Textile Intake System Sealed Waste Conveyance

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Solution Overview

Problem

Current intake systems for textile machines face challenges in maintaining constant negative pressure and efficient filtration, leading to suboptimal yarn quality and increased operational costs due to manual and labor-intensive filter cleaning, as well as the need for redundant systems and increased energy consumption as filters clog over time.

Innovation Solution

The intake system employs sealed conveying means, such as rotary valves or spiral screws, to maintain filtration devices under constant negative pressure, ensuring continuous separation and removal of waste without clogging, and incorporates a cyclone device for efficient air flow separation, allowing for automatic and continuous cleaning without interrupting machine operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If metal inertial-type filters are used to suction dust and waste, then filtration efficiency is high initially, but loss of load increases and power consumption increases as dust accumulates on the filter

Engineering Contradiction:
Improvefiltration efficiencyVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic reverse flushing of the filter using a cyclone device that periodically reverses the air flow direction. This periodic action removes accumulated dust from the filter screen, restoring filtration efficiency and reducing power consumption without requiring manual intervention or system shutdown.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The filter cleaning system is self-service, automatically removing dust accumulation through the cyclone-generated reverse flow. The system monitors and executes cleaning cycles autonomously, eliminating the need for manual cleaning operations and maintaining consistent filtration performance without external intervention.

Inventive Principle:
Principle #25Self-service

2Ease of manufacture

If manual filter cleaning is performed, then filter maintenance is achieved, but labor costs increase and machine operation may be interrupted

Engineering Contradiction:
Improvefilter maintenanceVSAvoidmachine operation continuity
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The system performs self-maintenance through automatic reverse flushing of the filter using cyclone-generated reverse air flow. This eliminates manual cleaning operations entirely, reducing labor costs and preventing interruptions to machine operation, as the cleaning occurs automatically during normal operation or without production impact.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The filter cleaning operation is integrated into the continuous operation of the machine. The reverse flushing can occur during idle periods or in a manner that does not interrupt the spinning process, ensuring continuous productive action while maintaining filter performance without stopping the machine.

Inventive Principle:
Principle #20Continuity of useful action

3Reliability

If redundant filtration systems are installed to maintain constant negative pressure, then operational reliability improves, but device complexity and cost increase

Engineering Contradiction:
Improveconstant negative pressureVSAvoidsystem redundancy
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Instead of using redundant filter systems, the patent employs periodic reverse flushing of the single filter to maintain its performance. This periodic regeneration maintains constant negative pressure and filtration reliability without requiring duplicate filtration systems, thereby reducing device complexity and cost while achieving the same reliability outcome.

Inventive Principle:
Principle #19Periodic action

4Device complexity

If filter cleaning is delayed or performed manually, then system simplicity is maintained, but yarn quality deteriorates due to ununiform negative pressure

Engineering Contradiction:
Improvesystem simplicityVSAvoidyarn quality
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The system automatically monitors and cleans the filter through reverse flushing, maintaining uniform negative pressure without manual intervention. This self-service mechanism ensures consistent yarn quality by preventing pressure variations that would occur with delayed or manual cleaning, while adding minimal complexity to the overall system.

Inventive Principle:
Principle #25Self-service

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

This solution ensures constant operating conditions and optimal yarn quality by maintaining filter cleanliness, reducing labor costs, energy consumption, and eliminating the need for redundant systems, resulting in stable negative pressure and power usage over time.

Implementation Method 1

at least one suction fan (12) to create, by means of a negative pressure, an air intake flow containing spinning and/or winding waste (14)

Methodology Applied
Scientific EffectNegative pressure: Pressure Gradient

Implementation Method 2

The cyclone device (96) receives in a tangential direction T-T a flow of air containing waste (14) and separates the waste (14) from the flow of air

Methodology Applied
Scientific EffectCentrifugal separation: Centrifugal Separation

Data Source

PatentEP3167950B1Intake system for a spinning machine or a cone-winding machine and spinning machine or cone-winding machine comprising said intake system
Publication Date: 2022.09.07 SAVIO MACCHINE TESSILI SPA
  • EP3167950B1 patent drawingFigure 1~3
  • EP3167950B1 patent drawingFigure 3a
  • EP3167950B1 patent drawingFigure 4~6

AI summary

An intake system (4) for textile machine (8), such as an open-end type rotor spinning machine, a ring type spinning machine, an air-jet type spinning machine or a winding machine, comprising - at least one suction fan (12) to create, by means of a depression, an air intake flow containing spinning and/or winding waste, such as dust, lint and the like, - at least one filtration device (16) for collecting said waste, fluidically connected to said suction fan (12), through at least one intake duct (20), and at least one waste feed duct (24) of at least one spinning and or/cone-winding unit (28), in correspondence of a feed mouth (32), - the filtration device (16) being suitable to perform the continuous separation of the waste from the air intake flow, and being provided with at least one outlet mouth (36) for the disposal of said waste, - wherein, in correspondence of said outlet mouth (36), the intake system (4) comprises sealed conveying means suitable to receive the waste from said outlet mouth (36) and to expel it through a discharge (44), maintaining fluid seal with the outlet mouth (36), so as to maintain the filtration device (16) for the collection of said waste (14) always under depression.