Dry chemical feeders are used for many purposes other than fluoridation in a water treatment plant. The popular Eagle Microsystems VF-100 Volumetric Feeder is one of the most popular, providing accuracy, reliability, long life and durability. It also offers less maintenance, as no lubrication, greasing or oiling is required. There are also no belts, gears, sprockets or chains to maintain.
VF-100 Volumetric Feeders use a direct-drive, variable speed, TENV DC gear motor for simple, reliable, dependable operation. No special provisions are required when feeding potentially incendive chemicals such as carbon.
“The VF-100 typically finds its home in the water treatment industry feeding dry chemicals like lime, carbon, fluoride, soda ash and others,” says Jamie Ball, sales/marketing for Eagle Microsystems. “It can also be purposed to operate as a dry polymer system.”
Feed rates from 0.04 to 17 cubic feet per hour are further controlled by varying the speed of the motor using a state-of-the-art electronic SCR speed control, resulting in 2% or better accuracy with free flowing materials. A 30-1 turndown provides a wide range of speeds for the selected drive, while maintaining required torque throughout the operating/feed range. Should there ever be a clog of obstruction, the current limiting circuitry will turn off the unit before any damage occurs.
“Oftentimes we have to tweak certain things on the feeder to make it fit exactly into a customer’s process need, which is something we are more than happy to do,” says Ball. “We customize the feeders when need be to ensure that the end user gets exactly what they are looking for.”
The motor drive is directly linked to the feed screw, resulting in smooth and continuous material flow. It offers local or remote control of feed rate. The controller, housed in a rugged NEMA 4X enclosure, can be mounted on the unit or remotely for more convenient access and control. Ideal for flow pacing, the speed control provides continuous drive control from a remote signal.
“The VF-100 has been in production for over 20 years,” says Ball. “With feedback from end users, we have made changes and added some options that fit into the harsh demands of the water treatment industry. The feeder is simple and rugged, meaning it holds up very well to the harsh demands of the water treatment industry. Plainly put, the VF-100 just works.” 800-780-8636; www.eaglemicrosystems.com
