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Power threshers for effective threshing of crops since green revolution- A Review

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Title Power threshers for effective threshing of crops since green revolution- A Review
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Creator Tiwari, R. K.
Din, M.
Kumar, Manish
 
Subject Fine straw, power consumption, spike thickness, output capacity, threshing efficiency
 
Description Not Available
This paper focuses on review of development of proven designs for threshing of cereals, oilseeds, pulses for savings of labour, time and cost of operations. The
development of power threshers started in India in mid 1950's.The use of mechanical power for threshing started with the use of chaff cutters in Punjab. It was used to chop up the
wheat crop, which also partially threshed the heads. Mechanical threshers of varying power range (3.7-15 kW) are commercially being manufactured which not only thresh the
grain but also provide good quality bhusa for cattle feed. It is estimated that there are nearly 30 million threshers of various designs in operation in the country. The annual addition
to this number is 2,00,000 units. Multi-crop threshers in 3.7 kW capacity have been developed at CIAE, Bhopal, ANGRAU Hyderabad and PAU Ludhiana centres of AICRP on
FIM and these have been commercialized through industrial liaisoning. These designs proved successful in reducing total losses, power consumption, straw/stalk size, human
drudgery ensuring quality produce. The main parameters which affected the performance of the threshers, were speed of the threshing cylinder, feed rate and moisture content of
the harvested crop. The intensity of the impact of the pegs of the cylinder on the crop was dependent on the rotating speed of threshing cylinder which affected the threshing
efficiency, grain damage and power requirement. For higher threshing efficiency, fine straw quality and minimum specific power consumption, rectangular spiked threshing cylinder
of 600 mm tip diameter and spike thickness of 6 mm have given best performance results with total grain loss within permissible limit. The spike thickness of 6 mm gave minimum
broken grain loss with fine straw quality. The round spiked (plain spike) threshing cylinder with same configuration of threshing cylinder showed best results. But from mass
manufacturing point of view, tip diameter of 600 mm and 8 mm round spike thickness will be appropriate for manufacturers. It also delivered good output capacity and threshing
efficiency and fine straw quality.
Not Available
 
Date 2021-08-02T11:30:44Z
2021-08-02T11:30:44Z
2018-01-01
 
Type Review Paper
 
Identifier Not Available
0975-3710
http://krishi.icar.gov.in/jspui/handle/123456789/52359
 
Language English
 
Relation Not Available;
 
Publisher Not Available