Working with Hoppers
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Syntron® Working with Hoppers

Syntron® Working with Hoppers Syntron® Vibratory Feeder Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Feeder Hopper Transitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recommended Hopper Design and Feeder Selection . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Ideal Hopper (T = 0.6 x H) . . . . . . . . . . . . . . ....

Proven Engineered Products – Complete Material Handling Solutions Two powerful industry leading brands—Link-Belt® and Syntron®— have come together under a new company name, Syntron Material Handling, LLC, for one goal – better engineered products. Although we may have a new name, we still have the same dedicated employees and industry leading engineered products that make us a market leader. Established in May 2014, Syntron Material Handling (SMH) was built out of the legacies of Link-Belt Company and Syntron Company, formerly owned by FMC Technologies. Today, our 300 skilled employees have...

Syntron® Vibratory Feeder Models Light-Duty Feeders Heavy-Duty Feeders

Feeder Hopper Transitions Material characteristics such as size distribution, shear properties and cohesiveness generally dictate the configuration of feeder transition hoppers. Material flow velocities vary, depending upon material properties, feeder stroke and operating speed. Good transition hopper design optimizes flow rate, allowing the most economical choice of a feeder. Improperly designed transition hoppers will substantially reduce feeder capacities. The IDEAL HOPPER, illustrated below, has a T/H ratio of 0.6 and shows a uniform material flow pattern to the feeder trough. Material...

Recommended Hopper Design and Feeder Selection 1. The hopper rear wall angle must be steep enough to permit material flow. Syntron Material Handling recommends 60° ± 2°. 2. The hopper front wall angle must be just enough to permit material flow. The flow rate on the hopper front wall should be slightly less than the flow rate on the back wall. Syntron Material Handling recommends 55° ± 2°. 3. The throat dimension T for random size material should be a minimum of 2 times the largest particle of material. If the material particles are nearly the same size (near size), T should be a minimum of...

Calculations and Formulas Terms Capacity Discharge Depth Material Density Gate Factor Flow Rate Syntron Material Handling suggests the following values for GF: If material angle of repose > 35°, GF = 1.3 If material angle of repose < 35°, GF = 1.5 *Value of R (ft/min) Electromagnetic Feeders (F Series Models) Electromechanical Feeders (RF or MF Series Models)

Benefits of Ideal Hopper Design: • Uniform Flow Pattern • Maximum Capacity • Maximum Material Velocity • Maximum Material Depth • Optimized Feeder Size • Reduced potential for material build-up at inlet • Reduced potential for spillage at back and sides • Reduced material load on feeder *Active material area required to achieve ideal uniform flow patterns. If less, flow pattern will not be uniform and there will be the potential for excess material loads and reduced capacity. 8

Ideal Hopper Design: • Non-uniform Flow Pattern • Reduced Capacity ~15% • Reduced Material Velocity ~10% • Increased Feeder Size • Potential for material build-up at inlet • Potential for spillage at back and sides • Increased material load on feeder *Active material area required to achieve ideal uniform flow patterns. If less, flow pattern will not be uniform and there will be the potential for excess material loads and reduced capacity. 9

Excess Throat Design: • Non-uniform Flow Pattern • Reduced Capacity > 20% • Reduced Material Velocity > 15% • Increased Feeder Size • Potential for material build-up at inlet • Potential for spillage at back and sides • Increased material load, possible collapsed suspension coil springs

Flat Front Wall and Rear Wall T = 0.6 x H Flat Front and Rear Wall Design: • Non-uniform Flow Pattern • Reduced Capacity > 20% • Reduced Material Velocity > 15% • Increased Feeder Size • Potential for material build-up at inlet • Potential for spillage at back and sides • Increased material load, possible collapsed suspension coil springs • Reduced depth at discharge > 10% For T = H and T > H, all conditions will be compounded. 11

Flat Front Wall T = 0.6 x H Flat Front Wall Design: • Non-uniform Flow Pattern • Reduced Capacity > 20% • Reduced Material Velocity > 15% • Increased Feeder Size • Potential for material build-up at inlet • Potential for spillage at back and sides • Increased material load, possible collapsed suspension coil springs • Reduced depth at discharge > 10% For T = H and T > H, all conditions will be compounded. 12

Flat Rear Wall T = 0.6 x H Flat Rear Wall Design: • Non-uniform Flow Pattern • Reduced Capacity > 20% • Reduced Material Velocity > 15% • Increased Feeder Size • Potential for material build-up at inlet • Potential for spillage at back and sides • Increased material load, possible collapsed suspension coil springs • Reduced depth at discharge > 10% For T = H and T > H, all conditions will be compounded. 13

Vertical Front and Rear Wall T = 0.6 x H Vertical Front & Rear Wall Design: • Non-uniform Flow Pattern • Reduced Capacity > 20% • Reduced Material Velocity > 15% • Increased Feeder Size • Potential for material build-up at inlet • Potential for spillage at back and sides • Increased material load, possible collapsed suspension coil springs • Reduced depth at discharge > 10% For T = H and T > H, all conditions will be compounded. 14