250 Roots blower is a common positive displacement blower. The following introduces its performance parameters, structural characteristics, application fields, selection points, and maintenance:
1、 Performance parameters
Flow range: usually between 60.7-94.3m3/min, with specific values varying with pressure. For example, under a pressure of 9.8kPa, the flow rate can reach 94.3m3/min; At a pressure of 58.8kPa, the flow rate is approximately 60.7m3/min.
Pressure range: generally 9.8kPa -58.8kPa, some models can be higher, suitable for scenarios with various pressure requirements.
Speed range: Common speeds include 990, 1170, 1250rpm, etc., which can be adjusted according to actual needs.
Motor power: The power of different models of motors varies, commonly including 37kW, 55kW, etc. The power directly affects the operating efficiency and energy consumption of the fan.
Structural Features
Three bladed rotor design: Adopting a three bladed rotor structure, compared to a two bladed rotor, it has smaller air pulsation, lower noise, smoother operation, less vibration, compact structure, and flexible installation methods.
Good sealing: The gaps between the impeller and the casing, impeller and side plate, and impeller to impeller ensure good sealing and reduce gas leakage.
No lubrication required: The fan chamber does not require lubricating oil, avoiding contamination of the conveying gas by lubricating oil, and is suitable for conveying clean air or special gases.
3、 Application Fields
Wastewater treatment: used in aeration tanks to provide sufficient oxygen for microorganisms, promote the decomposition of organic matter, and improve wastewater treatment efficiency.
Aquaculture: Adding oxygen to the aquaculture water, ensuring the survival needs of aquatic organisms, and increasing aquaculture density and yield.
Pneumatic conveying: capable of conveying powdered and granular materials such as cement, flour, plastic pellets, grains, etc., widely used in industries such as chemical, building materials, and grain.
Combustion furnace combustion assistance: providing air for the combustion furnace, promoting the full combustion of fuel, and improving combustion efficiency.
Vacuum adsorption: can be used in industries such as vacuum packaging, printing, and papermaking to provide a stable vacuum source.
4、 Key selection points
Clarify process parameters: Determine the required air volume, pressure, and other parameters based on actual working conditions to ensure that the selected fan can meet production needs.
Considering the characteristics of the medium: If the transported gas has corrosive, flammable, and explosive properties, it is necessary to choose a Roots blower with corresponding materials and sealing methods.
Pay attention to energy consumption indicators: On the premise of meeting process requirements, choose fan models with lower energy consumption to reduce operating costs.
Understanding the manufacturer's reputation: Choosing a well-known and reputable manufacturer ensures better product quality and after-sales service.
5、 Maintenance and upkeep
Regular inspection: Regularly check the fastening, lubrication, belt tension, and pulley misalignment of the fan to ensure its normal operation.
Cleaning and maintenance: Keep the interior of the fan clean to prevent dust, debris, etc. from entering the fan and affecting its performance and lifespan.
Timely maintenance: If any abnormal sound, excessive vibration, or high temperature is found in the fan, it should be stopped and inspected in a timely manner to identify the cause and carry out maintenance.
