Coffee bean grinding mechanism
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Solution Overview
Problem
Existing coffee bean grinding mechanisms face issues with clogged powder deposits, leading to potential food damage from rotten coffee bean powder mixing with freshly ground coffee, due to complex and inflexible designs that hinder easy disassembly and powder removal.
Innovation Solution
A coffee bean grinding mechanism featuring a conical inner and outer blade with a gap-adjusting mechanism, where the blades are detachably attached and can be easily disassembled for cleaning, utilizing a rotary vane to sweep ground coffee into a discharge port, and a worm gear system for adjusting grain size, allowing for improved powder discharge and reduced risk of clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support table and support side wall are fixed to the charge container with screws, then the structure is stable and the gap can be adjusted, but the powder becomes clogged between the second blade portion and the support table/side wall and cannot be easily removed
Solution Approach 1:
The support table is divided into an upper table body and a lower table body that can be separated from each other. The second blade portion is attached to the upper table body, while the support side wall is attached to the lower table body. This segmentation allows the upper and lower table bodies to be easily separated for cleaning, preventing powder clogging while maintaining structural stability during operation.
2Adaptability or versatility
If the second blade portion is fixed to the charge container via a feed screw mechanism, then the gap can be adjusted, but the structure becomes complex and powder clogging prevents easy disassembly
Solution Approach 1:
The support table is segmented into separable upper and lower parts, simplifying the overall structure. The feed screw mechanism is integrated into this segmented design, allowing gap adjustment while enabling easy disassembly for cleaning, thus reducing structural complexity while maintaining adaptability.
Solution Approach 2:
The second blade portion is extracted as a separate component attached to the upper table body, which can be easily detached. This extraction simplifies the structure by making the blade portion independently removable, facilitating cleaning without disassembling the entire charging container.
3Reliability
If the blades are fixed in place, then the grinding structure is stable, but the discharged powder remains deposited in the mechanism and may rot
Solution Approach 1:
The support table is segmented into separable upper and lower table bodies, allowing the second blade portion to be easily removed from the charging container. This segmentation maintains grinding stability during operation while enabling simple disassembly for thorough cleaning, preventing powder deposition and rotation.
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 mechanism effectively prevents clogged powder deposits, ensuring clean and safe grinding by allowing easy disassembly and cleaning, enhancing the discharge efficiency of coffee beans and reducing the risk of food damage from rotten coffee powder.
Implementation Method 1
a female screw, which is screwed onto a pin that is formed on the outer periphery of the conical outer blade to protrude to the outer periphery of the drum from a notch formed in the drum to be parallel with the axis when the upward and downward movement cam is fitted to the outer periphery of the drum, is engraved in an inner periphery of the upward and downward movement cam, which moves the conical outer blade in the axial direction to change the size of the gap when the pin that rotates to be screwed into the female screw moves due to screw action
Implementation Method 2
a rotary vane that rotates together with the conical inner blade to sweep out the ground coffee bean to the discharge port
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is provided a coffee bean grinding mechanism without a concern that powder of a coffee bean remains as deposited in the coffee bean grinding mechanism and the powder which has remained to be rotten is mixed with powder of the coffee bean which is normally ground to cause food damage. The coffee bean grinding mechanism 1 can be simply disassembled. Namely, a grain size-adjusting rotary component 7, an upward and downward movement cam 5, and a conical outer blade 6 can be separated from a drum 2a by being moved in a direction parallel with an axis of a rotary shaft 9. In addition, since a conical inner blade 4 and a rotary vane 3 are detachably attached to the rotary shaft 9 by a nut 10, the conical inner blade 4 and a rotary vane 3 can be simply removed from a base 2. Therefore, it is possible to simply remove residual milled powder deposited in the drum 2a and milled powder adhering to the components by separating the components from each other.