SU852368A1 - Sprayer - Google Patents

Description

The invention relates to liquid spraying devices, namely to spraying devices with a tangential fluid supply and can be used in everyday life for spraying aqueous solutions of 5 pesticides in agriculture and white-paper solutions in construction.

A known nozzle for spraying liquid, comprising a housing with a swirl chamber and a core — a screw swirl 10 with channels [1].

However, the supply of fluid to the swirl chamber through the channels of the screw swirl leads to a pressure drop due to the large hydraulic resistance 15. As a swirl, mixing of fluid flows moving at different speeds and in different directions occurs, since the swirl chamber has a cylindrical shape. This also 20 leads to a drop in pressure and a deterioration in spray quality. The narrow annular gap between the nozzle of the outlet nozzle and the protrusion of the swirl is a large hydraulic resistance and leads to a drop in pressure and a deterioration in spray quality. In addition, the design of the nozzle is complex and requires precise adjustment.

A sprayer is also known, comprising a housing with a nozzle, a cone-shaped swirl chamber, a tangential inlet channel made in the housing wall and placed in the housing with the possibility of longitudinal movement of the core [2].

This sprayer is the closest to the proposed technical essence and the achieved result.

A disadvantage of the known atomizer is that when fluid is supplied to the nozzle in the swirl chamber, fluid flows are mixed that change the speed and direction of movement, which leads to a decrease in the working pressure and uneven distribution of the sprayed liquid over the cross section of the torch. As a result, productivity decreases and spray quality deteriorates.

The purpose of the invention is to increase the productivity of the atomizer and the quality of the spray.

This goal is achieved by the fact that in the atomizer comprising a housing with a nozzle, a cone-shaped swirl chamber, a tangential inlet channel made in the body wall and a core located in the housing with the possibility of longitudinal movement, the tangential inlet channel is located at an angle to the axis of the atomizer of less than 90 ° from the supply side fluid flow, while the core is made with a helical groove with an inclination angle equal to the angle of inclination of the tangential inlet channel.

The drawing shows the proposed sprayer, General view.

It contains a housing 1 with a nozzle 2, a cone-shaped swirl chamber 3, made in the wall of the housing 1 tangential inlet channel 4 and placed in the housing 1 with the possibility of longitudinal movement of the core 5.

The tangential inlet channel 4 is located at an angle to the axis of the sprayer less than 90 ° from the supply side of the fluid flow, while the core 5 is made with a helical groove 6 with an angle equal to the angle of inclination of the tangential inlet channel 4.

The sprayer operates as follows.

The fluid along the tangential channel 4 enters the nozzle at an angle of less than 90 ° to its longitudinal axis. The specified angle creates an axial component of the velocity of the fluid, directed to the exit of the nozzle 2, and gives the fluid a form of motion. This movement is also facilitated by a helical groove 6, along which the flow of incoming fluid moves. Having made one revolution along the annular gap, the flow is diverted by one step and is not mixed with the new flow.

The presence of the specified helical grooves and the location of the tangential channel 4 at an angle of less than 90 ° to the axis of the atomizer reduces the loss of fluid pressure in the atomizer 5, which leads to energy savings and improves spray quality, which reduces the complexity of applying whitewash solutions.

Claims (2)

This means that the core is made with a screw groove with an inclination angle equal to the angle of inclination of the tangential feed channel. The drawing shows the proposed spray, a General view. It includes a housing 1 with a nozzle 2, a cone-shaped swirl chamber 3, a tangential supply channel 4 arranged in the wall of the housing 1 and a core 5 placed for longitudinal movement in the body 1. The tangential supply channel 4 is angled to the sprayer axis less than 90 from the side the flow of fluid, while the core 5 is made with a helical groove 6 with an angle of inclination equal to the angle of inclination of the tangential supply channel 4. The sprayer works as follows. Liquid through the tangential channel 4 enters the atomizer at an angle less than 90 ° to its longitudinal axis. This angle creates an axial component of the velocity of the fluid, directed toward the exit from the nozzle 2, and gives the fluid a shape of motion. This movement is also facilitated by the screw groove 6, along which the flow of the incoming fluid moves. Having made one revolution in the annular gap, the flow is diverted by one step and not mixed with the newly entering flow. The presence of the specified helical groove and the location of the tangential channel 4 at an angle less than 90 ° to the axis of the sprayer reduces the pressure loss of the liquid in the sprayer, which leads to energy savings, and improves spray quality, which reduces the labor intensity when applying whitewash solutions. The invention includes an atomizer comprising a housing with a nozzle, a cone-shaped vortex chamber, a tangential feed channel formed in the housing wall and a core longitudinally displaced in the housing that is characterized in that, in order to improve sprayer performance and spray quality, the feed channel is located under the angle to the axis of the sprayer is less than 90 ° from the side of the flow of the fluid, while the core is made with a helical groove with an angle of inclination equal to the angle of inclination of the feed channel. Sources of information taken into account during the examination 1. USSR author's certificate No. 585883, cl. B 05B 1/12, 1974. 2. USSR author's certificate number 259543, cl. B 05B 1/32, A 01 M 7/00, 1968 (prototype).