Vacuum belt dehydrator filter cake surface impurity removal device

The invention discloses a vacuum belt dehydrator filter cake surface impurity removal device which comprises an impurity removal unit, a filter cake surface cleaning unit, a filter cake surface cleaning unit, a filter cake surface cleaning unit, a filter cake surface cleaning unit and a filter cake surface cleaning unit, and the filter cake surface cleaning unit comprises a dehydration plate, an interception plate and a liquid suction nozzle; and the negative pressure adsorption unit comprises a small steam-water separator arranged on one side of the dehydration plate, a negative pressure pipe arranged on one side of the small steam-water separator, an impurity collection pipe arranged below the dehydration plate and connected with one end of the negative pressure pipe, and adsorption hoses arranged at the two ends of the impurity collection pipe and connected with the interception plate. By arranging the flow guide unit, impurities can be accurately guided to the liquid suction nozzles by adjusting the angle