ANALYSIS OF IMPROVING CLEANING EFFICIENCY IN FIBER CLEANING MACHINE IN IP SPINNING FACTORIES

ABSTRACT

One of the most necessary factors for increasing the efficiency of production in spinning enterprises is to increase income by increasing the quality of the product, effective use of raw materials and fiber waste, and reducing production costs. This study investigates methods to enhance the cleaning efficiency of fiber cleaning machines within IP spinning factories. The research employs a multidisciplinary approach, combining empirical observation, data analysis, and simulation techniques. Through a thorough review of existing cleaning methodologies and the analysis of machine performance data, the study identifies key factors affecting cleaning efficacy. It proposes targeted strategies, including mechanical and technological interventions, to optimize cleaning processes. The research highlights the significance of factors such as airflow velocity, sieve design, and material handling procedures in improving cleaning outcomes. Furthermore, the study underscores the broader implications of enhanced cleaning efficiency, including improved product quality, reduced waste, and enhanced sustainability. Overall, this research contributes to advancing operational capabilities and promoting innovation in the textile manufacturing sector.

АННОТАЦИЯ

Одним из наиболее необходимых факторов повышения эффективности производства на текстильных предприятиях является увеличение доходов за счет повышения качества продукции, эффективного использования сырья и отходов волокна, снижения себестоимости продукции. В этом исследовании изучаются методы повышения эффективности очистки машин для очистки волокна на прядильных фабриках IP. В исследовании используется междисциплинарный подход, сочетающий эмпирические наблюдения, анализ данных и методы моделирования. Благодаря тщательному анализу существующих методологий очистки и анализу данных о производительности машин исследование выявило ключевые факторы, влияющие на эффективность очистки. Он предлагает целевые стратегии, включая механические и технологические вмешательства, для оптимизации процессов очистки. Исследование подчеркивает важность таких факторов, как скорость воздушного потока, конструкция сит и процедуры обработки материалов, для улучшения результатов очистки. Кроме того, исследование подчеркивает более широкие последствия повышения эффективности очистки, включая улучшение качества продукции, сокращение отходов и повышение устойчивости. В целом, это исследование способствует развитию производственных возможностей и продвижению инноваций в секторе текстильного производства.

Keywords. Cotton fiber, cleaning aggregates, impulse , fiber beating in the free state, pile drum, fiber beating in the compressed state.

Ключевые слова. Хлопковое волокно, агрегаты для очистки ворса, импулс, пробивка волокна в свободном положении, барабан со стопкой, пробивка волокон в сжатом состоянии.

Introduction. All raw materials produced in spinning enterprises must have certain required quality indicators. The quality indicators should meet the requirements of the established standard. Compliance, in turn, requires compliance with a specific standard or other regulatory document. The quality of any product is determined by the compliance of raw materials with documents. The quality of the finished product can be considered as the result of proper and targeted processing of raw materials.

One of the most necessary factors for increasing the efficiency of production in spinning enterprises is to increase the income by increasing the product quality, using raw materials and fiber waste effectively, and reducing production costs.

In the textile sector, attention is focused on solving problems such as the efficient use of fibers in the production of cotton fiber products, reducing their cost by increasing their share, preserving the natural properties of valuable fiber, and preventing the addition of spinable fibers to the waste composition.

Fiber cleaners are used effectively to carry out the fiber cleaning process in production enterprises. Its main task is to clean cotton fiber from impurities while preserving its natural properties.

Modern technology in the management of equipment requires not only their operation and maintenance but also control of the parameters of operation and technological indicators of the equipment. In this place, aggregates produced by several companies are managed in a specific order and system. What they have in common is that the equipment is controlled by a microcomputer.

Methods:

1. Literature Review: Conduct a comprehensive review of existing literature on fiber cleaning machines, IP spinning processes, and cleaning efficiency improvement strategies. This includes academic journals, conference papers, industry reports, and relevant online resources.

2. Data Collection: Gather data from multiple IP spinning factories regarding their current fiber cleaning processes, equipment configurations, and cleaning efficiency metrics. This may involve site visits, interviews with factory personnel, and access to operational data.

3. Experimental Design: Design experiments to evaluate the effectiveness of different cleaning techniques, parameters, and equipment configurations in improving cleaning efficiency. This may include testing various cleaning agents, nozzle designs, pressure settings, and process parameters.

4. Performance Evaluation: Measure cleaning efficiency using quantitative metrics such as fiber contamination levels, cleanliness indices, and production downtime due to cleaning-related issues. Compare the performance of different cleaning methods and identify areas for improvement.

5. Statistical Analysis: Analyze the collected data using statistical methods to identify significant factors affecting cleaning efficiency and their interactions. This may involve regression analysis, analysis of variance (ANOVA), and other multivariate techniques.

Results:

1. Effectiveness of Cleaning Techniques: Evaluate the performance of different cleaning techniques, including air-jet cleaning, water-jet cleaning, suction cleaning, and combination methods. Determine the impact of each technique on fiber contamination removal and overall cleaning efficiency.

2. Optimal Process Parameters: Identify the optimal process parameters, such as nozzle pressure, nozzle distance, cleaning agent concentration, and cleaning cycle duration, for maximizing cleaning efficiency while minimizing energy consumption and production downtime.

3. Comparison of Equipment Configurations: Compare the cleaning efficiency of different fiber cleaning machine configurations, including single-stage vs. multi-stage cleaning systems, continuous vs. batch cleaning processes, and manual vs. automated operation.

4. Cost-Benefit Analysis: Assess the cost-effectiveness of implementing various cleaning improvement strategies, considering factors such as equipment investment, operating costs, maintenance requirements, and potential productivity gains.

5. Recommendations for Improvement: Based on the experimental findings and data analysis, provide recommendations for optimizing fiber cleaning processes in IP spinning factories. This may include modifications to equipment design, changes in operational procedures, and adoption of advanced cleaning technologies.

The number of revolutions of the cleaning drums is continuously monitored and displayed. When the type of cotton fiber changes, the necessary parameters are set electromechanically.

As we said above, the cleaning machines used in spinning enterprises can be conditionally divided into three types: primary, main, and aerodynamic cleaning machines. The use of cleaning machines in the cleaning units in the above order is aimed at reducing fiber damage and increasing product quality.

In this method, the military forces of the cleaning bodies are directed to the tuft, which protrudes from under the supply bodies. Under the influence of shocks, the bunch shakes, and deforms, and then small pieces are separated from the bunch.

In mechanics, these impacts are called force impulses. The impulse of the force acting on the bundle at any point is equal to the force exerted in a certain time .

                                                                        (1. 1 )

where - impact force applied to the tuft;

- the time of minting, in very small amounts.

In order to reduce the mutual resistance of the fibers in the bundle, it is necessary to determine the pulse size. As the speed of rotation of the cleaning device increases in the machine , the impact force increases, and this force reduces the resistance of the compressed fibers.

Figure 1. Punching fibers in a compressed state

The impact of the force acting on the bunch when it is struck (Fig. 1) is directed along the trajectory of the striking part of the cleaning body to the point of striking. We divide it into two generating forces:

                                                                           (1.2)

the force is directed to the line connecting the point of impact with the center of the lower supply cylinder. As a result of this action, the fiber tuft is compressed and compacted and transmits this force to the lower supply cylinders.

the force is directed perpendicular to the point of impact , it affects the connection of the fibers in the barrel breaks this connection, and separates the fibers from the barrel.

In order to reduce the knots in the fiber in the compressed state, the impact must be strong, because a certain part of the force is spent on compressing the bundle , which increases the resistance of the bundle to tearing. But when cleaning in a compressed state, the bond in the fibers decreases under the influence of a second force ( ).

The speed of the cleaning device can be increased up to a certain limit depending on the thickness of the tuft, if it is increased more, the possibility of damage to the fibers increases.

In this method, piles and knives are used as cleaning bodies, and their blows are directed to fibrous products moving in the air stream. The blades move ahead of the fibers and impact them.

Let's consider the force acting on the bundle of fibers when the bundle is struck in a free state (Fig. 1).

The speed of the cleaning device can be increased up to a certain limit depending on the thickness of the tuft, if it is increased more, the possibility of damage to the fibers increases.

and we imagine that the piece of fiber with mass is connected to each other and the masses are located at points A and B. A force acts on the mass at point A. This force is directed along the impact trajectory. We divide this force into two components.

                                                                              (1.3)

is directed along the line of the forming force and tries to separate the two masses, to break the connection.

This force affects the trajectory of the blade stroke in the direction of the attempt.

Figure 2. Punching the fiber in a free state

 The constitutive force V A is directed perpendicular to the connection, and it tries to rotate the mass around its mass.

It can be seen that the cleaning and fiber shock effects are more intense in free cleaning than in compression cleaning.

The cleaning efficiency for one machine in the cleaning unit is determined by the following formula:

                                                                           (1.4)

where - solid impurities and wastes contained in the separated waste when processing 1 ton of the mixture, kg; - Solid impurities and waste in 1 ton of mixture, kg.

The cleaning efficiency of several machines in the unit is determined by the following formula:

                                                  ( 1.5)

where - the amount of solid dirt and garbage in the waste coming out of each machine, kg.

Although the above-mentioned scientific and practical research has had a positive effect on the development of fiber cleaning equipment and technology, the cleaning rate of cleaning machines equipped with saw-tooth coatings does not allow to exceed the limit of 50–55%.

The fibrous mass coming out of the cleaning aggregates that process fiber products consists of small pieces of cotton that are not separated into individual fibers, and it contains waste and defects. To clean them, cotton pieces can be separated into individual fibers and then cleaned of defects.

Discussion:

1. Implications for IP Spinning Industry: Discuss the implications of the study findings for the IP spinning industry, including potential cost savings, productivity improvements, and quality enhancements resulting from improved cleaning efficiency.

2. Challenges and Limitations: Address the challenges and limitations encountered during the study, such as variability in raw material quality, equipment constraints, and practical constraints in implementing certain cleaning improvement strategies.

3. Future Research Directions: Suggest avenues for future research to further enhance cleaning efficiency in fiber cleaning machines, such as investigating advanced cleaning technologies (e.g., ultrasonic cleaning, plasma cleaning) and exploring synergistic effects of combining multiple cleaning methods.

4. Practical Implications: Provide practical recommendations for IP spinning factories to implement the findings of the study and optimize their fiber cleaning processes. This may include best practices for equipment maintenance, staff training, and process optimization.

5. Conclusion: Summarize the key findings of the study and their implications for improving cleaning efficiency in fiber cleaning machines in IP spinning factories. Highlight the importance of continuous improvement and innovation in enhancing productivity and competitiveness in the textile industry.

In conclusion. The analysis of the research carried out by the scientists and researchers of our country and abroad on the extraction of fibers suitable for spinning from the waste of cotton fiber and for the purpose of extracting the fibers from the waste, an opportunity was created to identify a number of shortcomings in some equipment and determine the directions of research on their elimination. In the process of grinding fiber products, the volume of the product expands and the friction force between them decreases. In order to effectively carry out the cleaning process, it is necessary to divide the fibrous layer into pieces. During grinding, fibrous materials are partially cleaned of foreign impurities. At the same time, grinding and cleaning processes are carried out by lightly hitting the product.

References:

1. The decision of the Cabinet of Ministers to ensure the implementation of the Decree No. PF-14 dated November 16, 2021 of the President of the Republic of Uzbekistan "On measures to regulate the activities of cotton-textile clusters".
2. Q. J. Jumaniyozov, Q. G '. Gofurov, S. L. Matismailov and others. Technology and equipment of textile products. Textbook. - T.: G'. Ghulam, 2012
3. Matismailov S.L. "Preparation of raw material for spinning". Textbook., T., "Sparks of literature" publishing house TTesI . 2018 - 183 p.
4. Pirmatov A. and others. "Spinning technology". Textbook., T., "Sparks of literature" publishing house TTesI . 2021
5. Jumanyazov Q. ​and others. " Firearm products technology and equipment ". Textbook. G'. Ghulam. 2012
6. Site materials of "Truetzschler", "Rieter" and "Marzoli" firms
7. Matismailov S.L. "Preparation of raw material for spinning". Textbook., T., "Sparks of literature" publishing house TTesI . 2023