Extraction system

        Extraction equipment mainly includes the extraction tank, filter and extraction liquid storage tanks and other equipment, usually the main production process is heated in the Chinese medicinal materials into solvent extraction, the production process is as follows: extraction tank leakage test and feeding medicine barcode scanning gun to confirm - feeding - into the solvent to a warming decoction, a heat preservation to add secondary solvent, secondary heating decoction to secondary heat preservation, the fluid. The chemical composition of traditional Chinese medicine herbs is complex, some traditional Chinese medicine in the process of extracting also need to collect the essential oil, aromatic water, etc., in order to make the extraction tank internal heated evenly, when extracting tank top and bottom temperature difference is bigger, the extracting tank solution need to be able to form convection automatic cycle. Usually Chinese medicine control mainly by feeding automatic control control, extraction temperature, solvent quantity measurement control, collect naphtha end of automatic control, the medicine, plugging material linkage, automatic control, slag system control, tank bottom lock and the interlocking and protection of the tank bottom opening device, etc. As the main control objectives. Common enrichment processes include double - effect concentration, single - effect concentration. Enrichment process mainly includes the concentrate into liquid, concentrate rehydration, enrichment, and condensate recovery of produced liquid or five parts, in the process control to increase temperature monitoring device, vacuum monitoring device, detection device density detection device and online content, implementation in the process of condensed material temperature, the density of the material, material composition analysis and so on quality target control, online implementation enrichment end point judgement and control of automatic control of produced liquid. Adding concentrator foam-detecting device to solve the material problem of Chinese medicine extract in decompression and heating condition; The liquid level detection device for the liquid level of the condensate was implemented, and the automatic discharge function was realized, and the evaporation process was ensured continuously. Overall design of TCM extract concentrated production is the process of intermittent production, in the process of ethanol extraction and ethanol concentration, existence of flammable and explosive ethanol, is the most typical and the most dangerous in the production environment, so in the overall design must be considered when extraction and enrichment process of the control system of basic requirements: safe, reliable, stable, easy to operate. The control system, such as relay, solenoid valve, isolation gate, and other 24VDC power supply equipment, specially USES redundant 24VDC dc power supply, ensuring the reliable power supply of the system. The simulation of explosion-proof workshop is isolated from the isolation safety grid to ensure the safety of the signal. The overall design of automatic control in the extraction of concentrated production is divided into two parts: the extraction control system (DCS) and the concentration control system (DCS).