Disk Roller Screen Anti-Clogging Mechanism
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Solution Overview
Problem
Conventional screens with disk rollers face issues with clogging due to elongated elements like filaments or sheets of plastic, especially when wet, which can trap and obstruct the anti-clogging tubes, leading to inefficient operation and increased energy consumption.
Innovation Solution
The screen incorporates anti-rotation rods within the idle tubes to prevent complete rotation, ensuring that trapped elements do not cause clogging, and features a supporting structure that optimizes spacing and motor control for efficient aggregate advancement and reduced energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If idle tubes are used to prevent clogging, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements idle tubes nested within the roller structure, with each idle tube containing an anti-rotation rod inside it. This nested configuration allows the idle tubes to rotate freely about the roller shafts while the anti-rotation rods prevent complete rotation, creating a compact and efficient anti-clogging mechanism without excessive complexity
Solution Approach 2:
The idle tubes act as intermediary elements between the roller disks and the material stream. They provide a rotating barrier that prevents elongated elements from bridging between disks, while the anti-rotation rods within them provide the necessary constraint to maintain their effectiveness
2Reliability
If anti-clogging tubes are added to prevent element trapping, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The anti-rotation rods are nested inside the idle tubes, creating a simple two-component system that is easy to manufacture and assemble. The rods can be inserted into the tubes after the tubes are positioned on the roller shafts, simplifying the manufacturing process while ensuring proper functionality
Solution Approach 2:
The anti-clogging function is segmented into two distinct components: the idle tubes that provide the rotating barrier and the anti-rotation rods that prevent complete rotation. This segmentation allows each component to be manufactured independently using simple processes, then assembled together
3Productivity
If conventional screens with nets are used for separation, then separation effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent replaces the complex mechanical advancement system required by net screens with a simpler gravity-fed system. Material is loaded onto the rollers and advances through gravity and the rolling motion itself, eliminating the need for powerful drive mechanisms while maintaining effective separation through the disk roller geometry
Data Source
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AI summary
A screen with disk rollers (10), comprising a plurality of mutually parallel rollers (30) that are installed on a supporting structure (20) and actuated by way of at least one motor and means for transmission in a same direction of rotation, the rollers (30) being each constituted by a shaft (35) on which a plurality of disks (40) is fixed; the rollers (30) comprise idle tubes (45) arranged between pairs of adjacent disks (40), the idle tubes (45) being provided with rods (50) adapted to mechanically prevent the complete rotation of the idle tubes (45).