High purity ammonia low temperature reciprocating pump

Abstract

The invention relates to low temperature reciprocating pumps, in particular to a low temperature reciprocating pump for producing electronic grade high purity ammonia required in the industries of electronics, chemistry, metallurgy, steel and the like and conveying non-pollution high purity ammonia required in scientific research. The reciprocating pump comprises a bump body, an inner cylinder is arranged in the pump body, the inner cylinder is communicated with an inlet and an air return port, a liquid input valve is arranged at one end of the inner cylinder, the other end of the inner cylinder is provided with a liquid output valve corresponding to the liquid input valve, a piston rod is further arranged on one side, close to the liquid input valve, of the pump body, the inner wall, enclosing the piston rod, of the pump body is provided with a seal assembly, a liquid output flange is on the pump body and located on one side of the liquid output valve, the liquid output flange is connected with a liquid output connection pipe, the connecting position of the liquid output connection pipe and the liquid flange and is fixedly connected through a cap nut, a vacuum protection valve is further arranged on a casing of the pump body close to one side of the inner cylinder, and the requirement for conveying and pressurizing the electronic grade high purity ammonia is met.

Description

Technical field [0001] The present invention involves low -temperature pumps. It is specifically a low -temperature forward pump that is electronically, chemical, metallurgy, steel and other industries that require electronic -level high -pure ammonia production and scientific research. Background technique [0002] At present, in the electronics, chemicals, metallurgy, steel and other industries, especially in the field of electronic LEDs and photovoltaic solar energy, a large amount of high -purity ammonia is required to provide the source of nitrogen. The purity requires more than 99.99999%.The conventional ammonia pumps on the market use ordinary ammonia water as the conveying medium, and do not require the pollution of ammonia water. The medium often causes ammonia pollution due to unwaeiners inside the ammonia pump during the transportation process.Delivery and booster requirements.If it is used for high -pure ammonia, it is necessary to clean the unit after the installatio...

AI Technical Summary

Problems solved by technology

Conventional ammonia pumps on the market use ordinary ammonia water as the delivery medium, and do not require the pollution of ammonia water during the delivery process. However, the unclean inside of the ammonia pump often causes ammonia water pollution during the delivery process, which cannot meet the requirements of electronic grade high-purity ammonia. transportation and pressurization requirements

If it is used for the transportation of high-purity ammonia, the unit needs to be cleaned after the installation is completed, knowing that the cleanliness meets the system requirements, a lot of flushing time is wasted, and the medium is wasted

Images