Concentric Dilution Filter for Feces Detection
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Solution Overview
Problem
Existing dilution filter apparatuses for feces detection have a large integral size due to non-concentric arrangement of components, making them difficult to mount and requiring excessive space, and they often suffer from filter net blocking by large particles during the mixing process.
Innovation Solution
A dilution filter apparatus with a through hole in the center of the top cover, concentrically connected with the sampling component and connecting cylinder, allowing for reduced size and improved mixing by rotating the sampling part to stir and collect suspension without direct impact on filter nets, using protrusion ribs and extending plates to prevent blockage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sampling component and insertion hole are arranged at different parts of the top cover to allow separate functions, then the dilution filter apparatus can perform sampling and insertion operations, but the area of the top cover and sample tube body must be large, resulting in larger integral size and occupied space
Solution Approach 1:
The patent combines the sampling component and insertion hole at the same location (center of top cover), allowing the sampling needle to perform both sampling and insertion functions through a single aperture, thereby reducing the top cover area while maintaining operational functionality
Solution Approach 2:
The single central aperture serves multiple purposes: it allows the sampling needle to insert diluent, collect samples, and perform insertion operations, making the aperture multi-functional and eliminating the need for separate components that would increase area
2Ease of operation
If the sampling component and insertion hole are arranged at different parts of the top cover, then the dilution filter apparatus can function properly, but the mounting difficulty on the device for preparing feces detection fluid is increased due to non-concentric arrangement
Solution Approach 1:
The patent uses symmetric concentric arrangement of the sampling component and insertion hole at the center of the top cover, which simplifies mounting alignment by ensuring coaxial connection with the sample tube body, reducing mounting complexity
Solution Approach 2:
By merging the sampling component and insertion hole into a single central location, the patent eliminates the need for complex alignment between multiple components, simplifying the mounting process on the detection fluid preparation device
3Productivity
If the sampling component rotates to stir the mixed suspension, then the dilution and mixing operations are completed, but large particles may directly impact the filter net and cause blockage
Solution Approach 1:
The patent divides the sample tube body into distinct functional zones: an upper mixing chamber for stirring and a lower filtration chamber for filtering, separated by a filter net positioned at the bottom, preventing direct contact between stirring particles and filter net
Solution Approach 2:
The patent introduces a buffer zone (upper portion of sample tube body) as an intermediary space between the mixing action and filter net, where particles are suspended and circulated without directly impacting the filter net, thus preventing blockage while maintaining mixing efficiency
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 apparatus reduces the occupied space, simplifies mounting, and effectively prevents filter net blockage by uniformly mixing and collecting feces detection fluid while ensuring efficient sampling and detection operations.
Implementation Method 1
the sampling component 01 rotates to stir the mixed suspension of the diluent and the feces sample
Implementation Method 2
a filter net 7 is arranged in the sample tube body 09... sucking the suspension entering the suspension collecting chamber 05 by the filter net 7
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A dilution filter apparatus comprises a sampling component (1), a top cover (2) and a sample tube body (9), wherein, a through hole (3) is formed in the center position of the top cover (2); the sampling component (I) comprises a connecting cylinder (4) concentric and rotatably connected with the through hole (3) and a sampling part concentrically connected with the connecting cylinder (4) and capable of collecting suspension; the sample tube body (9) is connected with the top cover (2) to cause the sample tube body (9) to sleeve outside the sampling component (1). The through hole (3), the connecting cylinder (4) and the sampling part which are concentrically arranged replace a sampling component and an insertion hole arranged on the top cover in an original structure, thereby realizing the dilution, stirring and sampling operation of the dilution filter apparatus by only arranging the through hole (3) in the center of the top cover (2), solving the problem of large occupied area due to the fact that the sampling component and the insertion hole are both arranged on the top cover, further reducing a design size of the top cover (2) and the sample tube body (9), and saving a space resource. The present invention further provides a device matched with the above dilution filter apparatus for preparing feces detection fluid and a method for preparing feces detection fluid.