Design and Performance Evaluation of a Variable Speed Bucket Elevator

Year 2023, Volume: 4 Issue: 2, 225 - 238, 31.12.2023

Christopher Obineche , Bejoy Otuobi Unanka , Ezechıke Nkechi Udochukwu , Anthony Emeka Akuwudike , Ojiaku Chinwendu Augustina

https://doi.org/10.46592/turkager.1378650

Abstract

The bucket elevator was designed and constructed at the Federal University of Technology Owerri, Imo state, Nigeria. A variable speed bucket elevator with dimensions of 0.3 m by 0.243 m and 0.47 m high with a base stand of 0.47 m high making the total height of 0.9 m was designed, evaluated and tested to determine the throughput capacity of the machine, which gave 0.176 tons h-1 at higher speed of 0.5 m s-1 with optimal efficiency at the centrifugal discharge force of 0.366 N when grain (cowpea) was elevated, and a throughput capacity of 0.109 tons h-1 at a slower speed of 0.4 m s-1 with optimal efficiency of 7.78% at the gravitational discharge force of 0.392 N when small lumpy material was elevated. 0.5 m s-1 and 0.4 m s-1 used for the experiment were obtained from the grooved step pulley with variable diameters, connected to a motor of 0.18 kW (1340 rpm) at the head, with a gear reducer of 189.7 rpm coupled to a vee belt. The result obtained during test running of the prototype model of the bucket elevator conveyor, shows that at variable speed, bucket elevator can convey different materials, which becomes an advantage instead of installing different conveyor while the same can perform the same function with a change in the pulley. This will become advantageous to low-income countries, where resources are meager to purchase different equipment whereas, a well-designed single elevator can perform variably and obtain same outcome.

Keywords

Efficiency, Bucket elevator system, Progression, Variable speed, Nigeria

References

• Bravo R, Pere-Aparicio J and Laursen T (2011). An enhanced energy conserving time stepping algorithm for frictionless particle contacts. International Journal for Numerical Methods in engineering, 85 (11), 1415-1435.
• Dave M (2008). Belt and bucket elevator design guide for a variety of power and granular belt materials Dekker Inc., New York pp 240.
• Gerber B (2008). Bucket elevator for conveyance of granular materials Hawley company limited USA, pp 221.
• Gholami M (2016) Design bucket chain elevator for transporting digging materials in Tohid tunnel. 24th Annual International Conference on Mechanical Engineering-ISME2016- 66673, 26-28, April. Yazd University, Yazd, Iran.
• Khurmi RS and Gupta JK (2004). Theory of Machines. New Delhi, India: Chand S. & Company Ltd.
• Maghirang R, Hearmah Y and Harner J (2006). Effects of grain-receiving system on commingling in a country elevator. Applied Engineering in Agriculture, 22(5): 713-721.
• Yashaswini N, Raju B and Purushottham A (2014). Design and optimisation of bucket elevator true finite element analysis, IPASJ International Journal of Mechanical Engineering, 2(9): 73-78.
• Ogbuagu DH and Okoli CG (2013). What influence does removal of vegetation have on primary productivity of a River?. Central European Journal of Experimental Biology, 2 (2): 5-12.
• Perez-Aparicio JL, Bravo R and Gómez-Hernández JJ (2014). Optimal numerical design of bucket elevators using discontinuous deformation analysis. Granular Matter. 16(4):485-498.
• Sharma SC (2000). Material management and materials handling published by McGraw-Hill company New York.
• Sondalini M (2004). Belt bucket elevator design-second edition Business Industrial Network.
• Snehal P, Sumant P and Jigar P (2012). A Review on Design and Analysis of Bucket Elevator. International Journal of Engineering Research and Applications (IJERA), 2(5), 18-22.
• Taher GA, Howlader Y, Md. Asheke Rabbi, Touqir FA (2014). Automation of Material Handling with Bucket Elevator and belt conveyor. International Journal of Scientific and Research Publications, 4(3), 1-13.
• Wolstencroft D (2005) How steel web elevator belt & SJ buckets enhance the performance of bucket elevators. 4B Braime Components, www.go4b.com, [e-mail]; Hunslet Road, Leeds LS10 1JZ, UK.