As the three blade roots blower is a machine running at high speed, it will produce vibration, and because the pulsation of its internal air also increases the vibration of the three blade roots blower, so the three blade roots blower needs to be fixed on the ground during installation. According to different models of fans, 150 * 150 mm square and 300 mm deep square pits shall be dug on the ground according to the size of the fan, and the anchor bolts shall be embedded. Then the fans shall be connected through bolts and nuts. Finally, the square pits shall be filled with cement concrete. After the concrete is fixed, the nuts shall be tightened with force, so that the fan base and concrete are firmly connected, This can reduce the vibration displacement of the three blade roots blower during operation, improve the operation safety of the equipment, and greatly extend the service life of the fan due to the reduced vibration.
The flow rate of the three blade roots blower is positively correlated with the speed. If the flow rate decreases, then one possibility is that the speed decreases, and the reason for the maximum speed decrease is the belt slipping. There are two ways to connect the three blade roots blower with the motor, one is direct connection, that is, coupling connection, and the other is belt connection, that is, belt pulley connection. For the fan with belt coupling, if the belt slips on the pulley, the rotation speed of the fan will drop, resulting in a drop in flow and failure to establish the required pressure. Therefore, if it is found that the flow of the fan decreases and the pressure fails to meet the requirements, check the belt pulley connecting the fan and the motor, tension the belt, or replace the belt and increase the number of belts to ensure that the fan speed is normal.
The increase of the resistance of the system where the three blade roots blower is located will also lead to the decrease of the fan flow. Therefore, if the flow of the fan is insufficient, it is necessary to check the inlet filter - the inlet filter blockage will cause increased air inlet resistance. Once the inlet filter is found to be blocked, clean the filter and adjust the inlet pressure to the specified value.
1. When the lubricating oil of the three blade roots blower bearing is in normal use, it should be replaced at least once every six months. When it is used for the first time, it should be done after about 200 hours of operation. The second oil change should be done in 1 to 2 months. After that, the lubricating oil should be checked once a week. If the lubricating oil does not deteriorate, the oil change can be extended to 2 to 4 months, The specified brand of lubricating oil must be used for replacement, and the old oil in the oil tank must be completely drained and cleaned before new oil can be filled.
2. When changing the oil, drain the oil in the oil tank before injecting new oil. It is better not to add the oil on the basis of the old oil, because the oil in the oil tank will be too dirty and thick after a long time. This will affect the operation of the three blade roots blower. Pay attention to the position of the oil mirror during daily inspection. Once the oil level is found to be less than half of the oil mirror, it should be supplemented in time. If the three blade roots blower is short of oil for a long time, the motor will burn down in serious cases. 
3. If the oil is replenished, it is usually the equipment with oil leakage. Generally, the equipment in good condition rarely has the problem of obvious oil level drop, and there is no need to replenish oil during the normal oil change period.
4. The sequence of gear oil replacement for three blade roots blower: first remove the gear oil, then inject new gear oil. The first time: one month after starting and running, the second time after three months, and the second time after long-term running every six months. Pay attention to the oil level daily and replenish it in time.
5. Evaluation of lubricating oil quantity of three blade roots blower: the oil quantity of each model of three blade roots blower can be inspected at any time by the gear side oil mirror, and the oil level shall be kept between the center line when the machine is stopped. If the oil level is lower than the middle position, lubricating oil must be added in time; If the oil level is higher than the middle position, the oil temperature will be high, the exhaust body will spray oil, and the engine body will leak oil.
Text label: three blade roots blower
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