A method for controlling a pump system as well as to a pump system with multi-component material being dispensed under pressure using a mixer and a spray gun of the pump system, component material being pumped using at least two pumps of the pump system, said component material being stored using liquid tanks of the pump system each allocated to the pumps, said component material being dosed using dosage valves of the pump system each allocated to the pumps, said pump system being controlled by means of a control unit of the pump system, said dosage valves each being regulated using an electric regulating device of the control unit each allocated to the pump, a mixing ratio of the component materials being regulated using a control device of the control unit, said regulating devices being regulated by means of the control device.

This application with regard to an apparatus of mixing a compressed air foam is disclosed. The disclosed application includes a first mixing unit that receives fire water and an undiluted foam solution, and adjusts an inflow of the undiluted foam solution so that a supply amount of the undiluted foam solution is adjusted in proportion to a supply amount of the fire water, and mixes the received fire water and undiluted foam solution to produce a foam aqueous solution; and a second mixing unit that mixes a compressed gas with a foam aqueous solution produced in the first mixing unit to produce a compressed air foam.

Method for producing dispersions of a defined particle size, a liquid mixture dispersion (Dm) being continuously separated into a coarse fraction dispersion (Dg) and a fine fraction dispersion (Df), comprising the following steps: A) continuously or discontinuously producing the mixed dispersion (Dm) in a pre-dispersion process, in which a particle mixture (Pm) of a disperse phase is mixed with a continuous liquid phase to form the mixed dispersion (Dm) and is intermediately stored in at least one mixing tank (Tm), B) introducing the mixed dispersion (Dm) from the pre-dispersion process into at least one continuously operating separating device (VT), C) separating the particle mixture (Pm) of the mixed dispersion (Dm) in the at least one separating device (VT) into coarse particles (Pg) of the coarse fraction dispersion (Dg) and into fine particles (Pf) of the fine fraction dispersion (Df) in accordance with a threshold value for the particle size, D) discharging the fine fraction dispersion (Df) from the at least one separating device (VT) into at least one storage tank (Tv), E) discharging the coarse fraction dispersion (Dg) from the at least one separating device (VT) into at least one disperser (DP), F) crushing the coarse particles (Pg) of the coarse fraction dispersion (Dg) in the at least one disperser (DP) into a dispersed particle mixture (PDm) and returning the dispersed particle mixture (PDm) into the at least one mixing tank (Tm), to the pre-dispersion process, and G) mixing the dispersed particle mixture (PDm) returned to the pre-dispersion process with the mixed dispersion (DM) produced in the pre-dispersion process in the at least one mixing tank (Tm).

Some embodiments provide a recirculating aquaculture system for aquatic life. The system includes a culture tank, a sensor configured to measure a current dissolved oxygen level in the culture tank, a variable speed pump configured to circulate water through the culture tank, and a controller in communication with the sensor and the variable speed pump. The controller is configured to retrieve a dissolved oxygen threshold level and a maximum gas to liquid ratio in the culture tank, retrieve the current dissolved oxygen level, compare the current dissolved oxygen level with the dissolved oxygen threshold level, and automatically increase one of a current water flow rate and a current oxygen flow through the system when the current dissolved oxygen level is less than the dissolved oxygen threshold level.

A method and apparatus for obtaining a product chemistry from a slid block of caustic material is provided. The product is housed within a capsule which is positioned inside a turbulent flow dispenser, which utilizes fluid to erode the block and produce a concentrated solution. The fluid characteristics can be adjusted in the field to achieve a predetermined concentrate level of the solution. The capsule provides a safe and convenient means for handling, storing and shipping the caustic block without exposing the operator or handler to the hazardous material. The capsule includes nested components which can be rotated between a closed or sealed position and an open use position.

A fluid delivery system includes a first pressure sensor disposed on or near a spray gun and configured to monitor a first fluid, and a second pressure sensor disposed on or near the spray gun and configured to monitor a second fluid. The fluid delivery system further includes control system comprising a processor configured to receive a first signal from the first pressure sensor and to receive a second signal from the second pressure sensor. The processor is further configured to derive a pressure difference between the first and the second pressure sensor representative of a fluid pressure difference between the first fluid and the second fluid and to control one or more pumps to obtain a desired pressure difference.

A multi-component fluid delivery system includes a first fluid pump and a second fluid pump. The first and the second fluid pumps are not mechanically coupled to each other. The multi-component fluid delivery system further includes a control system comprising a processor configured to derive a slip ratio for the first fluid pump and the second fluid pump. The processor is additionally configured to apply a master-slave motor control to deliver a specified fluid ratio via the first and the second fluid pumps based on the slip ratio.

A static mixer (M) for homogenizing a mixture of at least two liquids, especially after injection of an auxiliary liquid (L1) into a main liquid (L), includes: a closed container (1), with an inflow conduit (3) extending from a first wall of the container, up to the vicinity of the opposite wall, and an outflow conduit (4) which is substantially parallel to the inflow conduit, each conduit being provided with a device (3a, 4a) for connecting to the outside, through the wall of the container.

The present invention provides a dye blending device. The dye containers of the device are connected with external dye supplying devices via a pipeline to obtain specific dyes; the motor thereof are connected with the dye containers via the pipeline to apply a pressure on the dye containers; quantitative pumps and electronic control valves are disposed between a collection zone and the dye containers to configure the transportation operation of the dye; a controller of the device receives a dye blending instruction, instructs the motor to apply a pressure to a specified dye container, enables a quantitative pump and an electronic control valve corresponding to the specified dye container to output a specified dosage of dye to the collection zone, and instructs a vibrator disposed in the collection zone to generate vibration to blend the mixture dye outputted to the collection zone, thus achieving the objective of automatically blending dyes.

Provided is a dental cleaning device. In the device, by arranging the water pump, the mixing mechanism and the rotating blade, clean water in the water tank enters the input pipe through the first hose and the three-way valve under the action of the water pump, and toothpaste in the toothpaste chamber also enters the input pipe through the three-way valve under the action of the toothpaste pump, and the mixture of clean water and toothpaste enters the mixing chamber through the input pipe to drive the rotating blade to rotate, so that toothpaste and water may be fully mixed, and toothpaste may be effectively prevented from being blocked in the electric toothbrush.