Hydraulic valve element, valve element assembly and fluid control assembly

Abstract

The utility model belongs to the technical field of hydraulic valves, and discloses a hydraulic valve element, a valve element assembly and a fluid control assembly. The hydraulic valve element comprises a valve element body, at least two pressure equalizing grooves are formed in the outer wall of the valve element body at intervals in the axial direction of the valve element body, each pressure equalizing groove is annularly formed in the outer wall of the valve element body in the circumferential direction of the valve element body, the pressure equalizing grooves can effectively disperse oil pressure, friction force and clamping force between the valve element body and a valve sleeve are reduced, and the service life of the valve element body is prolonged. According to the hydraulic valve element, the movement resistance of the valve element body is reduced, the response speed of the hydraulic valve is increased, the adjacent pressure equalizing grooves are communicated through the flow guide grooves, oil can smoothly flow between the pressure equalizing grooves, oil disorder and pressure fluctuation are reduced, and the movement stability and reliability of the valve element body are improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve technology, and in particular to hydraulic valve cores, valve core assemblies, and fluid control assemblies. Background Technology

[0002] Pressure valves are crucial components in hydraulic systems, used to regulate the pressure or flow of hydraulic oil for precise control. Common pressure valves, while pursuing higher pressure gain, often suffer from reduced stability, making them prone to self-excited oscillations (vibration noise). Furthermore, the friction and clamping force between the valve core and valve sleeve significantly affect the valve's response speed, and in severe cases, can lead to valve core jamming and safety accidents.

[0003] To suppress the above phenomena, damping orifices or throttling grooves are usually set to increase the stability of the hydraulic system. Designing damping orifices on the valve core or valve body can reduce the rate of pressure change, thereby suppressing oscillations. However, the presence of damping orifices will reduce the response speed and control accuracy of the pressure valve. Throttling grooves can smooth the flow fluctuations of hydraulic oil and improve the stability of the system, but throttling grooves will cause a certain pressure loss, affecting the energy efficiency of the hydraulic system.

[0004] Therefore, there is an urgent need for a hydraulic valve core, valve core assembly, and fluid control assembly to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic valve core that improves the stability and reliability of the valve core body's movement.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A hydraulic valve core includes a valve core body. At least two pressure equalizing grooves are provided on the outer wall of the valve core body along the axial direction of the valve core body. Each pressure equalizing groove is arranged circumferentially on the outer wall of the valve core body. Adjacent pressure equalizing grooves are connected through at least one guide groove.

[0008] Optionally, two adjacent equalizing grooves are connected by a plurality of flow guide grooves, which are evenly distributed along the circumference of the valve core body on the outer wall of the valve core body.

[0009] Optionally, the opening direction of the guide groove is at a preset angle α with the axial direction of the valve core body, wherein 0°≤α<90°.

[0010] Optionally, the depth of the flow guide groove is less than or equal to the depth of the pressure equalization groove.

[0011] Optionally, the cross-section of the equalizing groove is one of a rectangle, a trapezoid, or a semicircle.

[0012] Optionally, 2 to 10 pressure equalization grooves are provided along the axial direction of the valve core body, and each pressure equalization groove has the same depth.

[0013] Optionally, the width ratio of the equalizing groove to the flow guiding groove is 1.5:1 to 3:1.

[0014] Optionally, the distance between two adjacent pressure equalizing grooves along the axial direction of the valve core body is 2mm-15mm, and the distance between two adjacent flow guide grooves along the circumferential direction of the valve core body is 2mm-10mm.

[0015] The purpose of this invention is to provide a valve core assembly that improves the reliability and stability of the valve core assembly.

[0016] To achieve this objective, the present invention adopts the following technical solution:

[0017] The valve core assembly includes a valve sleeve and the aforementioned hydraulic valve core. The valve sleeve has a fluid channel, and the hydraulic valve core is slidably disposed within the fluid channel.

[0018] The purpose of this invention is to provide a fluid control component that improves the stability of fluid systems.

[0019] To achieve this objective, the present invention adopts the following technical solution:

[0020] A fluid control assembly includes a valve body and the aforementioned valve core assembly, wherein the valve body is provided with an assembly groove, and the valve core assembly is inserted into the assembly groove.

[0021] Beneficial effects:

[0022] The hydraulic valve core provided by this utility model includes a valve core body. At least two pressure equalizing grooves are provided on the outer wall of the valve core body along the axial direction of the valve core body. Each pressure equalizing groove is arranged circumferentially on the outer wall of the valve core body. The pressure equalizing grooves can effectively disperse the oil pressure, reduce the friction and clamping force between the valve core body and the valve sleeve, reduce the movement resistance of the valve core body, and improve the response speed of the hydraulic valve. Furthermore, adjacent pressure equalizing grooves are connected by a guide groove, which allows the oil to flow smoothly between the pressure equalizing grooves, reduces oil turbulence and pressure fluctuations, and improves the stability and reliability of the valve core body movement.

[0023] The valve core assembly provided by this utility model includes a valve sleeve and the aforementioned hydraulic valve core. The valve sleeve has a fluid channel, and the hydraulic valve core is slidably disposed in the fluid channel. The valve core assembly can accurately adjust the flow path of the fluid, ensuring that the direction and flow rate of the fluid are precisely controlled, thereby improving the reliability and stability of the valve core assembly.

[0024] The fluid control component provided by this utility model includes a valve body and the aforementioned valve core assembly. The valve body is provided with an assembly groove, and the valve core assembly is inserted into the assembly groove. By applying the aforementioned valve core assembly, the flow path of oil in the valve body can be optimized, the pressure distribution can be improved, the problem of excessive or insufficient local pressure can be avoided, and the stability of the fluid system can be improved. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the hydraulic valve core provided by this utility model;

[0026] Figure 2 This is a partial cross-sectional view of the valve core assembly provided by this utility model from a first-view perspective;

[0027] Figure 3 This is a partial cross-sectional view of the valve core assembly provided by this utility model from a second perspective.

[0028] In the picture:

[0029] 100. Valve core body; 110. Pressure equalizing groove; 120. Flow guide groove;

[0030] 200, Valve sleeve; 210, Fluid passage. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] This embodiment provides a hydraulic valve core, such as... Figure 1 As shown, the hydraulic valve core includes a valve core body 100. At least two pressure equalizing grooves 110 are provided on the outer wall of the valve core body 100 along the axial direction of the valve core body 100. Each pressure equalizing groove 110 is arranged circumferentially on the outer wall of the valve core body 100. The pressure equalizing grooves 110 can effectively disperse the oil pressure, reduce the friction and clamping force between the valve core body 100 and the valve sleeve 200, reduce the movement resistance of the valve core body 100, and improve the response speed of the hydraulic valve. Furthermore, adjacent pressure equalizing grooves 110 are connected through a guide groove 120, which allows the oil to flow smoothly between the pressure equalizing grooves 110, reduces oil turbulence and pressure fluctuations, and improves the stability and reliability of the movement of the valve core body 100.

[0036] Optionally, such as Figure 1 and Figure 2 As shown, two adjacent pressure equalizing grooves 110 are connected by multiple guide grooves 120. The multiple guide grooves 120 are evenly distributed along the circumference of the valve core body 100 on the outer wall of the valve core body 100, so that the oil forms a uniform pressure distribution on the surface of the valve core body 100, which reduces the friction and clamping force between the valve core body 100 and the valve sleeve 200, reduces the resistance when the valve core body 100 moves, and further improves the stability and accuracy of the movement of the valve core body 100.

[0037] In this embodiment, the outer wall of the valve core body 100 is provided with three pressure equalization grooves 110. The three pressure equalization grooves 110 are arranged at intervals along the axial direction of the valve core body 100 on the outer wall of the valve core body 100. Two adjacent pressure equalization grooves 110 are connected by seven guide grooves 120, which improves the uniformity of pressure distribution, makes the oil flow more smoothly between the pressure equalization grooves 110, reduces the interference of fluid flow fluctuation and uneven pressure on the valve core, and improves the dynamic response capability of the valve core body 100 during operation.

[0038] Optionally, the opening direction of the guide groove 120 forms a preset angle α with the axial direction of the valve core body 100, wherein 0°≤α<90°. In this embodiment, the guide groove 120 and the axial direction of the valve core body 100 are the same, that is, the preset angle α=0°, so that the liquid flow can quickly pass through the guide groove 120 along the axial direction, with minimal resistance, maximum flow efficiency, and reduced energy loss of hydraulic oil in the flow channel.

[0039] In other embodiments, the guide channel 120 and the valve core body 100 have a preset angle α in the axial direction. The preset angle α can be 15°, 30°, 45°, 60°, or 75°. By guiding the liquid flow through the inclined guide channel 120, the hydraulic oil can be smoothly transitioned between the pressure equalization channels 110, further balancing the pressure distribution.

[0040] Optionally, the depth of the flow guide groove 120 is less than or equal to the depth of the pressure equalization groove 110, which helps the liquid flow to be more stable when passing through the valve core body 100 and avoids excessive interference with the pressure equalization performance of the pressure equalization groove 110.

[0041] Optionally, the cross-section of the pressure equalizing groove 110 is rectangular, trapezoidal, or semi-circular. A rectangular cross-section of the pressure equalizing groove 110 is easy to process, suitable for mass production, and helps reduce production costs. A trapezoidal cross-section of the pressure equalizing groove 110 can better distribute fluid, thereby effectively suppressing fluid flow impact and turbulence, and improving the stability of the valve core body 100. A semi-circular cross-section of the pressure equalizing groove 110 provides a smooth fluid channel 210, which can effectively reduce oil resistance, reduce energy loss, and improve flow efficiency.

[0042] Optionally, 2 to 10 pressure equalization grooves 110 are provided along the axial direction of the valve core body 100. Specifically, there can be 2, 3, 4, 5, 6, 7, 8, 9, or 10 pressure equalization grooves. The depth of each pressure equalization groove 110 is equal, so that the pressure equalization effect is better reflected, avoiding local pressure that is too high or too low, and avoiding valve core body 100 jamming or instability caused by uneven pressure, thereby improving the stability of valve core body 100 movement.

[0043] Optionally, the width ratio of the equalizing groove 110 to the guide groove 120 is 1.5:1 to 3:1, where the width of the equalizing groove 110 refers to the width of the equalizing groove 110 along the axial direction of the valve core body 100, and the width of the guide groove 120 refers to the width of the guide groove 120 along the circumferential direction of the valve core body 100. Specifically, the width ratio of the equalizing groove 110 to the guide groove 120 can be 1.5:1, 2:1, 3:1, etc. A reasonable distribution of the width ratio of the equalizing groove 110 and the guide groove 120 can effectively reduce the disturbance and turbulence of the liquid flow, reduce the friction between the valve core body 100 and the valve body, reduce the wear rate, and improve the durability of the valve core body 100.

[0044] Optionally, the distance between two adjacent pressure equalizing grooves 110 along the axial direction of the valve core body 100 is 2mm-15mm, specifically 2mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, or 15mm. The distance between two adjacent guide grooves 120 along the circumferential direction of the valve core body 100 is 2mm-10mm, specifically 2mm, 4mm, 6mm, 8mm, or 10mm. A reasonable distance between the pressure equalizing grooves 110 and the guide grooves 120 can effectively reduce the frictional resistance of the fluid flow and reduce the resistance when the fluid flows through the valve core, thereby reducing pressure loss and improving the energy efficiency of the hydraulic system.

[0045] like Figure 2 and Figure 3 As shown, this embodiment also provides a valve core assembly, including a valve sleeve 200 and the aforementioned hydraulic valve core. The valve sleeve 200 is provided with a fluid channel 210, and the hydraulic valve core is slidably disposed in the fluid channel 210. The valve core assembly can accurately adjust the flow path of the fluid, ensuring that the direction and flow rate of the fluid are precisely controlled, thereby improving the reliability and stability of the valve core assembly.

[0046] This embodiment also provides a fluid control component, including a valve body and the aforementioned valve core assembly. The valve body is provided with an assembly groove, and the valve core assembly is inserted into the assembly groove. By applying the aforementioned valve core assembly, the flow path of the oil in the valve body can be optimized, the pressure distribution can be improved, the problem of excessive or insufficient local pressure can be avoided, and the stability of the fluid system can be improved.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A hydraulic valve core, characterized in that, The device includes a valve core body (100), and the outer wall of the valve core body (100) is provided with at least two pressure equalizing grooves (110) spaced apart along the axial direction of the valve core body (100). Each pressure equalizing groove (110) is arranged circumferentially around the outer wall of the valve core body (100), and two adjacent pressure equalizing grooves (110) are connected by at least one guide groove (120).

2. The hydraulic valve core according to claim 1, characterized in that, Two adjacent equalizing grooves (110) are connected by a plurality of flow guide grooves (120), and the plurality of flow guide grooves (120) are evenly distributed on the outer wall of the valve core body (100) along the circumference of the valve core body (100).

3. The hydraulic valve core according to claim 1, characterized in that, The opening direction of the guide groove (120) is at a preset angle α with the axial direction of the valve core body (100), wherein 0°≤α<90°.

4. The hydraulic valve core according to claim 1, characterized in that, The depth of the flow guide groove (120) is less than or equal to the depth of the equalizing groove (110).

5. The hydraulic valve core according to claim 1, characterized in that, The cross-section of the equalizing groove (110) is one of rectangle, trapezoid, or semicircle.

6. The hydraulic valve core according to any one of claims 1-5, characterized in that, Two to ten equalizing grooves (110) are provided along the axial direction of the valve core body (100), and each equalizing groove (110) has the same depth.

7. The hydraulic valve core according to any one of claims 1-5, characterized in that, The width ratio of the equalizing groove (110) to the flow guiding groove (120) is 1.5:1 to 3:

1.

8. The hydraulic valve core according to any one of claims 1-5, characterized in that, The distance between two adjacent pressure equalizing grooves (110) along the axial direction of the valve core body (100) is 2mm-15mm, and the distance between two adjacent flow guide grooves (120) along the circumferential direction of the valve core body (100) is 2mm-10mm.

9. A valve core assembly, characterized in that, The device includes a valve sleeve (200) and a hydraulic valve core as described in any one of claims 1-8, wherein the valve sleeve (200) is provided with a fluid channel (210) and the hydraulic valve core is slidably disposed within the fluid channel (210).

10. A fluid control assembly, characterized in that, The device includes a valve body and the valve core assembly as described in claim 9, wherein the valve body is provided with an assembly groove and the valve core assembly is inserted into the assembly groove.

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