Electromagnetic Vibratory Feeders

Electromagnetic Vibratory Feeders

Electromagnetic vibratory feeders offer several advantages over electromechanical, such as better handling of free flowing materials, extremely accurate feed rate controls as well as little to no maintenance or down time due to the lack of moving parts such as motors, chains and eccentric weights. Often utilized in the pharmaceutical, glass, food and chemical processing, steel, plastics, rubber and fertilizer industries, electromagnetic vibratory feeders are particularly useful for industries that involve continuous processes. With the ability to handle slightly wet, heated, dusty, lumpy and abrasive materials, electromagnetic vibratory feeders are used in applications such as batching, weighing, packaging, blending, sprinkling, proportioning and storage.

Typically consisting of a tray that is constructed from steel and an enclosed body that houses either single or double electromagnetic drives, electromagnetic vibratory feeders can either be floor or suspension mounted. A mounting bracket is used to attach a tray to the top of the electromagnetic drive unit, which is connected to the mounting bracket by a set of springs. The tray then vibrates when the electromagnetic coil is energized and the vibrations set the materials in horizontal motion. A control panel allows for automated control of the amplitude of the vibrations, which provides control of the flow of materials. As a result, electromagnetic vibratory feeders provide free, uniform, smooth volumetric material flow. Additional features of electromagnetic vibratory feeders can include the addition of a wear resistant plate in the tray for better handling of abrasive materials as well as increased dust prevention, although dust is generally not an issue because of the typically enclosed electromagnetic drive housing. In addition, a screen can be attached to the feeder’s tray added screening capabilities.