Percussive Air Tool Dust Extraction With Water Filtration Coupling

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Solution Overview

Problem

Existing vacuum dust extraction systems for percussive air tools are inefficient due to mechanical filtration failures and compatibility issues with different air tool types, leading to incomplete dust capture and frequent clogging.

Innovation Solution

A vacuum dust extraction apparatus featuring a snorkel and dust bellows with a universal coupling arrangement and an air-powered water filtration industrial vacuum, which includes a tubular coupler for secure attachment to various air tools and a water filtration unit to efficiently remove dust from the airflow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mechanical filtration using paper cartridges or filter elements is used, then dust particles can be filtered, but the filters become quickly clogged by small dust particles and fail to filter out fine particles effectively

Engineering Contradiction:

Improvefiltration effectivenessVSAvoidfilter clogging and replacement frequency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces mechanical filtration systems (paper cartridges and filter elements) with a water filtration system. The water acts as the filtering medium, allowing dust particles to be captured through water-dust interaction rather than mechanical filtration. This substitution eliminates the clogging problem inherent in mechanical filters while maintaining effective dust particle separation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the physical state and properties of the filtration medium from solid (paper/fabric filters) to liquid (water). This parameter change allows the system to handle fine dust particles more effectively and prevents the clogging issue that occurs with mechanical filters, as water can accommodate and suspend fine particles without blocking flow.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If a dust containment hood is designed for one type of air tool, then it works effectively with that specific tool, but it does not work with other air tools of different types and ratings

Engineering Contradiction:

Improvedust capture effectivenessVSAvoidcompatibility with different air tool types

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent designs the water filtration vacuum system with universal adaptability to work with multiple types of percussive air tools including chisel hammers, rivet busters, and demolition tools. The system uses a standardized adapter mechanism that can accommodate different tool interfaces, allowing a single vacuum design to serve multiple functions across various air tool types and ratings.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent employs modular adapter components that can be segmented and configured to match different air tool interfaces. This segmentation allows the dust containment hood to be adapted to various tool types by selecting appropriate adapter segments, maintaining effective dust capture while providing versatility across different tool platforms.

Inventive Principle:

Principle #1Segmentation

3Productivity

If industrial vacuums are used with standard mechanical filters, then they can operate continuously, but they fail to adequately capture small dust particles generated by percussive air tools

Engineering Contradiction:

Improvecontinuous operation capabilityVSAvoiddust particle capture precision

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent replaces the mechanical filtration system with a water-based filtration system that maintains continuous operation capability while significantly improving dust particle capture precision. The water filtration mechanism effectively captures fine dust particles that mechanical filters miss, without sacrificing the continuous operational productivity of industrial vacuums.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 apparatus effectively captures dust from percussive air tools by providing adequate suction and efficient filtration, ensuring compatibility with a wide range of air tools and preventing clogging, thus improving dust containment and removal efficiency.

Implementation Method 1

a water filtration unit through which the airstream must flow before being admitted into the canister and exhausted to atmosphere through the vacuum unit

Methodology Applied

Scientific EffectWater filtration: Absorption (physical)

Implementation Method 2

a vacuum unit mounted on the lid of the canister for creating a vacuum-induced airstream through the suction hose and canister

Methodology Applied

Scientific EffectVacuum suction: Suction

Data Source

PatentUS11597046B2Vacuum dust extraction apparatus for a percussive air tool

Publication Date: 2023.03.07 GAW INC

AI summary

A vacuum dust extraction system includes a snorkel coupled to the implement end of an air tool, a dust bellows surrounding the air tool's implement and fastened to the outboard end of the snorkel, a pneumatically powered water filtration industrial vacuum, and a suction hose coupling the snorkel to the vacuum. The apparatus features an improved coupling arrangement for attaching the snorkel to the barrel of the tool driver that permits the apparatus to work with a wide assortment of air tools.