Concave Scraper Edge for Drum Separator Jamming
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Solution Overview
Problem
Existing devices for separating mixed materials of different flowability, particularly in the food processing industry, face issues with material residues getting stuck between the stripping element and side walls, leading to jamming and extended downtime due to the linear design of the stripping elements.
Innovation Solution
The stripping element is designed with a plate-like rectangular base body featuring concave narrow sides and scraper edges on long sides, allowing for the creation of an escape space for residues, preventing jamming and facilitating easy installation and use on both sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the stripping element has linear narrow sides, then the stripping element can effectively strip material from the drum surface, but material residues become trapped between the stripping element and side walls causing jamming
Solution Approach 1:
The narrow sides of the stripping element are designed with concave curvature instead of linear straight edges. This curved geometry creates an escape space that allows material residues to be deflected away from the side walls, preventing jamming while maintaining effective stripping action on the drum surface.
2Ease of repair
If material residues accumulate between stripping element and side walls, then the device must be stopped for cleaning, but stopping increases downtime and reduces productivity
Solution Approach 1:
The concave curved narrow sides prevent material accumulation by creating an escape path, eliminating the need for frequent stopping and cleaning operations, thereby maintaining continuous productivity.
Solution Approach 2:
The curved geometry enables self-cleaning functionality where material residues automatically escape and are carried away by the drum rotation, without requiring external intervention or device shutdown.
3Reliability
If the stripping element is designed with concave narrow sides, then material residues can escape and jamming is prevented, but the device complexity increases
Solution Approach 1:
The concave curvature is integrated directly into the stripping element's narrow sides, adding geometric complexity only where needed for jamming prevention, while the rest of the stripping element maintains simple linear dimensions for manufacturing ease.
Solution Approach 2:
The concave curvature is applied specifically to the narrow sides where material escape is needed, while the long sides and other functional areas maintain simple linear geometry, optimizing the balance between reliability and manufacturing complexity.
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
This design effectively prevents material residues from getting trapped, ensuring reliable operation by allowing trapped material to escape and reducing downtime during maintenance, while maintaining the ability to scrape the perforated drum across its entire width.
Implementation Method 1
separating mixed materials of different flowability... the more easily flowing components of the pressed material are pressed into the inner cavity of the rotating hollow drum and removed from it, while the more difficult-flowing components of the pressed material remain on the outer surface
Implementation Method 2
at least one stripping element for stripping the pressed material from the hollow drum, wherein the stripping element is designed and configured to strip material residues adjoining a hollow drum from the outside
Data Source
Figure 1
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AI summary
The invention relates to a scraper element (10), designed and configured for scraping material residues from the outside of a hollow drum (20) of a device (21) for separating mixed substances of different flowability, comprising a plate-like and rectangular base body (11) with two longitudinal sides (L1, L2) and two narrow sides (S1, S2) that are shorter than the longitudinal sides (L1, L2), wherein a scraper edge (12) is formed on at least one longitudinal side (L1, L2), characterized in that at least one of the two narrow sides (S1, S2) is at least partially concave. The invention further relates to a device (21) for separating mixed substances of different flowability with at least one such scraper element (10).