High-purity one-way valve welding clamp

Abstract

The utility model discloses a high-purity one-way valve welding clamp which is provided with an air channel, and the air channel is used for filling inert gas. The high-purity one-way valve welding clamp comprises a first connecting part, a spring and a second connecting part. The second connecting part is provided with a through hole which is connected and communicated with the air channel. According to the high-purity one-way valve welding fixture, the second connecting part is used for pressing the elastic sheet in the high-purity one-way valve welding fixture to form sealing, and the gas channel is used for filling inert gas such as argon, so that the gas purity of a welding point is ensured, the subsequent welding quality of the welding point is ensured, bubbles are reduced, and the production efficiency is improved. The follow-up use performance and storage of the high-purity one-way valve welding clamp are guaranteed, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-purity one-way valve welding tooling, in particular to a high-purity one-way valve welding fixture. Background Art

[0002] With the rapid development of modern science and technology, the process requirements of chip technology and semiconductor industry are constantly improving, and the high-purity gas used in production is becoming more and more stringent. New requirements have also been put forward for the construction of front-end infrastructure such as gas pipelines. Pipeline check valves are used in the gas transportation process to ensure the one-way flow of gas and are widely used. However, the cleanliness of general check valves is difficult to meet the process requirements of high-purity gas use. Therefore, people invented high-purity check valves. In order to ensure quality, high-purity check valves need to be manufactured with higher processes, among which welding processing technology has the highest requirements. The existing processing uses tooling fixtures to directly fix and then use direct welding to process the joints. However, this method is prone to air impurities in the welds, resulting in bubbles in the welds, affecting the quality of the welds and the welding efficiency; it may also cause leakage during use, affecting the performance and life of the high-purity check valves. Utility Model Content

[0003] This utility model aims to solve the technical problems of low welding efficiency, high cost and poor quality of high-purity one-way valves in the existing technology by providing a high-purity one-way valve welding fixture in response to the current technical deficiencies.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0005] A high-purity one-way valve welding fixture is used for welding high-purity one-way valves. The high-purity one-way valve welding fixture is provided with an air channel, which is used for injecting inert gas; the high-purity one-way valve welding fixture includes a first connecting part and a second connecting part, the first connecting part is used for connecting and crimping an external air pipe, and the second connecting part is inserted into the high-purity one-way valve; a spring is provided between the first connecting part and the second connecting part.

[0006] As a further improvement, the air duct includes a first air duct and a second air duct, the first air duct is arranged in the first connecting part, and the second air duct is arranged in the second connecting part; the first air duct and the second air duct are both provided with an air inlet and an air outlet.

[0007] As a further improvement, the second connecting part includes a first sleeve and a second sleeve, the first sleeve is arranged at the end of the second sleeve; the second sleeve is provided with a connecting pipe, and the connecting pipe is inserted into the air outlet of the first air duct when connected; one end of the spring is connected to the second sleeve, and the other end of the spring is connected to the first connecting part.

[0008] As a further improvement, the second sleeve is provided with a through hole, and the through hole is connected to the second airway.

[0009] As a further improvement, a first locking portion and a second locking portion are provided on the outer side of the first connecting portion.

[0010] Compared with the prior art, the one or more technical solutions in the high-purity one-way valve welding fixture provided by the embodiment of the present invention have at least one of the following technical effects:

[0011] The utility model provides a second connection part for pressing the spring pieces in the high-purity one-way valve welding fixture to form a seal, and provides an airway for injecting inert gases such as argon, thereby ensuring the gas purity of the welding point, ensuring the subsequent welding quality of the welding point, reducing the generation of bubbles, ensuring the subsequent use performance and storage of the high-purity one-way valve welding fixture, and improving the welding efficiency; a spring is provided to provide elasticity, thereby ensuring the second connection part to compress the spring pieces in the high-purity one-way valve efficiently, ensuring the quality and efficiency of the subsequent gas injection; a through hole is provided for rapid and uniform gas output, thereby ensuring that the inner cavity of the high-purity one-way valve is quickly and evenly filled with gas, pushing out the gas at the welding point, and ensuring the quality of the subsequent welding processing of the high-purity one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0013] Figure 1 This is a schematic diagram of the overall structure of the high-purity one-way valve welding fixture of this embodiment;

[0014] Figure 2 This is a schematic diagram of the high-purity one-way valve welding fixture in use according to this embodiment. DETAILED DESCRIPTION

[0015] The following description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0016] For example, see the attached Figures 1 and 2A high-purity one-way valve welding fixture 1 is used for the welding processing of high-purity one-way valves. The high-purity one-way valve welding fixture 1 is provided with an air channel 2, and the air channel 2 is used for the injection of inert gas; the high-purity one-way valve welding fixture 1 includes a first connecting part 3 and a second connecting part 4, the first connecting part 3 is used for the connection and crimping operation of the external air pipe, and the second connecting part 4 is inserted into the high-purity one-way valve; a spring 5 is provided between the first connecting part 3 and the second connecting part 4, and the spring is fixedly connected between the first connecting part 3 and the second connecting part 4 by welding.

[0017] The air channel 2 includes a first air channel 20 and a second air channel 21. The first air channel 20 is arranged in the first connecting part 3, and the second air channel 21 is arranged in the second connecting part 4. The first air channel 20 and the second air channel 21 are both provided with an air inlet and an air outlet. The air channel 2 is used for gas infusion.

[0018] The second connecting part 4 includes a first sleeve 40 and a second sleeve 41, and the first sleeve 40 is arranged at the end of the second sleeve 41; the second sleeve 41 is provided with a connecting pipe 410, and the connecting pipe 410 is used to be inserted into the air outlet of the first airway 20 during connection; one end of the spring 5 is connected to the second sleeve 41, and the other end of the spring 5 is connected to the first connecting part 3. The spring 5 is used to provide elasticity, thereby ensuring the second connecting part 4 to compress the shrapnel in the high-purity one-way valve efficiently, thereby ensuring the quality and efficiency of the subsequent gas infusion.

[0019] The second sleeve 41 is provided with a through hole 411, which is connected to the second gas channel 21. The through hole 411 is used for rapid and uniform output of gas, thereby ensuring that the inner cavity of the high-purity one-way valve is quickly and evenly filled with gas, pushing out the gas at the welding point, and ensuring the quality of subsequent welding processing of the high-purity one-way valve.

[0020] A first locking portion 31 and a second locking portion 32 are provided on the outer side of the first connecting portion 3. The first locking portion 31 is used for locking connection with the structure of the external air pipe, and the second locking portion 32 is used for locking connection with the structure of the high-purity one-way valve.

[0021] The working principle of the present invention is as follows: the high-purity one-way valve welding fixture is connected to the external air pipe and the high-purity one-way valve, and the second connecting part presses the spring inside the high-purity one-way valve under the action of the spring, so that the inner cavity of the high-purity one-way valve is in a sealed state, and then gas is poured into the inner cavity so that the inner cavity is filled with argon gas to ensure the gas purity of the welding point, and then the welding point is welded. After welding is completed, the gas supply is turned off, and the high-purity one-way valve welding fixture 1 is disassembled to complete the welding process.

[0022] The utility model provides a second connection part for pressing the spring pieces in the high-purity one-way valve welding fixture to form a seal, and provides an airway for injecting inert gases such as argon, thereby ensuring the gas purity of the welding point, ensuring the subsequent welding quality of the welding point, reducing the generation of bubbles, ensuring the subsequent use performance and storage of the high-purity one-way valve welding fixture, and improving the welding efficiency; a spring is provided to provide elasticity, thereby ensuring the second connection part to compress the spring pieces in the high-purity one-way valve efficiently, ensuring the quality and efficiency of the subsequent gas injection; a through hole is provided for rapid and uniform gas output, thereby ensuring that the inner cavity of the high-purity one-way valve is quickly and evenly filled with gas, pushing out the gas at the welding point, and ensuring the quality of the subsequent welding processing of the high-purity one-way valve.

[0023] The present invention is not limited to the above-mentioned embodiments. Other welding fixtures for high-purity one-way valves obtained by using the same or similar structures or devices as the above-mentioned embodiments of the present invention are within the protection scope of the present invention.

Claims

1. A high-purity one-way valve welding fixture, which is used for welding high-purity one-way valves, characterized by: The high-purity one-way valve welding fixture is provided with an air channel, which is used for the injection of inert gas; the high-purity one-way valve welding fixture includes a first connecting part and a second connecting part, the first connecting part is used for connecting and crimping an external air pipe, and the second connecting part is inserted into the high-purity one-way valve; a spring is provided between the first connecting part and the second connecting part.

2. The high-purity one-way valve welding fixture according to claim 1 is characterized in that: The air duct includes a first air duct and a second air duct, the first air duct is arranged in the first connecting portion, and the second air duct is arranged in the second connecting portion; the first air duct and the second air duct are both provided with an air inlet and an air outlet.

3. The high-purity one-way valve welding fixture according to claim 2, characterized in that: The second connecting part includes a first sleeve and a second sleeve, the first sleeve is arranged at the end of the second sleeve; the second sleeve is provided with a connecting pipe, and the connecting pipe is inserted into the air outlet of the first air duct when connected; one end of the spring is connected to the second sleeve, and the other end of the spring is connected to the first connecting part.

4. The high-purity one-way valve welding fixture according to claim 3 is characterized in that: The second sleeve is provided with a through hole, and the through hole is connected to the second airway.

5. The high-purity one-way valve welding fixture according to claim 4 is characterized in that: A first locking portion and a second locking portion are provided on the outer side of the first connecting portion.

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