What is the cause of oil leakage from fluoroplastic chemical pump oil seal?

　　Fluoroplastic chemical pumps are commonly used in the chemical industry in the chemical equipment, usually used in the chemical industry, fluoroplastic chemical pumps in the use of oil seal leakage in the process of what to do, how do you need to solve it? The following is an introduction to the common causes of oil seal leakage.

　　Fluoroplastic chemical pump oil seal leakage reasons

　　1、The reason of conveying medium

　　The working medium is oil. The selection of oil seal material should consider its compatibility with the oil, poor compatibility between the two will produce lip swelling, hardening, softening, cracking and other oil leakage.

　　2、Oil seal assembly shaft factors lead to oil leakage

　　Oil seals are mounted on the rotor shaft, if the shaft processing is not fine, surface roughness or hardness is not enough, or the shaft has a defective incomplete, will lead to oil seals and shaft with the phenomenon of bad, then the oil seal will leak.

　　3, oil pump assembly is not standard

　　Oil pump in the assembly with the help of tooling, if the tooling in the pressure of the oil seal when the force is too large, the oil seal will be pressed deformation, and the gap between the shaft becomes large; oil seal through the threads or splines will be the oil seal lip scratches; assembly of the oil seal accidentally mixed into the sundries, which is also the reason for the leakage of the oil seal.

　　4. Lip wear reasons

　　Cleanliness problems: casting sand, machining chips, oil impurities, etc., a large number of accumulation of oil seal lip parts, abnormal wear occurs when working; oil seal position and rotary axis is not the same axis, the oil seal pressure mounted after the occurrence of migratory wear, lip abnormal wear; oil seal lip at the lithium grease lubrication is poor, dry friction will occur, resulting in abnormal wear.

　　5、Oil pump oil seal quality problems

　　Mechanical seal has a moving ring, static ring, sealing ring and other components, sealing ring is elastic, will be affected by the temperature, cold weather or hot weather, sealing ring will be thermal expansion and contraction, storage, pay attention to, in addition, the spring in the mounted on the shaft, the compression should be the right amount, too much compression, the spring resilience is not good, easy to leak; packing seals have a skeleton packing and other forms, when the material is not in accordance with the characteristics of the medium of oil pumps, or in the production of When the material does not meet the characteristics of the oil pump medium or in the manufacturing process has quality problems, it will directly cause the leakage of the oil pump oil seal.

　　6、The reason of shaft

　　The surface roughness and hardness of the rotary shaft is unreasonable, and the oil seal with the parts will use high-frequency quenching, the hardness is not less than HRC55; rotary shaft surface defects, such as: corrosion, scratches, directional knife marks and so on.

　　7、Skeleton reasons

　　Due to the oil seal spring material and manufacturing problems, resulting in its performance failure. Spring failure in the form of: spring too tight or too loose, too loose when the spring compression force is small, can not achieve the sealing effect, too tight when the spring compression force is large, the oil seal and the rotary shaft with improper coordination, resulting in abnormal wear of the oil seal, oil leakage.