SU1664229A1 - Spraying machine - Google Patents

Abstract

The invention relates to forestry, in particular to devices for chemical forest care. The purpose of the invention is to improve the quality of work by creating a directional air plume of the sprayed preparation and reducing its consumption. The sprayer includes a housing 1, an electric motor 2, an atomizing disc 4 forming a flat nozzle 11 and a collection of 7 drops. The blades 5 of the blower 3 are mounted on the upper peripheral part of the disk 4 with a gap between the disk and the lower ribs of the vanes 5. The droplets collection is made in the form of an annular chamber 7 connected to the channels for collecting the droplets 15 and for discharging air 18. The air exhaust duct is located under the disk and provided with a filter 17. The disk in the central part has holes 19. The annular chamber communicates with the diffuser of the blower 3 and its walls are inclined to the plane of rotation of the disk at an acute angle. During the operation, the droplets that fall off the edge of the rotating disk under the action of centrifugal force and the air flow created by the blades of the blower rush to the forming nozzle. In this case, part of the droplets (larger), hitting the walls of the collection chamber, flow under the force of gravity along the collecting channel of the drops into the container, and satellite drops (of small diameter) are captured by the air flow, which is constantly circulated in the ring collector due to pressure differences in the diffuser and at the central opening of the blower, and, settling on the filter, also flow into the tank. Drops falling on the side and bottom walls of the nozzle also flow there. 2 hp f-ly, 2 ill.

Description

The inlet of the inlet 9 of the blower 3 and the fitting 10. On the side surface of the housing of the blower 3 there is a flat nozzle 11 with a groove 12 and apertures 13 in the bottom wall of the nozzle. In the housing 1 there is an opening 14 connecting the collection 7 with the channel 15 leading into the container for the collected preparation. A filter 17 is placed in the tank 16. The tank 16 is connected to the suction channel 18. There are holes 19 in the spray disk 4 connecting the inlet of the fan with the channel 18. The angle of inclination of the walls of the annular chamber to the plane of rotation of the disk 4 is chosen such that Drops of the preparation, tearing off the edge of the disk 4 and not reaching the nozzle 11, could roll down the walls into the container 16 under the influence of gravity.

Sprayer works as follows.

The spraying disk 4 is driven into rotation by the electric motor 2. Due to the blades 5 installed on the disk 4, air is drawn in through the inlet 9. In this case, in its central part, closer to the center of rotation of the disk 4, a vacuum is created, i.e. the area of reduced pressure A (see Fig. 1), and along the periphery of the disk 4 in the diffuser 6 - the area of increased pressure B, -a due to the fact that the collector 7 is connected to the diffuser 6, an increased pressure is created in the collector 7 and through the hole 14 is transferred to the intake channel 15 and the tank 16. In turn, the bypass channel of the collector 7 is connected via the opening 19 to the reduced pressure area A of the inlet to the fan. As a consequence, the circulation air pressure is established in the collector 7 and the associated channels 15 and 18, and the air flow moves in the direction from the collector 7 to the inlet 9 of the blower 3. To prevent air from flowing through the gap between the lower plane of the disk 4 and the housing 1 the labyrinth seal is made 20. When the working fluid is supplied through the fitting 10, it falls on the upper plane of the disk and under the action of centrifugal forces evenly spreads over it with a thin film and breaks off its edges to form droplets in most e its approximately equal size {monodispersed) and a small portion by weight of the satellite drops considerably smaller. Part of the droplets formed, falling into the target of the nozzle 11, flies out in the air stream created by the blower 3 and formed by the flat nozzle 11. The angle of the nozzle solution depends on the treatment object. For more accurate application of the drug, it is advisable to create a narrowly directed airborne spray. As practice has shown, in order to form such a jet, the angle of the nozzle solution should be less than 60 °. Another part of the droplets formed by centrifugal force strikes an oblique

the wall 8 of the droplet collector and under the action of gravity and the air flow of air coming from the diffuser 6 flows through the channel 15 into the container 16. The air flow passing through the gap between the disk 4 and

the inclined wall 8, captures the formed satellites and drags them into the channel 15 and further into the tank 16. In order to prevent the satellite satellites from falling together with the air stream into the suction channel

18 at the outlet of the tank 16 is installed a filter 17, which delays these drops. Drops passing through the nozzle 11 and falling on the side and bottom walls of the nozzle are collected in the annular groove 12

and through the holes 13, under the action of the air flow passing through the channel 15, enter the tank 16.

Claims (2)

Invention Formula 1 Sprayer containing a reservoir for the working fluid, a housing with a dispensing disk located in it, an electric drive and a spatula blower, a collection of small drops made in as an annular chamber communicated with a longitudinal annular channel for collecting droplets and a precipitator, characterized in that, in order to improve the quality of work by creating directional air the torch of the sprayed preparation and reduction of its consumption, it is equipped with a casing with an axial bore and a flat radial slot installed under the spray disc, with the blades of the blower mounted on the peripheral part of the sawing disc with the possibility of forming a gap with the surface of the latter, and through the disc there are through openings, precipitator is made as 0 chambers with a mesh filter, connected by a channel with through holes of the sawing disk, while the walls of the annular chamber are inclined to the plane of the disk at an acute angle, e 2. The sprayer according to claim 1, characterized in that channels are made in the casing, communicating a cavity of a flat radial slot with a cavity of a longitudinal annular channel. 11 12 Editor T.Ivanova Compiled by N.Evseev Tehred M. Morgental FIG. 2 Proofreader O. Tsiple