Centrifugal fans are auxiliary production equipment commonly used in stone processing enterprises. They are mainly used in ventilation and dust removal devices, such as cyclones and bag dusters in the stone cutting and grinding processes. All need to use centrifugal fans to remove dust from the production site to ensure that The production environment is clean and protects the physical and mental health of producers. Fan is a kind of equipment with high energy consumption, and the power resource of consumption fan is larger in stone processing. With the current shortage of energy in China and the popularization and application of high-yield and high-efficiency working surfaces, energy conservation and consumption reduction have become a common concern of stone manufacturing enterprises. Many stone manufacturing enterprises take reducing power consumption of fans as an important task at present. In addition to reducing the power consumption of the fan, in addition to improving the efficiency of the fan itself, it is most important to use a reasonable adjustment method for the fan.
At present, the energy-saving adjustment methods of fans in stone processing enterprises are still relatively old, and throttling adjustment is generally used. When throttling adjustment is used, the flow of the fan is mainly adjusted by regulating valves or throttling baffles. The throttling flow of the fan is large, and even at more than 50% at low load, due to the throttling loss and deviation from the high-efficiency zone operation, Energy waste is very serious. And if the speed of the fan is adjusted, the throttling loss can be cancelled, and the fan can always be operated in the high-efficiency zone, so the electric energy can be greatly saved. It can be said that adjusting the speed of the fan to run the fan is an effective way to save energy and reflects the new trend of the current building material industry production. The centrifugal fan is essentially a variable flow constant pressure device. When the speed is constant, the pressure-flow theoretical curve of the centrifugal fan should be a straight line. Due to internal losses, the actual characteristic curve is curved. The pressure generated in a centrifugal fan is greatly affected by changes in intake air temperature or density. For a given amount of intake air, the lowest pressure is generated at the highest intake air temperature.
Centrifugal fans are a universal device. Our great ancestors started using this device long, long ago. The centrifugal fan we use today is actually an improved device of the previous fan. In the past, our ancestors did not have today's advanced industrial level. Many parts are made of wood, which made the power of the previous fan unfortunately low, and it could not play the main function of the fan. Centrifugal fans are a very common device. You may see centrifugal fans in many centers. For example, ventilation, dust extraction and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; grain Drying and delivery; you can see the style of centrifugal fans in the wind tunnel wind source and hovercraft inflation and propulsion.
At present, centrifugal fans belong to general machinery, and there are many downstream demand industries, including petroleum, electric power, chemical industry, textile, rail transportation industry and so on. Most of these downstream industries are in a period of rapid development, with increased investment in fixed assets and faster equipment upgrades, which have brought a lot of room for development in the wind turbine industry. Data show that in recent years, the sales revenue of China's wind turbine industry has increased year by year. In 2013, the industry's sales revenue reached 80.873 billion yuan, an increase of 8.83% year-on-year, indicating that China's wind turbine industry demand market is relatively strong. The centrifugal fan is designed using the principles of physical kinetic energy conversion and energy conservation. Is a kind of high-tech products.
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