Pipe Spray Head With Centering for Homogeneous 360° Coating
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Solution Overview
Problem
Existing pipe restoration systems struggle with limited applicability, non-optimal mixing, and inability to achieve homogeneous coating inside pipes due to lack of guidance and flexible joints, especially for pipes larger than 63 mm in diameter.
Innovation Solution
A spray head with a DC motor, flexible supply pipe, and centering elements, along with a flexible joint and adjustable rotation, allows for continuous dosing and 360° spraying up to 60-70 meters, adapting to pipe irregularities and ensuring homogeneous coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a spray applicator is used without guidance elements, then the device can be simple in structure, but it cannot be guided along the pipe and is limited to very short pipe lengths
Solution Approach 1:
The spray head is divided into functional segments: a DC motor segment for rotation control, a spray disc segment for coating application, and a centering element segment for guidance. This segmentation allows each part to perform its specific function while working together to enable the head to navigate and coat long pipes effectively.
Solution Approach 2:
The spray head incorporates a DC motor that enables dynamic rotation of the spray disc, allowing the system to adapt to pipe geometry and maintain optimal spraying orientation. The centering elements provide dynamic adjustment to maintain proper positioning within the pipe during movement, enabling operation over extended pipe lengths.
2Adaptability or versatility
If a rigid spray gun is used, then the application can be simple, but it cannot adapt to pipe irregularities and direction changes
Solution Approach 1:
The spray head employs a DC motor that enables dynamic rotation and adjustment of the spray disc orientation. This dynamic capability allows the system to adapt to various pipe irregularities, bends, and direction changes while maintaining effective coating application, resolving the contradiction between adaptability and ease of operation.
3Productivity
If the spray disc rotates at high speed, then the spraying coverage increases, but the coating homogeneity decreases due to centrifugal force patterns
Solution Approach 1:
The DC motor provides precise dynamic control of the spray disc rotation speed and direction. This control capability allows optimization of rotation parameters to achieve both adequate spraying coverage and uniform coating distribution, preventing centrifugal force patterns while maintaining productivity.
Solution Approach 2:
The system incorporates control means that can monitor and adjust the rotation parameters of the spray disc. This feedback mechanism enables maintenance of optimal rotation speed for homogeneous coating while ensuring sufficient coverage, resolving the contradiction between productivity and manufacturing precision.
4Manufacturing precision
If the spray head is designed for 360° coverage, then the coating completeness improves, but the device complexity increases
Solution Approach 1:
The spray head combines multiple functions into a single integrated device: the DC motor provides rotation for 360° coverage, the spray disc delivers the coating material, and the centering elements ensure proper positioning. This merging of functions achieves complete coating coverage while avoiding the complexity of multiple separate systems.
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
Enables efficient, homogeneous application of mixed fluids like epoxy resin and catalyst inside large pipes, overcoming limitations of existing systems by providing guidance and flexibility, ensuring a smooth finish and preventing deposition in imperfections.
Implementation Method 1
a direct current (DC) electric motor whose shaft is connected to a spray disc
Implementation Method 2
a section covered by a spring, which holds flexible arcuate elements that are also fixed to the protection casing, so that a flexible joint is established
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a spray head for spraying a fluid product such as paint or varnish or another mixture for use preferably inside a pipeline featuring centring and articulation means for its movement in said environment. Versions are provided in which the spraying disc can change the spraying direction. The invention is intended for the sanitation industry and for manufacturers of equipment for sprinkling fluids such as resins in enclosed spaces.