Hydraulic proportional valve
By introducing bus plate and spoiler structures into the hydraulic proportional valve, the impact and wear of hydraulic oil on the valve body is solved, and the service life of the equipment is extended.
Patent Information
- Application Number
- CN202422312502.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-20
AI Technical Summary
During the use of existing hydraulic proportional valves, the impact and wear of hydraulic oil on the valve body leads to a shortened service life.
A hydraulic proportional valve is designed. By setting a bus plate and a spoiler structure in the oil inlet channel, the hydraulic oil converges through the bus plate before entering the buffer channel and is blocked by the spoiler in the buffer channel, reducing impact and wear on the inner chamber of the valve body.
It extends the service life of the hydraulic proportional valve, reduces wear and impact inside the valve body, and improves the reliability of the equipment.
Smart Images
Figure CN223164769U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solenoid valves, and particularly relates to a hydraulic proportional valve. Background Art
[0002] A normally high (open) hydraulic proportional valve can adjust the working current of an electromagnet, change the magnitude of the magnetic force received by an armature assembly, and thus linearly adjust the pressure of the fluid at the oil outlet (control port) by controlling the opening degree of the valve port. It is widely used in some hydraulic control mechanical parts, such as piston cylinders, etc. By using this valve, the pressure at the inlet of the hydraulic system can be accurately adjusted and controlled, reducing equipment failures or equipment damage caused by pressure fluctuations or changes in the hydraulic system, and reducing resource waste. Therefore, this hydraulic proportional valve is designed, which is of great significance to fluid systems with precise control requirements for some inlet pressures. Content of the Utility Model
[0003] In order to solve the above problems, the embodiment of the utility model provides a hydraulic proportional valve that can slow down the impact of hydraulic oil on the inside of the valve body, thereby extending the service life.
[0004] The embodiment of the utility model specifically adopts the following technical solutions to achieve the above purpose: A hydraulic proportional valve includes a valve body, a valve core is arranged inside the valve body, a commutation module is arranged at the lower part of the valve body, and a driving module for driving the valve core to displace is arranged at the upper part. The commutation module includes an oil inlet arranged at the lower part, an oil inlet channel is arranged at the oil inlet, an oil discharge port is arranged at the upper part, and a buffer channel is arranged at the lower part of the oil discharge port.
[0005] As a further improvement of the above technical solution:
[0006] A confluent concave is arranged at one end of the oil inlet channel far from the oil inlet, a through hole is arranged at the top of the confluent concave, and a confluent plate is arranged on the inner side wall of the oil inlet channel.
[0007] The confluent plate is arc-shaped and the thickness gradually decreases from the side wall of the oil inlet channel towards the inside.
[0008] The number of the confluent plates is multiple and they are all evenly distributed along the circumferential direction of the oil inlet.
[0009] A buffer body is arranged inside the buffer channel, a pressure relief valve is arranged at the upper part of the buffer body, and the lower part of the buffer body is communicated with the oil inlet channel.
[0010] The buffer body includes a clamping sleeve, a guide post sleeved outside the valve core is arranged at the axial center position of the clamping sleeve, and a flow disturbing plate is arranged between the guide post and the inner side wall of the clamping sleeve.
[0011] A buffer slope is provided at the lower end of the guide post, and a guide hole coaxial with the valve core is provided inside the guide post.
[0012] The guide hole is frustum-shaped and its diameter gradually decreases from top to bottom.
[0013] The number of spoiler plates is multiple and they are evenly distributed along the circumferential direction of the guide post.
[0014] The spoiler plates are spiral, and a flow-through gap is reserved between adjacent spoiler plates.
[0015] The beneficial effects of the embodiments of the present utility model are as follows: This hydraulic proportional valve includes a valve body. A valve core is arranged inside the valve body. A commutation module is arranged at the lower part of the valve body, and a drive module for driving the displacement of the valve core is arranged at the upper part. The commutation module includes an oil inlet arranged at the lower part, an oil inlet channel is arranged at the oil inlet, an oil discharge port is arranged at the upper part, and a buffer channel is arranged at the lower part of the oil discharge port. Hydraulic oil enters from the oil inlet. When it is in the oil inlet channel, it converges through a confluence plate and flows out through a through hole in the concave part of the confluence, and enters the buffer channel. After entering the buffer channel, it is blocked by the spoiler plates, reducing the impact and wear on the internal cavity of the valve body, and playing a role in extending the service life. Description of the Drawings
[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 It is a bottom view of the present utility model;
[0018] Figure 3 is Figure 2 A sectional view along A-A;
[0019] Figure 4 It is a schematic diagram of the structure of the sealing body in the present utility model.
[0020] In the figure: 1. Valve body; 2. Valve core; 3. Oil inlet; 4. Oil inlet channel; 5. Buffer channel; 6. Through hole; 7. Buffer body; 8. Pressure relief valve; 9. Clamping sleeve; 10. Guide post; 11. Spoiler plate; 12. Buffer slope; 13. Guide hole; 14. Flow-through gap; 15. Confluence concave; 16. Confluence plate; 17. Oil discharge port. Detailed Embodiments
[0021] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.
[0022] Such as Figures 1-4As shown in the figure, the hydraulic proportional valve of this embodiment includes a valve body 1. A spool 2 is arranged inside the valve body 1. A commutation module is arranged at the lower part of the valve body 1, and a drive module for driving the displacement of the spool 2 is arranged at the upper part. The drive module uses a coil and an armature for cooperation. The commutation module includes an oil inlet 3 at the lower part, an oil inlet channel 4 is arranged at the oil inlet 3, an oil discharge port 17 is arranged at the upper part, and a buffer channel 5 is arranged at the lower part of the oil discharge port 17.
[0023] One end of the oil inlet channel 4 away from the oil inlet 3 is provided with a confluent concave 15. A through hole 6 is arranged at the top of the confluent concave 15. A confluent plate 16 is arranged on the inner side wall of the oil inlet channel 4. The design of the confluent plate 16 can accelerate the entry of hydraulic oil when the oil enters.
[0024] The confluent plate 16 is arc-shaped and its thickness gradually decreases from the side wall of the oil inlet channel 4 towards the inside.
[0025] The number of the confluent plates 16 is multiple and they are all evenly distributed along the circumferential direction of the oil inlet 3.
[0026] A buffer body 7 is arranged in the buffer channel 5. A pressure relief valve 8 is arranged at the upper part of the buffer body 7. The lower part of the buffer body 7 is communicated with the oil inlet channel 4. The buffer body 7 includes a clamping sleeve 9. A guide post 10 sleeved outside the spool 2 is arranged at the axial center position of the clamping sleeve 9. A spoiler plate 11 is arranged between the guide post 10 and the inner side wall of the clamping sleeve 9. The buffer body 7 can obstruct the hydraulic oil and reduce the impact force of the oil on the inner cavity of the valve body 1.
[0027] A buffer slope 12 is arranged at the lower end of the guide post 10. A guide hole 13 coaxially distributed with the spool 2 is arranged inside the guide post 10. The guide hole 13 is frustum-shaped and its diameter gradually decreases from top to bottom. The lower part of the guide hole is attached to the side wall of the spool 2, which plays a guiding role when the spool 2 moves up and down. The upper part is designed with an opening, and the hydraulic oil can flow into the guide hole 13, which plays a lubricating role and reduces the wear of the spool 2.
[0028] The number of the spoiler plates 11 is multiple and they are all evenly distributed along the circumferential direction of the guide post 10.
[0029] The spoiler plates 11 are spiral, and a flow-through gap 14 is reserved between adjacent two spoiler plates 11.
[0030] Working principle / assembly process of this solution: The hydraulic oil enters from the oil inlet 3. When it is in the oil inlet channel 5, it is converged by the confluent plate 16 and flows out from the through hole 6 of the confluent concave 15, and then enters the buffer channel. After entering the buffer channel 5, it is blocked by the spoiler plate 11, reducing the impact and wear on the inner cavity of the valve body 1, and playing a role in extending the service life.
[0031] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0032] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0033] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles or devices / equipment.
[0034] So far, the technical solutions of the present utility model have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.
Claims
1. A hydraulic proportional valve, comprising a valve body (1), characterized in that: A valve core (2) is arranged inside the valve body (1). A commutation module is arranged at the lower part of the valve body (1), and a driving module for driving the displacement of the valve core (2) is arranged at the upper part. The commutation module includes an oil inlet (3) arranged at the lower part. An oil inlet passage (4) is arranged at the oil inlet (3). An oil discharge port (17) is arranged at the upper part, and a buffer passage (5) is arranged at the lower part of the oil discharge port (17).
2. The hydraulic proportional valve according to claim 1, wherein: One end of the oil inlet passage (4) far away from the oil inlet (3) is provided with a confluent concave portion (15). A through hole (6) is arranged at the top of the confluent concave portion (15). A confluent plate (16) is arranged on the inner side wall of the oil inlet passage (4).
3. The hydraulic proportional valve according to claim 2, wherein: The confluent plate (16) is arc-shaped and its thickness gradually decreases from the side wall of the oil inlet passage (4) towards the inside.
4. The hydraulic proportional valve according to claim 2, wherein: The number of the confluent plates (16) is multiple and they are all evenly distributed along the circumferential direction of the oil inlet (3).
5. The hydraulic proportional valve according to any one of claims 1-4, characterized in that: A buffer body (7) is arranged inside the buffer passage (5). A pressure relief valve (8) is arranged at the upper part of the buffer body (7), and the lower part of the buffer body (7) is communicated with the oil inlet passage (4).
6. The hydraulic proportional valve according to claim 5, characterized in that: The buffer body (7) includes a clamping sleeve (9). A guide post (10) sleeved outside the valve core (2) is arranged at the axial center position of the clamping sleeve (9). A spoiler (11) is arranged between the guide post (10) and the inner side wall of the clamping sleeve (9).
7. The hydraulic proportional valve according to claim 6, wherein: A buffer slope (12) is arranged at the lower end of the guide post (10). A guide hole (13) coaxially distributed with the valve core (2) is arranged inside the guide post (10).
8. The hydraulic proportional valve according to claim 7, wherein: The guide hole (13) is frustum-shaped and its diameter gradually decreases from top to bottom.
9. The hydraulic proportional valve according to claim 6, wherein: The number of the spoilers (11) is multiple and they are all evenly distributed along the circumferential direction of the guide post (10).
10. The hydraulic proportional valve according to claim 9, wherein: The spoiler (11) is spiral-shaped, and a flow-through gap (14) is reserved between two adjacent spoilers (11).