Flexible Scraper Chute Cleaning for Gluing Particle Adhesion
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Solution Overview
Problem
The formation of solid adhesions within chutes used for gluing particles in the production of material panels leads to contamination, downtime, and potential damage to equipment, as existing solutions like scraper blades and cooling systems are either ineffective or require complex mechanical constructions.
Innovation Solution
A chute arrangement featuring a flexible scraper element that moves along the inner wall to clean the spatula and can be easily removed for cleaning, combined with a drive mechanism to set the scraper element in motion, preventing the formation of solid deposits and maintaining chute cleanliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scraper blades are firmly attached with a support structure to clean the chute inner walls, then larger deposits can be prevented from forming, but new surfaces are introduced that become dirty and require cooling systems to reduce adhesion
Solution Approach 1:
The patent applies the dynamics principle by making the scraper blade movable relative to the chute wall through a lever mechanism. The scraper blade can pivot and adjust its position dynamically, allowing it to effectively clean deposits without requiring a complex fixed support structure. This dynamic adjustment capability enables the scraper to maintain contact with the wall while reducing the need for additional cooling systems.
Solution Approach 2:
The patent extracts the cooling system from the mandatory components by demonstrating that a simplified scraper mechanism can achieve effective cleaning without relying on cooling surfaces. The scraper blade design focuses on mechanical removal of deposits through leverage and motion, taking out the dependency on thermal management systems that were previously considered necessary.
2Reliability
If the system is shut down regularly to clean the chute, then contamination and solid deposits can be removed, but production downtime increases
Solution Approach 1:
The patent implements continuous cleaning action through the scraper blade mechanism that operates during normal production. The scraper is driven by the movement of material through the chute and can be periodically actuated by the lever mechanism to clean the walls continuously or at frequent intervals, eliminating the need for shutdown cleaning and maintaining uninterrupted production.
Solution Approach 2:
The scraper blade system is designed to be self-actuating through the lever mechanism that utilizes the natural movement and pressure of material flow in the chute. The cleaning action is triggered automatically by the material flow itself, requiring no external power source or manual intervention, thereby enabling continuous autonomous operation during production.
3Object-affected harmful factors
If a cooling system is implemented to prevent adhesion of binder, then condensate film formation can reduce stickiness, but moisture condensation may be undesirable depending on binder requirements
Solution Approach 1:
The patent removes the cooling system entirely from the chute design, replacing it with a mechanical scraper solution. This extraction eliminates the problem of moisture condensation and its incompatibility with certain binder types, while still achieving effective prevention of adhesion through mechanical scraping action during material flow.
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 flexible scraper element effectively prevents the accumulation of solid deposits within the chute, reducing downtime and ensuring consistent product quality by keeping the chute and scraper surfaces clean, while being easily integratable into existing systems.
Implementation Method 1
a flexible scraper element (22) for cleaning the at least one spatula (27), the flexible scraper element (22) being stretched over the inner wall (21a) in the travel path of the at least one spatula (27)
Implementation Method 2
drive means (29) are further provided which are designed to set the flexible stripping element (22) into movement in a direction of the longitudinal extent of the flexible stripping element (22)
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3D
AI summary
A fall duct arrangement (20), in particular for a device for gluing particles which consist at least partly of fibers and/or chips suitable for producing material boards, has a fall duct (21), which has an inlet for supplying the particles and an outlet for discharging the particles, and a scraper (27), which is arranged so as to move relative to an inner wall (21a) of the fall duct (21) in order to clean the inner wall (21a). The fall duct arrangement (20) further has at least one flexible stripping element (22) for cleaning the at least one scraper (27), said flexible stripping element (22) being stretched over the inner wall (21a) in the travel path of the at least one scraper (27). In addition, driving means are provided which are designed to move the flexible scraping element in a direction of the longitudinal extension of the flexible stripping element (22). 1469