Dilution device for dispensing fluid
A dilution device may include a first component and a second component. The first component may define a groove including an inlet portion and an outlet portion. The second component may define an inlet in fluid communication with the inlet portion of the first component and an outlet in fluid communication with the outlet portion of the first component. Relative rotation between the first component and the second component may cause relative movement between the outlet and the outlet portion that changes the effective length of the groove fluidly coupling the inlet and the outlet of the second component. The cross-sectional area of the groove may vary along a length of the groove to provide different flow characteristics depending on the effective length of the groove.
1 . A dilution device, comprising:
a metering disc having a cross-sectional thickness, the metering disc defining a metering groove with an inlet portion and a plurality of discrete outlet portion segments, the metering groove formed in a surface of the metering disc and having a depth that is less than the cross-sectional thickness of the metering disc; and
a housing comprising a first housing component coupled with a second housing component,
wherein the first and second housing components define an interior of the housing enclosing the metering disc, the second housing component defining an inlet in fluid communication with the inlet portion of the metering groove and an outlet in fluid communication with the plurality of discrete outlet portion segments of the metering groove, the inlet and the outlet each extending through the second housing component from the interior to an exterior of the housing, the inlet configured for receiving a chemical and the outlet configured for coupling with an eductor defining a motive fluid passage,
wherein the metering groove defines a tortuous portion fluidly coupling the inlet portion and the plurality of outlet portion segments, wherein the tortuous portion extends in straight lines that form a plurality of V-shapes that intersect a central area of each of the plurality of discrete outlet portion segments,
wherein during a relative rotation between the metering disc and the first or second housing component, the inlet and the inlet portion are non-movably arranged relative to each other, and wherein such relative rotation causes relative movement between the outlet and the plurality of discrete outlet portion segments to discrete rotational positions that change an effective length of the tortuous portion of the metering groove fluidly coupling the inlet and the outlet, and
wherein a cross-sectional area of the metering groove varies along a length of the metering groove to provide different a flow restriction depending on the effective length of the tortuous portion of the metering groove.
2 . The dilution device of claim 1 , wherein the first housing component comprises a rounded plate defining a central aperture.
3 . The dilution device of claim 1 , wherein the inlet comprises an inlet nozzle and the outlet comprises an outlet nozzle.
4 . The dilution device of claim 3 , wherein the inlet nozzle and the outlet nozzle protrude radially outward from an outer surface of the second housing component.
5 . The dilution device of claim 3 , wherein the outlet nozzle defines a barbed portion configured to couple with an end portion of a flexible hose.
6 . The dilution device of claim 1 , wherein the inlet comprises a filter element configured to restrict a passage of chemical particulates through the metering groove.
7 . The dilution device of claim 1 , wherein the metering disc sealingly engages an inner surface of the second housing component to maintain a defined fluid passage between the inlet and the outlet.
8 . The dilution device of claim 1 , further comprising one or more tabs incorporated into the first housing component and configured to cause the relative rotation between the metering disc and the second housing component responsive to user manipulation.
9 . The dilution device of claim 8 , wherein the one or more tabs are configured as interlocking tabs coupled with the first housing component, wherein the metering disc comprises one or more slots complementary to the interlocking tabs, and wherein each of the one or more slots is configured to be received by one of the interlocking tabs.
10 . The dilution device of claim 1 , further comprising a biasing element configured to bias the metering disc against an internal surface of the housing.
11 . The dilution device of claim 1 , wherein the plurality of discrete outlet portion segments are radially distributed around the surface of the metering disc proximate an outer edge thereof, the discrete outlet portion segments defining incremental changes in the effective length of the metering groove.
12 . The dilution device of claim 11 , wherein the plurality of discrete outlet portion segments are evenly spaced with respect to each other.
13 . The dilution device of claim 11 , wherein, relative to the plurality of discrete outlet portion segments being arranged proximate the outer edge of the metering disc, the plurality of V-shapes of the metering groove are arranged proximate an inner portion of the metering disc.
14 . A dilution system, comprising:
a dilution device in fluid communication with a concentrated chemical, the dilution device comprising:
a metering disc having a cross-sectional thickness, the metering disc defining a metering groove with an inlet portion and a plurality of discrete outlet portion segments, the metering groove formed in a surface of the metering disc and having a depth that is less than the cross-sectional thickness of the metering disc; and
a housing comprising a first housing component coupled with a second housing component,
wherein the first and second housing components define an interior of the housing enclosing the metering disc, the second housing component defining an inlet in fluid communication with the inlet portion of the metering groove and an outlet in fluid communication with the plurality of discrete outlet portion segments of the metering groove, the inlet and the outlet each extending through the second housing component from the interior to an exterior of the housing, the inlet configured for receiving the concentrated chemical,
wherein the metering groove defines a tortuous portion fluidly coupling the inlet portion and the plurality of outlet portion segments, wherein the tortuous portion extends in straight lines that form a plurality of V-shapes that intersect a central area of each of the plurality of discrete outlet portion segments,
wherein during a relative rotation between the metering disc and the first or second housing component, the inlet and the inlet portion are non-movably arranged relative to each other, and wherein such relative rotation causes relative movement between the outlet and the plurality of discrete outlet portion segments to discrete rotational positions that change an effective length of the tortuous portion of the metering groove fluidly coupling the inlet and the outlet; and
an eductor in fluid communication with the outlet and a motive fluid,
wherein the motive fluid flows through the eductor and creates a suction force that draws the concentrated chemical through the outlet and into a flow path of the motive fluid to mix the concentrated chemical with the motive fluid, and
wherein a cross-sectional area of the metering groove varies along a length of the metering groove to provide a different flow restriction depending on the effective length of the tortuous portion of the metering groove.
15 . The dilution system of claim 14 , wherein at least one of the first and second housing component comprises an inlet nozzle and an outlet nozzle each in fluid communication with the metering groove defined by the metering disc.
16 . The dilution system of claim 15 , wherein the dilution device is connected to the eductor via a flexible hose coupled at a first end to the outlet nozzle and at a second, opposite end to a chemical inlet defined by the eductor.
17 . The dilution system of claim 15 , wherein the inlet nozzle receives the concentrated chemical via a flexible hose, the flexible hose coupled with a concentrated chemical container.