Grind Mill Tooth Geometry and Solid Ring for Dry Milling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional devil tooth grind mill designs in the dry mill industry face inefficiencies due to varying tooth height and width ratios, non-uniform solid pathway areas, and inadequate feed inlet designs, leading to reduced grinding capacity and increased power requirements.
Innovation Solution
The design incorporates a solid ring around the outer circumference to control discharge rate, with grind plates featuring a block channel configuration and optimized tooth height-to-width ratios, ensuring a constant solid pathway area and improved feed consistency, utilizing a grind plate design program for application-specific optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional devil tooth grind plate design is used, then grinding capacity is maintained, but power consumption increases and grinding efficiency decreases
Solution Approach 1:
The patent changes the geometric parameters of the grind plate teeth, specifically optimizing the tooth height-to-width ratio and adjusting the tooth arrangement pattern. These parameter changes improve the grinding efficiency by creating more effective cutting edges and reducing the force required for grinding, thereby lowering power consumption while maintaining or enhancing grinding capacity.
Solution Approach 2:
The patent applies different tooth configurations to different regions of the grind plate. The tooth height, width, and spacing are varied locally across the grind plate surface to optimize performance for specific grinding tasks. This local optimization allows efficient grinding with reduced power requirements in different zones of the mill.
2Adaptability or versatility
If varying tooth height and width ratios are used, then design flexibility is improved, but manufacturing precision and consistency deteriorate
Solution Approach 1:
The patent establishes specific parameter ranges for tooth height and width ratios, optimizing these dimensions for different grinding applications. By defining standardized parameter ranges rather than arbitrary variations, the design achieves both flexibility for different applications and consistency for manufacturing.
Solution Approach 2:
The grind plate is divided into multiple tooth units that can be independently designed and manufactured. Each tooth follows standardized dimensional specifications, allowing modular manufacturing with high precision. This segmentation enables consistent replication of optimal tooth designs across the entire grind plate surface.
3Productivity
If non-uniform solid pathway areas are present, then material flow varies, but grinding efficiency and power usage worsen
Solution Approach 1:
The patent designs the tooth arrangement and spacing to create a uniform solid pathway area across the entire grind plate surface. This homogeneity ensures consistent material flow distribution, preventing localized congestion or starvation. The uniform pathway area optimizes grinding efficiency by ensuring all regions of the grind plate work effectively while using power efficiently without wasted energy on uneven material distribution.
4Ease of operation
If inadequate feed inlet design is used, then material feed consistency deteriorates, but grinding capacity and power efficiency worsen
Solution Approach 1:
The patent incorporates a pre-feed mechanism that prepares and positions material before it enters the grinding zone. This preliminary action ensures uniform material distribution and consistent feed rate into the grind plates. By pre-conditioning the material flow, the system achieves better feed consistency and optimizes power efficiency by preventing overload or idle grinding operations.
Data Source
AI summary
A disc mill includes an inlet configured to provide solid material for grinding to the grind plates in a smooth and constant manner. A solid ring is added around an outer circumference of the grind plates to control the grinded solid discharge rate. In some embodiments, the grind plates are configured with constant solid path way open area from row to row. The grind surface and solid pass way open area are maximized by increasing the relative tooth height compared to the tooth width. The teeth can be positioned according to a block channel configurations so as to force the solid material to pass along the grind surface of each row. A grind plate design program is used to enable conjunction of the design parameters with application variation, thereby enabling the optimum grind plate design to meeting various applications needed.