Filter Device Cylindrical Housing Tangential Outlet

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Solution Overview

Problem

Existing screening devices for granules require a large overall height and are prone to adhesion or deposits of granules in the conically shaped suction shoe area, which restricts product transfer and requires significant spatial installation.

Innovation Solution

A compact screening device design that eliminates the conical suction shoe area, featuring a cylindrical screen housing with a tangentially arranged outlet opening for screened granules and an inlet opening for transfer air, which minimizes adhesion and optimizes product transfer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conical suction shoe area is used in the screen housing, then granules can be effectively collected at the outlet, but adhesion and deposits of granules occur in the conical area, restricting product transfer

Engineering Contradiction:
Improvegranule collection effectivenessVSAvoidadhesion and deposits of granules
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent removes the conical suction shoe area from the screen housing design. By extracting this problematic conical section, the invention eliminates the surface where granule adhesion and deposits occur, while maintaining effective granule collection through alternative outlet opening arrangements in the cylindrical housing.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If a conventional screen housing design with suction shoe is used, then screening function is achieved, but the overall height of the device becomes large, requiring significant installation space

Engineering Contradiction:
Improvescreening functionVSAvoidoverall height of device
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The patent eliminates the conical suction shoe section from the screen housing, which directly reduces the overall height of the device. The screening function is maintained through the screen arrangement and alternative granule collection mechanism at the outlet opening in the cylindrical housing, achieving compact dimensions without sacrificing performance.

Inventive Principle:
Principle #2Taking out (Extraction)

3Productivity

If the outlet opening is arranged in the base of the screen, then granules can be discharged, but adhesion in the conical area restricts fast product transfer

Engineering Contradiction:
Improveproduct transfer speedVSAvoidadhesion in conical area
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent removes the conical suction shoe area that causes adhesion problems. The outlet opening is arranged in the cylindrical side wall of the screen housing, allowing granules to be discharged without passing through a conical section, thereby eliminating adhesion-related transfer restrictions and improving product transfer speed.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the spatial arrangement by positioning the outlet opening in the cylindrical side wall rather than in the base of the screen. This dimensional repositioning allows granule discharge to occur in a different location that avoids the adhesion-prone conical area, enabling faster product transfer.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 compact design reduces the overall height of the screening device, prevents adhesion and deposits, and ensures fast and effective product transfer, making it easier to integrate into existing process plants.

Implementation Method 1

an inlet opening for transfer air arranged on the screen housing... ensures fast and effective product transfer

Methodology Applied
Scientific EffectFluid flow:

Data Source

PatentEP3691799B1Filter device
Publication Date: 2025.06.04 GLATT MASCHINEN UND APPARATEBAU AG
  • EP3691799B1 patent drawingFigure 1
  • EP3691799B1 patent drawingFigure 2
  • EP3691799B1 patent drawingFigure 3~4

AI summary

The invention relates to a filter device (104, 204, 304) for filtering granules, in particular moist and/or dry granules, comprising a filter housing (108, 208, 308) having a base (119, 219, 319), a cover (106, 206, 306) and a side wall (107, 207, 307), an inlet for the granulate arranged on the filter housing, an outlet (110, 210, 310) for the sieved granulate arranged on the filter housing (108, 208, 308), a sieve (111, 211, 311) arranged in the sieve housing (108, 208, 308) and an inlet (116, 216, 316) for transfer air, wherein the outlet (110, 210, 310) for the sieved granulate, which is arranged on the sieve housing (108, 208, 308) is arranged on the side wall (107, 207, 307) of the sieve housing (108, 208, 308)