Models 9-19 and 9-26Centrifugal ventilation fan 1 Purpose: Type 9-19, 9-26Centrifugal ventilation fanIt is generally used for forging furnaces and high-pressure forced ventilation, and can be widely used for conveying materials, conveying air, and gases that are non corrosive, non self igniting, and do not contain viscous substances. The temperature of the medium generally does not exceed 50 ℃ (maximum not exceeding 80 ℃), and the dust and hard particles contained in the medium are not greater than N150mg/m3. This ventilation fan is a single suction type with two structural forms. There are NO.4, 4.5, 5, 5.6, 6.3, 7.1, 8, 9, 10, 11.2. 3 Structural Features No.4-6.3 mainly consists of impellers, casings, air inlets, brackets, etc; No.7.1-16 is mainly composed of impeller, casing, air inlet, transmission group, etc. ① The impeller of the 9-19 type fan has 12 blades, and the blade of the 9-26 type fan has 16 blades. All belong to the forward curved blade type. The maximum circumferential velocity at the outer edge of the impeller diffuser shall not exceed 140m/s. After the impeller is formed, it undergoes static and dynamic balance correction, so it runs smoothly. ① The casing is welded with ordinary steel plates to form a snail shaped shell as a whole. ① The air inlet is made into a convergent streamlined overall structure and fixed to the front cover plate group with screws. ④ The transmission system consists of a main shaft, bearing tubes, and bearings. The spindle is made of high-quality steel. The overall structure of the bearing box adopts rolling bearings and is lubricated with bearing grease.
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