CC BY
27
Increase of an overall performance of a deduster on cotton ginning enterprises
Section 10. Technical sciences
DOI: http://dx.doi.org/10.20534/ESR-16-9.10-171-173
Abbazov Ilhom Zoporovich, Tashkent Institute of Textile and Light Industry, Uzbekistan E-mail: ilhom.abbazob.86@mail.ru Xojiyv Mukxsin Tadjiyvich, Supervisor, Dr., prof. Tashkent Institute of Textile and Light Industry, Uzbekistan E-mail: hadjievmuhsin@umail.uz Karshyev Baxtiyor Eshkobilovich, Tashkent Institute of Textile and Light Industry, Uzbekistan
Increase of an overall performance of a deduster on cotton ginning enterprises
Abstract: In this article different ways of improving dust filter type CS-6 used for cleaning dust-laden air in the factories are shown. If the cleaning results of dust filter will be improved, the ecology of environment will be less harmed.
Keywords: Dust, cotton, dust filter, concentration, cleaning, model, formula.
Introduction: In the cotton ginning factories dusty air is generally cleaned by utilizing dust filter. The process of primary cotton processing is mostly depends on the dust outlet and its incidence depends on binding of the variety, type of cotton and stages of the technological process.
Analyses: The whole dust coming from technological machines and system of pneumatic transport during the all stages of technological process of primary cotton processing (picking, drying, cleaning, separating, linter and pressing) is cleaned by dust filter. In the first stage there is more dust, so comparatively with the next stages its concentration is 1 m 3 in air up to 10 grams.
The size and weight of a dust atom is very important to find out the dust trajectory. Also, it is essential to know the air speed, dynamic and static pressure, as well as the size of the dust filter.
Taking into account the constructive composition of the dust filter, we'd like to compare the attempt of an atom in the work-in camera. Based on the scheme shown in picture 1, let's see the forces that effect on dust atom. In order to show trajectory in the air we will prove effective forces in the axis x, y, z.
Recommendation: In our opinion, it is possible to clean outlet of dusty waste coming from cotton ginning factories with the help of dust filters. In order to make work stable the device of dust filter, it is important to look through atom trajectory and parameters, as well as learning connection of the air flow. If the air flow entering to dust filter passes through the wall as more as possible, then dust atoms come a lot, moreover it is also depends on speed of air flow.
For that axis of OZ, should look vertically down, and then we will find out the condition of an atom in the cylindrical coordinate system.
x = r ■ cos^, y = r ■ sin^, z = 2 (1)
r, z are the united coordinates, and on (2) stage we will use Lagrange equation:
dT
(2)
Pic. 1. Forces influencing a dust of the holder
d_ (dT_ dz ^ dr d/ dz ^ d_ (dT_ dz ^ dz
here: T — kinetic energy of atom, and it is equal to the following:
( + r<j>2 + z2) (3)
-f=
or
-dT=q
-d-T = Q
& -
i
T = — m ir 2 V
Section 10. Technical sciences
Q Qy Q
— united forces:
(u -> )2 + (- r<j>)2 + (u - z)2
In this case F = c ■ p ■ — , 2 F vector's components which are directed along the coordinate axis are calculated by the following formula.
reaching to the bottom of cylinder can be stated as t=t0, then we offer the differential equation system of the attempt of dust atom through the wall when t>t0
pSf'
jj = crjj-F - f
2r ■ my '
Q = F = p iu - r ) F
PS«
2mr2
■U
rj
+ z„
(4)
z = c .P^ (u - z ). F - f .p^
2 ■ m
2 ■m
(6)
+ z„
Q, = F = cjf ( - z )• F
here: F _
ï=y!(- rf- z )2
here: F0 =^(vr- r)2 + ( - 4)2 + (vz - z)2
From (3) formula we can determine T and from (4) formulas we can take Q Qy Q and put them to (2) formula, so to find out r, y, z, we can make the following system of equations.
The system of equation (5) can be solved when initial condition r=r0, z=z0, 9=0 with the method of Runge-Kutte.
Using the solution of the equation system, we will determine the trajectory of dust filter coming to the wall. The time of dust atom
The system of equation (5) and (6) will be solved with the use of program Maple-8, so we indicate that general speed of air flow is
equal to m/s the axis of the real parts of the
separated dust filter make a stand than to shout down, speed inside the cylinder v0=0 m/s, then how long it takes air flow to reach dust filter, what is the speed of reaching the wall and time of being there.
From the 2nd picture, when v0=0, dust atoms are having different speeds vr and while moving along the dust filter walls. The trajectory of moving is given below.
Pic. 2. When u0=0, the trajectory of dust atoms while they are moving along the dust filter walls given below with ur and u^
1) u=45 m/s and =45 m/s; 2) u=32 m/s and v<=55 m/s; 3) u=0 m/s and uy=64 m/s; 4) u=63,99 m/s and vy=1 m/s.
From the given results we may conclude, that the speed of air flow coming inside by shout down is u0=64 m/s, the speed by the radius is u=0 m/s, the speed of the atom along the corner is equal to uy=64 m/s uy=64 m/s. The atom on the trajectory with beginning point M (0,3;0;0) can reach the camera walls in 0,138 seconds. After moving around about over 1,862 seconds it moves down to the bottom of dust filter. During this movement atom move around 7 time.
To be more confident about taken results and decrease the amount of dust we investigated dust filters CS-6 in the "Karasuv" cotton ginning factories.
The main purpose of investigation is learning the impact of the angle of air pipe entering dust filter to the dust concentration. For this we put air pipe entering into dust filter CS-6 horizontally under the angle a = 10°, a = 20° and a = 30° watched how the dust concentration is coming out (Picture 3).
Pic. 3. The scheme extended to dust filter
Possibility of silk coloring by natural dyes
If we turn the air coming to dust Ater using equipment of the We can see from the graph, if the angle of air pipe has a = 20°
laboratory which air permeability 10 l/min we were able to find out comparing to the axis, then dust concentration coming out would dust concentration via weight filter of dust concentration. Taken be lower. results are shown on the picture 1.
300
Й 0----------
1 2 3
Number of experiments, Pieces
Pic. 4. With connection to the dust filter for the air pipe as an axis with dependent outgoing dust concentration
1 -angle a = 10°, 2-angle a = 20°, 3-angle a = 30°
As the fiber condenser of the cotton ginning factory "Qorasuv" Conclusion: As a conclusion, we can say that if the dust filters
outgoing dust-air tube was set up as a horizontal axis of the dust filter replacing the air tube as horizon improved a = 20° to the atmo-under the corner of the turning in the operation, it was researched sphere, the outgoing dust concentration can be better for 40-60%.
the effect of the dust filter cleaning as the best fictional result. comparing with previous one.
References:
1. Хожиев М. Т., Аббазов И. З. "Пахтани ;айта ишлаш жараёнида чи;аётган чанг ;авони тозалашда заррачаларнинг моделини ;уриш" механика муаммолари журнали - № 3-4.
2. Гудим И., Сажин Б. С. Вихревые пылеуловители и их применение для обеспыливания воздуха на хлопкозаводах//Хлопковая промышленность. Тошкент - 1988. - № 4. С. 9-12.
3. Мирошниченко Г. И. «Основы проектирования машин первичной обработки хлопка» Москва «Машиностроение» - 1972. -486 с.
DOI: http://dx.doi.org/10.20534/ESR-16-9.10-173-176
Amirova Nodira, PhD., Tashkent Institute of Textile And Light Industry, Uzbekistan E-mail: sakhrukh.m@gmail.com
Possibility of silk coloring by natural dyes
Abstract: The development of production based on local resources and the expansion of corporate cross-cutting industry is the main source of economic development. By establishing production based on local resources which replacing imports of these products can achieve the development of the economic independence of the country. Performing program of localization using materials by local secondary resources decrease dependence of external factors and fills markets with consumer products, as well as create opportunities to save [1].
Keywords: Coloring; intensity of color; dyeing; natural dyes; mordant's; silk.
Introduction: In the process of development of our Republic a lot of attention is paid to the implementation in various sectors of non-waste technologies with the use of secondary resources and local chemicals. Therefore we need new innovative ideas aimed at the conservation of natural resources and macrobiotic.
One of the advanced and developing industries of the Republic of Uzbekistan is the textile and light industry. Taking into account
the level of population can be easy to predict an impressive amount of demand for various textile products. On the assumption of the result in the development and introduction of new resource-saving technologies based on the replacement of expensive materials local secondary resources, significant economic benefits the country and tangible environmental and social efficiency in the industry can be dramatically achieved [2].
