The invention relates to an
air separation device for domestic garbage. The whole device comprises a preprocessing unit and an
air separation unit, wherein the preprocessing unit contains a feed belt, a
magnetic separator and a
crusher, and the
air separation unit comprises a charging belt, a dedusting filter
cartridge, a first circulating fan, an air separation chamber, an air return pipeline, a first roller, a second roller, a second circulating fan, a heavy substance storage bin, an intermediate-weight substance storage bin, and a light substance storage bin. In the invention, the separation of the domestic garbage is realized by the following steps: the domestic garbage entering the
magnetic separator for the
magnetic separation through the feed belt, removing
metal, after crushing the garbage entering the air separation chamber through the charging belt, the circulating fan controlling the an average section air speed in the air separation chamber of 8m / s, the air amount of 3400m<3> / h, separating the domestic garbage in the air separation chamber because of density variation; the heavy substance in the domestic garbage directly falling to the heavy substance storage bin because of large density; the heavy substance in the domestic garbage falling into the heavy substance storage bin after diversion under the
joint action of the air force and the first roller, controlling the rotation speed of the first roller as 19rpm; while the light substance in the domestic garbage keeping on moving under the drive of the air force, and entering the light substance storage bin through a belt
pulley under the drive of the second roller, controlling the rotation speed of the second roller as 38rpm, the returning air connecting the dedusting filter
cartridge through the pipes for dust separation, then returning to the circulating fan.