How to choose the Roots blower

2013/11/17      view:
Are constant flow blower fan , the main parameter is the working air flow, the output pressure with pipes and the load changes, changes very little wind .

Centrifugal blower fan is constant , the main parameter is the work pressure, the output of the wind pipe and load changes, air pressure changed little. When these parameters are destroyed, the consequences more serious, you need to take supplementary measures , such as: additional regulator valve, discharge valve , alarm devices and automatic stopping devices.

Generally large selection centrifugal sewage treatment plants , stand-alone wind capacity, high efficiency , and of course investment is relatively large ;

Generally small sewage treatment plant selection Roots , single smaller air volume , low efficiency point , the investment is relatively small.

Depends on what is the CAST or SBR process if the water level in the case of variable blower plus inverter is the most energy-efficient if it is A / O process if the water level constant , high efficiency centrifugal blower because the centrifuge can only tune by frequency flow can not be adjusted by frequency flow pressure blower (tong1 guo4 bian4 pin2 liu2 liang4) and pressure can be adjusted , so to say , of course it also depends on the process depends on funding the centrifuge Bi Luoci fan expensive.

Fan flow is about 40m3/min are small fan blower fan should be sufficient to significantly above centrifuge 100m3/min city on the edge of its energy on the small flow regardless of price or energy are the Roots more practical.

Roots blower flow , pressure, power is completely different with centrifugal fans , fan flow is generally little change , big variations in pressure , the pressure increases, the shaft power increases ; while the centrifugal fan pressure increases , the shaft power is reduced .

Never approach a small valve with adjustment reduced air volume and pressure , can be installed a vent through the vent to regulate the aeration tank of gas . Why Do NOT adjust small way valve reduces air volume and pressure ? Cause the fan motor temperature too large to burn (yi3 zhi4 shao1) ruined the motor can look at the funding fan manufacturers. Generally taken not install a vent valve to release the gas valves are adjusted if small , then it would make fan motor temperature too large to burn the motor.