how to properly use the fluorine plastic chemical pump mechanical seal:
how to properly use the fluorine plastic Chemical pump mechanical seal:
1, fluorine plastic chemical pump the greater the compression spring mechanical seal seal better. In actual fact, excessive spring compression, friction can lead to rapid wear, instant burning; excessive compression to the spring to lose the ability to adjust the ring face, resulting in seal failure.
2, fluorine plastic Chemical pump seal ring map more tightly as possible. In fact, more harm than good ring seal tight. First, the increase between the ring and sleeve wear, premature leakage; second is to increase the fluorine plastic chemical pump mechanical seal ring axial adjustment of the resistance movement, frequent changes in operating conditions can not be adjusted in due course; third fluorine Plastic chemical pump mechanical seal spring fatigue easily damaged; 4 is to make ring ring deformation, affect the sealing effect.
3, fluorine plastic chemical pump seal stationary ring more tightly as possible. Basic static ring seal in a quiescent state, the effect will be relatively tight seal better, but too tight is harmful. One is caused by excessive deformation due to static seals, sealing affected effect; the second is mostly static ring material to graphite, are generally more brittle, the force can easily cause excessive fragmentation; Third, install, difficult to remove, easy to damage the stationary ring.
4, fluorine plastic Chemical pump impeller lock master the more tight as possible. Mechanical seal leakage, the leakage between the sleeve and the shaft (axis between the leak) is more common. Generally believed that fluorine plastic chemical leak is between the impeller shaft lock did not lock the mother, in fact, lead to leakage between the shaft more factors, such as the axis between the pad failure, offset, shaft within the impurities between the shaft and sleeve with the Department has larger geometric error, the contact surface damage, fluorine plastic chemical pump shaft gap between the various components, such as shaft screw is too long will result in leakage between shaft. Would lead to excessive lock master lock pad between the axis of premature failure, the opposite lock locking moderate female, between the axis of compression pad always maintain a certain flexibility in the operation will automatically lock master lock timely manner, so that the shaft is always in good inter- sealed state.
5, better than the old new. In contrast, using the new mechanical seal better than the old, but the new mechanical seal of quality or material selection is not the time, the mechanical seal with the size errors will affect the seal; fluorine plastic chemical pumps and permeability in the polymerization medium , stationary ring without excessive wear, or not replaced at all. Because the stationary ring in the stationary ring seat in a long time in a quiescent state, the polymer and impurities deposition as a whole, played a good seal.
6, overhaul better than not split. Once the mechanical seal leakage will be eager to overhaul, in fact, sometimes sealed and not damaged, just adjust the working conditions or the seal can be adjusted to eliminate leakage. In this way, to avoid waste and failure to verify their ability to judge, and accumulated maintenance experience to improve the quality of maintenance.
2012-04-26
