Mechanical Bar Screen decontamination machine is made of ABS engineering plastic, nylon or stainless steel special type rake teeth, in a certain order of arrangement installed on the rake shaft to form a closed rake chain. The lower part of which is installed in the inlet water, when the transmission system drives the sprocket for uniform speed directional rotation, the entire rake chain will move from top to bottom, and carry solid debris separated from the liquid, the fluid flows out through the rake gap, the entire working state is continuous.