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Multistage atomization gas-liquid two-phase large-caliber mist nozzle

An atomized gas and large-diameter technology, which is applied in the direction of liquid spraying devices and spraying devices, can solve the problems of uneven spray distribution and unequal liquid volume, and achieve uniform droplet distribution, reduced gas consumption, and simple structure. Effect

Inactive Publication Date: 2014-06-18
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the two-phase swirl large-diameter fine mist nozzle greatly improves the atomization effect, due to the unequal pressure on the contact surface between the air flow and the liquid, the amount of liquid ejected from each nozzle hole at the end of the nozzle is unequal
[0008] In addition, for all porous nozzles (whether they are porous single-liquid atomizing nozzles or porous gas-liquid two-phase atomizing nozzles), there is always the phenomenon of uneven spray distribution between the two atomizing jets, and this problem has not been solved so far. good solution

Method used

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  • Multistage atomization gas-liquid two-phase large-caliber mist nozzle

Examples

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Embodiment 1

[0035] A multi-stage atomizing gas-liquid two-phase large-diameter fine mist nozzle. Such as figure 1 , image 3 and Figure 5 As shown, the nozzle includes an inlet pipe 1 , a liquid inlet pipe 2 , a top cover 3 and a swirl tube 4 .

[0036] Such as figure 2 As shown, the shape of the liquid inlet pipe 2 is that the upper part is a small cylinder, the middle part is a large cylinder and the lower part is a truncated cone; the center of the liquid inlet pipe 2 is provided with a through hole, and the through holes are sequentially from top to bottom. The straight pipe section 5, the reducer pipe section 6 of the Venturi pipe, the throat section 7 of the Venturi pipe, the expanding pipe section 9 of the Venturi pipe and the lower straight pipe section 10 are composed.

[0037] Such as figure 1 and Figure 5 As shown, the swirl tube 4 is composed of a hollow cylinder in the upper section and a hollow truncated cone in the lower section.

[0038] Such as figure 1 and F...

Embodiment 2

[0044] A multi-stage atomizing gas-liquid two-phase large-diameter fine mist nozzle. Except following technical statement, all the other are with embodiment 1:

[0045] The distance between the outer wall of the large cylinder of the liquid inlet pipe 2 and the inner wall of the hollow cylinder of the swirl tube 4 is 5-8 mm; the minimum distance of the annular seam 11 is 0.7-1.0 mm.

[0046] The cone angle of the frustum of the liquid inlet pipe 2 is 45-50°; the diameter of the upper straight pipe section 5 of the liquid inlet pipe 2 is 10-15 mm.

[0047] The cone angle of the hollow frustum of the cyclone 4 is 30 ~ 35 °

[0048] Such as Figure 5 As shown, the small cylinder of the liquid inlet pipe 2 is composed of two sections of cylinders whose diameter is small at the top and large at the bottom; the fixed connection method is threaded connection; There is a sealing ring at the connection.

[0049] The compressed air in this specific embodiment enters the swirl cylind...

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Abstract

The invention relates to a multistage atomization gas-liquid two-phase large-caliber mist nozzle. According to the technical scheme, the middle of a small cylinder body of a liquid inlet pipe (2) is fixedly connected with the center of a top cover (3), and a large cylinder body of the liquid inlet pipe (2) and a conical table of the liquid inlet pipe (2) are located in a rotational flow cylinder (4). The outer wall of the large cylinder body of the liquid inlet pipe (2) has a distance of 3-8 mm with the inner wall of a hollow cylinder body of the rotational flow cylinder (4). The minimum distance of a circular seam (11) formed between the outer wall of the conical table of the liquid inlet pipe (2) and the inner wall of a hollow conical table of the rotational flow cylinder (4) is 0.3-1 mm. The upper portion of the hollow cylinder body of the rotational flow cylinder (4) is horizontally provided with an air inlet pipe (1), and one end of the air inlet pipe (1) penetrates through a shell of the rotational flow cylinder (4) and is tangent with the outer wall of the small cylinder body of the liquid inlet pipe (2). The outer diameter of the air inlet pipe (1) is the difference between the inner diameter of the hollow cylinder body of the rotational flow cylinder (4) and the outer diameter of the small cylinder body of the liquid inlet pipe (2). The air inlet pipe (1) is located between the top cover (3) and the large cylinder body of the liquid inlet pipe (2). The multistage atomization gas-liquid two-phase large-caliber mist nozzle has the advantages that the structure is simple, mist drops are evenly distributed, and the nozzle cannot be blocked.

Description

technical field [0001] The invention belongs to the technical field of atomizing nozzles. Specifically relates to a multi-stage atomization gas-liquid two-phase large-diameter fine mist nozzle. Background technique [0002] At present, there are two types of atomizing nozzles: single-liquid atomizing nozzles and gas-liquid two-phase atomizing nozzles. Single-liquid atomizing nozzles are generally simple in structure, and can form finer sprays by hydraulic pressure without using compressed air. Air-liquid two-phase atomizing nozzles require an air source to provide compressed air and a liquid flow channel to deliver the liquid by pressurization, equipped with siphon delivery or gravity delivery. [0003] Whether it is a single-liquid atomizing nozzle or a gas-liquid two-phase atomizing nozzle, the function is to produce a very fine atomization effect. The single-liquid atomizing nozzle mainly relies on the surface tension and the friction between the liquid and the still a...

Claims

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Application Information

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IPC IPC(8): B05B7/04
CPCB05B7/0458B05B7/0491
Inventor 向晓东秦显显马驰王浩刘海李鑫
Owner WUHAN UNIV OF SCI & TECH
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