Mine rescue and drainage pump

mine rescue and pumps, mine drainage pumps

a, mine rescue and pump product overview

high power, young cheng chien water pump and its corollary equipment system, the construction of coal mine flooding emergency rescue and disaster relief and security in our country modernization coal mine is of great significance, mine rescue and pump is almost the * of mine accident emergency rescue equipment effectively. In 1976, the Chinese government to the original in the federal republic of Germany, the company purchasing a large batch of 800 ~ 1600 kw power mine rescue and drainage pump, and adopt the way that the skill trade combine part of the introduction of large-scale mine submersible electric pump manufacturing technology, the current domestic large mine rescue and pump and pump light company in very much the same in structure, material.

2, the main characteristics of mine emergency rescue pumps

the key features of the mine rescue and water pump are large flow, high head, large power, unit weight, size, and high lift as the main characteristics. Because of the high head, water pump must adopt many forms of multistage centrifugal pump impeller. A lot of impeller consists of two groups, two groups of impeller two-way symmetrical layout. Each group of the impeller and the corresponding guide vane suits on the spindle and the corresponding pressure into the middle, guide vane is located in between the impeller and the middle, guide vane and middle fixed connection, impeller and shaft adopts the key connection, many middle and catchment section are set on the spindle. Pressed on the group in the midsection of the impeller, the catchment section and pressed under group in the midsection of the impeller by tightening bolts is an organic whole repeatedly, middle catchment section in the group of impeller on export position, anti-missile leaf set on the main shaft and is located in the lower impeller entrance location. The submersible pump due to two groups of impeller adopts two-way symmetrical layout, unit operation when the axial water thrust equal, in the opposite direction, the total axial force is zero, prolong the service life of the unit, safe and reliable operation. The pump combinations and divided into two kinds of double suction and single suction and double suction pump flow than single suction pump flow twice and it can automatically balance the axial thrust columns such as big flow submersible pump; In single suction pump impeller two-way symmetrical arrangement to basic balance of the axial thrust, but must be balanced with a single impeller impeller, two forms are basically settled the problem of the balance of the axial thrust. Pumps are basically not destroy force to motor bearing axial load, to prolong the service life of the pump and keep stable performance is very important. Figure 10 - 22 for single suction pump type, the pump has a lot of radial bearing, forces acting on the radial bearing, generally by the mechanical and hydraulic imbalance and bearing gap caused by the eccentric. Bearing lubrication, by the water lubricated bearing of water to keep the cycle by pressure difference. Bearing made of tin bronze, ensure sufficient clearance between bearing and the diameter of axle.

the mine with emergency drainage pump suction hood for slender rotor under water at the bottom of the motor, its advantage is high voltage, small volume, use of water circulation cooling guide bearing and motor, motor efficiency can reach 93%. Submersible motor is made up of upper guide bearing, lower guide bearing, stator, rotor, the base of five parts. Stator casing by plates welded together, the coil from 6 kv modified PVC waterproof cable concentric dress. Lower water filling inside motor, the rotor has a small centrifugal pump, the motor rotates the force inside the water cycle, and the heat to the external high-speed motor well, this is strong in cold water cooling way make the motor size can be made smaller and better work environment. Water resistance of the coil is the heart of the motor, it guarantees the l0kV voltage and under a certain temperature and pressure have good insulation performance, high voltage, introduced by three core mine rubber sets of cables, cable joint half a lap around with self-tightening type tape.

related performance parameters can view: Wells with submersible pump

related articles: mine multi-stage submersible pump

the mine rescue and pump, mine drainage pump pump technology news articles written by professional pump

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