Heat pump technology is advanced, high efficiency, long-term stable operation in the hot state without leakage, no additional cooling system, the use of safe and reliable, and other features in our heating medium heating system has been widely used, has entered the petroleum, chemical, Rubber, plastic, pharmaceutical, textile, printing and dyeing, roads, food and other industrial fields.
　　
In the petrochemical industry, the fluids handled are mostly flammable and explosive. Once the mechanical seal fails to leak, it not only pollutes the environment but also affects human health but also causes fires and explosions. Therefore, the dependability of the pump depends largely on Machinery Seal. In the petrochemical industry, the selection of seal structure under different working conditions is carried out by mechanical seal, which reduces the failure rate of sealing and improves the reliability of use.
　　
Octagon pump mechanical seal is divided into three types: one is high temperature resistant carbon fiber packing seal, a high temperature graphite seal, there is a mechanical seal of alloy steel. P Plus oil pump experts on the mechanical seal made a detailed analysis, the majority of pump users carefully read the product, pay attention to the use of methods. First: the amount of compression to be moderate spring, spring compression is too large, can lead to rapid wear and tear wear and tear, too small and will make the spring lost the ability to mediate the dynamic ring end face, leading to failure.
　　
Second, the mechanical seal ring ring elastic moderate: tight seal on the one hand to exacerbate the wear and tear between the seal and the sleeve, on the one hand to increase the axial adjustment of the moving ring, but also may cause excessive spring fatigue damage, or even East ring ring deformation. Third, the static ring ring is tight and the static ring seal is in a static state. The static ring seal is over-deformed and affects the sealing effect. The static ring material is mostly graphite, generally brittle, Third, installation, demolition difficulties, easy to damage the static ring, the above three reasons, static ring seal should be tight and appropriate. Fourth, hot oil pump impeller lock should be tight and appropriate. Lock over lock only lead to premature failure of the shaft pad, on the contrary, lock the lock body, so that the shaft pad always maintain a certain degree of compression flexibility, in operation, the lock will automatically lock in time, the shaft is always in good Sealed state. Fifth, the problem of new and old thermal oil pump, in general, the user think the new thermal pump is better than the old, it is not true, when the new mechanical seal material improper choice, with the larger size error will affect the sealing effect; polymerization and Permeable medium, static ring without excessive wear, or not replaced as well. Because the static ring in the static ring seat for a long time in a quiescent state, the polymer and impurities deposited as one, played a better seal.

So that in the process of selecting heat-conducting oil pump do not choose one-sidedly, to effectively meet the needs of the scene, check into the seat, so as to help refine the petrochemical industry development.

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