for use in flow control valves, thereby achieving low noise.

[0005] The objective of this invention can be achieved through the following technical solutions: A low-noise electric micro-flow regulating valve includes a valve body, which is connected to an inlet pipe, an outlet pipe, a drain pipe, and a connecting pipe. A plug bolt is threaded into the drain pipe. A valve plate is fixedly installed inside the valve body. The valve plate has an inclined section and a horizontal section, and the horizontal section of the valve plate has a through hole. A mounting cylinder is coaxially arranged on the connecting pipe. A base plate is fixedly installed at the end of the mounting cylinder near the connecting pipe. A valve stem is slidably installed on the base plate. A valve core that mates with the through hole is fixedly installed at the end of the valve stem that extends into the valve body. A threaded cylinder is rotatably installed inside the mounting cylinder, and a motor that drives the threaded cylinder to rotate is fixedly installed on the mounting cylinder. The threaded cylinder is threadedly connected to the valve stem. A first straight cylinder is fixedly installed inside the mounting cylinder on the base plate. The first straight cylinder is connected to a second straight cylinder arranged coaxially. The inner diameter of the second straight cylinder is larger than that of the first straight cylinder. The first straight cylinder is connected to a connecting pipe. A first piston plate is slidably installed inside the second straight cylinder, and an electric telescopic rod that drives the first piston plate to move is fixedly installed on the second straight cylinder. The first piston plate has air holes and a first sealing gasket is fixedly installed on the first piston plate. The second straight cylinder is connected to a one-way exhaust pipe. A vertical rod is fixedly installed on the first piston plate, and two sets of second piston plates located inside the first straight cylinder are fixedly installed on the vertical rod.

[0006] As a further aspect of the present invention: a first flange is fixedly installed at the end of the water inlet pipe and the water outlet pipe away from the valve body.

[0007] As a further aspect of the present invention: a second flange is fixedly installed on the connecting pipe, and the second flange is used in conjunction with a third flange fixedly installed at the end of the mounting cylinder, and the third flange and the second flange are fixedly connected by screws.

[0008] As a further aspect of the present invention: multiple sets of L-shaped guide plates are fixedly installed on the valve plate, and the guide plates are staggered to form a channel.

[0009] As a further aspect of the present invention: a limiting bracket located inside the mounting cylinder is fixedly installed on the valve stem. The limiting bracket is L-shaped and its vertical section is slidably connected to a limiting plate fixedly installed inside the mounting cylinder.

[0010] As a further aspect of the present invention: a coaxially arranged sealing ring is fixedly installed inside the exhaust pipe, and a second sealing gasket is fixedly installed on the sealing ring.

[0011] As a further embodiment of the present invention: a base plate is provided on the surface of the bottom plate located inside the connecting pipe. The base plate is slidably mounted on the bottom plate by multiple sets of sliding rods. Multiple sets of springs distributed around the sliding rods are fixedly installed on the bottom plate. The movable end of the spring is fixedly connected to the end of the sliding rod. When the base plate contacts the bottom plate, it closes the bottom of the first cylinder.

[0012] As a further embodiment of the present invention: a first perforated plate is fixedly installed on the valve plate, the first perforated plate is set at an angle with the horizontal plane, and a second perforated plate is fixedly installed on the side of the first perforated plate away from the valve stem, a gap is set between the second perforated plate and the first perforated plate, a mounting bracket is fixedly installed on the base plate, and a striking rod for striking the upper end of the second perforated plate is slidably installed on the mounting bracket.

[0013] The beneficial effects of this invention are: (1) In this invention, as the first piston plate and the second piston plate move up and down repeatedly, the gas in the connecting pipe can be continuously extracted and discharged, reducing the number of bubbles in the water, reducing the high-frequency impact noise generated by bubble bursting, achieving further noise reduction of the valve body, and improving the noise reduction effect of the valve body.

[0014] (2) In this invention, when the liquid enters the valve body from the inlet pipe, the liquid flow direction will shift upward under the action of the valve plate. Under the entrainment of the liquid, the bubbles in the liquid can gather upward into the connecting pipe as much as possible. The connecting pipe is set to provide space for the gas to stay. At the same time, since the connecting pipe is close to the right angle with the liquid flow direction, the area where the connecting pipe is located is a flow dead angle, which allows the gas to stay in the connecting pipe better, which is convenient for subsequent discharge, further improving the bubble discharge capacity and improving the noise reduction effect of the valve body.

[0015] (3) In this invention, the lower end of the first straight cylinder is sealed in time by the substrate to prevent a large amount of liquid from entering the first straight cylinder, thereby preventing a large amount of liquid from being ejected from the first straight cylinder and carrying a large amount of gas away from the lower end of the first straight cylinder, so that a large amount of gas can accumulate in the lower end area of ​​the first straight cylinder, further improving the efficiency of subsequent exhaust.

[0016] (4) In this invention, the first mesh plate and the second mesh plate can further guide the water flow slightly. At the same time, the first mesh plate and the second mesh plate can provide more attachment areas for small bubbles in the liquid, so that a large number of small bubbles in the liquid can attach to the first mesh plate and the second mesh plate and converge into large bubbles, improve the welfare of bubbles in the liquid, and further improve the effect of bubbles converging at the top of the connecting pipe. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 3 This is a cross-sectional view of the valve body in this invention.

[0021] Figure 4 This is a schematic diagram of the mounting cylinder in this invention.

[0022] Figure 5 This is a cross-sectional view of the mounting cylinder in this invention.

[0023] Figure 6 yes Figure 2 Enlarged schematic diagram of point A1 in the middle.

[0024] Figure 7 yes Figure 2 Enlarged diagram of point A2 in the middle.

[0025] In the diagram: 1. Valve body; 2. Inlet pipe; 3. Outlet pipe; 4. First flange; 5. Connecting pipe; 6. Second flange; 7. Mounting cylinder; 8. Third flange; 9. Base plate; 10. Valve stem; 11. Valve core; 12. Motor; 13. Threaded cylinder; 14. Limiting bracket; 15. Limiting plate; 16. Valve plate; 17. Through hole; 18. Guide plate; 19. Drain pipe; 20. Plug bolt; 21. First mesh plate; 22. Second mesh plate; 23. First straight cylinder; 24. Second straight cylinder; 25. Electric telescopic rod; 26. First piston plate; 27. Air hole; 28. First sealing gasket; 29. ​​Exhaust pipe; 30. Sealing ring; 31. Second sealing gasket; 32. Vertical rod; 33. Striking rod; 34. Second piston plate; 35. Base plate; 36. Sliding rod; 37. Spring; 38. Mounting bracket. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-7 As shown, this invention is a low-noise electric micro-flow regulating valve, including a valve body 1. The valve body 1 is connected to an inlet pipe 2, an outlet pipe 3, a drain pipe 19, and a connecting pipe 5. A first flange 4 is fixedly installed at the end of the inlet pipe 2 and the outlet pipe 3 away from the valve body 1. A plug bolt 20 is threaded into the drain pipe 19. A valve plate 16 is fixedly installed inside the valve body 1. The valve plate 16 has an inclined section and a horizontal section, and the horizontal section of the valve plate 16 has a through hole 17. Multiple sets of L-shaped guide plates 18 are fixedly installed on the valve plate 16, and the guide plates 18 are staggered to form a channel. A coaxially arranged mounting cylinder 7 is provided on the connecting pipe 5. A second flange 6 is fixedly installed on the connecting pipe 5. The second flange 6 is connected to the mounting cylinder 7. The third flange 8 at the end of the cylinder 7 is used in conjunction with the second flange 6 and is fixedly connected by screws. The end of the cylinder 7 near the connecting pipe 5 is fixedly installed with a base plate 9. The valve stem 10 is slidably installed on the base plate 9. The end of the valve stem 10 that extends into the valve body 1 is fixedly installed with a valve core 11 that mates with the through hole 17. The threaded cylinder 13 is rotatably installed inside the cylinder 7 and a motor 12 that drives the threaded cylinder 13 to rotate is fixedly installed on the cylinder 7. The threaded cylinder 13 is threadedly connected to the valve stem 10. The valve stem 10 is fixedly installed with a limiting bracket 14 located inside the cylinder 7. The limiting bracket 14 is L-shaped and the vertical section of the limiting bracket 14 is slidably connected to the limiting plate 15 fixedly installed inside the cylinder 7. A first straight cylinder 23 located inside the mounting cylinder 7 is fixedly installed on the base plate 9. The first straight cylinder 23 is connected to a second straight cylinder 24 arranged coaxially. The inner diameter of the second straight cylinder 24 is larger than the inner diameter of the first straight cylinder 23. The first straight cylinder 23 is connected to the connecting pipe 5. A first piston plate 26 is slidably installed inside the second straight cylinder 24, and an electric telescopic rod 25 that drives the first piston plate 26 to move is fixedly installed on the second straight cylinder 24. An air hole 27 is opened on the first piston plate 26, and a first sealing gasket 28 is fixedly installed on the first piston plate 26. The second straight cylinder 24 is connected to a one-way exhaust pipe 29. A coaxially arranged sealing ring 30 is fixedly installed inside the exhaust pipe 29. A second sealing gasket 31 is fixedly installed on the sealing ring 30. A vertical rod 32 is fixedly installed on the first piston plate 26, and two sets of second piston plates 34 located inside the first straight cylinder 23 are fixedly installed on the vertical rod 32.

[0028] In practical application, the inlet pipe 2 and outlet pipe 3 are connected to the pipeline through the first flange 4. During use, the liquid enters the valve body 1 through the inlet pipe 2. The motor 12 drives the threaded cylinder 13 to rotate. The threaded cylinder 13 moves the valve stem 10 through the thread. The valve stem 10 moves the valve core 11, causing the valve core 11 to disengage from the through hole 17, thus opening the valve. The opening degree of the valve is adjusted by controlling the height of the valve core 11. After the valve is opened, the liquid can pass through the through hole 17 and through the valve plate 16. After passing through the through hole 17, the liquid flows along the channel formed by multiple sets of guide plates 18 and is discharged from the outlet pipe 3. The guide plates 18 form a labyrinth flow channel, which decomposes the high pressure difference of the fluid into multiple small pressure drops, gradually reducing energy and reducing the vibration caused by the high pressure difference of the fluid, thus achieving noise reduction. Simultaneously, the electric telescopic rod 25 drives the first piston plate 26 to reciprocate. In the initial state, the lower second piston plate 34 is flush with the lower surface of the bottom plate 9, and the area above the second piston plate 34 is under negative pressure. When the first piston plate 26 moves closer to the bottom plate 9, the action of the vertical rod 32 causes the lowermost second piston plate 34 to leave the first straight cylinder 23. At this time, the vertical rod 32 stops moving, and the upper second piston plate 34 is still located inside the second straight cylinder 24. At this time, the liquid in the valve body 1 can enter the first straight cylinder 23. At the same time, the air in the valve body 1 will be at the top of the water level in the valve body 1 due to buoyancy, thus allowing the liquid to enter. Air from the top of the connecting pipe 5 will also enter the first straight cylinder 23, and the air will occupy a higher position in the first straight cylinder 23. Then the second piston plate 34 moves upward, so that the lowermost second piston plate 34 enters the first straight cylinder 23. When the upper second piston plate 34 is disengaged from the first straight cylinder 23, it stops. At this time, the air in the first straight cylinder 23 will enter the second straight cylinder 24. Since the area above the second piston plate 34 is under negative pressure, the air will push the first sealing pad 28 to rotate and flow through the air hole 27 to the top of the first piston plate 26. As a result, only a small amount of air can exist below the first piston plate 26. Subsequently, the second piston plate 34 moves downward again, and the liquid entering the first straight cylinder 23 is discharged. At the same time, new air in the connecting pipe 5 re-enters the first straight cylinder 23. When the first piston plate 26 moves upward, the first piston plate 26 pushes the air above it into the exhaust pipe 29. The air pushes the second sealing pad 31 to rotate and flows out from the closed ring 30, thereby realizing the discharge of air in the area above the first piston plate 26. When the first piston plate 26 descends again, the area above the first piston plate 26 will become a negative pressure area again. Thus, with the reciprocating up and down movement of the first piston plate 26 and the second piston plate 34, the gas in the connecting pipe 5 can be continuously extracted and discharged, reducing the number of bubbles in the water, reducing the high-frequency impact noise generated by bubble bursting, and further reducing the noise of the valve body 1, thereby improving the noise reduction effect of the valve body 1. Meanwhile, when the liquid enters the valve body 1 from the inlet pipe 2, the liquid flow direction will shift upward under the action of the valve plate 16. Under the entrainment of the liquid, the air bubbles in the liquid can gather upward as much as possible into the connecting pipe 5. The connecting pipe 5 is set to provide space for the gas to stay. At the same time, since the connecting pipe 5 is close to the right angle with the liquid flow direction, the area where the connecting pipe 5 is located is a flow dead angle, which allows the gas to stay better in the connecting pipe 5, which is convenient for subsequent discharge, further improving the air bubble discharge capacity and improving the noise reduction effect of the valve body 1.

[0029] Please see Figure 2 , Figure 3 , Figure 7 As shown, the present invention is a low-noise electric micro-flow regulating valve. A base plate 35 is provided on the surface of the base plate 9 located inside the connecting pipe 5. The base plate 35 is slidably mounted on the base plate 9 by multiple sets of slide rods 36. Multiple sets of springs 37 distributed around the slide rods 36 are fixedly installed on the base plate 9. The movable end of the spring 37 is fixedly connected to the end of the slide rod 36. When the base plate 35 contacts the base plate 9, it closes the bottom of the first straight cylinder 23.

[0030] Specifically, a first perforated plate 21 is fixedly installed on the valve plate 16. The first perforated plate 21 is set at an angle with the horizontal plane, and a second perforated plate 22 is fixedly installed on the side of the first perforated plate 21 away from the valve stem 10. A gap is set between the second perforated plate 22 and the first perforated plate 21. A mounting bracket 38 is fixedly installed on the base plate 35. A striking rod 33 for striking the upper end of the second perforated plate 22 is slidably installed on the mounting bracket 38.

[0031] In practical application, when the second piston plate 34 moves downward, it pushes the base plate 35 to move and compresses the spring 37. Subsequently, when the second piston plate 34 moves upward, the base plate 35 moves with the second piston plate 34 and promptly seals the lower end of the first straight cylinder 23, preventing a large amount of liquid from entering the first straight cylinder 23. This prevents a large amount of liquid from spraying out of the first straight cylinder 23, carrying a large amount of gas away from the lower end of the first straight cylinder 23, so that a large amount of gas can accumulate in the lower area of ​​the first straight cylinder 23, further improving the efficiency of subsequent exhaust. The first mesh plate 21 and the second mesh plate 22 can further guide the water flow slightly. At the same time, the first mesh plate 21 and the second mesh plate 22 can provide more attachment areas for small bubbles in the liquid, so that a large number of small bubbles in the liquid can attach to the first mesh plate 21 and the second mesh plate 22 and converge into large bubbles, improving the welfare of bubbles in the liquid and further improving the effect of bubbles converging at the top of the connecting pipe 5. Meanwhile, when the substrate 35 moves downward, the striking rod 33 will strike the second mesh plate 22. Under the action of vibration, some small bubbles are prevented from adhering to the first mesh plate 21 and the second mesh plate 22, while accelerating the detachment of bubbles, further improving the effect of bubbles converging at the top of the connecting pipe 5.

Claims

1. A low-noise electric micro-flow regulating valve, comprising a valve body (1), wherein the valve body (1) is connected to an inlet pipe (2), an outlet pipe (3), a drain pipe (19), and a connecting pipe (5), and a plug bolt (20) is installed on the internal thread of the drain pipe (19), characterized in that, A valve plate (16) is fixedly installed inside the valve body (1). The valve plate (16) has an inclined section and a horizontal section, and the horizontal section of the valve plate (16) has a through hole (17). A coaxially arranged mounting cylinder (7) is provided on the connecting pipe (5). A base plate (9) is fixedly installed at the end of the mounting cylinder (7) near the connecting pipe (5). A valve stem (10) is slidably installed on the base plate (9). A valve core (11) that works with the through hole (17) is fixedly installed at the end of the valve stem (10) that extends into the valve body (1). A threaded cylinder (13) is rotatably installed inside the mounting cylinder (7), and a motor (12) that drives the threaded cylinder (13) to rotate is fixedly installed on the mounting cylinder (7). The threaded cylinder (13) is threadedly connected to the valve stem (10). The base plate (9) is fixedly installed with a first straight cylinder (23) located inside the mounting cylinder (7). The first straight cylinder (23) is connected to a second straight cylinder (24) arranged coaxially. The inner diameter of the second straight cylinder (24) is larger than the inner diameter of the first straight cylinder (23). The first straight cylinder (23) is connected to the connecting pipe (5). The second straight cylinder (24) is slidably installed with a first piston plate (26) and an electric telescopic rod (25) that drives the first piston plate (26) to move is fixedly installed on the second straight cylinder (24). The first piston plate (26) has an air hole (27) and a first sealing gasket (28) is fixedly installed on the first piston plate (26). The second straight cylinder (24) is connected to a one-way exhaust pipe (29). A vertical rod (32) is fixedly installed on the first piston plate (26). Two sets of second piston plates (34) located inside the first straight cylinder (23) are fixedly installed on the vertical rod (32).

2. The low-noise electric micro-flow regulating valve according to claim 1, characterized in that, The inlet pipe (2) and outlet pipe (3) are both fixedly installed with a first flange (4) at the end away from the valve body (1).

3. The low-noise electric micro-flow regulating valve according to claim 1, characterized in that, A second flange (6) is fixedly installed on the connecting pipe (5). The second flange (6) is used in conjunction with a third flange (8) fixedly installed at the end of the mounting cylinder (7). The third flange (8) and the second flange (6) are fixedly connected by screws.

4. A low-noise electric micro-flow regulating valve according to claim 1, characterized in that, Multiple sets of L-shaped guide plates (18) are fixedly installed on the valve plate (16), and the guide plates (18) are staggered to form a channel.

5. A low-noise electric micro-flow regulating valve according to claim 1, characterized in that, A limiting bracket (14) is fixedly installed on the valve stem (10) inside the mounting cylinder (7). The limiting bracket (14) is L-shaped and its vertical section is slidably connected to the limiting plate (15) fixedly installed inside the mounting cylinder (7).

6. A low-noise electric micro-flow regulating valve according to claim 1, characterized in that, A coaxially arranged sealing ring (30) is fixedly installed inside the exhaust pipe (29), and a second sealing gasket (31) is fixedly installed on the sealing ring (30).

7. A low-noise electric micro-flow regulating valve according to claim 1, characterized in that, The base plate (9) is provided with a base plate (35) on the surface inside the connecting pipe (5). The base plate (35) is slidably mounted on the base plate (9) by multiple sets of sliding rods (36). Multiple sets of springs (37) are fixedly installed on the base plate (9) and distributed around the sliding rods (36). The movable end of the spring (37) is fixedly connected to the end of the sliding rod (36). When the base plate (35) contacts the base plate (9), it closes the bottom of the first straight cylinder (23).

8. A low-noise electric micro-flow regulating valve according to claim 7, characterized in that, A first mesh plate (21) is fixedly installed on the valve plate (16). The first mesh plate (21) is set at an angle with the horizontal plane. A second mesh plate (22) is fixedly installed on the side of the first mesh plate (21) away from the valve stem (10). There is a gap between the second mesh plate (22) and the first mesh plate (21). A mounting bracket (38) is fixedly installed on the base plate (35). A striking rod (33) for striking the upper end of the second mesh plate (22) is slidably installed on the mounting bracket (38).

Images