The rotor is one of the components of water ring vacuum pump, which promotes the rotation and is conducive to the high-speed operation of the pump. The purpose of cooling the inside of the pump is to improve the working efficiency of the pump?
1. When the water ring vacuum pump works under higher differential pressure, a more effective cooling method can be adopted, that is, the rotor is cooled by circulating oil, oil holes and oil diameter are respectively set at both ends of the pump shaft, and the shaft head is driven in, and then discharged from the other end through the inner wall of the rotor. In addition to cooling the rotor, the cooling oil also lubricates the gears and bearings. This kind of cooling effect is good. The rotor temperature of water ring vacuum pump is lower than the shell temperature when it is running, which is often used in large pumps.
2. The heavier the pump load is, the greater the clearance is. This is because the rotor is cooled by oil, and the temperature is lower than that of the shell. The larger the load, the more severe the expansion of the shell is, and the larger the shaft spacing is, so the gap will increase.
3. Because of the high load, the temperature difference between the rotor and the shell is increasing and the gap is increasing, which will increase the head counter current and cause the pumping speed of the water ring vacuum pump to decrease. In order to overcome this shortcoming, when the pump is working under high load, effective measures should be taken. Generally, the shell and rotor are cooled by oil circulation system at the same time.
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