Repair Plan for Severe Leakage Failure of Slurry Pump

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• TIME : 2025-11-25

Severe leakage of slurry pumps is often caused by sealing system failure. It is necessary to investigate in the order of "flushing water → pressure cover → shaft sleeve → packing → pump body", replace worn parts in the core, and install them in a standardized manner.

Core cause of malfunction

The serious leakage of slurry pump is mainly caused by the failure of the sealing system, which includes 7 types of reasons:

Packing installation error: The cut is not staggered by 90 ° -120 ° or the cover is too tight/loose

Wear of shaft sleeve: grooves appear on the surface (wear depth>1mm needs to be replaced)

Flushing water malfunction: insufficient pressure (0.05-0.15MPa higher than the pump chamber) or pipeline blockage

Improper filling material: Failure to use wear-resistant aramid/carbon fiber filling, or aging failure

Internal wear of pump body: Wear of impeller and guard plate leads to increased shaft movement

Equipment structural issues: bent shaft or cracked packing box

Sealing water system failure: water ring wear or pipeline blockage

Key Maintenance Specifications

Installation requirements: The packing should be placed in a single piece, with adjacent cuts staggered at an angle, and the gland bolts should be evenly tightened

Material selection: aramid/carbon fiber filler is used for heavy abrasion conditions, and polyurethane (with poor temperature resistance) can be selected for fine particle conditions

Maintenance cycle: Regularly check the flushing water pressure, shaft sleeve wear, and packing elasticity. It is recommended to replace the packing every 3 months

　　This article originates from https://www.fuyangpumps.com/news/495.html. Please indicate the source when reprinting.

(Editor in charge: Slurry Pump https://www.fuyangpumps.com/)

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