Spray Gun Nozzle Assembly Quick-Connect Coupler Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing spray gun nozzle assemblies lack efficient connections with spray gun bodies, leading to difficulties in cleaning and replacing nozzle components, which increases maintenance time and costs.
Innovation Solution
A liquid spray gun nozzle assembly with a quick-connect coupler and a rotatable locking ring that facilitates easy attachment and detachment, allowing for reduced cleanup and potential tool-free replacement, and incorporating sealing features to control air flow zones for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional nozzle assemblies are used with spray gun bodies, then the connection is secure, but cleaning and replacement of nozzle components becomes difficult and time-consuming
Solution Approach 1:
The nozzle assembly is divided into separate modular components including the nozzle body, face, and cap that can be independently removed and cleaned. This segmentation allows each component to be accessed and cleaned separately without disassembling the entire spray gun, significantly reducing maintenance time while maintaining secure connections during operation.
Solution Approach 2:
The connection mechanism incorporates dynamic elements such as threaded fasteners and locking features that allow for quick assembly and disassembly. The design enables the nozzle assembly to transition between a securely locked state during operation and an easily removable state for maintenance, optimizing both operational security and maintenance efficiency.
2Ease of operation
If traditional connections are used between nozzle assemblies and spray gun bodies, then the structure is simple, but tool-free replacement is not achievable
Solution Approach 1:
The connection mechanism is designed to be self-servicing through features such as hand-tightenable threaded fasteners and self-locking elements that eliminate the need for external tools for both assembly and disassembly. The nozzle assembly can be quickly attached and detached by hand, enabling tool-free replacement while maintaining a relatively simple overall structure.
3Ease of repair
If removable nozzle assemblies are implemented, then cleaning becomes easier, but connection reliability may be compromised
Solution Approach 1:
The connection mechanism incorporates pre-designed sealing elements and locking features that ensure reliable connections before use. Threaded fasteners with built-in sealing surfaces and locking elements provide predetermined connection reliability, allowing the nozzle assembly to be easily removed for cleaning while maintaining secure and leak-free connections during operation.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A liquid spray gun nozzle assembly is disclosed comprising a coating liquid inlet portion comprising a liquid connector for connection to an external liquid source; a coating liquid outlet portion comprising a liquid nozzle for spraying a coating liquid fed into the nozzle assembly through the coating liquid inlet portion, the liquid nozzle being disposed along a spray axis; a coating liquid flow path fluidly connecting the coating liquid inlet portion to the liquid nozzle; and a spray gun connection portion opposite the coating liquid outlet portion adapted to connect the liquid spray gun nozzle assembly to a compatible liquid spray gun body. The spray gun connection portion comprises a nozzle assembly sealing surface adapted to seal the liquid spray gun nozzle assembly to the compatible liquid spray gun body, the nozzle assembly sealing surface comprising first and second sealing members that are each circular and concentric with one another.