DEVELOPMENT AND PERFORMANCE EVALUATION OF SELECTED SPICES SEED EXTRACTOR.
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Date
2019-10-18
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Dr.Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
Spices seed extractor was developed to extract the ajwain and fennel seeds. The overall dimensions of the developed spices seed extractor were 1288 x 579 x 1844 mm which is operated by 2 hp single-phase electric motor. Impact and shear force extract the seeds from the ajwain and fennel flowers. For proper design, physical and mechanical properties were determined using standard procedures.
Spices seed extractor consisted of feeding unit (hopper), extraction unit, sieve/cleaning unit, main frame and power transmission system. Extraction unit consisted of stud bolted rotary drum. The extraction drum is covered with casing having seven square bars and the concave is provided below the extraction drum. The ajwain and fennel crop with seed is rubbed between extraction drum and the casing as well as between the extraction drum and the concave. The clearance between the drum and the concave was kept as 7 mm and 8 mm for ajwain and fennel crops, respectively for sufficient extraction. The seeds and the chaffy material fall through the perforated concave on the sieve unit for further cleaning. Sieve/cleaning unit is provided with blower, two sieves, arrangement for changing sieve unit slope and sufficient eccentric mechanism for changing the stroke length. After feeding of ajwain and fennel crops from the hopper to the rotary drum, the drum offered impact by on the ajwain and fennel flowers whereas the casing and concave developed rubbing and shearing force on flowers.
The machine and operational parameters were optimized and the performance evaluation of extractor was also studied on the basis of different response parameters such as extraction efficiency, mechanical seed damage, cleaning efficiency, seed loss and seed germination percentage. Specific energy consumption was calculated and cost analysis was also carried out. The techno-economic feasibility of the extractor was also studied.
The optimized input parameters for ajwain seed extraction were found to be stud bolted drum with rotational speed of 704.04≈700 rpm and feed rate of 179.36≈180 kg/h. The maximum ajwain seed extraction efficiency of 97.58 per cent and minimum seed damage of 1.65 per cent was observed at optimized input parameters. The optimized input parameters for fennel seed extraction were found to be stud bolted drum with rotational speed of 706.50≈700 rpm and feed rate of 175.36≈175 kg/h. The maximum fennel seed extraction efficiency of 76.06 per cent and minimum seed damage of 2.91 per cent was observed at optimized input parameters.
The optimized input parameters for ajwain seed cleaning were found to be sieve unit slope of 11.91≈12 degrees, stroke length of 3.09 ≈ 3 mm and sieve oscillation frequency of 551.74 ≈ 550 strokes/min. The maximum ajwain seed cleaning efficiency of 76.06 percent and minimum seed loss of 0.978 per cent was observed at optimized input parameters. The optimized input parameters for fennel seed cleaning were found to be sieve unit slope of 11.74 ≈ 12 degrees, stroke length of 3.21≈ 3 mm and sieve oscillation frequency of 572.15 ≈ 550 strokes/min. The maximum fennel seed cleaning efficiency of 77.35 per cent and minimum seed loss of 1.252 per cent was observed at optimized input parameters.
The germination percentage of 89 and 91 percent was found for the extracted ajwain and fennel seeds. The specific energy consumption was 0.828 kWh/q. The cost of the machine was found to be Rs. 40000/- and the overall cost of operation was found to be Rs. 81/q.
Description
The ajwain and fennel seed extractor was developed. Considering the performance of the machine in terms of extraction efficiency, mechanical seed damage, cleaning efficiency, seed loss, germination, specific energy consumption, physical performance during operation, cost economics, the developed spices seed extractor can be used for ajwain and fennel seed extraction.
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Citation
MURUMKAR, RAJESH PRABHAKAR.(2019). Development and Performance Evaluation of Selected Spices Seed Extractor. Department of agricultural process engineering,Dr. Panjabrao Deshmukh Krishi Vidyapeeth. Ph. D. 2019. Print.xviii, 200p. (Unpublished).