Introduction to the principle of using the meltblown cloth Roots fan
Meltblown Fabric Roots BlowerWhat are the principles to be followed in the process of use? Today meltblown cloth Roots fan editor will take you to understand from 2 aspects.
1. Fundamentals.
The meltblown cloth Roots fan is a rotor compression machine where the axes of the two rotors are parallel to each other. The rotors are combined with the impeller and the shaft, and there are small gaps between the impellers and between the impeller and the casing and wall panels to avoid mutual contact. The two rotors are driven by the prime mover through a pair of synchronous gears and rotate at equal speeds in opposite directions. With the help of the two impellers of the mutual friction, assuming that their pages are in contact with each other, the blower inlet and exhaust ports are not directly connected, the impeller and the casing and wall panels surrounded by a closed primitive volume, the size of which does not change in the rotation process. Traditional situation, the compression of the gas, is in the primitive volume and the exhaust port connected to the moment, there is a high-pressure gas to the primitive volume back to the equalization of pressure and realize.
2. Pre-intake principle.
The pre-inlet compression method of the meltblown fabric Roots fan is mainly proposed to improve the return shock characteristics of the meltblown fabric Roots fan. During the movement of the primordial volume from the inlet to the exhaust port, high pressure gas is introduced into the primordial volume by means of a pilot hole in the casing or wall panel, so that the internal pressure is gradually equalized or nearly equalized with the pressure at the exhaust port before the primordial volume is connected to the exhaust port. Compared with the conventional compression situation, after the introduction of the pre-inlet gas, the intensity of the return shock at the exhaust port is greatly reduced, and the gaseous noise of the meltblown fabric Roots blower is reduced.
In practice, a portion of the gas is usually diverted back from the exhaust port of the blower and introduced into the housing as high pressure pre-inlet gas. If the high temperature gas from the exhaust port is cooled and then introduced into the primitive volume, it not only slows down the return shock at the exhaust port, but also reduces the exhaust temperature of the blower, and this method of reducing the exhaust temperature is called countercurrent cooling.
