Manual pressure release valve assembly

Abstract

The utility model relates to the technical field of valves, in particular to a manual pressure release valve assembly. The tail end of the front cover is sleeved with the valve body, the valve element is sleeved with the front portion of the front cover, the valve rod is sleeved with the tail end of the valve body, the front end of the valve rod is sleeved with the front cover, a deep hole is formed in the front end of the valve element, a liquid drainage hole is formed in the tail end of the deep hole, and a first sealing ring and a second sealing ring are arranged on the valve element. The liquid drainage hole is formed between the first sealing ring and the second sealing ring, a spring is arranged between the tail end of the front cover and the valve rod, and an extension area is arranged at the tail end of the front cover. According to the pressure release valve, the second sealing ring is additionally arranged on the valve element, a double-sealing and liquid drainage mechanism is constructed, and the sealing reliability of the pressure release valve is improved. The extension area at the tail end of the front cover limits the moving stroke of the valve rod, the leakage problem caused by the fact that the stroke of the valve rod is too large due to misoperation is avoided, and the pressure release valve works more stably and reliably.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a manual pressure relief valve assembly. Background Technology

[0002] In practical applications of existing manual pressure relief valves, numerous problems affect their performance and reliability. Firstly, the valve core's sealing structure is inadequate, consisting of only a single sealing ring. During prolonged use, liquid can easily seep through the sealing ring, leading to leakage at the valve stem. This not only wastes fluid but may also damage the surrounding environment and equipment. In some hydraulic systems, leaked liquid can contaminate the work area, affect the normal operation of equipment, and even pose safety hazards.

[0003] Secondly, the valve stem stroke lacks effective fixing measures. When the operator applies excessive force, the first sealing ring may extend beyond the oil hole, causing oil to be carried to the valve stem and further exacerbating the leakage problem. In some systems with high pressure control precision requirements, such as precision hydraulic transmission devices, this can seriously affect the system's stability and accuracy.

[0004] Furthermore, impurities in the oil circuit are a significant problem. Due to the lack of an effective filtration system, impurities can easily enter the area between the front cover and the valve core through the oil holes, jamming the valve core and preventing it from sealing properly. This disrupts the system's pressure balance and reduces its efficiency. For example, in industrial lubrication systems, the intrusion of impurities can accelerate wear on equipment components and shorten the equipment's lifespan.

[0005] In summary, existing manual pressure relief valves have significant shortcomings in sealing performance, valve stem stroke control, and impurity protection, and an innovative design is urgently needed to solve these problems. Utility Model Content

[0006] The purpose of this invention is to overcome the above-mentioned problems and provide a manual pressure relief valve assembly. To achieve the above objective, this invention adopts the following technical solution:

[0007] A manual pressure relief valve assembly includes a valve body, a front cover, a valve core, and a valve stem. The end of the front cover is sleeved inside the valve body, the valve core is sleeved at the front of the front cover, the valve stem is sleeved at the end of the valve body, and the front end of the valve stem is sleeved inside the front cover. The front end of the valve core has a deep hole, and the end of the deep hole has a drain hole. The valve core has a first sealing ring and a second sealing ring. The drain hole is located between the first sealing ring and the second sealing ring. A spring is provided between the end of the front cover and the valve stem. The end of the front cover has an extension area.

[0008] As an improvement, the front cover is provided with an oil hole, and a circular filter screen is fitted onto the front cover, the circular filter screen covering the oil hole.

[0009] As an improvement, a third sealing ring is provided on the valve body, and a fourth sealing ring is provided between the valve body and the front cover.

[0010] As an improvement, the front end of the front cover is provided with a fifth sealing ring and a support piece, and the fifth sealing ring is fixed to the front cover by the support piece.

[0011] The advantages of this utility model are:

[0012] 1. This utility model constructs a double sealing and liquid diversion mechanism by adding a second sealing ring, a deep hole and a drain hole to the valve core, which effectively prevents liquid leakage to the valve stem and improves the sealing reliability of the pressure relief valve.

[0013] 2. The extended area at the end of the front cover of this utility model limits the active stroke of the valve stem, avoiding leakage problems caused by excessive valve stem stroke due to improper operation, and making the operation of the pressure relief valve more stable and reliable.

[0014] 3. The circular filter screen of this utility model can effectively filter impurities in the oil circuit, prevent impurities from interfering with the normal sealing of the valve core, reduce the possibility of leakage in the pressure relief valve, extend the service life of the pressure relief valve, and ensure the normal operation of the fluid system. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a manual pressure relief valve assembly in Example 1.

[0016] Figure 2 This is a structural diagram of the valve core in Example 1.

[0017] Figure 3 This is a structural diagram of the valve core in the prior art.

[0018] Figure 4 This is a structural diagram of the front cover in Example 1.

[0019] Figure 5 This is a structural diagram of the front cover in the prior art.

[0020] The diagram is labeled as follows:

[0021] 1. Valve body; 2. Front cover; 3. Valve core; 4. Valve stem; 5. Deep hole; 6. Drain hole; 7. First sealing ring; 8. Second sealing ring; 9. Spring; 10. Extension area; 11. Circular filter screen; 12. Third sealing ring; 13. Fourth sealing ring; 14. Fifth sealing ring; 15. Support plate; 16. Oil hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0026] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0027] The present invention will be described in detail below through specific embodiments to enable a better understanding of the present invention. However, the following embodiments do not limit the scope of protection of the present invention.

[0028] Example 1

[0029] This embodiment discloses a manual pressure relief valve assembly.

[0030] like Figures 1 to 5As shown, this embodiment includes a valve body 1, a front cover 2, a valve core 3, and a valve stem 4. The end of the front cover 2 is fitted inside the valve body 1, the valve core 3 is fitted at the front of the front cover 2, the valve stem 4 is fitted at the end of the valve body 1, and the front end of the valve stem 4 is fitted inside the front cover 2. The front end of the valve core 3 is provided with a deep hole 5, and the end of the deep hole 5 is provided with a drain hole 6. The valve core 3 is provided with a first sealing ring 7 and a second sealing ring 8. The drain hole 6 is located between the first sealing ring 7 and the second sealing ring 8. A spring 9 is provided between the end of the front cover 2 and the valve stem 4, and the end of the front cover 2 is provided with an extension area 10.

[0031] The front cover 2 is fitted into the valve body 1 at its end, forming a tight connection structure to ensure that fluid will not leak from the connection point. The valve core 3 is fitted into the front part of the front cover 2, and the valve stem 4 is fitted into the end of the valve body 1, with the front end of the valve stem 4 fitted into the front cover 2. All components cooperate with each other to achieve the function of a pressure relief valve.

[0032] The valve core 3 has a deep hole 5 at its front end and a drain hole 6 at its rear end. The valve core 3 has a first sealing ring 7 and a second sealing ring 8, with the drain hole 6 positioned between the first sealing ring 7 and the second sealing ring 8. This design ensures that when liquid seeps through the second sealing ring 8, it drains through the drain hole 6 and the deep hole 5, effectively preventing further seepage through the first sealing ring 7 and thus preventing leakage at the valve stem 4.

[0033] The front cover 2 has an extension area 10 at its end, which limits the travel of the valve stem 4 and keeps it fixed. In this way, when the operator applies force, the travel of the valve stem 4 will not exceed the predetermined range, thus preventing the first sealing ring 7 from exceeding the oil hole 16 due to excessive travel of the valve stem 4, and preventing oil from being carried to the oil stem and causing leakage.

[0034] The front cover 2 is provided with an oil hole 16, and a circular filter screen 11 is fitted on the front cover 2, covering the oil hole 16.

[0035] The front cover 2 is provided with an oil hole 16, and a circular filter screen 11 is fitted onto the front cover 2, covering the oil hole 16. Before the fluid enters the area between the front cover 2 and the valve core 3, the circular filter screen 11 can filter out impurities in the oil circuit, preventing impurities from entering the area and jamming the valve core 3, ensuring that the valve core 3 can seal properly, and avoiding leakage from the pressure relief valve.

[0036] A third sealing ring 12 is provided on the valve body 1, and a fourth sealing ring 13 is provided between the valve body 1 and the front cover 2.

[0037] The front cover 2 has a fifth sealing ring 14 and a support piece 15 at its front end. The fifth sealing ring 14 is fixed to the front cover 2 by the support piece 15.

[0038] To further improve the overall sealing performance, a third sealing ring 12 is provided on the valve body 1, and a fourth sealing ring 13 is provided between the valve body 1 and the front cover 2, effectively preventing fluid leakage from the connection between the valve body 1 and the front cover 2. In addition, a fifth sealing ring 14 and a support plate 15 are provided at the front end of the front cover 2. The fifth sealing ring 14 is fixed to the front cover 2 by the support plate 15, which enhances the sealing effect between the front end of the front cover 2 and the valve core 3.

[0039] The specific embodiments of this utility model have been described in detail above, but they are merely examples, and this utility model is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model should be covered within the scope of this utility model.

Claims

1. A manual pressure relief valve assembly, characterized by, The utility model relates to a valve, including valve body (1), front cover (2), valve core (3), valve rod (4), the front cover (2) end sleeve is connected in valve body (1), the valve core (3) sleeve is connected in front cover (2) front part, the valve rod (4) sleeve is connected in valve body (1) end, the valve rod (4) front end sleeve is connected in front cover (2), the valve core (3) front end is equipped with deep hole (5), the deep hole (5) end is equipped with drainage hole (6), the valve core (3) is equipped with first sealing ring (7), second sealing ring (8), the drainage hole (6) is arranged between first sealing ring (7) with second sealing ring (8), the front cover (2) end with valve rod (4) between being equipped with spring (9), the front cover (2) end is equipped with extension area (10).

2. A manual pressure relief valve assembly according to claim 1, wherein, The front cover (2) is equipped with oil hole (16), the front cover (2) is equipped with circular ring filter screen (11), and the circular ring filter screen (11) covers the oil hole (16).

3. A manual pressure relief valve assembly according to claim 2, wherein, The valve body (1) is equipped with third sealing ring (12), and the fourth sealing ring (13) is arranged between the valve body (1) and the front cover (2).

4. A manual pressure relief valve assembly according to claim 3, wherein, The front cover (2) is equipped with fifth sealing ring (14) and support sheet (15), and the fifth sealing ring (14) is fixed on the front cover (2) through the support sheet (15).

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