Low-cost sale of used oil filter model range

Select the type of pump oil filter pump to determine: conventional pump structure can be divided according to gear pumps, vane pumps, piston pumps three. Gear pumps for low pressure system is not sensitive to oil pollution; vane pump flow evenly, small ripple noise, but not very good suction characteristics, sensitive to oil pollution; easy to get high-precision piston fit, leak Small, high volumetric efficiency, and vane pumps used in high voltage systems together, sensitive to oil pollution. Therefore, the choice of gear pump vacuum oil purifier as the intake and exhaust pump. Determining pump parameters: working pressure of the pump is determined: To improve the reliability of the system, to extend the pump life, the normal operating pressure of the oil pump vacuum oil purifier is 70 to 80% of the pump rated pressure. Because the system is running in working conditions under negative pressure and no actuator hydraulic cylinders and hydraulic motors, and therefore the pump working pressure should be no higher than 0.5MPa. Determining the flow rate of the oil pump: pump maximum flow capacity shall be greater than the system working. Pump motor power to determine: general parameters of the pump should make the work efficiency of the pump in the effective area of ??the curve, often by 0.8 meter, generally allows a short time to consider the motor overload 25% and then checking other working conditions to determine the motor power. Select the oil filter oil heater work properly in the following 80 ℃, combined with the relationship between saturated vapor pressure and temperature to determine the vacuum degree of 0.06MPa, the evaporation of water at this temperature is 70 ℃, while the oil can maintain its performance . Therefore, the oil needs to be heated to 60 ~ 70 ℃, due to the high altitude can achieve a lower degree of vacuum to be appropriate to increase the heating temperature. Heating power determines the oil purification regeneration rate, power is too small heating time increases, it will reduce cleaning efficiency; too much power to increase the cost and difficulty of installation. Because oil is a poor conductor of heat, power capacity of a single heater is not too large, in order to avoid excessive heat around the oil deterioration phenomenon occurs, so select the appropriate heater power is very important. Oil filter vacuum equipment design and verification