ginning

BZU TEXTILE ENGINEERSBZU TEXTILE ENGINEERS


PROCESS IN WHICH LINT IS SEPERATED FROM SEED COTON BY

MECHANICAL MEANS.


GINNING HISTORYGINNING HISTORY

•• CHURKHA ROLLER CHURKHA ROLLER GINNINGGINNING


•• INVENTION OF ELI WHITNYINVENTION OF ELI WHITNY


• CONDITIONING

• LINT SEPERATION

• CLEANING


•• LINT:LINT:--

LINTS ARE LONG COTTON FIBRES LINTS ARE LONG COTTON FIBRES SEPARATED FROM SEED COTTONSEPARATED FROM SEED COTTON

•• LINTER:LINTER:--

THESE ARE VERY SHORT COTTON FIBRES THESE ARE VERY SHORT COTTON FIBRES THAT REMAINED WITH SEED AFTER GINNINGTHAT REMAINED WITH SEED AFTER GINNING


LINTS ARE LONG COTTON FIBRES SEPARATED FROM SEED COTTON

••GINNING OUT TURN(G.O.T):GINNING OUT TURN(G.O.T):--

IT IS THE RATIO OF THE LINT BY WEIGHT

TO THE WEIGHT OF SEED COTTON

WEIGHT OF LINT

WEIGHT OF SEED COTTON

WEIGHT OF LINT

WEIGHT OF SEED COTTON


•• GIN CUT COTTONGIN CUT COTTON

COTTON FIBRES WHICH HAVE BEEN CUT, BROKEN,

TWISTED BY THE SAWS OF THE GIN WHEN THE COTTON

IS TOO DAMP.


TYPES OF GINNINGTYPES OF GINNING

�� ROLLER GINNINGROLLER GINNING

�� SAW GINNINGSAW GINNING


��ROLLER GINNINGROLLER GINNING

SEPERATION OF LINT BY MEANS OF SEPERATION OF LINT BY MEANS OF ROLLER AND KNIFE.ROLLER AND KNIFE.

IT IS USED FOR LONG AND EXTRA IT IS USED FOR LONG AND EXTRA LONG FIBRESLONG FIBRES


TYPES OF ROLLER GINNINGTYPES OF ROLLER GINNING

1.CHURKHA ROLLER GIN:1.CHURKHA ROLLER GIN:

FIRST MECHANICAL FIRST MECHANICAL APPROACH HAVING CAPACITY OF 5 APPROACH HAVING CAPACITY OF 5 POUNDS PER DAYPOUNDS PER DAY


2. RECIPROCATING KNIFE ROLLER GIN:2. RECIPROCATING KNIFE ROLLER GIN:

DEVELOPED IN DEVELOPED IN

USA IN 1840 HAVING CAPACITY OF USA IN 1840 HAVING CAPACITY OF

5050--80 POUNDS OF LINT PER HOUR80 POUNDS OF LINT PER HOUR


3. ROTARY KNIFE ROLLER GIN:3. ROTARY KNIFE ROLLER GIN:

DEVELOPED BY USDA IN 1950s. DEVELOPED BY USDA IN 1950s. ITS CAPACITY IS 600ITS CAPACITY IS 600--750 POUNDS 750 POUNDS

OF LINT /HOUROF LINT /HOUR


WORKING PRINCIPLEWORKING PRINCIPLE

•• COTTON SLIDES COTTON SLIDES DOWN THE FEEDERDOWN THE FEEDER

•• ENTERS THE GIN B/W ENTERS THE GIN B/W GINNING ROLLER & GINNING ROLLER & ROTARY KNIFEROTARY KNIFE

•• REVOLVING ROLLERS REVOLVING ROLLERS HELD AGAINST KNIFE HELD AGAINST KNIFE PULLS THE LINTPULLS THE LINT


��SAW GINNINGSAW GINNING

•• FOR MEDIUM AND SHORT STAPLE FOR MEDIUM AND SHORT STAPLE VARIETIESVARIETIES

•• INVENTED BY ELI WHITNEY IN INVENTED BY ELI WHITNEY IN 1793s.1793s.

•• IT HAS CAPACITY OF 13IT HAS CAPACITY OF 13--15 BALES 15 BALES PER HOURPER HOUR



•• ENTERANCE IN GIN ENTERANCE IN GIN STANDSTAND

•• SAWS GRASPS THE SAWS GRASPS THE COTTON AND DRAW COTTON AND DRAW IT THROGH WIDELY IT THROGH WIDELY SPACED RIBSSPACED RIBS

•• SPACES ARE SPACES ARE SUFFICIENT FOR SUFFICIENT FOR FIBRE PASSING FIBRE PASSING WHILE SEEDS WHILE SEEDS REMAIN THEREREMAIN THERE


COMPARISONCOMPARISON

•• ROLLER GINNINGROLLER GINNING

•• SLOW PROCESSSLOW PROCESS

•• LESS FIBRE DEMAGELESS FIBRE DEMAGE

•• FOR LONG STAPLE FOR LONG STAPLE FIBRESFIBRES

•• FOR PIMA COTTONFOR PIMA COTTON

•• CAPACITYCAPACITY 600600--750 750 POUNDS OF LINT PER POUNDS OF LINT PER HOURHOUR

•• SAW GINNINGSAW GINNING

•• FAST PROCESSFAST PROCESS

•• MORE FIBRE DEMAGEMORE FIBRE DEMAGE

•• FOR SHORT STAPLE FOR SHORT STAPLE FIBRES FIBRES

•• FOR UPLAND FOR UPLAND COTTONCOTTON

•• CAPACITYCAPACITY 1313--15 BALES 15 BALES OF LINT PER HOUROF LINT PER HOUR


GINNING PROCESSGINNING PROCESS


GINNING PROCESS FLOWGINNING PROCESS FLOW

•• DRYERDRYER

•• CYLINDER CLEANERCYLINDER CLEANER

•• STICK MACHINESTICK MACHINE

•• EXTRACTOR FEEDEREXTRACTOR FEEDER

•• GIN STANDGIN STAND

•• LINT CLEANERLINT CLEANER

•• BALE PRESSBALE PRESS


OVERVIEW OF PROCESSOVERVIEW OF PROCESS


��DRYERDRYER


•• HEATED AIRHEATED AIR

OPTIMUM CONDITIONSOPTIMUM CONDITIONS

•• TEMPERATURE(350 F)TEMPERATURE(350 F)

•• MOISTURE (7MOISTURE (7--8%)8%)

•• DURATUION OF DRYING(5DURATUION OF DRYING(5--10SEC)10SEC)


PURPOSES OF DRYINGPURPOSES OF DRYING

•• SMOOTH OPERATION OF PROCESS SMOOTH OPERATION OF PROCESS MACHINERYMACHINERY

•• SEPERATION INTO SINGLE FLOCKSSEPERATION INTO SINGLE FLOCKS

•• CONTROL MOISTURE IN SEED CONTROL MOISTURE IN SEED COTTONCOTTON


PICTURE OF DRY TOWERPICTURE OF DRY TOWER


��CYLINDER CLEANERCYLINDER CLEANER

PURPOSEPURPOSE

•• TO REMOVE FINE TO REMOVE FINE IMPURITIES(LEAF,TRASH,DIRT)IMPURITIES(LEAF,TRASH,DIRT)

•• OPENING OF FLOCKSOPENING OF FLOCKS

MACHINE SPECIFICATIONMACHINE SPECIFICATION

•• NO. OF SPIKED ROLLERS(6NO. OF SPIKED ROLLERS(6--7) 7)

•• REVOLUTION PER MINUTE(400REVOLUTION PER MINUTE(400--500)500)


PIC. OF CYLINDER CLEANERPIC. OF CYLINDER CLEANER


��STICK MACHINESTICK MACHINE

PURPOSEPURPOSE

•• REMOVAL OF LARGER FOREIGN REMOVAL OF LARGER FOREIGN MATTER (STICKS)MATTER (STICKS)

PRINCIPLEPRINCIPLE

•• CENTRIFUGAL FORCECENTRIFUGAL FORCE

•• RPM OF SAW CYLINDER (300RPM OF SAW CYLINDER (300--400)400)


PIC. OF STICK MACHINEPIC. OF STICK MACHINE


��EXTRACTOR FEEDEREXTRACTOR FEEDER

PURPOSEPURPOSE•• PRIMARY FUNCTIONPRIMARY FUNCTION

EVEN FEEDING TO THE GIN EVEN FEEDING TO THE GIN STANDSTAND

•• SECONDARY FUNCTIONSECONDARY FUNCTION

EXTRACTION OF SMALL EXTRACTION OF SMALL AMOUNT OF IMPURITIESAMOUNT OF IMPURITIES


PIC. OF EXTRACT FEEDERPIC. OF EXTRACT FEEDER


��GIN STANDGIN STAND

PURPOSEPURPOSE

•• SEPARATION OF LINT FROM SEED SEPARATION OF LINT FROM SEED COTTONCOTTON


BY THE ACTION OF SET OF ROTATING BY THE ACTION OF SET OF ROTATING SAWSSAWS


PIC. OF GIN STANDPIC. OF GIN STAND


��LINT CLEANERLINT CLEANER

PURPOSEPURPOSE

REMOVAL OF IMPURITIES FROM LINTREMOVAL OF IMPURITIES FROM LINT

PROCESSPROCESS

•• FEEDING OF BATT(COMPACT SHEET FEEDING OF BATT(COMPACT SHEET OF COTTON)OF COTTON)

•• EVENNESS OF BATT THICKNESSEVENNESS OF BATT THICKNESS

•• CLEANING ACTIONCLEANING ACTION


PIC. OF LINT CLEANERPIC. OF LINT CLEANER


BALE PRESSERBALE PRESSER

PURPOSE PURPOSE

TO PRESS GINNED COTTON IN FORM TO PRESS GINNED COTTON IN FORM OF COMPACT BALE .OF COMPACT BALE .


PIC. OF BALE PRESSERPIC. OF BALE PRESSER


INFLUENCES OF GINNING INFLUENCES OF GINNING ON FIBREON FIBRE

•• UNIFORMITY YESUNIFORMITY YES

•• TRASH CONTENTS YES TRASH CONTENTS YES

•• MICRONAIRE NOMICRONAIRE NO

•• STRENGTH NO STRENGTH NO


THANK YOUTHANK YOU

ginning

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