Unloading System With Flexible Seals For Dynamic Load Isolation
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Solution Overview
Problem
Existing bottom unloading auger systems face challenges with unpredictable dynamic loads due to the behavior of flowable or semi-flowable solids in storage structures, leading to over-design of structures and difficulties in retrofitting, as the loads are asymmetric and influenced by factors like humidity and particle size, causing material to cake and cleave unpredictably.
Innovation Solution
A bottom unloading system with a reclaiming portion that includes a floor forming a cone, supported by a frame with seals and spacers, allowing movement and maintaining a seal between the reclaiming portion and the storage structure's sidewall, enabling installation in existing structures without additional reinforcement, as the seals absorb and isolate dynamic forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the storage structure is designed to handle worst-case dynamic loading, then the structure can withstand unpredictable loads, but the structure becomes over-designed and costly to reinforce for retrofitting
Solution Approach 1:
The unloading system is divided into separate modular components including the auger assembly, support legs, and sealing mechanisms that can be independently installed and removed. This segmentation allows the system to be retrofitted into existing storage structures without requiring complete structural reinforcement, as each component can be adapted to the existing structure's capacity
Solution Approach 2:
Flexible seals and spacers are introduced as intermediary elements between the unloading system and the storage structure sidewall. These intermediaries absorb and isolate dynamic forces generated during material unloading, preventing direct force transmission to the structure while maintaining operational reliability
2Reliability
If the auger system is designed as an integrated package with the storage structure, then the system can handle asymmetric dynamic loads, but it cannot be retrofitted into existing structures
Solution Approach 1:
The support legs are designed with movable and adjustable characteristics, allowing them to adapt to asymmetric loading conditions and varying structural configurations. This dynamic design enables the system to maintain reliability under asymmetric loads while being versatile enough for retrofitting into different existing structures
Solution Approach 2:
The unloading system is designed with universal mounting capabilities through adjustable support legs and adaptable sealing mechanisms that can accommodate various storage structure types and configurations. This multi-functionality allows the same system design to be reliably installed in both new and existing structures without requiring structure-specific customization
3Stability of the object's composition
If the reclaiming portion is fixed relative to the storage structure, then the seal is maintained, but dynamic forces are transmitted to the sidewall
Solution Approach 1:
Flexible seals are used to maintain the seal between the reclaiming portion and the storage structure sidewall while accommodating relative movement. These flexible elements absorb dynamic forces through deformation rather than rigid force transmission, maintaining seal integrity during auger operation and material flow variations
4Force
If the reclaiming portion is allowed to move relative to the storage structure, then dynamic forces are isolated, but the seal may be compromised
Solution Approach 1:
Flexible seals enable the reclaiming portion to move independently for force isolation while maintaining seal integrity through elastic deformation. The seals accommodate the range of motion required for dynamic load absorption without compromising the seal between the reclaiming portion and storage structure
Data Source
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AI summary
An unloading system for use in a storage structure having a sidewall that contains granular stored material. A reclaiming portion is spaced from the sidewall and has a floor portion that extends from a discharge opening toward the sidewall. The floor portion of the reclaiming portion is supported above the floor of the storage structure. The reclaiming portion may move with respect to the sidewall and is isolated from movement with respect to the sidewall of the storage structure. Seals between the reclaiming portion and the sidewall prevent the stored material from bypassing the reclaiming portion so that any discharge of the stored material occurs through the discharge opening.