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Feeder device and method for adding solid material to a liquid of variable flow rate

  • US 4,759,907 A
  • Filed: 10/31/1986
  • Issued: 07/26/1988
  • Est. Priority Date: 10/31/1986
  • Status: Expired due to Fees
First Claim
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1. A feeder device for controlled addition of a treating agent to a flowing liquid of variable flow rate, wherein the device is adapted for the outflow of the liquid from the feeder device by gravity, the feeder comprising:

  • a housing element having a longitudinal axis for temporarily confining a flowing liquid;

    a liquid inlet means and a liquid outlet means in said housing element;

    a dissolution chamber within said housing element between said inlet means and outlet means, said dissolution chamber having an elevated bottom and comprising holding means for solid treating agent;

    an entrance zone having a bottom and being located between said inlet means and said dissolution chamber;

    raised surface means rising from said entrance zone to said dissolution chamber and providing an inlet flow baffle, said raised surface means extending from said entrance zone to said dissolution chamber elevated bottom;

    at least one proportional weir between said inlet means and said outlet means including a proportional weir located between said dissolution chamber and said outlet means and being designed such that the amount of liquid present in the dissolution chamber in proportional to the flow rate of flowing liquid, thereby contacting with, and dissolving in the liquid an amount of treating agent proportional to its flow rate;

    and with the weir being consturcted so as to be adjustable or exchangeable to provide for a desired concentration of treating agent in the liquid leaving said feeder device.

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