Screw Press Container Tooth Structure for Anti-Rotation
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Solution Overview
Problem
Screw presses used for processing suspensions of organic materials and liquids face inefficiencies due to suspension rotation, leading to blockages, vibrations, and high maintenance costs, with existing anti-rotation solutions either reducing dewatering efficiency or being costly to implement.
Innovation Solution
A screw press apparatus with a tapered container and screw arrangement, featuring a tooth structure formed by a beveled edge and sharp edge connection, reduces suspension rotation and enhances dewatering efficiency without the need for additional protuberances on the inner surface, allowing for efficient liquid separation and concentration of organic materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bars are arranged on the inner surface of the perforated cylinders to prevent rotation, then suspension rotation is reduced, but the gap between screw flights and perforated cylinder increases reducing dewatering efficiency
Solution Approach 1:
The invention applies local quality by creating teeth only at specific locations where anti-rotation is needed, rather than covering the entire inner surface with bars. The teeth are formed locally at the connection between container parts, providing rotation prevention exactly where required while leaving the rest of the perforated surface intact for efficient dewatering.
Solution Approach 2:
The container is segmented into multiple parts connected together, with the connection between parts forming the tooth structure. This segmentation allows the anti-rotation feature to be integrated into the container structure itself rather than adding separate bars, maintaining the gap between screw flights and container while providing rotation prevention.
2Reliability
If bars are fitted in grooves in the inner surface to prevent rotation, then suspension rotation is reduced, but manufacturing cost increases
Solution Approach 1:
The invention merges the anti-rotation function with the container structure by forming teeth at the connection between container parts. Instead of adding separate bars fitted in grooves, the tooth structure is integrated into the container itself, eliminating the need for additional components and reducing manufacturing complexity and cost.
Solution Approach 2:
The container structure serves dual purposes: it provides the perforated cylinder function for dewatering and simultaneously provides the anti-rotation teeth through its connection design. The container essentially creates its own anti-rotation features through the beveled edge and sharp edge configuration at the connection, eliminating the need for separate anti-rotation devices.
3Reliability
If grooves are milled in the inner surface of the perforated cylinders to prevent rotation, then suspension rotation is reduced, but dewatering performance decreases and machining cost increases
Solution Approach 1:
The tooth structure is created locally at the connection between container parts rather than milling grooves across the entire inner surface. This localized approach provides anti-rotation functionality exactly where needed while preserving the perforated surface area for efficient dewatering throughout the rest of the container.
Solution Approach 2:
The container is divided into multiple parts that are connected together, with the connection itself forming the tooth structure. This segmentation approach creates anti-rotation features without requiring grooves to be milled into the container wall, thereby maintaining dewatering performance while providing rotation prevention.
4Reliability
If conventional anti-rotation devices are used, then suspension rotation is reduced, but device complexity and maintenance requirements increase
Solution Approach 1:
The anti-rotation function is merged with the container structure itself. The teeth are formed as an integral part of the container through the connection between parts, eliminating the need for separate anti-rotation devices and reducing overall device complexity while maintaining effective rotation prevention.
Solution Approach 2:
The container structure provides its own anti-rotation capability through the tooth formation at the connection. Rather than requiring external anti-rotation devices, the container essentially creates and uses its own structural features to prevent suspension rotation, simplifying the overall device design.
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 reduces suspension rotation, improves dewatering performance, and simplifies maintenance by eliminating the need for costly adaptations, achieving higher fiber concentration and reduced operational costs through efficient liquid removal and easy replacement of wear parts.
Implementation Method 1
The screw rotation conveys the suspension from an inlet to an outlet
Implementation Method 2
the liquid is filtrated through the perforations of the cylinder
Implementation Method 3
the organic material suspension is therefore concentrated at the outlet
Implementation Method 4
the tooth is adapted to reduce a rotation of the organic material suspension
Data Source
AI summary
An apparatus for processing a suspension including organic material and liquid, including a housing including an inlet and an outlet; a container arranged within the housing; a screw including a screw shaft and flights arranged within the container; a space defined between the screw and the container, through which the suspension is longitudinally transportable by a rotation of the screw. Further, the container includes a longitudinally extending first part and a longitudinally extending second part; the first part including a beveled edge the second part including a sharp edge whereby an anti-rotation tooth is generated on the inner surface of the container. A method for processing the suspension is also provided.