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May 18, 2022 View:

Why to add lubricant in the oil sweeping lobe pump

The reason why the oil sweeping lobe pump is suitable for conveying liquids with high viscosity and lubricity, but without solid particles. It is because of the simple structure, consisting of stationary pump casing and rotating rotor, which has no suction valve and discharge valve, relying on the rotor in the pump body to act directly on the liquid in the form of static pressure on the side in contact with the liquid, and discharging the liquid by the squeezing effect of the rotating rotor, while leaving space on the other side to form low pressure, so that the liquid is continuously drawn in. So adding lubricant to the oil-sweeping lobe pump is a requirement to ensure its normal use, so how to properly refuel the pump? lobe pump1. Regularly check the oil level and oil quality of lubricating oil, in general, the normal oil level should be within 1/3-2/3 of the equipment oil level sight window or label. 3 range. The oil level shown in the oil cup only represents the oil replenishment capacity, while the oil level of the bearing box of the pump is to meet the operation requirements, and the oil level in the oil cup is lower than 1/4 of its total volume can be considered for oil replenishment.
2. Check and refill method, take out a small amount of lubricating oil as a sample and compare with fresh lubricating oil, and units with ability can consider oil quality testing to ensure the oil quality is qualified. If the sample looks cloudy, then it may be the result of mixing with water, which is often referred to as oil emulsification, at which point the lubricant should be replaced. If the sample course darkens in color or thickens, then it may indicate that the oil has begun to carbonize and the old oil should be completely replaced. If possible, flush the oil circuit with fresh lubricant. When replacing the lubricant, make sure that the lubricant being replaced is of the same type as the old and new, and that it is supplemented to meet the required oil level.
3. Using oil bath type lubrication system, if the oil temperature is below 60℃ (140F) and the lubricant is not contaminated, it is sufficient to replace the lubricant once a year. If the oil temperature is 60-100℃(140-210F), the lubricant needs to be replaced four times a year. If the oil temperature is 100-120℃(210-250F), the lubricant needs to be changed once a month. If the oil temperature is above 120℃(250F), then the lubricant needs to be replaced once a week.
4. Proper installation and maintenance are important factors for proper bearing operation, and attention must be paid to keeping the pump bearings clean. The bearings must be protected from contaminants and moisture, and must have proper installation and lubrication. In addition, the design of the bearing mating, the condition of the oil seal, the form of lubricant and the replacement cycle and specialized maintenance also play an important role and must be paid attention to.