Flow self-adapting irrigation dripper based on shape memory effect and agricultural irrigation system

By combining the radial resonant corrugated main channel and the external sensing module in the dripper, the cross-sectional area of ​​the flow channel can be adjusted in real time, solving the problems of poor anti-clogging and high energy consumption of traditional drippers, and realizing efficient water-saving and environmentally friendly adaptive irrigation.

CN120548960BActive Publication Date: 2026-07-10JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU UNIV
Filing Date
2025-07-08
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional drippers suffer from poor clogging resistance, slow response, and high energy consumption, making them difficult to adapt to changes in soil moisture and crop growth cycle requirements. Furthermore, the materials used are not environmentally friendly.

Method used

The main channel adopts a radial resonant corrugated structure inside the sleeve, uses shape memory polymer to change the effective nominal diameter, and combines an external sensing module to adjust the cross-sectional area of ​​the channel in real time. Dynamic adjustment is achieved by driving the deformation of NITI alloy wire through electrical stimulation.

Benefits of technology

It enables rapid response adaptive irrigation, improves water saving rate and operation and maintenance costs, adapts to complex terrain, and reduces the risk of blockage and environmental pollution.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a flow self-adaptive irrigation dripper based on shape memory effect and an agricultural irrigation system, which comprises a shell, a main flow channel, a sleeve and a connector, one end of the shell is connected with a water supply end through the connector, the sleeve is installed in the shell, the inside of the sleeve is provided with the main flow channel with variable effective nominal diameter, the main flow channel is a radial harmonic wave structure, and the main flow channel is made of shape memory polymer; the main flow channel is loaded with stimulation, so that the main flow channel moves along the axial direction, and the effective nominal diameter is changed. The application can realize dynamic adjustment of the flow channel cross-sectional area, realizes self-adaptive irrigation with rapid response, and solves the problems of poor anti-blocking property, response lag and high energy consumption of the traditional drip irrigation system.
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