Volume 05 Issue 05-2025
9
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
05
Pages:
9-15
OCLC
–
1368736135
A
BSTRACT
In the article the grate, which is the main working part of the process of cotton cleaning at cotton ginning
plants, is improved, and also the useful surface of the improved grate is determined using modern
computer programs. As a result, a certain reduction of the useful surface of the grate and its mass compared
to the existing grate has been achieved.
K
EYWORDS
Cotton, fiber, seed, lint, cleaner, calosnik, mesh surface, inlet pipe, outlet pipe, saw gin, roller gin, press,
stone catcher.
I
NTRODUCTION
Cotton ginning plants are one of the main parts of
the cotton-textile cluster system. At cotton ginning
plants, cotton raw material is received from farms
and processed to prepare finished bales.
The main process in the plant is the cotton cleaning
process. The contaminants released during the
cleaning process vary in origin, size and the
technical technologies used in the cleaning process
to remove contaminants.
Journal
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Research Article
Determining the Effective Surface Area of The Enhanced
Grate Structure
Submission Date:
March 07,
2025,
Accepted Date:
April 04, 2025,
Published Date:
May 06, 2025
Crossref doi:
https://doi.org/10.37547/ijasr-05-05-02
Imomnazarova Nurzhakhon Toktaboevna
Researcher, University of Business and Science, Uzbekistan
Salomov Mashkhura Arabboy kizi
Doctoral student, Namangan State Technical University, Namangan, Uzbekistan
Muradov Rustam Muradovich
Professor, Namangan State Technical University, Namangan, Uzbekistan
Volume 05 Issue 05-2025
10
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
05
Pages:
9-15
OCLC
–
1368736135
Contaminants in raw cotton are categorized by
origin into active and passive contaminants. Active
impurities are located inside the raw cotton.
Passive impurities are located on the surface of the
raw cotton. Therefore, in the cotton processing
process, the process of cleaning of minor
impurities is carried out first. Then the process of
cleaning from coarse impurities is carried out. Fine
and coarse raw cotton impurities differ in size, and
impurities smaller than 10 mm are called fine
impurities and impurities larger than 10 mm are
called coarse impurities. In cleaning the above
mentioned impurities, the cleaning process is
carried out in technical technologies consisting of a
cone drum, a mesh surface, a saw drum and a shoe
drum.
Nowadays cotton cleaning is considered as one of
the main processes of cotton ginning plants. In
farms, it is very relevant to carry out research and
development work on increasing the number of
weed impurities in the cotton composition and
efficient technologies of the cleaning process due to
the fact that the cotton cleaning process is carried
out in machine picking.[1.2.3]
In the cotton cleaning process, grates are used to
clean the cotton and separate the harmful
substances. These grates play an important role in
separating the outer shell of cotton. However, their
use has some disadvantages. Incomplete cleaning
of cotton on the grate can adversely affect the
quality of raw cotton. Based on the above
disadvantages, in order to improve the purification
efficiency, the authors propose a new calosnik. (Fig.
1). As a result of the introduction of this grate in the
production process is achieved an increase in the
efficiency of cotton cleaning with an increase in the
useful surface compared to the existing
grate.[4.5.6.7].
Figure. Improved grate.
When cleaning raw cotton from impurities, if large
impurities are trapped between the grates, they
can also fall through the oval holes on the grate
surface. Both fine and coarse contaminants are
caught. Since the distance between the saw drum
Volume 05 Issue 05-2025
11
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
05
Pages:
9-15
OCLC
–
1368736135
and the grate is 12-14 mm, the raw cotton bolls are
also shredded when they fall into this gap.
This results in the appearance of fine
contaminants. Therefore, when cleaning raw
cotton in the UCC unit, the sequence of operation of
staking and sawing drums is set repeatedly. In the
process of cleaning from large impurities in the
saw drum small impurities are formed, so raw
cotton is again fed to the stake drum. A mesh
surface is formed in the introduced grates with
holes. As a result, the cleaning of fine impurities in
the raw material facilitates the operation of the saw
drum, which leads to an increase in efficiency and
quality.
Figure. Data of calosniki with an open hole.
Figure 1 shows the data of the gasket with a hole,
as can be seen, the mass of the gasket was 393.01
grams.
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International Journal of Advance Scientific Research
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2750-1396)
VOLUME
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Pages:
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1368736135
Figure 3. Area of the gasket surface.
Using the evaluate program of the Solidworks
program, we determined the area of the mesh
surface 35764.97 mm2 using the measuare button.
At the next stage, the mass and surface area of the
grate before perforation were determined.
Volume 05 Issue 05-2025
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International Journal of Advance Scientific Research
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2750-1396)
VOLUME
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Figure 4. Mass and surface area of the gasket before perforation
As can be seen, the mass of the mesh surface was
406.31 grams, and the area was 36892.85 mm
2
.
To find the useful area
f
F
, we subtract the sheet
area
F
after the hole is formed from the total area
t
F
:
1,127.88
35764.97
85
.
36892
=
−
=
−
=
t
f
F
F
F
mm
2
,
Substituting the obtained results into expression
(1):
%
05
.
3
%
100
85
.
36892
1,127.88
.
.
=
=
yu
f
k
We can also find the percentage of the weight we've
lightened by subtracting the next weight from the
previous weight and dividing it by the previous
weight (which usually corresponds to the
efficiency coefficient):
%
27
.
3
%
100
406.31
393.01
-
406.31
=
Consequently, the effective surface area coefficient
of the mesh surface adopted by us is equal to
%
3.05
.
.
=
yu
f
k
, and a 3.27% reduction in the grate
weight was achieved.
We conducted experiments by installing 10 of them
on the bottom of the saw drum with a grate with a
perforated surface. Therefore, the useful surface,
Volume 05 Issue 05-2025
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International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
05
Pages:
9-15
OCLC
–
1368736135
determined by us using the Solidworks program,
was calculated for an improved grate. We also
calculated the location of the grate with 10 holes
located at the bottom of the saw drum.
In this case, the effective surface area coefficient
was
%
5
,
30
10
*
3.05
.
.
=
=
yu
f
k
. A 32.7% reduction
in the grate weight was achieved.
Figure 5. Results of the cotton Cleaning Process
In practical experiments, an experiment was also
conducted in the separation of raw cotton cleaning
from large weed impurities on the UCC unit with an
improved grate. The purpose of the improved
design is simultaneous cleaning of raw cotton from
coarse and fine impurities. Experiments were
conducted on cotton variety Andijan-35. In the
experiment it was found that 350 grams of large
and 150 grams of small impurities were extracted
from ten kilograms of cotton. Laboratory analyses
conducted after the experiments showed that the
content of weed impurities in raw cotton decreased
from 8.66% to 2.01%. Whereas in the existing
calosnik the contamination of raw cotton was
reduced by 3.03%, in our improved calosnik it was
reduced by 2.01%. This result determines the
effectiveness of the conducted experiment, because
in the UCC unit raw cotton is cleaned in three
consecutive stages. First it is cleaned on the stake
drum, then on the saw drum and again on the stake
drum. The result obtained is the conclusion of the
experiment conducted on the saw drum itself.
The purpose of the work carried out by the authors
is to increase the efficiency of cleaning by
improving the design of the UCC unit when
cleaning raw cotton from weed impurities. The
new design resulting from our above research
work is characterized by the fact that it performs
two functions simultaneously. The experiment
conducted on the design evaluates the economic
efficiency. Improvement in cleaning efficiency is
achieved by increasing the usable surface area due
Volume 05 Issue 05-2025
15
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
05
Pages:
9-15
OCLC
–
1368736135
to the formation of an opening in the grate with
aperture.
R
EFERENCES
1.
Salomova, M., Salokhiddinova, M., & Muradov,
R. (2023, June). How to increase the effect
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mobile device. AIP Conference Proceedings,
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2.
Yakubov, I. (2021). Salomova Mashkhura,
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design to reduce grain damage. In Proceedings
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–
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Salomova, M., Rakhimov, F., & Kasimov, Kh.
(1992). Improvement of pneumatic transport
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Imomnazarova, N. T., & Abdulkhayev, K. (2025).
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–
15.
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Imomnazarova, N. T., & Muradov, R. M. (2024).
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organlarini tahlili. pp. 178
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Salomova, M. A. Q., Yuldashev, K. K., & Muradov,
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