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Chemical injection assembly

  • US 4,210,175 A
  • Filed: 01/16/1978
  • Issued: 07/01/1980
  • Est. Priority Date: 03/22/1976
  • Status: Expired due to Term
First Claim
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1. A fluid injection assembly of the type primarily designed to add predetermined amounts of fluid comprising a liquid to a flowing stream of liquid, said fluid injection assembly comprising:

  • casing means;

    conduit means configured to define the path of travel of the liquid, said conduit means comprising a liquid inlet disposed in liquid-communicating relation to the interior of said casing means and further comprising liquid flow rate metering means operatively disposed along said conduit means, said liquid flow rate metering means comprising a transparent, tapered conduit section and a flow rate indicator movably disposed therein whereby displacement of said flow rate indicator within said conduit section is indicative of the quantity of liquid defining said flow stream;

    fluid supply means mounted on the interior of said casing means and at least partially surrounded by the liquid within said interior of said casing means;

    dispensing means mounted in fluid-communicating relation between said fluid supply means and the liquid flowing within said conduit means downstream of said liquid flow rate metering means, said dispensing means comprising adjustable valve means mounted in flow-regulating relation to fluid exiting said fluid supply means and fluid injection metering means comprising a transparent, tapered tube portion and a fluid injection indicator movably disposed therein operatively disposed in fluid-communicating relation between said adjustable valve means and said conduit means downstream of said liquid flow rate metering means, whereby displacement of said fluid injection indicator within said tube portion is indicative of the rate of fluid injection into said flowing stream; and

    chamber means connected to the outlet of said conduit means in receiving relation to said flowing stream and to the fluid from said fluid supply means, said chamber means being dimensioned and configured to provide mixing of fluid from said fluid supply means and liquid of said flowing stream.

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