Common K, DK Series About a fan of mine, a new generation of energy-saving ventilators K series coal mine fan manufacturers, mainly used in metal surface or underground mines shots fan, auxiliary fan ventilation, ventilation can be used for other occasions. 2, the main properties of the series of energy-saving fan, technical indicators are as follows: (1) series machine number: №7 ~ №26; (2) Series speed: 1450,980,730 r / min; (3) the amount of wind range: 2.0 ~ 164.2m3 / s; (4) the full voltage range: 38 ~ 3819pa; (5) Power range: 1.1 ~ 500kW; (6) the fan efficiency: K-type single-stage total pressure efficiency η = 94%, DK-type rotating hydrostatic efficiency η = 86%; (7) operating noise: LA≤85dB (A). Local fan ventilation normal state when the gas concentration sensor Heading Face T1 and T2 exceeds the set limit value (0.7%), the gradual increase in the frequency inverter mine fan model, the fan automatically increase the amount of wind; when the gas concentration sensor T1 Heading Face and T2 below the setpoint limit (0.5%) when the mine fan, reducing the frequency inverter automatically reduce fan flow. Heading Face gas concentration sensor T1 or T2 exceeds the alarm set value (1.0%) when the alarm, the system enters the dilution gas state. Heading Face gas concentration sensor T1 or T2 exceeds the power off setting Face value (1.5%) non-intrinsically safe power supply cut off, the system enters the exhaust gas state. Value in brackets shows the default settings, you can change according to the user specific circumstances. Mine fan-made, Zibo Blower (certified), Jinzhou coal supplied by Zibo Blower fan Limited. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) is an industry leader in Shandong Zibo, 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. Zibo Blower leadership with the staff warmly welcome all inquiries negotiations to create a better future Zibo Blower.