Selective laser melting worm-type separating and filtering system

The utility model relates to a worm-type separation and filtration system for selective laser melting. The utility model belongs to the technical field of metal 3D printing rapid forming. The device comprises an air suction port and an air outlet which are connected into an SLM equipment forming chamber, wherein the filtering device and the circulating fan are connected between the air suction port and the air outlet, the filtering device comprises a worm-type separator and a fine filtering device, an air outlet through port of the worm-type separator is connected with one end of the fine filtering device, and the other end of the fine filtering device is connected with the inlet end of the circulating fan; the volute separator comprises an air inlet through opening, an air outlet throughopening and a volute cylinder body which are communicated with the air suction opening, and a large-particle matter discharging opening located in the lower portion of the outer wall side of the volute cylinder body. Accordin