Wedge-Bar Screen Panel Design for Hair and Fiber Entanglement
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Solution Overview
Problem
Conventional screen plates for sewage treatment facilities face issues with debris entanglement, particularly hair and fibers, leading to clogged screen gaps and rake damage, requiring complex assembly and high production costs.
Innovation Solution
A screen panel design featuring cylindrical support beams with concave fastening grooves and wedge-shaped screen bars, along with a debris guide, allows for easy assembly and prevents debris entanglement, using a non-welding mechanical fastening method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a sliding through-coupling method with support beams is used, then screen bars are supported and structured, but debris such as hair and fibers wrap around the support beams causing screen gaps to block
Solution Approach 1:
The support beam is designed with a curved upper surface instead of a flat surface. This curvature prevents debris such as hair and fibers from wrapping around the support beam, eliminating the blockage problem while maintaining structural support for the screen bars.
Solution Approach 2:
The connection structure between screen bars and support beams is designed asymmetrically with fastening grooves positioned only on the upper portion of the support beam. This asymmetric design allows debris to pass through without entangling while providing stable support for the screen bars.
2Strength
If fastening grooves are machined on support beams, then screen bars are securely fastened, but assembly becomes complex and time-consuming
Solution Approach 1:
The connection structure is segmented into distinct components: fastening grooves on the support beam and corresponding protrusions on the screen bars. This segmentation allows for simple slot insertion assembly without complex machining operations, reducing assembly time while maintaining connection strength.
3Manufacturing precision
If laser cutting is used to cut support beams, then precise dimensions are achieved, but small errors or molten beads cause screen bars to get stuck
Solution Approach 1:
The curved upper surface of the support beam eliminates sharp edges and corners where molten beads could accumulate and cause blockages. The smooth curvature ensures reliable passage of screen bars during assembly even with minor laser cutting variations.
Data Source
AI summary
Proposed is a screen panel for removing debris, the screen panel including a plurality of cylindrical support beams arranged spaced apart from each other, and a plurality of screen bars configured to intersect the plurality of support beams and coupled to the upper portions of the support beams at a predetermined distance from each other, wherein each of the screen bars includes a wedge cross-section part whose width becomes narrower from the top to the bottom, and a vertical flat bar part extending vertically downward from the bottom of the wedge cross-section part, and the support beams have fastening grooves on the upper portions thereof that are concave to correspond to a plurality of vertical flat bar parts and spaced apart from each other.