Imported mechanical seal1

Imported mechanical seal

Imported mechanical seal is an oil seal device for rotating machinery. Such as centrifugal pumps, centrifuges, reactors and compressors. Since the drive shaft runs through the inside and outside of the equipment, there is a circumferential gap between the shaft and the equipment. The medium leaks out through this gap. If the pressure in the equipment is lower than the atmospheric pressure, the air leaks into the equipment, so there must be a shaft seal device to prevent leakage. There are many types of shaft seals, because the mechanical seal has less leakage and long life. Therefore, in the world today, mechanical seals are the most important shaft sealing methods for these equipment. Mechanical seals are also called end face seals. Precautions when disassembling imported mechanical seals: a. Be careful when installing and disassembling mechanical seals, and it is strictly forbidden to use your hands Hammer and flat shovel to avoid damage to the sealing components. If the scale cannot be removed, it should be cleaned before disassembly. b. If mechanical seals are used at both ends of the pump, take care of each other during assembly and disassembly to prevent one from neglecting the other. c. For the mechanical seal that has been run, if the gland is loose and the seal moves, the dynamic and static ring parts must be replaced, and should not be re-tightened to continue use. Because the original running track of the friction pair will change after loosening, the contact surface It is easy to damage the sealing performance of imported mechanical seals. Reasons for failure of imported mechanical seals: The failure of mechanical seals is generally caused by abnormal leakage, abnormal wear, abnormal torque and other phenomena before they are known. The cause of the failure There are roughly the following four aspects: 1. The design and selection of the mechanical seal is incorrect. 2. The quality of the mechanical seal is not good. 3. The accuracy of the machine itself that uses or installs the mechanical seal cannot meet the requirements. 4. The machine is operating incorrectly.