Experience in using Roots blowers

An excessive current indicates that the load is too high; check whether the pipelines are blocked or if the outlet pressure exceeds the design specifications. As a workaround, disconnect the belt and manually rotate the fan to check how the impeller is functioning. Fans driven by belts usually have three blades, and such fans don’t tend to develop serious problems. Second, “we currently don’t have enough blowers available” – what exactly does this mean? Rotary vane blowers have specific design parameters, mainly regarding wind pressure. It’s possible to use two blowers in parallel, as long as the wind pressure doesn’t exceed the design limits, but this isn’t very cost-effective. It’s better to replace one of the blowers with one that meets your requirements. It’s advisable to consult the manufacturer. We use five Zhanggu blowers, each equipped with motors of up to 110 KW, and they perform very well

In practice, for overcurrent issues, the first thing to check is whether the outlet pipe has excessive right angles, as this increases resistance and thereby exacerbates the pressure difference between the inlet and outlet； Next, check whether there are any abnormal sounds; if so, it is advisable to invite the manufacturer to come and inspect the rotor clearance as well as the interior of the air chamber for any abnormalities. These are generally the two items; otherwise, there is a problem at the stage of selection or design. They can be connected in parallel.

What was said on the second floor is correct; first, it’s necessary to check the outlet pressure to see if it exceeds the maximum pressure allowed by the fan. It could also be a problem with the fan itself: 1. Check the tension of the belt to see if it is slipping. 2. Check the temperature and vibration of the gearbox. 3. Check the impeller clearance.

Check if the pipeline is blocked； They can be used in parallel as long as the pressure meets the requirements.