The utility model discloses a double -tube liquid under the
slag slurry pump, including the pump body, still including the feeding mechanism, feeding mechanism: it includes the feeding channel, the upper
narrow channel, the lower wide channel, the upper side spiral piece, the
cutting groove, the lower side spiral piece, the avoidance mouth, the feeding channel fixed connection on the upper surface of pump body, the inside upper side of feeding channel is the upper
narrow channel, the inside lower side of feeding channel is the lower wide channel, and the inside rotatable connection of upper
narrow channel has the upper side spiral piece, and the spiral surface of upper side spiral piece is provided with the
cutting groove that distributes evenly, and the inside rotatable connection of lower wide channel has the lower side spiral piece, and the spiral surface of lower side spiral piece is provided with the avoidance mouth that distributes evenly, and the lower end of upper side spiral piece is fixedly connected with the upper end of lower side spiral piece, and the lower side of lower side spiral piece is contacted with the upper surface of pump body, and this double -tube liquid under the
slag slurry pump, conveying is smooth, and the service life is longer.