EFFECT OF DESIGN PARAMETERS ON SEPARATION OF GRAIN IN THRESHER TO MINIMIZE SEPARATION LOSS OF COMBINE

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MIRZAZADEH A.; ABDOLLAHPOUR SH.; MOGHADAM M.

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Journal: Journal of Agricultural Science and Sustainable Production Year:2011 | Volume:21/2 | Issue:3 Page(s): 1-11

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Title

EFFECT OF DESIGN PARAMETERS ON SEPARATION OF GRAIN IN THRESHER TO MINIMIZE SEPARATION LOSS OF COMBINE

Author(s)

MIRZAZADEH A. | ABDOLLAHPOUR SH. | MOGHADAM M. | Issue Writer Certificate

Keywords

COMBINEQ4

CYLINDER SPEEDQ4

FEED RATEQ4

STEM HEIGHTQ4

SEPARATIONQ4

THRESHING CLEARANCE RATIOQ4

MODELINGQ4

Abstract

Although the mean of COMBINE losses is about 4-5% in advanced countries, unfortunately in Iran is about 20% and higher. In order to obtain little loss it is necessary that product processes such as cutting, transporting, threshing, SEPARATION, … would be optimized expressing the equation of different parts of harvesting is the first step. Threshing is one of these processes which has more effect on COMBINE performance. It is desire to maximize the SEPARATION of grain from concave meshes. Because of increasing the SEPARATION of grains from concave meshes, because it will decrease load of SEPARATION and cleaning mechanisms which lead to reduction of SEPARATION system’s losses. Therefore, efficiency of SEPARATION and cleaning mechanisms would have been increased when SEPARATION efficiency of threshing mechanism was increased. STEM HEIGHT, FEED RATE, threshing clearance rate and CYLINDER SPEED are parameters which were used in COMBINE design and evaluating of its performance. In order to evaluating of these parameters effect on SEPARATION efficiency of threshing cylinder, an experiment was conducted in 4×3×3 factorial pattern with Randomized Blocks design. Independent variables in these experiments were STEM HEIGHT, FEED RATE, THRESHING CLEARANCE RATIO and rotational velocity of threshing cylinder as dependent variables had significant effect on SEPARATION efficiency but interaction effects of them were not significant (P<0.01). SEPARATION of grains from concave opening was increased when STEM HEIGHT, FEED RATE and threshing clearance decreased. As rotational speed of threshing cylinder increased SEPARATION of grains in threshing mechanism increased. Multiple regression was used to express relation between dependent and independent parameters. The most compatible model for threshing of materials (y1), SEPARATION (y2) and MOG passing (y3) were y2= b0 e(b1c1+b2c2+b3c3+b4c4). Which x1, x2, x3 and x4 were STEM HEIGHT, FEED RATE, threshing clearance rate and speed of threshing cylinder respectively and b0, b1, b2, b3 and b4 were constants.

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References

MATHEMATICAL MODELING OF REAR LOSS BASED ON FEED RATE AND THRESHER DRUM SPEED IN JOHN DEERE 1165 COMBINE

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APA: Copy

MIRZAZADEH, A., ABDOLLAHPOUR, SH., & MOGHADAM, M.. (2011). EFFECT OF DESIGN PARAMETERS ON SEPARATION OF GRAIN IN THRESHER TO MINIMIZE SEPARATION LOSS OF COMBINE. JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCE), 21/2(3), 1-11. SID. https://sid.ir/paper/180792/en

Vancouver: Copy

MIRZAZADEH A., ABDOLLAHPOUR SH., MOGHADAM M.. EFFECT OF DESIGN PARAMETERS ON SEPARATION OF GRAIN IN THRESHER TO MINIMIZE SEPARATION LOSS OF COMBINE. JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCE)[Internet]. 2011;21/2(3):1-11. Available from: https://sid.ir/paper/180792/en

IEEE: Copy

A. MIRZAZADEH, SH. ABDOLLAHPOUR, and M. MOGHADAM, “EFFECT OF DESIGN PARAMETERS ON SEPARATION OF GRAIN IN THRESHER TO MINIMIZE SEPARATION LOSS OF COMBINE,” JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCE), vol. 21/2, no. 3, pp. 1–11, 2011, [Online]. Available: https://sid.ir/paper/180792/en

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