Raw Material Supply Device Magnetic Metal Separation
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Solution Overview
Problem
Existing paper recycling systems face issues with inconsistent metal piece attraction, leading to uneven supply amounts of recycled paper, which affects weight measurement and quality in paper manufacturing.
Innovation Solution
A raw material supply device with a housing, rotor, and magnet configuration that ensures metal pieces are attracted and separated from small pieces, allowing for accurate weight measurement and consistent supply, featuring a rotor with protruding portions and strategically placed magnets to enhance magnetic force and adsorption efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plate magnet is provided in the pipe passage to attract metal pieces, then metal pieces can be removed from used paper, but the supply amount of small pieces becomes uneven when metal pieces are mixed in the aggregate
Solution Approach 1:
The patent extracts metal pieces from the aggregate of small pieces using a magnet positioned at the discharge port. The magnet selectively removes metal pieces as the rotor discharges the aggregate, preventing metal contamination in the final product while maintaining consistent supply amounts of small pieces.
Solution Approach 2:
The magnet acts as an intermediary element between the aggregate discharge and the final product. It intercepts metal pieces in the path of discharged material, separating them from small pieces before they can contaminate the recycled paper product, thus ensuring both metal removal and supply consistency.
2Productivity
If the transport amount of used paper by belt conveyor increases, then more used paper can be processed, but metal pieces cannot be sufficiently attracted by the plate magnet
Solution Approach 1:
The system performs preliminary crushing of used paper into small pieces before the magnetic separation stage. This pre-processing reduces the size of paper fragments, allowing metal pieces to be more easily distinguished and attracted by the magnet, even when large amounts of material are being processed through the system.
Solution Approach 2:
The patent divides the paper recycling process into distinct stages: crushing, magnetic separation, and discharge. By segmenting the process, the system can handle high volumes of used paper through continuous feeding while ensuring thorough metal piece removal at the separation stage, maintaining both productivity and attraction efficiency.
3Productivity
If metal pieces are mixed in the aggregate of small pieces, then the aggregate can be discharged efficiently, but the weight measurement of small pieces becomes inaccurate
Solution Approach 1:
The system creates a clean copy of the small pieces aggregate by removing metal pieces through magnetic attraction at the discharge port. The magnet effectively replicates a metal-free version of the aggregate, ensuring that weight measurements reflect only the small pieces material without metal contamination, while maintaining efficient discharge flow.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures accurate weight measurement and consistent supply of small pieces, preventing metal piece interference and maintaining uniformity in paper manufacturing, resulting in stable production of sheets with uniform thickness and density.
Implementation Method 1
a magnet provided on the discharge port or on a downstream side of the discharge port... the metal piece can be attracted to the magnet and can be adsorbed as it is
Implementation Method 2
a rotor provided in the housing and including a protruding portion... the aggregate flows downward
Data Source
AI summary
A raw material supply device includes a housing that stores an aggregate of small pieces, a discharge port through which the small pieces are discharged from an inside of the housing, a rotor provided in the housing and including a protruding portion, and a magnet provided on the discharge port or on a downstream side of the discharge port. In addition, it is preferable that the raw material supply device further include a passage route that communicates with the discharge port and through which the small pieces pass, in which at least one pair of the magnets is disposed on one side and the other side via the passage route.