Building sand processing and cleaning equipment

The invention relates to the field of engineering, in particular to building sand processing and cleaning equipment. Comprising a stone crushing device, a fine sand processing device, a feeding device and a sand washing device, a second motor is started to drive a second rotating wheel to rotate, a second belt is driven to rotate, a third rotating wheel is driven to rotate, a second connecting rod is driven to rotate, a first crushing wheel is driven to rotate, and a third motor is started to drive a first connecting block to rotate; a motor is started to drive a third connecting rod, a fourth connecting rod, a second connecting block, a fifth connecting rod and a second smashing wheel to rotate, then a first smashing wheel and the second smashing wheel rotate relatively, stone is smashed into fine sand, the fine sand falls onto a screen, and a fourth motor is started to drive a third disc to rotate and drive a vertical groove and a transverse groove to reciprocate left and right; and a screen is driven to mo