HEAVY DUTY VIBRATORY FEEDERS HI-VI ELECTROMAGNETIC Eriez’ unique Hi–Vi magnetic drive circuit provides a simple yet powerful solution to difficult material feeding applications. Feed more for less. Up to 20% greater capacity of Eriez Heavy Duty Vibratory Feeders means greater productivity at lower cost. In addition, you get all the features that for years have made Eriez Feeders the leaders in quality and dependability. Electro–Permanent Magnetic Drive The basic simplicity of a drive powered by alternately opposing and attracting magnetic forces assures low maintenance. There are no sliding or rotating parts. Power consumption is low, installation easy. The positive driving force of Eriez units provides stability, control, and unexcelled accuracy. AC Operation No rectifiers are required; feeders are simply wired into AC lines. Simple Controls Compact variable transformer–type controls regulate feeder speed by varying applied voltage. Control is stepless from 0 to 100 % of capacity, with excellent linearity. Almost no heat is generated. SCR controls are available for automated Heavy-duty units for large capacity and difficult material handling operations – now with greater feeding capability. VB-3301Z • Electro-permanent magnet drive • AC Operation • Simple control • Encapsulated coils • Variety of trays • Enclosed drive element • Low power consumption • 3 year warranty • Up to 20% greater feeding capacity than previous models ONLY FROM ERIEZ FEATURES ®

® 2 operation. Single feeders or groups of feeders can be remotely controlled from one station. Controls with solid–state components are available for all units. Encapsulation The coil and magnet in Eriez’ drive unit are encapsulated in epoxy, eliminating coil movement and thus extending trouble–free coil life. Enclosed Drive Element The completely enclosed drive element, dust and moisture resistant, extends coil life, makes external cleaning easier. Special enclosures are available for dusty locations where Class II Group G equipment is normally used. High Temperature Units Standard units operate...

® 12 HOPPER DESIGN If you plan to build a new hopper or modify an existing one for installation with an Eriez vibratory feeder or screen, its design should adhere to certain guidelines in order to obtain the rated capacity of the feeder, achieve the required discharge or delivery rate, prevent bridging, arching or ratholing. Along with the hopper design, flow velocity (v) is dependent on material characteristics such as particle size, size distribution and moisture content. Rated capacities require ideal conditions. IMPORTANCE OF THE TRANSITION SECTION A hopper’s transition section - the part...

® 14 GRIZZLIES AND SPECIAL TRAYS Vibratory feeders with grizzly trays are used for a variety of scalping or coarse screening operations. Screened trays provide even greater control in separation by size, dedusting or dewatering. On all types of trays, the advantages of gentle material handling and accurate control of feed rates are retained. Eriez’ long experience in designing special trays for special applications, plus computerization of vibratory feeder variables, means that unusual requirements can be met quickly and economically. Totally enclosed trays are used to protect the product, or...

® 15 Vibratory sand classifier is used in conjunction with wood fired boiler, to reclaim unburned wood for recirculation through boiler. Screens are used to sift out ash and sand. Screening feeders take many forms, from removing fines to separating plastic parts as shown here. The tray on this feeder is slotted at an angle to spread material evenly over a conveyor belt which will be installed at right angles to the tray. A water jacket cools this tubular tray used to feed cullet into a furnace. Vibratory drives can be produced in the overhead position, and tray liners can be electrically heated...

VIBRATORY CONVEYORS Multiple drive units, mounted either under or over a single tray, extend the advantages of vibratory feeding to conveying. Variable transformer controls give precise control of feed rates, installation is simple and maintenance is low. Either open or closed trays are available in a variety of widths, with intake or discharge openings as required. Lengths up to 65 feet (20 m) can be provided. Web Site: http://www.eriez.com e-mail: [email protected] Telephone 814/835-6000 • 800/345-4946 • Fax 814/838-4960 • International Fax 814/833-3348 HEADQUARTERS: 2200 Asbury Road, P.O. Box...