Smooth Roller Separator for Root Vegetable Soil Removal
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Solution Overview
Problem
Existing separators for root vegetables or bulbs in the agricultural industry face challenges in effectively separating small potatoes from soil, clods, and stones, leading to reduced crop yield and potential regrowth of weeds, with high-speed rotation causing crop damage and increased power consumption.
Innovation Solution
A device featuring rotatable members with smooth, circular surfaces and helical flats, which are free from projections, allowing for a smaller gap between rollers and the use of cleaning elements to maintain cleanliness at lower rotation speeds, reducing the risk of small potatoes being drawn down and enhancing the separation of soil, clods, and stones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the spacing between counter-rotating rotatable members is reduced to prevent loss of small potatoes, then crop yield is improved, but the ability to separate soil, clod and stones effectively is reduced
Solution Approach 1:
The rotatable members are segmented with circumferential gaps between them, creating multiple smaller separation zones along the circumference. This allows the gap spacing to be reduced without compromising overall separation effectiveness, as each gap contributes to the separation process and small potatoes can be recovered while still maintaining soil and stone separation capability.
Solution Approach 2:
The invention uses multiple gaps around the circumference of the rotatable members rather than a single large gap. This partial action approach distributes the separation function across multiple smaller openings, enabling reduced individual gap dimensions while maintaining cumulative separation effectiveness. The multiple gaps provide sufficient separation capability without requiring large individual spacings that would cause potato loss.
2Reliability
If the rotation speed of rotatable members is increased to reduce build-up of adhered soil, then separation effectiveness is improved, but crop damage due to bruising increases
Solution Approach 1:
The invention extracts the soil removal function from the rotation speed mechanism and assigns it to cleaning elements that actively scrape adhered material from the rotatable members. This allows the rotatable members to rotate at lower speeds that minimize crop bruising, while the separate cleaning elements maintain separation effectiveness by preventing soil build-up that would otherwise require high rotation speeds for removal.
Solution Approach 2:
Cleaning elements act as intermediary components between the rotatable members and the adhered soil. These cleaning elements perform the soil removal function without requiring high rotation speeds, thereby mediating between the need for effective separation and the need to minimize crop damage. The cleaning elements handle the soil removal task that would otherwise necessitate damaging high-speed rotation.
3Loss of substance
If the rotation speed of rotatable members is increased to prevent loss of small potatoes, then crop yield is improved, but power consumption increases
Solution Approach 1:
The segmented structure with multiple circumferential gaps allows the rotatable members to rotate at lower speeds while maintaining effective separation. The distributed gap configuration provides sufficient separation capability without requiring the high rotation speeds that would increase power consumption, thereby reducing energy use while preventing small potato loss.
Solution Approach 2:
The invention extracts the soil removal function from the rotation speed mechanism and assigns it to cleaning elements. This allows the rotatable members to operate at lower, more energy-efficient speeds while still preventing small potato loss and maintaining separation effectiveness through the action of the cleaning elements rather than relying on high-speed 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 solution reduces the loss of small root vegetables, minimizes crop damage, and decreases power consumption while maintaining effective separation of soil and stones, even in wet conditions, by allowing for a smaller gap between rollers and utilizing cleaning elements to maintain cleanliness.
Implementation Method 1
The rotatable members are arranged to draw down soil, clods, stones, haulm and weeds whilst the crop (potatoes), which has a relatively smooth surface, passes over the rollers
Implementation Method 2
The device comprises cleaning elements, one for each rotatable member in said pair, for removing material adhered to a surface of the rotatable member
Data Source
AI summary
There is disclosed a device for separating soil, clod and/or stones from root vegetables or bulbs. In one embodiment, a device (20) for separating soil, clod and/or stones from root vegetables or bulbs comprises at least one pair (23) of rotatable members (22, 24) which are arranged so that soil, stones and/or clods are drawn down between the rotatable members whilst root vegetables or bulbs (28) pass thereover. The rotatable members in said pair are arranged to rotate in opposite directions. At least one of the rotatable members in said pair is resiliently deformable. Each rotatable member in said pair has a surface (40, 42) which is free from projections. The device also comprises cleaning elements (25, 27), one for each rotatable member in said pair, for removing material adhered to a surface of the rotatable member.