Gypsum Board Foreign Matter Removal via Sedimentation
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Solution Overview
Problem
Conventional gypsum board sorting and processing apparatuses are unable to effectively remove non-magnetic non-ferrous metals and foreign matter with high specific gravity, such as pebbles, due to limitations in their foreign matter removal mechanisms.
Innovation Solution
The proposed gypsum-based building board manufacturing apparatus incorporates a foreign matter removing apparatus featuring a conveyance device and a foreign matter sedimentation device with a discharge port at the lowest position and an inclined bottom, allowing for the sedimentation and separation of foreign matter with high specific gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional foreign matter removing means (magnetic pulley) is used, then magnetic foreign matter can be removed, but non-magnetic non-ferrous metals and foreign matter with high specific gravity cannot be removed
Solution Approach 1:
The foreign matter removal system is divided into multiple stages with different mechanisms: a magnetic separator for magnetic foreign matter, and a density-based separator for non-magnetic foreign matter with high specific gravity. Each segment handles a specific type of foreign matter, collectively achieving comprehensive removal that a single mechanism cannot accomplish.
Solution Approach 2:
The invention creates a multi-functional foreign matter removal system that can handle multiple types of foreign matter (magnetic, non-magnetic, high specific gravity, low specific gravity) through different separation mechanisms within a single integrated apparatus, making it universally applicable to various foreign matter types that previously required multiple separate systems.
2Reliability
If density-based separation is implemented to remove high specific gravity foreign matter, then non-magnetic non-ferrous metals and pebbles can be removed, but the device complexity increases
Solution Approach 1:
The magnetic separation mechanism and density-based separation mechanism are merged into a single integrated foreign matter removal apparatus. The density-based separator uses a fluidized bed and air flow system that can be combined with the magnetic pulley system, allowing both separation functions to operate within one apparatus rather than requiring separate standalone devices.
Solution Approach 2:
The invention uses pneumatic principles (air flow, fluidized bed) to achieve density-based separation of foreign matter. By introducing air flow to fluidize the gypsum powder, foreign matter with different specific gravity separates naturally, providing a relatively simple implementation approach compared to mechanical density separation methods.
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
This solution enables the effective removal of foreign matter with high specific gravity from gypsum-based building boards, improving the efficiency and effectiveness of the gypsum board manufacturing process.
Implementation Method 1
a foreign matter sedimentation device that is provided between the supply port and the discharge port on a conveyance path of the conveyance device, and that sediments foreign matter in the powder and granular material
Implementation Method 2
The foreign matter sedimentation device includes both a foreign matter discharge port provided at a lowest position in a height direction and a bottom inclined toward the foreign matter discharge port
Data Source
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AI summary
A foreign matter removing apparatus for removing foreign matter in a powder and granular material is provided. The foreign matter removing apparatus includes: a conveyance device configured to convey the powder and granular material from a supply port to a discharge port that are for the powder and granular material; and a foreign matter sedimentation device that is provided between the supply port and the discharge port on a conveyance path of the conveyance device, and is configured to sediment the foreign matter in the powder and granular material. The foreign matter sedimentation device includes both a foreign matter discharge port provided at a lowest position in a height direction and a bottom inclined toward the foreign matter discharge port.