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Pneumatic atomizing sprayer

An atomizing nozzle and pneumatic technology, applied in the direction of spray discharge device, etc., can solve the problems of large particle size fluctuation range, increased system cost, and easy blockage.

Pending Publication Date: 2018-07-17
静快省(苏州)智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to produce small-sized mist droplets (such as the first-level fine water mist), a high working pressure is required, generally greater than 10MPa, which greatly increases the cost of the system, and when the pressure is unstable, the mist droplets The particle size will also be easily affected by a large particle size fluctuation range, which will waste the spraying liquid. In addition, because the nozzle aperture needs to be small enough, generally less than 1 mm, it is also prone to clogging when the liquid is impure

Method used

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Examples

Experimental program
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Embodiment 1

[0026] Such as Figure 1 to Figure 4 As shown, a preferred embodiment of the present invention provides a pneumatic atomizing nozzle, including a nozzle body 2, and an air knife unit. The nozzle body 2 is provided with a liquid outlet pipeline 4 for spraying liquid droplets, and the air knife unit It includes an end cover 1 installed on the main body of the spray head 2 and forming an air chamber 3 with the main body 2 of the spray head, and an air knife assembly for spraying gas to the end of the liquid outlet pipeline 4 to cut the sprayed liquid droplets. The position corresponding to the liquid outlet pipeline 4 on the cover 1 is provided with a nozzle 11 for guiding liquid droplets and ejecting gas; The gas channel 13 for guiding the gas flow and the inclined surface 12 arranged inside the end cover and used to refract the gas from the gas tank to the end of the liquid outlet pipeline.

[0027] The main body of the nozzle is provided with a gas pipeline connector connecte...

Embodiment 2

[0039] In order to detect the distance d between the end of the liquid outlet pipeline and the nozzle, and the cutting effect of the airflow on the sprayed liquid droplets, this embodiment provides a pneumatic atomizing nozzle whose main parameters are: The inner diameter is 1mm, the inner diameter inside the nozzle is 2mm, the output pressure of the liquid outlet pipeline is 1.2Mpa, the output pressure of high-pressure air is 2.5Mpa, and the slope angle α is 50°.

[0040] Adjust the distance d between the end of the liquid outlet pipeline and the nozzle, and the results are shown in Table 2. It can be seen that when the distance d between the end of the liquid outlet pipeline and the nozzle becomes smaller, due to the insufficient contact between the air knife and the sprayed droplets, although it can Increasing the cutting intensity makes part of the droplet size smaller, but the proportion of non-atomized droplets will increase accordingly. Considering the actual applicatio...

Embodiment 3

[0044] This embodiment provides a pneumatic atomizing spray head that further improves the spraying effect compared with the second embodiment. The inner side of the end cover 1 is located between the inclined surface 12 and the nozzle 11 and is further provided with an arc surface 14 . The curved surface 14 allows the swirling airflow to slide smoothly along the inner wall to form a gas envelope, which protects the atomized liquid from being pushed toward the nozzle, and makes the inner cavity dry, so as to prevent the accumulation of liquid from interfering with the airflow or causing short circuit of the electrodes. If there is no arc surface, the gas will form multi-layer convection in the gas chamber, causing the liquid part to deposit on the inner wall of the gas chamber, shortening the spraying distance of the atomized liquid droplets.

[0045] In order to detect the cutting effect and spraying effect of sprayed liquid droplets on different arc surfaces, this embodiment ...

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Abstract

The invention relates to an atomizing sprayer and particularly relates to a pneumatic atomizing sprayer. The pneumatic atomizing sprayer comprises a sprayer main body and an air knife unit, wherein aliquid outlet pipeline used for spraying liquid drops is arranged on the sprayer main body; the air knife unit comprises an end cover which is mounted on the sprayer main body and an air knife assembly, an air chamber is formed between the sprayer main body and the end cover, and the air knife assembly is used for spraying gas to the end part of the liquid outlet pipeline so as to cut the sprayedliquid drops; and a nozzle used for guiding the spraying of the liquid drops and the gas is arranged at a position corresponding to the liquid outlet pipeline on the end cover. The pneumatic atomizingsprayer which does not need high working pressure can provide mists with stable particle sizes, and the system cost is low.

Description

technical field [0001] The invention relates to an atomizing nozzle, in particular to a pneumatic atomizing nozzle. Background technique [0002] Atomizing nozzles generally include single-fluid atomizing nozzles and dual-fluid atomizing nozzles. Taking the single-fluid atomizing nozzle as an example, it is widely used in the pharmaceutical industry, agriculture, and environmental protection industries. Its working principle is usually: the liquid is pressurized by the pump and sent into the nozzle, and then sprayed out from the small hole of the nozzle to make the liquid mist into tiny droplets. Its atomization characteristics depend on the operating pressure and the aperture of the nozzle. Generally speaking, the higher the pressure difference inside and outside the fine hole, the smaller the nozzle hole, the finer the atomized droplets, and the more uniform the particle distribution; otherwise, the lower the pressure difference is, the smaller the nozzle hole is. The la...

Claims

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Application Information

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IPC IPC(8): B05B5/03
CPCB05B5/03
Inventor 张明李雷青晓勇
Owner 静快省(苏州)智能科技有限公司
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