Integrated Rotating Screen Filtering Apparatus for Compact Dewatering

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing filtering apparatuses, such as screw and rotary presses, face challenges in downsizing, increased complexity due to separate components, difficult maintenance, and issues with concentricity between inner and outer screens, as well as costly enlargements to improve throughput.

Innovation Solution

A filtering apparatus with concentrically disposed cylindrical or conical inner and outer screens, where the inner and outer screens are integrally formed and rotated together, reducing the number of components, simplifying assembly, and eliminating the need for concentricity management, with a spiral fixed wall that is not rotated and supported in a cantilever manner to facilitate easier adjustment and maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the inner screen and outer screen are separately formed, then the flexibility of the filtering apparatus is improved, but the number of components increases and assembly becomes complicated

Engineering Contradiction:

ImproveflexibilityVSAvoidnumber of components

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The inner screen and outer screen are integrated into a single unit, reducing the number of components and simplifying assembly while maintaining the flexibility needed for different filtering applications

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If the inner screen and outer screen are separately formed, then the ability to replace individual screens is improved, but maintenance becomes troublesome

Engineering Contradiction:

ImprovereplaceabilityVSAvoidmaintenance

Core Design Contradiction:

Adaptability or versatilityVSEase of repair

Solution Approach 1:

The integrated screen unit is designed with segmented sections that can be independently accessed and replaced, allowing maintenance of individual screen sections while keeping the overall structure unified

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If the inner screen and outer screen are separately pivoted, then the independence of movement is improved, but concentricity management becomes difficult

Engineering Contradiction:

Improveindependence of movementVSAvoidconcentricity

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The inner and outer screens are combined into a single pivoting unit with a common axis, ensuring automatic concentricity while maintaining independent filtering surfaces

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated screen unit is designed with equal rotational potential around a common axis, ensuring that both screens maintain concentric alignment during rotation without requiring separate adjustment mechanisms

Inventive Principle:

Principle #12Equipotentiality

4Stability of the object's composition

If the spiral fixed wall is supported by and fixed to both ends, then the structural stability is improved, but the length of the fixed wall must be accurately formed and adjusted during assembly

Engineering Contradiction:

Improvestructural stabilityVSAvoidassembly adjustment

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The spiral fixed wall is designed with adjustable support mechanisms that allow for dynamic length adjustment during assembly, maintaining structural stability while eliminating the need for precise pre-manufacturing of the wall length

Inventive Principle:

Principle #15Dynamics

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 solution achieves reduced component count, simplified assembly and maintenance, and improved dewatering performance while maintaining compactness and efficiency, allowing for effective discharge of filtrate and cake without the need for complex concentricity adjustments.

Implementation Method 1

a filtrate having passed through the inner screen and the outer screens is discharged to an outside

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Implementation Method 2

a cake formed by the filtering is elevated along the fixed wall and discharged to an upper side of the filtering room

Methodology Applied

Scientific EffectSpiral conveyance: Archimedes Screw

Data Source

PatentUS8192624B2Filtering apparatus

Publication Date: 2012.06.05 TSUKISHIMA JFE AQUA SOLUTION CO LTD

AI summary

The invention relates to a filtering apparatus in which improvement of maintenance of a driving system, reduction of the number of components, and ease of assembly are achieved. In the filtering apparatus, cylindrical or conical inner and outer screens are concentrically disposed such that centers of the inner and outer screens are set along a vertical direction, at least one spiral fixed wall is provided in a filtering room between the inner screen and the outer screen, the inner screen and the outer screen are rotated around the centers thereof while the spiral fixed wall is not rotated, a treated liquid is delivered from a lower end side of the filtering room, a filtrate having passed through the inner screen and the outer screen is discharged to the outside, a cake formed by the filtering is elevated along the fixed wall and discharged to an upper side of the filtering room, the inner screen and the outer screen are coupled to each other below a lower end of the fixed wall, the inner screen and the outer screen are not coupled above the coupling position so as to be opened in a ring-like shape, and the inner screen and the outer screen are integrally rotated by a common driving power source.