Modification of the mechanical seal of the slurry pump-

Modification of the mechanical seal of the slurry pump

　2016-12-21　　

The selection of mechanical seal structure type must be based on the original working parameters of the slurry pump (medium pressure, temperature, shaft diameter and speed), medium characteristics (concentration, viscosity, corrosiveness, presence or absence of solid particles and fiber impurities), The working characteristics and environmental conditions of the main machine, the limitation of the main machine's sealing structure size and the stability of the production process are analyzed. The technical parameters of the slurry pump used in Dongpang Coal Preparation Plant: flow rate 280m/h, temperature 30x3, head 80m, speed 1480r/min, medium concentration 500g/L, general corrosiveness, medium particle size ≤0.5mm, and humid working environment. Based on the above technical parameters and referring to the 'Machine Design ManualRenovate the selected auxiliary impeller + mechanical seal combined shaft seal structure, use a cooling water tank seal instead of high-pressure shaft seal water, and fundamentally solve the problem of serious leakage of the original pump shaft seal. The installation is relatively simple, does not require any modification of the pump body, and the workload of mechanical seal modification is relatively small. Therefore, it is technically feasible to reform the mechanical seal device of the slurry pump.　　211.html,

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