SU1519783A1 - Pneumatic injector - Google Patents

Abstract

This invention relates to a technique for the spraying of viscous liquids and can be used in heat and mass transfer apparatus in the chemical, energy and other fields of industry for the production of fine aerosol. The purpose of the invention is to improve the quality of spraying of viscous liquids. For this, the spraying element is designed in the form of a spring with hollow coils having radial holes facing inter-turn gaps that form channels for supplying fluid to the gas flow. The first coil of the spring along the movement of the gas flow is placed in the gas nozzle to communicate its cavity with the gas nozzle cavity. 1 il.

Description

one

(21) 4334102 / 23-05

(22) 11/26/87

(46) 11/07/89. Bul № 41 (72) G. I. Melkov

(53) 66.069.83 (088.8)

(56) USSR Author's Certificate No. 822914, cl. B 05 B 7/02, 1979.

Pazy DG and others. Spraying devices in the chemical industry. -M. Chemistry, 1975, p. 124, Fig. 606.

(54) PNEUMATIC NOZZLE

(57) The invention relates to the technique of spraying viscous liquids and can be used in heat and mass transfer devices in the chemical, energy, and other industries to obtain a finely dispersed aerosol. The purpose of the invention is to improve the quality of dispersed with viscous liquids. For this, the sawing element is designed in the form of a spring with hollow coils having radial spans facing the interturn clearances forming the fluid supply channels to the gas flow. The first coil of the spring, while moving the gas flow, is placed in the gas nozzle to communicate its cavity

with a spine of gas nozzle 2 silt,

,

The invention relates to a technique for spraying viscous liquids and can be used in heat and mass transfer devices in the chemical, energy and other industries to produce a finely dispersed aerosol.

The purpose of the invention is to improve the quality of atomization of viscous liquids.

FIG. 1 image pneumatic nozzle section; in fig. 2 — node I in FIG. one.

The nozzle includes a housing I with a gas supply nozzle, terminated by a gas nozzle 3, and a tube 4 installed along the axis of the housing 1 for supplying a liquid, having at its end a spraying element in the form of a cylindrical spring 5 made of tube 6 with hollow adjacent coils ; having radial holes 7, facing the interturn clearances 8, forming channels for supplying liquid to the gas flow. The first, during the movement of the gas flow, the coil of the spring 5 is placed in the gas nozzle 3 for communication of ACCURING coils with the cavity of the gas nozzle and connected to the deflector 9.

The nozzle works as follows.

When applying to the nozzle, the atomizing gas mostly goes to create a high-speed jet leaving the nozzle 3, and partially enters from the internal cavity of the gas nozzle 3 into the cavity of the coils of the spring 5 and through the holes 7 enters the interturn clearances 8. Into the internal cavity of the spring 5, under the action of the pressure of the liquid, the spring 5 is stretched and the liquid passes through the interturn clearances 8, where it is increased by bubbles of gas coming from the openings 7. Gas bubbles. being distributed in a liquid, cause a significant increase in surface energy, i.e. the fluid is ruptured before it expires, which leads to a decrease in effective viscosity. At the same time, the liquid jet coming out of the inter-turn ly.wp.i 8, as if boils, this leads to its efficient fragmentation flowing around the spring 5

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high gloss gas flow. Dirt crushing of the gas-liquid mixture is carried out on the surface of the deflector 9

The advantage of the proposed pneumatic filter is the possibility of spraying viscous liquids.

Performing a gas supply to the jet of liquid emerging from the inter-turn gap, just before its output to the gas flow, will allow more evenly saturate the jet with gas bubbles and prevent separation of liquid and gas and gas desorption from the jet of liquid before spraying, which reduces losses gas and improves spray quality.

The proposed nozzle has a small tendency to clogging and the ability to self-cleaning.

The nozzle has the property of automatically maintaining within certain limits (the flow rate of liquid and gas and its maintenance at the optimum level, due to the fact that the increase of the flow rate indicator. V.L.

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f DHIIIIllIcy.iHpi tn (HHiiio Committee on the invention of m and discoveries at the SCST (WX 1

11.50.ЧГ1. MoiKiin, F-35, Raushsk nab, d. 4/5 × | .m U i n and .1I D1-1-1 (; ij combination "Patent, t, Uzhgoria. V.i G.chg. Prim. 101

Yes, gas increases pressure on the deflector, which in turn stretches the spring, increasing the inter-turn gap, while increasing fluid flow.

Claims (1)

Invention Formula A pneumatic forsuic comprising a housing with a gas nozzle, a fluid supply pipe located along the axis of the housing, having a cutting element at its ends with fluid supply channels into the gas flow and deflector connected to the tube cavity, which in order to improve the quality of atomization liquid fluids, the sawing element is designed as a spring with hollow coils having radial holes facing inter-turn gaps that form channels for supplying fluid to the gas flow, the first one being remescheni gas stream coil spring disposed in the gas nozzle message its cavity with the cavity of the gas nozzle. 1