Spray Gun Injection Port with Blind Bore for Foam Application
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current spray guns used for injecting polyurethane foam underneath concrete are bulky, require excessive components, and are difficult to assemble and disassemble, leading to increased downtime, reduced productivity, and higher repair costs.
Innovation Solution
A redesigned spray gun with a fluid housing featuring a main body with multiple inlets for pressurized air and polyurethane foam components, a mix block with internal threads, and a lever for adjustable positions, along with a swivel connector and injection port with specific internal and external passages and threads, allowing for easier assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current spray gun design is used, then polyurethane foam can be injected underneath concrete, but the spray gun is bulky and requires excessive components
Solution Approach 1:
The patent combines multiple separate components (fluid housing, mix block, valve block, injection port, swivel connector) into an integrated spray gun assembly where parts are releasably coupled together. This merging approach maintains functional versatility while reducing the number of separately stored and handled components, directly addressing the contradiction between adaptability and device complexity
Solution Approach 2:
The spray gun design incorporates multiple inlets (first inlet for pressurized air, second inlet for first polyurethane foam component, third inlet for second polyurethane foam component) and a lever with multiple positions (OFF, AIR, FOAM) that enable the single device to perform multiple functions: injecting foam, purging with air, and transitioning between modes. This multi-functionality provides versatility without requiring separate specialized tools
2Reliability
If current spray gun design is used, then polyurethane foam injection function is provided, but the spray gun is difficult to assemble and disassemble
Solution Approach 1:
The spray gun is divided into distinct segmented components (fluid housing, mix block, valve block, injection port, swivel connector) that are releasably coupled together through threaded connections and locking mechanisms. This segmentation allows each component to be manufactured separately with standardized interfaces, making assembly and disassembly straightforward while maintaining reliable functional performance when connected
Solution Approach 2:
The spray gun incorporates a lever mechanism that is adjustable to different positions (OFF, AIR, FOAM) and a swivel connector that allows rotational movement. These dynamic elements enable easy reconfiguration and adaptation of the assembly without requiring complex fastening or disassembly procedures, improving ease of manufacture while maintaining functional reliability
3Productivity
If current spray gun design is used, then complete spray function is provided, but excessive downtime occurs
Solution Approach 1:
The spray gun design allows components to be prepared and positioned in advance with threaded connections and locking mechanisms that enable quick coupling. The lever can be pre-positioned to the desired setting before operation begins. This preliminary preparation eliminates time-consuming assembly adjustments during operation, reducing downtime and improving productivity
Solution Approach 2:
The adjustable lever mechanism and swivel connector provide dynamic reconfiguration capability that allows rapid switching between operational modes (OFF, AIR, FOAM) and easy repositioning without requiring shutdown or complex adjustments. This dynamic design minimizes operational downtime and maintains high productivity throughout the work cycle
4Reliability
If current spray gun design is used, then spray function is provided, but high repair costs result
Solution Approach 1:
The segmented design with releasably coupled components (fluid housing, mix block, valve block, injection port, swivel connector) allows individual parts to be easily removed and replaced if damaged. This modular approach reduces repair costs by enabling replacement of only the specific faulty component rather than the entire spray gun, while maintaining operational capability through quick reassembly
Solution Approach 2:
The standardized threaded connections and locking mechanisms are designed to be pre-configured for easy disassembly and reassembly. This preliminary design consideration for maintenance accessibility reduces the time and skill required for repairs, lowering repair costs while ensuring reliable operational capability is quickly restored
Data Source
AI summary
An injection port for a spray gun includes a first end and a second end disposed opposite the first end along a longitudinal axis. The injection port also includes an interior passage extending between the first end and the second end along the longitudinal axis, and a plurality of blind bores disposed at the first end, each blind bore extending perpendicular to the longitudinal axis.