PCB cleaning equipment

The utility model relates to PCB cleaning equipment which comprises a box body, a circle of spraying pipe is horizontally arranged in the box body, limiting mechanisms connected with the inner wall of the box body are arranged on the two sides in an opening of the circle of spraying pipe, lifting mechanisms are further arranged on the outer sides of the two ends of the spraying pipe, and each limiting mechanism comprises a fixing base with a clamping groove formed in one side of the top. Screws are arranged between the fixing base and the corresponding inner wall of the box body, the two sets of screws are connected through a screw pipe I. A vertical rod is further arranged at the top of the back face of the fixing base, a screw pipe II with the polygonal cross section is connected to the vertical rod in a screwed mode, a supporting part is arranged at the bottom end of the screw pipe II, and the screw pipe II is sleeved with a sleeve. Wherein one side of the sleeve is provided with a U-shaped plate correspon