Hydraulic Filter End Disk Layout for Bypass and Clog Indication
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Solution Overview
Problem
Existing hydraulic filter systems lack the ability to automatically determine the degree of contamination of the filter material and do not have a mechanism for automatic bypass or contamination indication, leading to inefficient operation and potential system failure due to clogged filters.
Innovation Solution
A filter system with a cylindrical filter element, a filter housing, and a filter head that includes a switch and/or bypass valve with an anti-twist device, where the end plate has a passage opening surrounded by a sealing ring forming a free space for the anti-rotation device, allowing for optimal positioning and operation of the bypass valve or switch, and enabling the indication of filter contamination levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a switch or bypass valve is integrated into the filter head, then automatic contamination indication and emergency operation are enabled, but the risk of collision between the anti-twist device and end plate increases, limiting the stroke range
Solution Approach 1:
The anti-twist device is extracted from the end plate structure and relocated to the filter head. This separation allows the anti-twist device to move freely within the filter head's internal space without being constrained by the end plate, enabling sufficient stroke range for switch actuation and bypass valve operation while eliminating collision risks
Solution Approach 2:
The filter head serves as an intermediary structure that houses both the switch/bypass valve and the anti-twist device. This intermediary space allows the anti-twist device to guide the switch or bypass valve through their required stroke range without direct contact with the end plate, ensuring reliable operation
2Device complexity
If the anti-twist device is positioned close to the sealing ring for compact design, then space is saved, but the stroke range for switch actuation may be insufficient
Solution Approach 1:
The design utilizes the axial dimension within the filter head to provide sufficient stroke range for the anti-twist device. By allowing the anti-twist device to move axially within the filter head's internal space, the system achieves both compact radial dimensions and sufficient axial stroke range for switch actuation and bypass valve operation
Data Source
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AI summary
The invention relates to an end disk for filter material (10) for filtering a liquid, in particular a hydraulic oil, having a passage opening (11) for filtered liquid, which passage opening is surrounded by a sealing ring (20) for a connection piece, and having a cover (12) for the filter material (10). The invention is distinguished by the fact that the sealing ring (20) delimits a free space (13) for receiving a rotation prevention means (14), a switch (15) and/or a bypass valve (16) of a filter system (30). The invention also relates to a filter element, a filter system and a method for filtering liquid.