Multi-blade centrifugal fan structure multi-blade centrifugal fan generally current collector by the impeller, chassis, motor and transmission parts (such as the spindle, pulleys, bearings, V-belt, etc.). Impeller by roulette, blades (number of blades is generally 8 to 16), wheel cover, shaft drive. The chassis is composed by snail plate, side panels and legs. Centrifugal fan blade forward or backward blades can be used to adapt to the requirements of the air volume air pressure broader. Muffler and cabinet can do processing, the noise indicators have obvious advantages. The motor and fan is generally connected through a shaft. Cited sirocco wind can be made of dextral and sinistral two types. From the motor side of the front, clockwise rotation of the impeller called right rotation fan, counter-clockwise rotation, known as left-handed. The principle of multi-blade centrifugal fan multi-blade centrifugal fan is to rely on the input of mechanical energy, increase gas pressure side by side to send gas machinery, it is a follower of the fluid machinery. According to the principle of converting kinetic energy as potential energy, the use of high-speed rotation of the impeller to the gas to accelerate and then decelerate to change the flow direction, so that the kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, the gas from the axial into the impeller, the gas flowing through the impeller into light to change, and then enter the diffuser. The gas change the direction of flow in the diffuser, to cause a slowdown, this deceleration of the kinetic energy is converted into pressure energy. Foshan Sanhe Environmental Ventilation Equipment Co., Ltd. was founded in 2000, is a professional manufacturer of FRP corrosion resistant fan, plastic fan, FRP, PP mist purification tower the green ventilation equipment company; company formerly known as Guangzhou Sanhe Environmental ventilation equipment company to meet the needs of the business development, the company in 2009 from Guangzhou Panyu relocation to the Sanshui District, Foshan City, Datang Industrial Park, and renamed as Foshan Sanhe Environmental Ventilation Equipment Co., Ltd.. Foshan Sanhe Environmental Ventilation Equipment Co., Ltd. Tel :0757 -87,270,024 Mobile: 13318880325 Contact: Mr. Li Zaixiong Website: http://www.zgfengji.com/ Address: Foshan Sanshui District Datangpo Center Technology Park Hublot Road