High-Consistency Fibrous Material Pulping and Grading Apparatus
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Solution Overview
Problem
Existing pulping and grading processes for fibrous materials with high stock densities are inefficient due to the lack of integration between different processing stages, leading to transport paths and increased energy consumption, wear, and disruption.
Innovation Solution
An integrated apparatus with a pulping module and grading module connected by a common rotor shaft, incorporating a heavy-component separation module, allows for simultaneous pulping and grading with reduced energy consumption and wear, using a compact design and controlled stock density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate machines are used for pulping and grading, then each machine can be optimized for its specific function, but transport paths arise between machines and energy consumption increases
Solution Approach 1:
The patent combines the pulping machine and grading machine into a single integrated apparatus. The pulping rotor and grading rotor are coupled through a common drive shaft, allowing both functions to be performed in one continuous process without material transport between separate machines, thereby reducing energy consumption while maintaining functional optimization
2Ease of manufacture
If separate machines are used for pulping and grading, then each machine can be optimized for its specific function, but transport paths arise between machines
Solution Approach 1:
The patent integrates pulping and grading functions into one apparatus with a unified housing containing both rotors. The common drive shaft couples both rotors mechanically, creating a streamlined system that reduces the complexity of external transport infrastructure while maintaining internal functional separation
Solution Approach 2:
The integrated apparatus is divided into distinct functional modules: the pulping module with its rotor and working elements, and the grading module with its rotor and screen. This segmentation allows each function to be optimized independently while being mechanically coupled through the common drive shaft
3Productivity
If separate machines are used for pulping and grading, then continuous pulping of high stock densities is achieved, but wear and disruption increase
Solution Approach 1:
The integrated apparatus enables continuous processing by eliminating the transfer step between separate machines. Material flows continuously from the pulping rotor to the grading rotor through the same housing, maintaining continuous action and reducing disruption while preserving the ability to process high stock densities
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 apparatus enables efficient, continuous processing of high tonnages of fibrous materials with reduced energy consumption and wear, achieving stable and uniform pulping and grading with integrated liquid reuse, and enhanced material utilization.
Implementation Method 1
a screen, which has a multiplicity of screen openings, through which some of the fibrous material suspension fed to the housing can pass as accepted stock, while another portion of the fibrous material suspension is retained by the screen openings as reject
Data Source
AI summary
An apparatus for processing fibrous materials, in particular fibrous material with high stock densities in the HC range, such as waste paper. The apparatus has a pulping module for pulping fibrous material into a fibrous material suspension, and a grading module, coupled to the pulping module, for subsequent grading of the pulped fibrous material suspension. The pulping module has a housing and a first rotor arranged in the housing. The grading module has a housing with a screen for separating the fibrous material suspension fed in into accepted stock and reject, and a second rotor arranged in the housing. The first and second rotors are formed as a common rotor.