A system includes a dip tube, a feed line, and a check valve. The dip tube is inserted through an opening in a source of chemical precursor and into the chemical precursor in the source. A portion of the feed line is located in the dip tube. The feed line passes out of the dip tube. The chemical precursor is capable of flowing out of the source through the feed line in a downstream direction. The check valve is located in the portion of the feed line in the dip tube. The check valve permits the chemical precursor to pass substantially only in the downstream direction. The feed line is coupled to a transfer pump that draws the chemical precursor out of the source through the portion of the feed line in the dip tube.

Devices, systems, and methods are provided for mixing by asymmetric rotation using a servo motor to drive the symmetric rotation. The system may include a robotic arm and robotic controller.

A blender system for blending ingredients from a container with a fluid includes a bottle, a liquid heating device, and a container. The bottle has a blending chamber with an opening to receive a fluid and a shoulder about the opening. The lid is configured to couple with the bottle and includes a container receiver. The container receiver is configured to receive the container and position a lip of the container against the shoulder when the lid is coupled to the bottle. The container receiver is further configured to press the container towards the opening while the shoulder holds the lip stationary to discharge the ingredients from the container into the fluid in the blending chamber. The liquid heating mechanism heats the fluid in the blending chamber.

The invention relates to an apparatus (110) for producing foamed building materials, comprising a gas supply unit (112), a suspension supply unit (150-156), and a mixing chamber (118), the apparatus (110) further comprising a control and/or regulating unit (136) which has means (116, 124, 130, 134, 146,) for supplying values of a plurality of input parameters, based on which at least a temperature of the dispersion and an air pressure in an environment of the apparatus (110) can be inferred, the control and/or regulating unit (136) being further configured to influence at least one output parameter, by means of which the ratio of the volumes and/or masses and/or densities of gas and suspension supplied per unit of time can be adjusted. The invention further relates to a corresponding method.

A method for preparing semisolid slurry. The method is achieved using a device for preparing semisolid slurry. The device includes a slurry vessel and a mechanical stirring rod. The mechanical stirring rod includes a first end and a second end extending into the slurry vessel. The method includes: S1. putting a molten alloy having a first preset temperature into the slurry vessel; S2. cooling the molten alloy to a second preset temperature, positioning the second end of the mechanical stirring rod to be 5-25 mm higher than the bottom wall of the slurry vessel, rotating the mechanical stirring rod and injecting a cooling medium into the mechanical stirring rod; and S3: allowing the temperature of the molten alloy to be 10-90 degrees centigrade lower than the liquidus temperature of the molten alloy, stopping stirring and cooling, to yield a semisolid slurry.

A method for controlling the saturation level of gas in a liquid discharge includes obtaining temperature and pressure measurements of a solvent in a mixing vessel and obtaining a pressure measurement of a source feedstock in a feedstock tank, correlating the temperature and pressure measurements of the solvent to baseline data to generate a theoretical uptake rate for the source feedstock into the solvent and a theoretical flow rate of the source feedstock into the mixing vessel, and determining a required opening setting for a feedstock valve in the feedstock input line in order to achieve a desired liquid displacement in the mixing vessel. The method includes determining an uptake duration and achieving an uptake displacement equivalent to the reverse of the desired liquid displacement. The method includes generating a valve operating control law for how the feedstock valve should function in a cycle.

A state monitoring system for stirring-degassing processing that includes: a sensor unit and a computer, the sensor unit including a temperature sensor that determines a temperature of a processing target material and a first transmitter-receiver that transmits output values of the temperature sensor to the computer, the computer includes a second transmitter-receiver, an information recorder, and a processor, the second transmitter-receiver receives output values of the temperature sensor transmitted by the first transmitter-receiver. A phenomenon that may appear in output values of the temperature sensor during processing and content of post-comparison determination processing performed by the processor according to the phenomenon are associated in information that is recorded in the information recorder, and the processor compares information recorded in the information recorder and a specific phenomenon that has appeared in output values of the temperature sensor during processing, and performs post-comparison determination processing according to a result of the comparison.

The invention relates to a high-pressure mixing, dosing and recirculation head for injection or casting reaction molding, said high-pressure mixing, dosing and recirculation head comprising a head body, a mixing chamber, obtained in the head body wherein a valve element or mixing valve slides and in fluid communication with a supply duct, and a self-cleaning element comprising a scraping portion, said self-cleaning element being structured to slide in said supply duct, as well as comprising an apparatus for controlling and commanding mixing, supply and recirculation comprising a plurality of sensors and transducers mounted on board of the head body and of the components parts of the head connected thereto to detect and transform representative physical quantities of at least one operational status of said high-pressure mixing, dosing and recirculation head into electrical signals and an electronic control and storing system adapted to synchronously control and scan said sensors and transducers and adapted to receive and process said electrical signals indicative of said at least one operational status, at the beginning and during the operational phases of said high-pressure mixing, dosing and recirculation head to compare them with each other and with electrical signals representative of a predetermined reference operational status. The invention also relates to a high-pressure mixing, dosing and recirculation method for injection or casting reaction molding.

A nitrous oxide gas mixer includes at least one mixing chamber having at least one nitrous oxide gas connection and at least one oxygen gas connection for introduction of oxygen gas and nitrous oxide gas and at least one flow rate controller, by which a volume flow of the two gases can be respectively adjusted separately and/or together. At least one O.sub.2 emergency button is mounted to the mixing chamber for emergency flooding the mixing chamber with oxygen gas and/or with ambient air.

A screw machine includes an inductive heating device for the processing of material to be processed. The inductive heating device is used to heat the material in a heating zone. In the heating zone, at least one housing portion is made of an electromagnetically transparent material at least partly, the material being non-magnetic and electrically non-conductive, whereas at least one treatment element shaft is made of an electrically conductive material at least partly. During the processing of the material, the inductive heating device generates an alternating magnetic field that produces eddy current losses in the at least one treatment element shaft, the eddy current losses leading to a temperature increase of the at least one treatment element shaft. The material is heated on the at least one heated treatment element shaft, in particular until it melts. The screw machine allows a simple and efficient melting of the material, with the result that a mechanical energy input and a resulting wear of the screw machine can be reduced significantly.