US 4,432,470 A · Multicomponent liquid mixing and dispensing assembly

Abstract

A portable apparatus for mixing and dispensing interactive liquid components (such as epoxy resins and catalysts) which utilizes reciprocable positive displacement pumps which are mechanically connected for simultaneous pumping and filling movement, there being a common single acting selectively adjustable drive for effecting only output pumping movement at preselected output pressure, and the pressure exerted by the liquid components themselves are required to hydraulically effect the filling movement, with the amount of hydraulic filling pressure which can be exerted by one of the component liquids being specifically regulated to be less than that required to effect filling movement. This insures maintenance of precise ratio mixing since the filling movement requires exertion of hydraulic filling pressure by both of the component liquids thus assuring precision ratio pump filling at all parts of the filling cycle independent of varying temperature dependent viscosity of the liquids. The apparatus also features flow control operating on one of the pump output lines which is independent of pressure control of the drive means to provide selectively controllable flow and pressure at the dispensing head. The flow control in one output line controls flow through the other output line by mechanical connection of the pumps which insures output simultaneity of both flow amounts and pressures. The apparatus is for single operator use, wheeled, vertically elongated, tiltable and fits through a standard twenty-two inch diameter manhole. The moving parts are protected from dirty environments by placing same within a separate housing chamber.

Claims35

Dependent claims

An apparatus for supplying A and B liquids from A and B sources, respectively, to a mixing head or the like, said apparatus having A and B pumps each having a pump member movable from a first toward a second position, means rigidly mechanically connecting the A and B pump members for simultaneous movement toward said first and second positions, drive means operable in one direction to move said pump members from their first toward their second positions, and A and B conduit means connecting said A and B sources to said A and B pumps, respectively, the improvement which comprises A and B valve means in said A and B conduit means, respectively, said valve means each having outlet means for connection to a mixing head or the like and each having a first position permitting flow of liquid from the respective pump through its outlet means on movement of said pump members toward their second positions, said A and B valve means each having a second position providing communication between said A and B sources and said A and B pumps, respectively, and means to cause said A and B liquids to hydraulically bias said pump members operating through said means rigidly mechanically connecting the A and B pump members toward their first positions when said A and B valve means are in their second positions.

A movable, field use chemically interactive resin and catalyst liquid mixing and dispensing assembly for hose connected association solely with an external air pressure supply source means, comprising in combination:

(a) frame means having a vertical axis, a horizontal depth axis and a horizontal width axis, said frame means having an upper and a lower end along said vertical axis,
(b) wheel means adjacent said lower end,
(c) liquid tank means for holding and supplying A and B liquids mounted on said frame means,
(d) air pressure driving means connectable to said air pressure supply source and mounted on said frame means,
(e) pump means driven by said air pressure driving means and operable to receive and pump A and B liquids from said tank means in precise ratio relationship,
(f) detachable elongated flexible liquid hose means having first and second ends, said first end being detachably connected to said pump means to receive A and B liquids pumped thereby,
(g) nozzle means for mixing, dispensing and control of the A and B liquids, said nozzle means being quick detachably connected to said second end of said elongated flexible liquid hose means, said nozzle means being operable to separately receive, mix and dispense the mixed A and B liquids,
(h) air pressure control means operatively associated with said nozzle means,
(i) air supply hose means connectable to said air pressure supply, said nozzle means, said liquid tank means, and said air pressure driving means for actuating control by said air pressure control means,
whereby said assembly may be moved on said wheel means in the field for delivery of chemically interactive resin and catalyst liquid in mixed relation at said nozzle means and may be selectively controlled by an operator actuating said air pressure control means near said nozzle means.

7 more elements

A liquid mixing and dispensing assembly for easy field portability and for connectable association solely with an external air pressure supply source means comprising in combination:

(a) elongated rigid frame means having an upper end and a lower end with a vertical axis dimension exceeding all horizontal axis dimensions,
(b) wheel means adjacent said lower end of said frame means,
(c) A and B pressure tank liquid holding means for holding and supplying A and B liquids, said A and B pressure tank liquid holding means being removeably securely mounted to the lower end of said frame means, said A pressure tank liquid holding means having an A material outlet means and an A air pressure inlet means, said B pressure tank liquid holding means having a B material outlet means and a B air pressure inlet means,
(d) handle means adjacent to and attached to the upper end of said frame means,
(e) air pressure pump driving means mounted on said frame means,
(f) A and B pump means on said frame means respectively having A and B inlet means and A and B outlet means and driven by said air pressure pump driving means, each of said A and B inlet means of said A and B pump means being respectively connected to said A and B liquid outlet means of said A and B pressure tank liquid holding means, said A and B pump means being mechanically linked to move in tandem and operable to receive and pump A and B liquids to respectively precisely control in ratio the amount of A and B liquids received from said A and B pressure tank liquid holding means and dispense the A and B liquids through said A and B outlet means of said A and B pump means,
(g) detachable elongated flexible A and B liquid hose means each having first and second ends, said first end of said A liquid hose means and said B liquid hose means being respectively quick detachably connected to said A and B pump outlet means,
(h) nozzle means having an inlet means and spaced outlet means for mixing and outlet dispensing of the mixed A and B liquids, said nozzle means having means associated with said nozzle inlet means for quick detachable attachment of said second end of each of said A and B elongated flexible liquid hose means, said nozzle means being operable to receive, mix and dispense the mixed A and B liquids received from each of said A and B outlet means of said pump means,
(i) selectively actuable air pressure control means detachably associated with said nozzle means,
(j) air supply hose means controlled by said air pressure control means, and connectable to an air pressure supply, said nozzle means, said A and B tank means, and said driving means for actuating control by said air pressure control means,
whereby said assembly may be easily moved to desired location on said wheel means and delivery of A and B liquids in mixed relation at said nozzle means may be selectively controlled by an operator actuating said air pressure control means when connected to a source of air pressure.

8 more elements

A liquid relatively viscous epoxy resin and liquid catalyst mixing and dispensing assembly for field repair of concrete installations and for association solely with an external air pressure supply source means comprising in combination:

(a) elongated rigid housing means having an internal chamber, an upper end, a lower end and external shelf means adjacent said lower end,
(b) wheel means adjacent said lower end of said housing means and below said external shelf means,
(c) liquid epoxy resin pressure tank holding means and liquid catalyst pressure tank holding means for holding and supplying said epoxy and catalyst liquids, said epoxy and catalyst liquid tank means being removably securely externally mounted to the lower end of said housing on said external shelf means, said epoxy liquid pressure tank means having an epoxy liquid outlet means and air pressure inlet means for receiving air pressure, said catalyst liquid pressure tank means having a catalyst liquid outlet means, air pressure inlet means and air pressure control means for assuring tank pressure in said liquid catalyst tank means at a predetermined maximum level,
(d) handle means adjacent to and attached to the upper end of said housing means,
(e) indicia panel means associated with said top of said housing means and adjacent said handle means for indicating the pressure in said liquid epoxy and catalyst tank holding means,
(f) air pressure driving means mounted on said housing means in said internal chamber,
(g) epoxy liquid positive displacement reciprocating pump means and catalyst liquid positive displacement reciprocating pump means mechanically linked to each other and each having a filled position and a spaced discharged position, biasing means for said pump means providing a predetermined force level to be overcome in moving each of said pump means from said discharged toward said filled position, said epoxy liquid pump means having epoxy liquid inlet means and outlet means, said catalyst liquid pump means having catalyst liquid inlet means and outlet means mounted in said internal chamber of said housing means, each said epoxy liquid and catalyst liquid pump means being driven by said air pressure driving means, each of said epoxy and catalyst liquid pump means being respectively connected to and operable to receive and pump liquid from said epoxy and catalyst liquid outlet means of said pressurized epoxy and catalyst liquid tank means, the said force level of said pump means being greater than the force provided by the air pressure in said catalyst liquid tank means, said epoxy liquid and catalyst liquid pump means being operable to precisely control in predetermined adjustable ratio the amount of material received from said epoxy and catalyst liquid tank means and positively dispense the epoxy liquid and catalyst liquid,
(h) epoxy and catalyst port means externally mounted on said housing means,
(i) connection means respectively connecting said epoxy and catalyst port means to said epoxy liquid and catalyst liquid pump means outlet means,
(j) detachable elongated flexible epoxy and catalyst hose means each having first and second ends, said first end of said epoxy hose means and said catalyst hose means being respectively detachably connected to said epoxy and catalyst port means,
(k) nozzle means for receiving, mixing, dispensing and control of dispensing of the mixed epoxy and catalyst liquids, said nozzle means having means for quick detachable attachment of said second end of each of said flexible epoxy and catalyst hose means,
(l) air pressure control means associated with said nozzle means,
(m) air supply hose means connectable to the external air pressure supply, said nozzle means, said epoxy and catalyst liquid tank means, and said driving means for said epoxy and catalyst pump means, said air supply hose means being under actuating control by said air pressure control means associated with said nozzle means,
whereby delivery of epoxy and catalyst in precise mixed relation at said nozzle means may be selectively controlled by an operator actuating said air pressure control means, the controlled ratio of epoxy liquid to catalyst liquid being assured because the mechanical linkage of said epoxy liquid and catalyst liquid pump means requires the relatively viscous epoxy liquid in the epoxy liquid pump means to receive the pressure of the epoxy resin liquid to move both the epoxy liquid and catalyst liquid pump means from the discharged positions toward the filled positions independent of changes of viscosity in the epoxy liquid caused by changes in ambient temperatures encountered in field use of the assembly.

11 more elements

An apparatus for supplying A and B liquids from A and B sources, respectively, to a mixing head or the like, said apparatus having A and B positive displacement pumps each having a pump member movable from a first toward a second position, mechanical means connecting the A and B pump members for simultaneous movement toward said first and second positions, mixing head means for mixing said A and B liquids, manually adjustable air pressure drive means operable in one direction to move said pump members from their first toward their second positions and operable to impart an adjustable preselected pressure on the A and B liquids pumped by said pump members, and A and B conduit means connecting said A and B sources to said A and B pumps, respectively and from said A and B pumps to said mixing head means, the improvement which comprises A and B valve means in said A and B conduit means, respectively, said valve means each having outlet means for connection to said mixing head means through said conduit means, and each having a first position permitting flow of liquid from the respective pump through its outlet means on movement of said pump members toward their second positions, said A and B valve means each having a second position providing communication between said A and B sources and said A and B pumps, respectively, and adjustable flow control means in said B conduit means intermediate said outlet means of said B valve means and said mixing head means, said adjustable flow control means being operable to adjustably control the rate of flow of said B liquid through said B conduit means over a range of low to high rates and thereby, through said mechanical means connecting the A and B pumps, the rate of flow of A liquid through said A conduit means whereby said apparatus may pump A and B liquids from said A and B sources to said mixing head means at adjustably selected pressures and rates of flow.

Dependencies are inferred from the claim text.

Multicomponent liquid mixing and dispensing assembly

Life of this patent

Multicomponent liquid mixing and dispensing assembly

Life of this patent

Abstract

Claims35