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Novel venturi fertilizer absorber

A technology of Venturi and fertilizer suction device, applied in the field of new type of Venturi fertilizer suction device, can solve the problems of small negative pressure range of fertilizer suction port, unsatisfactory fertilizer suction effect, etc., so as to improve the fertilizer suction environment, improve the fertilizer suction effect, simple structure

Inactive Publication Date: 2014-04-16
NORTHWEST A & F UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In view of the current small-scale drip irrigation system supporting the Venturi fertilizer applicator has strict operating conditions, the negative pressure range of the fertilizer suction port is small, and the fertilizer absorption effect is not ideal. The purpose of this invention is to propose a new type of Venturi fertilizer applicator structure. To improve the fertilizer suction performance and reliability of the fertilizer suction device

Method used

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  • Novel venturi fertilizer absorber
  • Novel venturi fertilizer absorber
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Embodiment Construction

[0018] According to the principle of Venturi tube and relevant fluidics principles, the applicant, for a constant flow, the flow velocity of the fluid is inversely proportional to the area of ​​the cross-flow section, and when the cross-section of the flow channel changes, the flow velocity of the fluid will change accordingly. When the cross-sectional area becomes smaller, the flow velocity increases; when the cross-sectional area becomes larger, the flow velocity decreases. For the Venturi tube, the flow velocity of the fluid theoretically reaches the maximum at the throat (the smallest cross-sectional area), but when the fluid is a pressure flow and the flow velocity is large, due to the joint action of pressure and flow velocity inertia (with the characteristics of jet flow), The maximum flow velocity of the fluid appears behind the throat of the Venturi tube, and there is a vacuum around the tube wall behind the throat (the throat of the Venturi tube is centrally symmetric...

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Abstract

The invention discloses a novel venturi fertilizer absorber. The absorber comprises a venturi, wherein the venturi is provided with a water inlet section and a flow outlet section of the same diameter as the water inlet section, an eccentric contraction section is arranged behind the water inlet section and extends from the tail end of the water inlet section to a throat section, an eccentric expanding section is arranged behind the throat section and extends to the flow outlet section, a fertilizer absorbing opening is arranged behind the starting end of the expanding section, and a fertilizer absorbing tube and a fertilizer absorbing quantity control valve are connected with the fertilizer absorbing opening. By the aid of the novel venturi fertilizer absorber, running water is effectively prevented from flowing into the fertilizer absorbing tube, and the fertilizer absorbing effect of the venturi fertilizer absorber is improved.

Description

technical field [0001] The invention belongs to the technical field of agricultural water-saving irrigation, relates to drip irrigation technology and a small fertilizer absorber for the drip irrigation system in the equipment industry, in particular to a novel Venturi fertilizer absorber. Background technique [0002] Drip irrigation is a method of transporting irrigation water to the root zone of field crops through water pipelines, using a special small flow irrigator to locally irrigate the growing area of ​​​​crops drop by drop, which can realize accurate control of irrigation time and irrigation water volume , thus greatly reducing the ineffective loss of irrigation water and improving the utilization efficiency of irrigation water, so drip irrigation is an advanced modern water-saving irrigation technology. Since drip irrigation directly transports water to the root zone of crops, it reduces the evaporation and leakage loss during the water transport process, so that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C23/04
Inventor 范兴科孔令阳孙艳琦吴普特牛文全
Owner NORTHWEST A & F UNIV
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