A system for monitoring flow conditions of fluid flowing from a product container through a solenoid pump. The system includes at least one solenoid pump comprising a solenoid coil, which, when energized, produces a stroke of the solenoid pump, at least one product container connected to the at least one solenoid pump wherein the at least one solenoid pump pumps fluid from the at least one product container during each stroke, at least one PWM controller configured to energize the at least one solenoid pump, at least one current sensor for sensing the current flow through the solenoid coil and producing an output of the sensed current flow, and a control logic subsystem for controlling the flow of fluids through the solenoid pump by commanding the PWM controller and for monitoring the current through the solenoid pump by receiving the output from the current sensor, wherein the control logic subsystem uses the measured current flow through the solenoid coil to determine whether the stroke of the solenoid pump is functional.

A flow control device is disclosed. The flow control device includes a solenoid, the solenoid including an armature. Also, a piston connected to the armature. The piston includes a primary orifice. The piston having an open position and a closed position. A piston spring connected to the piston is also includes and at least one secondary orifice. The movement of the piston to the open position at least partially opens the at least one secondary orifice and the movement of the piston to the closed position at least partially closes the at least one secondary orifice. The movement of the armature actuates the piston movement and controls fluid flow from the primary orifice through the at least one secondary orifice.

A chemical mixture dispensing assembly for automatically filling a fluid containment with a predetermined ratio of chemicals and water includes a housing that is mountable on a support surface such that the housing is positioned proximate a fluid containment. The housing is fluid coupled to a water source, a first chemical source and a second chemical source. A mixing unit is positioned in the housing and the mixing unit mixes a predetermined volume of fluid from the first chemical source and the second chemical source with a predetermined volume of water from the water source to produce a fluid mixture. The mixing unit dispenses a predetermined volume of the fluid mixture from the mixture outlet to fill the fluid containment with the fluid mixture.

A fluid supply system (150) adapted for metering two or more fluids in controlled proportions and for supplying a resultant mixture, the fluid supply system (150) comprising a plurality of solvent supply lines (104 to 107), each fluidically connected with a fluid source (100 to 103) providing a respective fluid, a pumping unit (110) comprising a reciprocating element (115) adapted for intaking fluid supplied at an inlet of the pumping unit (110) and for supplying the pressurized fluid at an outlet of the pumping unit (110), wherein the pumping unit (110) is adapted for taking in fluids from selected solvent supply lines (104 to 107) and for supplying a pressurized mixture of the fluids at its outlet, a proportioning valve (108) interposed between the solvent supply lines (104 to 107) and the inlet of the pumping unit (110), the proportioning valve (108) adapted for modulating solvent composition by sequentially coupling selected ones of the solvent supply lines (104 to 107) with the inlet of the pumping unit (110), and a longitudinal mixing unit (152) adapted for mixing longitudinally subsequent sections of the fluids so as to modify their succession in flow direction.

A method for generating a gaseous mixture by means of an apparatus including at least two inputs, of which the first is an input for a carrier gas and the second is an input for a pollutant and at least one gas output, a system of solenoid valves, a microfluidic circuit and a mixing cell, the microfluidic circuit comprising a sub-circuit that can be isolated or connected with the mixing cell by virtue of the system of solenoid valves is provided. The method includes the following steps: a) cleaning of the microfluidic circuit by pure air received on the first input; b) forming a first air stream with a gas received on the first input of the apparatus, sending of this first air stream to the mixing cell and addition of a pollutant in the sub-circuit isolated from the mixing cell from at least one pollutant received on the second input of the apparatus; and c) opening of the sub-circuit by the system of solenoid valves, so that the sub-circuit is linked to the first input of the apparatus supplied with gas and to the input of the mixing cell, the opening of the sub-circuit provoking the sending of a second air stream to the mixing cell; wherein the steps b) and c) are repeated until the desired quantity of gaseous mixture is obtained at the output of the mixing cell.

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 liquid ejection device for a vehicle washing facility comprises a storage volume, a first supply line coupled upstream to the storage volume for supplying a first liquid, a supply unit coupled upstream to the storage volume for supplying a second liquid, and a removal line coupled downstream to the storage volume for discharging the liquid to be ejected, with a shut-off device for shutting off liquid flow through the removal line. The storage volume is sealed so that an increase in an internal gas pressure occurs in the storage volume when liquid is introduced. The device further comprises a detection unit for detecting the supplied volume of the second liquid into the storage volume and the internal gas pressure in the storage volume, and a control unit controls the supply of the second liquid based on the detected supplied volume of the second liquid and the internal gas pressure so that a predetermined mixing ratio of the first and second liquid is achieved in the storage volume.

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 system for monitoring flow conditions of fluid flowing from a product container through a solenoid pump. The system includes at least one solenoid pump comprising a solenoid coil, which, when energized, produces a stroke of the solenoid pump, at least one product container connected to the at least one solenoid pump wherein the at least one solenoid pump pumps fluid from the at least one product container during each stroke, at least one PWM controller configured to energize the at least one solenoid pump, at least one current sensor for sensing the current flow through the solenoid coil and producing an output of the sensed current flow, and a control logic subsystem for controlling the flow of fluids through the solenoid pump by commanding the PWM controller and for monitoring the current through the solenoid pump by receiving the output from the current sensor, wherein the control logic subsystem uses the measured current flow through the solenoid coil to determine whether the stroke of the solenoid pump is functional.

A method of mixing at N gases is provided. This method includes providing N gas flow meters, including N gas flows, wherein N is 3 or more. Measuring each of the N gas flows, at first predetermined intervals of time, and totaling each of the measured N flows over a second predetermined interval of time. Adding the N measured gas flows, thereby determining the total gas flow at the second predetermined interval of time. Dividing the total gas flow for each of the N gas flows by the total gas flow, thereby determining a cumulative calculated theoretical percentage for each of the N gas flows over the second predetermined interval of time. And sounding an alarm, and/or terminating the N gas flows, if the cumulative calculated theoretical percentage for any of the N gas flows exceeds a predetermined range value.