Hot oil pump seal structure in the following ways: (1) single-end seal: the use of flushing, flushing fluid for about 100 ° C by the second-line wax, the pressure higher than the sealed cavity 0.05 ~ 0.15Mpa. Gattern outside with hot water (soft water) for rapid cooling. Generally can use a cycle (ten months). (2) metal bellows machine seal: compact structure, easy installation, in the case of the same auxiliary system, life expectancy of 2 to 3 times the normal seal. (3) double-end machine seal: the use of circular washing, plus external cooling, life is single 1.5-2 times. (4) The choice of hard and soft friction pairs (YG6 / YG8, SiC / SiC, etc.), for high viscosity, medium containing a small amount of solid particles or crystallization of media, with good results.
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