A New Grid Bar Design for a Modified Cylinder Cleaner Sanh Le, Ph. D. U. S. Cotton Research Unit Stoneville, MS.

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Presentation transcript:

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

Ginning sequence

45 degrees 1 in. 0.5 in. Chisel-shape grid bar Gap between bars: narrow (0.25 in.) or wide (0.375 in.)

FC CC SM, TM MCC or SLC Condenser, baler EFGS FC MCC SM, TM MCC or SLC Condenser, baler EFGS Test 1Test 2 Step 1: seed cleaning Step 2: lint cleaning NFCC NCCC WCCC NCHCC WCHCC

Cleaner treatments 1.Hybrid lint cleaner* with wide gap chisel- shape grid bars (WCHLC) 2.Hybrid lint cleaner with narrow gap chisel- shape grid bars (NCHLC) 3.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) varieties 2 packing methods

FC CC SM, TM MCC or SLC Condenser, baler EFGS FC MCC SM, TM MCC or SLC Condenser, baler EFGS Test 1Test 2 Step 1: seed cleaning Step 2: lint cleaning NFCC NCCC WCCC NCHCC WCHCC

Seed-cotton cleaner treatments 1.Modified cylinder cleaner with narrow gaps and flat, square grid bars (NFCC) 2.Modified cylinder cleaner with narrow gaps and chisel-shape grid bars (NCCC) 3.Modified cylinder cleaner with wide gaps and chisel-shape grid bars (WCCC)

Results Source of variance ReflectanceYellownessLeaf gradeTrash area, %Uniformity,% Cleaner treatment: NCHLC 75.1b a0.040b81.2 SLC 76.1a b0.035c81.1 WCHLC 75.3b a0.046a81.3 Varieties: STV b9.0a3.4 a0.043 a82.0a DPL a8.0b3.0 b0.038 b80.4b Test 1, HVI

Source of varianceNeps/gSeed coat neps/gDust/g Visible foreign matter, % Lint cleaner treatments: NCHLC 289.2a ab1.79a SLC260.8c b1.31b WCHLC275.3b a1.95a Cultivar :STV b14.4a a DPL a9.9b b Packing : Hand271.0b Pipe279.2a Test 1, AFIS

Source of variance Upper quartile length(w), cm Short fiber content(w), % Fineness, mTex Maturity ratio, % Lint cleaner treatments: NCHLC SLC WCHLC Cultivar : STV a7.23b179.3a0.892a DPL b9.64a156.4b0.846b Packing : Hand Pipe Test 1, AFIS

Seed-cotton cleaning Source of variance Strength, g/texReflectanceLeaf gradeLength, cm Seed-cotton treatments: NFCC 28.0b75.2a3.7a2.76 b NCCC28.5a75.0ab3.6a2.76b WCCC28.2ab74.8b3.4b2.77a Test 2, HVI

MicronaireReflectanceYellownessLeaf gradeTrash area, % Lint cleaner treatments: NCHLC b8.6a3.6a0.047b SLC a8.7a3.4b0.039c WCHLC b8.5b3.7a0.056a Cultivars: STV a74.0b8.9a3.7a0.049 DPL5554.4b76.0a8.3b3.4b0.046 Packing : Hand4.4a75.3a Pipe4.4b74.7b Test 2, HVI

Source of variance Short fiber content(w), % Fineness, mTex Maturity ratio, % Seed-cotton treatments: NFCC NCCC WCCC Lint cleaner treatments: NCHLC SLC WCHLC Cultivar:STV b178.3a0.892a DPL a156.8b0.850b Packing: Hand Pipe Test 2, AFIS

Source of varianceNeps/gSeed coat neps/gDust/g Visible foreign matter, % Seed-cotton treatments: NFCC 248.6b NCCC253.8ab WCCC262.5a Lint cleaner treatments: NCHLC 260.0a13.0ab423.9ab1.95b SLC245.2b11.7b352.1b1.55c WCHLC262.8a13.4a438.0a2.09a Cultivar: STV b15.3a DPL a10.1b Packing: Hand249.2b Pipe260.7a Test 2, AFIS

Source of variance Lint turnout, % Cleaner waste, kg/bale Cleaning efficiency, % Based on visible waste (Shirley Analyzer) Lint cleaner treatments: NCHLC 38.3a3.53b34.3b SLC37.5b7.97a47.3a WCHLC38.0ab3.27b30.8b Cultivar: STV b4.34b37.1 DPL a5.51a37.9 Packing : Hand a39.6 Pipe b35.4 Test 1

Cleaned lint in waste, %Visible waste in waste, % Lint cleaner treatments: NCHLC21.3c75.9a SLC47.6a51.1c WCHLC27.3b70.6b Cultivar: STV b67.0a DPL a64.8b Packing : Hand Pipe Test 1

Source of variance Lint turnout, % Cleaner waste, kg/bale Cleaning efficiency, % Based on visible waste (Shirley Analyzer) Seed cotton treatments: NFCC c w NCCC b WCCC a Lint cleaner treatments: NCHLC 40.0a3.16b28.7b SLC39.0b7.59a52.5a WCHLC39.8a3.19b27.8b Cultivar : STV a DPL b Packing : Hand a Pipe b Test 2

Cleaned lint in waste, %Visible waste in waste, % Seed cotton treatments: NFCC NCCC WCCC Lint cleaner treatments: NCHLC22.3b74.9a SLC44.4a54.1c WCHLC27.7b67.1b Packing : Hand a Pipe b Test 2

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