Single-Piece Sealing Device for Liquid Coating Rods
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Solution Overview
Problem
Existing sealing devices for liquid coating systems are prone to damage and leaks due to multiple parts that are difficult to assemble and cause paint accumulation and dry deposits, leading to system malfunctions.
Innovation Solution
A sealing device with a single-piece assembly comprising a synthetic material frame and gasket with an O-ring, designed to easily mount around the actuating rod, reducing the risk of deterioration and paint accumulation, and featuring a flat scraping gasket and elastic blocking ring for secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-part sealing device with metal frame and separate gaskets is used, then sealing function is achieved, but assembly complexity increases and risk of damage/leaks increases
Solution Approach 1:
The patent combines the metal frame, inner guide gasket, and lip seal into a single integrated sealing cartridge assembly. This merging of previously separate components into one unitary structure eliminates assembly complexity while maintaining the sealing function through the integrated design of all sealing elements working together as a single device.
2Reliability
If separate gaskets are mounted in metal frame, then sealing is achieved, but damage and leaks occur during assembly
Solution Approach 1:
The sealing components are merged into a pre-assembled cartridge where the inner guide gasket and lip seal are permanently positioned within the metal frame during manufacturing. This eliminates the need for field assembly of separate gaskets, preventing damage and leaks that occur during installation while maintaining sealing integrity through factory-controlled precision assembly.
3Reliability
If lip seal is pressed against rod by metal springs, then sealing function is achieved, but paint accumulates in hollow space forming dry deposits
Solution Approach 1:
The patent removes the hollow spring structure that created dead spaces for paint accumulation. Instead, the lip seal is pressed against the rod by a flattened spring configuration that eliminates enclosed cavities, allowing paint to flow freely without accumulating and forming dry deposits that harm system operation.
4Reliability
If multiple separate components are used, then sealing is achieved, but assembly time increases and productivity decreases
Solution Approach 1:
The sealing device is merged into a single cartridge assembly that replaces multiple separate components. This integration allows the entire sealing system to be installed as one unit, dramatically reducing assembly time and improving productivity while maintaining reliable sealing performance through the coordinated design of integrated sealing elements.
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 solution provides a reliable and easy-to-assemble sealing device that minimizes paint and lubricant leakage, reducing system downtime and improving operational efficiency by forming a unitary whole with reduced dead spaces for paint accumulation.
Implementation Method 1
a sealing gasket (450) made from a synthetic material comprising an O-ring (454) mounted around a lip (452) of the gasket (450) suitable for being pressed against the actuating rod (15)
Implementation Method 2
The sealing device (40) also comprises a flat scraping gasket (412) arranged on an inner side of the sealing device (40) and suitable for being compressed against the piston rod (15)
Implementation Method 3
The frame (402) comprises an outer peripheral groove (408) suitable for receiving an elastic ring (410), which rests against a rim (113) of the flange (11) situated on the side of the cavity (21)
Data Source
AI summary
A sealing device for a system for applying a liquid coating product comprises an inner conduit suitable for sealably surrounding an actuating rod of the application system, a frame and a sealing gasket made from a synthetic material comprising an O-ring mounted around a lip of the gasket suitable for being pressed against the actuating rod, the frame and the gasket forming a single-piece assembly suitable for being mounted in a housing of the application system.