Leather fatting agent standing desalting device

The utility model discloses a leather fatliquor standing desalting device which comprises a storage box and a desalting box, a stirring shaft is installed in the center of an inner cavity of the storage box, the top end of the stirring shaft is connected with the output end of a servo motor, a reciprocating lead screw is installed in the center of an inner cavity of the desalting box, and a first movable block is connected to the reciprocating lead screw in a sleeved mode. A first lead screw sleeve is fixedly installed in the first movable block, a reciprocating lead screw is sleeved with the first lead screw sleeve in a threaded mode, a plurality of salt separation rods are symmetrically welded to an inner cavity of the desalting box, a first belt wheel is fixedly installed at the bottom end of the stirring shaft, and a second belt wheel is fixedly installed at the bottom end of the reciprocating lead screw; and a transmission belt is connected between the first belt pulley and the second belt pulley in a sl