SU1026837A1 - Percussion-type power sprayer - Google Patents

Abstract

A MECHANICAL SPRAYER containing a disk mounted on the drive shaft with holes in it and a conoidal protrusion in the center, located above the holes of the blade for air injection and placed under the disk opposite the conoid protrusion, characterized by the fact that torch and increase the dispersion and uniformity of the splash, on the surface of the disk facing the nozzle, starting from the base of the conoidal protrusion, spiral grooves are made, and the holes are made in places position grooves.

Description

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 The invention relates to a technique for the spraying of liquids and can be used to disperse water, technical liquids, suspension emulsions, liquid fuels.

Known shock-mechanical dispenser containing the disk and facing the center of the nozzle l.

In a known sprayer, the disk is driven, and when a liquid jet is applied to it, the liquid spreads across the disk under the action of the centrifugal force and is directed to the periphery, and a torch is formed in the form of a hollow cone with a non-uniform spray pattern.

Closest to the proposed technical principle and the effect achieved is a shock-mechanical dispenser containing a disk mounted on a drive shaft with a hole in it and a conoidal protrusion in the center, located above the blades for air injection and a nozzle placed opposite the conoid protrusion. Nebulization is carried out both for the energy of the jet striking the working element and for: the energy of rotation, which improves the dispersion characteristics. The air trapped by the blades passes through the apertures and deflects a part of the LIQUID downward, contributing to the formation of a filled I torch. ;

However, the air injected through the holes, especially near the center of the disk, almost does not deflect the liquid downward from the radial direction, since its pressure due to low linear velocities of the inner edges of the blades is small, and the pressure of the liquid here is great. The dispersion dispersion is insufficient at a certain cost of energy, i.e. low efficiency of this device as a sprayer.

The purpose of the invention is to increase the uniformity of filling the torch and increase the dispersion and uniformity of the spray.

The goal is achieved by the fact that in a shock-mechanical sprayer there is a disk mounted on a drive shaft with openings in it and a conoidal protrusion in the center, located above the openings of the blade for air injection and placed under the disc opposite the conoidal protrusion on the disk surface, facing to the nozzle, starting from the base of the conical protrusion, spiral grooves are made, and holes are made in the places of the grooves.

FIG. 1 shows the section BB in FIG. 2. in FIG. 2 is a view A of FIG. one.

The device comprises a nozzle 1, a disk 2 seated on a shaft 3. The disk has a conoid protrusion 4 of a blade 5 for injecting air from above, which. inclined forward in the direction of rotation of the disk and located above the air holes 6, spiral grooves were made on the surface of the disk facing the nozzle, starting from the base of the protrusion. ) 0 Sprayer works as follows.

The fluid discharged through the nozzle 1, at a speed approximately equal to the linear circumferential velocity at the periphery of the disk 2, rotating forcibly, hits the conoid protrusion 4 and spreads over the disk. At the same time, those layers in the liquid film, which are adjacent to the disk surface, having first braked on the conical protrusion 4, then receive kinetic energy from the disk itself, are partially blown off from the disk by air pumped through the holes 6 by blasters 5, are partially deflected

from horizontal movement across the disk surface, hitting the grooves 7, which are located almost perpendicular to the direction of movement of the main mass of the liquid. Reject-

Due to horizontal movement, the layers are mixed with the outer farthest from the working surface of the disk and are also partially dug out of the liquid film. All this

5 occurs with particles of a low-mass liquid, which, when detached, form small droplets. Large particles, as the most inertial ones, move along the disk to its periphery; in this case, there is intense turbulence in the liquid film, a uniform distribution of particle velocities over the thickness of the film due to the effect of the grooves and blown air. All this causes a more uniform filling of the torch (its central part), increasing dispersion, and uniformity of spraying.

The effect is enhanced if the direction of rotation of the disk and the direction in which the radius of curvature of the spiral grooves increases, coincide. In this case, the grooves tend to return fluid to the center of the disk, and

5, the fluid moves toward the periphery of the disk due to centrifugal force. Such counterflows cause an increase in the turbulence of the film flow, and consequently, an increase in

R. dispersion spray.

Thus, the entire surface of the disk is turbulized and the film is crushed, small droplets are opened from it and directed by a stream of air pumped through

the holes in the disk, down, due to which the degree of use of the energy supplied to this sprayer increases, the uniformity increases - and the dispersion of the spray in comparison with the known devices.

The proposed device can spray both pure liquids, and suspensions and polluted liquids, it does not contain elements that are prone to clogging. The use of this sprayer ensures uniform symmetrical irrigation of significant surfaces with a single sprayer, which, in turn, leads to an increase in the efficiency of mass transfer processes, and to simplify the irrigation system.

Claims (1)

SHOCK-MECHANICAL SPRAY, containing a disk mounted on the drive shaft with holes in it and a conoidal protrusion in the center, located above the holes of the air blades and placed under the disk opposite the conoidal protrusion nozzle, characterized in that, in order to increase the uniformity of the filling of the torch and increasing dispersion and uniformity of the spray, spiral grooves are made on the surface of the disk facing the nozzle, starting from the base of the conoidal protrusion, and the holes are made in places grooves. KO 05 00 WITH