International Journal of Agricultural Engineering

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Performance Evaluation of Flow Through Paddy Thresher


Affiliations
1 Department Farm Machinery and Power Engineering, Shriram College of Agriculture Engineering (JNKVV) Paniv, Solapur (M.S.), India
2 Central Farm Machinery Training Testing Institute, Budni (M.P.), India
     

   Subscribe/Renew Journal


Performance tests were conducted on the Research-Cum-Instructional farm of College of Agriculture Engineering, JNKVV Jabalpur in 2012. The performance and evaluation of flow through thresher was done at four feed rate selected considering two feed rate within specified limit and other two beneath the specified limit on basis of manufacturer rated input capacity i.e. 400kg/h. The thresher was driven with 7.5 hp electric motor for conducting the experiment. The crop used for study was Mahamaya variety which was easily available in JNKVV Jabalpur. The threshing material was stacked in four heaps of 375, 400, 425 and 450 kg gross weights (Neeraj, 1985). The threshing was conducted for one hour duration for each feed rate (kg/h). A flow through paddy thresher was evaluated in terms of threshing efficiency, cleaning efficiency, per cent unthreshed, broken, blown grain delivered from thresher as well as sieve overflow (%), sieve underflow (%) and energy consumption (KWh) to optimize the capacity of thresher (Kamble and Panwar, 1985). Threshing efficiency of 375 feed rates was maximumi.e. 98.3 per cent, while 98, 96.8 and 96 per cent obtained at 375, 425 and 450 feed rate, respectively. Cleaning efficiencies of 375 feed rate was maximumi.e. 97.1 per cent while at 375, 400, 425 and 450 feed rate were found 96.9, 95.8, and 99.6 per cent, respectively. Maximum percentage of unthreshed grain obtained at 425 and 450 kg feed rate were 3.14 and 3.36, respectively. Out of four feed rate the minimum percentage of unthreshed grain obtained 1.63 and 1.97 at 375 and 400 feed rate, respectively. Percentage of broken grain at 375, 400, 425 and 450 feed rates were 1, 0.8, 0.7 and 0.7, respectively. Blown grain percentage at 450, 375,400 and 425 feed rate were 3.45, 2.66 2.25 and 2.06, respectively. The cylinder speed for four feed rates 929,930,901 and 878 rpm while blower speed 2369, 2368, 2368 and 2368 rpm and straw walker strokes varies from 180, 178, 166 and 145 no/min, respectively. Optimum capacity of thresher may be taken at 400 kg/h feed which meets the recommandation of the manufacturer (Klein and Harmond, 1966).

Keywords

Thresher, Paddy, Threshing Performance, Power Requirement, Safety.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Agha (2004).Grain losses of wheat as affected by threshing timings. Agril. Biol. J., 6 (3) : 6.

  • Alizadeh, M.R. and Khodabakhshipour, M. (2010).Effect of threshing drum speed and crop moisture content on paddy grain damage in axial-flow thresher. J. Agronomic.,43 (4):144.

  • Alizadeh, M.R. and Allameh, A. (2011). Threshing force of paddy as affected by loading manner and grain position on the panicle. J. Res. Agric. Engg., 57(1): 8-12.

  • Bhadiyadra, B.K. and Joshi, H.C. (1974). Design and development of sunflower thresher. Thesis, B. Tech Agricultural Engineering, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand (India).

  • BIS (2002). Power thresher safety requirements.

  • Buchanan, J.C. and Jonson, W.H. (1964). Functional characteristics and analysis of a centrifugal threshing and parating mechanism. Trans. of ASAE, 7 (4) : 460-463.

  • Chhabra, S.D. (1975). Studies on threshing of paddy and wheat by axial flow thresher.Thesis, M. Tech Agricultural Engineering, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand (India).

  • Chhabra, S.D. and Singh, K.N. (1977). Studied on effect of cylinder speed and peg spacing of axial flow thresher on wheat threshing. Agril. Engg. J., 14 (4) : 141-144.

  • Chukwa, O. (2008). Performance evaluation of locally manufactured rice thresher in niger state. Engg. Appl. Sci. J., 3 (7) : 606-607.

  • Cooper, G.F. and Neel, A.E. (1978). Performance testing of combine in lab. Agric. Engg., 397-399.

  • Delong, H.H. and Schwantes, A.J. (1942).Mechanical injury in threshing barley. Agric. Engg. ASAE, 23(1) 45-51.

  • Dilday, R. H. (1987). Influence of thresher cylinder speed and grain moisture at harvest on milling yield of rice, J. Arkansas Academy of Sci.,41 (12) : 36-37.

  • Engr, C.O.O. (2011). Simulation and optimization modeling of performance of a cereal thresher. Internat. J. Engg. &Technol. JENS. ,11(3):143.

  • Ezzatollah, A., Gillandeh, Y.A. and Abbasi, S. (2009). Study of performance parameters of threshing unit in a single plant thresher. Agric. &Biological Sci. J., 4 (2) : 92-96.

  • IS (1985). Test code for power thresher for cereals.

  • IS, test code for cost estimation.

  • Kamble, H.G. and Panwar, J.S. (1984). Studies on machine crop variables for threshing of moong. J. Agric. Engg., 21(4): 1-7.

  • Kamble, H.G. and Panwar, J.S. (1985).Effect of machine crop variables on threshing of pea. J. Agric. Engg., 22 (4): 11-18.

  • Kamble, H.G. and Panwar, J.S. (1988).Threshing parameters of pigen pea. Paper presented at XXIV ISAE Convention held at Punjabrao KrishiVidyapeeth, Akola on January 21-23.

  • Kashyap, M.M. and Pathak, B.S. (1976).Effect of air stream depth on air velocity requirement for winnowing operation. J. Agric. Engg., 13 (4) : 172-176.

  • Lamp. B.J. Jr. and Buckel, W.F. (1960).Centrifugal threshing of small grains. Trans. of ASAE, 3 (2): 24-28.

  • Mahmoud, M. A. Moheb, M. A. E. and Mahmoud, K.H. A. K. (2007). Development of feeding device in aturkish threshing machine. Misr J. Ag. Engg., 24 (2) : 235-258.

  • Mehta, M.L. and Sharma, V.K. (1985). Studies on threshing system of chaff-cutter type thresher. J. Res. PAU, 22(4): 735-741.

  • Nag, P. and Nag, A. (2004). Drudgery and injuries in Indian agricultural.National Institute of Industrial Health, 42:149-162.

  • Neeraj (1985). Performance evaluation of pigeonpea threshing methods.Thesis, M. Tech Agricultural Engineering, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand (India).

  • Prasanna, P.H.S.N. Gunaratne, L.H.P. and Withana, W.D.R.S. (2004). Compare economic analysis of paddy threshing methods. Sri Lankan J. Agric. Econ., 6(1):12-15.

  • Rajesh, K. N. (2010). Effect of crop and machine parameters on performance of paddy thresher, Agric. Engg., 34 (1): 30-32.

  • Singh, Bachchan (1975). Environmental effects on navy bean field drying and harvesting. Ph.D. Thesis, Michigan State University, East Lansing.

  • Singh, K.N. (1977). System analysis of soybean threshing methods.Thesis, M. Tech Agricultural Engineering, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand (India).

  • Singh, K.N. and Joshi, H.C. (1977).Design and development of rice culture machinery for different power sources. Progress report for ad-hoc I.C.A.R. research project. Agricultural Engineering, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand (India).

  • Singh, K.N. and Singh, B. (1981). Effect of crop and machine parameters on threshing effectiveness and seed quality of soybean. J. Agric. Engg. Res., 26 (4) : 349-355.

  • Ukatu, A.C. (2006). modified threshing unit for soyabean. Citation Biosystems Engineering, 95 (3) : 371-377.


Abstract Views: 315

PDF Views: 0




  • Performance Evaluation of Flow Through Paddy Thresher

Abstract Views: 315  |  PDF Views: 0

Authors

Arun Waghmode
Department Farm Machinery and Power Engineering, Shriram College of Agriculture Engineering (JNKVV) Paniv, Solapur (M.S.), India
Rajneesh Patel
Central Farm Machinery Training Testing Institute, Budni (M.P.), India

Abstract


Performance tests were conducted on the Research-Cum-Instructional farm of College of Agriculture Engineering, JNKVV Jabalpur in 2012. The performance and evaluation of flow through thresher was done at four feed rate selected considering two feed rate within specified limit and other two beneath the specified limit on basis of manufacturer rated input capacity i.e. 400kg/h. The thresher was driven with 7.5 hp electric motor for conducting the experiment. The crop used for study was Mahamaya variety which was easily available in JNKVV Jabalpur. The threshing material was stacked in four heaps of 375, 400, 425 and 450 kg gross weights (Neeraj, 1985). The threshing was conducted for one hour duration for each feed rate (kg/h). A flow through paddy thresher was evaluated in terms of threshing efficiency, cleaning efficiency, per cent unthreshed, broken, blown grain delivered from thresher as well as sieve overflow (%), sieve underflow (%) and energy consumption (KWh) to optimize the capacity of thresher (Kamble and Panwar, 1985). Threshing efficiency of 375 feed rates was maximumi.e. 98.3 per cent, while 98, 96.8 and 96 per cent obtained at 375, 425 and 450 feed rate, respectively. Cleaning efficiencies of 375 feed rate was maximumi.e. 97.1 per cent while at 375, 400, 425 and 450 feed rate were found 96.9, 95.8, and 99.6 per cent, respectively. Maximum percentage of unthreshed grain obtained at 425 and 450 kg feed rate were 3.14 and 3.36, respectively. Out of four feed rate the minimum percentage of unthreshed grain obtained 1.63 and 1.97 at 375 and 400 feed rate, respectively. Percentage of broken grain at 375, 400, 425 and 450 feed rates were 1, 0.8, 0.7 and 0.7, respectively. Blown grain percentage at 450, 375,400 and 425 feed rate were 3.45, 2.66 2.25 and 2.06, respectively. The cylinder speed for four feed rates 929,930,901 and 878 rpm while blower speed 2369, 2368, 2368 and 2368 rpm and straw walker strokes varies from 180, 178, 166 and 145 no/min, respectively. Optimum capacity of thresher may be taken at 400 kg/h feed which meets the recommandation of the manufacturer (Klein and Harmond, 1966).

Keywords


Thresher, Paddy, Threshing Performance, Power Requirement, Safety.

References