Pneumatic Pump is a new type of transport machinery, is the most novel type of pump in China.Using compressed air as the power source, all kinds of corrosive liquids, granular liquids, high viscosity, volatile, inflammable, highly toxic liquids can be exhausted by light absorption.Invented by American engineer William wilton, the pneumatic pump was introduced to China.There are five kinds of materials commonly used: plastic, aluminum alloy, cast iron, stainless steel and teflon.According to different liquid media, Diaphragm Pump adopts buqing rubber, chloroprene rubber, fluoro rubber, polytetrafluoroethylene, polytetrafluoroethylene respectively.The early domestic customers bought through the importer agent, the price is expensive and the maintenance is complicated.With the development of industry, the market share of domestic Pneumatic Diaphragm Pump has exceeded that of imported products.In order to install in a variety of special occasions, used to pump a conventional pump can not pump the medium, all achieved satisfactory results. Mine Pneumatic Pump,Pneumatic Pump,Pneumatic Mining Water Pump,Pneumatic Sump Pump Jining Dongda Electromechanical Co.,Ltd. , https://www.coal-mine-equipment.com
Reasonable determination of the relationship between open pit mining and safety
Since the mining is from the top to the bottom, the upper steps are firstly mined to the realm, and some of the fixed slopes are formed, and it is required to remain stable for a long time without a large number of landslides. In operation, the smaller the final slope angle, the safer it is. However, if the slope angle is too small, a large amount of rock-peeling will be increased during the mining process, resulting in deterioration of the economic benefits of the mine. If the final slope angle is increased, it will exceed the angle of safety and stability, which will cause slope landslide and endanger the safety of the stop workers. A large open pit mine in the country has hundreds of thousands of m 3 landslide accident occurred, causing great economic losses to the mines, and therefore can not blindly increase the final slope angle, to prevent accidents. The final slope angle of some mines in China varies from 35° to 65°.