Teach you the failure and maintenance of a simple freezer
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Our products is produced by CNC machine.
Material: C83600, C84400.
Working Media: Seawater, Steam, Oil etc.
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2) The oil temperature in the crankcase should be kept between 10-65 °C, and the suitable working temperature of Zui is 35-55 °C. Freezer 3) The oil level in the crankcase should be sufficient and should be stable for a long time.
4) The filter element of the oil filter should not be blocked, and the fine oil filter with differential pressure should have a blocked indication. The common faults of the lubrication system zui are: the oil pump has no pressure, the pressure regulation is out of order and the pressure gauge pointer is violently oscillated. The main reasons are:
1) The oil temperature in the crankcase is too low, the viscosity of the frozen lubricating oil is too large, the filter inlet filter of the pump is too dense, the filter element is blocked, and the oil level is too low, and the oil pump is difficult to suck, causing suction.
2) The oil pump works for a long time, the pump wears seriously, the internal leakage is too large, and the volume effect is obviously reduced.
3) The pressure regulating valve plug is stuck in the open position or the spring of the pressure regulating valve fails.
4) The system is seriously leaking.
The failure of the lubrication part of the freezer is not a problem of the lubrication system itself, but it will eventually lead to system failure. If the piston ring structure is selected and the improper assembly and assembly of the cylinder can cause a lot of oil running phenomenon, and the abnormal leakage at the shaft seal will cause the oil level in the crankcase to drop significantly, which will lead to the suction of the oil pump; The front and rear main bearing assembly clearance is too small, the lubricating oil is too dirty and the long-term use of lubricating oil deterioration will increase the friction and wear of the moving parts, or at the same time, the high and low pressure helium will be caused by the cylinder wear, which will cause the crankcase to heat up. As the temperature rises, the viscosity of the lubricating oil decreases, thereby forming a vicious cycle of lubrication conditions and causing failure of the lubrication system. Therefore, the failure analysis of the lubrication system should be comprehensive, that is, in addition to the problems of the lubrication system itself, it should be checked, analyzed and judged from the operating conditions of the freezer, if there are abnormal vibrations, sounds, heat and leakage, etc. .
The maintenance of the lubrication system should pay attention to the following points:
1) Regularly check the oil quality according to the oil change index specified by the frozen lubricating oil, and replace or replenish the filtered new oil. 2) Regularly replace or clean the filter element, piping and crankcase.
3) Pay attention to observe whether the oil level, oil temperature and oil pressure are normal during daily inspection.
4) During the medium and overhaul, attention should be paid to checking and adjusting the end face clearance of the oil pump. If necessary, the pump should be replaced. The end face clearance of the pump is about 0.03-0.08mm depending on the size and size. For the specific values, please refer to the assembly technical requirements and factory regulations of the pump.