To 50XW-32-type swirl pump, for example, focusing on the type of pump structure, working principle. First, the structural characteristics Figure 1 for the 50XW-32-type non-clogging swirl pump structure. The pump is mainly composed of a pump body, an impeller, an intake section and the like, and the end surface is filled with a packing. The pump shaft is provided with a rolling bearing and an angular contact ball bearing, and the pump and the motor are connected through a coupling. Pump inlet and outlet and the axis of the pump are at right angles, the impeller used semi-open structure, placed on the side of the volute chamber, volute flow passage in front of the impeller is very spacious, it can convey a variety of impurities without the fluid Blockage, with good through performance; As the pump inlet front suction chamber, the working medium from the radial through the suction chamber into axial to the pump chamber, and the packing is installed in the right side of the suction chamber, basically Do not bear the pressure, so as to ensure the reliability and life of the seal; when the impeller rotates, the pump produces a strong axial vortex effect, so that the medium in the suction chamber continuous flow into the pump chamber, the seal chamber to withstand the pressure is small, Even if the shutdown, due to packing seal, the pump can ensure no leakage; impeller and the pump without sealing gap, the operation will not be reduced due to wear and tear of the pump efficiency; pump manufacturing simple, low cost, practicality. Second, the working principle Swirling pump named for its internal vortex motions, impeller driven by the shaft in the pump cavity after the rotation, the fluid by the impeller directly or indirectly in the pump chamber to do a strong axial vortex movement. Vortex middle pressure is low, so you can continue to suck the liquid. Axial vortex movement of the pressure and circumferential velocity along the radial increase in the periphery to form a certain energy circulation, and finally become through-flow discharge pump chamber.