Why is the pressure of Roots blower high and the flow rate large? 

 Roots blower is a positive displacement blower, through a pair of rotors' meshing 'to separate the air intake, the rotor is driven by a pair of synchronous gears, do the opposite direction, the inhaled gas without internal compression from the suction port to the exhaust port. There is a gap between the rotors, and they do not contact each other. The moment the gas reaches the exhaust port, it is pressurized by the reflux of the high-pressure gas on the exhaust side, so as to complete the gas transmission. Roots blower is a positive displacement fan, the amount of air transported is proportional to the number of revolutions, and the three-blade impeller is used by two impellers for three times for each rotation. Compared with the two-blade type, the gas pulsation is small, the vibration is small, and the noise is low. The impeller on the two axes of the fan and the inner hole surface of the oval shell, the end face of the impeller and the end cover of the front and back of the fan and the fan impeller are always maintained a small gap, and the wind driven by the synchronous gear is transported from the fan inlet along the inner wall of the shell to the discharge side. Fan cavity does not need lubricating oil, simple structure, smooth operation, stable performance, suitable for a variety of purposes, has been used in a wide range of fields. Roots blower is composed of five parts: casing, wall panel, impeller, fuel tank and muffler. Wall plate: mainly used to connect the casing and the impeller, and support the rotation of the impeller, and play the end seal effect. Impeller: is the rotating part of Roots blower, divided into two blades and three blades, but because the three blades than the two blades of the output gas pulsation is smaller, less noise, more stable operation and many other advantages, has gradually replaced the two blades of Roots blower. Oil tank: mainly used to store lubricating oil used to lubricate gears and bearings. Muffler: used to reduce the noise caused by air pulsation in and out of Roots blower. The working principle of Roots blower is that when the motor drives the drive shaft to rotate through the coupling or belt wheel, the gear installed on the drive wheel drives the gear on the drive wheel, rotating synchronously in the opposite direction, so that the meshing rotor rotates with each other, so that the housing and the rotor form a space, and the gas enters the space from the air intake. At this time, the gas will be compressed and squeezed out of the air port by the rotor, and the other rotor will turn to the relative position of the first rotor at the beginning of compression, forming a new space with the other side of the housing, and the new gas will enter this space and be squeezed out, so that the continuous movement can achieve the purpose of blowing. Because of the three-blade rotor structure and the reasonable structure of the inlet and outlet in the shell, the fan has low vibration and low noise. The impeller and shaft are integrated design structure, the impeller has no wear, and the fan performance will be durable and unchanged, so that it can run continuously for a long time. In addition, the volume utilization rate of the fan is large, the volume efficiency is high, and the structure is compact, the installation method is flexible and changeable. After the more reasonable selection of bearings, the service life of each bearing can be uniform, thus extending the life of the fan. The fan oil seal can be made of fluorine rubber material, which can resist high temperature, wear resistance and extend service life. Roots blower is more and more widely used, most industries are in use, the following is a brief introduction to its main application areas. Applications in the water treatment industry: Roots blower is used in the water treatment industry to provide oxygen for biochemical reactions. In the use of sewage treatment, Roots blower can supply a quantity of oxygen according to the different water depth and the different tonnage of treated water, and promote the oxidation and differentiation of microorganisms. Application of desulfurization oxidation: desulfurization of soot gas, desulfurization is based on chemical methods to operate. In this chemical reaction process, sulfur dioxide becomes a crystal crystallization, the process requires oxygen oxidation effect, Roots blower will be used to supply enough oxygen to ensure the efficient operation of chemical reaction. Dust material transport: Roots blower itself can not transport gas containing medium, only suitable for transporting clean air, in the powder transport, requires the transport of non-stick powder, mainly to supply the effect of power kinetic energy, the required delivery of powder to the designated place. Application of aquaculture: Roots blower is mostly used in industrial aquaculture, aeration tray is placed at the bottom of the pool, after the Roots blower is connected, oxygen will be continuously supplied to the pool, improving the oxygen content of the pool. Use a blower to pump air into the feeding tank, add the dissolved content of oxygen in the water, accelerate the oxidation differentiation of some harmful substances, promote water purification, and promote the growth of fish aquaculture.