RU2806961C1 - Device for spraying aerosol mixture - Google Patents

Abstract

FIELD: aerosols.

SUBSTANCE: used when applying aerosol materials. A device for spraying an aerosol mixture includes a housing made in the form of a supply fitting with a central hole, a nozzle and a mixing chamber. The body contains a coaxial cylindrical sleeve rigidly connected to it with an internal longitudinal through hole. The spraying device is equipped with a tubular base, inside of which there is an annular thickening. The tubular base has an internal diameter greater than the outer diameter of the sleeve, and an internal thread located up to the first end of the base, and an external thread at the other end of the base. The base is equipped with a normally located pipe, shifted along the longitudinal axis of the base relative to the internal annular thickening towards the nozzle. The body is equipped with an external thread that matches the internal thread of the base. The nozzle is made in the shape of a glass with an internal cone-shaped through hole and an internal thread that corresponds to an external thread at the other end of the base.

EFFECT: adjusting the diameter of the beam of sprayed material.

1 cl, 1 dwg

Description

The invention relates to devices for spraying substances in an aerosol state.

A device for sputtering is known [1], which is equipped with a sputtering focusing nozzle, made in the form of a truncated sphere with double walls connected in the cross-sectional plane and forming a storage cavity communicating with the concentrator channel, and capillary holes are made in the inner wall of the nozzle. The spraying device consists of an oscillation motor, a frequency-reducing pad, a reflective pad, a concentrator with an internal channel and an input, which together form an ultrasonic vibration emitter. At the working end of the concentrator there is fixed a spray focusing nozzle, made in the form of a truncated sphere formed by two walls - outer and inner, between which there is a gap. In the cross-sectional plane, the walls are rigidly and hermetically connected to each other, due to which a storage cavity of constant volume is formed between them (due to the existing gap), communicating with the concentrator channel. The inner wall of the nozzle is equipped with capillary holes, the location of which corresponds to a constant diameter of the beam of sprayed material.

The disadvantage of the analogue is the lack of adjustment of the diameter of the beam of sprayed material.

The closest to the proposed solution is the vortex nozzle [2], which refers to a means of spraying liquids and solutions. The swirl nozzle contains a housing with a swirl chamber and a nozzle, the housing is made in the form of a supply fitting with a central hole, and rigidly connected to it and a coaxial cylindrical sleeve with internal threads and an expansion chamber coaxial to the housing, while coaxial to the housing, in its lower part it is connected to liner through a thread, a nozzle made in the form of an inverted glass, in the bottom of which there is a turbulent swirler of the fluid flow with at least two inputs inclined to the nozzle axis in the form of cylindrical holes located in the end surface of the nozzle, where there is also a central cylindrical throttle hole connected to mixing chamber of the nozzle, connected in series with the diffuser outlet chamber, a divider is installed in the diffuser outlet chamber, made in the form of at least three spokes, each of which is fixed with one end on the outer surface of the diffuser outlet chamber, perpendicular to its forming surfaces, and the other in the surface of the body rotation, for example a ball, the axis of which coincides with the axis of the diffuser output chamber, and the body of rotation itself is located in the lower part behind the cut of the diffuser output chamber, a diffuser is attached to the end surface of the cylindrical sleeve, coaxial with the body, coaxial with the diffuser chamber, the cut surface of which lies in plane located below the surface of the body of rotation of the divider, and the divider is made in the form of two spokes, each of which is fixed with one end on the outer surface of the diffuser outlet chamber, perpendicular to its forming surfaces, and the other on the axis on which, with the possibility of rotation, the body of rotation is installed , made in the form of a ball, the center of which lies on the axis of the diffuser outlet chamber, while the surface of the body of rotation, made in the form of a ball mounted on the axis, with the possibility of rotation, is made perforated, to the surface of the body of revolution, made in the form of a ball mounted on the axis , with the possibility of rotation, elements are installed that carry out its rotation, for example, in the form of segments of helical blades, on the inner surface of the central cylindrical throttle hole located in the end surface of the nozzle, helical grooves are made to provide additional twisting of the fluid flow, while in the body of rotation, the axis of which coincides with the axis of the diffuser output chamber, and the body of rotation itself is located in the lower part, behind the cut of the diffuser output chamber, resonant recesses are made in the form of a cylindrical surface of different diameters and lengths, performing the functions of Helmholtz resonators, the dimensions of which are determined by the required flow pulsation frequency liquids to increase the fineness of the spray torch. To the diffuser, the axis of which coincides with the axis of the diffuser output chamber, at the outlet, at its cut, a ring of a triangular profile is coaxially attached, connected to a resonance plate, the outlet of which coincides with the outlet of the ring of a triangular profile, and to the resonance plate, coaxially to its outlet , a cylindrical shell 20 with a perforated disk at the outlet is attached, while the resonant recesses, made in the form of a cylindrical surface of different diameters and lengths and performing the functions of Helmholtz resonators, the dimensions of which are determined by the required pulsation frequency of the liquid flow to increase the fineness of the sprayed torch, are made: in ring of a triangular profile at an angle of 45° to the axis of the device, and in the resonant plate - perpendicular to the axis of the device.

This invention, in its essential features, is the closest to the claimed technical solution and therefore was chosen by the authors as its prototype.

The disadvantage of the technical solution of the prototype is the lack of adjustment of the diameter of the beam of sprayed material.

The problem to be solved by the proposed technical solution is to regulate the diameter of the focused aerosol jet.

The problem is solved by the fact that a device for spraying an aerosol mixture containing a housing, which is made in the form of a supply fitting with a central hole and a rigidly connected to it and coaxial cylindrical sleeve with an internal longitudinal through hole, a nozzle, a mixing chamber formed by the end of the sleeve and the nozzle, a base is introduced, which is a tubular structure, inside of which there is an annular thickening, with an internal diameter exceeding the outer diameter of the sleeve and an internal thread to the first end of the base, an external thread at the other end of the base, and equipped with a normally located branch pipe, offset along the longitudinal axis of the base relative to the internal annular thickening towards the nozzle, the body is equipped with an external thread that matches the internal thread of the base, and the nozzle is made in the shape of a glass with an internal cone-shaped through hole and an internal thread that matches the external thread at the other end of the base.

The design of a device for spraying an aerosol mixture is shown in Fig. 1, which indicates:

1 – device body;

2 – supply fitting;

3 – cylindrical sleeve;

4 – internal longitudinal through hole;

5 – nozzle;

6 – mixing chamber;

7 – base;

8 – annular thickening;

9 - internal thread

10 – first end of the base;

11 – external thread;

12 – other end of the base;

13 – side pipe;

14 – external thread of the body;

15 – internally conical opening of the nozzle;

16 – internal thread of the nozzle.

The device operates as follows.

The aerosol is transported into the inlet fitting 2 and moves through the internal longitudinal through hole 4 into the mixing chamber 6, formed by the end of the sleeve 3 and the nozzle 5. Compressed air also enters the mixing chamber 6, supplied to the side pipe 13. The compressed air focuses the aerosol, which through the internal the cone-shaped opening of the nozzle 15 creates a focused jet of aerosol. When the cylindrical sleeve 3 moves along the longitudinal axis when the body 1 rotates along the internal thread 9 of the base 7, the volume of the mixing chamber 6 changes, since the distance between the end of the cylindrical sleeve 3 and the nozzle 5 changes. As a result, the diameter of the focused aerosol jet is adjusted.

To confirm the functioning of the device, experimental studies were carried out using a prototype of the proposed device. The substrate for applying the aerosol was installed at an angle of 4° in the vertical plane, the distance traveled by the device for spraying the aerosol mixture in a straight line was 280 mm, and the distance from the substrate to the outer plane of the nozzle varied from 5 to 19 mm. The drawing speed was 10 mm/s. The distance inside the mixing chamber from the end of the sleeve to the nozzle varied from 14 to 18 mm. In this case, the width of the applied track and, accordingly, the diameter of the jet, focused at a distance of up to 19 mm from the nozzle, varied from 0.4 to 0.8 mm.

Sources of information used in compiling the description of the invention:

1. Pat. No. 489533, IPC V05V 17/06 (2000.01): V05V 17/06 (1975.10). Spraying device // E.G. Konovalov, N.M. Kolenko, I.I. Pogrebnyak, V.N. Prishchepov (RU) - No. 1885961; declared 02/26/1973; publ. 10.30.1975., Bull. No. 40.

2. Pat. No. 2669225, IPC B05B 17/06 (2006.01): B05B 17/06 (2018.08). Vortex nozzle // O.S. Kochetov (RU) – No. 2017138397; application 03.11.2017.; publ. 10/09/2018, Bulletin. No. 28.

Claims (1)

A device for spraying an aerosol mixture containing a housing, which is made in the form of a supply fitting with a central hole and a rigidly connected to it and coaxial cylindrical sleeve with an internal longitudinal through hole, a nozzle, a mixing chamber formed by the end of the sleeve and the nozzle, characterized in that a base is inserted into the device, which is a tubular structure, inside of which there is an annular thickening with an internal diameter exceeding the outer diameter of the sleeve, with an internal thread to the first end of the base, an external thread at the other end of the base, and equipped with a normally located branch pipe, offset along the longitudinal axis of the base relative to the inner annular thickening towards the nozzle, the body is equipped with an external thread that matches the internal thread of the base, and the nozzle is made in the shape of a glass with an internal cone-shaped through hole and an internal thread that matches the external thread at the other end of the base.