Patent ID: 6221321
Filing Date: 2001-04-24
Classification: B01F,C02F

Abstract:
A chemical feeder for dispensing a solution of an additive chemical into a fluid, comprising:a hollow body including an open upper end and an interior having a bottom, said hollow body capable of accommodating the additive chemical therein;a substantially hollow head attached to said upper end of said body, said head including an interior communicating with said interior of said bottom;a flow passage extending horizontally through said head, said flow passage including a frusto-conical inlet section converging to a cylindrical center section, and a frusto-conical outlet section diverging from said center section;a bypass port communicating with said flow passage at one end and with said interior of said hollow head at the other end, with an adjustable valve disposed between said one end and said other end to control the volume of fluid flowing through said bypass port;a feeder opening in a lower portion of said center section through which fluid from said hollow body can enter said flow passage; anda feeder tube attached to said flow passage in communication with said feeder opening, said feeder tube extending downwardly toward said bottom of said body from said feeder opening, said flow passage acting as a Venturi to create a low pressure in the fluid flowing therethrough proximate said feeder opening, said low pressure drawing the solution of the additive chemical contained within said hollow body upwards through said feeder tube against the force of gravity to merge into the fluid flowing through said flow passage and be carried out said outlet section.