What are the Special features of modern beater in Blowroom?

What are the important features of the modern beater which make them suitable to process different varieties of cotton? Briefly explain them by taking example of a modern beater.

The latest approach is to open and agitate the cotton and remove the micro dust as and when generated before they settle down again.

In all modern beaters (like mono cylinder, Improved porcupine beater, ERM cleaner etc. , the grids can be adjusted individually. The grid can be adopted to handle any degree of impurity and opening in the cotton to be processed by means of the lever provided with scales.

The grid can be adjusted regarding spacing (0 to l2mm) between grid as well as inclination(0 to 30°) , it is thus possible to adjust the amount of waste and its quality to the requirements and the different types of raw material.

Effective control of feed by the electronic feed regulator like P. E cell in the feeding section of the modern beater.

The aero dynamic principle of separation of trash from lint is employed in shirly opener and Airjet cleaner.

Loose beating technique is employed in step cleaner for good opening without any harsh beating. Also Micro dust extraction, improve the processing performance of the O.E. spinning.

The advantage of modern beater is like mono cylinder is that the impurities are separated from cotton without being crushed and this proves favourable during subsequent operations.

Special feature of the axiflo cleaner is that fibre contained in large tufts can not get entangled or lost through the grid. They remain in the machine till they are transformed into small tufts and release their impurities. The position of the adjustable guide plate between the two cylinder decides how long the tufts remain under the influence of the each cylinder.

All modern beaters are simple in construction and efficient unit suitable for all classes of cotton.

Maximum trash extraction.

Adjustable grid bar profile to optimise cleaning efficienty and suitable to process different varities of cotton.

Opening and beating are combined in the same machine for effective cleaning.

Less nep generation.

Less floor space.

Minimum maintenance.

Reduced power consumption.

Good blending action,

Improved yarn strength.

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Proper selection and positioning of machines in blow room line

Feeding techniques of all the opener and cleaning machines can be broadly classified into two types.

1. Loose feeding (free beating points)

Examples: Vertical opener, step cleaner, mono cylinder, S.R.R.L. Opener, Axiflo cleaner, etc. ,

2. Semi-fast gripped feeding (controlled feeding)

Examples: Porcupine opener, 3 bladed beater, ERM cleaner,etc., Loose feeding beating technique is employed in the initial cleaning line so that heavy impurities are removed, otherwise they will be crushed into fragments while fed into gripped feeding through pair of feed roller and it is very difficult to Remove crushed impurities.

Certain machine gives its best in terms of cleaning efficiency, it must be fed with material that has been preopened to a certain degree.

The kirschner beater is a minor cleaning point and because
of its intensive combing action and it improve the evenness and
texture of lap. So it must be placed as the last machine of the
scutcher.

Proper speeds & settings:

This decides the amount of opening & cleaning that can be achieved by a machine. High beater speed & closer beater settings gives better cleaning. But, beater speed & setting depends upon type of cotton, maturity & trash content. Improper setting, speed results fibre damage, nep generation of cotton.

Type of raw material to be processed : Selection & No. of openers & beaters depends upon the type of cotton & trash in them Long, finer & immature cottons cannot be subjected to too many cleaning points, since over treatment will results fibre damage, and neps.

low grade cotton with high trash content will require more beating points.

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MONO CYLINDER CLEANER in Blowroom | working principle

Object : To open and clean the cotton.

Advantages : Impurities are separated without being crushed.

This proves favourable during subsequent operations.
Type : Loose feeding pin opener.

The well opened tuft of cotton from mixing bale opener enter the machine at right angles to the pin cylinder axis.

The pin cylinder has 8 rows of six pins each, arranged spirally -around its circumference.

Due to the collision of the cotton tufts with rapidly revolving pin cylinder against grid bar, impurities from cotton is extracted and passed through the spacing of the grid bar.

After the tufts come into the contact with the grids for the first time, they are flung into the top part of the housing. Owing to the guide plate, the tufts moves along a helical path, so that they fall on the pin of the cylinder again and retaken past the grid a second time. At the same time the tufts are turned over, so that all their surface are brought into contact with grid, assisting the removal of dirt. The spiral path is continued by the guide plate and the tufts pass over the grid a third time, after which they leave the machine at the outlet.

The grids are arranged in two separate section which can be adjusted individually. The grid can be adopted to handle any degree of impurities and opening in the cotton to be processed by means of the lever provided with the scales. The grid can be adjusted regarding spacing ( 0 to 12 mm) between the grid bar, as well as inclination ( angular setting of the grid bar -0° to 30°). It is thus possible to adjust the amount of waste and its quality to the requirements and the different types of raw material ,

Magnetic Double Elbow : This is installed in mono cylinder to remove larger or smaller solid foreign bodies of metallic and non-metallic origin. By deviating the fibre-air stream through a sharp angle, heavy particles are thrown in to the metal box by inertia. Light metallic parts are further more attracted by a permanent magnet plate.V

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Blow room - Maintenance program

Maintenance is a program to keep all the parts of the machine in perfect condition with minimum wear and tear.

Preventive Maintenance in Blow Room;

It means to attend and check the machines regularly and systematically and defects are discovered and remedied before they cause a need for, major repair and before the wear & tear of the machine starts affecting the quality and production,

	Parts to be inspected	Rating &   Action taken Remarks Repaired/replaced
	check the condition of
1	spikes on lattice &lattice   tension	If the part is defective, write   "poor & needs Correction" in the rate & Remark column.
2	Striking edge of all the beaters
3	Feed roller weighting & its setting with beater.	The parts that are replaced or repaired   will    be entered by maintenance incharge.
4	Position of damper & air current in the cage.
5	Sharpness of blade/spike/pins of    beater.	Importance of maintenance in Blow Room.
6	Stripping rail setting in beater.
7	Function of P.E. cell swing door  & other feed control mechanisms.	If   a     serious breakdown occur in Blow
8	Condition   of   pedal feed   control mechanisms.

 

9	Calender Roller bearing & its weighting.	Room, a high   proportion
		of a Mills production will
10	Racks condition & Effectiveness	be stopped causing the
	of brake.	subsequent process to   be
11	Timing and synchronisation of	short of material.
	auto doffing mechanism.	This can be avoided to
12	Lap length measuring motion.	some extent by a thorough
13	Lap hardening Mechanism.	inspection and systematic
14	Lubrication system	Programme of   maintenance.
15	Al1 bearings-condition.	which can also helps to
16	Belt,     gear,    chain,    Robe &	reduce     the      1ap
	all driving connection.	irregularities and improve
17	Motor & its pulley condition.	the cleaning efficiency.
18	Roller vibration/ Eccentricity
19	Speed & settings.
20	Pan whether chocked with dust,
	or not.
21	R.H.% & Temp condition.
22	Ratio of fan to beater speed &
	Air current.
23	Robe & Bls tension.
24	All nuts, Bolts, screws-tightening
25	Check for any rough places on
	various rollers or calenders

Routine Maintenance in Blow Room: It means to attend the machine and maintenance work is carried out as per the maintenance schedule so as to maintain the Machine in perfect condition with minimum wear & tear.

Nature of operation                                                              Frequency

 

1. Dismantling -Checking- thorough
cleaning & resetting of
i) Cage Unit, ii) Lap doffing unit                                  Every month

iii) Lap measuring Motion
	iv) Lap hardening Mechanism.
	v) Piano feed regulating Motion
2.	Cleaning of grid bar	Every shift
3.	Removal of droppings from beneath
	the grid bar.	Twice per Shift
4.	Straightening of bent pins of	Whenever needs
	kirschner beater and sharpening the
	beater blade.
5.	Polishing of grid bar.	6 months
6.	reversal of beater blade.	1 year
7.	Re dressing of beater blade	2 year
8.	Clean inside the cage	each shift.
9.	Applying Black-lead powder inside the
	cage	periodically
10	. General cleaning	.15 days
11	. Lubrication of all the gear wheel	Daily & greasing at
	&. bearing.	the time of frame cleaning.
12	correct the leakage places in the
	entire pneumatic duct line.	Every week.

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