made of high-strength anti-aging engineering plastics such as ABS and POM, stainless steel springs; A filter screen is installed inside the lifting column to prevent the nozzle from being blocked, and the nozzle and the filter screen are convenient to disassemble and replace; The dirt on the lifting column can be cleaned quickly and automatically, ensure the reliable operation of the nozzle After opening, the central lifting column rises under the action of water pressure, and the top nozzle is sprayed in a planar shape, with uniform spray dispersion and no dead angle in the spraying range.