As dust discharges into your dust collector’s hopper, ensuring you have the right removal method is going to help minimize problems that could arise due to dust build up.
A hopper is designed to be temporary storage for your dust discharge. If you have excessive dust build-up in your hopper it can block off your dust collector air flow and cause a loss of suction throughout your dust collection system. Excessive dust build-up can also become a hazard because it provides more opportunity for combustible dusts to create a dangerous explosion or fire. With the right dust removal method for your specific application and system, you can avoid these issues.
The best method of dust removal from your hopper will be determined by some of the following components:
- Dust Collector Type – Baghouse, Cartridge Dust Collector
- Dust Characteristics – Hazardous vs. Non-hazardous Dust
- Dust Loading Rates
A simple pipe system funneling dust into an enclosed box, placed underneath your hopper, is one dust removal option available. This system would require your maintenance team to monitor and empty the box once capacity has been reached. Prompt removal of dust build up in your enclosed box will help prevent backup or an overflow of the box itself. This option can be used for dust collector systems with non-hazardous dust characteristics and light dust loads.
Drum or Bag
A removable drum or bag can be a simple and easy solution to collecting and disposing dust. When your drum or bag is filled, maintenance would simply remove it by hand or forklift. Once the dust is emptied, the drum or bag can then be put back into its place. This method of removal is an ideal choice for non-toxic dusts that can be easily handled.
Rotary valves (also known as airlocks, rotary feeders, or airlock feeders) transitions material from a dust collector to a drum or bin. The rotary valve seals a pressurized system against loss of air and pressure. This helps to ensure loss of product during processing is minimized. A rotary valve can be used for applications such as dust collection, pneumatic conveying, mixing, weighing, feeding, and blending. Rotary valves are often used in larger baghouse dust collection systems with over 10,000 CFM airflows.
Screw Conveyor for Baghouse Dust Collectors
A screw conveyor is typically used for large baghouse dust collection systems with heavy dust loads. This method allows dust to be transported away from the collector to a designated disposal area. This system can be ideal for hazardous materials or for materials needed for reuse. Some common industrial applications for a screw conveyor include agriculture, mining and minerals, foundries, wood production, and chemical processing.
To learn more about what to consider when designing and building a new dust collection system, download our dust collector purchasing guide.