Variable Width Conveying Panels for Fragile Nut Transfer
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Solution Overview
Problem
Conventional systems for transferring fragile items, such as whole nuts, from a higher elevation to a lower elevation using gravity often result in damage due to blockages and inefficient flow rates, and existing solutions like spiral ramps and alternating panels are ineffective at maintaining the integrity of the items, especially at varying flow rates.
Innovation Solution
A transfer apparatus with alternatingly arranged conveying panels inclined at approximately 30 degrees and arcuate turn-arounds, allowing for a variable effective conveying width based on predetermined mass flow rates, ensuring whole nuts move in a continuous stream without tumbling, and incorporating sensors to detect and adjust for optimal flow rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spiral ramps are used to transfer whole nuts from a first elevation to a second, lower elevation, then the nuts can be conveyed using gravity, but the device becomes blocked with product when mass flow rates are too high, limiting effective through-flow
Solution Approach 1:
The conveying path is segmented into multiple discrete conveying elements (spoons, scoops, or panels) arranged in sequences. Each element handles a portion of the product flow, preventing blockages by distributing the load across multiple segments rather than a single continuous spiral ramp.
Solution Approach 2:
The conveying system uses movable or adjustable conveying elements that can adapt their configuration based on flow conditions. The elements are positioned and oriented to dynamically control product flow, allowing the system to maintain reliable operation across varying mass flow rates without blocking.
2Productivity
If the diameter of spiral ramps is increased to accommodate higher mass flow rates, then more product can be conveyed, but space limitations are exceeded
Solution Approach 1:
The invention transitions from a two-dimensional spiral ramp layout to a three-dimensional arrangement with multiple levels, sequences, and vertical stacking of conveying elements. This dimensional change allows high mass flow rates to be achieved within a compact footprint by utilizing vertical space and multiple conveying paths rather than expanding the horizontal diameter.
Solution Approach 2:
Multiple conveying sequences and elements are nested within each other in a compact arrangement. The conveying panels or spoons are positioned in overlapping or interlocked configurations that maximize space utilization, allowing high throughput without increasing the overall device diameter.
3Productivity
If alternating panel devices are used to transfer whole nuts, then product can be conveyed between elevations, but flow stoppages occur when the angle of inclination is about 35 degrees or less, and splitting occurs due to abrupt turns
Solution Approach 1:
The conveying elements use curved or rounded surfaces (spoon-shaped or scooped panels) instead of flat rigid panels. This curvature allows product to flow smoothly around bends without abrupt directional changes, preventing nut splitting while maintaining continuous flow at low inclination angles below 35 degrees.
Solution Approach 2:
The system optimizes the angle of inclination and curvature radius of conveying elements as adjustable parameters. By carefully selecting and varying these geometric parameters, the device achieves continuous flow without stoppages and prevents product damage from abrupt turns, operating effectively at inclination angles where conventional alternating panel devices fail.
4Adaptability or versatility
If a single apparatus is configured to transfer fragile items at one mass flow rate, then it can operate reliably, but it cannot accommodate different flow rates without requiring separate machines
Solution Approach 1:
The conveying apparatus is designed with adjustable and reconfigurable elements that allow a single device to perform multiple functions across different operating conditions. The conveying panels, spoons, or scoops can be adjusted in position, orientation, and configuration to accommodate various mass flow rates, eliminating the need for separate machines for different flow rate requirements.
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 apparatus efficiently transfers whole nuts at selectively variable flow rates while maintaining their integrity, achieving an optimal speed of 300 feet/minute without splitting or damaging the nuts, and can be adapted for different flow rates by adjusting the conveying width and panel configurations.
Implementation Method 1
conveying panels between the entrance and the exit. Each conveying panel is inclined at approximately 30 degrees to horizontal
Data Source
AI summary
An apparatus for vertical transfer of whole nuts from a first elevation to a second, lower elevation includes a run extending between an entrance and an exit, and having a plurality of alternatingly arranged conveying panels between the entrance and the exit. Each conveying panel is inclined at approximately 30 degrees to horizontal and has a variable effective conveying width. The apparatus further includes arcuate turn-arounds disposed between respective conveying panels to facilitate transferring the nuts from one conveying panel to the next lower conveying panel. The variable effective conveying width is selected based on a predetermined mass flow rate of nuts such that whole nuts move along the run in a continuous stream without tumbling, and wherein each nut is in contact with adjacent nuts in its respective layer.