Double-Layer Asymmetric Channel Drip Irrigation Belt Design

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Solution Overview

Problem

Current drip irrigation systems face high costs and inefficiencies due to the need for frequent replacement of irrigators and limitations in channel design, leading to poor hydraulic performance and blockage resistance, especially in flow-type thin wall drip irrigation belts.

Innovation Solution

A design and forming method for a flow-type thin wall drip irrigation belt with a double-layer asymmetric channel structure, optimized water inlets and outlets, and an improved molding process using computational fluid dynamics (CFD) simulation and material modification to enhance toughness and resistance to deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional single-layer channel structure is used, then the manufacturing process is simple, but the hydraulic performance is poor and blockage resistance is low

Engineering Contradiction:

Improveblockage resistanceVSAvoidchannel structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The channel is divided into multiple layers (at least two layers) with each layer containing flow passages. This segmentation allows water to flow through multiple paths, increasing blockage resistance as clogging in one layer can be compensated by other layers, while maintaining reasonable structural complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple flow passage layers are nested within each other in the thickness direction of the irrigation belt. The flow passages in different layers are positioned to create a three-dimensional flow network, enabling water to navigate through nested pathways that resist blockage while keeping the overall structure compact

Inventive Principle:

Principle #7Nested doll (Nesting)

2Loss of substance

If the wall thickness is reduced to lower costs, then the material consumption decreases, but the resistance to deformation and blockage resistance deteriorates

Engineering Contradiction:

Improvematerial consumptionVSAvoidblockage resistance

Core Design Contradiction:

Loss of substanceVSReliability

Solution Approach 1:

The flow passages are arranged in multiple layers in the thickness direction, transitioning from a two-dimensional single-layer structure to a three-dimensional multi-layer structure. This allows thin-wall construction while maintaining blockage resistance through vertical flow pathways

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The channel structure has different properties in different regions: the multi-layer flow passage structure is concentrated in the channel region where blockage resistance is needed, while the overall belt wall thickness can be reduced in non-critical areas, optimizing material distribution

Inventive Principle:

Principle #3Local quality

3Reliability

If a complex multi-layer channel structure is implemented, then the blockage resistance improves, but the manufacturing precision requirements increase

Engineering Contradiction:

Improveblockage resistanceVSAvoidchannel structure parameters

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The manufacturing process is segmented into forming the belt body and then forming the flow passages. This allows the multi-layer channel structure to be created in a controlled sequence, reducing the precision requirements compared to forming the entire complex structure in one step

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The belt body is formed first with the basic structure, and then the flow passages are formed subsequently through extrusion or other processes. This preliminary action approach allows for easier control of the final channel dimensions and reduces manufacturing precision challenges

Inventive Principle:

Principle #10Preliminary action

4Reliability

If frequent replacement of irrigators is required, then the system can be maintained, but the usage cost increases

Engineering Contradiction:

Improvesystem maintenanceVSAvoidusage cost

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The irrigation belt is designed as a disposable component with integrated flow passages that can be replaced easily. The thin-wall construction makes it inexpensive to produce, allowing frequent replacement without significant cost impact, while the integrated design simplifies the replacement process

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The flow passages are merged directly into the belt body structure, creating an integrated irrigation belt with no separate movable parts. This merging simplifies maintenance by eliminating the need to service individual components, allowing the entire belt to be replaced as a single unit

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11449648B2Method of designing and forming a channel of flow-type thin-wall drip irrigation belt

Publication Date: 2022.09.20 BEIJING CHINA AGRICULTURE HORIZON SMART IRRIGATION TECHNOLOGY CO LTD

AI summary

The present disclosure discloses design and forming method of a channel of flow-type thin wall drip irrigation belt. The method includes the steps of construction of a double-layer asymmetric channel structure, determination of a structure parameter control threshold and optimal value, design of water inlets and water outlets of the double-layer asymmetric channel structure, proposal of a machining method of a molding wheel matching the double-layer asymmetric structure and an optimization method of a flow-type drip irrigation belt molding process, material modification of a flow-type drip irrigation belt and design of a reasonable formulation, realization the stereotype production of the flow-type drip irrigation belt, etc.