Pivotable Grid Screen for Bulk Material Cleaning
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Solution Overview
Problem
Existing firewood cleaning devices are part of complex wood processing systems, require uniform log dimensions, and suffer from inadequate distribution and cleaning of loose material, limiting their standalone use and efficiency.
Innovation Solution
A firewood cleaning device with a table-like frame holding a grid sieve connected to a vibration-generating device, featuring a hopper above the sieve and guide devices forming a mulching funnel, allowing controlled distribution and extended dwell time of bulk material, with adjustable angles and vibration decoupling for improved separation and collection of impurities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the grid screen is fixed in position, then the structure is simple, but the adaptability to different bulk materials and cleaning efficiency are reduced
Solution Approach 1:
The grid screen is made pivotable around a rotation axis, allowing it to change its inclination angle dynamically. This enables adaptation to different bulk materials and cleaning requirements without requiring multiple fixed screens, thus improving versatility while maintaining relatively simple structure through a single movable component.
Solution Approach 2:
The inclination angle of the grid screen can be adjusted to different values depending on the bulk material properties and desired cleaning efficiency. This parameter change allows the same device to handle various materials effectively, achieving adaptability without increasing structural complexity.
2Productivity
If the bulk material is distributed quickly across the screen, then the processing speed is high, but the cleaning effectiveness is reduced
Solution Approach 1:
The grid screen's inclination angle can be dynamically adjusted to control the speed at which bulk material moves across the screening surface. By optimizing this angle, the system achieves an ideal balance between processing speed and cleaning effectiveness, allowing sufficient dwell time for effective separation while maintaining high productivity.
Solution Approach 2:
Changing the inclination angle parameter of the grid screen controls the material flow rate across the screen. A smaller angle increases dwell time and improves cleaning effectiveness, while a larger angle increases processing speed. The system allows parameter optimization based on specific operational requirements.
3Object-affected harmful factors
If the grid screen operates without vibration decoupling, then the structure is simpler, but the vibration transmission to the frame increases
Solution Approach 1:
Vibration decoupling means are introduced as intermediary elements between the grid screen and the table-like frame. These intermediaries absorb and isolate vibrations, preventing harmful vibration transmission to the frame while maintaining the essential screening function. The addition of these decoupling elements increases structural complexity but significantly reduces harmful vibrations.
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
Enables efficient cleaning of bulk materials with varied dimensions, ensuring complete separation and collection of impurities, adaptable to different properties, and facilitating easy transport and distribution of cleaned logs.
Implementation Method 1
The grid screen or grid is connected to a vibration generating device and is thus set into vibrating movements
Implementation Method 2
means for vibration decoupling or vibration damping being formed between the grid screen and the table-like frame
Data Source
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AI summary
Firewood cleaning device, consisting of a table-like frame (1) which receives a grid screen (2) via a support (7), wherein the grid screen (2) is connected to a vibration generation device (3), a feed hopper (4) which can be connected to the grid screen (2) and is arranged above the grid screen (2), and a mulch hopper located below the grid screen (2) which consists of several guide devices (5), wherein the grid screen (2) is pivotably mounted about a pivot axis (6) to specify different grid inclination or discharge angles, wherein means (8) for vibration decoupling between the grid screen (2) and the table-like frame (1) are provided both in the area of the pivot axis (6) and in the area of the support (7).