2results about How to "Centralized processing" patented technology

The utility model discloses a device for synchronously controlling a withdrawal and straightening machine and a dummy bar of a continuous casting machine. The device comprises a potentiometer, a PLC (Programmable Logic Controller) control system, a signal isolation module, a withdrawal and straightening machine frequency converter, a dummy bar frequency converter and a digital display instrument. The potentiometer is connected to an analog quantity input port of the PLC control system through the one-input one-output optoelectronic isolator and is used for inputting an initial control signal; the output end of the PLC control system is connected with the withdrawal and straightening machine frequency converter and the dummy bar frequency converter to drive the two frequency converters to operate. A feedback signal of the withdrawal and straightening machine frequency converter is divided into two paths to be transmitted to the PLC control system and the withdrawal and straightening machine digital display instrument through the one-input two-output isolator, and a feedback signal of the dummy bar frequency converter is directly accessed to the dummy bar digital display instrument. The device eliminates electromagnetic interference through a photoelectric isolation module, integrates a water distribution model and a molten steel temperature data interface, adopts a standardized interface design for hardware, is adaptive to different continuous casting machine models, has the characteristics of strong anti-interference capability, stable signal transmission and visual real-time monitoring, and effectively improves the operation reliability of equipment.

This invention discloses a laboratory air ventilation device for agricultural product testing, comprising a base with an exhaust duct extending to the outside of the laboratory at its upper end. The base is equipped with a fan, an acid removal chamber, and an alkali removal chamber, which are sequentially connected. Both the acid removal chamber and the alkali removal chamber are equipped with atomizing mechanisms. A reciprocating sliding guide hood is located at the bottom of the activated carbon plate, and jet nozzles corresponding to the activated carbon plate are penetrating through the guide hood. A heating plate is installed inside the acid removal chamber, heating the water to generate steam. The steam is transported to the guide hood through a connecting pipe and sprayed onto the activated carbon plate for desorption treatment. This invention improves acid-base neutralization efficiency and effectively removes acidic and alkaline components from waste gas through multi-stage purification of "acid-base atomization neutralization + activated carbon adsorption and steam desorption." It also enables the recycling of activated carbon, reducing consumable input and the generation of hazardous waste.