All commercially available version galvanized square suction fan structure is basically the same technical parameters. The main models are 1380 * 1380 * 400mm1.1 kW, 1220 * 1220 * 400mm0.75 kW, 1060 * 1060 * 400mm0.55 kW, 900 * 900 * 400mm0.37 kilowatt four models. All galvanized square suction fan speed version are 450 rev / min fan factory farming, 4-pole motor is 1400 rev / min, motor protection class IP44, B-class insulation. Individual smaller size due to the small amount of wind suction fan, noisy, inefficient ventilation lost significance as a suction fan, not described here. Relatively large suction fan ventilation higher efficiency, more energy efficient. FRP flared suction fan belts from different transmission structure is divided into two kinds of style and straight knot. 1935 breeding fan, Germany first axial flow fans for boilers and other pressure ventilation and the wind; in 1948, Denmark made the running variable pitch axial fans; rotating axial fans, Meridian accelerate axial fans, mixed flow fans and cross-flow fan; in 2002, China's explosion-proof centrifugal fan culture fan wholesale prices in the chemical farming fan curtain, petroleum, machinery and other fields widely adopted, Lin Dong-proof centrifugal fan has been developed. Centrifugal fans are commonly used stone processing enterprises auxiliary equipment, mainly for ventilation and dust removal device, such as stone cutting and polishing process cyclone and baghouse etc need to use centrifugal fan for dust removal treatment on production sites to ensure production clean environment, protect the health of producers. Livestock breeding Fan Minhua Qingzhou temperature control equipment _ _ Changle fan farming community by Qingzhou Hua thermostat plant. Temperature Control Equipment Factory Qingzhou public Hua (www.minhuawenkong.com) is an industry leader in Shandong Weifang, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qingzhou temperature control equipment in China and China leading the staff warmly welcome all inquiries negotiations, China and China Qingzhou temperature control equipment to create a better future.