Mine air pump features: 1, small size, light weight, compact, easy to move; 2, low noise, adaptability, improved construction environment; 3, small power, air consumption, high efficiency; 4, simple structure , parts, long life, easy on-site maintenance. The working conditions: 1, using air pressure :0.15-0 .65 Mpa 2, matching hose diameter; a, intake pipe: 25mm b, exhaust pipe: 64mm c, outlet: 51mm 3, use temperature :0-60 ℃ 4, PH value of water :4 -105, maximum depth: ≤ 5m 6, maximum dewatering operation time: ≤ 5min 7, the maximum continuous operation time: ≤ 300h 8, sewage density: ≤ 1100kg/m3 9, water, sand, slag and water volume ratio: ≤ 6% 10, the maximum diameter of solid particles over: ≤ 6mm main performance parameters: Model Maximum Head (m) Max flow rate (m3 / h) Air consumption (m3/min) limit speed (r / min) Dimensions Height * Diameter volume (kg) WQTB (FQW or BQF) 70/35 70 35 0.3-4.1 5500 350 * 260 30 WQTB (FQW or BQF) 70/35 70 30 0.3-3.7 5300 428 * 274 40