Suction device for powder sieving machine

The invention discloses a suction device for a powder sieving machine, and relates to the technical field of 3D printing powder sieving equipment. The suction device for the powder sieving machine comprises a powder sieving machine, a clamp hand, a dust cover, a dust cloth, a storage box, a suction pump, a steel plate, a suction tube, a bracket, foundation bolts, a powder collecting barrel and a rubber tube. The powder sieving machine is laid on the ground, the dust cover is laid on the powder sieving machine and is clamped through the clamp hand, and the dust cover is connected with the storage box through the cover cloth; and the suction pump is fixed to the bracket, one end of the suction tube is connected with the storage box, the bracket is used for supporting the storage box, and the bottom of the bracket is fixed on the ground through the foundation bolts. The suction device for the powder sieving machine does not need manual feeding, dust pollution when feeding and damage to human health are avoided.