Can prevent air intrusion into the pump and a large amount of water leakage from the pump. The shaft seal device serves as a seal between the pump body and the pump shaft. The radial force and axial force are reasonably distributed, and the bearing form, type, cooling and lubrication mode are correctly selected, so as to meet the requirements of low heat and high life of the bearing. In order to extend the service life of the bearing, the hydraulic design and structural design were optimized. In order to facilitate maintenance and disassembly, the disassembly ring is provided to avoid the phenomenon of cutting shaft caused by the disassembly. The impeller is equipped with a back blade to discharge the backflow slurry in time, so as to improve the volume ratio, reduce the backflow and erosion, and improve the life of the flow parts. The impeller and the back guard plate are equipped with labyrinth clearance seal, which greatly reduces the leakage of slurry to the packing box and effectively ensures the reliability of the seal. In order to effectively prevent shaft seal leakage, the combination of dynamic seal, packing seal or mechanical seal is adopted. The pump body uses double pump shell (inside and outside double metal structure), double pump shell shell structure is vertical open, the outlet position can be installed at 45° intervals, rotating 8 different positions. But from the principle of slag slurry pump belongs to a centrifugal pump, in the iron and steel enterprises is mainly used for the converter dust removal water, blast furnace gas washing water, continuous casting turbid ring water and steel rolling turbid ring water system of mud transport. The slurry pump delivers a mixture of solid particles containing dross and water.
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