The maintenance and use of Roots blower are closely related

The advantage of large fan is to deal with the flow of gas. The application of blower varies with the change of pressure. The advantage of Roots blower is that when the pressure is adjusted within the allowable range, the flow changes little. The pressure selection range is wide, and it has the characteristics of forced gas transmission. Practice has proved that the use and maintenance of Roots blower are closely related!

Roots blower is a rotary compressor that compresses and transports gas through relative motion of two blade rotors in the cylinder. The compressor keeps the two rotors engaged by the synchronous gear at the rotor shaft end. Each concave curved surface on the rotor and the inner wall of the cylinder form a working volume. During the rotation of the rotor, the gas is taken away from the intake port. When it is moved to the exhaust port and connected with the exhaust port, the pressure in the working volume suddenly rises due to the backflow of gas with higher pressure, and then the gas is transported to the exhaust channel. The two rotors work alternately. The two rotors do not contact each other, and they are sealed by a tightly controlled gap, so the discharged gas is not polluted by lubricating oil.

The operating requirements of Roots blower are that the temperature of the conveyed intake medium shall not be higher than 40 ℃, and the content of particulate impurities in the medium shall not be greater than 1000mg/m ³， The large size of particles shall be less than 0,1mm. When using the pressure boost, it shall not exceed the rated pressure boost value specified on the nameplate of roots blower. Due to the special structure of roots blower, there are many differences with other fans in operation requirements, which must be noted.

When Roots blower is started, it shall first run for 2030 minutes without load, and observe whether the blower is abnormal. If there is a collision or friction sound, it shall be stopped immediately for inspection and troubleshooting. After the empty machine runs normally, start the machine with load. After the fan operates normally, gradually adjust the outlet valve (or gradually close the vent valve), gradually load it to the rated pressure, but do not overload it. It is absolutely forbidden to close all the gate valves at the air inlet and outlet when starting up, and it is also forbidden to stop suddenly when the machine is fully loaded.

The normal shutdown of Roots blower is to first open the bypass pipe for "venting", and then cut off the power supply after the pressure drop of air (basically zero), and then close the inlet valve and cooling water system. In case of abnormal shutdown, the bypass pipe shall be opened for "venting".