Although there are many drying equipment factories in China, the level of drying equipment still has a long way to go compared with advanced countries. This is the consensus view of the industry. How to improve the level of drying technology in China as soon as possible and to cope with competition from all aspects after entering the WTO is the most important issue for the drying industry. Combining the opinions of multiple experts, the following suggestions are made on the status quo of China's drying industry.
1. Strengthening basic research work For many years, the domestic drying equipment has been mainly based on imitation, and the equipment lacks its own characteristics and has a poor competitiveness in the international market. The level of drying equipment depends primarily on the drying technology. The current state of our country is that there are many manufacturers of drying equipment, but fewer people research and develop drying technology. In some dry equipment companies abroad, the number of people engaged in the development of drying technology even exceeds the number of manufacturing personnel, and always strives for the market with high technology. If you want to have a certain degree of competitiveness at home and abroad, you must establish a development base with a high level of professionalism and complete experimental means. One of the effective ways is to establish an integrated scientific research and production institution, to arm and produce scientific research, and to support scientific research with production in order to improve the technical level of drying companies, enhance the technical content of products and production potential. In the process of technology development, we mainly pay attention to the following:
(1) Strengthening basic theoretical research Fundamental theoretical research is the basis for the development of new technologies. Only by strengthening the basic research in the field of drying can the drying technology be continuously developed. The development of drying technology can promote the progress of drying equipment. In China's universities and research institutes, we must establish basic research laboratory equipment with complete control means and establish a basic research base for drying. In-depth study of the drying mechanism lays a theoretical foundation for technological development. Only in this way can our drying equipment gradually take the road of self-innovation.
(2) The study of the physical properties of materials can not be separated from the materials. The characteristics of the materials to be dried in the drying process and the requirements for the products are different. Due to the difference in the nature of the materials, the complexity of the drying equipment and the diversification of the structure of the dryer are also formed. For industrialized drying equipment, the drying mechanism and equipment structure are not difficult to master. It is more difficult to adjust the equipment structure for specific materials to meet the requirements of the materials to be dried. The technicians of the drying equipment factory mostly take mechanical equipment as the major. They often regard the drying equipment as purely mechanical products. The limitations of the profession make it more contemptuous to the physical properties of the materials, and the defects in the properties of the materials lead to unsatisfactory equipment. Therefore, a successfully designed dryer is the correct understanding of the material first, and then it is a reasonable mechanical design. Therefore, the amount of drying equipment design personnel should pay attention to the study of the physical properties of materials.
(3) Research on automation control The low level of automation of domestically produced drying equipment and the backwardness of control means are common problems. As far as the current level of automation in China is concerned, it is not difficult to solve the control problem in the drying equipment, but the most important problem is the problem of the reasonable combination of the self-controlled professional and the drying equipment. As mentioned earlier, different materials have different requirements for dryers. Similarly, there are major differences in the requirements for control methods for different materials. The role of automatic control in dryers is well known, but its one-time investment is also a matter of most concern to people. Sometimes the investment in control equipment even exceeds the price of the mechanical part of the dryer. If the scheme is unreasonable, or fails to meet the process requirements, or causes a waste of investment, these are the concerns of the investors. It is necessary to determine the control method for the dryer and the drying process most reasonably, and to determine the appropriate control method for the specific drying project. This is also the subject that should be studied at present.
(4) Research on drying of high value-added special materials In recent years, various new materials have been successfully developed and covered all aspects of national production. Many new materials have the characteristics of stable product quality, strict control of the drying process, strong processability, and high value-added materials. The emergence of new materials also presents new challenges for drying technology. Such as ultrafine powder, liquid material viscosity is made of powder, nano-material drying, micro-capsule powder preparation, etc., are drying problems that need to be solved.
(5) Study of amplification effect <The amplification process of the drying equipment is not a simple geometric amplification, involving fluid mechanics, mechanics, thermodynamics, heat transfer, material science, dust and corrosion protection, electrical control and other disciplines. It is very likely that some problems will arise during the amplification process. Therefore, the magnification of the drying device is by no means a simple geometric enlargement. In this respect, it largely depends on the experience of industrialization, the mastery of the physical properties of materials and the understanding of drying equipment. The phenomena that may occur during the amplification process should be rationally and objectively predicted and can propose corresponding solutions. The so-called research amplification effect is to grasp the drying theory and drying technology while paying attention to accumulating practical experience, summarizing the amplification law of the equipment and accumulating experience for the project.
2, improve the user's ability to identify the drying equipment China's drying plant so many, and can have a place in the market. It should be said that in a large number of drying equipment factories, the equipment produced has a certain difference in technology and product quality, but why can it survive? This has a lot to do with the ability of domestic user groups to set up. Drying equipment is different from other general-purpose equipment. In addition to the visible factors such as the mechanical quality, the technical content and use results cannot be found by users. Due to the poor user's ability to discriminate the dryer, objectively, some lower-level drying equipment manufacturers have provided space for survival. Cultivating markets and popularizing dry knowledge can play a positive role in purifying and integrating markets. Only in this way can the survival of the fittest be achieved through the market, so that manufacturers with development potential can survive and develop. Although the drying equipment is a special product, it is not impossible to identify the advantages and disadvantages. The user should deal with the drying equipment factory as follows when selecting the drying equipment.
(1) The inspection factory shall firstly inspect the equipment factory to find out whether the plant has experimental equipment, whether there is experimental data for this material, and what the experimental results are. Listen carefully to the report of the factory's experimentation. Understand the manufacturing capabilities of the required models, whether the factory's processing methods can meet the requirements, and listen to the factory's method of processing the model.
(2) Work performance The level of the factory depends to a certain extent on its work performance. Under normal circumstances, the more work performance, the stronger the equipment manufacturing capability. Because the technology will continue to improve through the manufacturing equipment. If it is the first time that the model is manufactured, the user must be cautious, and the maturity of the technology should be carefully demonstrated.
(3) Factory reputation Drying equipment should be maintained frequently, and users sometimes find it difficult to solve problems during use. Some wearing parts have no universality. Whether the factory can provide technical consultation and spare parts for users for a long time is a problem that users must consider when choosing drying equipment manufacturers. The other users of the plant should be visited to understand the reputation of the company.
(4) Examining the same type of machine As mentioned earlier, drying equipment can also exhibit one or more of these problems during amplification. It is necessary to examine whether the factory has the experience of the same model and the same specifications required by the manufacturer. If this experience is accumulated, the success rate of equipment is relatively high.
(5) Examining the drying effect of the same or similar materials If further investigation is performed, it is preferable that the equipment factory can provide the drying experience of the same material. This will increase the credibility of this project even more. Despite this, drying is a highly specialized discipline and it is difficult for non-professionals to master it in a short period of time. If possible, it is advisable to hire a drying expert to check the project and improve the reliability of the plant.
1. Strengthening basic research work For many years, the domestic drying equipment has been mainly based on imitation, and the equipment lacks its own characteristics and has a poor competitiveness in the international market. The level of drying equipment depends primarily on the drying technology. The current state of our country is that there are many manufacturers of drying equipment, but fewer people research and develop drying technology. In some dry equipment companies abroad, the number of people engaged in the development of drying technology even exceeds the number of manufacturing personnel, and always strives for the market with high technology. If you want to have a certain degree of competitiveness at home and abroad, you must establish a development base with a high level of professionalism and complete experimental means. One of the effective ways is to establish an integrated scientific research and production institution, to arm and produce scientific research, and to support scientific research with production in order to improve the technical level of drying companies, enhance the technical content of products and production potential. In the process of technology development, we mainly pay attention to the following:
(1) Strengthening basic theoretical research Fundamental theoretical research is the basis for the development of new technologies. Only by strengthening the basic research in the field of drying can the drying technology be continuously developed. The development of drying technology can promote the progress of drying equipment. In China's universities and research institutes, we must establish basic research laboratory equipment with complete control means and establish a basic research base for drying. In-depth study of the drying mechanism lays a theoretical foundation for technological development. Only in this way can our drying equipment gradually take the road of self-innovation.
(2) The study of the physical properties of materials can not be separated from the materials. The characteristics of the materials to be dried in the drying process and the requirements for the products are different. Due to the difference in the nature of the materials, the complexity of the drying equipment and the diversification of the structure of the dryer are also formed. For industrialized drying equipment, the drying mechanism and equipment structure are not difficult to master. It is more difficult to adjust the equipment structure for specific materials to meet the requirements of the materials to be dried. The technicians of the drying equipment factory mostly take mechanical equipment as the major. They often regard the drying equipment as purely mechanical products. The limitations of the profession make it more contemptuous to the physical properties of the materials, and the defects in the properties of the materials lead to unsatisfactory equipment. Therefore, a successfully designed dryer is the correct understanding of the material first, and then it is a reasonable mechanical design. Therefore, the amount of drying equipment design personnel should pay attention to the study of the physical properties of materials.
(3) Research on automation control The low level of automation of domestically produced drying equipment and the backwardness of control means are common problems. As far as the current level of automation in China is concerned, it is not difficult to solve the control problem in the drying equipment, but the most important problem is the problem of the reasonable combination of the self-controlled professional and the drying equipment. As mentioned earlier, different materials have different requirements for dryers. Similarly, there are major differences in the requirements for control methods for different materials. The role of automatic control in dryers is well known, but its one-time investment is also a matter of most concern to people. Sometimes the investment in control equipment even exceeds the price of the mechanical part of the dryer. If the scheme is unreasonable, or fails to meet the process requirements, or causes a waste of investment, these are the concerns of the investors. It is necessary to determine the control method for the dryer and the drying process most reasonably, and to determine the appropriate control method for the specific drying project. This is also the subject that should be studied at present.
(4) Research on drying of high value-added special materials In recent years, various new materials have been successfully developed and covered all aspects of national production. Many new materials have the characteristics of stable product quality, strict control of the drying process, strong processability, and high value-added materials. The emergence of new materials also presents new challenges for drying technology. Such as ultrafine powder, liquid material viscosity is made of powder, nano-material drying, micro-capsule powder preparation, etc., are drying problems that need to be solved.
(5) Study of amplification effect <The amplification process of the drying equipment is not a simple geometric amplification, involving fluid mechanics, mechanics, thermodynamics, heat transfer, material science, dust and corrosion protection, electrical control and other disciplines. It is very likely that some problems will arise during the amplification process. Therefore, the magnification of the drying device is by no means a simple geometric enlargement. In this respect, it largely depends on the experience of industrialization, the mastery of the physical properties of materials and the understanding of drying equipment. The phenomena that may occur during the amplification process should be rationally and objectively predicted and can propose corresponding solutions. The so-called research amplification effect is to grasp the drying theory and drying technology while paying attention to accumulating practical experience, summarizing the amplification law of the equipment and accumulating experience for the project.
2, improve the user's ability to identify the drying equipment China's drying plant so many, and can have a place in the market. It should be said that in a large number of drying equipment factories, the equipment produced has a certain difference in technology and product quality, but why can it survive? This has a lot to do with the ability of domestic user groups to set up. Drying equipment is different from other general-purpose equipment. In addition to the visible factors such as the mechanical quality, the technical content and use results cannot be found by users. Due to the poor user's ability to discriminate the dryer, objectively, some lower-level drying equipment manufacturers have provided space for survival. Cultivating markets and popularizing dry knowledge can play a positive role in purifying and integrating markets. Only in this way can the survival of the fittest be achieved through the market, so that manufacturers with development potential can survive and develop. Although the drying equipment is a special product, it is not impossible to identify the advantages and disadvantages. The user should deal with the drying equipment factory as follows when selecting the drying equipment.
(1) The inspection factory shall firstly inspect the equipment factory to find out whether the plant has experimental equipment, whether there is experimental data for this material, and what the experimental results are. Listen carefully to the report of the factory's experimentation. Understand the manufacturing capabilities of the required models, whether the factory's processing methods can meet the requirements, and listen to the factory's method of processing the model.
(2) Work performance The level of the factory depends to a certain extent on its work performance. Under normal circumstances, the more work performance, the stronger the equipment manufacturing capability. Because the technology will continue to improve through the manufacturing equipment. If it is the first time that the model is manufactured, the user must be cautious, and the maturity of the technology should be carefully demonstrated.
(3) Factory reputation Drying equipment should be maintained frequently, and users sometimes find it difficult to solve problems during use. Some wearing parts have no universality. Whether the factory can provide technical consultation and spare parts for users for a long time is a problem that users must consider when choosing drying equipment manufacturers. The other users of the plant should be visited to understand the reputation of the company.
(4) Examining the same type of machine As mentioned earlier, drying equipment can also exhibit one or more of these problems during amplification. It is necessary to examine whether the factory has the experience of the same model and the same specifications required by the manufacturer. If this experience is accumulated, the success rate of equipment is relatively high.
(5) Examining the drying effect of the same or similar materials If further investigation is performed, it is preferable that the equipment factory can provide the drying experience of the same material. This will increase the credibility of this project even more. Despite this, drying is a highly specialized discipline and it is difficult for non-professionals to master it in a short period of time. If possible, it is advisable to hire a drying expert to check the project and improve the reliability of the plant.
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