SKF recently developed a high-speed motor with magnetic bearing operating mode. Allegedly, the motor can reduce the energy consumption of sewage treatment plants, compared with the traditional blower drive system, the new motor can reduce energy consumption by 40%. In this sense, the potential for energy savings is enormous, as aeration blowers consume about 80% of the total energy consumption in sewage treatment plants.

SKF calculates: The new 350kW system saves 500,000kWh of electricity throughout the year, equivalent to a reduction of 375 metric tons of carbon dioxide emissions.

The above system (shown) includes a high speed permanent magnet motor (PMM) with a power range of 75-350 kW. This motor uses magnetic bearing control. Unlike traditional induction motors, high-speed permanent magnet motors can maintain constant efficiency at half the rated load and rated speed. At the same time, the new design uses fewer mechanical parts than conventional vented blower drives, reducing the need for post-maintenance. Added built-in monitoring and diagnostic capabilities to ensure system performance and reliability.

Vincent Megret, SKF's Magnetic Systems general manager, said the new drive system meets the need for high energy efficiency, reducing maintenance and service costs and meeting air quality and safety standards. He predicts that the 350kW system saves just one year's energy costs enough for the new system cost.

Soybean Drying Tower

Soybean Dryer is an ideal drying equipment to dry grain and oilseeds, soybean is input to the top by bucket elevator, through the feeding device, to ensure that the equipment during operation is always in full load condition. Induced draft fan introduce hot air into inside of the tower body, through the combined effects of inwardly inverted V-
shaped baffle bottomless and processing and staggered rows of V-shaped baffle, so that soybean can be mixed with hot air, as well as dry air access routes, a majority of dried air can be recycled, water vapor generated by drying the material discharged from the dryer exhaust system, it consumes very little fuel. 5HY series low-temperature batch circulating soybean dryer adopts low temperature drying method to achieve drying.
Soybean dryer is designed by Hongyun based on many advantages of domenstic dryers and foreign dryers.Long-term production practice proves that this soybean dryer has advanced technology and reasonable structure. It has many advantages such as good drying quality, less energy consumption, low investment, high adaptability and so on. It is suitable for drying corn, rice, sorghum, wheaat, barley, soybean and other crops.
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