Rotary Screen Flared Conveyor for Bulk Material Handling
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Solution Overview
Problem
Existing rotating screen apparatuses for bulk material selection require large conveyor belts and significant space for unloading, especially when dealing with materials of high moisture content or liquids, leading to increased electrical consumption and costs.
Innovation Solution
A rotary screen apparatus with a flared annular conveyor element that rotates around the selection surface, allowing for the efficient conveyance of selected materials while reducing the overall dimensions of the apparatus and the necessary conveyor belt size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed hopper with real dimensions corresponding to the screen is used to collect material, then all material can be collected effectively, but the hopper height becomes excessively large and oversized conveyor belts are required
Solution Approach 1:
The patent replaces the static fixed hopper with a rotating hopper that moves synchronously with the screen rotation. This dynamic configuration allows the hopper to maintain optimal positioning relative to the material discharge point throughout the rotation cycle, enabling effective material collection without requiring excessive height or oversized conveyor belts.
Solution Approach 2:
The rotating hopper is integrated with the screen structure, sharing the same rotational movement. This merging of functions allows the hopper to follow the screen's rotational path, eliminating the need for separate large-scale support structures and reducing overall apparatus dimensions.
2Adaptability or versatility
If the hopper walls are inclined close to vertical to prevent material packing, then high moisture materials can be handled, but the unloading hopper requires important development in height
Solution Approach 1:
The rotating hopper creates dynamic material flow conditions through its rotational movement, which prevents material packing without requiring near-vertical wall inclinations. The continuous motion disrupts material settling patterns, allowing the handling of high moisture materials with more moderate hopper dimensions.
Solution Approach 2:
The patent introduces rotational movement as a new dimension to material handling. Instead of relying solely on vertical wall inclination to prevent packing, the system uses horizontal rotation to maintain material flow, effectively transferring the problem from a vertical dimension solution to a rotational dimension solution.
3Productivity
If larger conveyor belts are used to handle material unloading, then material transport capacity is sufficient, but electrical consumption and costs increase
Solution Approach 1:
The rotating hopper synchronizes with the screen rotation to maintain optimal material transfer positioning throughout the cycle. This dynamic coordination ensures that material is discharged at the most efficient point, maximizing conveyor utilization and reducing the total conveyor belt length and power requirements while maintaining full transport capacity.
Solution Approach 2:
The rotating hopper prepares material for discharge by following the screen's rotational path in advance, positioning material optimally before it reaches the conveyor transfer point. This preliminary positioning action ensures efficient material transfer, reducing the need for oversized conveyors and associated energy consumption.
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 effectively unloads materials with high humidity or liquid content while minimizing the dimensions of the conveyor belt and the space required under the unloading area, reducing maintenance needs and operational costs.
Implementation Method 1
a rotary screen apparatus (1) with a selection surface (2) rotatable around an axis (X)
Implementation Method 2
at least one conveyor element (8), which is flared in the annular shape and which is rotatable, in particular pivotally rotatable, around said axis (X)
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Apparatus (1) for the selection of materials, in particular of the type operating with a rotating screen, characterized by the fact that it comprises: - a selection surface (2), which is rotatably rotating around an X axis which is horizontal or inclined with respect to the horizontal, which has a substantially tubular development and which internally delimits an internal chamber (4) which is separated from said selection surface (2), from an external zone (6), said internal chamber (4) being destined to receive the material to be selected and said external zone (6) being destined to receive the selected material following the passage through through holes/meshes of said selection surface (12), and - at least one rotating conveyor element (8), which has a flared annular conformation oriented along the X axis, is integral with said selection surface (2) in its rotation rotatable around the X axis and is mounted around said selection surface (2) to convey outwards the selected material that has crossed the selection surface (12).