Built-in Oil-Gas Separator with Nested Filtration and Oil Return
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Solution Overview
Problem
Built-in oil-gas separating devices in oil-injected compressor systems suffer from lubricating oil accumulation, leading to reduced treatment efficiency and increased oil consumption due to the lack of an oil return mechanism, causing oil to be discharged with compressed air.
Innovation Solution
A built-in oil-gas separating device with a double-layer filtration structure, including a secondary and main oil-gas separator, an oil-gas barrel, and oil return steel pipes with check valves, allowing for the recycling of lubricating oil through a well-designed oil return system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-layer filtration structure is used in the oil-gas separator, then the device complexity is reduced, but the oil content reduction efficiency deteriorates
Solution Approach 1:
The oil-gas separator is divided into two independent filtration layers: a main oil-gas separator and a secondary oil-gas separator. Each layer independently filters oil from compressed air, with the secondary separator providing additional filtration. This segmentation allows the system to achieve superior oil removal (40% reduction) without excessive complexity, as each layer is a simple, proven filtration structure.
2Device complexity
If no oil return device is included in the oil-gas separator, then the device complexity is reduced, but the lubricating oil loss increases
Solution Approach 1:
The oil return device enables the oil-gas separator to automatically recycle lubricating oil without external intervention. Oil collected at the bottom of each separator is automatically returned to the compressor through dedicated return pipes, allowing the system to maintain low oil consumption throughout its service life without requiring manual maintenance or external oil supplementation.
3Loss of substance
If a double-layer filtration structure with oil return device is implemented, then the oil content reduction is improved, but the device complexity increases
Solution Approach 1:
The secondary oil-gas separator is positioned inside the main oil-gas separator, creating a nested configuration where the smaller secondary separator is housed within the larger main separator. This nesting arrangement allows both filtration stages to occupy the same space, achieving enhanced oil removal without proportionally increasing the overall device volume or structural complexity.
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 achieves a 40% reduction in oil content in compressed air, ensuring consistent low oil content over the device's service life, minimizing lubricating oil loss and environmental pollution.
Implementation Method 1
A lower end of the secondary oil return steel pipe is arranged adjacent to a bottom portion of the secondary oil-gas separator. An upper end of the secondary oil return steel pipe is sealingly connected to an end of a secondary high pressure oil pipe via a check valve.
Implementation Method 2
As the usage time increases, the lubricating oil will be gradually accumulated on the bottom portion of the oil-gas separator after oil-gas mixture is filled in the oil-gas separator.
Data Source
AI summary
A built-in oil-gas separating device includes a secondary oil-gas separator, a main oil-gas separator, an oil-gas barrel, an oil-gas barrel liner, and an oil-gas barrel lid. The secondary oil-gas separator is disposed inside the main oil-gas separator. The oil-gas barrel liner is disposed around the main oil-gas separator. The oil-gas barrel liner is disposed inside the oil-gas barrel. Upper end faces of the secondary oil-gas separator and the main oil-gas separator are sealingly connected to a lower end face of the oil-gas barrel lid. The oil-gas barrel lid has a gas discharging hole located above the secondary oil-gas separator. The gas discharging hole is sealingly connected to a pressure maintenance valve. The compressed air obtained by the double layer filtration structure of the present disclosure can achieve a 40% reduction in oil content as compared with the compressed air obtained by the ordinary single layer filtration structure.