Drill Collar Dust Extractor With Venturi Airflow and Modular Fit
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Solution Overview
Problem
Existing suction cup dust extractors for drills lack efficient debris clearance and adaptability to different nozzle sizes, leading to incomplete dust collection and limited usability with various vacuum sources.
Innovation Solution
A suction cup dust extractor design featuring a housing with a drill collar, a venturi effect mechanism for enhanced air flow, and a detachable collar with a locking mechanism for compatibility with various nozzle sizes, ensuring effective debris clearance and secure attachment to work pieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed collar design is used, then the structure is simple, but it cannot adapt to different nozzle sizes and vacuum sources
Solution Approach 1:
The collar is designed to be detachable rather than fixed, allowing it to be removed and replaced with different sized collars to match different vacuum source nozzles. This dynamic configuration enables adaptability without requiring a complex adjustable mechanism, as each collar is a simple standalone component.
Solution Approach 2:
The dust extractor is divided into separate modular components: the main housing, the collar, and the suction cup assembly. This segmentation allows the collar to be independently selected and replaced based on the specific vacuum source being used, providing versatility while keeping each individual component simple in design.
2Productivity
If a standard suction cup design is used, then the manufacturing is simple, but the debris clearance efficiency is insufficient
Solution Approach 1:
A venturi effect mechanism is incorporated into the housing to enhance the suction force and improve debris clearance efficiency. The venturi creates a pressure differential that draws debris more effectively toward the collection chamber, providing improved productivity while adding only moderate structural complexity through the inclusion of the venturi geometry.
3Adaptability or versatility
If the collar is permanently attached, then the structure is stable, but it cannot be adapted to different vacuum sources
Solution Approach 1:
The collar attachment system is designed to be dynamically configurable - securely attached during operation to maintain stability, but easily removable when needed to change the collar size. This allows the system to switch between a stable fixed state and an adaptable removable state, satisfying both requirements.
4Adaptability or versatility
If a single collar size is used, then the device complexity is low, but the usability with various nozzle sizes is limited
Solution Approach 1:
The collar system is segmented into multiple independent collar components of different sizes, each designed to fit specific nozzle dimensions. This allows the user to select the appropriate collar for each vacuum source without requiring a complex adjustable mechanism, as each collar is a simple, dedicated component optimized for its specific size.
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 design achieves improved debris clearance and adaptability by utilizing a venturi effect for efficient dust collection and a detachable collar system that fits different nozzle sizes, ensuring reliable operation with various vacuum sources and work pieces.
Implementation Method 1
A suction cup dust extractor design featuring a housing with a drill collar, a venturi effect mechanism for enhanced air flow
Data Source
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AI summary
A suction cup dust extractor for a drill comprising: a housing (10); a drill collar (12) attached to the housing (10), having a drill passage (18) formed through it; a recess (38) formed by the walls (50, 52) of the housing (10) having an opening and which, in use, locates against a work piece to create a chamber; an aperture (24) located on the housing (10) through which air can pass; at least one first air passage (32) formed within the housing (10) which enables air to pass from the drill passage (18) to the aperture (24); and at least one second air passage (36) formed within the housing (10) which enables air to pass from the recess (38) to the aperture (24); wherein the collar comprises: an inner wall (500) which at least partially surrounds the drill passage (18); an outer wall (502) which at least partially surrounds the inner wall (500); the inner wall (500) and outer wall (502) forming a wall passage (504) in between them which connects to the at least one first air passage (32) to allow air to pass from the wall passage to the at least one first air passage (32); the depth of at least part of the inner wall (500) being less than that of the outer wall (502) to allow air to flow around the base (506; 900,902) of the inner wall from the drill passage (18) to the wall passage (504); characterised in that there is provided a cover (600) which attaches to the outer wall to enclose the lower side of the wall passage (504).