Single Disc Spreading Device for Granular Products
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Solution Overview
Problem
Existing granular product dispensing devices with counter-rotating discs face issues in maintaining desired density and homogeneous distribution when the working width is varied, often resulting in density defects or over dosage along the axis of symmetry.
Innovation Solution
A single-disc dispensing device with a pair of diametrically opposed blades and adjustable power supplies allows for easy variation of working width while maintaining desired density, achieved through angular indexing of the supply plug and varying the diameter of orifices to adapt flow rate and distribution pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If counter-rotating discs with blades are used to propel granules under centrifugal force, then granule ejection and spreading are achieved, but density defects and uneven distribution occur when working width is varied
Solution Approach 1:
The invention changes the geometric parameters of the distribution channels (opening width, shape, and position) to adapt the flow characteristics. By modifying these channel parameters, the system achieves both variable working width and consistent granule density distribution, resolving the contradiction between adaptability and manufacturing precision
Solution Approach 2:
The distribution device is segmented into multiple independent distribution channels with adjustable geometries. Each channel can be independently configured to control granule flow, allowing precise control over distribution patterns while maintaining the ability to vary working width
2Adaptability or versatility
If feed to discs is angularly offset to vary working width, then working width adjustment is enabled, but distribution defects such as separated sheets and uneven flow occur
Solution Approach 1:
The invention introduces dynamic adjustability in the distribution channel geometry, allowing the channel dimensions and positions to be modified according to operating conditions. This dynamic configuration enables working width variation while maintaining distribution homogeneity by optimizing channel parameters for each operating point
3Area of stationary object
If layers are brought closer together to increase working width, then spreading area is increased, but surplus and overdose of product occur along the axis of symmetry
Solution Approach 1:
The invention applies different channel geometries at different locations around the distribution disc. The channel opening widths, shapes, and positions are locally optimized for each sector, allowing precise control over granule distribution in different areas. This local quality approach enables working width variation without causing surplus or overdose along the axis of symmetry
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
Ensures homogeneous and regular distribution of granules across a variable working width without recalculating settings, maintaining consistent density and flow rate, and allowing for simple adjustment and automation for operator comfort.
Implementation Method 1
These granules are generally produced by extrusion and take the form of cylinders of approximately the same diameter as length or the form of lenses to try to improve ballistic properties
Data Source
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AI summary
The device has a single disk (20) with blades (22, 24), and a set of feeders (26, 28) provided with feeding orifices. The feeders feed granular products to the single disk. A changing unit changes an angular spacing separating the feeders, so as to change a working width. Another changing unit varies a section of orifices of the same set of feeders. A feeding valve includes an indexable body comprising the set of feeders feeding the single disk with granular products. The valve includes an arm for allowing indexing of the body.