Rotating Basket Mill for Gentle Feed Comminution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing processing technologies for organic substances like foodstuffs and spices face challenges in maintaining the original taste, smell, and color due to high heat input and material adhesion, leading to quality loss and increased machine downtimes.
Innovation Solution
A device with a rotor disk and a basket divided into two processing paths with variable differential speed, allowing for gentle processing of feedstock, and the option to modify the processing paths with baffles or screens, along with the use of process gases for cooling or adding substances to enhance product properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If universal mills, pin mills, hammer mills, or impact mills are used for high comminution capacity, then productivity is improved, but heat input increases causing loss of taste-determining substances
Solution Approach 1:
The processing path is divided into multiple sections (first track section with baffle web, second track section with screen web) allowing different processing stages. This segmentation enables gentle initial processing followed by finer comminution, maintaining low heat input while achieving high productivity through optimized material flow and repeated processing passes.
2Productivity
If high-speed rotor processing is used to increase productivity, then comminution capacity is improved, but material adhesion to machine parts increases
Solution Approach 1:
The device utilizes differential rotation between the rotor and basket, creating dynamic relative motion. This dynamic processing allows adjustment of processing intensity and reduces material adhesion through continuous motion variation, while maintaining high productivity through efficient material circulation and repeated processing in different track sections.
3Manufacturing precision
If intensive processing is applied to achieve complete comminution, then manufacturing precision is improved, but heat input increases causing quality loss
Solution Approach 1:
The first track section with baffle web performs preliminary processing to break down material into smaller pieces before entering the second track section. This preliminary action reduces the processing intensity needed in subsequent stages, achieving complete comminution with lower overall heat input while maintaining manufacturing precision through staged processing.
Solution Approach 2:
Different track sections have different processing characteristics - the first section with baffle web for gentle initial processing and the second section with screen web for finer comminution. This local quality differentiation allows each section to be optimized for its specific function, achieving uniform comminution without excessive heat input.
4Device complexity
If single-stage processing is used to simplify device structure, then device complexity is reduced, but processing completeness decreases
Solution Approach 1:
The processing path is segmented into multiple track sections with different processing characteristics (baffle web section, screen web section). This segmentation enables comprehensive processing of material with different properties in different sections, ensuring processing completeness while maintaining relatively simple device structure through modular design.
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
Ensures complete and gentle processing of organic substances, preserving taste, smell, and color, while minimizing heat input and reducing maintenance downtime, resulting in a homogeneous end product that meets high quality standards.
Implementation Method 1
the feed material, after deflection in the area of the rotor disk, is fed in the radial direction to the working gap
Implementation Method 2
means which supply a process gas to the material flow in the processing zone
Data Source
AI summary
A device for processing feed material, with a housing enclosing a processing space in which a rotor rotatable about the axis of rotation is arranged. The rotor has a rotor disk at which circumference a plurality of axially disposed impact plates is arranged uniformly distributed. A coaxially arranged processing path surrounds the impact plates while maintaining a working gap. Via a material inlet, the device is fed in the axial direction with feed material centrally ending in the processing space, which upon deflection in the region of the rotor disk is fed in the radial direction to the working gap. To ensure complete and gentle processing of the feed material while maintaining its original taste, smell and color, the processing path is part of a basket rotating about the rotational axis.