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Efficient Material Handling Solutions for Agriculture

Explore screw conveyors, bucket elevators, oscillating conveyors, pneumatic conveyors, gravity conveyors, cranes, trucks, and carts for optimal material transport in agricultural settings. Capacity calculations, HP equations, and practical examples included.

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Efficient Material Handling Solutions for Agriculture

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  1. Lecture 20 – Materials Handling(Chpt 8 Henderson/Perry) • Screw Conveyors: Page 213 • Capacity calculation: pg. 214 eqtn. 8.5 • Table 8.3 and 8.4 capacity data and material classification • Equation 8.6 for HP Dr. C. L. Jones Biosystems and Ag. Engineering

  2. Lecture 20 – Materials Handling(Chpt 8 Henderson/Perry) • Bucket elevators • Figure 8.8 page 219 • Centrifugal discharge for small grain • Perfect discharge: low cost, slow moving, low damage required • Continuous-bucket type: heavy duty use such as ores, sand, rocks. Material slides over preceding bucket bottom • Read section in handout. Dr. C. L. Jones Biosystems and Ag. Engineering

  3. Lecture 20 – Materials Handling(Chpt 8 Henderson/Perry) • Bucket elevators • A bucket elevator has 36 buckets similar to the configuration in Fig. 8.10(a) and a lift of 73 ft. Calculate the HP. Dr. C. L. Jones Biosystems and Ag. Engineering

  4. Lecture 20 – Materials Handling(Chpt 8 Henderson/Perry) • Oscillating conveyors (page 223) Dr. C. L. Jones Biosystems and Ag. Engineering

  5. Lecture 20 – Materials Handling(Chpt 8 Henderson/Perry) • Pneumatic conveyors (page 224) • Figure 8.14 • Uses fans, vacuums, and conduits • We will work a problem on Friday for this kind of conveyor Dr. C. L. Jones Biosystems and Ag. Engineering

  6. Lecture 20 – Materials Handling(Chpt 8 Henderson/Perry) • Gravity conveyors • Consist of rollers or wheels set on a level or a slight incline. • Material is moved by hand or by gravity. • Intermittent service • Used as a support aide with external power. Dr. C. L. Jones Biosystems and Ag. Engineering

  7. Lecture 20 – Materials Handling(Chpt 8 Henderson/Perry) • Cranes, trucks and carts • Cranes are not used extensively in ag services but are used largely for construction • Trucks, fork lifts and carts: • Used in warehouses and shipping units • Generally handle large bulky items • Can handle variable location items • Must consider labor efficiency and time/motion studies • Included would be bale spikes and some bale loaders Dr. C. L. Jones Biosystems and Ag. Engineering

  8. Lecture 20 – Materials Handling(Chpt 8 Henderson/Perry) Example: A bucket elevator has buckets similar to the configuration in Fig. 8.10(b). The belt speed is 35 ft/min and there are 52 buckets on the belt. The lift is 92 ft. Calculate the HP. Dr. C. L. Jones Biosystems and Ag. Engineering

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