Import vacuum pumps _ common problem solutions
1。 Vacuum is not enough: limiting vacuum of vacuum pump can not be pulled out
solution: main query vacuum pump sealing performance of the system, and see whether there is a slight leakage. The next step should be to see town gas, the pump running about 30 minutes, to discharge caused by the pollution of oil pump of compressible steam, and eliminate the compressible steam to limit the effects of vacuum. Change the rotor and spring, clean the rotor and the pump cavity; Check to see if the exhaust valve failure, cause the clogging in exhaust, change the exhaust valve if necessary.
2, imported vacuum pump oil: this is one of the most common defects of vacuum pump, the main window in the vacuum pump oil, fuel tank gasket, motor bearing shaft seal three directions, the main reason is that the vacuum pump is used for a very long period of time the location of aging, the seal is invalid, then the oil.
solution: replace the vacuum pump parts, such as aging oil window, shaft seals, gaskets and populate the pump oil felt pad. After completion of repair, using a special vacuum pump oil flushing vacuum pump before filling, and mouth clean solvent oil filter. Adhere to the clean tank. The most important thing is to pay attention to could not have a mixture of old and new vacuum pump oil and different brands of vacuum pump oil.
3, the pump shaft bearing wear: vacuum pump drive position damage is common faults, including the position of bearing, bearing, bearing, slotting and threaded parts such as wear and tear.
solution: can directly replace the original import vacuum pumps a part from the bottom to solve the problem. It should be noted that it is necessary to replace the original spare parts or vacuum water pump parts imported materials production, to ensure its efficacy.
4。 Corrosion: imported vacuum pump corrosion pattern can be divided into two kinds: general corrosion and corrosion parts. The two evenly on the surface of the vacuum pump. The latter only in part, such as corrosion, crevice corrosion, intergranular corrosion, stress corrosion. Wait.
solution: use of polymer composite materials, the surface of the vacuum pump is corrosion resistant. It has excellent chemical resistance, excellent mechanical action and bonding effect. Compared with the traditional pressure vessel welding repair, simple structure and low cost. , safety and good correction functions.
5, shell crack fracture: import vacuum pumps due to casting, machining defects, and often the internal stress and overload operation and cause the crack of parts or crack.
the solution: the traditional calibration method is the use of welding, but the raw material is cast iron parts, aluminum alloy, titanium alloy and some explosive dangerous places. Hard to use, correction methods for welding need to solve by other methods.
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