Low-vibration valve element for hydraulic valve
By employing a multi-spring design and guiding structure, the sealing and stability issues of hydraulic valves in high-vibration environments are resolved, enabling stable movement of the valve core and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG SHENGHUA COAL MASCH CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-19
AI Technical Summary
In high-vibration environments, the single-spring valve core of existing hydraulic valves cannot guarantee the rebound force, resulting in poor sealing performance and unstable movement trajectory after long-term use.
The multi-spring design, including a main spring and a secondary spring, combined with a guide rod and a guide plate, provides stable rebound force and guidance, preventing deviation of the valve core movement trajectory, and uses rubber anti-vibration rings to reduce the impact of vibration.
In high-vibration environments, it maintains stable movement of the valve core and good sealing performance, extends service life, and avoids the decline in sealing performance caused by the aging of the single spring.
Smart Images
Figure CN224260977U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic valve technology, specifically to a low-vibration valve core for hydraulic valves. Background Technology
[0002] A search revealed a patent document, CN204756028U, which discloses "a durable hydraulic valve." This valve includes a valve body with a defined internal fluid passage extending along its axis, a valve core housed within the valve body, a spring within the valve core for abutting the valve core, and a retaining ring for limiting the spring's position. By providing a corrosion-resistant material layer and a corrosion-resistant block on the end face of the contact point between the valve core and the valve body, the valve core is protected from damage due to cavitation, thereby extending the service life of the check valve. Furthermore, by setting the contact surface between the valve core and the valve body as an arc-shaped surface, when the valve core is subjected to external impact or lateral force generated by the spring, this arc-shaped surface allows the valve core to gradually regain a good seal when it shifts.
[0003] The patented valve body and valve core have an arc-shaped contact surface, which can provide good sealing after the valve core rebounds. However, when used in a high-vibration environment, firstly, the single-spring design makes it difficult to guarantee the rebound force, and after long-term use, the spring will age and still easily cause the valve to not seal properly. Secondly, high vibration will also affect the movement trajectory of the valve core inside the valve body, making its movement unstable and thus affecting the sealing performance. To address these issues, we propose a low-vibration valve core for hydraulic valves. Utility Model Content
[0004] The purpose of this invention is to provide a low-vibration valve core for hydraulic valves to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-vibration valve core for a hydraulic valve, comprising a valve body, a valve core, and a stop seat. The stop seat is fixedly installed inside the valve body, and the valve core is movably connected inside the valve body and located on the right side of the stop seat. The outer surface of the valve core is in contact with the inner wall of the valve body. A main spring is installed between the valve core and the stop seat. Four guide plates are equidistantly mounted around the outer side of the valve core. A guide groove adapted to the guide plates is opened on the outer side of the valve body. A guide rod is fixedly connected between the left and right sides of the inner wall of the guide groove. The guide plate is slidably connected to the surface of the guide rod along the axial direction.
[0006] Furthermore, an annular shell is fixedly installed on the outer side of the valve body, and several auxiliary springs are equidistantly installed around the left side of the inner wall of the annular shell. The four guide plates are fixedly connected on the side away from the valve body through the annular plate. The design of multiple auxiliary springs can effectively prevent the main spring from aging due to long-term use and affecting the rebound of the valve core, so that the valve still has high rebound performance of the valve core after long-term use, thus extending its service life.
[0007] Furthermore, a connecting circular hole is provided on the left side of the annular plate, and the right end of the auxiliary spring is fixedly connected to the wall of the connecting circular hole. Multiple auxiliary springs arranged at equal intervals are connected to the annular plate to ensure that the valve core provides a stable and uniform rebound force when it moves horizontally to the left.
[0008] Furthermore, an anti-vibration ring is fixedly connected to the right side of the inner wall of the guide groove. The anti-vibration ring is specifically made of rubber. When the annular plate rebounds, the anti-vibration ring can prevent it from directly impacting the right side of the inner wall of the guide groove, causing large vibrations and affecting the service life of the valve core.
[0009] Furthermore, the left and right sides of the valve body are the valve outlet and inlet, respectively.
[0010] Furthermore, a sealing groove is provided on the surface of the valve core at the position corresponding to the water inlet, and a sealing ring is installed inside the sealing groove. The sealing groove and the sealing ring inside it can prevent liquid from seeping in through the gap between the valve body and the valve core.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] The stop seat of this utility model is fixed inside the valve body. The main spring provides the main rebound force for the valve core, and the auxiliary spring provides the auxiliary rebound force for the valve core. When the valve is used in a high-vibration environment, the guide rod and guide plate provide stable guidance for the valve core, preventing deviation in its movement trajectory and improving its stability during movement. This, in turn, facilitates the spring's push against the valve core, ensuring a sealing effect. This hydraulic valve uses a low-vibration valve core, has a reasonable structural design, and is easy to use. The multi-spring design effectively avoids the impact of aging on the rebound of valves with single springs, thus affecting the sealing performance. At the same time, in a high-vibration environment, it can effectively limit the movement trajectory of the valve core, ensuring its stability during movement and thus guaranteeing the valve's sealing performance, resulting in good performance. Attached Figure Description
[0013] Figure 1 This is a cross-sectional view of the structure of this utility model;
[0014] Figure 2 This utility model Figure 1 A magnified view of a section at point A in the middle;
[0015] Figure 3 This utility model Figure 1 Side view of the structural section at point AA;
[0016] Figure 4 This is a three-dimensional structural diagram of the valve core of this utility model.
[0017] In the diagram: 1 Valve body, 2 Valve core, 3 Stop seat, 4 Main spring, 5 Guide plate, 6 Guide groove, 7 Guide rod, 8 Annular shell, 9 Secondary spring, 10 Annular plate, 11 Anti-vibration ring, 12 Sealing groove, 13 Sealing ring. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figure 1-4 A low-vibration valve core for a hydraulic valve includes a valve body 1, a valve core 2, and a stop seat 3. The valve body 1 is specifically a hydraulic valve, and similarly, the valve core 2 is also a hydraulic valve core. The stop seat 3 is fixedly installed inside the valve body 1. The valve core 2 is movably connected inside the valve body 1 and located on the right side of the stop seat 3. The outer surface of the valve core 2 is in contact with the inner wall of the valve body 1. A main spring 4 is installed between the valve core 2 and the stop seat 3. Four guide plates 5 are equidistantly installed around the outer side of the valve core 2. A guide groove 6 adapted to the guide plate 5 is opened on the outer side of the valve body 1. A guide rod 7 is fixedly connected between the left and right sides of the inner wall of the guide groove 6. The guide plate 5 is slidably connected to the surface of the guide rod 7 along the axial direction.
[0020] Specifically, an annular shell 8 is fixedly installed on the outer side of the valve body 1. Several auxiliary springs 9 are equidistantly installed around the left side of the inner wall of the annular shell 8. The four guide plates 5 are fixedly connected on the side away from the valve body 1 through an annular plate 10. The design of multiple auxiliary springs 9 can effectively prevent the main spring 4 from aging due to long-term use and affecting the rebound of the valve core 2, so that the valve still has high rebound performance for the valve core 2 after long-term use, thus extending its service life.
[0021] Specifically, a connecting hole is provided on the left side of the annular plate 10, and the right end of the auxiliary spring 9 is fixedly connected to the wall of the connecting hole. Multiple auxiliary springs 9 arranged at equal intervals are connected to the annular plate 10 to ensure that the valve core 2 provides a stable and uniform rebound force when it moves horizontally to the left.
[0022] Specifically, an anti-vibration ring 11 is fixedly connected to the right side of the inner wall of the guide groove 6. The anti-vibration ring 11 is made of rubber. When the annular plate 10 rebounds, the anti-vibration ring 11 can prevent it from directly impacting the right side of the inner wall of the guide groove 6, causing large vibrations and affecting the service life of the valve core.
[0023] Specifically, the left and right sides of valve body 1 are the valve's outlet and inlet, respectively.
[0024] Specifically, a sealing groove 12 is provided on the surface of the valve core 2 at the position corresponding to the water inlet. A sealing ring 13 is installed inside the sealing groove 12. The sealing groove 12 and the sealing ring 13 inside it can prevent liquid from seeping in through the gap between the valve body 1 and the valve core 2.
[0025] This hydraulic valve uses a low-vibration valve core with a reasonable structural design and is easy to use. It adopts a multi-spring design, which can effectively avoid the loss of resilience due to aging of single-spring valves, thus affecting the sealing performance. At the same time, in high-vibration environments, it can effectively limit the movement trajectory of the valve core, ensuring its stability during movement, thereby ensuring the valve's sealing performance and providing good performance.
[0026] Working principle: The stop seat 3 is fixed inside the valve body 1. The main spring 4 provides the main rebound force for the valve core 2, and the auxiliary spring 9 provides the auxiliary rebound force for the valve core 2. When the valve is used in a high vibration environment, the guide rod 7 and the guide plate 5 provide stable guidance for the valve core 2, so that it will not have deviation in its movement trajectory, improve its stability during movement, and thus facilitate the spring to push the valve core 2 back, ensuring the sealing effect.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A low-vibration valve core for a hydraulic valve, comprising a valve body (1), a valve core (2), and a stop seat (3), characterized in that: The stop (3) is fixedly installed inside the valve body (1). The valve core (2) is movably connected inside the valve body (1) and located on the right side of the stop (3). The outer surface of the valve core (2) is in contact with the inner wall of the valve body (1). A main spring (4) is installed between the valve core (2) and the stop (3). Four guide plates (5) are equidistantly installed around the outer side of the valve core (2). A guide groove (6) adapted to the guide plate (5) is opened on the outer side of the valve body (1). A guide rod (7) is fixedly connected between the left and right sides of the inner wall of the guide groove (6). The guide plate (5) is slidably connected to the surface of the guide rod (7) along the axial direction.
2. The low-vibration valve core for hydraulic valves according to claim 1, characterized in that: An annular shell (8) is fixedly installed on the outer side of the valve body (1). Several springs (9) are equidistantly installed around the left side of the inner wall of the annular shell (8). The four guide plates (5) are fixedly connected to the side away from the valve body (1) through an annular plate (10).
3. The low-vibration valve core for hydraulic valves according to claim 2, characterized in that: The left side of the annular plate (10) is provided with a connecting circular hole, and the right end of the auxiliary spring (9) is fixedly connected to the wall of the connecting circular hole.
4. The low-vibration valve core for hydraulic valves according to claim 3, characterized in that: An anti-vibration ring (11) is fixedly connected to the right side of the inner wall of the guide groove (6), and the anti-vibration ring (11) is specifically a rubber ring.
5. The low-vibration valve core for hydraulic valves according to claim 4, characterized in that: The left and right sides of the valve body (1) are the valve outlet and inlet, respectively.
6. The low-vibration valve core for hydraulic valves according to claim 5, characterized in that: A sealing groove (12) is provided on the surface of the valve core (2) at the position corresponding to the water inlet, and a sealing ring (13) is installed inside the sealing groove (12).