Screening Panel With Non-Parallel Ribs To Prevent Particle Lodging

Solution Overview

Problem

Current screening panels with flat, planar surfaces and flexible ribs face issues with particulate materials becoming entrained or lodged, leading to inefficient screening and size separation, as they allow smaller particles to be blocked and larger particles to pass through due to rib deformation.

Innovation Solution

The screening panels feature a peripheral frame with elongated screening ribs extending in non-parallel directions, such as diagonally, to disrupt the parallel relationship between the feed direction and rib orientation, enhancing material flow and reducing blockages, while support ribs maintain rib rigidity to prevent excessive expansion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If ribs are made flexible to accommodate material flow, then ease of operation is improved, but reliability deteriorates as ribs deform and allow oversized particles to pass through

Engineering Contradiction:

Improvematerial flow accommodationVSAvoidsizing separation accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies curvature by transitioning from flat planar ribs to three-dimensional contoured ribs with rounded surfaces. The contoured shape creates a meandering path for materials and prevents particle lodging while maintaining rib structural integrity through the curved geometry that distributes stress more effectively.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent employs asymmetry by orienting the ribs at non-parallel angles (e.g., 45-degree angles) relative to the feed direction rather than parallel alignment. This asymmetric angular arrangement disrupts the parallel relationship between feed travel and rib orientation, preventing particle entrapment and improving screening efficiency while maintaining rib stability.

Inventive Principle:

Principle #4Asymmetry

2Ease of manufacture

If ribs are oriented parallel to feed direction for simple construction, then ease of manufacture is improved, but productivity deteriorates as particles become entrained and blocked

Engineering Contradiction:

Improverib orientation simplicityVSAvoidmaterial throughput

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The patent employs asymmetry by orienting the ribs at non-parallel angles (e.g., 45-degree angles) relative to the feed direction rather than parallel alignment. This asymmetric angular arrangement disrupts the parallel relationship between feed travel and rib orientation, preventing particle entrapment and improving screening efficiency while maintaining rib stability.

Inventive Principle:

Principle #4Asymmetry

3Ease of manufacture

If flat planar surfaces are used on ribs for simple construction, then ease of manufacture is improved, but productivity deteriorates as smaller particles become blocked on the surface

Engineering Contradiction:

Improvesurface fabrication simplicityVSAvoidscreening efficiency

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The patent applies curvature by transitioning from flat planar ribs to three-dimensional contoured ribs with rounded surfaces. The contoured shape creates a meandering path for materials and prevents particle lodging while maintaining rib structural integrity through the curved geometry that distributes stress more effectively.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentUS8967388B1Vector slot

Publication Date: 2015.03.03 POLYDECK SCREEN CORP

AI summary

A screening panel and screening arrangement are provided for screening materials. The screening panel includes a peripheral frame having a first side frame member and an opposing second side frame member defining an opening therebetween. Further, the screening panel includes a plurality of spaced elongated screening ribs defining a screening surface of the screening panel. The screening panel includes a one or more sets of screening ribs that extend continuously across at least a portion of the screening surface of the screening panel in a non-parallel direction relative to a flow direction of material in the screening arrangement.