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Research on the Resisting Clogging Emitter

Author: DuMin
Tutor: WuPuTe
School: Northwest University of Science and Technology
Course: Agricultural Soil and Water Engineering
Keywords: Block Dripper Labyrinth path Rapid Prototyping
CLC: S277.9
Type: Master's thesis
Year: 2004
Downloads: 177
Quote: 3
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Abstract


Drippers clogging the main problems in the drip irrigation system , dripper flow rate decreases ranging from drip irrigation system , affect the uniformity dripping ; while drippers scrapped drippers clogging causes the drip irrigation system can not work properly , serious affect the promotion and application of drip irrigation technology . The purpose of this paper is to study the development of a new anti- clogging drippers improve drippers anti- clogging ability to extend the Dripper service life , reduce filtering requirements , reduce system investment . The main findings are as follows : 1 , this study analyzed the domestic and international anti-clogging drippers design theory and structural features based on the proposed new structure of a variable runner anti-clogging drippers . The flow path of the dripper adhesiveness made ??by a two-part structure , when the drippers in normal operation , the flow channel in a close contact state , constitute a water passage , and has a good energy dissipation effect ; When the dripper is ON, OFF instantly . due to changes in pressure such that the structural separation of the two parts constituting the flow channel , the cross-section increases, thereby clogging the flow channel impurity washouts . Indoor hydraulic performance testing and outdoor anti-clogging performance tests measured the dripper flow state index of 0.501 , the flow coefficient of 0.484 , the the dripper flow pressure relationship formula for q = 0.484H0.501 , good anti-clogging performance . 2 , due to the complexity of the maze runner , its internal hydraulic performance not yet mature theoretical basis . This case , under the guidance of the existing hydraulics theoretical formulas using parameterized modular maze runner design ideas . Design a \Dripper followed by parametric, feature modeling software Pro / E 3D CAD solid model design , easy to modify structural parameters . 3, this study uses a state-of-the-art laser rapid prototyping technology anti-clogging drippers prototyping , samples can be directly used for performance testing , greatly shorten the development cycle and cost of the drippers , paved the way for the successful completion of the test .

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CLC: > Agricultural Sciences > Agricultural Engineering > Irrigation and water conservancy > Irrigation and drainage > Drainage and Irrigation Machinery and equipment
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