Adsorption dryer convenient to maintain

The utility model discloses an adsorption type drying machine convenient to maintain. Dryer comprising a dryer body, the drying machine body is provided with a silencer connecting pipe. A control boxis arranged on the drying machine body; a PLC is arranged in the control box. The upper end of the silencer connecting pipe is connected with a distribution cover of which the upper end is provided with an opening; a vent hole communicated with the silencer connecting pipe is formed in the lower end wall of the distribution cover; the upper port of the distribution cover is covered with a distribution plate; a plurality of air outlet through holes penetrating through the distribution plate are formed in the distribution plate; an air outlet pipe is connected to each air outlet through hole inthe distribution plate, a silencer is installed at the end, away from the distribution plate, of each air outlet pipe, a control valve is arranged on each air outlet pipe, and each control valve is electrically connected with