The Leak Property Research of Polymer Fluid in Helical Gear Pump

It is founded to the leak model of clearance of polymer fluid with utilization the origin equation in this paper, and the hidden function of the best clearance is obtained, simultaneously it is proceed to the numeric calculation. The investigative results offer the important theory foundation of the design of polymer gear pump. The power loss of leakage is got through the clearence leakage capacity, and the friction power loss is attained by the velocity distributing. The mathematic calculation models of the optimal clearence are obtained, at the same time the example and the calculation results are given out. The researchful result indicates that the wasting friction power of transmission power-law is much more than that of transmission Newton liquid, and the optimal radial leakage and axial leakage of power-law are biggest.