Screw Press Separator Frame Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Press screw separators often fail due to high pressing forces when dealing with solids of high dry content, leading to potential breakdown and damage, as the existing screens are not adequately stabilized to absorb these forces.
Innovation Solution
A press screw separator design that incorporates a cylindrical frame mounted without clearance within the housing, which partially stabilizes the screen, absorbs high forces, and prevents deformation, particularly in the regions where high forces occur, using a reinforcing frame and a second screen region that is non-deformable and supported by a grid-like frame to prevent torsion and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screen is used to separate solid components from slurry, then separation function is achieved, but the screen is susceptible to failure under high pressing forces
Solution Approach 1:
The screen is divided into multiple segments that can move independently relative to each other. This segmentation allows the screen to flex and absorb high pressing forces without failing, while still maintaining its separation function. The segments are connected in a way that permits relative movement along the longitudinal axis of the screen.
Solution Approach 2:
The screen design changes its physical parameters dynamically - specifically, the distance between screen segments varies during operation. Under normal conditions, segments are closer together for effective separation. Under high loading, segments move apart to absorb forces, changing the structural parameter of inter-segment distance to prevent failure.
2Strength
If the screen is made more robust to withstand high forces, then screen strength increases, but the device complexity and cost increase
Solution Approach 1:
Instead of making the entire screen a single robust structure, the screen is segmented into multiple simpler components. Each segment can be manufactured independently using standard materials and processes, reducing overall complexity while achieving the required strength through the collective arrangement of segments.
Solution Approach 2:
The screen transitions from a static rigid structure to a dynamic flexible structure. The segments are designed to move relative to each other, allowing the screen to adapt its configuration based on loading conditions. This dynamic behavior provides strength without requiring a complex rigid structure.
3Force
If the screen is allowed to deform under pressure, then force absorption improves, but separation precision deteriorates
Solution Approach 1:
The segmented design allows controlled deformation through segment movement rather than uncontrolled screen distortion. Each segment maintains its geometric precision for separation, while the relative positions of segments can adjust to absorb forces. This preserves separation precision while enabling force absorption.
Solution Approach 2:
The screen changes specific parameters (inter-segment distance) while maintaining critical parameters (segment geometry and opening size) that determine separation precision. This selective parameter change allows force absorption without compromising the precision needed for effective solid-liquid separation.
Data Source
AI summary
The present disclosure may include a press screw separator configured for separating solid components from a slurry containing solid and liquid components. The separator may include a housing, a frame arranged in the housing, and a cylindrical screen which is arranged at least partially in the frame. The separator may also include a screw adapted for pressing out the slurry, which screw may be arranged within the screen and mounted so as to be rotationally movable about a longitudinal axis of the screen. The frame may be mounted in the housing without any clearance.