MATERIALS HANDLING: Compact Deduster targets Injection Molding

Redesigned deduster developed specifically for injection molding and more.

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The patent-pending C-20 DeDuster from Pelletron, Lancaster, Penn., is lightweight (20 lb) in construction, with a low height (9.5 inches). Pelletron says in addition to providing excellent cleaning and dedusting performance in a small footprint, the C-20 is economical. This technology and others will be featured at the company’s NPE 2015 (Orlando, March 23-27) booth W3383.

Requiring only 9.5 inches of space between the hopper loader and inlet hopper of an injection molding machine for installation, the stainless steel constructed C-20 operates on 110 or 220V power and only consumes 2-3 cubic ft/min of compressed air at 20-30 psi pressure.

Pelletron notes that its C-20 DeDuster  is designed for a nominal product flow rate of 50 lb/hr at a bulk density of 30 lb/cu ft. Flow rates up to 70 lb/hr are possible for products with higher bulk densities. 

The C-20’s design builds upon the features of Pelltron’s long-running mini-DeDuster  Series. The product inlet’s integrated agitator reduces “bridging”, and the Venturi design maximizes dust removal performance while minimizing carryover of good product into the dust collector. It operates with compressed air supplied directly from plant air supply instead of from a separate fan.

Inside the unit, the compressed air is split into two streams for optimal removal of dust and streamers, while an ionizer releases the electrostatic bond between the pellets and the dust. The cleaning air blows the removed fines and streamers into two mini-cyclones, which separate them from the air.

The separated contaminants are then collected in a clear dust collection box, while the cleaned air is filtered and released to the atmosphere. For creation of a negative pressure in the entire device, outside air is pulled in through a filter-protected opening. Removing dust and streamers prevents the creation of black or weak spots in finished products and can help molders reduce scrap rates.

Large DeDuster Adds Automated Inlets
Pelletron will also showcase its XP-series DeDuster with automated inlet device at NPE 2015. The XP-360 design, which is also patent pending, was developed for cleaning large batches of plastics pellets at their manufacturing sites with outputs from 40,000 to 330,000 lb/hr at bagging, truck, and railcar loading.

Eliminating rotary valves that are normally used for feeding product into the DeDuster, the XP-360’s automated inlet deflectors move to adjust the product flow to the desired flow rate, evenly distributing pellets over the wash decks of the DeDuster with the ability to completely shut down product flow. Pneumatic actuators with integrated positioners move the inlet deflectors to any position based on a control signal from the plant DCS.

Finally, the company will also feature its Pellcon3 “gentle conveying process” product in Orlando. Designed for large conveying capacities at compounders or resin manufacturers, the Pellcon3 consists of three components: Strandphase, Pellbow  and DeDuster. Pelletron says combination results in gentle conveying, low attrition rates for the material and clean pellets.