Low-noise oil pressure stop valve

Abstract

The utility model belongs to the technical field of oil pressure stop valves, and particularly relates to a low-noise oil pressure stop valve which comprises a valve body. When fluid in an oil pressure system enters the valve body through the water inlet pipe, the fluid firstly encounters the noise reduction disc, so that noise is preliminarily reduced, the first noise reduction holes formed in the noise reduction disc allow the fluid to pass through in a more dispersed and uniform mode, noise generated when the fluid directly impacts the interior of the valve body is further reduced, and the noise is reduced along with continuous flowing of the fluid. When fluid flows, the fluid contacts with the buffer pad and can absorb vibration and impact generated during flowing of the fluid, the buffer pad drives the spring to contract, then water flows down through the buffer pad, the noise level is further reduced, stable flowing of the fluid is guaranteed through the design of the buffer pad, extra noise generated by turbulent flow of the fluid is avoided, and noise is reduced. The noise reduction cover can further disperse and slow down the flow speed of fluid, the second noise reduction holes are the same as the first noise reduction holes, the second noise reduction holes and the first noise reduction holes work together to reduce noise to the maximum extent, and internal noise can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pressure stop valves, and specifically relates to a low-noise oil pressure stop valve. Background Technique

[0002] As an indispensable key component in the fluid control system, the oil pressure stop valve is widely used in many industrial fields such as petroleum, chemical industry, water conservancy, and electric power. Its main function is to regulate and control the flow of the medium (such as oil, water, etc.) in the pipeline by opening or closing the valve to ensure the safe and stable operation of the system. The design of the oil pressure stop valve usually emphasizes the sealing performance, high-pressure resistance ability, and operation convenience to meet the requirements under different working conditions;

[0003] However, in practical applications, there is a noise problem in the existing oil pressure stop valve due to the relatively fast water flow velocity inside. When the medium passes through the valve at a high speed, the hydrodynamic effect causes strong impacts on the inside of the valve body and its accessories (such as valve flaps and valve seats). This physical effect not only generates significant noise pollution, affecting the working environment and the health of personnel, but also may accelerate the wear of the valve, shorten its service life, and increase the maintenance cost. Therefore, we propose a low-noise oil pressure stop valve to solve the above problems. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a low-noise oil pressure stop valve, which solves the problems put forward in the above background technique.

[0006] (II) Technical Solutions

[0007] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0008] A low-noise oil pressure stop valve includes a valve body. A water inlet pipe is connected and fixed to the right side of the valve body, and a water outlet pipe is connected and fixed to the left side of the valve body. Flange plates are fixedly connected to both the water inlet pipe and the water outlet pipe. A noise reduction disc is fixedly connected to the inner wall of the water inlet pipe. A plurality of first noise reduction holes are formed in the noise reduction disc. A plurality of inclined buffer pads are fixedly connected to the inner wall of the water inlet pipe. A spring is fixedly connected between one side of the buffer pad and one side inner wall of the water inlet pipe. A noise reduction cover is fixedly connected to the bottom of the valve port of the valve body. A plurality of second noise reduction holes are formed in the bottom inner wall of the noise reduction cover.

[0009] Furthermore, a connecting plate is in movable contact with the top of the valve body. The connecting plate is threadedly connected to the top of the valve body through a plurality of bolts. The buffer pad is made of rubber material.

[0010] Further, a lead screw is rotatably connected to the top of the connecting plate, and the bottom end of the lead screw extends below the connecting plate and is threadedly connected to a moving rod.

[0011] Further, the end of the moving rod is fixedly connected to a valve core, and the valve core is in movable contact with the valve port of the valve body.

[0012] Further, two T-shaped rods are welded to the bottom of the connecting plate, a limiting block is slidably connected to the T-shaped rods, one side of the limiting block is fixedly connected to one side of the moving rod, and a turntable is fixedly connected to the top end of the lead screw.

[0013] Further, a threaded hole is formed in the moving rod, and the moving rod is threadedly connected to the lead screw through the threaded hole.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present utility model provides a low-noise oil pressure stop valve, which has the following beneficial effects:

[0016] In the present utility model, when the fluid (such as oil or water) in the oil pressure system enters the valve body through the water inlet pipe, it will first encounter a noise reduction disc. The design of the noise reduction disc is aimed at dispersing and slowing down the impact force of the fluid, thereby initially reducing the noise. The noise reduction disc is provided with first noise reduction holes, and these first noise reduction holes allow the fluid to pass through in a more dispersed and uniform manner, further reducing the noise generated by the direct impact of the fluid on the inside of the valve body. As the fluid continues to flow, it will contact the buffer pad, which can absorb the vibration and impact generated during the fluid flow. The buffer pad drives the spring to contract, and then the water flows down through the buffer pad, further reducing the noise level. At the same time, the design of the buffer pad also ensures the smooth flow of the fluid and avoids the additional noise generated by fluid turbulence. The noise reduction cover can further disperse and slow down the flow rate of the fluid, and the second noise reduction holes have the same function as the first noise reduction holes. They work together to minimize the noise and can effectively reduce the internal noise. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the valve body of the present utility model cut open;

[0019] Figure 3 is the present utility model Figure 2 of the inclined three-dimensional structural schematic diagram;

[0020] Figure 4 is the present utility model Figure 2 of the enlarged structural schematic diagram of area A.

[0021] In the figure: 1. Valve body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Flange; 5. Noise reduction plate; 6. First noise reduction hole; 7. Buffer pad; 8. Spring; 9. Noise reduction cover; 10. Second noise reduction hole; 11. Connecting plate; 12. Bolt; 13. Screw rod; 14. Moving rod; 15. Valve core; 16. Turntable; 17. Limit block; 18. T-shaped rod. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment

[0024] As Figures 1-4 shown, a low-noise oil pressure stop valve proposed in an embodiment of the present invention includes a valve body 1. The right side of the valve body 1 is connected and fixed with a water inlet pipe 2, and the left side of the valve body 1 is connected and fixed with a water outlet pipe 3. Flanges 4 are fixedly connected to both the water inlet pipe 2 and the water outlet pipe 3. A noise reduction plate 5 is fixedly connected to the inner wall of the water inlet pipe 2. Multiple first noise reduction holes 6 are formed in the noise reduction plate 5. Multiple inclined buffer pads 7 are fixedly connected to the inner wall of the water inlet pipe 2. A spring 8 is fixedly connected between one side of the buffer pad 7 and one side inner wall of the water inlet pipe 2. A noise reduction cover 9 is fixedly connected to the bottom of the valve port of the valve body 1. Multiple second noise reduction holes 10 are formed in the bottom inner wall of the noise reduction cover 9. During the working process, when the fluid (such as oil or water) in the oil pressure system enters the valve body 1 through the water inlet pipe 2, it will first encounter the noise reduction plate 5. The design of the noise reduction plate 5 is aimed at dispersing and slowing down the impact force of the fluid, thereby initially reducing the noise. The first noise reduction holes 6 are provided on the noise reduction plate 5, and these first noise reduction holes 6 allow the fluid to pass through in a more dispersed and uniform manner, further reducing the noise generated by the direct impact of the fluid on the inside of the valve body 1. As the fluid continues to flow, it will contact the buffer pad 7, which can absorb the vibration and impact generated during the fluid flow. The buffer pad 7 drives the spring 8 to contract, and then the water flows down through the buffer pad 7, further reducing the noise level. At the same time, the design of the buffer pad 7 also ensures the smooth flow of the fluid and avoids additional noise generated by fluid turbulence. The noise reduction cover 9 can further disperse and slow down the flow rate of the fluid, and the second noise reduction holes 10 have the same function as the first noise reduction holes 6. They work together to minimize the noise and can effectively reduce the internal noise.

[0025] In some embodiments, a connecting plate 11 is movably in contact with the top of the valve body 1. The buffer pad 7 is made of rubber material. The connecting plate 11 is threadedly connected to the top of the valve body 1 through multiple bolts 12.

[0026] In some embodiments, a lead screw 13 is rotatably connected to the top of the connecting plate 11. The bottom end of the lead screw 13 extends below the connecting plate 11 and is threadedly connected to a moving rod 14. The setting of the connecting plate 11 plays a supporting role.

[0027] In some embodiments, a valve core 15 is fixedly connected to the end of the moving rod 14, and the valve core 15 is in movable contact with the valve port of the valve body 1.

[0028] In some embodiments, two T-shaped rods 18 are welded to the bottom of the connecting plate 11. A limit block 17 is slidably connected to the T-shaped rods 18. One side of the limit block 17 is fixedly connected to one side of the moving rod 14. A turntable 16 is fixedly connected to the top end of the lead screw 13. The setting of the limit block 17 plays a limiting role.

[0029] In some embodiments, a threaded hole is formed in the moving rod 14, and the moving rod 14 is threadedly connected to the lead screw 13 through the threaded hole. The setting of the moving rod 14 plays a connecting role.

[0030] Working principle or structural principle: During use, it is connected to an external pipeline through the flange 4. During the working process, when the fluid (such as oil or water) in the oil pressure system enters the valve body 1 through the water inlet pipe 2, it will first encounter the noise reduction disc 5. The design of the noise reduction disc 5 is aimed at dispersing and slowing down the impact force of the fluid, thereby initially reducing the noise. The noise reduction disc 5 is provided with first noise reduction holes 6. These first noise reduction holes 6 allow the fluid to pass through in a more dispersed and uniform manner, further reducing the noise generated by the direct impact of the fluid on the inside of the valve body 1. As the fluid continues to flow, it will contact the buffer pad 7, which can absorb the vibration and impact generated during the fluid flow. The buffer pad 7 drives the spring 8 to contract, and then the water flows down through the buffer pad 7, further reducing the noise level. At the same time, the design of the buffer pad 7 also ensures the smooth flow of the fluid and avoids additional noise generated by fluid turbulence. The noise reduction cover 9 can further disperse and slow down the flow rate of the fluid, and the second noise reduction holes 10 have the same function as the first noise reduction holes 6. They work together to minimize the noise. When the valve body 1 needs to be closed, rotate the turntable 16. The turntable 16 drives the lead screw 13 to rotate. The lead screw 13 drives the moving rod 14 to move. The moving rod 14 drives the valve core 15 to move downward. At the same time, the moving rod 14 drives the limit block 17 to slide on the T-shaped rod 18, so that the valve core 15 is closed with the valve port on the valve body 1.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A low-noise oil pressure stop valve, comprising a valve body (1), characterized in that: On the right side of the valve body (1), a water inlet pipe (2) is connected and fixed. On the left side of the valve body (1), a water outlet pipe (3) is connected and fixed. Flange plates (4) are fixedly connected to both the water inlet pipe (2) and the water outlet pipe (3). A noise reduction plate (5) is fixedly connected to the inner wall of the water inlet pipe (2). A plurality of first noise reduction holes (6) are formed in the noise reduction plate (5). A plurality of inclined buffer pads (7) are fixedly connected to the inner wall of the water inlet pipe (2). A spring (8) is fixedly connected between one side of the buffer pad (7) and one side inner wall of the water inlet pipe (2). A noise reduction cover (9) is fixedly connected to the bottom of the valve port of the valve body (1). A plurality of second noise reduction holes (10) are formed in the bottom inner wall of the noise reduction cover (9).

2. The low-noise oil pressure stop valve according to claim 1, characterized in that: A connecting plate (11) is in movable contact with the top of the valve body (1). The connecting plate (11) is threadedly connected to the top of the valve body (1) through a plurality of bolts (12). The buffer pad (7) is made of rubber material.

3. The low-noise oil-pressure stop valve according to claim 2, wherein: A lead screw (13) is rotatably connected to the top of the connecting plate (11). The bottom end of the lead screw (13) extends below the connecting plate (11) and is threadedly connected to a moving rod (14).

4. The low-noise oil pressure stop valve according to claim 3, characterized in that: The end of the moving rod (14) is fixedly connected to a valve core (15). The valve core (15) is in movable contact with the valve port of the valve body (1).

5. The low-noise oil pressure stop valve according to claim 4, wherein: Two T-shaped rods (18) are welded to the bottom of the connecting plate (11). A limiting block (17) is slidably connected to the T-shaped rod (18). One side of the limiting block (17) is fixedly connected to one side of the moving rod (14). A turntable (16) is fixedly connected to the top end of the lead screw (13).

6. The low-noise oil pressure stop valve according to claim 5, wherein: A threaded hole is formed in the moving rod (14). The moving rod (14) is threadedly connected to the lead screw (13) through the threaded hole.

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