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Precautions for Roots blower shutdown

Source: Roots blower manufacturer Published on: February 19, 2022 Hits:

Starting at Roots blower Before that, check the installation quality of each fastener and positioning pin, check the assembly clearance adjustment of the blower to meet the requirements, and check the installation quality of the inlet and exhaust pipes. Check whether the base of the component is completely surrounded and whether the foundation bolt is fixed.

Secondly, the lubricating oil of the main oil tank and the auxiliary oil tank shall be added to the center of the oil standard of 3mm/2mm before the roots blower is started, and the lubricating oil shall be replaced every three months. Due to the pressure of main oil tank and auxiliary oil tank, the upper and lower oil plugs of main oil tank and auxiliary oil tank should be tightened, otherwise oil leakage will occur.
Thirdly, cool the water to the cooling part of Roots blower, the temperature of cooling water shall not exceed 25 ℃, and the cooling water shall be 10L/min. Open the blower inlet and outlet valve plates and move the rotor. Listen carefully for any unusual sounds.
　　

Precautions for Roots blower shutdown

Check the rotation direction of the motor, which should conform to the direction indicated by the turning sign, or the Roots blower can not exhaust normally, and fan collision may occur. When the water is inflated, it will return to the fan, and when the air is conveyed, the conveyor will be sucked into the fan.
After checking the root environment and ensuring that the instruments and equipment are in good condition, open the exhaust valve and outlet valve of the blower and open the blower. When the fan operates normally, the exhaust valve will slowly close. At this time, the pressure gauge of fan will rise to 0.04-0.05MPa.
When the clover device stops ventilation, first slowly open the exhaust valve, close the outlet valve, and then turn off the power to turn off the roots blower.
Under the constant torque load of Roots blower, the power saving rate is N%= Δ N% speed is proportional. Although it is different from ordinary fans and pumps, its power saving rate is high, but because of its high power, and as long as the furnace wall is not damaged, it will work continuously for 24 hours, and the opening time is very long.
Therefore, there is great potential and high cost for power saving. After the technical transformation of Roots blower, the production mode of regulating air pressure or air volume was changed by adjusting the opening of the outlet valve. The labor intensity is reduced, the adjustment time is good, the product qualification rate is improved, and the unit consumption is significantly reduced.
1. When connecting the pipeline at the inlet end of the fan, be sure to cover the inlet flange of the fan to prevent foreign matters such as welding slag from entering the fan. Before connecting the pipeline, clean the foreign matters in the inlet and outlet pipelines.
2. Check the installation of machinery and instruments to see if they are loose, and check the coupling, dowel pin and nut of the direct connected roots blower to see if they are loose; Check whether the tightness of the belt is appropriate for the fan with coupling, whether the cooling water valve switch is easy to use and whether the waterway is smooth if there is cooling water.
3. Check the height of the oil level line of the oil pointer in the oil tank of the oxidation fan and whether it is in the center of the red point of the oil pointer. Zhangqiu Roots Blower
4. Before starting up, turn the fan at least two weeks according to the arrow direction by hand to check whether there is any abnormality, and jog the fan to see whether its rotation direction is abnormal.
5. Open the valve and vent valve on the pipeline before starting, and open the cooling water valve if there is cooling water.
6. During normal shutdown, first depressurize and reduce load, then start Roots blower without load and turn off cooling water.
7. For fans requiring cooling water, the cooling water must be discharged after shutdown in winter to avoid freezing and damaging the fan.