Valve

Abstract

The invention relates to a valve device, in particular to an air valve. The air valve comprises a connection device, wherein a pipeline mounting hole and an air pump mounting hole are respectively formed in the connection device; baffles are arranged between the pipeline mounting hole and the air pump mounting hole; through holes connected with the pipeline mounting hole and the air pump mounting hole are formed in the baffles; an air valve nozzle is arranged in the air pump mounting hole; and an air valve core is arranged on the air valve nozzle. During the use, the air valves are respectively arranged at two ends of a pipeline through the pipeline mounting holes; after the air valves are mounted, an air pump is arranged in the air pump mounting hole of one of the air valves; the air pump presses air into the pipeline through the air valve core, so that the air pressure in the pipeline is increased, and the air tightness of the pipeline can be detected; therefore the air tightness of the pipeline can be detected for many times after the pipeline is produced or in a mounting process or after the pipeline is mounted; the air valve is convenient to operate; and the working period cannot be delayed, and heavy manual work is not brought to constructors.

Description

technical field [0001] The invention relates to a valve device, in particular to an air valve. Background technique [0002] At present, in the pipeline production process, the production raw materials are generally not cleaned, so there may be impurities in the product raw materials during the production process, and there may be gaps and pores in the formed pipeline. Therefore, after the pipeline is produced, the pipeline sealing test will be carried out. Detect whether there are gaps and pores on the pipe to measure whether the pipe product is qualified. [0003] At present, the airtightness test method and the water seal test method are mainly used to detect the tightness of the pipeline. The water seal inspection method is to inject water into the pipeline and observe the change of water pressure. If the water pressure changes, it means that the pipeline is not sealed. If the water pressure does not change, it means that the pipeline is well sealed and it is regarded a...

AI Technical Summary

Problems solved by technology

[0005] However, during pipe installation, after installation, or after wiring inside the pipe, since the seals at both ends of the pipe have been opened, the tightness of the pipe cannot be tested unless the two ends of the pipe are resealed and then flushed into the pipe Check the air pressure

Therefore, using this method, the detection cost is high and the construction is difficult. If the detection is carried out during the installation process, the construction period will be delayed and the labor intensity of the construction personnel will be increased.

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