Water seal barrel

Abstract

The invention discloses a water seal barrel which can thoroughly solve the fundamental problem of sealing between an ultrapure water storage barrel tank and the outside atmosphere. The water seal barrel comprises a sealed barrel body, wherein a diaphragm plate is arranged in the barrel body, so that an upper half cavity and a lower half cavity are formed; a middle pipe for communicating the upperhalf cavity and the lower half cavity is arranged in the diaphragm plate in a penetrating way; a negative pressure air inlet communicating with the upper half cavity and an exhaust outlet communicating with the lower half cavity are formed in one side wall of the barrel body; an overflow port communicating with the upper half cavity and a drain outlet communicating with the lower half cavity are formed in the other side wall of the barrel body; the upper edge of the overflow port is higher than an upper end port of the middle pipe; the lower edge of the overflow port is lower than the upper end port of the middle pipe; an overflow control valve is arranged on the overflow port; a drain control valve is arranged on the drain outlet; a water supplementing port and an external end port are formed in the top wall of the barrel body; and a water supplementing control valve is arranged on the water supplementing port. The water seal barrel provided by the invention can be widely matched ontovarious liquid storage containers.

Description

technical field [0001] The invention relates to a supporting facility for realizing sealing and pressure balance between an ultrapure water storage tank in an ultrapure water production system and the outside atmosphere. Background technique [0002] With the country's emphasis on and investment in the semiconductor chip industry, the use of ultrapure water in the microelectronics industry is increasing day by day. When ultrapure water is produced, there must be a set of pure water storage tanks in the middle. How to solve the problem of pure water? It is an urgent problem to balance the pressure between the storage tank and the outside atmosphere and maintain the seal with the atmosphere. It is an urgent problem to prevent bacteria and dust in the outside air from polluting the water body. At present, most manufacturers have adopted a very simple method: add some water to a tank, and then insert a pipe connected to the pure water tank to solve the above problems, but the ef...

AI Technical Summary

Problems solved by technology

At present, most manufacturers have adopted a very crude method: add some water to a tank, and then insert a pipe connected to the pure water tank to solve the above problems, but the effect is not ideal and the reliability is not high , in the actual production process, there is still the problem of polluting the tank water

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