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Improvement of the Process of Separation of Cotton Fiber from Seeds

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Engineering（科研） 2022年第12期14卷 567-577页

作者： Sharibboy Ergashev Khayrullo Sharipov olimjon sarimsakov Engineering and Construction Institute Namangan Uzbekistan Institute of Engineering and Technology Namangan Uzbekistan

The differential equation, obtained as a result of the theoretical study of the movement of the bare seed on the surface of the grate of the saw gin, made it possible to determine the trajectory of the movement of the seed. The rib is one of the main working bodies of the saw gin. It serves for the free passage of the saw blades through it into the working chamber, for the withdrawal of the fiber caught on the saw teeth after separating it from the seed. A number of studies have been carried out to improve the working elements of the saw gin. The purpose of the research is to create the possibility of timely withdrawal of bare seeds from the working chamber of the saw gin by creating a concavity on the working surface of the grate. The use of the Euler equation for the movement of bare cotton seed along the grate contour, taking into account its speed V, density ρ, pressure P, made it possible to obtain a graph of seed distribution along the grate contour. An experimental 30-saw gin was developed and manufactured, the research carried out on it allowed to determine the rational parameters of new grates, which are recommended for introduction into production. The dependence of the location of the rectilinear part of the general contour on the shape of its convexity and concavity is determined. Based on the above equations, using separate functions, we present the view of the grate profile in the coordinate system modeled on the MAPLE-17 program.

关键词： Cotton Saw Gin Grates Ginning Fiber Seeds Concave Surface Seed Cotton Ginning of Cotton Roll Box Seed Roll Profile of the Roll Box Speed of the Feed Rolls Density of the Seed Roll

Investigation of Changes in Flow Parameters along the Transport Line in Installations for Pneumatic Transport of Cotton

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Engineering（科研） 2022年第1期14卷 76-83页

作者： Mahfuza Gapparova Bahrom Mirzaev Mutalov Muhammadodil olimjon sarimsakov Tashkent Institute of Textile and Light Industry Namangan Uzbekistan Fergana Polytechnic Institute Namangan Uzbekistan Namangan Institute of Engineering and Technology Namangan Uzbekistan

The article presents the results of a study of changes in the parameters of the flow, velocity and pressure of air along the cotton transportation line in pneumatic transport installations and their dependence on the parameters of the pipeline. The purpose of the research is to theoretically substantiate the choice of the pipeline diameter depending on the properties of the material (cotton), the required processing capacity and pipeline throughput. In the research, an analytical method was used to study changes in the pressure of the air flow along the transportation line at different pipeline diameters. It is established that, according to the existing calculation method, the flow pressure along the transportation line is reduced to zero. At the same time, various scientists have proposed various analytical and empirical dependencies, which, in turn, give different ideas about the resistance of the inner surface of the pipes to the movement of air and material flow and do not describe the real situation, especially when transporting material from a long distance. This requires in-depth theoretical and applied research to establish real patterns of changes in flow parameters along the material (cotton) transportation line.

关键词： Cotton Pneumatic Transport Installations Flow Parameters Static Dynamic and Total Pressure

Changing the Air Parameters in the Cotton Pneumatic Transport Pipe

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Engineering（科研） 2023年第2期15卷 68-74页

作者： sarimsakov olimjon Sattarov Nurillo Oripov Nodirbek Kholmirzaev Farhod Namangan Institute of Engineering and Technology Namangan Uzbekistan Fergana Polytechnic Institute Fergana Republic of Uzbekistan

This scientific article examines the issue of changes in the density and speed of the airflow in the pipeline pneumatic conveying equipment used in ginneries, analyzes the causes of changes in the density and speed of... 详细信息

关键词： Pneumatic Transport Actual Pressure Vacuum Monomeric Pressure Ventilator Cotton Cleaning

Theoretical Features of the Process Cleaning Zone between Sections of Raw Cotton from Weed Impurities

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Engineering（科研） 2020年第10期12卷 739-747页

作者： Isaev Shahboz Sultanov Otabek Goybnazarov Egamnazar sarimsakov olimjon Namangan Institute of Engineering and Technology Namangan Uzbekistan

The article proposes to use the Euler equations to describe the motion of a stationary stream in the cleaning zones, which allows us to determine the laws of the distribution of pressure, density and speed along the arc of contact of the moving layer of raw cotton with the surface of the mesh during impact with spikes on the pulp. It was found that the pressure, density and flow velocity along the cleaning arc as a result of the hammer spikes change stepwise with decreasing pressure and density and increasing flow velocity along this arc.

关键词： Friction Force Cotton Mass Dry Friction Force Feed Rollers Density Angular Velocity Element Motion Elastic Element Detail

Investigation of the Properties of Fibrous Cotton Seeds, for Sorting on a Mesh Surface

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Engineering（科研） 2018年第9期10卷 572-578页

作者： Avazbek Obidov Khamid Akhmedhodjaev olimjon sarimsakov Qurbonali Holikov Namangan Institute of Engineering and Technology Namangan Uzbekistan

In the article the research of cotton seeds for the purpose of increasing the fiber in the enterprise is investigated, separated from the mass of the derivatives of ginning of fibrous seeds by means of effective clean... 详细信息

关键词： Cotton Seeds Cotton Fiber Litter Technical Seeds Sowing Seeds Lint Gin Sorting Moisture Selection Variety Fibrous Seeds

About the Change in Air Pressure in the Pipeline during the Pneumatic Transportation of Cotton

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Engineering（科研） 2022年第7期14卷 228-234页

作者： Farhod Kholmirzaev Maftuna Yusupova Abdul-Malik Kayumov olimjon sarimsakov Namangan Institute of Engineering and Technology Namangan Uzbekistan

The article is devoted to the study of the issues of determining the patterns of changes in air pressure along the length of a pneumatic transmission pipeline for raw cotton at different flow parameters and different pipeline diameters. Theoretical studies have proved the reduction of static and total pressure along the line of pneumatic cotton transportation. The dependence of the pressure change on the diameter of the transport line and the aerodynamic drag of the pipeline is obtained. The results obtained are recommended for use in the design of raw cotton pneumatic transport systems.

关键词： Pneumatic Conveying Pipeline Raw Сotton Air Pressure A Fan

The Mathematical Model of Seed Movement on a Concave Profile Rib

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Engineering（科研） 2020年第3期12卷 216-227页

作者： Khayrullo Sharipov Khamit Akhmedxodjayev Mukhammadjon Tojiboyev olimjon sarimsakov Department of Technology of Primary Processing of Natural Fibers Namangan Institute of Engineering and Technology Namangan Uzbekistan

The differential equations of movement along the concave profile of the grate, consisting of three broken lines, are integrated on Maple 9.5 under initial conditions, using separate functions, and graphs of the dependence of movement and speed over time are presented. The graphs show the patterns of change in displacement and speed at different angles, friction coefficient of seeds along grate with a broken line of a concave profile.

关键词： Ginning of Cotton Saw Gin Stand Roll Box Seed Roll Rib Concave Cotton Seed

Designing a New Design of a Loading Cylinder for Pneumomechanical Spinning Machines

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Engineering（科研） 2018年第6期10卷 345-356页

作者： Mirzaev Otabek Abdukarimovich Akhmedov Kamol Ibragimovich sarimsakov olimjon Sharipjanovich Tashkent Institute Textile and Light Industry Tashkent Uzbekistan Namangan Institute of Engineering and Technology Namangan Uzbekistan

The article explores the issue of designing a new design of a loading cylinder with a casing filled with vulcanized rubber for pneumomechanical spinning machines. The theoretical calculation of the deformed state of a cylindrical shell filled with vulcanized rubber is given. Deflections and stresses in the rubber layer are determined, which we use approximately for the Ritz methods. The theory of the radial and axial moving rubber layer was analyzed. The specific energy of deformation of a cylindrical layer of a compound cylinder is determined. The statics of the case and the loading cylinder of spinning machines are thoroughly studied.

关键词： Rubber Moving Euler Equalization Ritz Method Radial Directions Cylinder Young’s Module

The Movement of a Mixture of Cotton with an Air Stream during Pneumatic Transport by Pipeline of Variable Cross Section

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Engineering（科研） 2019年第8期11卷 531-540页

作者： Ibrohimjon Tursunov Nodira Rajapova olimjon sarimsakov Botirjon Mardonov Department of Technology of Primary Processing of Natural Fibers Namangan Institute of Engineering and Technology Namangan Uzbekistan Department of Higher Mathematics Tashkent University of Information Technologies Tashkent Uzbekistan

The article considers the movement of a mixture of air and raw cotton through a pipeline with a variable cross-section as a multi-speed heterogeneous medium. The regularities of the movement of components inside the pipeline, the equation of change in the porosity of cotton, air pressure and component velocities in time and along the transportation line are obtained. It was found that in the initial 20 - 25 m part of the pneumatic transport pipe there is a sharp decrease in pressure and air flow velocity, while the speed of cotton increases rapidly due to which there is a strong deformation of cotton stretching under the influence of aerodynamic force, which occurs due to the difference in the velocities of the components of the mixture, as a result of which the cotton loosens, and its porosity increases intensively.

关键词： Air Pressure Fiber Pipeline Porosity Pneumatic Transportation Raw Cotton The Mixture