Drip Tape Irrigation Emitter Clogging Prevention
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Solution Overview
Problem
Drip emitters in irrigation systems are prone to clogging due to particulates, leading to inefficiencies and increased costs, and existing attachment methods are labor-intensive and costly, especially for seasonal use.
Innovation Solution
A continuous tape with integrated emitters is bonded to the inside surface of a pipe, featuring a filtering section with vanes to remove oversized particles and a flow regulation section with a labyrinth path to establish turbulent flow, preventing clogging and reducing particle deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If simple orifice or restriction emitters are used to create drip flow, then water pressure and flow rate are reduced to suitable levels, but the emitters become clogged due to particulates in the feed line
Solution Approach 1:
The emitter is divided into multiple functional sections: an inlet section with filtering structure, a flow regulation section with restriction orifices, and an outlet section. This segmentation allows the filtering function to be separated from the flow regulation function, enabling particles to be removed before water enters the restriction orifices, thus preventing clogging while maintaining drip flow capability.
Solution Approach 2:
The filtering structure is positioned upstream of the restriction orifices to perform preliminary action by removing particles from the water flow before it reaches the vulnerable restriction elements. This preliminary filtering prevents particles from accumulating in the orifices and causing clogs, while the drip flow function is maintained downstream.
2Ease of operation
If online type drip emitters are attached to feed line by drilling or puncturing holes, then localized water delivery is achieved, but the process becomes time consuming and labor intensive
Solution Approach 1:
The emitter body and the attachment mechanism are merged into a single integrated component. The barbed stem is formed as an integral part of the emitter housing, eliminating the need for separate attachment steps. This allows the emitter to be installed by simply inserting it into the pre-drilled hole, combining the attachment function with the emitter structure itself and significantly reducing installation time and labor.
3Ease of operation
If inline type drip emitter is inserted in the line at the factory, then attachment is simplified, but the cost of individual emitters becomes relatively expensive
Solution Approach 1:
The emitter is designed with a simple, injection-molded plastic construction that prioritizes low manufacturing cost over long-term durability. The integrated barbed stem and housing can be produced cheaply through standard molding processes, making the emitter economical for seasonal or temporary irrigation applications where replacement is more cost-effective than complex manufacturing.
4Object-affected harmful factors
If filtering is used to reduce oversized particles, then some particle removal is achieved, but smaller particles can still accumulate inside emitter causing clogs
Solution Approach 1:
Different sections of the emitter have different structural qualities optimized for their specific functions. The inlet section has a filtering structure with larger openings to remove oversized particles, while the flow regulation section has restriction orifices with precise dimensions for flow control. This local differentiation of quality allows effective particle removal at the inlet while maintaining controlled drip flow at the outlet, preventing clogs in both sections.
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 effectively prevents emitter clogging, reduces labor and costs associated with emitter attachment, and provides a low-cost, easy-to-manufacture irrigation system suitable for seasonal use by ensuring efficient water delivery and reducing particle accumulation.
Implementation Method 1
a filtering section with vanes to remove oversized particles
Implementation Method 2
a flow regulation section with a labyrinth path to establish turbulent flow, preventing clogging and reducing particle deposition
Data Source
AI summary
An irrigation system is disclosed having a pipe and a continuous tape of irrigation emitters that is affixed to an inside surface of the pipe and extends along its length. The pipe includes a plurality of fluid outlet ports, with one output port for each emitter in the tape. Each emitter includes a base member that is affixed to the inner surface of the pipe to create an enclosed fluid flow channel between the inner surface of the pipe and the base member. For each emitter, the fluid flow channel extends from a fluid inlet port, though filtering, flow regulation and collection sections, and to one of the fluid outlet ports formed in the pipe. The flow regulation section is formed as a labyrinth path and established which reduces the deposition of particles in the emitter which can reduce flow and/or clog the emitter.