Floating Vent Valve Structure to Prevent Oil Spouting
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Solution Overview
Problem
Existing exhaust valves and filtration devices risk oil spouting from air vent holes due to operational states, posing a potential leakage issue.
Innovation Solution
An exhaust valve with a rod-like portion and dual stoppers, where the stoppers and rod form a moving member that floats on oil, allowing the valve to move between positions to close the air vent hole, preventing oil spouting. The first stopper is elastically deformable and the second stopper is designed to easily seal the vent hole, even with inclined oil surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a moving member is provided to be movable between closing and opening positions of the air vent hole, then air venting function is improved, but oil spouting risk increases
Solution Approach 1:
The exhaust valve is divided into two separate stoppers: a first stopper for closing the air vent hole and a second stopper for preventing oil spouting. This segmentation allows each component to perform its specific function independently, ensuring reliable air venting while preventing oil leakage.
Solution Approach 2:
The rod-like portion acts as an intermediary component that transmits the closing action from the first stopper to the second stopper. When the first stopper closes the air vent hole, the rod-like portion moves the second stopper to a position where it prevents oil from spouting through the closed hole.
2Ease of operation
If the moving member is designed to float on oil, then ease of operation is improved, but sealing reliability may worsen
Solution Approach 1:
The exhaust valve utilizes buoyancy (anti-weight principle) to float on the oil surface, which automatically positions the valve for operation. The buoyant force counteracts the weight of the valve components, enabling easy movement between opening and closing positions without requiring additional actuation mechanisms.
Solution Approach 2:
The second stopper is designed with a spherical shape that allows it to easily seal the circular air vent hole. The spherical geometry enables the stopper to conform to the hole opening and maintain reliable sealing through its curved surface contact.
3Object-affected harmful factors
If dual stoppers are provided, then oil spouting prevention is improved, but device complexity increases
Solution Approach 1:
The first stopper, second stopper, and rod-like portion are merged into a single integrated exhaust valve assembly. This combining of components achieves oil spouting prevention through the second stopper while maintaining a relatively simple overall structure that operates as one unified movable unit.
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
Prevents oil from spouting from the air vent hole effectively, ensuring reliable sealing and preventing hydraulic oil from being suctioned into hydraulic pumps.
Implementation Method 1
the moving member is formed to float on oil
Implementation Method 2
The first stopper is elastically deformable
Data Source
Figure 1
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AI summary
Object: Air bubbles are removable with the use of an air vent structure having a compact and simple configuration. Resolution: An exhaust valve that is provided to a plate-like portion provided in a vicinity of an upper end of a filtration device installed in a tank for storing oil includes a rod-like portion inserted into an air vent hole formed in the plate-like portion, a first stopper provided at an upper end of the rod-like portion, and a second stopper provided at a lower end of the rod-like portion. The second stopper and the rod-like portion integrally form a moving member, and the moving member is formed to float on the oil. A hollow portion provided with one end of the rod-like portion is formed in the first stopper. The rod-like portion is movable between a position at which the first stopper abuts against the air vent hole to close the air vent hole and a position at which the moving member abuts against the air vent hole.