Cutting Fluid Shavings Separation with Turret and Rotary Valve

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Solution Overview

Problem

Current devices for separating metal shavings from cutting fluid in machine tools are bulky, heavy, and complex to use, making them inefficient and difficult to transport, as they require thick walls and vacuum systems to manage the separation process effectively.

Innovation Solution

A device with a turret that creates a depression using a pump to suck in the mixture of cutting fluid and shavings, featuring inclined plates to intercept fluid droplets and a rotary valve to separate the fluid from the shavings, allowing for gravity-driven separation and subsequent filtration, reducing the need for thick walls and vacuum systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If thick walls and vacuum systems are used to create depression for separation, then separation effectiveness is improved, but device weight and bulk increase

Engineering Contradiction:
Improveseparation effectivenessVSAvoiddevice weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The device separates the depression creation function into a portable pump unit that can be detached from the separation chamber. This segmentation allows the heavy vacuum system to be removed when not in use, significantly reducing device weight and bulk while maintaining separation effectiveness when the pump is connected.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention transitions from a static enclosed vacuum system to a dynamic setup where the pump can be connected and disconnected as needed. The separation chamber can operate in different states (with or without depression), allowing flexibility in operation and reducing the need for permanently thick walls and constant vacuum maintenance.

Inventive Principle:
Principle #15Dynamics

2Reliability

If thick walls and enclosed structures are used to maintain depression, then separation reliability is improved, but device complexity and bulk increase

Engineering Contradiction:
Improveseparation reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The device is divided into separate functional modules: a separation chamber and a portable pump unit. This segmentation simplifies each component's design and reduces overall complexity, as the chamber doesn't need permanent vacuum sealing features when the pump is disconnected.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The vacuum system (pump) is extracted from the main separation device body, allowing the chamber to be a simpler, open structure that only requires sealing at the pump connection interface. This eliminates the need for complex enclosed vacuum chambers with multiple sealing points.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of manufacture

If manual separation with sieves is used, then no special equipment is needed, but separation time and labor increase

Engineering Contradiction:
Improveequipment simplicityVSAvoidseparation time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The device enables self-service separation by allowing operators to easily connect the portable pump to the separation chamber and perform automated fluid-shaving separation. This eliminates the need for manual sieving while keeping the device simple enough for operators to use without specialized training or assistance.

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

The device is lighter, easier to use, and more efficient, allowing for effective separation of cutting fluid and shavings, with the fluid being reusable and shavings collected as recyclable material, while maintaining a simple and cost-effective design.

Implementation Method 1

A pump acts on this turret, creating a depression within itself which sucks up this mixture

Methodology Applied
Scientific EffectVacuum: Vacuum

Implementation Method 2

creating a suitable depression within itself. Therefore, it is evident that the enclosure which encloses the mixture, during this operation, must be kept in depression

Methodology Applied
Scientific EffectSuction: Suction

Implementation Method 3

within the aforesaid turret a plurality of inclined plates being present, arranged above the point of inlet of the mixture sucked into the turret, which is flooded by said mixture, intercepting the cutting fluid in the form of drops

Methodology Applied
Scientific EffectGravitation: Gravitation

Implementation Method 4

On the bottom of the turret there is a rotary valve, which has a plurality of radial septa into which the mixture of cutting fluid and shavings enters, which is subsequently made to fall into an underlying device for the complete separation of the two elements

Methodology Applied
Scientific EffectSedimentation: Sedimentation

Data Source

PatentEP3771517B1Device adapted to the separation of shavings contained in a cutting fluid used in machine tools
Publication Date: 2023.06.28 CARRARO ALBERTO
  • EP3771517B1 patent drawingFigure 1~2
  • EP3771517B1 patent drawingFigure 3
  • EP3771517B1 patent drawingFigure 4

AI summary

A device adapted to the separation of shavings contained in a cutting fluid used in machine tools is involved, characterized in that it has a first suction stage, consisting of a turret (1), into which a mixture of air and cutting fluid containing metal shavings to be treated converges. A pump (2) acts on said turret (1), which pump sucks up this mixture, creating a depression inside said turret (1), within the aforesaid turret a plurality of inclined plates (24) is present, arranged above the point of inlet of the mixture into the turret, which are flooded by said mixture, intercepting it and separating from the air the cutting fluid mixed with shavings that falls onto the bottom of the turret (1), where there is a rotary valve (3), which has a plurality of radial partitions (32), into which the mixture of cutting fluid and shavings enters, which mixture is made to fall into an underlying device for the complete separation of said two elements.