Petrochemical pump maintenance error at six

Petrochemical pump as machinery industrial products, in the actual use of product failure is a common problem. Part of the operation, users may have certain knowledge of products, with their own knowledge to repair the chemical pump products. This article in view of the chemical pump product maintenance error do some summary, in order to help users better handle product failure problem:

Myth, the greater the amount of spring compression, sealing the better the results.

Description: large amount of spring compression, not only no better sealing effect, it is easy to result in greater friction, accelerated wear and tear. Excessive compression spring lose the ability of adjusting ring end face, lead to seal failure.

Erroneous zone 2: ring sealed tight, the better.

Description: ring seal tight seal and shaft sleeve will accelerate damage, and it is easy to leak, reduce its service life, and the tight ring seal is increased ring axial adjustment, mobile, the resistance of the chemical pump in relatively frequent changes in working conditions, unable to effectively adjust; Second tight ring seals can cause spring fatigue damage more easily, the last point is tight ring seal will cause ring seal deformation, thus ultimately affect the chemical pump seal effect of the products.

Myth 3: static seal tight as possible.

Note: in general, chemical pump of the static seal is normally in the condition of static, static ring ring moderate slightly a little bit tight sealing effect will be better, but too tight will cause not only the static seal ring due to excessive deformation, affect the sealing effect, and the material of the static seal is given priority to with graphite, the more general brittle, excessive stress can easily cause fracture, and at the time of static ring seal ring installation and disassembly is difficult, the static ring is easy to damage.

Myth 4: the impeller lock tight as possible.

Description: mechanical seal leakage, the sleeve and the shaft leakage between situation is one of the more common leakage fault. For the average operator might think that the leakage of the shaft between impeller lock the mother didn't lock. Actually for leakage between shaft, there are many factors which can lead to the failure, mat failure, migration between shaft, shaft contains impurities, between shaft and shaft sleeve with larger shape error, contact surface damage, shaft have clearance between components, shaft thread is too long and so on many factors, can cause leakage between shaft. Mother lock lock will only cause axial mat premature failure, on the contrary moderate lock to lock the mother, the shaft between the mat keeps certain compression elasticity, lock the mother in operation will automatically lock timely, remain the state of good sealing between the shaft.

Myth 5: the new mechanical seal better than the old.

Note: in theory, the effect of using new mechanical seal is good to use the old mechanical seal, yet the actual use, the quality of the new mechanical seal or not at that time, the material selection and dimension error of the mets for the use of mechanical seal effect causes negative effects. In polymerized and medium permeability, and the static ring without excessive wear, or not to change as well. Because the static ring in static ring long time in the stationary state, make the polymer and the sediment is an organic whole, played a good sealing effect.

Myth: repairing is better than not hurt.

Note: for some users, the discovery of mechanical seal leakage, don't try so hard, repairing, because sometimes the seal is not damaged, it may also be because chemical pump work environment conditions change, this time only need to adjust the operation condition of the chemical pump can eliminate or adjust seal leakage.