What are the correct starting steps for the three blade roots blower?

The three blade roots blower is a positive displacement fan, which can also be used as a vacuum pump for suction. The air volume delivered is proportional to the number of revolutions. Each time the three blade impeller rotates, two impellers will suction and exhaust three times. Next, we will share the correct starting steps of the roots blower.

1. The starting procedure of three blade roots blower is to open the gate valve first, and then open the vent valve. After these two valves are opened, start the fan. At this time, the fan is in no-load operation, which is called venting. When the fan runs normally, we slowly close the vent valve, observe the condition of the fan pressure gauge, and reach the normal pressure.

2. The shutdown of three blade roots blower is the same. Open the vent valve, close the gate valve, and then turn off the power.

In a word, starting without venting is a very dangerous wrong operation. Roots blower has the nature of forced exhaust. If there is no venting, or the venting valve is only slightly opened, the motor fan has a certain speed, and the air has been sucked in but cannot be discharged. The gas is compressed in the blower rotor cavity, the pipeline between the blower outlet and the valve, and the pressure keeps rising, In case of serious overload operation, the motor will be burnt out if it is unable to be pulled, and in case of heavy overload operation, the machine will be exploded.