Apparatus for treating a liquid

摘要

A cleaning device operates to clean a radiation tube within a housing having an internal passageway. The radiation tube is oriented to have an upper end and a lower end. The cleaning device has liquid flow passages having a surface angled relative to the flow of liquid through the internal passageways. Under the flow of water in the internal passageway, the cleaning device is caused to move from a lower end to an upper end of the tube. Flow through the liquid flow passages causes a rotational motion. When liquid flow ceases, gravity causes the cleaning apparatus to return to the lower end of the tube. Upon this return motion, liquid flow through the liquid flow passages again causes rotational motion.