Volume 05 Issue 03-2025
17
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
03
Pages:
17-26
OCLC
–
1368736135
A
BSTRACT
The article analyzes the mesh surface, which is one of the main working parts of the raw cotton cleaning
process at cotton ginning plants. The types and sizes of mesh surfaces used in cotton ginning plants, as well
as their useful surface area, were determined using the Solidworks program. The useful surface angle of
the mesh surface relative to the center of the spiked drum was determined at various values. As a result,
graphs of the change in the useful surface relative to the center of the spiked drum are presented.
K
EYWORDS
Cotton, fiber, seed, lint, separator, stone catcher, cyclone, fan, pipe, scraper, mesh surface, vacuum valve,
gin, saw, linter, feeding roller, outlet pipe, shaft, screw, gasket.
I
NTRODUCTION
In our republic, large-scale measures are being
implemented and certain results are being
achieved in the development of the cotton industry,
modernization and technical re-equipment of
cotton ginning enterprises, increasing the
profitability of production and processing of raw
cotton, as well as increasing the competitiveness of
manufactured products. In particular: Decree of the
Journal
Website:
http://sciencebring.co
m/index.php/ijasr
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Research Article
DETERMINING THE USEFUL SURFACE OF THE GRID USED IN
THE CLEANING PROCESS AT COTTON GINNING ENTERPRISES
Submission Date:
January 10,
2025,
Accepted Date:
February 19, 2025,
Published Date:
March 13, 2025
Crossref doi:
https://doi.org/10.37547/ijasr-05-03-03
Salomova Mashhura Arabboy qizi
PhD, Namangan State Technical University, Namangan, Uzbekistan
Yuldashev Khurshid Khazratkulovich
PhD, Jizzakh Polytechnic Institute, Jizzakh, Uzbekistan
Muradov Rustam Muradovich
Professor, Namangan State Technical University, Namangan, Uzbekistan
Volume 05 Issue 03-2025
18
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
03
Pages:
17-26
OCLC
–
1368736135
President of the Republic of Uzbekistan dated
January 28, 2022 No. UP-60 "On the Development
Strategy of New Uzbekistan for 2022-2026,"
including..."ensuring the stability of the national
economy and continuing the industrial policy in the
new domestic product, aimed at increasing the
volume of industrial production by 1.4 times, with
an increase in the volume of production of textile
industry products by 2 times..." important tasks
have been defined.
In the implementation of these tasks, in particular,
it is important to increase the efficiency of the
cotton cleaning process, effectively purify dusty air,
improve the existing equipment and technologies
at the enterprise, and determine their optimal
values.
M
ATERIALS AND METHODS
At cotton ginning enterprises, the cleaning of raw
cotton is one of the main processes. The main
working parts of the cleaning process are the
spiked drum and the mesh surface. In cotton
ginning plants, mesh surfaces (horizontal or
vertical grids, sieves) are widely used for
separating cotton from large and small impurities.
Their main function is to capture various wastes in
cotton fiber, such as leaf debris, branches, small
stones, and other impurities. The main function of
mesh surfaces is to separate leaf remnants, shoots,
seed coat, soil, and other impurities.
Types of mesh surfaces used in cotton ginning
enterprises:
When the cotton flow passes through sieves, it
separates small impurities through holes of various
sizes. Vibrational or mechanical movement
increases efficiency.
Drum mesh separators: Have holes of various sizes
on the inner surface, which separate dust and small
impurities through rotational movement. It is often
used in conjunction with an aspiration system.
Grate-type mesh surfaces: In these devices, large
impurities are separated through grates or
perforated plates. Usually, it is located horizontally
or obliquely, and the speed of cotton movement is
controlled.
The concept of a useful surface is the part of the
mesh surface that is effectively processed within
the total area. That is, the area of the mesh surface,
which actively participates in the separation of
trash impurities and dust retention during the
cotton cleaning process, is considered a useful
surface.
The main factors influencing the usable surface are
the shape and location of the meshes, which
determine the efficiency of the usable surface.
Inclined or horizontally arranged meshes help to
optimize airflow. The size of the holes and their
density directly affect the effective surface area.
Large holes serve to separate large impurities,
while small holes serve to trap fine dust. If the
cotton flow velocity is too high, the efficiency of the
usable surface may decrease. By choosing the
optimal speed, it is possible to effectively separate
impurities. Some mesh surfaces are used in
conjunction with an aspiration system, which
Volume 05 Issue 03-2025
19
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
03
Pages:
17-26
OCLC
–
1368736135
allows for the effective capture of dust and light
impurities.
By choosing the optimal diameter of the mesh
holes, inclined placement of the mesh surface,
installation of an additional aspiration system, and
the use of vibration or rotary mechanisms, it is
possible to increase the effective surface area of
mesh surfaces used in cotton ginning enterprises.
Analysis of the research results
Mesh surfaces (Fig. 1), used in cotton ginning
enterprises, are woven from steel wire and made
by making holes in steel sheets, can be made of
solid sheet with an eye of various shapes or ribs of
various shapes.
а)
б)
в)
Figure 1. Diagram of mesh surface types.
a). woven from steel wire. b), c). made of sheet metal with various holes..
1-table
№
Size of holes on the mesh surface
1
The mesh surface hole length is
18 мм
2
The mesh surface hole width is
5 мм
3
The distance between two holes on the mesh surface is
5 мм
4
Sheet thickness
3 мм
5
The distance between adjacent mesh surfaces is
3 мм
To determine the useful surface area of the mesh
surface, the angle of the mesh surface relative to
the center of the spiked drum was determined
using the solidworks program at various values.
To obtain the net surface area, it is necessary to
determine the net surface area. For this, the
circumferential length of the mesh surface relative
to the center of the spiked drum was determined.
In the UHK unit, the circumferential length of the
Volume 05 Issue 03-2025
20
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
03
Pages:
17-26
OCLC
–
1368736135
mesh surface is 1343.92 mm. If we determine the
length of the above-
mentioned angles α, taking into
account their angles, then at an angle α1=90o
relative to the center of the spiked drum, the length
of the mesh surface was 339.41 mm, at an angle
α2=110o the length of the mesh surface was 393.19
mm, and at angles α3=130o and α4=150o the
length along the width of the mesh surface was
435.02 mm and 559.97 mm. From this it is evident
that by increasing the angle of the mesh surface
relative to the center of the spiked drum, we
observed an increase in the length along the width
of the mesh surface, which, of course, leads to an
increase in the useful surface. (Fig. 2)
Based on these data, we determine the area at
which the holes are located at various angles
α1=90o, α2=110o, α3=130o, α4=150o relative to
the center of the spiked drum.
Initially, the angle of the mesh surface relative to
the center of the spiked drum α1=9
0o, the
circumferential length of the mesh surface 339.41
mm, and the useful surface area of the mesh surface
1900 mm were determined using the Solidworks
program. (Fig. 3)
A) when
α1=90
̊
B) when
α2=110
̊
Volume 05 Issue 03-2025
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International Journal of Advance Scientific Research
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VOLUME
05
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Pages:
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OCLC
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1368736135
C) when
α3=130
̊
D) when α4=150°
Figure 2. Different values of the angles of the mesh surface relative to the center of the spiked
drum
1-spike drum, 2-grid surface.
Figure 3. Data on the mesh surface with an open hole at an angle α1=90o relative to the center of
the spiked drum.
Volume 05 Issue 03-2025
22
International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
05
ISSUE
03
Pages:
17-26
OCLC
–
1368736135
Fig. 3 shows the data of the mesh surface with a hole, as can be seen, the mass of the mesh surface was
29448.54 grams.
Figure 4. Area of the mesh surface at an angle α1=90o relative to the center of the spiked drum
Using the evaluate program of the Solidworks program, we determined the area of the mesh surface
363596.47 mm2 using the measuare button. At the next stage, the mass and surface area of the sheet before
perforation were determined.
Volume 05 Issue 03-2025
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VOLUME
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OCLC
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Figure 5. Sheet mass and surface area before perforation
It can be seen that the mass of the mesh surface was
57034.04 grams, and the area was 716283.13
mm2.
To find the useful surface area, we subtract the
total surface area from the sheet area after the hole
has formed:
66
,
52686
3
363596.47
13
.
716283
=
−
=
−
=
t
f
F
F
F
мм
2
,
Substituting the obtained results into expression
(1):
%
2
,
49
%
100
13
,
716283
352686,66
.
.
=
=
yu
f
k
We can also determine how much we have reduced
the mass of the list by dividing it by dividing the
mass after the mass from the mass before it
(usually it corresponds to the coefficient of useful
surface):
48.3%
%
100
04
.
57034
29448,54
-
57034.04
=
Consequently, the coefficient of effective area of the
adopted mesh surface is equal to, and we achieve a
48.3% reduction in the sheet mass.
At the next stage, to determine the useful surface
area of the mesh surface, the values of the angle of
the mesh surface relative to the center of the spiked
drum at various values were also determined using
the solidwors program and are presented in Table
2.
2-Table
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VOLUME
05
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Pages:
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OCLC
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1368736135
№
Angle of the mesh
surface relative to
the center of the
spiked drum
Circular
length of the
mesh surface
Grid
surface
length
Sheet
lightening
Usable
surface
1
α
1
=90º
339,41 mm
1900 mm
48.3%
49.2 %
2
α
2
=110º
393,19 mm
1900 mm
49,9 %
50,4 %
3
α
3
=130º
435,02 mm
1900 mm
49 %
49,3%
4
α
4
=150º
559,97 mm
1900 mm
45,4%
50,3%
The data presented in Table 3 are represented
graphically. The blue line represents the lightening
of sheet mass, and the red line represents the
useful surface area.
In the article, along with determining the effective
surface area of the mesh surface, the amount of
sheet weight reduction was also determined using
the program. Using the Solidworks program, based
on the analysis of various values of the angle of the
mesh surface relative to the center of the spiked
drum, it was determined how much the useful
surface area increases at each value and how much
the sheet mass is lightened. The graph shows the
change in sheet mass efficiency (blue line) and
useful surface area (red line) at different values on
the α axis.
C
ONCLUSIONS
With the help of the Solidworks program, work was
carried out on the design of the mesh surface,
which is one of the main working parts of cleaning
machines used for cleaning cotton at cotton ginning
Volume 05 Issue 03-2025
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International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
05
ISSUE
03
Pages:
17-26
OCLC
–
1368736135
enterprises, and the optimal value of the angle of
the mesh surface relative to the center of the spiked
drum was determined. It can be seen that the
highest efficiency of sheet mass and the highest
percentage of the usable surface were achieved at
an angle of the mesh surface to the center of the
spiked drum at 1100°. If the mesh surface is
applied in the production process at an angle of
1100 relative to the center of the spiked drum, then
the efficiency of work increases, i.e., the efficiency
of cleaning cotton from impurities increases.
R
EFERENCES
1.
Salomova, M., Salokhiddinova, M., &
Muradov, R. (2023, June). How to increase
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AIP Publishing.
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Rahimov, F., Rajapova, N., & Salomova, M.
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Advanced Research Science, Engineering
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Tokhirova, M., Khasanov, A., Salomova, M.,
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Nodirbek, M., Shukhratjon, K., Mashkhura,
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Toshpo’latov
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342.
извлечено
от
http://nauchniyimpuls.ru/index.php/noiv
/article/view/14695
9.
Якубов, И. (2021). Саломова Машхура,
Маматқулов
Орифжон.
Чигит
шикастланишини
камайтириш
мақсадида сепаратор конструкциясини
такомиллаштириш//Халқаро
илмий
-
амалий конференсия материаллари
тўплами, 11(23), p647
-649.
Volume 05 Issue 03-2025
26
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
05
ISSUE
03
Pages:
17-26
OCLC
–
1368736135
10.
Rahimov, F., Rajapova, N., & Salomova, M.
(2019). R. Muradov Create a Device that can
Remove Heavy Components from the
Chassis Chamber. International Journal
Advanced Research Science, Engineering
and Technology//Of ijarset, 6(7), 2350-
0328.
