Float-Actuated Flap Valve for Automatic Water-Level Control
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Solution Overview
Problem
Existing water-level control systems for farming land are labor-intensive, costly, prone to malfunction, and unreliable due to manual operation, accumulation of debris, and uncertain opening/closing mechanisms, making them inefficient for managing water levels and irrigation needs.
Innovation Solution
A water-level control unit with a hinged lower flap portion and a floating body that automatically adjusts to water levels, ensuring reliable and efficient operation by opening or closing based on buoyancy forces, allowing for one-way or two-way water flow control, and easy installation and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual operation of level boxes is used to control water drainage, then water-level control is achievable, but labor intensity and time consumption increase significantly
Solution Approach 1:
The patent implements self-service through automatic float-actuated mechanisms that open or close valve flaps based on water level without human intervention. The float rises with water level to automatically open valves for drainage, and falls to close them, eliminating manual operation while maintaining reliable water-level control
Solution Approach 2:
The patent replaces manual mechanical operation with automatic mechanical systems using floats and linkages. The float mechanism converts water level changes into automatic valve actuation, substituting human labor with a self-actuating mechanical system that responds to water level conditions
2Reliability
If gate valves are used in level boxes, then water-level control is possible, but dirt and sewage accumulation causes clogging
Solution Approach 1:
The patent inverts the traditional gate valve approach by using downwardly hanging flap valves that close at the bottom rather than gates that lift from the bottom. The flap valve design allows debris to pass through more easily while maintaining sealing, reversing the problematic accumulation pattern of traditional gates
Solution Approach 2:
The patent changes the operational parameters of the valve from a gate lifting mechanism to a flap rotating mechanism. The flap valve rotates on a hinge axis and closes at the bottom position, changing the flow dynamics and debris interaction parameters to prevent clogging while maintaining water-level control functionality
3Extent of automation
If automated gate valve rotation is implemented, then water-level control responsiveness improves, but system complexity and cost increase
Solution Approach 1:
The patent replaces complex automated drive systems with simple float-actuated mechanical linkages. The float directly connects to the valve flap through a hinge mechanism, eliminating the need for motors, sensors, and control electronics while achieving automatic responsive operation
Solution Approach 2:
The patent implements self-service automation where the float automatically detects water level changes and actuates the valve flap through direct mechanical connection. The system serves itself by using the buoyancy force of the float to open valves when water rises and gravity to close them when water falls, without external control systems
4Reliability
If multiple level boxes are installed across drainage pipes, then water-level control coverage improves, but installation cost and labor increase
Solution Approach 1:
The patent applies segmentation by installing multiple independent valve units at different locations along drainage pipes. Each unit is a self-contained module with its own float and flap valve, allowing distributed water-level control across the drainage system while maintaining individual simplicity for easy installation and maintenance
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 system provides reliable, economical, and user-friendly water-level management, enabling efficient water storage and irrigation, reducing manual labor, and minimizing maintenance, while adapting to local conditions and weather changes.
Implementation Method 1
The floating body (14) is configured for moving the valve element (7) from its closed position towards its open position in dependence of a rising level of water at the first upstream side (FS) in the flow channel (3)
Data Source
Figure 1a~1d
Figure 2a~2b
Figure 3a~3b
AI summary
A water-level control unit (1) comprises a housing (2) with a flow channel (3). A valve element (7) is positioned rotatable around a hinge axis (5) inside the flow channel to close off a lower section (LS) of the flow channel while dividing it in a first upstream side (FS) and a second downstream side (SS). The hinge axis is provided at a height (y1) above a bottom of the flow channel. The valve element comprises a lower flap portion (7lo) that in a closed position hangs down from the hinge axis. A floating body (14) is provided at and connected to a side of the lower flap portion for moving the valve element from its closed towards an open position in dependence of a rising level of water (Lw) at the first upstream side in the flow channel.