Connection device of corner parts of flues of inlet and outlet of cyclone separator

The utility model relates to a connection device of the corner parts of the flues of an inlet and an outlet of a cyclone separator, which is characterized by comprising at least one flanged plate, wherein the flanged plates and steel plates form rectangular flues, and first reinforcing ribs arranged on the flanged plates and second reinforcing ribs arranged on the steel plates are mutually connected to form frames encircling the rectangular flues. The utility model has the advantages that wall plates are connected by adopting the flanged plates, and the normally installation of the wall plates can be ensured within a larger error range; the number of in-situ welding seams can be greatly reduced, and reliable quality guarantee is provided for the installation; and the reinforcing ribs between the wall plates are welded into a frame form, and the rigidity of the flues is effectively ensured by the reinforcing ribs on the wall plates.