The SERVODAY Air Assist System: Elevating Grinding Performance

The SERVODAY Air Assist System enhances the efficiency and performance of the Tear Drop Hammer Mill by controlling the grinding chamber environment. By aiding in the movement of product through the screen perforations, this system allows for more efficient grinding, resulting in a uniform finished product with reduced heating and minimized dusting around the mill.

Designed to outperform non-assisted systems by 15-40%, air assisted grinding systems offer increased productivity and capacity. A general guideline suggests utilizing 1.25-1.50 CFM/In² of screen area to assist product and control dusting, with a pressure drop across the mill typically ranging from 2-5" W.C., depending on operational conditions.

Several factors must be carefully considered to ensure the effectiveness of the SERVODAY Air Assist System. These include controlling air flow into the mill, establishing clear paths for air and product movement, separating the product from the air stream, and managing the air path within the system.

After passing through the mill, the air must allow entrained fines to settle out before reaching the cyclone or filter system. This necessitates the inclusion of a plenum or settling chamber between the air/product conveyor and the pickup point, designed to reduce velocity and facilitate the settling of fine material.

The plenum's design is crucial for effective air/fines separation. It must be engineered to minimize velocity, ensuring efficient settling of fine material. Larger plenums enhance this separation process, and while there is no upper limit to plenum size, practical considerations dictate an optimal size to maintain efficiency.

Controlling the air path through the mill is essential for the system's functionality. A discharge end seal on the take-away conveyor prevents air from being drawn back through the discharge system, ensuring proper airflow through the hammermill. This seal may range from a simple shroud to a powered rotary airlock, depending on system complexity.

The SERVODAY Air Assist System provides a comprehensive solution for improving mill performance and efficiency. By optimizing air flow, controlling dust, and maximizing productivity, this system ensures seamless operation and consistent results, making it an indispensable component for biomass and wood material processing.

In the SERVODAY Air Assist System, crucial equipment includes the hammermill for grinding biomass and wood materials, the air assist system for enhancing grinding efficiency and dust control, cyclone and bag filter systems for material-air separation, plenum and settling chambers for fines settling, ductings for airflow management, blowers for air circulation, and rotary air lock valves for discharge control.