Tubular Filter With Outlet Closure And Bypass Valve
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Solution Overview
Problem
Existing filters used for cleaning lubrication oils do not effectively prevent unfiltered liquid from entering the outlet channel during the replacement of the filtering element, leading to contamination and inefficiency.
Innovation Solution
A filter design featuring a replaceable cylindrical filtering element with an outlet closure mechanism, including a sleeve with holes and a spring, which blocks the flow of unfiltered liquid into the outlet channel and allows filtered liquid to discharge through a central tube, and a bypass valve system that switches to a reserve filtering element when the main element becomes clogged, ensuring continuous filtration and easy element replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the filtering element is made replaceable, then the ease of operation is improved, but unfiltered liquid may enter the outlet channel during replacement causing contamination
Solution Approach 1:
The outlet closure means is pre-positioned in a normal closing position during operation, and the spring is pre-loaded to automatically move the closure means to block the outlet channel when the filtering element is removed. This preliminary preparation ensures that the outlet is automatically sealed before the replacement process completes, preventing contamination without requiring additional manual steps.
Solution Approach 2:
The outlet closure means acts as an intermediary component between the outlet channel and the external environment. During element replacement, this closure means blocks the outlet channel to prevent unfiltered liquid from entering, while still allowing the filtering element to be removed. The closure means serves as a mediator that enables the replacement process while preventing contamination.
2Reliability
If a reserve filter is added, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The reserve filtering element is nested within the existing filter housing, utilizing the same space and structural framework. This nesting approach allows the reserve filter to be integrated into the current design without requiring a completely separate system, thereby improving reliability while minimizing the increase in device complexity.
Solution Approach 2:
The filter system is segmented into a main filtering element and a reserve filtering element that can operate independently. The bypass valve system is also segmented to allow selective routing of fluid through either the main filter or the reserve filter. This segmentation enables continuous filtration capability while maintaining a relatively simple overall structure through modular design.
3Object-affected harmful factors
If the outlet closure means is added, then the contamination prevention is improved, but the device complexity increases
Solution Approach 1:
The outlet closure means is designed to be self-actuating through the spring mechanism that automatically moves the closure means to block the outlet channel when the filtering element is removed. This self-service design eliminates the need for external control systems, sensors, or manual operation, thereby preventing contamination while adding minimal complexity to the overall device.
Solution Approach 2:
The outlet closure means is designed to be simple and disposable in nature, using basic mechanical components that can be easily manufactured and replaced if needed. The spring-loaded mechanism is designed to be robust and simple, avoiding complex assemblies while still effectively preventing unfiltered liquid from entering the outlet channel during element replacement.
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 contamination by blocking unfiltered liquid during filtering element replacement, ensures continuous filtration by switching to a reserve element when the main element becomes clogged, and facilitates easy replacement of the filtering elements.
Implementation Method 1
The filter includes a spring for shifting the outlet closure means to a closing position as the filtering element is removed
Implementation Method 2
a bypass closure means spring, which presses the bypass closure means to the closed position and which gives way as the pressure difference across the main filtering element exceeds a given value
Data Source
Figure 1~4
AI summary
A filter, comprising a body (1) and an inlet channel for liquid to be filtered leading thereto and an outlet channel for filtered liquid leading out of it, and in the body, a replaceable cylindrical filtering element (17) supplied with liquid from the inlet channel, the filter being provided with an outlet closure means (6), which blocks the flow of liquid into the outlet channel as the filtering element (17) is removed from the filter.