Pressure Released Wiper Assembly with Filter for Sealing Arrangement
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Solution Overview
Problem
Existing sealing arrangements in industrial applications, particularly in hydraulic and pneumatic systems, face challenges in maintaining a clean lubrication film due to contamination, leading to premature seal damage and equipment breakdown, with existing filter-seal combinations being complex and difficult to maintain or replace.
Innovation Solution
A pressure-released wiper assembly with a filter, comprising a main body with through holes and a filter holder, is freely placed in front of the sealing device, allowing for easy mounting and maintenance, with the filter being moulded, fastened, or integrated into the assembly, and designed for use in both rotating and reciprocal movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is integrated into the sealing unit as a combination product, then filtering capability is improved, but device complexity and maintenance difficulty increase
Solution Approach 1:
The invention separates the filter assembly from the sealing unit, creating two independent components: a filter assembly with filter element and holder, and a separate sealing unit. This segmentation allows each component to be optimized independently and replaced separately, reducing overall system complexity while maintaining filtering capability.
Solution Approach 2:
The filter element is extracted from the sealing unit and placed in a separate holder assembly that can be independently installed and maintained. The holder is positioned in front of the sealing device, allowing the filter to be removed and replaced without affecting the sealing unit, thus simplifying maintenance procedures.
2Reliability
If a filter is integrated into the sealing unit, then filtering capability is improved, but ease of repair and maintenance worsen
Solution Approach 1:
By dividing the system into separate filter assembly and sealing unit, the filter can be accessed and replaced independently through the holder, eliminating the need to disassemble the sealing unit for filter maintenance.
Solution Approach 2:
The holder is pre-positioned in front of the sealing device with the filter element already installed, allowing for quick filter replacement without requiring complex assembly disassembly. The holder design facilitates easy access to the filter element for maintenance personnel.
3Ease of operation
If the wiper assembly is freely placed in front of the sealing device, then ease of installation and maintenance is improved, but sealing effectiveness may worsen
Solution Approach 1:
The holder acts as an intermediary component positioned between the filter element and the sealing device. It provides a stable mounting structure that ensures proper positioning of the filter assembly in front of the sealing device, maintaining both ease of installation and effective sealing by ensuring correct spatial relationships.
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 effectively keeps the sealing arrangement clean, preventing contamination and extending the seal's lifespan by allowing for easy filter replacement without affecting the entire sealing system, while maintaining a thin lubrication film and preventing pressure buildup.
Implementation Method 1
The filter arrangement is placed in front of a sealing device and serves to keep the sealing and or steering arrangements clean by filtering the lubrication film
Implementation Method 2
A sealing arrangement in a system with movable parts will principally have a lubrication film
Data Source
Figure 1a~1f
Figure 1g
Figure 2a~2f
AI summary
The invention relates to a pressure released wiper assembly (1, 100) arranged to fit into a ring-shaped groove (15, 115) in a cylinder or at a piston rod wherein the pressure released wiper with a V- or U- shaped cross section comprising an opening (5, 105) in the axial direction to a potential contaminated side of the wiper assembly, a ring shaped base portion (11, 111), a ring disk shaped rear portion (12, 112), a lip portion (6, 106), one or more through openings (7, 107) from the opening (5, 105) through the rear portion (12, 112) to a gap formed between the cylinder wall (10) and the rod or piston outside the ring- shaped groove (11, 111) and one or more filters (3, 103) covering at least the one or more through openings to the potential contaminated side of the wiper assembly in the filter holder (2, 102).