Design Of Delinter Machine Grate for High Removal Lint- A ... · [2] Thomas c. Wedegaertner,...

International Journal of Modern Trends in Engineering and Research

www.ijmter.com e-ISSN No.:2349-9745, Date: 28-30 April, 2016

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Design Of Delinter Machine Grate for High Removal Lint- A Review Pramod R. Mahale1, Dinesh P. Panchve2

1Department of Mechanical Engineering, MET’s BKC IOE, Nashik, [email protected] 1Department of Mechanical Engineering, MET’s BKC IOE, Nashik, [email protected] –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Abstract- The objective of this project is to design of the delinter machine grate for increasing productivity, quality of lint, minimizing friction between saw grates and saw blanks, uniform shape and length of grate. To achieve these objectives by new design of delinter machine grate and analyze the new design of grate by mechanical software’s. New design of grate, it will may be result in uniform in shape and length of grate, minimizing chances of burning linter, quality of lint will increase. A cottonseed delinting machine mechanically delints the cottonseed by a rotating brush system. There are 200 saw blanks, 201 grates are used in delinter machine. The burning of linter due to friction between saw blanks and grates. By using new design of grate the friction between saw blank and grate will be minimize and quality of lint will increase. Keywords- Delinter machine; grates; saw blanks; lint; cotton seeds.

I. INTRODUCTION

Delinter machine is part of cottonseed processing plant. Delinter machine removes lint from cotton seeds as shown in fig.1. A cottonseed delinting machine mechanically delints the cottonseed by a rotating brush system. There are two processes used for delinting cottonseed, firstly is mechanically and second acid delinting process. Mechanically delinted is the most common form of delinted seed available in the feed trade. Delinted seed retains about 1-2% residual linters which usually appear on the surface of the seeds. Acid delinting is a process that completely removes all linters. This process is used for the production of planting seed. At certain times during the year, quantities of culled, or leftover planting seed, become available to the feed trade. Such types of planting seeds may be hazards caution stress of soul kind of chemical.

Figure 1: Delinter Machine

After ginning some amount of lint remains on the seeds, which are input of delinter machine. The machine also provides for the recovery of the linter after separation from the cottonseed. The

International Journal of Modern Trends in Engineering and Research (IJMTER) Volume 3, Issue 4, [April 2016] Special Issue of ICRTET’2016


movement and path of travel of the cottonseeds during the delinting process is controlled to ensure a high degree of efficiency in the removal of the linter. First seeds apassed throughfeeder. The cottonseed gets trapped in between grate and saw blank.

Figure 2: Grate

Grate plays very important role in delinting machine as shown in fig.2.During delinting process the cotton gets stuck to brush roll. The brush roll is rotating in clockwise direction, while the saw blank is rotating in opposite direction of brush roll. During delinting process the grates is help to trap the cotton seed in gap of saw blank and grate. With the help of the nozzle, linter is suck to the lint cleaner machine and the black seeds are fall down in underground conveyor and are passed to next process. I.e. Seed cleaning process

II. LITERATURE REVIEW

After studying the literature it can be concluded that a lot of work has been done in the field of delinter machine. Prof. R. B.Salwe et.al [1] developed cost effective for automation for delinting machine and study low cost systems, for the treatment of cotton seed to remove lint from cottonseeds. A low cost automation system for removal of lint from cottonseed is to be designed and developed. The setup consists of stainless steel drum with stirrer in which cottonseeds having lint is mixed with concentrated sulphuric acid. So lint will get burn. This lint free cottonseed treated with lime water to neutralize acidic nature. After water washing this cottonseeds are used for agriculture purpose. Thomas c. wedegaertneret.al [2] studied Systems and methods for removing material, e.g., linters, from seeds, e.g., ginned cottonseeds, are provided. The systems and methods involve rotating the seeds in a rotatable drum having a plurality of longitudinal brushes. The centrifugal force created by the rotation of the drum and the plurality of longitudinal brushes urge the seeds against an interior surface of the drum that is lined with a brush insert. In this way, work is performed that removes the material from the exterior of the seeds. The material is removed using reduced. Pressure and the processed seeds are removed. The system may include a brush insert that is easily removed from the rotatable drum. Ugwuet.al [3] worked on optimization and performance evolution of cotton seed delintingmachine.The machine was modified by introducing three pulleys with diameters as 250mm, 200mm and 120mm, which produced rotor speeds of 550rpm, 600rpm and 650rpm respectively. The rotor speeds were



then used to test the designed machine and its efficiency were evaluated. The belt and pulley were used to transmit power from the electric motor to the shaft of the cotton seed delinting machine unit. The designed machine was operated by a 2hp electric motor. The performance test was carried out using three different feed rates at three different speeds which include 550rpm, 600rpm and 650rpm, using 5g, 6g and 7g weight of feed rates of the cotton wool with their seeds. Each one was replicated five times. The results showed that the efficiency of the machine was high at 7g feed rate, which was 79.93% and the speed does not influence the efficiency of the machine. The statistical analysis [ANOVA] for the effect of speed of the rotor and feed rate on the capacity and performance of the evaluated machine at 5% probability level was computed. The result of the analysis confirms that feed rate was significant processing parameter that affects machine efficiency. M. K. Sharma [4] studied on new trends in cotton ginning and cotton seed processing. The optimum utilization of all ingredients of cotton i.e. fiber, cotton seed, cotton stalk has become thenecessity for survival in the competitive field of cotton growing and processing. The reduction of electrical power cost and to mechanize the operations in a way that manpower component is reduced to the minimum for complete cotton value processing chain has become necessity due to scarcity of manpower and increase in the price of electricity rates in different countries. The continuous efforts are being made to address these issues by the manufacturers and scientific community and various new equipment’s / systems have been introduced in the recent year in the journey of modernization / improvement of various operations in the cotton ginning and cotton seed processing. Thomas c. wedegaertneret.al [5] developed Systems and methods for removing linters from ginned cottonseeds are provided. The systems and methods involve rotating the cottonseeds in a rotatable drum having a plurality of longitudinal brushes. The centrifugal force created by the rotation of the drum and the plurality of longitudinal brushes urge the cottonseeds against an interior surface of the drum that is lined with a flexible abrasive member. In this way, work is performed that removes the linters from the cottonseeds. The linters are removed using reduced pressure and the processed seeds are removed.

III. RELEVANCE AND SIGNIFICANCE There are many types of machines used in cotton seed processing plant. Delinter machine play very importance role in cotton seed processing plant. Delinter machine convert white seeds into black seeds. Grate play very important role in delinting process. Grates purpose is to trap the cotton seed in gap of saw blank and grate. Delinted linter is used in currency paper. Lint play very important role in day today life. Higher capacity of lint removal, higher output and excellent quality of lint is desired.

IV. NEED OF INVESTIGATION

The current design of the grates doesn’t provide the highest capacity lint removal; Quality of lint along with problem of burning of lint. Detailed analysis of the grate is also required to determine the losses. Following problems occurs in Delinter machine:- Friction between grates and saw blanks. Chances of Burning of lint. Low Quality of lint. White seeds in output of delinter machine. Output of delinter machine decreases.



Shape and length of grates are not in uniform length.

A) Burning of lint:-

Figure 3: Burning of lint

There are many chances of burning lint due to friction between saw blanks and grates. Quality of lint and output of delinter machine decreases due to burning of lint. Sufficient gap between grate and saw blank is required.

B) Grates:- Following figure 4. shows that, grates are not in uniform shape and length.

Figure 4: Grates

Due to not in uniform grates shape and length, which result in seeds falling directly to the conveyor. Highest capacity lint removal, higher output and excellent quality of lint is desired.

V. OBJECTIVE

To modify design of grate. To improve production of grate in manufacturing machine. To minimize friction between grate and saw blank to avoid burning of linter. To increase quality of lint.



To obtain uniform length and shape of grates. To obtain highest capacity lint removal. To provide best solution for implementation.

VI. METHODOLOGY

While the problem is being investigated on different fronts, this dissertation work would focus on the new design grate, which will help to minimize the friction between saw blank and grate, the chances of burning of lint will minimize and Quality of lint can be increase. The above objectives may be achieved by grate die or changes in special bending machine.

VII. EXPECTED OUTCOME

New design of delinter machine grate will help for no friction between saw blanks and grates and no chances of burning lint. Highest capacity lint removal, Quality of lint and production in delinter machine will increase. It will help for increasing capacity tons per day.

REFERENCES

[1] Prof. Salwe R. B, Prof. U. D. Gulhane, Prof. R. J. Dahake, Akash M. Isadkar “Cost effective for automation for delinting machine”, International journal of research modern engineering research, April 2015, PP 1-6

[2] Thomas c. Wedegaertner, Gregory A Holt “Cottonseed delinters and methods”, United states of America, district of Columbia, US9115446 B2, 25 Aug 2015, PP 1-10

[3] Ugwn, K. C., Ogbuagu, N. J. and Egwuagu, O.M, “Optimization and performance evalution of cotton seed delinting machine”, Department of Agricultural and Bioresource Engineering, Enugu state university of science and technology, Enugu, Nigeria, Sep 2015, PP 1-4

[4] Sharma M. K, “New trends in cotton ginning and cotton seed processing”, Asian cotton research and development network, at Dhaka, Bangladesh, 20 June 2014, PP 1-9.

[5] Thomas c. Wedegaertner, Cotton Incorporated “Cottonseed delinters and methods”, United states of America, district of Columbia, US8336170 B2, 25 Dec 2012, PP 1-20

Design Of Delinter Machine Grate for High Removal Lint- A ... · [2] Thomas c. Wedegaertner,...

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