Electric mine sewage pump is suitable for coal mine underground where methane (commonly known as gas) and coal dust explosion danger places, transport containing sediment, fibers and other insoluble solid mixed sewage. It is suitable for coal mine where methane (commonly known as gas) and coal dust explosion are dangerous. It can transport mixed sewage containing insoluble solid substances such as sediment, slime, gangue, cinder, fibre and so on. It can also be used in building, hospital, residential district, municipal engineering, road traffic and construction, factory sewage discharge, small sewage treatment and other occasions to discharge wastewater containing solid particles, long fibers, rainwater, sewage.
Electric mine sewage pump product specifications are complete, power range from 2.2kW to 315kW, flow range from 10m3/h to 2500m3/h, lift range from 7m to 700m, all products have achieved full lift, no overload. The company perseveres in technological innovation of its products, resolving the key technical problems of sewage and sediment discharge submersible pump in product structure, parameter optimization, manufacturing process, operation efficiency, sealing and leak prevention, material application and so on. It has more than 20 patented technologies and applied many research results, forming a mature manufacturing process of motor and electric pump, which is similar to domestic similar products. It has the advantages of safety, reliability, lightness and practicability, good performance of sewage discharge and sediment discharge, long service life, reasonable pattern spectrum and convenient selection.
The explosion of submersible pump of electric mine sewage pump is mainly related to the water intake of motor and the overload heating of motor, and ultimately to the thermodynamic characteristics of water when it is heated, that is, to the temperature and pressure of water vapor. If the motor shell only has a sealing device and no pressure relief device, it is like a boiler without a safety valve has a potential explosion hazard. Once it explodes, it is a steam explosion.
With overheat protection and overload protection: for example, accidents may lead to abnormal temperature rise of pump motor, micro-pump will automatically protect the shutdown to avoid motor burning; if foreign body falls into the motor, it may jam, pump will automatically protect the shutdown to avoid motor burning; so the self-protection function of WNY series of new Weicheng micro-pump is perfect.
Submersible pumps used in coal mines are equipped with motors, and then forced sediment discharge will result in insufficient power; at the same time, the motors lack the necessary "relief safety valve" for sediment discharge. Under such conditions, the main cause of the explosion of submersible pumps is probably that the motor shell itself is a "sealed container", "water source" is the water intake of the motor chamber caused by the vibration of sediment discharge, and "heat source" is the overload conductivity of sediment discharge. Causes abnormal fever in the motor chamber.