Advantage characteristics:

　　1. Strong wear resistance and strong impact resistance.

　　2, excellent corrosion resistance, no noise, good anti-adhesive.

working principle:

 　　The impeller is filled with packing or oil seal sealing structure for conveying various kinds of clear liquid and slurry. The centrifugal force of the auxiliary impeller in the starting state makes the pressure of the sealing part negative, which ensures that even if the packing is worn during operation, the seal does not leak. The temperature of the medium to be transported is -20 ° C - 105 ° C, and the inlet pressure of the pump cannot be greater than 0.2 MPa.