It is not possible to ensure that the piping is always clear during the use of Roots fans.
It is not possible to ensure that the piping is always clear during the use of Roots fans.
After installation, the Roots fan needs to be equipped with a component when connecting the front pipe. This is a check valve. The Roots fan check valve is a very simple part, but it is a crucial one. If the Roots fan does not have a separate valve, there is a high risk of damage in future use.
Today, Roots Blower's mini-series will cover the role of check valves in Roots Blower piping.
During the use of a Roots fan, we cannot guarantee that the piping will always be free of obstruction. If the piping is blocked for some reason and the resistance increases, this can lead to overpressurization of the Roots fan. If the overpressure is too great, gas will be generated. Reversal of the gas flow, in which case the check valve ensures the safety of the Roots fan. When the gas reverses, the check valve closes to prevent the gas from flowing back. At this point, the Roots fan will increase voltage and current due to overpressure overload. At this point, the pressure reducing valve will start to exhaust the gas and the pressure will be maintained at the boundary of relative equilibrium. .
In an overpressurized situation, the root fan will show a series of symptoms. At this time, the airflow is insufficient to work normally. For these situations, we should find out the treatment in time to avoid bigger accidents.
Roots fan check valve need to work with other parts to play a role, especially when the gas reversal, Roots fan check valve in a semi-closed state, at this time the other parts of the Roots Blower, such as: pressure reducing valve, exhaust valve, etc., this countercurrent situation exists for a long time, these parts can play a very good synergistic effect.
The Roots fan compressor keeps the two rotors engaged by means of timing gears at the shaft ends of the rotors. Each concave curved surface portion of the rotor and the inner wall of the cylinder forms the working volume and carries the gas away from the suction port during rotation of the rotor and the Roots fan moves to the vicinity of the exhaust port The pressure in the working volume of the Roots fan rises suddenly due to the return of gas at a higher pressure, and the gas is then conveyed to the exhaust passage and connected to the exhaust port. The two rotors are not in contact with each other and they are sealed by a tightly controlled gap so that the exhaust gas is not contaminated with lubricating oil.
