Reasons for overpressure of Roots blower
The cause of overpressure in Roots blowers is usually not a production issue, but may be due to various external factors or improper operation. Here are some common causes of overpressure in Roots blowers:
1. Fan model too large: If the selected Roots blower model is too large and the airflow is too strong, it may exceed the actual needs of the system, resulting in fan overpressure and suffocation. At this point, it is possible to consider installing a vent valve to release some of the air volume, in order to reduce airflow and resistance.
2. Improper valve operation: When using a Roots blower, if the opening and closing of the valve are not carried out according to the operating procedures, such as closing the valve during the operation of the blower, it will cause a sudden increase in pressure. Similarly, if the valve is turned upside down or in the opposite direction, it can also cause an increase in pressure.
3. Rising water level: When Roots blowers are used in the water treatment industry, if the sewage water level suddenly rises, the pipeline resistance will increase accordingly, causing the equipment to hold its breath and the fan pressure to suddenly rise and exceed the pressure.
4. Blockage of aeration holes or plates: In aquaculture or wastewater treatment applications, if the aeration holes or plates of Roots blowers are blocked by sludge, it can cause overpressure and suffocation of the blower. At this point, it is necessary to clean or replace the aeration tube or disc.
5. Pipeline blockage: If the pipeline of the Roots blower is old and lacks maintenance, it may cause dirt blockage, leading to pressure rise. Therefore, regular cleaning and maintenance of pipelines are necessary.
6. Improper start-up method: Roots blower requires no-load start-up. If negative pressure start-up is used due to operational errors, it may cause overpressure in the blower and potentially lead to other malfunctions. The correct starting method should be to start with no load and slowly close the vent valve.
In summary, there are various reasons for the overpressure of Roots blowers, which may involve equipment selection, operation methods, working environment, and other aspects. Therefore, when using Roots blowers, it is necessary to strictly follow the operating procedures and regularly maintain and inspect the equipment to ensure its normal operation and extend its service life.
