R＆D and application of the technique for sealing the packing sleeve of slurry pump at Tunlan Coal Preparation Plant

The sealing of the slurry pump of Tunlan plant is found to be poor in performance. To tackle this problem and other troubles arising therefrom, the packing sleeve sealing technology is applied based on the result of a comparison and analysis of the key sealing technologies currently available. Following a introduction to the design idea of the packing sleeve deal, the material selected for processing the annular shaft sleeve, and the field testing result, the paper goes to dwell on the performance of the sealing technology and the economic benefit gained. Practice shows that the leakage phenomenon has been basically eliminated, and a favorable economic result can be expected due to the good sealing performance, prolonged service life of pump shaft, noticeable reduction of labor intensity and greatly improved working environment.