A liquid ejection device for a vehicle washing system includes a reservoir volume, a first supply line coupled upstream to the reservoir for supplying a first liquid with a first supply rate and a second supply line coupled upstream to the reservoir for supplying a second liquid with a second supply rate. The device further comprises a removal line coupled downstream to the reservoir with a blocking device for blocking liquid flow through the removal line, and a detection unit for detecting liquid volume in the reservoir and a mixing ratio of the liquids introduced into the reservoir; and a removal device for ejecting the liquid found in the reservoir through an ejection element coupled to the removal line. In addition, the device comprises a control unit which is coupled to the detection unit and the removal device and is set up to start an ejection process by the removal device upon reaching a predetermined liquid volume and a predetermined mixing ratio.

A method, apparatus, and system for mixing a compounded material. A first selected amount of a base part for the compounded material and a second selected amount of an activator part for the compounded material to form a total amount of the compounded material is determined. The first selected amount of the base part is pumped by a pump system from a set of base part sources connected to the pump system into a container. The second selected amount of the activator part is pumped by the pump system from a set of activator part sources connected to the pump system into a container. The base part and the activator part in the container are mixed by a mixing system for a predetermined amount of time that is sufficient to activate the compounded material for use.

A weight-volume mixing color matching method, reclamation mechanism and automatic color mixer for automobile refinishing paintings are discussed. The method comprises (1) finding out an automobile information ID card printed with a color number on an automobile body to be refinished, finding out a color code of the automobile body or getting a close color card code through comparison, and finding out a weight formula of the refinishing paints to be used through a reader or a computer color-matching system; or using a spectrophotometer to detect coatings of the automobile body to be refinished at a position where a surface of the coatings is complete, and outputting a weight formula of the refinishing paints after calculation; and (2) converting the weight formula of the refinishing paints into a corresponding volume formula of the refinishing paints according to a measured specific gravity of a color masterbatch.

The present invention concerns a method of mixing aqueous solutions, an apparatus for carrying out said method and the use of dosing devices with integrated dosing monitoring and stroke length control in an installation for mixing container aqueous solutions.

A method, apparatus, and system for mixing a compounded material. A first selected amount of a base part for the compounded material and a second selected amount of an activator part for the compounded material to form a total amount of the compounded material is determined. The first selected amount of the base part is pumped by a pump system from a set of base part sources connected to the pump system into a container. The second selected amount of the activator part is pumped by the pump system from a set of activator part sources connected to the pump system into a container. The base part and the activator part in the container are mixed by a mixing system for a predetermined amount of time that is sufficient to activate the compounded material for use.

A material dispensing system can comprise a first and second supply container housing a first and second material, respectively, comprising a first and second fluid, respectively; a first and second metering cylinder fluidly connected to the first and second supply container, respectively, the second metering cylinder configured to move from a first to a second stroke position in unison with the first metering cylinder; a dispensing head configured to receive a first and second liquid of the first and second fluids, respectively; a first recycling valve positioned between the first metering cylinder and the dispensing head; and a second recycling valve positioned between the second metering cylinder and the dispensing head, the first and second recirculating valves configured to draw a portion of the first and second fluids back into the first and second supply containers, respectively, in an open position.

The invention relates generally to a mixing system for mixing a dry material with a liquid. The mixing system includes a supply of dry material and a supply of liquid. An infinitely variable metering device meters the dry material into the liquid. A sensor senses the ratio of dry material to liquid. The sensor is operatively connected to the metering device to control the metering device to obtain a desired ratio of dry material to liquid. The dry material is dispensed volumetrically by volume of liquid to form the desired ratio of dry material to liquid.

An apparatus, for producing a mixture of at least one gas and at least one liquid plastic component, includes a mixing device that is connected, via a first pipe, to an introducing device for the at least one gas and is connected, via a second pipe, to a conveying device for the at least one liquid plastic component. The introducing device and the conveying device are piston pumps that have pistons.

A material dispensing system can comprise a first and second supply container housing a first and second material, respectively, comprising a first and second fluid, respectively; a first and second metering cylinder fluidly connected to the first and second supply container, respectively, the second metering cylinder configured to move from a first to a second stroke position in unison with the first metering cylinder; a dispensing head configured to receive a first and second liquid of the first and second fluids, respectively; a first recycling valve positioned between the first metering cylinder and the dispensing head; and a second recycling valve positioned between the second metering cylinder and the dispensing head, the first and second recirculating valves configured to draw a portion of the first and second fluids back into the first and second supply containers, respectively, in an open position.

The present invention concerns a method of mixing aqueous solutions, an apparatus for carrying out said method and the use of dosing devices with integrated dosing monitoring and stroke length control in an installation for mixing container aqueous solutions.