Laminated Filter Springless Design for Agricultural Irrigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing laminated filters for agricultural irrigation water filtration rely on pre-pressing springs, which corrode quickly if made of carbon steel or lose elasticity if made of stainless steel, leading to a loss of filtering effectiveness.
Innovation Solution
A fully plastic laminated filter structure that uses water flow pressure to press the laminations, eliminating the need for a pre-pressing spring and reducing backflushing water pressure, with a design featuring a housing, inner sleeve, filter element, and head cover, including baffle structures and filtrate openings to direct water flow and maintain sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pre-pressing spring is used to press the laminations, then the filter can maintain filtering function, but the spring will corrode quickly if made of carbon steel or lose elasticity if made of stainless steel, leading to loss of filtering effectiveness
Solution Approach 1:
The patent removes the pre-pressing spring from the filter structure entirely. Instead of using a mechanical spring component that is prone to corrosion and elasticity loss, the design relies on the inherent rigidity of the housing and support structure to maintain lamination pressure, thereby eliminating the reliability issues associated with metal springs
Solution Approach 2:
The patent replaces the mechanical spring-based pressing system with a rigid structural support system. The housing and support structure are designed to provide continuous pressing force on the laminations through their structural geometry and material rigidity, eliminating the need for elastic mechanical components
2Reliability
If a pre-pressing spring is used to press the laminations, then the filter can maintain filtering function, but the required pressure for backflushing water is increased due to spring resistance
Solution Approach 1:
By removing the pre-pressing spring, the patent eliminates the elastic resistance that opposes backflushing water flow. The rigid support structure provides necessary lamination pressure during filtration but does not create resistive force during backflushing, thereby reducing the energy requirement for the backflushing process
Solution Approach 2:
The patent creates a dynamic system where the support structure provides pressing force during normal filtration operation but does not resist the backflushing flow. The rigid structure allows for one-way pressure application - maintaining lamination contact during filtration while permitting free movement during backflushing
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 prolongs the filter's working life and reduces the required pressure for backflushing, ensuring continuous filtration without the limitations of metal components and pre-pressing springs.
Implementation Method 1
the laminations for filtering are pressed by water flow pressure
Data Source
AI summary
A laminated filter comprises a housing inner sleeve filter element and head cover covering the housing, the housing having an inlet and a second outlet. An inner bottom face of the housing has a sealing ring, a bottom end of the inner sleeve being disposed between the sealing ring and an inner side of the housing, and a top end of the inner sleeve being disposed in the head cover. A bottom end of the filter element is disposed at an inner side of the sealing ring, and a top end of the filter element is disposed in the head cover. A gap communicating with the inlet is formed between the inner sleeve and housing. The top end of the inner sleeve has first filtrate openings, and the top end of the filter element has first and second baffle structures, the second baffle structures having second filtrate openings.