Mine submersible pump which is good

Mine submersible pump is mainly used for coal mine central pumping station drainage, coal mine flood disaster after the rescue or drainage drainage, commonly used is a centrifugal pump. Mine submersible pumps are commonly used D-type, DA-type and TSW-type multi-stage centrifugal pump; and the bottom of the water and mining area drainage is commonly used B, BA and BZ single-stage centrifugal pump.
    Mine submersible pump main working parts are impellers, which have a certain number of leaves, impeller fixed on the shaft, driven by the shaft rotation. The pump housing is a spiral diffusion chamber, the suction port of the pump is connected with the water absorption, and the drain is connected with the drain pipe.
    Before the pump starts, the water is injected into the pump by the water injection funnel, and then the pump is started. The impeller rotates with the shaft. The water in the impeller is also rotated by the blade. Under the action of centrifugal force, the water flows from the impeller inlet to the outlet. In this process, the kinetic energy and force of water are improved. After the water discharged by the impeller by the spiral diffusion chamber, most of the kinetic energy into pressure energy, and then transported out along the drain. At this time the impeller inlet is due to the discharge of water and the formation of a vacuum. Water in the suction wells under the action of atmospheric pressure, the suction pipe into the impeller. Impeller constantly rotating, drainage will be carried out without interruption.