Research Status and Development Directions of the _Coal Ash Yarn_ Treatment Method
Classification： Knowledge Center
Release time：2020-05-26 17:29
Research Status and Development Directions of the “Coal Ash Yarn” Treatment Method
Huang Xiang
(Xi'an Institute of Engineering and Technology)
Abstract: This paper systematically introduces the research history and achievements made over the past 50+ years in China’s textile industry regarding the treatment of “coal ash yarn,” and proposes...
In the future, comprehensive management of “coal ash yarn” should focus on research efforts aimed at improving textile production processes, enhancing the air-purifying capabilities of air conditioners, and strengthening management practices.
Keywords: textiles; fly ash yarn; filtration; washing; electrostatics; fine yarn; air purification
Chinese Library Classification Number: TS108.6 + 11 Document Identification Code: A Article Number: 1001-27415 (2002) 0920029-204
The “coal ash yarn” phenomenon has long been a persistent challenge affecting the quality of textile products.
A major production challenge—despite the domestic textile industry’s efforts on this front for many years.
A great deal of research has been conducted, and some governance measures have been adopted, but to date, nothing has been achieved.
be thoroughly resolved. This article systematically introduces China’s efforts over the past 50-plus years...
The research history and achievements of the textile industry in addressing “coal ash yarn” pollution.
The research findings obtained.
1. The Research History and Current Status of “Coal Ash Yarn”
China’s textile industry is conducting extensive research on the management of “coal ash yarn.”
The process can be divided into the following six stages.
(1) In the 1950s, the Shanghai No. 7 Cotton Textile Mill once used
Electrostatic treatment. The No. 30 Cotton Textile Mill in Shanghai once used the oil-mist filtration method.
Remove coal ash. The Shanghai Silk Spinning Mill once used brushes to clean the spindle areas.
(2) In the 1960s, Shanghai Anda No. 1 Factory (Shanghai No.
28 Cotton Textile Mills) once used synthetic detergents in the air-conditioning spray process.
Wash coal ash air in the middle. Shanghai Jiaping Yarn Mill (Shanghai No. 33 Cotton Spinning Mill)
The textile mill) used loofah fibers to filter coal ash. In 1966, the Wafangdian Cotton Textile Mill...
The textile mill once employed a multi-stage filtration method. The Wuxi Qingfeng Yarn Mill used materials containing “coal.”
The “gray yarn” fabric is selected for dyeing. Some factories have discovered “coal-gray yarn.”
After the issue arose, all the air was recirculated, but that still didn't solve the problem.
(3) In the 1970s, Beijing No.1 Cotton Textile Mill conducted a trial run.
Electrostatic dust removal. The Shanghai No. 6 Cotton Textile Mill’s prevention and control measures for “coal ash yarn.”
A 15-year-long investigation and study was conducted, and based on this, ...
In 1973, a three-stage filtration system was installed, with the primary filter made of nylon cloth.
Filter; the medium filter uses an M2 Ⅱ-type foam plastic filter; the fine filter uses...
Use a J X220 ultrafine asbestos fiber paper filter.
(4) In the 1980s, Shanghai’s No. 12 Cotton Textile Mill once...
About the Author: Huang Xiang, male, born in 1962, Professor, Xi'an, 710048
Date of receipt: 2002-05-15
Replacing the tertiary fine filtration with a secondary medium filtration has yielded excellent results.
Fruit. The medium-efficiency filter bags used for filtration are made of foam plastic.
Material, with an efficiency of up to 80%. The China Textile Conference held in Xiangtan, Hunan.
The Engineering Society’s 1983 Academic Symposium on Dust Removal and Noise Reduction in Textile Mills
At the conference, Tianjin University shared its insights on “Preventing ‘Black’ in Spinning Workshops.”
An academic paper titled “Research and Practice on the ‘Gray Gauze’ Issue,” focusing on “Black and Gray”
The yarn was observed under a microscope, and the observation results were statistically analyzed.
Analysis. For the first time, a systematic theoretical analysis has been conducted on the causes of “black-gray yarn.”
Analysis, based on this, and the Tianjin No.1 Cotton Textile Mill and Tianjin Felt
Factory coordination—fine spinning machines at Tianjin No. 1 Cotton Textile Mill, equipped with 50,000 spindles.
The technical renovation work was carried out to add a new air purification and filtration chamber.
The fresh-air purification and filtration chamber is equipped with a two-stage filtration system.
The first stage uses large-area plate-and-frame filters, with TL2C201-type coarse-effect filter media.
Filter media; the second stage uses a bag filter, with specially developed filter media.
TL2Z217 filter material is made from polyester filaments using a layered needle-punching and spraying process.
Made by a胶-based method, it features a gradient in fiber diameter and density, resulting in higher filtration efficiency compared to conventional filters.
At the time, domestic medium-efficiency filters were expensive, even more so than those at Beijing’s Second Cotton Textile Mill.
The introduction of medium-efficiency filters from Switzerland’s LUWA company, in 1981.
In December, hosted by the Tianjin Textile Bureau, with over 20 specialized organizations from across China participating.
At the appraisal meeting attended by [name/position], this research on preventing “black and gray yarn” was discussed.
The achievements and engineering practices have received full recognition. Tianjin No.1 Cotton Textile Company
The textile mill also shared its experience at this dust removal academic conference on “adopting medium-efficiency filters.”
The article titled “Production Experiment Report on Filtration Equipment to Prevent ‘Black and Gray Yarn’” provides a detailed...
The development of filter media for secondary medium-efficiency filtration equipment and its application in production are introduced.
The usage situation. Qingdao No.1 Cotton Textile Mill shared information on “air pollution”
“Investigation and Analysis of Factors Affecting Gauze Quality,” among other articles. In 1989
At the East China Regional Academic Symposium on Textile Air Conditioning and Dust Removal, Qingdao No. 9 Cotton...
The textile factory shared an article titled “New Exploration for Solving the ‘Coal Ash Yarn’ Issue,” and raised...
Use the oil-adhesion method, which involves using oil to adhere and remove harmful substances.
Come on, to achieve the goal of air purification, the core component of this device is...
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Cotton Textile Technology ·541·
© 1995-2006 Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved.
Use small galvanized steel plates coated with oil as filler material. Nantong No. 4 Cotton Textile Mill
The textile mill exchanged views on the causes of dust accumulation on synthetic fiber yarns and preliminary solutions.
The article “Exploring” systematically analyzes the comprehensive factors underlying the formation of “coal ash yarn.”
Simple, and proposes that an integrated approach should be adopted.
(5) In the 1990s, Handan Second Cotton Textile Co., Ltd.
The company has taken the following measures to address “coal ash yarn”: ① In the empty...
Install filter sponges on the outdoor air vents; ② During periods of air pollution,
② Temporarily close the outside air intake and use the workshop’s return air; ③ Install a high-pressure blowpipe, leveraging...
Clean the coal ash yarn by blowing it with high-pressure air; ④ Operate during the spinning process.
1. Increase the height of the yarn base to reduce the degree of contamination at the bottom of the yarn; ⑤ Shrink
Short-spindle spinning time. The Linyi Cotton Textile Mill in Shandong conducted a “coal”...
The control and prevention trials for “gray gauze” employed thin-layer sponge filtration of fresh air, respectively.
W-shaped air duct for filtering fresh air and three methods using laundry detergent cleaning.
Case. The results indicate that washing powder should be added to the air-conditioned room’s pool for cleaning.
The best results were achieved, essentially meeting the goal of controlling and preventing “coal ash gauze.”
Yes. The Sulun Textile Factory in Jiangsu Province strictly adheres to three rigorous quality controls in practice.
The first barrier is air filtration; the second barrier is washing with detergent spray.
Polyester; the third and subsequent stages are carefully monitored. Through the first two measures, the large...
The severe “coal-dust gauze” situation has been largely brought under control. However, due to the workshop...
The equipment inside is also emitting oil-smeared particles, plus some unprocessed...
Air being processed leaks into the workshop, and “coal ash yarn” still appears from time to time, because...
Therefore, it’s crucial to maintain strict quality control in the subsequent stages. Based on the actual conditions of the spinning machines, they...
A handcart was made, equipped with two brushes on top. By pushing the cart, one can utilize...
The brush removes the small amount of oil and dust adhering to the surface of the yarn. This method...
The actual usage results are good. In addition, they frequently collaborate with the meteorological authorities.
Hanggou actively carries out forecasting and dust-prevention work for “coal ash yarn.” Northwest.
The No. 1 Cotton Textile Mill uses a three-stage filtration method to treat “coal ash yarn.” The first...
The first stage uses a 20-mesh/25.4 mm stainless steel wire mesh; the second stage uses...
Use a spinning L TG internal suction dust cage filter, with an automatic plate in the third stage.
Bag filter. In 1989, the Northwest Textile Institute designed this for the plant’s No. 3 unit.
Tests conducted with Air Conditioner No. 5 show that the final stage of the three-stage filtration can...
Filter out dust particles with a size of 3 μm and larger, with a filtration efficiency greater than...
98%. The Linfen Textile Mill is studying the meteorological conditions that lead to the formation of “coal ash yarn” and...
The prevention and control methods were studied in depth, and applied to textile engineering in Shanghai.
Presented at the 1995 Academic Symposium on Air Conditioning, Refrigeration, and Dust Removal.
The Meteorological Conditions for the Formation of “Coal Ash Yarn” in Textile Factories and Its Prevention and Control Measures
the article “Law.” The Northwest Textile Institute (now renamed Xi'an Engineering University)
The Technical College conducted experimental research on air purification using the soap-washing method, in which...
The “Journal of the Northwest Institute of Textile Engineering” published an article titled “Using the Soap-Washing Method for Purification.”
The paper “Research on Air Pollution—A Preliminary Exploration of the Prevention and Control of ‘Coal Ash Yarn’” refers to...
Using the soap-washing method has a relatively obvious effect on removing fine dust particles from the air.
the effect, simply by selecting the appropriate detergent, within a concentration of 0.5‰ to 1‰.
At the appropriate concentration, it can effectively control and prevent “coal ash gauze.”
(6) Entering the 21st century, the Northwest Textile Institute turned its attention to “coal ash.”
A systematic and in-depth study was conducted on the governance methods of “sha,” and they were proposed separately.
Apply antistatic agents and utilize electrostatic-fiber layer filtration methods to treat...
A new approach to “coal ash yarn.” And analyze it using methods from air pollution studies.
The causes of “coal ash yarn” were analyzed, laying the groundwork for further control and research on “coal ash.”
The emergence of “silk” provided a theoretical foundation. Hebei Shijiazhuang Cotton No. 7 Spinning Mill.
The Textile Co., Ltd. conducted a study on the causes of “coal ash yarn” produced by rotor spinning.
A comprehensive analysis indicates that “coal ash yarn” is primarily composed of two main components.
This is caused by: first, the accumulation of dust in the channels; and second, short fibers.
It is formed by the long-term accumulation of fibers in a specific area, resulting in a yarn strand. To completely resolve it...
To eliminate “coal ash yarn,” we need to address the raw materials, the environment (referring to air purification), and operational practices.
and take measures in aspects such as equipment. Shandong Linyi Xinguang Textile Co., Ltd.
The company employs a two-stage filtration method to treat “coal ash yarn,” with the intermediate stage of filtration...
The filter uses F8 specifications. This device features a large filtration area and low pressure drop, and...
Its filtration efficiency between medium and high efficiency internationally reaches the colorimetric method standard.
Around 95%, the primary filter selected is of G4 specification, which corresponds to the international coarse-efficiency standard.
Between medium and high efficiency, the colorimetric method achieves 40%.
2. Research and Development Directions for “Coal Ash Yarn”
The management of “coal ash yarn” is a systematic undertaking that requires comprehensive measures.
Comprehensive governance requires not only paying attention to the management of the micro-environment but also avoiding neglecting the overall situation.
The governance of the larger environment will increase the effort required to address pollution in smaller environments.
Reduce costs. To effectively prevent and suppress the formation of “coal ash yarn,” it is necessary to...
Simply relying on equipment upgrades and measures is not enough for small-scale environmental governance—it must be supplemented.
Strong internal management system. We believe that in the future, comprehensive governance of “coal ash”...
The research and development direction of "silk" should be initiated from the following aspects.
211 Improving Textile Production Processes
To reduce the generation of “coal ash yarn,” in textile processing, in addition to...
Adopting a high-pressure blowing method to clean the tube yarn and improve the yarn base height.
In addition to measures such as adjusting the degree and shortening the spinning time for fine yarn, we believe that making changes...
Further research is still needed in the area of textile manufacturing processes.
21111 Strengthen in-depth research on antistatic agents.
One of the conditions for the formation of “coal ash yarn” is that the yarn becomes statically charged.
Electrically adsorbing smoke and dust, therefore, the yarn is treated with an antistatic agent.
By eliminating static electricity from the yarn, you will inevitably reduce or even eliminate “coal dust.”
The emergence of “yarn.” Although synthetic fibers are generally treated during the production process,
It is treated with an antistatic agent, but by the time it reaches the spinning process, the antistatic agent...
Performance has significantly deteriorated and is almost ineffective; therefore, research is needed.
Investigate how to treat roving with an antistatic agent before the spinning process.
Reasoning; what exactly is the appropriate level of antistatic agent content, tailored to different fibers?
Based on the structural characteristics, should you choose a cationic or anionic antistatic agent?
Agent; at what relative humidity of the air does the antistatic agent perform best?
and other issues, making this a treatment that requires little investment and employs an extremely simple approach.
The “coal ash yarn” method can be quickly promoted and adopted in textile mills.
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Cotton Textile Technology Volume 30, Issue 9
·542· September 2002
© 1995-2006 Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved.
21112 Strengthen research on textile airflow
During the spinning process of a ring spinning machine, the steel ring rotates at high speed, shaping the yarn.
Form a vortex ring; due to the rotational friction caused by the high-speed airflow within the vortex ring, it generates...
Electrostatic charge causes high-speed air to enter the yarn loop axially from bottom to top along the yarn axis.
Air is continuously supplied to the lower part of the yarn tube, and particulate matter from the dust and smoke carried by the ventilation system is introduced.
The thread first comes into contact with the lower bobbin and is electrostatically adsorbed onto the surface of the bobbin.
Causes dust and smoke to adhere to the rapidly rotating yarn. Therefore, it is necessary to reduce static electricity.
To generate electricity, one must find ways to break through the boundary layer of air surrounding the gas sphere.
Such as utilizing external airflow or leveraging the air distribution patterns of supply and return air from air conditioning systems.
Interfere with and disrupt the atmospheric boundary layer. Alter the air boundary layer around the yarn bobbin.
Flow patterns, starting with the study of textile airflow, aim to reduce static...
The method of electricity generation disrupts the conditions for the formation of “coal ash yarn.”
212 Enhancing the air purification capability of air conditioners
Currently, to address the issue of “coal ash gauze,” the approach adopted in air conditioners is...
The main methods include: two- (or three-) stage filtration, soap washing, and electrostatic dust removal.
law. These methods have played a certain role, but many shortcomings still remain.
Feet. Therefore, we believe that in air-conditioned rooms, the purification treatment of tiny smoke and dust is essential.
Further research is still needed in this area.
21211 Strengthen research on electrostatic fiber filtration.
Traditional two- (or three-) stage filtration systems involve substantial capital investment.
The resistance is also significant, and the ultra-fine fiber filter paper has a high filtration air volume per unit area.
Small in quantity, requires large amounts, and is typically for single-use only—replace it.
The cost of a single instance is high. Although electrostatic precipitators can serve as tertiary filters,
The third-level treatment of the wastewater, but due to the presence of a relatively large number of long fibers near the textile factory.
Wei Feiyang can easily cause a short circuit due to contact between the plates, and the plates...
It’s difficult to clean up after dust collection. Additionally, when handling larger air volumes, it occupies a significant floor space.
The accumulation is significant, and the equipment investment costs are also excessively high. Therefore, we believe that we should...
Organically combine the filtration method and the electrostatic method, adopting an electrostatic—
Fiber filtration is used to treat “coal ash yarn.” Electrostatic-fiber filtration features...
The following features: (1) High particle filtration efficiency, especially suitable for
Collection of fine particulate matter; (2) The filter has low pressure loss and initial...
(1) Low investment and operating costs; (2) Increased dust-cleaning efficiency; (3) Can significantly...
Reducing the footprint allows simultaneous capture of both charged and uncharged dust particles.
Grain.
21212 Strengthen research on the combined electrostatic and mist dust removal technology.
The traditional soap-washing method increases the workload of cleaning and is subject to equipment limitations.
Limited availability and high detergent consumption, resulting in excessive foam.
The air being washed is also somewhat polluted, so it should...
It has its limitations when used in practice. We believe that the spray washing method and the static...
The electrical method is organically combined with a water mist electrostatic composite dust removal technology.
Technically govern “coal ash yarn.” Currently, there is a combined electrostatic and mist-based dust removal device.
Powder already used at the coal transfer points on conveyor belts in the coal-handling workshops of thermal power plants.
Dust control. This technology combines high-voltage electrostatic dust suppression technology with static...
The electrostatic charging and water mist dust suppression technology is scientifically and reasonably integrated.
Secondary composite dust removal, seamlessly integrated and combined. It features purification and reduction.
Good dust removal performance, low operating costs, low energy consumption, zero emissions, and no secondary pollution.
Dyeing and eliminating the need for additional floor space—these advantages help address the issue of “coal ash yarn.”
It has certain reference value.
21213 Strengthen research on new composite filter materials.
In the past, when using filtration to treat “coal ash yarn,” the filter media...
The choice simply involves overemphasizing filtration efficiency, dust-holding capacity, and filtration.
While focusing on filtration performance such as dust resistance, the requirements for dust cleaning have been overlooked. In recent years...
Come on—both domestically and internationally, many composite filter materials that facilitate dust removal have been developed, such as in...
Made by coating the surface of needle-punched felt filter media or woven filter media with a microporous membrane.
Composite filter media, capable of achieving surface filtration, can not only significantly enhance the performance of the filter media.
the capture rate (which is about one order of magnitude higher than that of the original filter material), and also enables the powder...
Dust only stays on the surface and is easily removed, thereby enhancing the filter material's ability to shed particles.
Sex. Although the inherent resistance of this filter material has slightly increased compared to before the membrane coating,
However, after the dust collector starts operating, the filter media resistance does not rise continuously but tends to stabilize.
It is stable and significantly lower than that of conventional non-coated filter media. Micro-porous film coating
The composite filter material is a new type of composite filter material developed domestically; it is...
The developed expanded polytetrafluoroethylene film will be processed using a special technique.
The process is adhered to the surface of the filter media, and its filtration primarily relies on the thin film.
Achieves a filtration efficiency nearly one order of magnitude higher than that of conventional filter media, and operates...
It has low flow resistance and excellent dust-cleaning performance. Currently, this type of surface-filtering...
The filter media have now been localized, and their price has dropped significantly compared to similar foreign products.
Low, it holds broad application prospects in the governance of “coal ash yarn.”
21214 Strengthen research on new types of air purification devices.
As the requirements for indoor air quality (IAQ) continue to rise,
Currently, many new multifunctional air purification devices have been developed abroad.
such as air purifiers and the Cosa Tron air purification system, etc. Air
Air purifiers typically consist of multi-stage air filters and high-voltage electrostatic dust removal.
It consists of a device and an activated carbon adsorber. Dust removal is achieved by filtering air through coarse...
Use a high-efficiency filter or a medium-efficiency filter as a pre-filter; remove
Harmful and toxic substances are removed using an activated carbon adsorber as a post-treatment step.
Processing (final) filter. The Cosa Tron air purification system is through...
The synthetic excitation electric field generated by the electrodes processes tiny dust particles into...
For large-particle-size particles that are easily captured by the filter, while also adhering...
Harmful substances and odors on dust particles are removed from the air, thereby...
Enhance the system's self-cleaning capability. This Cosa Tron device is not a collection...
Dust equipment doesn't actually adsorb dust itself; rather, it does so by doubling its effectiveness.
The filter in the air conditioning unit performs purification by filtering out impurities.
Therefore, the Cosa Tron air purification system should be used in conjunction with a medium-efficiency filter.
When used in combination, the treatment of “coal ash yarn” will achieve good results.
213 Strengthen ash management
In addition to the two major areas of research mentioned above, governing “coal ash yarn” also involves...
It is also important to pay attention to the daily and year-round management of ash control. First, one should...
Identify the patterns underlying the occurrence of “coal ash yarn” and carry out effective prevention and forecasting efforts; its
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Cotton Textile Technology ·543·
© 1995-2006 Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved.
Next, attention should be paid to the management of doors and windows, especially in areas prone to “coal-dust gauze.”
is even more important within the specified time frame. In short, we should establish both preventive and curative measures for grayness.
Management system that specifies in detail the requirements, measures, and work tasks for ash management, and...
Moreover, irregular inspections ensure that the dust control measures are earnestly implemented.
3. Concluding Remarks
The management of “coal ash yarn” is a complex and comprehensive system.
The overall project should, on the premise of cost savings, be tailored to the actual conditions of each plant.
Moreover, adopt a pragmatic approach—making do with what’s available, tailoring solutions to local conditions, and integrating multiple approaches into one.
decide. We believe that, with the continuous advancement of science and technology and the increasing focus on “coal”
The research on the “gray gauze” governance approach is steadily deepening—“coal ash gauze” this...
A production challenge will definitely be thoroughly resolved.
References:
[1] Zhang Guoping, Pu Zhiyong, Miao Dingshu. Production Practices for Eliminating “Coal Ash Yarn”
[J]. Cotton Textile Technology, 1996; 24(12): 39–42.
[2] Chen Liu, Dong Huimin, Huang Xiang. A Proposed Approach to Addressing the “Coal Ash Yarn” Phenomenon
[J]. Cotton Textile Technology, 2001; 29(2): 57–58.
[3] Li Zhaohua, Zhang Xiumin, Wang Xinshi. Analysis of the Causes of Black and Gray Yarn in Rotor Spinning
[J]. Cotton Textile Technology, 2001; 29(6): 43–45.
[4] Liu Yi, Dai Yuanxi. Meteorological Conditions for the Formation of Coal Ash Yarn in Textile Mills and
Prevention and Control Methods [J]. Ventilation and Dust Removal, 1995; (3): 38–39.
[5] Hu Yunhan. The Causes and Treatment of “Coal Ash Yarn” in Cotton Spinning Production [J].
Shaanxi Textile, 1995; (2):30–32.
[6] Chen Liu, Dong Huimin. A Preliminary Study on the Formation规律 of Coal Ash Yarn [J]. Shaanxi Textile,
2001; (4):23–24.
[7] Chen Liu, Dong Huimin, Yin Qinghai. Application of Antistatic Agents for Treating Coal Ash Yarn
Research [J]. Journal of Northwest Institute of Textile Engineering, 2000; 14 (Supplement): 17
~19.
[8] Huang Xiang. A Review and Outlook on Textile Air Conditioning and Dust Removal Technologies at Home and Abroad [J].
Cotton Textile Technology, 2001; 29(6): 5–10.
[9] Huang Xiang. Improved Design of the Filtration Section in Modular Air Conditioning Units [J]. Cleanliness
With Air-Conditioning Technology, 2000; (4):31–33.
[10] Huang Xiang. Indoor Air Quality and Design of Packaged Air Conditioning Units [J]. West
Journal of the Northern Institute of Textile Engineering, 2001; 15(3): 50–53.
Research Situation and Development Direction of
Coal-to-dust-stained yarn Control
Huang Xiang
(Xi’an University of Engineering Science and Technology)
Abstract: The research history and acquired effects of coal-to-dust-stained yarn control.
The domestic textile industry over the past 50 years is introduced systematically. Measurement for
Comprehensively controlling coal dust-stained yarn, such as improving textile processes and enhancing the...
The air conditioner's purifying capability and the strengthening of its management should be studied.
Key Words: Textile, Coal-dust-stained Yarn, Filtration, Scouring, Static Electricity, Spun
Yarn, Air Purification
Self-made BD200SN rotor spinning machine yarn-guiding rubber roller sleeve with steel wire retaining spring.
The Czech-made BD200SN rotor spinning machine has undergone long-term operation.
The steel wire tightening spring inside the yarn-guiding rubber roller sleeve is prone to damage, leading to issues with the rubber roller.
The sleeve cannot be used. If you purchase a new rubber roller sleeve, the process will take a long time and delay production.
production, and they are expensive. We sort the damaged rubber roller sleeves.
After analysis, it was determined that this wire fastening spring can be completely remade.经
After repeated trials, it was finally successfully developed and, following trial use, has achieved...
Original effect.
The specific manufacturing method is: Prepare a piece of galvanized steel that is 10 mm thick.
The plate—using medical tweezers, remove one that shows no wear from within the rubber roller sleeve.
As a sample, place the steel wire retaining spring onto the galvanized steel sheet. Root
According to the shape of the wire retaining spring, at each internal corner of the wire retaining spring...
Drill a hole with a diameter of 115 mm—total of 6 holes—and prepare another 6 units.
A steel needle with a diameter of 115 mm is inserted into a circular hole, using a needle with a diameter of 0.18.
The carbon steel wire, measuring in millimeters, is bent between steel needles and slightly manipulated with needle-nose pliers.
Micro-adjustment—i.e., shaping the wire fastener to exactly the same form as the original.
Spring. Then, using tweezers, hold it and place it into the rubber roller sleeve—discard one.
The rubber roller sleeve can continue to be used.
Our company’s use over the past two years has shown that this method is simple.
It’s simple and easy to use, has low maintenance costs, and helps businesses save money.
Anhui Huaibei No.1 Textile Co., Ltd. Wei Yuesheng
Specializes in the professional production of dust removal equipment, air washers, and ventilating devices for textile mills.
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