A shuttle valve for reversing process without oil leakage

Abstract

This utility model relates to the field of hydraulic technology, specifically to a shuttle valve for a reversing process without oil leakage. It includes a threaded plug, a valve sleeve one, and a valve sleeve two connected in sequence. A high-pressure oil port one is located on the top of the valve sleeve one. An oil outlet one, an oil outlet two, and a high-pressure oil port two are sequentially opened on the valve sleeve two. A valve core module is slidably installed inside the valve sleeve two. A spring connected to the valve core module is installed inside the valve sleeve one. The sliding of the valve core module changes the working position, alternately blocking and opening oil outlet one and oil outlet two. This achieves oil circuit replacement while preventing oil leakage, thereby ensuring the stability of equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic technology, specifically to a shuttle valve that prevents oil leakage during the reversing process. Background Technology

[0002] In traditional hydraulic systems, shuttle valves are typically used to switch between two fluids. During the switching process, the two fluids may cross-contaminate. For the same medium, cross-contamination during switching will not affect product functionality. However, for two different media, cross-contamination must be prevented to avoid medium deterioration. For the same medium using different tanks, if cross-contamination occurs during switching or if fluid from one tank flows into another, one tank may burst, causing product malfunction or even a safety accident. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a shuttle valve that prevents oil leakage during the reversing process, thus ensuring stable equipment operation.

[0004] To achieve the above objectives, this utility model embodiment adopts the following technical solution: a shuttle valve for reversing process without oil leakage, comprising a threaded plug, a valve sleeve one, and a valve sleeve two connected in sequence. A high-pressure oil port one is provided on the top of the valve sleeve one, and an oil outlet one, an oil outlet two, and a high-pressure oil port two are provided in sequence on the valve sleeve two. A valve core module is slidably disposed inside the valve sleeve two, and a spring connected to the valve core module is disposed inside the valve sleeve one.

[0005] As a further improvement to the above technical solution:

[0006] The valve core module includes a sealing seat for sealing oil outlet one or oil outlet two. A steel ball is provided at one end of the sealing seat facing the spring, and a sealing post is provided at the other end.

[0007] The sealing seat is provided with a storage cavity for placing the steel ball, and the end of the sealing column is provided with a sealing bevel.

[0008] The threaded plug has a base for mounting the spring, and the base has a positioning pin that passes through the spring.

[0009] The spring is provided with a guide cylinder on its outside. One end of the guide cylinder is connected to the valve core module, and the other end extends into the inside of the threaded plug.

[0010] Sealing rings are provided on the outer walls of the threaded plug, valve sleeve one, and valve sleeve two.

[0011] The beneficial effects of this utility model embodiment are as follows: the switching process has no oil leakage shuttle valve, which includes a threaded plug, valve sleeve one and valve sleeve two connected in sequence. A high-pressure oil port one is provided on the top of valve sleeve one, and an oil outlet one, an oil outlet two and a high-pressure oil port two are opened in sequence on valve sleeve two. A valve core module is slidably installed in valve sleeve two, and a spring connected to the valve core module is installed in valve sleeve one. The working position is changed by sliding the valve core module, and oil outlet one and oil outlet two are alternately blocked and opened, so as to realize the oil circuit replacement while avoiding the occurrence of oil leakage, thereby ensuring the stability of equipment operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Figure 3 This is a schematic diagram of the valve core module in this utility model.

[0015] In the diagram: 1. Threaded plug; 2. Valve sleeve one; 3. Valve sleeve two; 4. High-pressure oil port one; 5. Oil outlet one; 6. Oil outlet two; 7. High-pressure oil port two; 8. Spring; 9. Sealing seat; 10. Steel ball; 11. Sealing column; 12. Storage cavity; 13. Sealing bevel; 14. Base; 15. Positioning column; 16. Guide cylinder; 17. Sealing ring. Detailed Implementation

[0016] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0017] like Figure 1-2 As shown, the oil-free shuttle valve for the reversing process in this embodiment includes a threaded plug 1, valve sleeve 1 2, and valve sleeve 2 3 connected in sequence. A high-pressure oil port 4 is provided on the top of valve sleeve 1 2. An oil outlet 5, an oil outlet 6, and a high-pressure oil port 7 are sequentially opened on valve sleeve 2 3. A valve core module is slidably installed inside valve sleeve 2 3. A spring 8 connected to the valve core module is installed inside valve sleeve 1 2. The working position is changed by sliding the valve core module, and oil outlet 5 and oil outlet 6 are alternately blocked and opened. This achieves oil circuit replacement while preventing oil leakage, thereby ensuring the stability of equipment operation.

[0018] The valve core module includes a sealing seat 9 for sealing oil outlet 5 or oil outlet 6. A steel ball 10 is provided at one end of the sealing seat 9 facing the spring 8. A storage cavity 12 is provided on the sealing seat 9 for placing the steel ball 10. Placing the steel ball 10 in the storage cavity 12 does not affect its rotation. A sealing post 11 is provided at the other end. A sealing bevel 13 is provided at the end of the sealing post 11.

[0019] The threaded plug 1 has a base 14 for mounting the spring 8. The base 14 has a positioning post 15 that passes through the spring 8 to prevent the spring 8 from deflecting at the stress point. The outside of the spring 8 is provided with a guide cylinder 16. The outer side wall of the guide cylinder 16 fits against the inner side wall of the valve sleeve 2. One end of the guide cylinder 16 is connected to the valve core module, and the other end extends into the inside of the threaded plug 1. The end of the guide cylinder 16 overlaps with the positioning post 14. The cooperation of the two can enhance the guidance and positioning of the spring 8 and enhance the stability of the spring 8 operation.

[0020] The outer walls of threaded plug 1, valve sleeve 1 2 and valve sleeve 2 3 are all provided with sealing rings 17. The sealing rings 17 can prevent oil leakage between high pressure port 1 4 and high pressure port 2 7 when oil leaks out.

[0021] The working principle / assembly process of this solution is as follows: When the high pressure port 4 is under high pressure, the high pressure port 7 is connected to the return oil system, the valve core module moves to the right, and at this time the oil outlet 5 opens and connects with the high pressure port 4.

[0022] When high pressure port 27 is at high pressure, high pressure port 14 is connected to the return oil system, and the valve core module moves to the left. At this time, oil outlet 15 is closed, and oil outlet 26 is opened to connect with high pressure port 27. During the oil circuit reversal process, only one of oil outlet 15 and oil outlet 26 is open, and the other is closed to avoid oil leakage.

[0023] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0026] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this 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 this utility model.

Claims

1. A shuttle valve for reversing without oil leakage, comprising a threaded plug (1), a valve sleeve one (2), and a valve sleeve two (3) connected in sequence, wherein a high-pressure oil port one (4) is provided above the valve sleeve one (2), and an oil outlet one (5), an oil outlet two (6), and a high-pressure oil port two (7) are provided in sequence on the valve sleeve two (3), characterized in that: A valve core module is slidably installed inside the valve sleeve 2 (3), and a spring (8) connected to the valve core module is installed inside the valve sleeve 1 (2).

2. The non-slip shuttle valve for the reversing process according to claim 1, characterized in that: The valve core module includes a sealing seat (9) for sealing the oil outlet one (5) or the oil outlet two (6). The sealing seat (9) has a steel ball (10) at one end facing the spring (8) and a sealing post (11) at the other end.

3. The non-slip shuttle valve for the reversing process according to claim 2, characterized in that: The sealing seat (9) is provided with a storage cavity (12) for placing the steel ball (10), and the end of the sealing column (11) is provided with a sealing slope (13).

4. The switching process oil-free shuttle valve according to any one of claims 1-3, characterized in that: The threaded plug (1) is provided with a base (14) for installing the spring (8), and a positioning post (15) is provided on the base (14) and inserted into the spring (8).

5. The non-slip shuttle valve for the reversing process according to claim 4, characterized in that: The spring (8) is provided with a guide cylinder (16) on its outside. One end of the guide cylinder (16) is connected to the valve core module, and the other end extends into the interior of the threaded plug (1).

6. The switching process oil-free shuttle valve according to any one of claims 1-3, characterized in that: A sealing ring (17) is provided on the outer wall of the threaded plug (1), valve sleeve one (2) and valve sleeve two (3).

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