Full air Annular high-pressure fan RB-077 High-pressure blower 5.5KW 380V Permeable medium pressure blower. Structural features of high pressure and high temperature resistant blower. The high-temperature fan is mainly composed of impeller, casing, air inlet, motor, connector, cooling fan blade, etc. The impeller adopts multi wing single inlet centrifugal impeller, which is made of high-quality galvanized steel plate or cold-rolled steel plate. And the blade is designed according to the aerodynamic principle. The impeller consists of 10 backward inclined airfoil blades, curved front disc and flat rear disc. The material is made of high-quality steel plate with high strength and good durability. And is subject to strict dynamic and static balance correction. Good air performance, high efficiency and stable operation. The air inlet adopts convergent streamline vortex reduction form, with small air loss and high working efficiency of high-temperature fan. The casing of the high-temperature resistant fan and the motor are installed and connected by metal castings, the cooling fan blades are installed on the motor shaft head. And the inlet and outlet pipe interfaces are set on the outer wall of the metal casting to cool the metal casting and the shaft head to ensure the normal operation of the motor under high temperature. The motor adopts a special high-temperature motor, the fluid part of the high-temperature fan adopts temperature resistant materials, and the cooling structure has reliable performance. Compared with other boiler induced draft fans, it has the advantages of simple structure, convenient maintenance and high cost performance.