Dryer Fabric Cleaning Head Drainage With Moving Air-Water Separation

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Solution Overview

Problem

Existing drainage devices for cleaning heads in paper manufacturing plants face issues with clogging due to dirt particles and wastewater settling on walls, requiring manual cleaning and disrupting the drainage process.

Innovation Solution

A drainage device with an air-water separation container connected to the cleaning head, allowing for air and wastewater separation close to the cleaning head, preventing particles from drying out and clogging, and featuring a tubular body with propellant inlets to generate acceleration and helical flow, ensuring continuous wetting and efficient transport of debris.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a stationary collecting container is used across the drying wire, then the drainage structure is simple, but the cleaning head must traverse a long distance causing dirt to settle and clog the device

Engineering Contradiction:
Improvedrainage structureVSAvoiddrainage function
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent applies the dynamics principle by making the air-water separation container movable rather than stationary. The container is connected to the cleaning head via a tubular body and moves together with the cleaning head transversely across the drying wire. This dynamic configuration ensures that the separation container is always positioned close to the cleaning head, maintaining effective drainage function without requiring a long traversal path that would cause clogging.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies the nested doll principle by integrating the air-water separation container within the movable assembly of the cleaning head system. The separation container is connected to the cleaning head and moves together with it, effectively nesting the separation function within the cleaning operation. This integration ensures that the separation container remains close to the source of dirt and water without requiring a separate stationary structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Device complexity

If the air-water separation container is stationary, then the structure is simpler, but the cleaning head must travel a long distance causing dirt particles to dry out and cake

Engineering Contradiction:
Improveseparation container structureVSAvoiddirt particle caking
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent applies the dynamics principle by making the air-water separation container movable rather than stationary. The container is connected to the cleaning head via a tubular body and moves together with the cleaning head transversely across the drying wire. This dynamic configuration ensures that the separation container is always positioned close to the cleaning head, maintaining effective drainage function without requiring a long traversal path that would cause clogging.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies the skipping principle by enabling the separation container to rapidly move with the cleaning head across the drying wire. This rapid movement allows the system to complete the drainage and separation process quickly, preventing dirt particles from having time to dry out and cake on the container walls during the traversal.

Inventive Principle:
Principle #21Skipping (Rushing through)

3Device complexity

If the cleaning head moves across a long distance to reach the drainage container, then the drainage container can be stationary, but the drainage quality becomes non-uniform

Engineering Contradiction:
Improvedrainage container positioningVSAvoiddrainage quality uniformity
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The patent applies the dynamics principle by making the air-water separation container movable rather than stationary. The container is connected to the cleaning head via a tubular body and moves together with the cleaning head transversely across the drying wire. This dynamic configuration ensures that the separation container is always positioned close to the cleaning head, maintaining effective drainage function without requiring a long traversal path that would cause clogging.

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 ensures uninterrupted and high-quality drainage by preventing clogging, reducing water consumption, and allowing for continuous operation of the paper manufacturing process without downtime, as the air-water separation container and tubular body design effectively manage the separation and transport of dirt particles and wastewater.

Implementation Method 1

an air-water separation container which has an inlet opening for the dirt particles and the wastewater from the cleaning head, an air outlet and a waste water outlet

Methodology Applied
Scientific EffectAir-water separation: Density Gradient

Implementation Method 2

The tubular body has at least one propellant inlet (13) for a propellant, in particular for compressed air or pressurized water, which is set up to generate an acceleration of the dirt particles and wastewater

Methodology Applied
Scientific EffectAcceleration by propellant injection: Jet

Implementation Method 3

The tubular body has at least one propellant inlet (13) for a propellant, in particular for compressed air or pressurized water, which is set up to generate an acceleration of the dirt particles and wastewater and/or a helical flow through the tubular body

Methodology Applied
Scientific EffectHelical flow: Vortex Ring

Data Source

PatentEP2407253B1Drain device for a dryer fabric cleaning head
Publication Date: 2015.09.09 PAPRIMA IND
  • EP2407253B1 patent drawingFigure 1~2
  • EP2407253B1 patent drawingFigure 3~4
  • EP2407253B1 patent drawingFigure 5

AI summary

Drainage device (1) for dirt particles and waste water (74) from a cleaning head (50), the cleaning head (50) being movable transversely to the drying screen (60), comprising an air-water separating tank (20) which has an inlet opening (25) for the dirt particles and the waste water (74) from the cleaning head (50), an air outlet (27) and a waste water outlet (26), and wherein the air-water separating tank (20) is connected to the cleaning head (50), so that the air-water separating tank (20) can be moved together with the cleaning head (50) transversely to the drying screen (60), and a method for using the drainage device (1).