Fluid circulation centrifugal cleaner with pressure regulator

  • US 5,904,841 A
  • Filed: 06/17/1997
  • Issued: 05/18/1999
  • Est. Priority Date: 01/12/1995
  • Status: Expired due to Term
First Claim
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1. A centrifugal liquid cleaning system for circulated liquid comprising a centrifugal cleaner through which a proportion of the circulated liquid is diverted, the cleaner including a rotor spun by reaction to liquid ejected therefrom through rotor nozzles, a holding sump for ejected liquid and from which said ejected liquid is drained, and a cleaner drainage assistance arrangement comprising a primary inlet port arranged to receive circulated liquid, a diversion port arranged to divert said proportion of the circulated liquid from the inlet port to the centrifugal cleaner, an outlet port to emit said circulated liquid, a liquid induction arrangement between the diversion and outlet ports, including an induction port operably connected to the holding sump of the centrifugal cleaner to entrain liquid from the holding sump into non-diverted circulated liquid flow, and a pressure regulator comprising a by-pass passage extending from upstream of said liquid induction arrangement to downstream of the induction port and including a relief valve biased to close the by-pass passage and respond to a predetermined pressure difference between said inlet and outlet ports to open the by-pass passage and permit liquid to by-pass the liquid induction arrangement.

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