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Apparatus for making foamed cleaning solutions and method of operation

  • US 4,133,773 A
  • Filed: 07/28/1977
  • Issued: 01/09/1979
  • Est. Priority Date: 07/28/1977
  • Status: Expired due to Term
First Claim
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1. An apparatus for making a foamed fluid useful for cleaning the interior surfaces of a vessel, which comprises:

  • a first conduit which defines a foam chamber;

    a second conduit which communicates with the foam chamber, and which defines an inlet adapted for carrying a liquid concentrate into the foam chamber;

    a third conduit which communicates with the foam chamber, and which defines an inlet adapted for carrying a diluent liquid into the foam chamber, the diluent liquid thereby mixing with the liquid concentrate to form a liquid solution in the foam chamber;

    a first flow regulator means installed in the second conduit, and adapted for regulating the flow of the liquid concentrate into the foam chamber;

    a second flow regulator means installed in the third conduit, and adapted for regulating the flow of the diluent liquid into the foam chamber;

    a fourth conduit having a gas disperser section connected into one end, the fourth conduit being in communication with the foam chamber, the gas disperser section being positioned inside the foam chamber, and the fourth conduit defining an inlet adapted for carrying a gas into the foam chamber, the gas thereby being dispersed in the liquid solution to form a foamed fluid;

    a third flow regulator installed in the fourth conduit, and adapted for regulating the flow of the gas into the foam chamber;

    a fifth conduit which connects into the foam chamber, and which has at least one open end, the said open end being spaced from the foam chamber and adapted for connection into a discharge line which carries the foamed fluid to a vessel to be cleaned; and

    a mixing device which is positioned in the fifth conduit and is adapted for final mixing of the foamed fluid.

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