The centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Centrifugal fans are widely used in grease factories, mainly including 1. Ventilation and dust removal: used for oil cleaning, meal/hull crushing, ventilation and dust removal during oil/meal transportation; 2. Pneumatic conveying: such as wind transportation of soybean hulls , The transportation of clay, the air separation of skin/kernel, the transportation of coal ash; 3. Ventilation and drying: such as the induced air of the quenching and tempering tower, the drying/cooling of the puffed material, the drying/cooling of the meal, etc. When the impeller rotates with the rotating shaft, the gas between the blades also obtains inertial centrifugal force with the rotation of the impeller, and the gas is thrown out from the outlet between the blades. The thrown out gas squeezes into the casing, so the pressure of the gas in the casing increases, and then it is directed to the outlet to be discharged. After the gas is thrown out, the pressure in the center of the impeller drops. The outside air can be sucked in from the suction port of the fan through the orifice in the center of the front disc of the impeller, and the gas is continuously delivered.
