What is the working principle of the special high-pressure fan for environmental protection equipment?

When the impeller rotates, due to the centrifugal force, the blades push the gas forward and outward, thus forming a series of spiral movements. The air between the impeller blades rotates at a spiral speed, and the air outside the pump body is squeezed into the side groove (sucked by the suction port). When it enters the side channel, the gas is compressed, and then it returns to the blades of the impeller and accelerates the rotation again. When the air passes through the impeller and the side groove along the spiral track, each impeller blade increases the degree of compression and acceleration. With the rotation, the kinetic energy of the gas increases, which further increases the pressure of the gas passing along the side channel. When the air reaches the connection point between the side groove and the discharge flange (the side channel narrows at the outlet), the air is squeezed out of the blade and discharged from the pump body through the outlet muffler.