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Apparatus and method for controlled chemical blending

  • US 6,120,175 A
  • Filed: 07/14/1999
  • Issued: 09/19/2000
  • Est. Priority Date: 07/14/1999
  • Status: Expired due to Fees
First Claim
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1. A chemical blending apparatus comprising:

  • (a) more than one chemical blending vessel with tops and bottoms and with inlets at the tops;

    (b) a pair of automatic inlet valves connected to each chemical blending vessel, one automatic inlet valve with a large inlet orifice and one automatic inlet valve with a relatively much smaller inlet orifice;

    (c) at least two chemical batch tanks for holding chemicals to be blended, each chemical batch tank connected to said pair of automatic inlet valves;

    (d) a pump connected to said chemical batch tanks for high speed delivery of chemicals from said chemical batch tanks to said automatic inlet valves;

    (e) a weight cell means for measuring the weight of chemicals added to said chemical blending vessels, connected to said chemical blending vessel;

    (f) a controller means for controlling the transfer of chemicals and opening and closing said automatic inlet valves, connected to said weight cell means; and

    (g) a discharge line connected to the bottoms of said chemical blending vessels and to a receiving station, containing a static mixer and connected to a discharge line pump and a filter and sampling means so that a resultant blend of chemicals is mixed, filtered, and sampled after discharge from said chemical blending vessels and prior to delivery to said receiving station.

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