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Anti-blockage emitter based on Venturi principle

A technology of venturi and watering device, applied in watering device, spraying device, gardening, etc., can solve problems such as poor anti-blocking ability, and achieve the effect of improving the energy dissipation capacity of the flow channel

Active Publication Date: 2014-06-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of poor anti-blocking ability of previous emitters and only rely on the turning area for energy dissipation, and propose an emitter that comprehensively considers energy dissipation ability and anti-blocking ability

Method used

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  • Anti-blockage emitter based on Venturi principle
  • Anti-blockage emitter based on Venturi principle
  • Anti-blockage emitter based on Venturi principle

Examples

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] see figure 1 , the present invention includes an anti-clogging labyrinth channel 7 based on the Venturi principle with a grid-shaped water inlet 2 and a water outlet 1; the anti-clogging labyrinth channel 7 based on the Venturi principle includes several identical flow channel units, each The flow channel unit is composed of four parts: constriction section 3, throat 4, diffusion section 5 and drainage section 6 from the throat to the diffusion section, and a vertical stopper 9 is set between the constriction section 3 and the diffusion section 5, A triangular block 8 is arranged between the diffusion section 5 and the drainage section 6 .

[0014] see figure 2 , the inlet width of the constriction section 3 of the runner unit of the present invention is 1.2mm, the runner unit width is 2.6mm, the height is 3.4mm, the upper edge width of the runner i...

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Abstract

The invention discloses an anti-blockage emitter based on the Venturi principle, which comprises a grid type water inlet, an anti-blockage labyrinth flow passage based on the Venturi principle and a water outlet. The invention improves the labyrinth flow passage structure and applies the Venturi principle into the flow passage design, and each flow passage unit comprises a reduced section, a throat, a diffusing section and a flow guide section from the throat to the diffusing section. By utilizing added triangular baffles, the invention ensures that formed eddy energy dissipation areas include the flow passage corners as well as the areas near the baffles; moreover, the turning, reduction and expansion of the Venturi tube can cause local head loss, thus enhancing the energy-dissipating capability of the flow passage; meanwhile, by utilizing the high speed generated by the flow guide sections to flush the low-speed and easy-to-block turning diffusing sections, the diffusing sections cannot be easily blocked, and thereby the purposes of energy dissipation and blockage resistance are achieved by the emitter.

Description

technical field [0001] The invention belongs to the field of irrigation, in particular to an anti-clogging irrigator based on the Venturi principle used in agricultural water-saving irrigation. Background technique [0002] The emitter is the core component of the drip irrigation project. The effect of the entire drip irrigation project is reflected by the irrigation state of the emitter. Its hydraulic performance and anti-clogging performance greatly determine the overall project benefit. The main function of the irrigator is to dissipate energy, and to transport the pressure water (which can also be mixed with fertilizer) from the water pipeline to the soil near the roots of the crops evenly and slowly at a small flow rate. In order to achieve the energy dissipation effect, most of the current emitter flow channels are strongly curved and slender, causing the transition area of ​​the emitter to be easily blocked. Therefore, it is necessary to design an emitter flow channel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B1/34
CPCA01G25/023
Inventor 魏正英苑伟静楚华丽孟昊
Owner XI AN JIAOTONG UNIV
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