Telescoping Auger Agitator for Damp Powder Dispensing
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Solution Overview
Problem
Existing powder dispensers, such as those using vibrating mechanisms, struggle to effectively dispense damp or wet powders, as the vibration is insufficient to move these materials, leading to inefficiencies in dispensing processes.
Innovation Solution
A material feeder device with a hopper and auger mechanism, featuring a material flow assist mechanism comprising telescoping arms and a rotating plate that provides dual agitation of the material, ensuring efficient dispensing of powders and granular materials by aligning the elongated members to contact both the hopper inner wall and the material, enhancing material flow to the auger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibrating mechanism is used to dispense powder, then the dispensing mechanism is simple, but it cannot effectively move damp or wet powder
Solution Approach 1:
The material flow assist mechanism is divided into multiple independent components: a frame with two telescoping arms, a cross member, and multiple elongated members (including a first elongated member on the first arm, a second elongated member on the second arm, and a plate). Each component performs a specific agitation function, allowing the system to handle difficult materials through coordinated segmented actions rather than a single complex vibrating mechanism.
Solution Approach 2:
The telescoping arms are designed to dynamically adjust their length based on material level in the hopper. As material is dispensed and the level drops, the arms automatically extend further to maintain contact with the material and continue providing agitation. This dynamic adaptation ensures consistent performance across varying operating conditions without requiring complex control systems.
2Productivity
If vibration is increased to move damp powder, then material flow improves, but the mechanism becomes less effective for dry powders and increases energy consumption
Solution Approach 1:
The elongated members provide localized agitation at critical points where material flow restrictions occur (near the hopper inner wall and near the auger). Rather than applying vibration or agitation throughout the entire hopper volume, the mechanism concentrates action where it is most needed to break arches and prevent bridging, achieving effective material flow with minimal energy input.
Solution Approach 2:
The rotating elongated members create mechanical agitation and disturbance to the material through their rotation and contact with the material mass. This mechanical action, driven by the motor rotating the frame and arms, effectively breaks up compacted damp or wet powder without requiring high-energy vibrating mechanisms, achieving productive material flow at lower energy consumption.
3Reliability
If a single agitation mechanism is used, then the device is simpler, but material flow near the hopper inner wall and between auger and wall is insufficient
Solution Approach 1:
Different elongated members are positioned to address specific local flow problems: the first elongated member contacts the hopper inner wall to agitate material near the wall, the second elongated member positions itself between the auger and wall-agitated material to further agitate that region, and the plate provides additional agitation. Each component is optimized for its local function, ensuring consistent material flow throughout the entire hopper volume including difficult-to-reach areas.
Solution Approach 2:
Multiple agitation functions are merged into a single integrated material flow assist mechanism that rotates with the auger. The frame, arms, elongated members, and plate work together as a unified system driven by one motor, combining wall-contact agitation, interfacial agitation, and central agitation into one coordinated mechanism. This merged approach achieves comprehensive material flow improvement without requiring multiple separate complex mechanisms.
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 device effectively dispenses a wide range of materials, including powders and granules, by ensuring consistent agitation and flow, even when materials are damp or wet, improving the overall efficiency and reliability of the dispensing process.
Implementation Method 1
an auger that is connected to a motor to rotate the auger in the hopper
Implementation Method 2
The elongated member of the first arm contacts an inner wall of the hopper during its rotation. The elongated member of the second arm is positioned so that it is between the auger and the material near the hopper inner wall being agitated by the elongated member of the first arm
Data Source
AI summary
A material flow assist mechanism for a feed hopper using a vertically aligned rotating auger includes a frame, the frame having a pair of spaced apart first and second telescoping arms attached to frame, and a connector to link a shaft of a motor to the auger for auger and material flow assist mechanism rotation. Each of first and second telescoping arms have an elongated member mounted to a plate-containing end portion of each respective first and second telescoping arms. Rotation of the material flow assist mechanism by the motor rotates the first and second elongated members for material dispensing out a hopper. Dispensing of the material from the hopper results in extension of portions of the first and second telescoping arms such that the elongated members and plate travel with a top portion of the material as the top portion of the material in the hopper descends during dispensing.