TREA

Displacement pump designed for cleaning

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Information

  • Patent Grant
  • 4746278
  • Patent Number
    4,746,278
  • Date Filed
    Wednesday, August 26, 1987
    37 years ago
  • Date Issued
    Tuesday, May 24, 1988
    36 years ago
Information
Abstract
A displacement pump has a pump chamber connected with an inlet valve chamber and an outlet valve chamber. The chambers are arranged so that a cleaning tool has a direct cleaning path through the inlet valve chamber, its connection to the pump chamber, the connection of the outlet valve to the pump chamber and the outlet valve.
Description
Claims
  • 1. In a displacement pump including a displacement chamber, a plunger reciprocable therein, inlet and outlet ports to and from said chamber, a one-way gravity ball inlet valve and valve chamber and a one-way gravity ball outlet valve and valve chamber connecting to said inlet and outlet ports respectively, the improvement comprising:
  • a generally horizontal conduit connecting said inlet port and said inlet valve chamber,
  • a generally horizontal conduit connecting said outlet port to said outlet valve chamber,
  • said conduits and their connecting ports being located opposite each other,
  • said conduits being aligned,
  • a removable plug located in one of said valve chambers on the side thereof remote from said displacement chamber,
  • said plug being located in alignment with said aligned conduits, whereby when said plug is removed an aligned cleaning passage may be provided extending through the port defined by said port, across one valve chamber, through the corresponding aligned conduit, across the displacement chamber through the other aligned conduit, and across the other valve chamber,
  • said inlet valve and valve chamber, outlet valve and valve chamber and plunger and displacement chamber being designed so that the components thereof may be moved clear of said passage when said cleaning passage is used.
  • 2. In a displacement pump as claimed in claim 1 wherein both ends of said valves may be opened for cleaning.
  • 3. In a displacement pump having a displacement pump with a displacement chamber having inlet and outlet gravity ball valves and valve chambers, connected to the displacement chamber by generally horizontal inlet and outlet conduits, wherein the inlet and outlet conduits are aligned and arranged on opposite sides of the displacement chamber, and a plug is removably located in one of said valve chambers opposite and aligned with the corresponding aligned conduit, whereby a cleaning tool may be inserted through the opening to clean both conduits and the aligned portions of the valve chambers and the displacement chambers.
Parent Case Info

This invention relates to a displacement pump which is useful for pumping any substance with a liquid vehicle like water to thin solutions to thick slurries. However the invention advantages are more significant for pumps used with thick slurries. Displacement pumps, particularly those designed for thick slurries require cleaning to prevent the clogging of passages and the blockage of moving parts. Such clogging and blockage are more frequently required if the staff using the pump does not flush the pump after each use. However, even with proper cleaning procedures, such clogging and blockage will take place. It is an objective of the invention to provide a displacement pump having a displacement chamber and inlet and outlet valve chambers, where a conduit joins the inlet valve chamber to the displacement chamber and a conduit joins the outlet valve chamber to the displacement chamber. In accord with the invention, the conduits are aligned and one of the valve chambers is provided with a port, closed by a removable plug, located on the wall of one of the valve chambers remote from the displacement chamber and aligned with said conduits. Removal of the plug therefore allows a drill or other cleaning inplement to be inserted through the aligned conduits for cleaning both in a single stroke of the drill or cleaning tool. Means are provided for moving valve or displacement parts clear of such tool travel. The conduits and chambers are thus conveniently cleaned. It is an object of a preferred facet of the invention to provide, in addition to the arrangement of the previous paragraph, access to the valve chamber and the displacement chamber in a direction perpendicular to the tool path. Thus these chambers may be cleaned at the same time as the passage, and the entire pump is rendered easy to clean.

US Referenced Citations (6)
Number Name Date Kind
1850083 Noltein Mar 1932
1867585 Moore Jul 1932
2609756 Wright et al. Sep 1952
2733664 Saalfrank Feb 1956
3802807 Kilayko Apr 1974
4097202 Price Jun 1978