The ultrasonic level sensor integrates non-contact switch, controller and transmitter into one, suitable for small storage tanks. Ultrasonic liquid level sensor flexible design can be used in the integrated system or a substitute float switch, electrical conductivity and static pressure type sensor, and also suitable for the fluid flow control and chemical feed system of integrated application of ultrasonic liquid level sensor is widely used in all kinds of atmospheric storage tank, tank, small cans and small container, the pump lift stations, waste water storage tank, etc. Ultrasonic Level Sensor,Ultrasonic Fuel Level Sensor,Ultrasonic Liquid Level Sensor,Ultrasonic Water Tank Level Sensor Xi'an Gavin Electronic Technology Co., Ltd , https://www.cngamicos.com
“Green and smart are the theme of this exhibition, and it is also the development trend of the world machine tool industry. Green machine tools refer to the greening of machine tools in production and application, ie lower energy consumption, less materials, lighter weight and efficiency. Higher." Hao Ming, president of China Machine Tool Corporation, said at the 11th China International Machine Tool Exhibition held recently. At the Intelligent and Green Manufacturing Summit held in the same period of the exhibition, the participating experts unanimously called for environmental protection, energy conservation and emission reduction to be the dominant trend in the industrial upgrading of the manufacturing industry, especially as the working machine. It can be said that in the face of traditional high energy consumption, The current situation of high material consumption, the development of high energy consumption green machine tool technology is the only way to achieve sustainable development of the manufacturing industry, and has great significance for the modernization of the industrial structure of China's machine tool industry. "The world is optimistic about the Chinese market, coupled with the high-end products of local enterprises, which will lead to continuous growth of imports for many years." Hao Ming pointed out that the use of machine tools and cutting tools in large aerospace industries, on the one hand, the level of domestic machine tools and tools cannot To meet the requirements of the rapid development of the aviation industry, imported machine tools and tools account for a large proportion; on the other hand, Western developed countries restrict exports of key components and manufacturing equipment in the aviation field. "Therefore, this is a key user field that China's machine tool industry can make a difference, and it should be an effort to break through." Hao Ming further pointed out that the country has proposed the goal of 80% localization of machine tools in the aerospace industry by 2020. There is a need for concerted efforts across the industry, including CNC systems, functional components, and host companies. “The machine tool is the working machine. The state should support the machine tools needed by the aerospace industry. In addition, the company should also focus on the products, develop its own strong products for the user field, and increase the investment in the development of featured products. In the mid-to-high-end market, otherwise the price war in the low-end market will seriously drag down the benefits.†He admits that even domestically produced high-end machine tools, most of the key components are imported, objectively speaking, the imported components are stable, reliable and functional. It is better than domestically produced products. "We must break through this bottleneck, otherwise we can only follow other countries." Professor Cao Huajun, director of the Institute of Green Manufacturing Technology of Chongqing University, believes that the key to achieving green manufacturing in China's metal processing industry is the development of energy-efficient green machine tool technology. The 2010 National Bureau of Statistics also shows that China's manufacturing energy consumption accounts for 60% of total energy consumption, generating about 5.5 billion tons of non-hazardous waste and 700 million tons of hazardous waste each year. "The number of machine tools in China exceeds 8 million units. In 2011, the output of machine tools reached 859,900 units, ranking first in the world. However, China's machine tool industry consumes a lot of materials, consumes a lot of energy, and has low reliability." It is reported that according to the EU's "next generation Production system" research plan, green machine tools should have the following characteristics: First, the main parts of the machine tool are made of renewable materials; second, the weight and volume of the machine tool are reduced by more than 50%; third, by reducing the quality of moving parts, reducing the power of idle operation, etc. The measures reduce the power consumption by 30-40%; the fourth is to reduce the waste of the process by 50% to 60% to ensure a basically non-polluting working environment; and the fifth is that the material of the scrapped machine tool is close to 100% recyclable. Wang Zemin, senior engineer of Qiqihar Second Machine Tool, believes that green design should be promoted in the design process, such as implementing virtual design, implementing low-carbon design through technical structure innovation, and lightweight design. "It is not easy to fully meet such requirements, but the academic and business circles at home and abroad are working hard." Cao Huajun also believes that the lightweight of machine tools, especially the lightweight design and application of moving parts, is the key technology to improve the energy efficiency of machine tools. one. It is reported that lightweight technology is mainly carried out from two aspects, one is to use materials that are lighter in weight but can meet the same requirements, and the other is to optimize the structure of machine tools to reduce the use of materials. “For example, plastics with lower density and aluminum alloys can replace steel materials in some non-load-bearing parts, especially in the appearance parts of machine tools, while meeting the requirements, it is easier to achieve better appearance. Some foreign machine tools Even using carbon fiber as a structural member greatly reduces the weight of the whole machine. It indicates a direction of machine tool development." Kong Lingyou of Shenyang Machine Tool pointed out. Kong Lingyou emphasized that the green design of the machine tool also has an easily overlooked aspect, that is, the scalability of the system, including software and hardware. “In the design phase, you should consider the use of multi-functional components and modular components to assemble the product. The same machine tool can unify the interface of the components. When designing the machine tool, you should also reserve the function expansion space. The product with good upgradeability can Avoid the waste of resources caused by users re-purchasing equipment.†Cao Huajun called for the machine tool industry to adopt more energy-efficient motors and frequency conversion technology during manufacturing. “The energy cost of an electric motor accounts for more than 97% of its entire life cycle cost. Therefore, efficient motor products can be optimized on the basis of electricity, magnetism, machinery and ventilation to reduce the loss of all aspects of the motor. Reduce the cost of operation and speed up the recovery of investment." For example, in conventional transmission systems, the energy generated by braking is often wasted in the form of thermal energy, and the innovative inverters with regenerative energy feedback function can be used to Braking energy is fed back into the grid instead of being consumed in the braking resistor. For example, a brand of inverter can save up to 50% of energy by implementing intelligent regenerative energy feedback technology. “Energy-efficient green machine tool technology has become a hot spot in the domestic and international industry. The lightweight technology of moving parts not only reduces the material consumption of machine tools, but also improves the operating efficiency; energy management technology strengthens the management of energy consumption during the operation process. An important step towards greening; high-efficiency motor and variable frequency technology improve the operating efficiency of the drive operating system; efficient cooling and lubrication technology achieves efficient use of process resources and efficiency." Cao Huajun and other experts believe that improving process stability Sexuality, reducing processing energy consumption and material waste caused by processing scrap is also an important aspect of energy saving; using high-precision forming technology instead of roughing or semi-finishing also has great energy saving prospects.