A reversing valve with noise reduction function

Abstract

This utility model provides a reversing valve with noise reduction function, relating to the field of reversing valve technology. It includes a reversing valve body with a trapezoidal cavity inside and near the top. A feed pipe is fixedly connected to the top of the reversing valve body, communicating with the trapezoidal cavity. Symmetrically arranged circular cavities are also inside the reversing valve body near the bottom, with connecting holes connecting the trapezoidal and circular cavities. A water outlet is provided at the bottom of each circular cavity. A circular hole is also provided inside the reversing valve body at the circular cavity. In this utility model, through the synergistic effect of "fluid flow stabilization design (trapezoidal cavity, cone head, and fixed sleeve combination, plus mechanical vibration buffering (spring and convex rod structure), and noise propagation isolation (sound insulation cylinder)," it can effectively reduce fluid impact noise and mechanical vibration noise, thereby improving the production environment and meeting the needs of precision equipment, quiet workshops, and other scenarios.

Description

Technical Field

[0001] This utility model relates to the field of directional valve technology, and in particular to a directional valve with noise reduction function. Background Technology

[0002] In industrial automation and hydraulic / pneumatic systems (such as machinery manufacturing, automobile production, and intelligent equipment), directional control valves are core components for controlling fluid flow and switching the actions of actuators. As noise control requirements in production environments increase (such as workshop noise reduction and precision equipment support), the noise generated by fluid impact and valve core vibration during the operation of traditional directional control valves has become a major concern, affecting the production environment and interfering with the coordinated operation of equipment. This noise problem is particularly pronounced under high-frequency switching and high-pressure fluid conditions (such as hydraulic robotic arms and automated production lines), driving the development of directional control valve technology with noise reduction capabilities.

[0003] Existing directional valves often have poorly designed internal flow channels (such as right-angle turns or sudden expansion and contraction), resulting in turbulent fluid flow, severe pressure pulsation, and high noise peaks during directional switching, which interfere with operators and surrounding equipment. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the internal flow channel of the existing reversing valve is usually poorly designed (such as right-angle turns or sudden expansion and contraction), which leads to turbulent fluid flow, severe pressure pulsation, high noise peak during reversal, and interference with operators and surrounding equipment. Therefore, a reversing valve with noise reduction function is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a reversing valve with noise reduction function, comprising a reversing valve body, wherein a trapezoidal cavity is formed inside the reversing valve body near the top, a feed pipe is fixedly connected to the top of the reversing valve body, the feed pipe communicates with the trapezoidal cavity, circular cavities are symmetrically formed inside the reversing valve body near the bottom, a connecting hole is connected between the trapezoidal cavity and the circular cavity, a water outlet is formed at the bottom of each circular cavity, a circular hole is formed inside the reversing valve body at the circular cavity, a rotating column is embedded and rotatably connected inside the circular hole, a turntable is sleeved and fixedly connected to the surface of the rotating column within the circular cavity, a vertical hole and a horizontal hole are respectively formed on the surface of the two turntables, a cylinder is fixedly connected to the bottom inner wall of the trapezoidal cavity near the center, a convex groove is formed at the top of the cylinder, a convex rod is embedded inside the convex groove, a spring is fixedly connected to the bottom of the convex rod, a cone is fixedly connected to the top of the convex rod, and a fixing sleeve is fixedly connected to the bottom of the cone near the edge.

[0006] Preferably, the bottom of the reversing valve body and the outlet hole are both fixed and connected to an outlet pipe.

[0007] Preferably, sealing rings are embedded and fixedly connected to the inner wall of the circular hole and on both sides of the circular cavity.

[0008] Preferably, a motor is fixedly connected to one end of the reversing valve body, and the output end of the motor is fixedly connected to one end of the rotating column.

[0009] Preferably, a soundproof cylinder is embedded and fixedly connected to the inner wall of the trapezoidal cavity.

[0010] Preferably, the inner diameter of the fixing sleeve is adapted to the outer arc wall diameter of the cylinder.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, through the synergistic effect of "fluid flow stabilization design (trapezoidal cavity, cone head and fixed sleeve cooperation, plus mechanical vibration buffer (spring and convex rod structure) and noise transmission isolation (sound insulation cylinder)", it can effectively reduce fluid impact noise and mechanical vibration noise, thereby improving the production environment and meeting the needs of precision equipment, quiet workshops and other scenarios.

[0013] 2. In this utility model, the flow channel switching design of trapezoidal cavity, rotating column and turntable can make the fluid flow smoother. Combined with spring buffer valve core impact, it can reduce noise while ensuring the switching response speed and flow control accuracy. Attached Figure Description

[0014] Figure 1 A three-dimensional view of the overall structure of a reversing valve with noise reduction function is provided for this utility model;

[0015] Figure 2 This utility model provides an overall structural cross-sectional view of a reversing valve with noise reduction function;

[0016] Figure 3 This utility model provides a partial structural cross-sectional view of a reversing valve with noise reduction function;

[0017] Figure 4 This utility model presents a partial three-dimensional structural view of a reversing valve with noise reduction function.

[0018] Legend: 1. Reversing valve body; 2. Trapezoidal cavity; 3. Feed pipe; 4. Circular cavity; 5. Connecting hole; 6. Water outlet hole; 7. Circular hole; 8. Rotary column; 9. Turntable; 10. Vertical hole; 11. Horizontal hole; 12. Sealing ring; 13. Water outlet pipe; 14. Motor; 15. Sound insulation cylinder; 16. Cylindrical column; 17. Convex groove; 18. Convex rod; 19. Spring; 20. Conical head; 21. Fixing sleeve. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1, such as Figure 1-4 As shown, this utility model provides a reversing valve with noise reduction function, including a reversing valve body 1. A trapezoidal cavity 2 is formed inside the reversing valve body 1 near the top. A feed pipe 3 is fixedly connected to the top of the reversing valve body 1, communicating with the trapezoidal cavity 2. Circular cavities 4 are symmetrically formed inside the reversing valve body 1 near the bottom. A connecting hole 5 connects the trapezoidal cavity 2 and the circular cavity 4. A water outlet hole 6 is formed at the bottom of each circular cavity 4. A circular hole 7 is formed inside the reversing valve body 1 at the location of the circular cavity 4, and the circular hole 7 is embedded and rotated. A rotating column 8 is connected, and a turntable 9 is fitted and fixedly connected to the surface of the rotating column 8 and located inside the circular cavity 4. The surfaces of the two turntables 9 are respectively provided with vertical holes 10 and horizontal holes 11. A cylinder 16 is fixedly connected to the bottom inner wall of the trapezoidal cavity 2 near the center. A convex groove 17 is provided on the top of the cylinder 16. A convex rod 18 is embedded in the convex groove 17. A spring 19 is fixedly connected to the bottom of the convex rod 18. A cone 20 is fixedly connected to the top of the convex rod 18. A fixing sleeve 21 is fixedly connected to the bottom of the cone 20 near the edge.

[0022] The overall effect of Embodiment 1 is as follows: a trapezoidal cavity 2 is provided inside the reversing valve body 1 near the top; a feed pipe 3 is fixedly connected to the top of the reversing valve body 1, and the feed pipe 3 communicates with the trapezoidal cavity 2, allowing fluid to enter the trapezoidal cavity 2 from the feed pipe 3; circular cavities 4 are symmetrically provided inside the reversing valve body 1 near the bottom; a connecting hole 5 connects the trapezoidal cavity 2 and the circular cavity 4; a water outlet 6 is provided at the bottom of each circular cavity 4; a circular hole 7 is provided inside the reversing valve body 1 at the circular cavity 4; a rotating column 8 is embedded and rotatably connected inside the circular hole 7; a turntable 9 is sleeved and fixedly connected to the surface of the rotating column 8 within the circular cavity 4; and two rotating... The surface of the disc 9 is provided with vertical holes 10 and horizontal holes 11, which can be used to rotate the rotating column 8 so that the vertical holes 10 and horizontal holes 11 are aligned with the connecting hole 5 and the water outlet hole 6 respectively. A cylinder 16 is fixedly connected to the bottom inner wall of the trapezoidal cavity 2 near the center. A convex groove 17 is provided on the top of the cylinder 16. A convex rod 18 is embedded in the convex groove 17. A spring 19 is fixedly connected to the bottom of the convex rod 18. A cone 20 is fixedly connected to the top of the convex rod 18. A fixing sleeve 21 is fixedly connected to the bottom of the cone 20 near the edge. This can make the fluid impact on the cone 20 and make the convex rod 18 squeeze the spring 19, which can reduce the impact force of the fluid.

[0023] Example 2, as Figure 1-4 As shown, the bottom of the reversing valve body 1 and the outlet hole 6 are both fixed and connected to the outlet pipe 13; the inner wall of the circular hole 7 and both sides of the circular cavity 4 are both embedded and fixedly connected to the sealing ring 12; one end of the reversing valve body 1 is fixedly connected to the motor 14, and the output end of the motor 14 is fixedly connected to one end of the rotating column 8; the inner wall of the trapezoidal cavity 2 is embedded and fixedly connected to the sound insulation cylinder 15; the inner diameter of the fixed sleeve 21 is adapted to the outer arc wall diameter of the cylinder 16.

[0024] The overall effect of Embodiment 2 is as follows: water outlet pipe 13 is fixed and connected to the bottom of the reversing valve body 1 at the water outlet 6, which can achieve the effect of water outlet; sealing rings 12 are embedded and fixedly connected to the inner wall of the circular hole 7 on both sides of the circular cavity 4, which can achieve the effect of sealing between the rotating column 8 and the circular hole 7; a motor 14 is fixedly connected to one end of the reversing valve body 1, and the output end of the motor 14 is fixedly connected to one end of the rotating column 8, which can achieve the effect of the motor 14 driving the rotating column 8 to rotate; a sound insulation cylinder 15 is embedded and fixedly connected to the inner wall of the trapezoidal cavity 2, which can achieve the effect of sound insulation; and the inner diameter of the fixing sleeve 21 is adapted to the outer arc diameter of the cylinder 16, which can achieve the effect of the fixing sleeve 21 sliding up and down on the cylinder 16.

[0025] Working principle: Fluid enters trapezoidal cavity 2 through feed pipe 3. The gradual structure of trapezoidal cavity 2 guides the fluid to diffuse smoothly, reducing initial turbulence. Cone head 20 cooperates with fixed sleeve 21 to form "flexible throttling". Spring 19 absorbs the impact kinetic energy of fluid through the elastic deformation of convex rod 18, further stabilizing the flow and reducing noise. Sound insulation cylinder 15 isolates the fluid noise in trapezoidal cavity 2 from propagating to the outside of valve body. Motor 14 drives rotating column 8 to rotate, driving turntable 9 to rotate synchronously. Through the corresponding cooperation of vertical hole 10, horizontal hole 11 with connecting hole 5 and water outlet hole 6, fluid reversal is achieved. The spring 19 and convex rod 18 structure buffer the axial impact of the cone 20, reduce the rigid collision between the valve core (cone 20, fixed sleeve 21, cylinder 16) and the valve body, and suppress mechanical vibration. The sealing ring 12 enhances the sealing between the rotating column 8 and the circular hole 7, weakens vibration transmission. Under high pressure conditions, the compression of the spring 19 increases, and the throttling effect of the cone 20 and the fixed sleeve 21 is enhanced, stabilizing the fluid pressure. During high-frequency reversing, the lightweight design of the rotating column 8 and the rotating disk 9, and the rapid response of the spring 19 buffer, ensure that the reversing speed and noise reduction effect are coordinated, adapting to complex operating requirements.

[0026] The wiring diagrams of the reversing valve body 1 and the motor 14 in this utility model are common knowledge in the field. Their working principle is a well-known technology. The appropriate model is selected according to the actual use. Therefore, the control method and wiring layout of the reversing valve body 1 and the motor 14 will not be explained in detail.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A reversing valve with noise reduction function, comprising a reversing valve body (1), characterized in that: The reversing valve body (1) has a trapezoidal cavity (2) inside and near the top. A feed pipe (3) is fixedly connected to the top of the reversing valve body (1). The feed pipe (3) communicates with the trapezoidal cavity (2). Circular cavities (4) are symmetrically opened inside the reversing valve body (1) near the bottom. A connecting hole (5) is connected between the trapezoidal cavity (2) and the circular cavity (4). A water outlet hole (6) is opened at the bottom of each circular cavity (4). A circular hole (7) is opened inside the reversing valve body (1) at the circular cavity (4). A rotating column (8) is embedded in and rotatably connected to the circular hole (7). The surface of the rotating column (8) Turntables (9) are fitted and fixedly connected to each other in the circular cavity (4). The surfaces of the two turntables (9) are respectively provided with vertical holes (10) and horizontal holes (11). A cylinder (16) is fixedly connected to the bottom inner wall of the trapezoidal cavity (2) near the center. A convex groove (17) is provided on the top of the cylinder (16). A convex rod (18) is embedded in the convex groove (17). A spring (19) is fixedly connected to the bottom of the convex rod (18). A cone (20) is fixedly connected to the top of the convex rod (18). A fixing sleeve (21) is fixedly connected to the bottom of the cone (20) near the edge.

2. A reversing valve with noise reduction function according to claim 1, characterized in that: The bottom of the reversing valve body (1) and the outlet hole (6) are fixed and connected to the outlet pipe (13).

3. A reversing valve with noise reduction function according to claim 1, characterized in that: Sealing rings (12) are embedded and fixedly connected to the inner wall of the circular hole (7) and on both sides of the circular cavity (4).

4. A reversing valve with noise reduction function according to claim 1, characterized in that: One end of the reversing valve body (1) is fixedly connected to a motor (14), and the output end of the motor (14) is fixedly connected to one end of the rotating column (8).

5. A reversing valve with noise reduction function according to claim 1, characterized in that: The inner wall of the trapezoidal cavity (2) is embedded with and fixedly connected to a sound insulation cylinder (15).

6. A reversing valve with noise reduction function according to claim 1, characterized in that: The inner diameter of the fixed sleeve (21) is adapted to the outer arc diameter of the cylinder (16).

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