RU2545260C1 - Centrifugal wide-flare sprayer - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: centrifugal wide-flare sprayer comprises a casing with a vortex chamber and a sprayer insert, at that the casing is made with an inlet pipe having a hole, with an inlet cylindrical chamber coaxial to the pipe, a vortex chamber installed coaxially with the inlet chamber and made in the form of a cylindrical cup provided with at least three tangentially located holes on the side surface, their axes are tangential to the vortex chamber, i.e. there is a multi-channel tangential input; the sprayer insert with the outer diameter D₁ is installed coaxially with the vortex chamber, inside the insert there are three calibrated holes located in series and coaxial to each other and to the cylindrical surface of the vortex chamber: cone hole with diameter D of bottom base of truncated cone, central cylindrical hole with diameter d₂, and output cone hole. The screw thread is made on surface of the cone hole with diameter D of the bottom base of the truncated cone looking towards the vortex chamber.

EFFECT: higher efficiency of spraying.

2 dwg

Description

The invention relates to means for spraying liquids, solutions.

The closest technical solution to the claimed object is the nozzle according to the patent of the Russian Federation No. 2441708, F02C 7/24, containing a housing with a swirl chamber and a nozzle insert (prototype).

A disadvantage of the known nozzle is that it does not provide a wide spray pattern due to the insufficient degree of twist of the input fluid stream.

The technical result is an increase in spraying efficiency by increasing the spray pattern.

This is achieved by the fact that in a wide-flange centrifugal nozzle containing a housing with a swirl chamber and a nozzle insert, the housing is made with an inlet nozzle having an opening coaxial with it of the inlet cylindrical chamber, a swirl chamber located coaxially with respect to the inlet chamber and made in the form of a cylindrical a cup having at least three tangentially arranged openings on the side surface, the axes of which are located tangentially with respect to the swirl chamber, i.e. there is a single-channel tangential input, and a nozzle insert with an external diameter D ₁ is located coaxially with the swirl chamber, and three calibrated holes are made sequentially located and coaxial to each other and the cylindrical surface of the swirl chamber inside the insert: a conical hole with a diameter D of the lower base of the truncated cone, a central cylindrical a hole with a diameter of d ₂ and an outlet conical hole with a diameter of d ₃ , while the diameter d _{2 of the} central cylindrical hole of the nozzle insert is equal to Ameter of the upper base of the truncated cone of the conical hole.

In FIG. 1 shows a general view of a nozzle for spraying liquids; FIG. 2 - section of the turbulence chamber along the tangential multichannel input.

A centrifugal wide-torch nozzle consists of a housing 1 with an inlet pipe 4 having an opening 3, an inlet cylindrical chamber 9 coaxial with it, a swirl chamber 11 located coaxially with respect to the inlet chamber 9 and made in the form of a cylindrical cup 2 having, on the side surface, at least three tangentially located holes 10, the axes of which are located tangentially with respect to the swirl chamber 2, i.e. there is a one-channel tangential input.

Coaxial to the swirl chamber 11 is a nozzle insert 5 with an outer diameter D ₁ made of solid materials: tungsten carbide, ruby, sapphire. Three calibrated holes are made sequentially located and coaxial to each other and to the cylindrical surface of the turbulence chamber 11 inside the insert: a conical hole 6 with a diameter D of the lower base of the truncated cone, a central cylindrical hole 7 with a diameter of d ₂ and an exit conical hole 8 with a diameter of d _{3 of the} lower base of the truncated cone . The diameter d _{2 of the} central cylindrical hole 7 of the nozzle insert 5 is equal to the diameter of the upper base of the truncated cone of the conical hole 6, and also the diameter d _{2 of the} central cylindrical hole of the nozzle insert is equal to the diameter of the upper base of the truncated cone of the conical hole 6 and the diameter of the upper base of the truncated exit cone tapered bore 8.

Inside the liner 5 there are three calibrated holes arranged in series and aligned with each other and the cylindrical surface of the swirl chamber: a conical hole with a diameter D of the lower base of the truncated cone, a central cylindrical hole 7 with a diameter of d ₂ and an outlet conical hole 8 with a diameter of d _{3 of the} lower base of the truncated cone, the diameter d _{2 of the} Central cylindrical hole of the nozzle insert is equal to the diameter of the upper base of the truncated cone of the conical hole 6 and the diameter of the upper the base of the truncated cone of the outlet conical hole 8.

For the operation of the nozzle in optimal mode, the following ratios of its parameters are provided:

the ratio of the diameter d _{3 of the} outlet conical hole 8 of the nozzle insert 5 to the diameter of the central cylindrical hole 7 lies in the optimal range of values: d ₃ / d ₂ = 1.5 ÷ 2.5;

the ratio of the outer diameter D _{1 of the} nozzle insert 5 to the diameter D of the lower base of the truncated cone of the conical hole 6 of the insert 5 lies in the optimal range of values: D ₁ / D = 1.2 ÷ 1.8.

It is possible that on the surface of a conical hole 6 with a diameter D of the lower base of the truncated cone, facing side to the swirl chamber 11, a screw thread is made (not shown in the drawing).

Centrifugal wide-angle nozzle for spraying liquids works as follows.

The fluid is fed through the inlet 3, then passes into the inlet cylindrical chamber 9 and enters through a multi-channel tangential inlet through the openings 10 into the swirl chamber 11, made in the form of a cylindrical cup 2. A rotating fluid flow from the swirl chamber 11 passes through a calibrated conical hole 6 of the nozzle insert 5, the central cylindrical hole 7 and the exit conical hole 8 of the nozzle insert 5, as a result of which a spray of liquid is formed, the root angle of which is determined are the value of the angle at the apex of the cone of the outlet conical opening 8 of the nozzle insert 5.

The proposed design of a wide-torch nozzle with a central cylindrical bore diameter of 7 equal to 9 mm at a liquid working pressure of 150 ... 250 kPa provides an opening angle of the water plume up to 150 ° and maintains the plume stability at a liquid pressure in front of nozzles from 40 kPa and higher, while the nozzle performance Depends on the fluid pressure at the inlet inlet.

Claims (1)

A centrifugal wide-torch nozzle comprising a housing with a swirl chamber and a nozzle insert, the housing being made with an inlet nozzle having an opening coaxial with it of the inlet cylindrical chamber, and a swirl chamber located coaxially with respect to the inlet chamber and made in the form of a cylindrical glass having lateral surface, at least three tangentially located holes, the axes of which are located tangentially with respect to the swirl chamber, i.e. there is a one-channel tangential input, and a nozzle insert with an external diameter D ₁ is located coaxially with the swirl chamber, three calibrated holes are made sequentially located and coaxial to each other and the cylindrical surface of the swirl chamber: a conical hole with a diameter D of the lower base of the truncated cone, a central cylindrical hole diameter d ₂ and an outlet tapered hole with a diameter d ₃ of the lower base of the truncated cone, the diameter d ₂ of the central cylindrical Verstov nozzle insert is equal to the diameter of the upper base of the truncated cone of the conical hole and the diameter of the upper base of the truncated cone of the conical outlet hole, characterized in that the surface of the conical hole with diameter D of the lower base of the truncated cone facing towards the chamber to swirl, is formed a helical thread.

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