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NEAT Amsteg and Erstfeld construction sites, Switzerland

The project:


New Transalpine Railway (NEAT), Amsteg and Erstfeld construction sites


Executing company:

RL Pumpenanlagen GmbH, Wollerau


The problem:


Incoming contaminated drainage water from the tunnels are guided to the collection basin of the sand press. This was initially done with standard commercial construction pumps, but the impellers were worn out after a very short time.


Our solution:


Four GPN3-80 Tsurumi mud pumps with agitator were used. This 4-pole jacket-cooled pump is designed for use in the harshest of mud environments, so that the impeller, agitators, and suction plates are fabricated of custom-coated chromium cast iron with a Brinell hardness of 415 to 425. After 6 months of use, almost no wear could be detected.

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U slučaju abrazivnog i korozivnog korišćenja, u nekim komponentama može doći do prirodnog habanja. U pogledu gornje primene do habanja može doći pre svega kod rotora, agitatora, usisne ploče, rukavca vratila, uljanog prstena, mehaničke zaptivke, kućišta pumpe, sita, kućišta motora i ispusne spojnice. Radni vek ovih delova može znatno da varira zavisno od radnih uslova i može biti kraći od garantnog perioda.
U tom smislu obratite pažnju na naše opšte uslove korišćenja koje vam takođe na zahtev šaljemo poštom.