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Pneumatic small-particle-size atomization spray head

A technology of atomizing nozzle and small particle size, which is applied in the direction of spray discharge device, etc., which can solve the problems of increasing system cost, wasting spray liquid, and prone to clogging

Pending Publication Date: 2018-07-27
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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  • Pneumatic small-particle-size atomization spray head
  • Pneumatic small-particle-size atomization spray head
  • Pneumatic small-particle-size atomization spray head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1 to Figure 4 As shown, a preferred embodiment of the present invention provides a pneumatic small particle size atomizing nozzle, including a nozzle body 2, an air knife assembly and an end cap 1 installed on the nozzle body 2. The nozzle body 2 is provided with a The liquid outlet pipe 4 for the liquid drop, the end cover 1 surrounds the end of the liquid outlet pipe into an air chamber 3, and a nozzle 11 corresponding to the position of the end of the liquid outlet pipe is arranged on it, and the air knife assembly is used In the air chamber, the airflow between the end of the liquid outlet pipeline and the nozzle is formed, and the nozzle is used to eject liquid droplets and gas; the air knife assembly includes a gas that is arranged on the main body of the nozzle 2 and is used to input gas into the air chamber. The groove 21, the gas channel 13 for guiding the gas flow, and the inclined surface 12 arranged inside the end cover and used for refractin...

Embodiment 2

[0033] This embodiment provides a test method for detecting the particle size distribution of the liquid droplets sprayed by the atomizing nozzle, so as to obtain a pneumatic small particle size atomizing nozzle with an optimal structure.

[0034] In the test, the Winner318B laser particle size analyzer was used to measure the particle size of the atomized liquid droplets in the horizontal and vertical directions. In order to ensure the measurement accuracy of the system, the laser particle size analyzer was fixed at a certain position, and the nozzle was fixed on the bracket. Adjust the position of the nozzle relative to the measurement line of the laser particle size analyzer. The starting position of the nozzle is 400mm directly above the middle position between the emission and receiving ends of the laser particle size analyzer. With the starting position of the nozzle as the coordinate origin, establish an X-Y plane Cartesian coordinate system . Since the atomization area...

Embodiment 3

[0041] In this example, on the basis of the pneumatic small particle size atomizing nozzle provided in Example 2, the hole diameter r of the liquid outlet at the end of the different liquid outlet pipelines, the end of the liquid outlet pipeline and the nozzle are tested in the same way. The effect of the distance d between the droplets on the atomization effect.

[0042] First of all, 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 small particle size atomizing nozzle, the main parameters of which are: the liquid outlet pipe The aperture r of the liquid outlet at the end of the road is 1mm, the inner diameter of 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°.

[0043] Adjust the distance d between the end of the...

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Abstract

The invention relates to an atomization spray head, and particularly relates to a pneumatic small-particle-size atomization spray head. The pneumatic small-particle-size atomization spray head comprises a spray head main body, a pneumatic knife assembly and an end cover installed on the spray head main body, wherein a liquid outlet pipeline used for spraying out liquid drops is arranged on the spray head main body; the end part of the liquid outlet pipeline is encircled by the end cover to form a gas chamber, and a nozzle corresponding to the end part of the liquid outlet pipeline in positionis formed in the end cover; the pneumatic knife assembly is used for forming gas flow sprayed to the space between the end part of the liquid outlet pipeline and the nozzle in the gas chamber; the nozzle is used for spraying out the liquid drops and gas; and the hole diameter of a liquid outlet port in the end part of the liquid outlet pipeline is r, the distance between the end part of the liquidoutlet pipeline and the nozzle is d, and the ratio of d to r is 1: 2 to 1.5: 1. The pneumatic small-particle-size atomization spray head disclosed by the invention does not need a high working pressure, and is capable of providing stable-particle-size mist drops, and low in system cost.

Description

technical field [0001] The invention relates to an atomizing spray head, in particular to a pneumatic small particle size atomizing spray head. 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...

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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