Filter Backwashing Unit With Multi-Valve Switching
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Solution Overview
Problem
Existing filter systems for aquariums are cumbersome and inefficient in washing filter elements, often requiring disassembly or redundant external pipelines, leading to operational challenges and potential bloating issues.
Innovation Solution
A filter with a backwashing unit that includes a two-position three-way valve, a second valve, and a third valve, allowing for seamless switching between filtering and backwashing stations without altering water flow directions, featuring a compact and simplified design with a motor-driven roller for thorough washing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the filter element is taken out for washing after dismounting the filter cartridge, then the filter element can be washed, but the process becomes cumbersome and efficiency decreases
Solution Approach 1:
The filter system performs self-washing through an automatic backwashing mechanism. The washing pump draws water from the water outlet and reverses the flow through the filter element, automatically removing accumulated impurities without requiring manual disassembly or external intervention for washing operations.
Solution Approach 2:
The system dynamically switches between filtering mode and backwashing mode through controllable valves. The washing pump can be activated to reverse water flow direction, transforming the static filter element into a dynamically washable component, enabling efficient cleaning while maintaining system integrity.
2Ease of manufacture
If a backwashing method is adopted with clear water entering from the water outlet, then washing can be performed, but redundant external pipelines are required causing bloated appearance
Solution Approach 1:
The backwashing function is merged into the existing filter cartridge structure. The washing pump, valves, and piping are integrated within the filter housing, combining the filtering and washing functions into a single compact unit without requiring separate external pipelines or additional space.
Solution Approach 2:
The filter cartridge is designed to perform multiple functions: filtering during normal operation and self-washing during backwashing. The same water outlet serves dual purposes as both the filtered water discharge and the water source for backwashing, eliminating the need for separate washing pipelines.
3Adaptability or versatility
If multiple valves are used for backwashing, then filtering and backwashing can be controlled, but switching operation becomes troublesome and error-prone
Solution Approach 1:
The control system monitors the operational state and automatically activates the appropriate valves and washing pump based on the selected mode (filtering or backwashing). This feedback mechanism ensures that valves are switched correctly without manual intervention, reducing operational errors and simplifying user interaction.
Solution Approach 2:
A control unit acts as an intermediary between the user and the multiple valves. Instead of requiring direct manual switching of multiple valves, the control unit receives user input and automatically coordinates the valve switching sequence, making the complex multi-valve system easy to operate and reducing the risk of errors.
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 simplifies the washing process, reduces operational complexity, and maintains a compact structure, ensuring efficient and convenient maintenance without the risk of bloating, while enhancing filtration performance.
Implementation Method 1
a washing pump, the working direction of the washing pump can be switched, the washing pump is used to draw water from the water outlet and discharge the water to the water inlet
Data Source
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AI summary
The present invention discloses a filter with a backwashing unit, which is used for conveniently and rapidly washing a filter element in the filter, and is characterized by including a two-position three-way valve, a second valve and a third valve, wherein the two-position three-way valve is provided with a port P1, a port A1 and a port B1, the second valve is provided with a port P2 and a port A2, and the third valve is provided with a port P3 and a port A3; the port P1 is connected with the water inlet, the port A2 is connected with the water outlet, the port A3 is connected with the drain outlet, the port A1 and the port P3 are connected with the inlet region of the filter element, and the port B1 and the port P2 are connected with the outlet region of the filter element; and the filter is located on a filtering station when the port P1 communicates with the port A1, the port P2 communicates with the port A2, and the port P3 does not communicate with the port A3, and the filter is located on a backwashing station when the port P1 communicates with the port B1, the port P2 does not communicate with the port A2, and the port P3 communicates with the port A3. The switching between the filtering station and the backwashing station may be completed by only simultaneously switching the three valves instead of changing the water flow directions of the water inlet and the water outlet, so that the whole process is simple, and the operation is convenient; in addition, the pipeline is compact in structure, and the overall appearance of the filter cartridge is also very simple.