Apparatus and methods for mixing liquids and flowable treating agents
OwnerRichard Von Berginventor
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for mixing a liquid and a flowable treating agent wherein liquid from a body thereof is pumped through a conduit submerged in the body of liquid and having a constricting nozzle therein which produces low pressure zone downstream of the nozzle. A draft tube communicates with the conduit in the vicinity of the low pressure zone and directs the flowable treating agent into the conduit by suction for mixing with the liquid. The nozzle outlet has a plurality of radially spaced slots separated by solid land portions which together interact with the fluid discharged from the nozzle to produce multiple, axially spaced venae contractae in the fluid downstream of the nozzle to effect mixing of the liquid and treating agent.
Claims21
Apparatus for mixing a fluid and a flowable treating agent comprising:
- a fluid conduit;
- propulsion means for generating a flow of the fluid through said conduit;
- a nozzle in said conduit having an inlet and an outlet and a side wall converging in the direction of flow of said fluid to produce a low pressure fluid zone downstream of said nozzle outlet;
- and
- treating agent inlet means communicating with said conduit at said low pressure zone of said conduit for enabling a flowable treating agent to be drawn by suction into said conduit for mixing with the fluid in said conduit downstream from said nozzle outlet,
- said outlet of said nozzle having a plurality of circumferentially spaced openings in said side wall for producing multiple, axially spaced venae contractae downstream of said nozzle for mixing said fluid and said treating agent in said conduit.
A method of treating a body of liquid with a flowable treating agent comprising:
- establishing a flow of liquid from said body of liquid axially through a longitudinally extending conduit submerged in said body of liquid;
- passing the liquid through axially spaced outlets of a constricting nozzle within the conduit to produce axially spaced venae contractae within the conduit downstream of the nozzle;
- and
- introducing the flowable treating agent into the conduit in the vicinity of the venae contractae to effect mixing of the treating agent with the liquid.
A nozzle for use in treating water flowing in a stream through a conduit, said nozzle comprising a wall forming a frusto-conical body having an inlet at its larger end and an outlet at its smaller end, said wall having a plurality of slots therein extending from said smaller end toward but terminating short of said larger end, said slots being circumferentially spaced from and substantially parallel to one another, said slots terminating between the smaller and larger ends of said body and defining openings through which liquid may escape from said body upstream from said outlet and form a first vena contracta in said conduit downstream of said nozzle, those portions of said wall between adjacent slots terminating at said larger end in free tips past which liquid from said nozzle may flow from said body and form a second vena contracta in said conduit downstream from said first vena contracta.
A method of treating a body of liquid comprising flowing liquid from said body axially through a longitudinally extending conduit;
- establishing a low pressure zone in said conduit;
- introducing a treating agent into said conduit at said low pressure zone;
- establishing multiple, axially spaced venae contractae downstream of the introduction of said treating agent into said conduit to mix said treating agent with liquid in said conduit;
- and returning the mixed liquid and treating agent to said body of liquid.
Dependencies are inferred from the claim text.