RU2497043C1 - Centrifugal wide-fan sprayer - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: sprayer comprises case with swirling chamber and nozzle insert. Note here that said case has inlet pipe with bore. It includes also inlet cylindrical chamber, swirling chamber aligned with inlet chamber and composed of cylindrical barrel, its side surface being provided with three tangential holes. Axe of said holes are located tangentially to swirling chamber, that is, there is a multichannel tangential inlet. Nozzle insert OD D₁ is arranged coaxially with swirling chamber. Three calibrated orifices are arranged aligned with swirling chamber cylindrical surface and with each other: taper orifice with bottom base diameter D, central cylindrical orifice with d₂ and outlet taper orifice with loser base diameter d₃ of truncated cone. Note here that diameter d₂ of central cylindrical orifice of nozzle insert equal that of truncated cone upper base and to that of upper base of outlet taper orifice truncated cone.

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.

Figure 1 shows a General view of the nozzle for spraying liquids, figure 2 is a cross section of the swirl chamber along the tangential multi-channel 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 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 Considerations frustoconical tapered outlet opening 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;

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

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

The proposed design of a wide-torch nozzle with a central cylindrical bore diameter of 7 equal to 9 mm at a fluid working pressure of 150 ... 250 kPa provides an opening angle of the water plume up to 150 ° and preserves the plume stability at a liquid pressure in front of the nozzles of 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, characterized in that 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 with a 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 of the cylindrical hole of the 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.

Images