Herb Grinder with Crush-Free Loading Zone for Material Quality
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Solution Overview
Problem
Conventional hand-held herb grinders often require material to be crushed before grinding, leading to undesirable crushing of the product during the loading and engagement process, which affects the quality of the ground product.
Innovation Solution
The herb processor design features upper and lower cutting elements with specific blade patterns and engagement mechanisms that allow for a crush-free zone, enabling the material to be loaded without crushing, with the upper and lower cutting elements engaging in a specific rotational relationship to minimize interference and optimize grinding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional grinders use opposing rotating elements with blades that fit together tightly, then grinding efficiency is improved, but material is crushed during loading and engagement
Solution Approach 1:
The grinder is divided into distinct functional zones: an upper chamber with blades for grinding, a middle transition zone with gradual blade density reduction, and a lower loading chamber with no blades. This segmentation allows material to be loaded in the blade-free zone without crushing, then gradually processed as it moves upward through increasing blade density.
Solution Approach 2:
Different regions of the grinder have different blade densities and characteristics. The upper region has high blade density for efficient grinding, the middle region has transitional blade density, and the lower region has no blades for gentle loading. This local variation in blade distribution resolves the contradiction between grinding efficiency and material protection.
2Productivity
If blades are positioned to maximize cutting action, then grinding performance is improved, but interference between upper and lower blades occurs
Solution Approach 1:
The blade system is segmented into an upper blade set and a lower blade set with distinct functions and positions. The upper blades are optimized for cutting action while the lower blades are positioned and shaped to guide material flow without interfering with upper blade operation, eliminating interference while maintaining grinding performance.
3Manufacturing precision
If a screen is added to separate finely ground product from coarser material, then product quality is improved, but device complexity increases
Solution Approach 1:
The screening function is merged with the collection chamber structure. The screen is integrated into the lower wall of the collection chamber, combining the separation function with the material collection function in a single structural element, thereby improving product quality without proportionally increasing device complexity.
Data Source
AI summary
A herb processor has an upper cutting element having a descending cylindrical body with blades extending downward from an upper base disk in a first pattern, and a region of a specific geometry devoid of blades, a lower cutting element having an ascending cylindrical body having a central axis, an outer and an inner diameter, blades extending upward from a lower base disk in a second pattern, a region of specific geometry devoid of blades, openings through the lower base disk in a third pattern, and a lower engagement interface, and a cylindrical collection chamber having a lower closed end and an upper engagement interface. The regions devoid of blades provide a crush-free zone.