Drip Irrigation Tube Slit Design Prevents Dirt Ingress
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Solution Overview
Problem
Drip irrigation tubes experience a suction effect when irrigation is interrupted, causing dirt particles from the soil to be sucked into the dosing elements and potentially blocking them, leading to disrupted irrigation and plant damage.
Innovation Solution
The outlet openings are designed as slits with supporting means, such as ribs or protrusions, to prevent bending and keep the slits closed during negative pressure conditions, thereby preventing dirt entry and maintaining dosing element functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If outlet openings are designed as slits without supporting means, then water can be efficiently emitted during irrigation, but dirt particles can be sucked into dosing elements during pressure drops
Solution Approach 1:
The slit-shaped outlet opening utilizes the flexibility of the tube walling to automatically open during irrigation (under positive pressure) and close during pressure drops, preventing dirt ingress while maintaining water flow efficiency during operation
Solution Approach 2:
The outlet opening transitions from a static design to a dynamic one where the slit edges can move between open and closed states based on pressure conditions, optimizing both water emission and contamination prevention
2Reliability
If supporting means are added to prevent slit bending, then dirt entry is prevented, but device complexity increases
Solution Approach 1:
The tube walling itself serves as the supporting structure, utilizing its inherent flexibility and elastic properties to provide the necessary support without adding separate complex mechanical components
Solution Approach 2:
The slit edges themselves provide the supporting function through their elastic deformation characteristics, automatically adjusting to pressure conditions without requiring external support structures
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 slit design ensures that water is efficiently emitted during irrigation and remains closed during pressure drops, preventing dirt entry and maintaining dosing element functionality, thus ensuring consistent irrigation.
Implementation Method 1
the edge regions of the slit are supported by supporting means in such a manner as to limit any bending of the edge regions of the slit towards the dosing elements
Implementation Method 2
inlet regions—through which the water passes from the tube into the dosing elements—dosing regions, in which the pressure of the through-flowing water is reduced
Data Source
AI summary
In the case of a drip irrigation tube the dosing elements which are inserted therein and are connected to the walling of the drip irrigation tube each comprise inlet regions, dosing regions and outlet regions, through which the water issues out of the drip irrigation tube via outlet openings installed in the tube walling. The outlet openings are in the form of a slit, the edge regions of the slit are supported by supporting means in such a manner as to limit bending of the edge regions of the slit towards the dosing elements. As a consequence, when negative pressure prevails in the tube contaminants are prevented from being able to penetrate through the slits into the dosing elements and block same.