Angled Nozzle Holder for Percussive Tool Dust Suppression
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Solution Overview
Problem
Conventional spray nozzles for percussive tools like jack hammers are inefficient in directing dust-suppressing mist accurately at the source of dust generation during drilling or cutting operations, leading to inadequate dust suppression.
Innovation Solution
A nozzle holder that secures a spray nozzle to a percussive tool at a fixed angle, using an arcuate wall with a concave recess to position the spray pattern continuously over the tool bit, and a fastener to maintain engagement and retention of the nozzle, ensuring precise dust suppression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional spray nozzles are used with percussive tools, then the nozzle structure is simple, but the dust suppression effectiveness is poor due to inaccurate spray direction
Solution Approach 1:
The patent introduces a nozzle holder as an intermediary component between the spray nozzle and the percussive tool. This holder includes an arcuate wall that fits around the tool and a pocket that positions the nozzle at a predetermined angle, ensuring the spray pattern continuously encapsulates the tool bit. The intermediary structure enables accurate spray direction without modifying the original nozzle or tool, thus improving dust suppression effectiveness while maintaining reasonable device complexity.
2Measurement precision
If the spray nozzle is positioned at a fixed angle using a nozzle holder, then the spray pattern accurately encapsulates the tool bit, but the device complexity increases
Solution Approach 1:
The nozzle holder is designed with a pre-formed pocket at a specific angle relative to the arcuate wall. This preliminary positioning structure ensures that when the nozzle is inserted into the pocket, it is automatically oriented at the correct angle to encapsulate the tool bit. The pre-configured geometry eliminates the need for complex adjustment mechanisms, achieving high spray positioning accuracy with minimal additional complexity.
3Reliability
If a fastener is added to secure the nozzle holder to the tool, then the engagement is maintained during operation, but the device complexity increases
Solution Approach 1:
The fastening system is segmented into simple, discrete fasteners that attach the nozzle holder to the percussive tool at specific locations. This segmentation allows the engagement stability to be achieved through multiple simple attachment points rather than a single complex fastening mechanism. Each fastener independently contributes to the overall stability, ensuring the nozzle holder remains securely attached during tool operation while keeping the added complexity manageable.
Data Source
AI summary
A spray dust compression system and method includes a nozzle holder for affixing a spray nozzle to a percussive tool. The nozzle holder includes an arcuate wall having a first surface engageable with the percussive tool, and a second surface opposing the first surface. A protruding body protrudes radially outwardly from the second surface relative to a longitudinal axis of the arcuate wall and a concave recess is formed in the protruding body and receives the spray nozzle. The concave recess is angled inwardly toward the longitudinal axis of the arcuate wall.