1 The use of fans 9-19,9-26 pressure centrifugal fan , generally used for blacksmiths furnace and high pressure forced ventilation , can be used for transportation of materials , air and non-corrosive, non-spontaneous , non-explosive , non-volatile , non-sticky material of gas . Medium temperature generally does not exceed 50 ℃, the maximum does not exceed 80 ℃, the medium contained in the dust and hard particles is not greater than 150mg/m3. 2 Fan Type 1 , the fans are single inhalation, usually № 4,4.5,5,5.6,6.3,7.1,8,9,10,11.2,12.5,14,16, a total of 13 machine number . 2 , D-and L fans are usually made of two types . 3 , the export position of the fan exit angle to the cabinet said , "left" , "right" fan housing made of 0 degrees, 45 degrees , 90 degrees, 135 degrees, 180 degrees , 225 degrees. . The fan structure 3 The main fan impeller , housing, air inlet , brackets and other components. ( 1 ) :9 -19 type fan impeller is 12 ,9 -26 fan blades to 16 blades, are pre- curved . Impeller outer edge of the diffuser must not exceed the maximum peripheral speed 140m / s, the impeller forming, static and dynamic balance correction , it is smooth . ( 2 ) Chassis: ordinary steel plate welded into snail shell as a whole. ( 3 ) air inlet : make the overall structure of convergent streamlined , with the front cover bolts . ( 4 ) Transmission group : the spindle bearing housing , couplings and other components. Spindle is made from high quality steel , the overall structure of the bearing housing . Using rolling bearings , roller bearings, lubricated with grease .
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