Mechanical seal flush significance

Mechanical seal flush meaning - 2020 11 - 27 mechanical seal flushing purpose is to prevent impurities set product, prevent air bag forming, maintaining and improving lubrication, etc. , when flushing fluid temperature is low, and cooling effect. Hengda mechanical seal on mechanical seal flush to everybody below technical characteristics. 1, scour is washed: sealed using the work of the host medium, passed by pump outlet pipe into the sealed cavity. It is mainly used for cleaning fluid. When high temperature or have impurities, can be set up on tube cooler, filter and so on. Sealed anti scour: using the work of the host medium, introduced by the outlet of the pump seal cavity, after scouring through the pipeline flow back to the pump inlet. It is mainly used for cleaning fluid. Full flush sealed is to use the work of the host medium, introduced by pump outlet through the pipeline sealing cavity, wash again after concession road flow back to the pump inlet. The method on the cooling effect is better. 2, wash: the introduction of outside system compatible with the sealed medium cleaning fluid to seal cavity flushing. Outside the flushing fluid pressure should be larger than the sealed medium 0. 05 - - 0. 1 mpa, applicable to occasions medium for high temperature or solid particles. Flush fluid flow should guarantee the take away heat, still need to satisfied the need of scour, won't produce erosion of the seals. Therefore, need to control the pressure seal chamber and scouring velocity, general cleaning of flushing fluid flow rate should be less than 5 m/S; Slurry liquid containing particles must be less than 3 m/S, to achieve the velocity value, flushing fluid and sealing cavity pressure difference should be 0 or less. 5 mpa, generally take 0. 05 - - 0. 1 mpa, the double mechanical seal desirable 0. 1 - - 0. 2MP。 Flushing fluid into position and discharge seal chamber orifice, should be set up around the seal face, and should be near the ring side, in order to prevent the graphite rings by erosion or deformation caused by uneven cooling temperature difference, and the impurity accumulation and coking, etc. , can be used to introduce or cut more flush. When necessary, the flushing fluid may be hot water or steam. /