RU2445547C1 - Kochetov's radial-flow sprayer - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: proposed sprayer comprises casing with auger pressed therein and fluid feed union. Said casing consists of two aligned and coupled cylindrical sleeves. larger-diameter and smaller-diameter sleeves. Note here that smaller-diameter auger is fitted aligned inside said sleeve and rigidly coupled with its inner surface, for example, press-fitted therein. Note also that auger outer surface represents a screw groove while one central through bore is made inside said auger and, at least, two rows of through bores are arranged concentrically along the circumference. Note that every said row has, at least, three bores while bore diameters decrease from central bore to peripheral bores. Larger-diameter sleeve accommodates union rigidly secured therein, for example, by thread joint, via tight gasket. Mind that said union has cylindrical bore changing into axially symmetric diffuser communicated with cylindrical chamber formed by smaller-diameter sleeve inner surface and auger face surface.

EFFECT: higher efficiency of spraying.

2 cl, 1 dwg

Description

The invention relates to means for spraying liquids and solutions and can be used in engine building, chemical and food industries.

The closest technical solution to the claimed object is the nozzle on.with. USSR No. 306270, F02C 7/24 from 04.01.70, comprising a housing with a chamber, into which the screw is pressed in, with a throttle hole made in the bottom of the housing, and a fitting with a cylindrical hole, a diffuser and a gasket (prototype) is placed in the upper part.

A disadvantage of the known acoustic nozzle is that it does not provide a high degree of atomization.

The technical result is an increase in spraying efficiency.

This is achieved by the fact that in a centrifugal nozzle containing a housing into which the screw is pressed in and a fitting for supplying fluid, the housing consists of two coaxial, interconnected cylindrical bushings: a larger diameter sleeve and a smaller diameter sleeve, while inside the smaller diameter sleeve coaxially to it, there is a screw rigidly connected to its inner surface, for example, pressed into it, the outer surface of the screw being a helical groove, and inside the screw there is one central through hole and at least two through holes concentrically arranged around the circumferences of the row, with at least three holes made in each row, and the hole diameters decrease from the central hole to the peripheral ones, and a fitting rigidly fixed in it is located in the larger sleeve , for example, through a threaded connection, through a sealing gasket, while a cylindrical hole is made coaxially inside the fitting, passing into an axisymmetrically located diffuser, which is connected to the cylinder cal chamber formed by the inner surface of the smaller diameter sleeve and the end surface of the screw.

The drawing shows a General view of the nozzle for spraying liquids.

The centrifugal nozzle consists of a housing consisting of two coaxial, interconnected, cylindrical bushings: bushings 5 of a larger diameter and bushings 4 of a smaller diameter. Inside the sleeve 4 of a smaller diameter, coaxial to it, is a screw 1, rigidly connected to its inner surface, for example, pressed into it. The outer surface of the screw 1 is a helical groove with a right (or left) thread. Moreover, between the inner surface of the sleeve 4 of a smaller diameter and the outer surface of the screw 1, a helical external cavity 3 of the screw 1 is formed.

Inside the screw 1, coaxially to it, a central hole 2 is made, like a smooth cylindrical throttling hole.

In the sleeve 5 of a larger diameter, coaxially to it, there is a fitting 7, rigidly fixed therein, for example by means of a threaded connection, through a sealing gasket 6. Inside the fitting 7, a cylindrical hole 8 is coaxially made, passing into an axisymmetrically located diffuser 9, which is connected to the cylindrical chamber 10 formed by the inner surface of the sleeve 4 of smaller diameter, and the end surface of the screw 1.

In the screw 1 there is one central through hole 2 and at least two rows of through holes 11 concentrically arranged around the circumferences, with at least three holes made in each row. The values of the diameters of the holes are reduced from the Central hole 2 to the peripheral, so that at the beginning of the plume the sprayed liquid stream has the highest speed.

A centrifugal nozzle for spraying liquids works as follows.

The liquid is supplied through a cylindrical hole 8 of the nozzle 7 into the diffuser 9, and from it into the chamber 10, from which it simultaneously flows under pressure in two directions: firstly, into the screw external cavity of the screw 1, forming an external rotating fluid flow, and secondly , in the Central hole 2 and in the peripheral throttling holes 11, forming a continuous flow.

At the exit of the nozzle, there are two fluid flows, one of which is a rotating turbulent type and the other is continuous, which, depending on pressure and geometric dimensions, can be either laminar or turbulent.

In the interaction of the rotating and continuous flows at the outlet of the nozzle, an additional crushing of liquid droplets occurs due to their collision in these liquid flows.

The nozzle screw 1 can be made of solid materials: tungsten carbide, ruby, sapphire.

At an average pressure supplied through a cylindrical hole 8 of the liquid under a pressure of 6 ... 9 MPa, spraying is provided from 400 to 1000 kg / h of liquid. The nozzle is easy to manufacture and maintain.

Claims (2)

1. A centrifugal nozzle containing a housing into which the screw is pressed in and a fitting for supplying fluid, characterized in that the housing consists of two coaxial, interconnected cylindrical bushes: a larger diameter bush and a smaller diameter bush, while the inside of the smaller diameter is coaxially it has a screw rigidly connected to its inner surface, for example, pressed into it, and the outer surface of the screw is a helical groove, and inside the screw there is one central through hole and, at the edge at least two through holes concentrically arranged around the circumferences, with at least three holes made in each row, and the hole diameters decrease from the central hole to the peripheral holes, and a fitting rigidly fixed in it is located coaxially in the larger sleeve, for example , through a threaded connection through a sealing gasket, while inside the nozzle a cylindrical hole is made coaxially, passing into an axisymmetrically located diffuser, which is connected to the cylindrical second chamber formed by the inner surface of the smaller diameter sleeve and the end surface of the screw. 2. The centrifugal nozzle according to claim 1, characterized in that the nozzle screw is made of solid materials: tungsten carbide, ruby, sapphire.