Floating Seal Ring Grooves for Lubrication on Inclined Ground
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Solution Overview
Problem
Conventional floating seal devices fail to adequately supply lubricating oil to sliding surfaces when operated on inclined or uneven ground, leading to insufficient lubrication, especially at high rotational speeds.
Innovation Solution
The floating seal device incorporates a rotating side seal ring with recessed portions, such as spiral grooves, that guide and supply fluid between sliding surfaces by centrifugal force, ensuring consistent lubrication even when tilted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the floating seal device is operated on inclined or uneven ground, then the device can adapt to various operating conditions, but the lubricating oil shifts toward the inclined side and cannot be sufficiently supplied to the sliding surfaces
Solution Approach 1:
The recessed portions are pre-formed on the inner peripheral surface of the rotating side seal ring to store lubricating oil in advance. When the device tilts or rotates at high speed, the recessed portions ensure lubricating oil is immediately available at the sliding surfaces through centrifugal force, eliminating the delay caused by oil shifting.
Solution Approach 2:
The recessed portions are strategically positioned on the inner peripheral surface of the rotating side seal ring to create localized oil storage zones. This local modification ensures that lubricating oil is concentrated where it is most needed - at the sliding surfaces - regardless of the device's orientation or rotation speed.
2Speed
If the rotating side seal ring rotates at high speed, then the sealing performance is maintained, but the lubricating oil cannot be sufficiently supplied to the sliding surfaces due to centrifugal effects
Solution Approach 1:
The invention converts the harmful centrifugal force that causes lubricating oil to shift away from sliding surfaces into a beneficial force. By forming recessed portions on the inner peripheral surface, the centrifugal force generated during high-speed rotation actively directs lubricating oil from the recessed portions toward the sliding surfaces, ensuring adequate lubrication even at high speeds.
3Device complexity
If the sliding surfaces are exposed above the oil surface, then the seal structure is simplified, but poor lubrication occurs leading to potential seizure
Solution Approach 1:
The recessed portions are pre-formed on the inner peripheral surface to store lubricating oil in advance, ensuring that even when sliding surfaces are exposed above the bulk oil level, the recessed portions provide immediate lubrication through centrifugal force during rotation.
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 design effectively prevents poor lubrication by ensuring lubricating oil is consistently supplied to exposed sliding surfaces, preventing seizure and enhancing the sealing performance of the device.
Implementation Method 1
the rotating side seal ring has an inner peripheral surface provided with at least one recessed portion extending in an opposite direction to a direction of rotation of the rotating side seal ring toward a sliding surface side end. According to the aforesaid feature of the present invention, as the rotating side seal ring rotates, the fluid contained in the interior of the floating seal device is guided between the sliding surfaces by the recessed portion, allowing the fluid to be supplied between the sliding surfaces.
Data Source
AI summary
Disclosed is a floating seal device capable of supplying a lubricating oil between sliding surfaces. A rotating side seal ring has an inner peripheral surface provided with a recessed portion extending toward an end on the side of a sliding surface in an opposite direction to a direction of rotation of the rotating side seal ring.