SEA BIN

Abstract

Sea bin is a project inspired by similar project being done by some of the sailors in Australia that aims to create cleaner oceans, lakes and ponds and eliminate the threats posed, because of the contamination of waste material especially plastic debris at the shores damaging marine ecosystem, throughout the globe. Our project aims to design and manufacture a working prototype of a sea bin that is located in the water at marinas, docks, yacht clubs and commercial ports. In the previous report we discussed about the need for a sea bin, its working mechanism and along with it we presented a scaled down model of our product visually presenting the idea and explaining the working principle of a sea bin. In this report we are focusing on metallurgy and some of the analysis done in order to attain some helpful results before the manufacturing of our product. Few of the major components of a sea bin is its bucket, catch bag, pipes, docking and pump. Stress, strain and deformation analysis are done on the outer housing of the bin that also contains the inner floatable casing and catch bag, to check for the red zones produced because of the stresses and bending moment caused by the motion of water and the weight of the garbage being collected in the bin. We have chosen stainless steel-grade 316 that is capable to withstand the stresses calculated and in addition to that it is non-corrosive and provides resistance in a saline environment and on top of that machining is easier and cheaper than that for the PVCs. Similar analysis was conducted on the pipe connected to the bin on one side and to the dock and pump on the other side providing a flow path for the water being pumped. Stress analysis on the catch bag, that entraps the garbage including plastic debris and tins, was conducted which helped us choose hessian fiber as material for the catch bag that is not only capable to bear the load of garbage and water flow but is also biodegradable.