Defibrating Apparatus Non-Uniform Discharge Path
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Solution Overview
Problem
The existing defibrating apparatus struggles to generate an air flow for discharging defibrated material downstream of the discharge path, leading to stagnation of the material.
Innovation Solution
The apparatus includes a rotational body within a defibrating chamber that forms a defibrated material from a raw material containing fibers. A supply pipe provides the raw material, and a discharge path with a discharge pipe and section facilitates the discharge of the defibrated material through a system of through-holes in an annular wall and housings that form the discharge path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the discharge path is configured with through-holes in the annular wall, then the defibrated material can be discharged from the defibrating chamber, but the air flow for discharging the material downstream of the discharge path is unlikely to be generated upstream, causing material stagnation
Solution Approach 1:
The discharge path cross-sectional area is made non-uniform along the discharge direction, with the area being larger upstream of the discharge section and smaller downstream. This local variation in geometry creates a pressure gradient that generates air flow from upstream to downstream, preventing material stagnation while maintaining effective discharge through the through-holes in the annular wall.
2Device complexity
If the discharge path has a uniform cross-sectional area, then the structure is simple, but the air flow cannot be generated upstream to prevent material stagnation
Solution Approach 1:
The discharge path is designed with a dynamically varying cross-sectional area along the discharge direction rather than a static uniform area. This dynamic geometry variation enables the generation of air flow upstream of the discharge section, ensuring continuous material discharge without stagnation while maintaining relative structural simplicity.
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 a consistent air flow for discharging the defibrated material, preventing stagnation and reducing variation in defibration degree, thereby improving the efficiency of the defibrating process.
Implementation Method 1
a discharge pipe that receives an applied negative pressure to discharge the defibrated material through the discharge path
Implementation Method 2
a rotational body rotatable around a center at an axis of a rotational shaft; a defibrating chamber that stores the rotational body which when rotated, causes a defibrated material to be formed from a raw material containing fibers
Data Source
AI summary
A defibrating apparatus includes: a circular annular wall in which a through-hole that penetrates the circular annular wall is formed; a rotational body rotatable in a circumferential direction of the circular annular wall inside the circular annular wall; an outer circumferential wall that defines a discharge path that circumferentially surrounds an outside of the circular annular wall; and a discharge pipe that extends from a discharge section of the outer circumferential wall in a direction away from the circular annular wall. A raw material inside the circular annular wall is defibrated by rotation of the rotational body inside the circular annular wall to produce a defibrated material. The defibrated material passes through the through-hole and the discharge path, and is discharged from the discharge pipe.