Pressure-reducing and noise-reducing valve seat

Abstract

The utility model relates to the technical field of high-pressure-difference pipeline valves, and discloses a pressure-reducing and noise-reducing valve seat which comprises a main valve, a valve chamber is arranged in the main valve, a pilot valve is arranged at the top of the main valve, a sealing ring is fixedly connected to the connecting position of the main valve and the pilot valve, an energy-reducing plate is arranged below the sealing ring, and the energy-reducing plate is arranged below the sealing ring. A plurality of energy reducing holes are evenly formed in the outer side of the energy reducing plate, a piston is slidably connected into the energy reducing plate, one side of the piston is fixedly connected with one end of a valve rod core, and the other end of the valve rod core penetrates through and is fixedly connected with a valve seat. According to the multi-stage pressure reducing valve, the energy reducing plate arranged on the outer side of the valve chamber is matched with the energy reducing holes formed in the energy reducing plate, the current situation that a common pressure reducing valve can only conduct one-stage pressure reducing is changed, the silencing holes formed in the valve seat enable the valve to have a good silencing function, and the effect of reducing operation noise is achieved through multi-stage pressure reducing; the operating environment is effectively protected, noise can be absorbed in cooperation with the noise reduction diffuser, and auditory experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure differential pipeline valves, in particular to a pressure-reducing and noise-reducing valve seat. Background Art

[0002] The high-pressure steam produced by power plants and chemical companies needs to be reduced in pressure before it can be used later. Pressure reduction is usually achieved by a pressure reducing valve, which performs a first-stage pressure reduction on high-pressure steam. However, under conditions of large flow and high pressure difference, the first-stage pressure reduction will have a greater impact on the valve, causing the valve to vibrate and make noise. The pressure reducing and noise reduction valve seat is a device used to reduce fluid pressure and reduce noise. It is usually used in pipeline systems. It is designed to reduce pressure by changing the flow path of the fluid and reducing the flow rate, and to reduce the noise generated by the fluid when passing through the valve seat through a specific structure. The pressure reducing and noise reduction valve seat is widely used in various industrial fields, such as chemical, petroleum, natural gas, water treatment, etc., for fluid regulation and noise control in pipeline systems. Selecting a suitable pressure reducing and noise reduction valve seat requires consideration of factors such as fluid characteristics, working environment, flow requirements and noise restrictions.

[0003] In the prior art, under the working conditions of large flow and high pressure difference, the first-stage pressure reduction will have a greater impact on the valve, causing the valve to vibrate and make noise. At the same time, a general pressure reducing valve will have an energy dissipator installed inside, and energy dissipation holes will be provided on the surface of the energy dissipation valve. However, long-term contact with water flow will produce scale in the energy dissipation holes, resulting in reduced energy dissipation effect. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a pressure reducing and noise reducing valve seat, which aims to improve the problem that under the working conditions of large flow and high pressure difference, the first-stage pressure reduction will have a greater impact on the valve, causing the valve to vibrate and make noise. At the same time, a general pressure reducing valve will have an energy dissipator installed inside, and energy dissipation holes will be provided on the surface of the energy dissipation valve. However, long-term contact with water flow will produce scale in the energy dissipation holes, resulting in reduced energy dissipation effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure reducing and noise reducing valve seat, comprising a main valve, a valve chamber is arranged inside the main valve, a pilot valve is arranged on the top of the main valve, a sealing ring is fixedly connected to the connection between the main valve and the pilot valve, an energy reducing plate is arranged below the sealing ring, a plurality of energy reducing holes are evenly arranged on the outer side of the energy reducing plate, a piston is slidably connected inside the energy reducing plate, one end of the valve stem core is fixedly connected to one side of the piston, and the other end of the valve stem core penetrates and is fixedly connected to the valve seat.

[0006] Preferably, a brush is fixedly connected to the outer side of the top of the valve seat, and a plurality of silencer holes are evenly arranged on the outer bottom of the valve seat.

[0007] Preferably, one end of the main valve is fixedly connected to one end of a first connecting pipe, and the other end of the first connecting pipe is evenly provided with a plurality of screw holes.

[0008] Preferably, a noise reduction diffuser is fixedly connected to the other end of the main valve.

[0009] Preferably, a third connecting pipe is fixedly connected to one side of the main valve, and one end of a pilot valve is fixedly connected to the top of the third connecting pipe.

[0010] Preferably, a plurality of screws are uniformly penetrated and threadedly connected to the outer side of the pilot valve.

[0011] Preferably, a second connecting pipe is fixedly connected to the other side of the main valve.

[0012] Preferably, a water inlet is provided at one end of the first connecting pipe in the main valve, a water outlet is provided at one end of the noise reduction diffuser in the main valve, guide plates are symmetrically fixedly connected in the main valve, and a valve chamber is provided between the guide plates.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the energy reduction plate arranged on the outer side of the valve chamber and the energy reduction hole opened on the energy reduction plate are used to change the current situation that the general pressure reducing valve can only perform one-stage pressure reduction. The silencer hole opened on the valve seat makes it have a good silencer function. The multi-stage pressure reduction plays a role in reducing the operating noise and effectively protects the operating environment. At the same time, the noise reduction diffuser can absorb and diffuse the noise to reduce the concentration and intensity of the sound and improve the auditory experience.

[0015] 2. In the utility model, the piston drives the valve stem core to move to drive the valve seat to move. When the valve seat moves, it will drive the brush on the top of its outer side to move together. When the brush moves back and forth and rubs with the energy reduction hole, it will clean the inside of the energy reduction hole, remove the scale generated by the long-term contact with water in the energy reduction hole, and ensure its circulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the pressure reducing and noise reducing valve seat proposed by the utility model;

[0017] Figure 2 A top view of the pressure reducing and noise reducing valve seat proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the pressure reducing and noise reducing valve seat proposed by the utility model.

[0019] Legend:

[0020] 1. Main valve; 2. First connecting pipe; 3. Screw hole; 4. Noise reduction diffuser; 5. Second connecting pipe; 6. Third connecting pipe; 7. Screw; 8. Pilot valve; 9. Valve seat; 10. Valve stem core; 11. Water inlet; 12. Water outlet; 13. Piston; 14. Energy reduction plate; 15. Energy reduction hole; 16. Silence hole; 17. Brush; 18. Sealing ring; 19. Valve chamber; 20. Drain plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings of the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-Figure 3 The utility model provides an embodiment: a pressure reducing and noise reducing valve seat, comprising a main valve 1, a valve chamber 19 is arranged inside the main valve 1, a pilot valve 8 is arranged on the top of the main valve 1, a sealing ring 18 is fixedly connected to the connection between the main valve 1 and the pilot valve 8, the sealing ring 18 can achieve a good sealing effect to prevent liquid leakage, an energy reducing plate 14 is arranged below the sealing ring 18, a plurality of energy reducing holes 15 are evenly opened on the outer side of the energy reducing plate 14, a multi-layer pressure reducing structure can be formed by the energy reducing plate 14 and the energy reducing holes 15 inside the energy reducing plate 14, thereby reducing the generation of noise, a piston 13 is slidably connected inside the energy reducing plate 14, one side of the piston 13 is fixedly connected to one end of the valve stem core 10, the other end of the valve stem core 10 penetrates and is fixedly connected to the valve seat 9, the movement of the valve stem core 10 can be controlled by the piston 13, thereby adjusting the height of the valve seat 9, thereby achieving the purpose of adjusting the flow area.

[0023] Reference Figure 3 A brush 17 is fixedly connected to the outer side of the top of the valve seat 9, and a plurality of silencer holes 16 are evenly opened on the outer bottom of the valve seat 9. When the valve seat 9 moves, the brush 17 on the outer top will move together. When the brush 17 moves back and forth and rubs with the energy reduction hole 15, the inside of the energy reduction hole 15 will be cleaned, and the scale generated by the long-term contact with water in the energy reduction hole 15 will be removed to ensure its circulation effect. The silencer hole 16 has a good silencer function.

[0024] Reference Figure 1 and Figure 2One end of the main valve 1 is fixedly connected to one end of a first connecting pipe 2, and the other end of the first connecting pipe 2 is evenly provided with a plurality of screw holes 3. The other end of the main valve 1 is fixedly connected to a noise reduction diffuser 4. One side of the main valve 1 is fixedly connected to a third connecting pipe 6, and the top of the third connecting pipe 6 is fixedly connected to one end of a pilot valve 8. The other side of the main valve 1 is fixedly connected to a second connecting pipe 5, and the outside of the main valve 1 is connected to different connecting pipes.

[0025] Reference Figure 1 and Figure 3 A plurality of screws 7 are evenly penetrated and threadedly connected to the outside of the pilot valve 8 , and the pilot valve 8 is fixedly connected to the main valve 1 through the screws 7 .

[0026] Reference Figure 3 A water inlet 11 is provided at one end of the first connecting pipe 2 in the main valve 1, a water outlet 12 is provided at one end of the noise reduction diffuser 4 in the main valve 1, and guide plates 20 are symmetrically fixedly connected in the main valve 1, and a valve chamber 19 is provided between the guide plates 20. The interior of the main valve 1 is divided into areas by the guide plates 20, and the water inlet 11 and the water outlet 12 are provided to specify the flow direction of the water body.

[0027] Working principle: The first connecting pipe 2 is connected to other pipes, and then water flows into the main valve 1 from the water inlet 11. When the water flows to the valve chamber 19, the energy reduction plate 14 arranged on the outside of the valve chamber 19 cooperates with the energy reduction hole 15 opened on the energy reduction plate 14, which changes the current situation that the general pressure reducing valve can only perform one-stage pressure reduction. The silencer hole 16 opened on the valve seat 9 makes it have a good silencer function, and reduces the running noise through multi-stage pressure reduction. At the same time, the piston 13 drives the valve stem core 10 to move to drive the valve seat 9 to move. When the valve seat 9 moves, it will drive the brush 17 on the top of its outer side to move together. When the brush 17 moves back and forth and rubs with the energy reduction hole 15, it will clean the inside of the energy reduction hole 15, and remove the scale generated by the long-term contact with water in the energy reduction hole 15, so as to ensure its circulation effect. When water flows through the noise reduction diffuser 4 from the water outlet 12, part of the noise will be absorbed and diffused to reduce the concentration and intensity of the sound, thereby improving the auditory experience.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure reducing and noise reducing valve seat, comprising a main valve (1), characterized in that: A valve chamber (19) is provided inside the main valve (1), a pilot valve (8) is provided on the top of the main valve (1), a sealing ring (18) is fixedly connected to the connection between the main valve (1) and the pilot valve (8), an energy reduction plate (14) is provided below the sealing ring (18), a plurality of energy reduction holes (15) are evenly provided on the outer side of the energy reduction plate (14), a piston (13) is slidably connected inside the energy reduction plate (14), one end of a valve stem core (10) is fixedly connected to one side of the piston (13), and the other end of the valve stem core (10) penetrates and is fixedly connected to a valve seat (9); a brush (17) is fixedly connected to the outer side of the top of the valve seat (9), a plurality of silencer holes (16) are evenly provided on the outer bottom of the valve seat (9), and a noise reduction diffuser (4) is fixedly connected to the other end of the main valve (1).

2. The pressure reducing and noise reducing valve seat according to claim 1, characterized in that: One end of the main valve (1) is fixedly connected to one end of a first connecting pipe (2), and the other end of the first connecting pipe (2) is evenly provided with a plurality of screw holes (3).

3. The pressure reducing and noise reducing valve seat according to claim 1, characterized in that: A third connecting pipe (6) is fixedly connected to one side of the main valve (1), and one end of a pilot valve (8) is fixedly connected to the top of the third connecting pipe (6).

4. The pressure reducing and noise reducing valve seat according to claim 3, characterized in that: A plurality of screws (7) are evenly penetrated and threadedly connected to the outer side of the pilot valve (8).

5. The pressure reducing and noise reducing valve seat according to claim 1, characterized in that: A second connecting pipe (5) is fixedly connected to the other side of the main valve (1).

6. The pressure reducing and noise reducing valve seat according to claim 1, characterized in that: A water inlet (11) is provided at one end of the first connecting pipe (2) in the main valve (1), a water outlet (12) is provided at one end of the noise reduction diffuser (4) in the main valve (1), flow guide plates (20) are symmetrically fixedly connected in the main valve (1), and a valve chamber (19) is provided between the flow guide plates (20).

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