Fan-shaped air suction nozzle capable of automatically adjusting air suction speed

A technology of automatic adjustment and speed, applied in the direction of injection device, liquid injection device, etc., can solve the problems of limited mixing efficiency, inability to adjust the air intake speed, and inability to guarantee the air intake speed.

Active Publication Date: 2021-04-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the air intake channel of the existing air-suction nozzle is fixed, and the air intake speed cannot be adjusted. When the spray pressure changes, the air intake speed will change, and a suitable air intake speed cannot be guaranteed.
At the same time, the angle between the cente

Method used

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  • Fan-shaped air suction nozzle capable of automatically adjusting air suction speed
  • Fan-shaped air suction nozzle capable of automatically adjusting air suction speed
  • Fan-shaped air suction nozzle capable of automatically adjusting air suction speed

Examples

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Example Embodiment

[0074]Example 2

[0075]According to the results of the existing air suction head, in connection with the present embodiment, a sector-shaped gas suction head that automatically adjusts the intake is used, and the diameter of the inclined section 11 is 6mm, and the section 11 is outlet. The diameter and the intake portion of the straight portion of the straight section of 3 mm; the air passage 4 is 3 mm, a rectangle having a width of 1.5 mm; the length of the intake hole plate 3 is 9mm, the width is 4.5mm, thickness taken 2mm, inlet plate 3 and the area S of the liquid contact surface in the pressure groove 2cThe product of the inlet plate 3 width and thickness, that is, Sc9mm2The diameter of the in-air hole plate 3 is 0.4 mm, that is, the through hole area S00.1256mm2The spring 5 selects a rounded coil spring having an outer diameter of 2 mm, a natural length of 6 mm, an elastic coefficient K is 1 N / mm.

[0076]From the above conclusions, according to expressionsA number of via holes r...

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Abstract

The invention provides a fan-shaped air suction nozzle capable of automatically adjusting the air suction speed. The fan-shaped air suction nozzle capable of automatically adjusting the air suction speed comprises a nozzle body, a liquid channel, a pressure tank and an air inlet channel, wherein the liquid channel communicated with a spray hole is arranged in the nozzle body; the inlet section of the liquid channel is communicated with the pressure tank; the air inlet channel penetrates through the pressure tank and then is communicated with the liquid channel; an air inlet hole plate is installed in the pressure tank through an elastic damping device; the air inlet hole plate is made to move at the intersection of the pressure tank and the air inlet channel through changes of the inlet pressure of the liquid channel; a plurality of through holes with the same size or different sizes are formed in the air inlet hole plate; and the air inlet hole plate moves in the pressure tank to change the air inflow in the liquid channel. According to the fan-shaped air suction nozzle capable of automatically adjusting the air suction speed provided by the invention, the air inlet speed can be automatically adjusted according to the pressure change of liquid flowing into the nozzle, so that sucked air more sufficiently collides with the liquid in a straight column section at the air inlet part of the liquid channel, and air and pressure liquid are better mixed.

Description

technical field [0001] The invention relates to the field of atomization and spraying of plant protection machinery, in particular to a fan-shaped air suction spray head which can automatically adjust the suction speed. Background technique [0002] Spray drift is an important factor affecting the quality of spraying operations and causing pesticide hazards. Air suction nozzles are an effective anti-drift technology. Based on the Venturi effect, the air-suction nozzle automatically inhales air and mixes with the liquid medicine to form a gas-liquid mixed flow, and the droplets formed by its atomization have a large particle size and are not easy to drift. According to the law of Kelvin-Helmholtz instability, instability occurs inside a fluid with a shear force velocity or at the interface of two different fluids with a velocity difference. full. However, the structure of the air intake channel of the existing air-suction nozzle is fixed, and the air intake speed cannot be ...

Claims

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Application Information

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IPC IPC(8): B05B7/04
CPCB05B7/0416B05B7/0425B05B12/1436B05B7/1254B05B12/085B05B7/0475
Inventor 龚辰李东阳王育立高波
Owner JIANGSU UNIV
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