Powdery Material Feeder Self-Tuning for Pharmaceutical Production
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Solution Overview
Problem
The batch method for producing pharmaceutical tablets is labor-intensive and costly, requiring frequent verification experiments, large facilities, and significant raw material usage, with inefficient feeding of intermediate products and high waste generation during scaling up from small to large molding machines.
Innovation Solution
A processing system with a powdery-material feeding device that allows for continuous mixing and compression, where the feeder supplies a predetermined amount of powdery material to the filling device before the equipment starts, enabling tuning without detaching the feeder and minimizing waste, and ensuring immediate equipment performance by preliminary supply of powdery material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the batch method is used for producing pharmaceutical tablets, then each process can be executed with dedicated equipment, but the production efficiency is low due to standby periods between processes and frequent scaling-up verification experiments
Solution Approach 1:
The patent implements a continuous feeding system where the volumetric feeder operates continuously to supply powdery material to the molding machine, eliminating the standby periods between batch processes. The system maintains continuous operation from material feeding through molding, ensuring that the molding machine receives material without interruption and operates at full capacity throughout the production cycle.
2Ease of manufacture
If the batch method is used for producing pharmaceutical tablets, then each process can be executed with dedicated equipment, but enormous costs are incurred due to frequent verification experiments during scaling-up
Solution Approach 1:
The patent employs feedback control that dynamically adjusts the feeding rate parameter based on real-time measurement of the discharge flow rate. This allows the system to maintain optimal performance across different production scales without requiring extensive verification experiments, as the control parameters are automatically optimized through continuous measurement and adjustment.
3Productivity
If the volumetric feeder is used to discharge powdery material, then a constant amount per predetermined time can be delivered, but tuning is required that involves detaching the feeder and discarding powdery material
Solution Approach 1:
The system performs self-tuning by automatically measuring its own discharge flow rate using a load cell and comparing it to the target flow rate. The feedback control mechanism adjusts the feeding rate without requiring external intervention or detaching the feeder, and no powdery material needs to be discarded during the tuning process as the adjustment is made through controlled parameter changes during normal operation.
4Measurement precision
If the feeder is tuned by detaching it and measuring discharged material, then the relation between control input and flow rate can be measured, but labor and work are increased
Solution Approach 1:
The patent replaces the manual mechanical tuning process with an automated measurement and control system. A load cell electronically measures the discharge flow rate, and a feedback control mechanism automatically adjusts the feeding rate based on the measured value, eliminating the need for manual detachment and measurement operations.
5Ease of manufacture
If the batch method is used for producing pharmaceutical tablets, then separate chambers can be designed for each process, but large space is occupied and facility design becomes complex
Solution Approach 1:
The patent merges the feeding and molding operations into a single integrated continuous production system. The volumetric feeder is positioned directly adjacent to the molding machine, creating a compact unified facility that eliminates the need for separate chambers and intermediate material handling spaces, thereby reducing the total occupied area while maintaining process functionality.
Data Source
AI summary
A processing system includes a powdery-material feeding device including at least one feeder configured to discharge a reserved powdery material, and an equipment including a filling device configured to be fed with the powdery material discharged from the feeder and configured to execute a post process using the powdery material filled by the filling device, in which upon a start of the equipment having stopped filling with the powdery material by the filling device and executing the post process, when the feeder supplies the filling device with the predetermined amount of the powdery material before the start of the equipment being stopped, the processing system executes tuning of measuring a relation between control input provided to a motor of the feeder and a flow rate of the powdery material discharged from the feeder.