Rotary Backwashing Distributor for Filtering Unit
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Solution Overview
Problem
Existing filtering units require complex distribution arrangements and additional components, making them costly and difficult to produce, especially for smaller filters, and they suffer from increased pressure drop and energy consumption due to their size and structure.
Innovation Solution
A filtering unit with a rotary backwashing distributor in direct contact with a coaxially arranged divider, eliminating the need for a distribution spacer and distributor supporting structure, allowing for easier and cheaper manufacturing, reduced length, and improved flow capacity by integrating a drive rod for rotational power transmission and biasing means for sealing contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a distribution spacer and distributor supporting structure are used in the filtering unit, then the backwashing function is achieved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The rotary backwashing distributor is placed in direct contact with the divider, merging the functions of the distributor and divider into a single integrated structure. This eliminates the need for separate distribution spacers and supporting structures, reducing device complexity while maintaining the backwashing function.
Solution Approach 2:
The distribution spacer and distributor supporting structure are extracted (removed) from the system. The rotary backwashing distributor directly contacts the divider to perform the distribution function, eliminating unnecessary components and simplifying the overall structure.
2Reliability
If a distribution spacer and distributor supporting structure are used in the filtering unit, then the backwashing function is achieved, but the manufacturing cost increases
Solution Approach 1:
By merging the distributor and divider into a direct contact arrangement, the number of parts to be manufactured decreases. This reduces manufacturing cost and simplifies production processes while preserving the essential backwashing function.
Solution Approach 2:
Removing the distribution spacer and supporting structure eliminates the need to manufacture these additional components, thereby reducing overall manufacturing cost and simplifying the production process.
3Reliability
If the filtering unit is made larger to accommodate distribution components, then the backwashing function is achieved, but the pressure drop and energy consumption increase
Solution Approach 1:
The integrated distributor-divider structure reduces the overall size of the filtering unit by eliminating separate components. This compact design reduces flow path length and resistance, thereby lowering pressure drop and energy consumption while maintaining backwashing functionality.
Solution Approach 2:
By extracting and removing unnecessary distribution components, the filtering unit size is reduced. This leads to shorter fluid flow paths and lower resistance, resulting in reduced pressure drop and energy consumption.
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 results in a cheaper, easier-to-produce filtering unit with enhanced flow capacity and reduced energy consumption, suitable for limited spaces and marine environments, while maintaining effective backwashing functionality.
Implementation Method 1
backwashing to be performed in these sectors due to the pressure gradient across the filtering mesh, i.e. the pressure gradient between the external face side and the internal face side
Data Source
AI summary
A filtering unit includes a filtering component having inner and outer walls arranged around each other so as to define an inner space between the inner wall and the outer wall, a filtering mesh partitioning the inner space into a pre-filter chamber and a post-filter chamber, at least said pre-filter chamber being circumferentially compartmented in sectors, a divider arranged coaxially with the filtering component and having distinct distribution columns, and a rotary backwashing distributor having a shutter provided with a discharge opening, the rotary backwashing distributor being mounted to rotate so that said discharge opening is periodically and selectively put into communication with each distribution column, whereby each distribution column periodically and selectively establishes communication between the discharge opening and respective ones of the sectors. The rotary backwashing distributor is in direct contact with the divider.