International Journal of Agricultural Engineering

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Development of a Marking Nut Desheller


Affiliations
1 Department of Agricultural Engineering, Maharashtra Institute of Technology, Aurangabad (M.S.), India
2 Department of Mechanical Engineering, Marathwada Institute of Technology, Aurangabad (M.S.), India
     

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Marking nut or ‘Semecarpus anacardium L.’is a versatile tree found abundantly in humid regions of world. Its unique physical trait sets it apart from other agricultural produce; no nut has same shape and size there is a tremendous variation in length, width and thickness of nuts. Nut is a double walled shell and between the cellular space of double walls there is a presence of toxic resin called BSL (Bhilawan shell liquid). Present desheller is simple in its operation and is developed focusing its future potential. It comprises of a double acting pneumatic cylinder (32 bore), solenoid valve, a nut placing die, operative tool and air compressor. Nuts are placed in a specific flat position at centre of cylindrical die, this die is drilled in center so that the stroke passes completely through its centre and is positioned just below the stroke of pneumatic cylinder. A tapered tool screwed with cylinder stroke of 50mm and when stroke occurs its cuts through the nuts center and kernel separation is done. It provide 100 per cent protection from splashing of BSL and no human strength for deshelling. Trails were conducted at three different pressures to evaluate performance of machine at 4.8,6.2 and 7.8 kg/cm2 and 300 nuts at 2.38 per cent M.C. (dry basis) were cracked at each pressure. Highest efficiency was observed at 6.2 kg/cm2 and removal of whole kernel was also good. At 6.2 kg/cm2 pressure 86.20 per cent efficiency and 0.68kg/hr capacity were observed. Machine cost with optimum design is approx. 7500INR.

Keywords

Marking Nut, Double Walled Shell, Toxic Resin, Pneumatic Cylinder.
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  • Development of a Marking Nut Desheller

Abstract Views: 285  |  PDF Views: 0

Authors

A. K. Bhardwaj
Department of Agricultural Engineering, Maharashtra Institute of Technology, Aurangabad (M.S.), India
S. R. Patil
Department of Agricultural Engineering, Maharashtra Institute of Technology, Aurangabad (M.S.), India
R. S. Sharma
Department of Mechanical Engineering, Marathwada Institute of Technology, Aurangabad (M.S.), India
V. V. Malwade
Department of Agricultural Engineering, Maharashtra Institute of Technology, Aurangabad (M.S.), India

Abstract


Marking nut or ‘Semecarpus anacardium L.’is a versatile tree found abundantly in humid regions of world. Its unique physical trait sets it apart from other agricultural produce; no nut has same shape and size there is a tremendous variation in length, width and thickness of nuts. Nut is a double walled shell and between the cellular space of double walls there is a presence of toxic resin called BSL (Bhilawan shell liquid). Present desheller is simple in its operation and is developed focusing its future potential. It comprises of a double acting pneumatic cylinder (32 bore), solenoid valve, a nut placing die, operative tool and air compressor. Nuts are placed in a specific flat position at centre of cylindrical die, this die is drilled in center so that the stroke passes completely through its centre and is positioned just below the stroke of pneumatic cylinder. A tapered tool screwed with cylinder stroke of 50mm and when stroke occurs its cuts through the nuts center and kernel separation is done. It provide 100 per cent protection from splashing of BSL and no human strength for deshelling. Trails were conducted at three different pressures to evaluate performance of machine at 4.8,6.2 and 7.8 kg/cm2 and 300 nuts at 2.38 per cent M.C. (dry basis) were cracked at each pressure. Highest efficiency was observed at 6.2 kg/cm2 and removal of whole kernel was also good. At 6.2 kg/cm2 pressure 86.20 per cent efficiency and 0.68kg/hr capacity were observed. Machine cost with optimum design is approx. 7500INR.

Keywords


Marking Nut, Double Walled Shell, Toxic Resin, Pneumatic Cylinder.

References