Crushing device and method for crushing raw materials
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Solution Overview
Problem
Existing crushing devices face challenges in efficiently comminuting raw materials, particularly in the food sector, while minimizing contamination and ensuring continuous operation without clogging.
Innovation Solution
A comminution device comprising a rotatable circular cone with a fissured structure and a stationary funnel-shaped grinding means, featuring progressive toothing and a conveying channel that radially accelerates materials to prevent blockages, allowing for efficient comminution and easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional crushing devices are used, then material comminution is achieved, but material sticking and clogging occurs in the grinding gap
Solution Approach 1:
The grinding means are divided into multiple grinding zones with progressively finer teeth along the conical surface. This segmentation allows material to be progressively comminuted from coarse to fine particles, preventing large particles from causing blockages while maintaining continuous operation
Solution Approach 2:
The crushing cone rotates dynamically while material is fed continuously. The rotational motion combined with the progressive toothing creates dynamic comminution action that prevents material sticking and ensures continuous flow through the grinding gap without blockages
2Manufacturing precision
If high cutting frequency is achieved for fine grinding, then material comminution quality improves, but device complexity increases
Solution Approach 1:
Conical grinding surfaces are used instead of flat surfaces. The curved conical geometry naturally guides material flow while the progressive toothing on the conical surface achieves fine grinding through rotational motion, simplifying the overall mechanism compared to complex multi-axis systems
Solution Approach 2:
The feeding mechanism and grinding mechanism are merged into a single integrated system where material is fed centrally and ground progressively as it moves outward along the conical surfaces. This combination eliminates the need for separate feeding and grinding mechanisms, reducing device complexity while maintaining fine grinding capability
3Productivity
If large raw materials are processed, then throughput capacity increases, but contamination risk increases
Solution Approach 1:
Large raw materials are comminuted progressively from the center outward, with larger particles being broken down in outer grinding zones. This extraction approach separates the comminution process into stages, allowing large materials to be processed without contaminating the entire grinder, as each zone handles appropriate particle sizes
Solution Approach 2:
Different zones of the conical grinding surfaces have different tooth configurations optimized for local particle size requirements. Outer zones handle larger particles with coarser teeth, while inner zones produce finer particles with finer teeth, preventing cross-contamination and optimizing each local area for its specific function
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 device achieves high throughput and fine grinding of materials, minimizing contamination and ensuring continuous operation by preventing material sticking and clogging, with the ability to process large raw materials and achieve a high cutting frequency.
Implementation Method 1
The supplied material is radially accelerated by the centrifugal forces acting during the rotation of the first grinding means and is thereby conveyed particularly quickly to the comminution area
Data Source
Figure 1(A)~1(B)
Figure 2(A)~2(B)
Figure 2(C)~2(E)
AI summary
The invention relates to a crushing device consisting of at least two parts, for crushing coarse-grained material, especially coarse-grained materials (R) from the foodstuff sector. The crushing device comprises at least one first axially rotatable grinding means and at least one second grinding means which is fixed in relation to the at least one first axially rotatable grinding means, said second grinding means receiving the at least one first axially rotatable grinding means and being actively connected to the first axially rotatable grinding means for the crushing of the coarse-grained material. According to the invention, the at least one axially rotatable grinding means has at least one transport channel for the material to be respectively crushed. The at least one transport channel comprises at least one first section extending in the axial direction and at least one second section which is connected to the at least one first section in an angled manner and penetrates an outer envelope surface of the axially rotatable grinding means. The invention also relates to a method for crushing a coarse-grained material.