Variable-Speed Refiner for Short-Fiber Beating Control
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Solution Overview
Problem
Existing refiners face limitations in processing materials with short fibers or no stiffness, as they rely on adjusting the gap between the stator and rotor beating parts, which is not effective for all raw materials.
Innovation Solution
The refiner variably controls the rotation of the motor of the rotor beating part instead of adjusting the gap between the stator and rotor beating parts, allowing for effective beating of raw materials with short fibers or no stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the gap between the stator beating part and the rotor beating part is adjusted, then the beating effect for conventional materials is improved, but the device cannot effectively process materials with short fibers or no stiffness
Solution Approach 1:
The patent changes the control parameter from static gap adjustment to dynamic rotation speed control. The motor control part varies the rotation speed of the rotor beating part according to different raw materials, replacing the traditional gap adjustment mechanism. This allows the same mechanical structure to adapt to different materials by changing operational parameters rather than physical dimensions.
Solution Approach 2:
The patent introduces dynamic control by making the rotor beating part's rotation speed variable rather than fixed. The motor control part enables real-time adjustment of rotation speed during operation, transforming a static mechanical system into a dynamic one that can respond to different material properties without physical reconfiguration.
2Ease of manufacture
If the gap between the stator beating part and the rotor beating part is fixed, then the device structure is simplified, but materials with short fibers or no stiffness cannot be effectively beaten
Solution Approach 1:
The patent maintains a fixed mechanical structure for ease of manufacture but compensates for material adaptability by changing the operational parameter (rotation speed). The motor control part enables the system to process different materials including those with short fibers or no stiffness by adjusting rotation speed, eliminating the need for complex gap adjustment mechanisms.
3Reliability
If traditional gap adjustment methods are used, then the beating effect for stiff materials is achieved, but short fiber materials or non-stiff materials cannot be processed
Solution Approach 1:
The patent preserves the reliable beating mechanism for conventional materials while extending capability to diverse materials through parameter changes. By controlling the motor to vary rotation speed, the system can optimize beating intensity for different material types, maintaining effectiveness for stiff materials while enabling processing of short fiber and non-stiff materials that were previously unprocessable.
Data Source
AI summary
A refiner for beating a raw material supplied between a stator beating part and a rotor beating part, and discharging the beaten raw material, the refiner including a rotating shaft, the rotor beating part attached to the rotating shaft, a motor configured to drive the rotating shaft; and a motor control part configured to variably control a rotation of the motor. The rotation of the motor of the rotor beating part is controlled by the motor control part to beat the raw material.