Safety valve capable of preventing mistaken disassembly

Abstract

The utility model relates to a safety valve capable of preventing mistaken disassembly, which comprises an upper valve body and a lower valve body, and is characterized in that the appearance structure of the upper valve body and the appearance structure of the lower valve body of the safety valve are designed to be a combination of a centrosymmetric structure and a non-centrosymmetric structure. According to the safety valve structure, the upper valve body and the lower valve body of the assembled valve body must be disassembled or fastened through special tools, mistaken disassembly between the upper valve body and the lower valve body caused by various factors in the using process can be effectively avoided, and stability of technical parameters of the safety valve is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically, a safety valve that can prevent accidental disassembly. Background Technology

[0002] A safety relief valve is an important device used to protect equipment and systems from excessive pressure. For example, common vehicle air supply systems have strict requirements for intake pressure; excessive pressure can cause irreversible damage to downstream systems. Generally, a stand-alone safety valve consists of upper and lower valve bodies and internal sensitive components. Manufacturers assemble these components according to requirements, then tighten the upper and lower valve bodies before final testing. After testing, users should not arbitrarily disassemble or adjust the valve without professional technical expertise, as this will seriously affect the safety valve's technical parameters. However, in practical applications, we have found that because safety valves often require the installation of pipelines and other components downstream, and because safety valves are often assembled structures (threaded fasteners), accidental disassembly between the upper and lower valve bodies is sometimes unavoidable. Simply retightening these parts after disassembly often has a significant impact on the safety valve's parameters. Therefore, a structure that prevents such accidental disassembly during use is needed to ensure the safety valve can properly perform its function of protecting equipment or systems. Loosening between the safety valve and the protected system or equipment can affect the safety of the protected system or equipment; therefore, a structure that prevents such complete disassembly of the safety valve during use is desired. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a safety valve that can prevent accidental disassembly.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A safety valve that can prevent accidental disassembly includes an upper valve body and a lower valve body, characterized in that the external structure of the upper valve body and the external structure of the lower valve body are designed as a combination of a centrally symmetrical structure and a non-centrally symmetrical structure.

[0006] A safety valve that can prevent accidental disassembly includes an upper valve body and a lower valve body. The upper valve body of the safety valve is designed with a centrally symmetrical structure, while the lower valve body is designed with a non-centrally symmetrical structure.

[0007] The upper valve body of the safety valve is designed with a regular hexagonal structure, while the lower valve body is designed with a regular heptagonal structure.

[0008] The upper valve body of the safety valve is designed with a non-centrally symmetrical external structure, while the lower valve body is designed with a centrally symmetrical external structure.

[0009] The upper valve body of the safety valve is designed as a regular hexagon, while the lower valve body is designed as a regular hexagon.

[0010] Detailed description: The upper valve body of the safety valve can be designed with a common centrally symmetrical structure (such as a regular hexagon), which can be clamped with conventional wrenches. The lower valve body, however, can be designed with a non-centrally symmetrical structure (such as a regular heptagon), requiring specialized tools for clamping. Alternatively, the upper valve body can be designed with a non-centrally symmetrical structure (such as a regular heptagon), while the lower valve body can be designed with a centrally symmetrical structure (such as a regular hexagon). The centrally symmetrical structure allows for compatibility with other components and modules, while the non-centrally symmetrical structure ensures that disassembly and tightening between the upper and lower valve bodies requires specialized tools.

[0011] Compared with the prior art, the positive effects of this utility model are:

[0012] The safety valve structure of this utility model can effectively avoid accidental disassembly between the upper and lower valve bodies due to various factors during use, thus ensuring the stability of the safety valve's technical parameters. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a safety valve structure where the lower valve body is a non-centrally symmetrical structure and the upper valve body is a centrally symmetrical structure.

[0014] Figure 2 for Figure 1 The diagram shows the orthographic projection of the safety valve structure to the right along the axis.

[0015] Figure 3 This is a schematic diagram of a safety valve structure where the lower valve body is centrally symmetrical and the upper valve body is non-centrally symmetrical.

[0016] Figure 4 for Figure 3 The diagram shows the orthographic projection of the safety valve structure to the right along the axis.

[0017] The labels in the attached diagram are as follows: 1 represents the lower valve body, 1.1 represents the external structure of the lower valve body, 2 represents the upper valve body, and 2.1 represents the external structure of the upper valve body. Detailed Implementation

[0018] The following provides a specific embodiment of a safety valve that can prevent accidental disassembly according to this utility model.

[0019] Example 1

[0020] like Figure 1 and Figure 2The safety valve, designed to prevent accidental disassembly, consists of two main parts: a lower valve body 1 and an upper valve body 2. The design torque between the upper valve body 2 and the lower valve body 1 is significantly greater than the connection torque between the safety valve and other devices. This ensures that the upper and lower valve bodies do not rotate during normal installation and use. The upper valve body's external structure 2.1 is designed as a common regular hexagon, which can be gripped with conventional wrenches. The lower valve body's external structure 1.1 is designed as a regular heptagon, which can only be disassembled or tightened with specialized tools. This effectively prevents accidental disassembly between the upper and lower valve bodies due to various factors during use, ensuring the stability of the safety valve's technical parameters.

[0021] Example 2

[0022] like Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the upper valve body is designed as a regular heptagon, while the lower valve body is designed as a regular hexagon. This can also effectively prevent accidental disassembly between the upper and lower valve bodies due to various factors during use, thus ensuring the stability of the safety valve's technical parameters.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the concept of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tamper-evident safety valve comprising an upper valve body and a lower valve body, characterized in that, The outer shape of the upper valve body of the safety valve is designed as a combination of a central symmetric structure and a non-central symmetric structure.

2. A safety valve according to claim 1, wherein The outer shape of the upper valve body of the safety valve is designed as a central symmetric structure, and the outer shape of the lower valve body is designed as a non-central symmetric structure.

3. A tamper-evident security valve as defined in claim 2, wherein The outer shape of the upper valve body of the safety valve is designed as a regular hexagonal structure, and the outer shape of the lower valve body is designed as a regular heptagonal structure.

4. A tamper-evident security valve as defined in claim 1, wherein The outer shape of the upper valve body of the safety valve is designed as a non-central symmetric structure, and the outer shape of the lower valve body is designed as a central symmetric structure.

5. A tamper-evident security valve as claimed in claim 4, wherein the valve body is formed from a plastics material. 5 The outer shape of the upper valve body of the safety valve is designed as a regular heptagonal structure, and the outer shape of the lower valve body is designed as a regular hexagonal structure.

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