Paper machine- China Suppliers Manufacturers Factory

Reducing the production and maintenance costs of paper machine equipment can improve the production efficiency of the manufacturer, enhance the profit, and better survive in the increasingly fierce market. The operation of the paper machine is not complicated, so we operate according to the standard, which can reduce the maintenance cost of the paper machine.

The felt of paper machine equipment should pay attention to the replacement cycle. In order to improve the efficiency of the equipment, these tasks must be done to the greatest extent. The felt is the place that is relatively easy to wear and fail. If the service life expires, it must be replaced in time, otherwise it will not be normal. use. If it is found to be worn, replace and repair the parts in time, and it is necessary to maintain the paper machine equipment in time during the production process. For the operators, the paper machine equipment must be installed and debugged by professional technicians before it can be used. The continuity of the materials must be ensured, and the materials must not be fed intermittently, and the production operations must be carried out in accordance with the instructions of the paper machine manufacturer.

Reducing the maintenance cost of paper machine equipment is what our manufacturers must strive to achieve. Now that the paper machine market is so fiercely competitive, how to reduce costs and increase profits is a problem that everyone is very concerned about.

The spiral surface coating is repaired using the multi-layer wood plasma surfacing technology, which uses a plasma power source to form a high-temperature arc column on the damaged surface, melting the composite coating of tungsten carbide alloy powder, thereby repairing and restoring scars on the mechanical surface.

Plasma surfacing technology has the following advantages for workpieces.

①Restore the original size of the workpiece, restore the workpiece, refurbish and reuse.

②The special powder used for welding technology can make the repaired part more wear-resistant and corrosion-resistant.

The paper machine should run within the speed range of the highest output:

Assuming that a well-designed paper machine has a good market for the product, the main factors affecting productivity and profitability are: papermaking rate, paper machine speed, and yield. In fact, these three terms represent the characteristics of a paper machine's operation.

The speed effect of the paper machine is very obvious. If all other factors remain unchanged, the speed of the paper machine is proportional to the output, and the operating efficiency is affected by many factors and is often seen as a reflection of the operating conditions and maintenance methods. Sometimes the operation efficiency of the paper machine is very high, but if you are unwilling to increase the speed, the overall productivity is still not high. Generally speaking, although production failures, repairs and clothing wear increase with vehicle speed, the impact of these factors on productivity and profit margins is secondary compared to vehicle speed, so the paper machine should be within the speed range of the highest output. run.

Time loss or output loss of paper machine:

There are many factors for the time loss of paper machine production or operation, which directly affect the paper machine output loss. These factors are as follows:

① Production interruption: paper break, roll paper and calender problems, start up, change the product;

②Overhaul shutdown: mechanical overhaul, electrical overhaul, and instrument overhaul;

③Mending or replacement of nets and blankets: forming nets, press felts, dry blankets, paper lead ropes;

④Influence from service department: suspension or shortage of electricity, steam, air, pulp, etc.;

⑤ Loss outside the machine: the paper roll is cut off the edge, and the rewinder is damaged.

Generally speaking, the time loss of production interruption is regarded as the loss of operating time, and the time loss caused by the maintenance shutdown is the loss of repair time. The time loss of the carpet is caused by the repair or replacement of the net, and the time loss caused by the influence of the service department is the time loss. It is not the problem of the paper machine itself.

For a paper machine, time loss must be minimized to reduce output loss and obtain good economic benefits.

The price of paper machines on the market varies greatly. So what factors have caused the price gap of paper machines? Here, EASTTAI Paper Machinery CO.,LTD. will give you an analysis.

The price of raw materials for production equipment has changed a lot in recent years. The production of paper machines is mainly made of steel. The price of steel has changed greatly due to the form. If the price of steel is in the rising stage, the manufacturing cost of paper machine equipment will increase, which will lead to paper machines. The price rises. If the steel market is in a low period, the cost of raw materials will be reduced, and the price of paper machine equipment will also be relatively reduced. The production capacity and production efficiency of paper machines are different, that is to say, the technical level is different, and the natural investment cost will be higher if the technology is good. Because research and development requires capital investment, but the research and development of technology is to improve the performance of the machine, to ensure that the equipment can operate safely and efficiently at work, and to improve the economic benefits of the enterprise. The investment in technology cost will not greatly affect the price of equipment. This depends on the choice and positioning of the manufacturer. EASTTAI Paper Machinery CO., LTD. has been pursuing high-quality and high-tech equipment, and the production of paper machine equipment has advanced technology. Reach the advanced level.

The price of paper machines is currently relatively transparent. Customers don’t have to worry about being pitted. They just buy according to their own needs when choosing. In the past two years, with the increasing demand for paper products, the paper industry has developed rapidly, and the paper machine market will develop in the future. Getting better and better.

In the 21st century, with the continuous improvement of scientific and technological level, the performance of domestic papermaking equipment has been significantly improved in all aspects. In recent years, with the continuous expansion of foreign market demand, the sales of papermaking machinery and equipment have also reached a historical peak, and it has also promoted the sales of the entire papermaking equipment. Since the 21st century, with the continuous improvement of science and technology, the performance of domestic papermaking equipment has been outstanding in all aspects. Push the papermaking machinery and equipment to a historical peak.

Modern papermaking technology can be divided into pulping, modulation, copying, processing and other main processes. The process is cumbersome. The equipment used in the whole process includes: material preparation equipment, pulping equipment, and papermaking machinery. Especially papermaking machinery, it involves many types, such as refiners, pressure screens, filters, forming machines, dryers, separation equipment and so on. The smooth progress of the paper machine equipment in the processing process is inseparable from the assistance of the bearings, and the paper machine will fail during the normal operation, which is likely to be caused by the bearing failure. Therefore, the bearing is an indispensable component. For the normal operation of the work, the following describes the requirements of papermaking machinery and equipment for bearings.

1. Reliable online use: Paper-making machinery and equipment should ensure continuous and uninterrupted operation, and normal maintenance must be carried out before shutdown. Therefore, when selecting bearings, extremely high reliability of online use is the most important reference index.

2. Easy installation and disassembly: In the normal maintenance and maintenance process, the bearing can be quickly disassembled and installed, thereby shortening the downtime and creating greater value.

3. Automatic compensation abnormality: factors such as the length of the roller, the temperature and the bearing support position may cause the shaft to elongate in the axial direction, thereby causing the bearing to be off-center or axially offset. The bearing must be able to adapt to changes in operating conditions.

4. Corrosion resistance and high temperature resistance: The high humidity environment in the wet part of papermaking machinery and equipment causes serious damage to lubrication, which ultimately affects the service life of the bearing. The high working temperature of the dryer and the working temperature of the bearing also affect the lubricating performance of the bearing. Therefore, the requirements for bearings are getting higher and higher.

5. Adaptation accuracy and speed: When configuring and selecting bearings, the adaptability of the bearing itself under high-speed conditions must be considered, and radial clearance C3/C4 is generally recommended.

Generally speaking, from the point of view of use, the clearance between the bearings should be appropriate. If it is too large, it will cause impact, and if it is too small, it will cause poor lubrication and may burn tiles. Then, the surface quality and geometry of the bearings and journals should be strictly guaranteed. ; Bearings of papermaking machinery and equipment should improve the quality of lubrication, control the pressure, temperature and flow of oil, and strengthen oil filtration; secondly, use fuel and lubricating oils that meet the requirements. In order to make the bearings of papermaking machinery and equipment give full play to and maintain their proper performance for a long time, regular maintenance or regular inspection should be done effectively. Regular inspection, early detection of faults and prevention of accidents are very important to improve the production efficiency and economy of papermaking machinery and equipment.

A complete set of equipment linked to the division of the pulp into the paper web, including the headbox, the wire section, the press section, the drying section, the calender, the paper reel, and the transmission section and other mainframes such as steam, water, vacuum, lubrication, Auxiliary systems such as heat recovery. The wire part that forms the wet paper web is the core of the paper machine, so the paper machine can be divided into fourdrinier paper machine, clamp paper machine and cylinder paper machine according to the structure of the wire part.

After the paper sheet from the drying section is calendered by the calender, the smoothness, gloss and tightness of the paper sheet can be improved, the thickness of the whole paper sheet can be consistent, and the air permeability can be reduced; Rolling into a paper roll completes the main process of papermaking. In order to meet different needs in the future, there are also calenders, rewinders, paper cutters, etc. after the paper roll in the papermaking equipment workshop.

What should I pay attention to when purchasing a paper cutter?

Cutting is also an important aspect of digital printing finishing, first of all, the cutting of paper. Like traditional printing, digital printing also uses a paper cutter to cut the paper or finished product into the desired size and shape. At present, there are various paper cutters on the market, both manual and computer-controlled fully automatic. Generally speaking, it is more appropriate to use a paper cutter with a cutting width of 78cm for digital printing. If possible, choose a computer-controlled paper cutter to better match digital printing, because it can store a certain amount of data. When cutting a job that has been processed, it is only necessary to call up the original program from the computer, which can fully save the time of adjusting the machine. In the use of the paper cutter, in order to keep the blade sharp and prolong the service life of the paper cutter, the thickness of the paper cut at one time should not exceed 40mm, and the pressure of the paper cutter on the paper should also be appropriate, generally softer paper needs The pressure is higher, and the pressure required for harder materials is relatively lower. Double rail digital display cutter  When using a computerized paper cutter, it is very important to keep the blade sharp. Pay attention to the correct maintenance and use of the blade. Once the blade is dull, the blade should be re-sharpened, otherwise it will affect the cutting accuracy. In addition, pay attention to keeping the ambient temperature at 19-23°C and the relative humidity at 50%. Under such conditions, the characteristics of the paper are relatively stable, which is conducive to the correct use and maintenance of the paper cutter, because the determination of many cutting parameters depends on the processed paper.

Maintenance of equipment failure of paper burning paper machine. Paper machine is a general term for a complete set of equipment linked to the division of pulp into paper web, including headbox, wire section, press section, drying section, calender, reel and transmission Department and other main engines and auxiliary systems such as steam, water, vacuum, lubrication, and heat recovery.

1. There are many equipment failure points, and equipment failure often occurs;

2. some parts have a short service life, and the frequency of replacement of spare parts is high;

3. There is a large gap between the failure cycle and the occupied maintenance time, which is difficult to manage. There are many reasons for the equipment failure of the paper machine

What are the parts of the wire department of the Fourdrinier paper machine?

Answer: The wire department of the Fourdrinier paper machine is mainly composed of the headbox and the wire case. The mesh part consists of breast roll, case roll, water baffle, chopping board, vacuum suction box, couch roll, forming plate, facing roll, net drive roll, net guide roll, scraper, tensioning device, net shaking device, Copper mesh correction device, etc.

What is the role of the wire department of a Fourdrinier paper machine?

Answer: The wire part is the main part of the paper machine. The main function of this part is to remove most of the water in the netting paper to form a wet paper sheet. The dehydration method is filtration and suction dehydration. Generally, the amount of water removed from the wire section accounts for more than 95% of the dehydration of the netting paper.

Usually these two functions are interrelated, forming a wet paper sheet during the dehydration process, and further dewatering in the composition of the wet paper sheet, and finally reaching a uniform wet paper sheet with a certain wet strength. In essence, the formation of wet paper sheets is the result of the gradual deposition of fibers on the web, and the interweaving of fibers into a thin layer. Only when the fibers are evenly arranged in a crisscross pattern on the web surface, can a high-quality paper with uniform uniformity, thickness and strength be formed throughout the entire width of the sheet. In short, the function of the wire section of the Fourdrinier paper machine is the process of changing a liquid suspension into a solid wet paper sheet.

The unmaintained and maintained service life and working conditions of papermaking Pulp equipment are completely different. Some papermaking equipment will have minor problems after being used for a period of time. This kind of workload problem on the one hand, on the other hand, is the paper machine equipment. For daily maintenance, the daily maintenance of paper machine equipment is very important.

The maintenance of Pulp equipment of paper machine should start from all aspects. For example, take the screws on the paper machine to see that after the paper machine has been operated for a long time, the screws will become loose.

The main production task of paper machine is to produce paper. The raw materials of paper machine, like other machinery and equipment, are recycling, processing and reusing waste raw materials to form a secondary processing and recycling industry, which is a sustainable development industry. As far as possible, no contaminated additives and raw materials should be used. Equipment with pollution sources should be eradicated to ensure clean production and 1 waste paper should be used for production. Using scraps, waste books, newspapers, waste cartons, wheat straw, straw, bamboo pulp and reed as raw materials, high, medium and low-grade toilet paper, burnt paper, glossy paper, writing paper, newsprint, kraft paper, corrugated paper, box board paper and other products can be produced. In the production process of the whole equipment of paper machine, the water is recycled, and no waste water is produced. The chemical water discharged can be reused and does not need to be discharged. It can produce all kinds of paper products needed by the market without changing the equipment. One machine is multi-purpose, the process design is reasonable and practical, the layout design is compact, and the one-stop production line is convenient for production operation and management, with stable mechanical performance, high coefficient, localization, high-speed and low maintenance cost of equipment, which is suitable for large, medium and small-sized papermaking and enterprise production

The paper machine production line is mainly the mechanical equipment production line for producing paper products. According to different specifications and types, different kinds of paper products are produced, such as burning paper, yellow watch paper, gun paper, packaging paper, etc.

In today's environment protection issues are popular today, the paper machine production line must also vigorously pursue environmental protection issues in order to make the paper machine industry better development. Due to the backward production technology, the paper machine production line pollution problem is serious, belongs to the high pollution industry, can not get policy support, so the paper machine industry development is slow.

But now, with the rapid improvement of the technical strength of paper machines, the production technology of paper machines is developing faster and faster, and the pollution problems before have been gradually solved. With the emergence of new environmental protection paper machine equipment production line, the paper machine equipment production line has gradually entered the line of people's view. In today's society, only the development of new environmental protection paper machines, the most environmentally friendly papermaking machine Production line, is a good paper machine production line, in order to make the paper machine industry better development. Therefore, only the new environmental protection paper machine production line is a good paper machine production line.

The main development direction of modern pulp equipment is continuity, large-scale, high concentration, multi-function, high efficiency and centralized automatic control.

1. The pulp equipment is developing in the direction of medium and high concentration. Although there are medium and high-consistency pulping equipment, the more common ones are still low-concentration pulp equipment. With the upstream process supporting of the beating process (such as the promotion of medium and high concentration bleaching technology) and the increase in the scale of enterprises, considering factors such as economy and quality, the use of medium and high concentration beating equipment is bound to further develop.

2. Diversified forms of pulp equipment. Now there are beating equipment for processing waste paper pulp that also has the function of impurity removal. With the needs of production and the research and development of equipment, different fiber types are dealt with. In terms of function, it will be specially designed with stronger dedicated performance.

3. Large-scale pulp equipment. Due to the rapid development of production scale, the production capacity of stand-alone equipment is bound to increase. Although it brings difficulties to design and manufacture and increases the power load of a single machine, it is beneficial to simplifying production management and improving economic benefits.

4. Further serialization and specialization of pulp equipment grinding tooth pattern. With the development of modern papermaking technology and the research on the microcosmic mechanism of beating will be further in-depth. For different raw materials, different varieties, and different requirements, special grinding discs will be specially matched to serialize and specialize the tooth pattern (teeth).