Technological development and key links in the production line of traditional Chinese medicine preparations
1、 Core architecture of production line
1. Modular functional partitioning
The modern production line for traditional Chinese medicine preparations covers four functional modules: pretreatment (cleaning, cutting, drying), extraction and purification (decoction, extraction, concentration), formulation molding (pill making, tablet pressing, particle packaging), and packaging quality inspection. Each module is seamlessly connected to the material through conveyor belts or pipelines.
Typical configurations include a spiral cleaning machine, a sandwich steam decoction machine, a fully automatic pill making unit, and an intelligent packaging line. The production line integrates a robot grasping system to replace manual feeding.
2. Automated control system
Adopting a PLC+DCS dual control architecture, dynamic adjustment of process parameters such as temperature, pressure, and speed is achieved, with an error control accuracy of ± 1.5%.
Equipped with MES (Manufacturing Execution System) to achieve real-time collection of production data and process traceability, in compliance with GMP electronic record standards.
2、 Analysis of Key Process Technologies
1. Pre treatment technology for medicinal herbs
• Cleaning process: Adopting a combination of eddy current cleaning and high-pressure spray technology, the spiral plate design improves the rolling efficiency of medicinal materials, and the impurity removal rate is>98%.
Cutting and drying: The servo motor drives the cutting blade, with a thickness adjustment accuracy of 0.1mm; the multi-layer crawler dryer can achieve a moisture content reduction from 15% to below 8%.
2. Extraction and concentration process
Dynamic countercurrent extraction technology shortens the dissolution time of active ingredients and saves 30% energy consumption compared to traditional decoction methods.
The membrane separation system is used to remove large molecular impurities and, in conjunction with vacuum low-temperature concentration equipment, retains the activity of thermosensitive components.
3. Optimization of formulation molding
The fully automatic pill making machine uses multi blade wheel collaborative cutting and alcohol lubrication technology to stably control the difference in pill weight within ± 3%.
The dry granulation unit adopts roll extrusion technology to avoid the secondary drying energy consumption of traditional wet granulation.
3、 Quality Control and Standardization Construction
Online detection system: integrating near-infrared spectroscopy (NIR) and machine vision technology, real-time monitoring of pill roundness, tablet hardness, and particle size distribution.
Batch consistency management: The density of the extraction solution is automatically fed back to adjust the concentration time, ensuring that the deviation of the effective ingredient content in different batches is less than 5%.
4、 Environmental Protection and Intelligent Trends
• Waste disposal: The drug residue is used for biomass power generation after spiral pressing and dehydration, and the wastewater is recovered for organic components through a multi effect evaporator.
Digital twin application: 3D simulation models simulate production line failure scenarios, increasing equipment maintenance response speed by 40%.