We imported 23 Swedish EGGER Pumps(EGGER:the commercial name of the product) last year.These pumps trip frequently.Every time the pump trips,it means that the workers have to open the pump for cleaning a polymer.By analyzing the packing pump internal structure and discussing the basic reasons of the failure of the pump,we find that our chemical medium is so viscous that some of these pumps are blocked.It is important to calculate the pressure value of the flushing water and to determine the available pressure.Apparently,the more the flushing water increases,the less the pump is blocked by Latex.The methods for fixing it are to change its internal structure and to add an additional cooling(flushing)water throttle plate.The results show that its tripped frequency changes from twice or 3 times per day to once per month.The effect is extending the running cycle of these pumps.
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