Roots blower is a displacement fan, and the air volume delivered is proportional to the number of revolutions. Two impellers suck and exhaust three times every time the three blade impeller rotates. Compared with the two blade type, the gas pulsation is small, the vibration is small, and the noise is low. There is always a small gap between the impellers on the two shafts of the fan and the hole surface in the elliptical housing, between the impeller end face and the front and rear end covers of the fan, and between the fan impellers. Under the drive of the synchronous gear, the air is transported from the fan inlet to the exhaust side along the inner wall of the housing. The fan cavity does not need lubricating oil, has simple structure, smooth operation, stable performance, and is suitable for many purposes, and has been used in a wide range of fields.
The working principle of Roots blower is that when the motor drives the driving shaft to rotate through the coupling or pulley, the gear installed on the driving wheel drives the gear on the driven wheel to rotate synchronously in the opposite direction, so that the engaged rotor rotates with each other, so that the casing and rotor form a space, and the gas enters the space from the air inlet. At this time, the gas will be compressed and squeezed out of the gas outlet by the rotor, while the other rotor will turn and form a new space with the other side of the casing at the relative position of the first rotor at the beginning of compression, and the new gas will enter this space again and be squeezed out, so as to achieve the purpose of blowing continuously.
Due to the adoption of the three blade rotor structure and the reasonable structure at the inlet and outlet of the housing, the fan has low vibration and noise. The impeller and shaft are designed as a whole, so the impeller is not worn, and the fan performance will remain unchanged, so that it can operate continuously for a long time. In addition, the fan has large volume utilization rate, high volume efficiency, compact structure and flexible installation mode. After more reasonable selection of bearings, the service life of each bearing can be uniform, thus extending the service life of the fan. The fan oil seal can be made of fluororubber, which can resist high temperature, wear and prolong service life.
Precautions for removal of Roots blower gear:
Different roots blowers have different structural forms and different disassembly methods. However, before disassembling roots blowers, the following points should be noted:
1. Before disassembly, the assembly clearance between the disassembled parts shall be measured, and the assembly positions of key components, such as the synchronous gear of Roots blower, shall be recorded to avoid errors during reassembly.
2. The removed joint surface mat and adjusting shim shall be kept properly, their assembly position shall be recorded, and their thickness shall be measured.
3. For some components with high assembly accuracy, such as the wheel and gear ring of the synchronous gear of the blower, if the gear ring is not found damaged, do not easily remove the bolt to drive out the pin, because this assembly accuracy directly affects the clearance of various parts of Roots blower.
4. For different parts, proper tools should be selected to disassemble them so as not to damage the parts, affect the assembly quality, or even cause the Roots blower to fail to operate normally.
The difficulty in removing the gear of Roots blower lies in the synchronous gear, which is meshed by straight teeth. The driving gear is driven out by hydraulic puller, and the driven gear is driven out by its own 6 M20 bolt holes plus ejector rod. The bearing pedestal shall be ejected by the ejector rod. Pay attention to the uniform force of the ejector rod, otherwise the bearing pedestal will be damaged. The bearing pedestal shall be disassembled before installation, and then disassembled before installation. Pay attention to the clearance of each part.
I believe that after reading the above contents, you should also have an understanding of the problems that need attention in the removal of Roots blower gear. I hope it will be helpful to you.
Text label: Roots blower
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