Chemical dispensing device
First Claim
1. A device for dispensing chemical into a pipeline, the device comprising:
- a conduit adapted to be disposed in-line with said pipeline, said conduit defining a liquid flow path and having an upstream end, a downstream end, and a conduit opening disposed between said upstream and downstream ends;
a pressure-tight enclosure having a bottom end and having an enclosure opening disposed in said bottom end for fluid communication with said conduit opening, said enclosure cooperating with said conduit to permit liquid to enter said enclosure through said enclosure opening when the pressure in said conduit is greater than the pressure in said enclosure, and for discharging liquid from said enclosure when the pressure in said enclosure is greater than the pressure in said conduit;
means for connecting said enclosure opening to said conduit opening for fluid communication between said openings;
means for introducing chemical into said enclosure;
elongated tube means having a bottom end, a top end, and an aperture disposed therein between said bottom and top ends proximate said bottom end, said bottom end having a portion disposed in said enclosure opening, said tube means for directing a mixture of liquid and chemical exiting said enclosure from said aperture towards said top end of said tube means and then through said enclosure opening.
0 Assignments
0 Petitions
Accused Products
Abstract
A device for dispensing a chemical solution into a pipeline transporting a liquid under pressure irrespective of whether the liquid pressure varies between a maximum and a minimum or is subsantially constant. The volume of solution dispensed is varied at times when the liquid pressure is varying by selection of an aperture from a plurality of apertures at varying axial positions, for placing the interior of the pipeline in communication with the interior of the enclosure above the solution level, at times when the level drops axially to the selected apertures; or, at times when the liquid pressure is substantially constant, by adjustment of the amount of liquid permitted to enter the device.
78 Citations
18 Claims
-
1. A device for dispensing chemical into a pipeline, the device comprising:
-
a conduit adapted to be disposed in-line with said pipeline, said conduit defining a liquid flow path and having an upstream end, a downstream end, and a conduit opening disposed between said upstream and downstream ends; a pressure-tight enclosure having a bottom end and having an enclosure opening disposed in said bottom end for fluid communication with said conduit opening, said enclosure cooperating with said conduit to permit liquid to enter said enclosure through said enclosure opening when the pressure in said conduit is greater than the pressure in said enclosure, and for discharging liquid from said enclosure when the pressure in said enclosure is greater than the pressure in said conduit; means for connecting said enclosure opening to said conduit opening for fluid communication between said openings; means for introducing chemical into said enclosure; elongated tube means having a bottom end, a top end, and an aperture disposed therein between said bottom and top ends proximate said bottom end, said bottom end having a portion disposed in said enclosure opening, said tube means for directing a mixture of liquid and chemical exiting said enclosure from said aperture towards said top end of said tube means and then through said enclosure opening. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A device for dispensing chemical into a pipeline transporting liquid under pressure, the device comprising:
-
a conduit disposed in-line with said pipeline, said conduit defining a liquid flow path and having an upstream end, a downstream end, a first conduit opening disposed between said upstream and downstream ends, and a second conduit opening disposed between said first conduit opening and said upstream end, said conduit also including venturi effect means for causing the fluid pressure proximate said first conduit opening to be lower than the liquid pressure proximate said second conduit opening; a pressure-tight enclosure having a bottom end and having an enclosure opening disposed in said bottom end for fluid communication with said first conduit opening, said enclosure cooperating with said conduit to permit liquid to enter said enclosure through said enclosure opening when the pressure in said conduit is greater than the pressure in said enclosure, and for discharging liquid from said enclosure when the pressure in said enclosure is greater than the pressure in said conduit; means for connecting said first enclosure opening to said first conduit opening for liquid flow from said enclosure to said conduit; means for connecting said second enclosure opening to said second conduit opening for liquid flow from said conduit to said enclosure; means for introducing chemical into said enclosure; and elongated tube means extending from said first enclosure opening toward said top end of said enclosure, and having an aperture therein proximate said bottom end of said enclosure, said elongated tube means for directing a mixture of liquid and chemical exiting said enclosure through said aperture towards said top end and then back toward said bottom end, wherein liquid from said conduit enters said enclosure through said second enclosure opening and exits said enclosure through said first enclosure opening in response to the venturi effect of said venturi effect means. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A device for dispensing chemical into a pipeline transporting liquid under variable pressure, the device comprising:
-
a conduit disposed in-line with said pipeline, the conduit defining a fluid flow path and having an upstream end, a downstream end, and a conduit opening disposed between said upstream and downstream ends; a pressure-tight enclosure having a bottom end and having an enclosure opening disposed in said bottom end for fluid communication with said conduit opening, said enclosure cooperating with said conduit to permit liquid to enter said enclosure through said enclosure opening when the pressure in said conduit is greater than the pressure in said enclosure and for discharging liquid from said enclosure when the pressure in said enclosure is greater than the pressure in said conduit; means connecting said conduit opening and said enclosure opening for fluid flow between said conduit and said enclosure; means for introducing chemical into said enclosure; and elongated tube means extending from said enclosure opening towards said top end of said enclosure and having an aperture disposed therein proximate the bottom end of said enclosure, said elongated tube means for directing a mixture of chemical and liquid exiting said enclosure through said aperture towards said top end and then back toward said bottom end to mix chemical in said enclosure with said liquid exiting into said conduit through said enclosure opening, said liquid alternately entering and exiting said enclosure through said opening in response to changes in pressure in said conduit. - View Dependent Claims (16, 17, 18)
-
Specification