1results about How to "Avoid the extraction process" patented technology

This invention discloses a traditional Chinese medicine extraction device and method for an alcohol precipitation tank with an automatic dregs sensing device. The device includes: a multi-stage cylinder, the first stage of which is connected to the alcohol precipitation tank and can move freely up and down within the tank; the last stage piston rod of the multi-stage cylinder is a hollow tube, inside which a valve-operated cylinder is designed for the flow of medicinal liquid; a valve is installed at the upper end of the hollow tube to control the opening and closing of the medicinal liquid flowing out of the alcohol precipitation tank; a dregs sensing unit is designed at the upper part of the piston rod (hollow tube) of the last stage cylinder, which includes: a sensing cylinder, a sensing piston, a resistance spring, and a pressure sensing valve. The dregs sensing unit is used to sense the position of dregs at the lower end of the alcohol precipitation tank. Once dregs are sensed when the cylinder descends, the pressure sensing valve is immediately triggered, outputting an airflow signal. The pneumatic control system stops the cylinder from descending further, and the entire pneumatic control system automatically shuts down, at which point the valve automatically closes.