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A New Grid Bar Design for a Modified Cylinder Cleaner. Sanh Le, Ph. D. U. S. Cotton Research Unit Stoneville, MS. Objective. Design a seed-cotton and lint cleaner that: is non aggressive preserves fiber properties yields high turnout cleans efficiently
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A New Grid Bar Design for a Modified Cylinder Cleaner Sanh Le, Ph. D. U. S. Cotton Research Unit Stoneville, MS
Objective • Design a seed-cotton and lint cleaner that: • is non aggressive • preserves fiber properties • yields high turnout • cleans efficiently • Evaluate two seed-cotton packing methods
Test Method • Test 1 • 3 cleaner treatments • 2 varieties • 2 packing methods
45 degrees 1 in. 0.5 in. Gap between bars: narrow (0.25 in.) or wide (0.375 in.) Chisel-shape grid bar
Test 1 Test 2 FC FC NFCC NCCC WCCC CC MCC Step 1: seed cleaning SM, TM SM, TM EFGS EFGS MCC or SLC MCC or SLC NCHCC WCHCC Step 2: lint cleaning Condenser, baler Condenser, baler
Cleaner treatments • Hybrid lint cleaner* with wide gap chisel-shape grid bars (WCHLC) • Hybrid lint cleaner with narrow gap chisel-shape grid bars (NCHLC) • Saw-type lint cleaner (SLC) *Six-cylinder cleaner + saw-type lint cleaner with one grid bar
Varieties • Hairy-leaf variety (STV4892) • Smooth-leaf variety (DPL555)
Packing methods • By hand • Suction pipe
Experiment • Split plot with cleaner treatments as the main unit. • 30 runs with 3 replications
Test 2: 2 steps Step 1: seed-cotton cleaning • 3 Seed cotton cleaning treatments Step 2: lint cleaning • 3 lint cleaning treatments (same as Test 1) ------------------------------------------------------ • 2 varieties • 2 packing methods
Test 1 Test 2 FC FC NFCC NCCC WCCC CC MCC Step 1: seed cleaning SM, TM SM, TM EFGS EFGS MCC or SLC MCC or SLC NCHCC WCHCC Step 2: lint cleaning Condenser, baler Condenser, baler
Seed-cotton cleaner treatments • Modified cylinder cleaner with narrow gaps and flat, square grid bars (NFCC) • Modified cylinder cleaner with narrow gaps and chisel-shape grid bars (NCCC) • Modified cylinder cleaner with wide gaps and chisel-shape grid bars (WCCC)
Results Test 1, HVI
Seed-cotton cleaning Test 2, HVI
Conclusion • Chisel-shape grid bars clean seed cotton more efficiently than flat, square grid bars • Hybrid lint cleaners • Yield higher turnout (14.3 lb/bale), without compromising classer’s grade • Loss less fiber in waste (50% of SLC) • Provide similar fiber quality, except neps, seed coat neps and cleaning efficiency
Variety effects • Smooth-leaf variety • Is easier to clean (low VFM) • Had higher fiber strength, reflectance, neps and short fiber content • Had lower seed coat neps, fiber length, fineness and maturity ratio
Seed-cotton packing methods • No difference in trash level resulted from packing methods • Hand packed method had higher mike, cleaning efficiency and visible waste in waste • Packing methods did not affect fiber properties, except • Hand packed seed cotton was higher in reflectance and lower in neps