SU1380785A1 - Centrifugal atomizer - Google Patents

Abstract

The invention relates to a device for spraying a liquid and can be applied to agricultural sprayers when spraying liquid preparations. The goal is to simplify the design and extend the functionality. For this, in the centrifugal nozzle, the elastic shell is installed to form a sealed screw cavity with the core. The spray gun control means is designed as an external control pressure source communicated with the screw cavity through radial channels. The design allows you to smoothly adjust the spray and maintain automatically its spray angle constant. 1 il. with "(L

Description

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The invention relates to a device for spraying a liquid and can be applied, for example, in agricultural spraying machines when spraying liquid preparations.

The aim of the invention is to simplify the design and expand the functionality.

The drawing shows a nozzle, a general view.

The centrifugal nozzle contains a choke 1 for supplying a fluid, placed inside the body 2 with a nozzle 3, a core 4, covering its elastic helical sheath 5 with corrugations and means for adjusting the spray.

The elastic sheath 5 is installed to form with the core 4 a hermetic inner screw cavity 6 and with a housing 2 - an external screw cavity 7.

The spray gun control means is made in the form of an external control pressure source (not shown) communicated through a screw cavity nozzle 8 via radial channels 8 and 9,

Centrifugal nozzle works as follows.

The fluid through the nozzle 1 enters the outer screw cavity 7 formed by the housing 2 and the elastic sheath 4. After receiving additional rotation in the outer screw cavity 7, the liquid exits through the nozzle 3, forming a spray. The angle of the spray cone depends on the speed of movement of the fluid in the helical band (with increasing speed the angle of the spray cone increases). Therefore, if the angle needs to be increased with an external control pressure source, the volume of the inner screw cavity 6 increases, resulting in t, e, the volume of the outer screw cavity 7) decreases, and the speed

its movement increases, leading to an increase in spray angle.

The proposed design allows not only to smoothly adjust the spray pattern, but also to automatically maintain its spray angle constant. At given fluid pressures and external control pressures of cavities 7 and 6, they are in static equilibrium. In the event of a drop in fluid pressure, this equilibrium is disturbed and an increase in the volume of the inner screw cavity 6 and a decrease in the outer screw cavity 7 occurs, which leads to an increase in the velocity of the fluid and allows the spray angle to remain unchanged. When the pressure in the supply line increases, the opposite occurs: the volume of the internal screw cavity 6 decreases, which leads to an increase in the flow area of the liquid, and the latter, in turn, decreases the speed of the liquid in the external screw cavity 7. This all contributes keeping the spray angle constant.

Claims (1)

Invention Formula A centrifugal nozzle comprising a fluid supply nipple, a core housed inside the body, covering its elastic helical shell and spray gun adjustment means, which, in order to simplify the design and extend the functionality, the elastic shell is installed to form an airtight helical cavity with the core, and the means for regulating the spray cone is designed as an external control pressure source communicated with the screw cavity by means of a radial channel .