Working principle
The lip seals of a LIQUIDYNE run over a partially grooved bush, which is placed over the pump shaft. The helical grooves combined with the peripheral velocity of the bush create a water flow between grooves and lip seal from the flushing water supply to the flushing water discharge. In this process, a hydrodynamic lubricating film is created, the water pressure is reduced to atmospheric level and the heavy loaded part of the bush is cooled. 

Condition monitoring
Over time, the helical grooves on the bush gradually wear down. Less water is transported over the bush and the amount of water leaving the discharge decreases. When the discharge flow is at 20% of the initial flow, maintenance should take place. By plotting the decrease of the discharge flow, maintenance can be planned efficiently, MTBM can be optimized, cost can be saved and sudden pump failure can be avoided.

Want to know more? Download the LIQUIDYNE brochure or product sheet, or contact Mr Peter Jap, Area Manager LIQUIDYNE.

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