Abstract:
An apparatus for preparing dialysate concentrate includes a vessel, a controllable valve for regulating water flow to the vessel, a first sensing device for detecting when the liquid has reached a lower level, a second sensing device for detecting when the liquid has reached an upper level, a controller selectively responsive to one of the sensing devices, and a positionable switch for selecting to which of the sensing devices the controller is responsive. The apparatus can be used in a method for preparing a dialysate concentrate by connecting a source of water to an inlet port, filling the vessel to the predetermined lower level by positioning the switch so that the controller is responsive to the first sensing device, opening the controllable valve, allowing the first sensing device to detect when the predetermined lower level has been reached and close the valve, adding a predetermined amount of powder and/or liquid to the vessel, agitating the contents of the vessel for a time sufficient to cause the added powder and/or liquid to dissolve into and/or mix with the water in the vessel to form a homogenous solution, filling the vessel to the upper level by positioning the switch so that the controller is responsive to the second sensing device, opening the valve, and allowing the second sensing device to detect when the upper level has been reached and close the valve.
Abstract:
An automatic dispensing method and apparatus for transporting separate concentrated chemicals to the site of use and then dispensing the concentrated chemicals into a storage container to create a final or intermediate composition. The automatic dispensing apparatus includes a computer program that calculates the appropriate formulation and then interfaces with a controller to cause the appropriate chemical concentrates and the appropriate volumes of those concentrates to be dispensed. A method of generating a desired formulation is also disclosed and claimed.
Abstract:
A binder system component metering apparatus for use in core sand mixing equipment comprising an elongate hollow vessel of substantially greater length than width and having upper and lower end portions, valves located in a lower end portion of the elongate vessel for introducing via hydrostatic pressure, liquid binder system components into the vessel so that as the vessel is filled the liquid presents an upper surface that rises vertically, and a sensor located in the upper end portion of the elongate vessel to continuously sense the position of the liquid surface at infinite locations along the length of elongate vessel whereby the upper surface rises with minimum turbulence.
Abstract:
In combination with a portable liquid container such as a bucket (20), a liquid-dispensing device (26) is disclosed. Device (26) automatically meters a desired quantity of a dilutable liquid concentrate into bucket (20) whenever bucket (20) is filled to a predetermined level with a suitable diluting liquid. Device (26) comprises a frame (28), a pump (40) mounted on frame (28), and a flexible-plastic pouch (56) containing the liquid concentrate and hung from frame (28). Frame (28) is carried atop a sidewall portion of bucket (20). Pump (40) includes a pump inlet (42), a pump outlet (44), and a pump chamber (46). Pump chamber (46) is in fluid communication with pump inlet (42) and outlet (44). Pouch (56) includes a valved outlet (96) so dimensioned relative to pump inlet (42) as to be removably snugly engaged with pump inlet (42) in a fluid-tight manner. Pump (40) further includes a piston or diaphragm (48) disposed within pump chamber (46) for transferring liquid concentrate from pump inlet (42) via pump chamber (46) to pump outlet (44). Device (26) further includes a float mechanism (66) disposed into bucket (20) and pivotally operatively connected to piston (48) for causing piston (48) to be reciprocatingly movable in piston chamber (46) between first and second positions for purposes of defining a first cycle which causes liquid to be drawn into pump chamber (46) via pump inlet (42) and for purposes of defining a second cycle which causes liquid to be discharged from pump chamber (46) via pump outlet (44). Device (26) still further includes a spring mechanism (142), on frame (28), for biasing float mechanism (66) in the first position.
Abstract:
Method and apparatus for preparing a mixed fluid of accurately portioned components for hemodialysis comprises the use of a closed receptacle of fixed volume. Two or more components for the fluid are introduced into a chamber in the closed receptacle to fill it and the resultant fluid of the portioned and mixed components is delivered from the chamber. One or more of the components is introduced into the chamber in predetermined amounts, the sum of which is insufficient to fill the whole volume of the chamber, before or during which the other component is introduced into the chamber and the other component is introduced into the chamber in an amount sufficient to fill the remaining volume of the chamber. The method and apparatus are suitable for preparing dialysate solutions for the use in hemodialysis.
Abstract:
An apparatus for aerating liquids, particularly for the preparation of carbonated beverages, has a carbonating chamber with electrically actuated valves controlling the flow of liquid and gas to and from the chamber, and a programmed electronic timer control device controls said valves enabling liquid to be carbonated and dispensed at the touch of a button.
Abstract:
Apparatus for discontinuously diluting a liquid in another liquid, to a predetermined level of concentration, comprising a metering container provided with a means for automatically limiting the filling thereof to a predetermined level, a tank for liquid to be diluted, whose lower part is connected to the upper part of the metering container by a conduit, a dilution vessel whose lower part is connected to the lower part of the metering container, a means for permitting transfer of the diluted liquid from the lower part of the dilution vessel to an assembly for using the diluted liquid, a conduit for passing the diluting liquid into the dilution vessel, a valve which is interposed on the conduit carrying the diluting liquid into the dilution vessel, an aspirator means which is disposed on the conduit carrying the diluting liquid to the dilution vessel and positioned downstream of the valve.
Abstract:
An apparatus is provided for mixing metered quantities of a plurality of liquids in accurately constant proportions according to a continuous process. The apparatus comprises one storage tank for each of the liquids which must be mixed, each storage tank being provided with an inlet conduit and an outlet conduit, the output of the inlet conduit and the input of the outlet conduit being axially aligned one opposite the other within the corresponding tank, each of said outlet conduits having a liquid pump and a metering orifice one of which is fixed and the other or others being micrometrically adjustable, all said liquid pumps being driven by a single and the same motive power source, each storage tank having a float therein capable of controlling an inlet valve inserted in the corresponding inlet conduit. A more sophisticated embodiment includes an additional tank also having inlet and outlet conduits whose respective output and input are axially aligned one opposite the other, the output of said metering orifices being connected to a mixer section the output of which is connected to said inlet conduit of said additional tank, the outlet conduit of the latter being connected to the intake of an additional liquid pump the exhaust of which includes a final product discharge valve controllable by an hydraulic control valve actuatable by a float provided within said additional tank thus controlling the output of final product in accordance with the liquid level in the additional tank.
Abstract:
A liquid proportioning system includes two groups of positive metering tanks, each group consisting of at least two tanks each containing a supply of liquid to be blended and including outlet control device for selectively regulating the volume of liquid leaving the tank per unit of time. The liquids from each tank are fed together through a single conduit to a mixer which continuously blends the liquid components as they are flowing, and the blended liquids are fed to a reservoir tank, from which they are fed to a point of use in accordance with the variable requirements of the latter. One group of positive metering tanks feeds the liquid components to the mixer in exact proportions until these tanks are depleted, at which time the flow from these tanks is shut off automatically and the second group of tanks begins to feed the portioned liquid components to the mixer, while the first group of tanks are refilled. When the requirements of the point of use are decreased, sensors slow down the feeding of the liquid to the reservoir tank by increasing the time interval between the emptying of one group of metering tanks and the commencement of feeding from the other group of tanks.
Abstract:
A method and apparatus for the automatic, continuous supply on demand, of solutions of precise quantities of liquid and dry materials, for example, particularly liquid sugar from initial constituents of dry sugar and water, in which a storage supply of solution, such as liquid sugar is available for withdrawal and use, such supply being adapted to be maintained from a mixing station with the bulk materials being supplied in predetermined quantities from a supply station and converted, for example, into liquid sugar by the application of heat, the supply being suitably monitored and replenished and the materials measured and mixed on demand, automatically as required. Other materials may be simultaneously included to form blends, etc.