Rotary Valve Filter for Backwash and Pressure-Release Cartridge Change
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Solution Overview
Problem
Existing filters lack essential functionalities such as water filtration, raw water supply, back-flushing, and standby functions, causing inconvenience to users.
Innovation Solution
A filter with a cylindrical valve core in the water flow control valve that allows for controlled water flow, enabling the filter to perform water filtration, raw water supply, and backwash functions, and facilitates easy replacement of the filter cartridge by releasing internal pressure when switching positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a filter is designed with multiple functions (water filtration, raw water supply, back-flushing, standby), then the filter's functionality and user convenience are improved, but the device complexity increases
Solution Approach 1:
The cylindrical valve core is designed to perform multiple functions: controlling water filtration flow, enabling raw water supply, facilitating back-flushing, and providing standby capability. By integrating all these functions into a single valve core component, the patent achieves multi-functionality without proportionally increasing overall device complexity
Solution Approach 2:
The valve core is segmented into multiple communication openings (first, second, third, and fourth communication openings) that can be selectively connected to different channels based on rotational position. This segmentation allows independent control of different water flow paths while using a unified valve structure
2Ease of operation
If the valve core is designed to release internal pressure when switching positions, then cartridge replacement becomes easier, but the valve structure becomes more complex
Solution Approach 1:
The valve core is designed to automatically release internal pressure as a preliminary action before cartridge replacement is needed. By incorporating pressure release communication openings that activate during normal position switching, the system prepares for maintenance operations in advance, eliminating the need for separate pressure relief steps and simplifying overall cartridge replacement procedures
3Ease of operation
If the filter provides continuous water supply capability, then user convenience is improved, but the system complexity increases
Solution Approach 1:
The valve core is designed as a dynamic component that can be rotated to different positions to switch between water filtration mode and raw water supply mode. This dynamic positioning allows the system to adapt to different operational requirements and maintain continuous water supply capability through simple rotational movement rather than complex control mechanisms
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 filter achieves seamless water filtration, raw water supply, and back-flushing capabilities while simplifying cartridge replacement without additional tools, ensuring continuous water supply and maintaining user convenience.
Implementation Method 1
a water flow control valve, wherein the water flow control valve is connected with the filtering device, wherein the water flow control valve comprises a valve body and a cylindrical valve core, wherein the valve body defines a valve cavity, a water inlet channel and a water outlet channel... the cylindrical valve core is rotatably arranged inside the valve cavity
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The present invention provides a filter, comprising a filtering device (20) and a water flow control valve (10), wherein the filtering device (20) is provided to filter raw water, and the water flow control valve (10) is connected to the filtering device (20) and is provided to control the flow of the raw water in the filtering device (20), so that the functions such as filtering function, back-flushing function, raw water supply function, and standby function are implemented.