Selecting the right air source is very important in a pneumatic conveying system. Some systems use air compressors on site, others use roots blowers. Both were originally chosen as the air source for their own strengths, but they have different merits. Pneumatic conveying can be divided into dilute-phase conveying and dense-phase high-pressure conveying. As a rule, a roots blower is used for low pressure and an air compressor for high pressure.
Features of the pneumatic conveying roots blower
1. Smooth inlet and exhaust. With a fixed helical profile (helix angle above 20), the intake and exhaust passages open gradually as the rotor rotates, so the inlet/exhaust pulsation is slight and the operating sound is low. The specially shaped rotor keeps the gap between rotors, further improving power.
2. Three-lobe straight rotors with small axial displacement contact, ensuring rotor clearance is maintained.
3. Precision CNC-machined rotors with no functional error between the blowers; the rotors are balanced during manufacturing, so the machine runs without vibration.
4. High-grade gears from the market drive system effectively extend service life and reduce noise, completely eliminating bad gear interference with the product.
5. Clean oil-free output air. The design structure keeps the output air clean without any oil or dust; the box interior needs no oil lubrication, and bearing/gear oil never mixes into the box interior.
Why a roots blower beats an air compressor for dilute-phase conveying
Choosing the air source correctly lets you complete much more work. In normal use, conveying powder with an air compressor wastes energy: you have to consider pressure and flow, so the equipment not only fails to achieve energy-saving operation but also needs an unreasonable amount of supporting labor, and it takes up a large floor area. Electric or diesel engines drive the compressor through a V-belt, changing the crankshaft structure and rotation direction to make the piston reciprocate. Although an air compressor can run for low-pressure conveying, it may not finish the expected conveying output well. Instead, a roots blower - a low-pressure continuous conveying air source used across different professional fields through proper engineering training - solves this part of the problem perfectly.
Jiangyin Zhongxin Machinery - one-stop aeration solutions. Contact: +86 180 1341 8091 / +86 180 1341 8097.
