The spray liquid
(57) Abstract:The invention relates to sprayers and liquid can be used in food, medical, chemical and other industries during drying, extraction and other processes that use the atomization of liquids. The inventive streaming channel 8 is in communication with the annular cavity 3 of the acoustic resonator. The nozzle 4 is made of the radial-circular and located in the plane of the entrance to the annular cavity 3 on its inner edge. The sprayer is supplied mounted on the body 1 to the outer edge of the annular cavity 3 coaxially to the nozzle 4 by a cylindrical nozzle 6. Cylindrical nozzle 6 is mounted for movement along the axis of the nozzle 4. The nozzle 4 is installed in the housing 1 can be moved along its longitudinal axis. Perform a nozzle radial-ring and install it in the plane of the entrance to the cavity resonator on the inner edge provides a stable generation of high frequency acoustic waves. 3 C.p. f-crystals, 1 Il. The invention relates to sprayers and liquid can be used in food, medical, chemical and other industries during drying, extraction, and so is elitel fluid, containing an axisymmetric body with a streaming channel and there is an annular nozzle mounted on the housing and connected with there is an acoustic resonator in the form of an annular cavity made in the housing opposite the outlet nozzle coaxially with him, with streaming channel placed outside of there (Squires, D. of Galustov Century C. the Spray liquid. M. Chemistry, 1979, S. 169, Fig. V. 8, a).This solution is the closest analogue to the proposed technical solution.Atomization of the liquid in the above device occurs when exposed to a liquid jet of supersonic gas flow. The generation of sound waves in the flow cavity resonator supersonic flow in the system of an annular nozzle resonant cavity leads to an increase in the frequency of surface waves, contributing to finer atomization of the liquid. However, these sprays liquids have several disadvantages as spray and operational characteristics. The main disadvantages of the known atomizer are polydispersity spray and a relatively large droplet size. The polydispersity of spray associated with heterogeneous flow structure in statistical power emitter, and from the time of their stay in the zone of maximum intensity of the acoustic waves.The technical result of the invention is to improve the quality of the spray and improving performance. This is achieved by the fact that in the spray liquid, comprising a housing with its axis there is mounted on the housing at the exit from there and communicated with him nozzle, made in the housing cover there is a ring cavity acoustic resonator and streaming channel, according to the invention, the streaming channel is in communication with the annular cavity acoustic resonator, and a nozzle made of the radial-circular and located in the plane of the entrance to the annular cavity on its inner edge.In addition, the sprayer is supplied mounted on the housing at the outer edge of the annular cavity coaxial to the cylindrical nozzle with nozzle. When this cylindrical nozzles is mounted for movement along the axis of the nozzle.The nozzle can be mounted on the housing for movement along its longitudinal axis.Perform a nozzle radial-ring and install it in the plane of the entrance to the cavity resonator at its inner edge at the through connection of the streaming channel with a cavity resonator raspylyaemye liquid is subjected to high-frequency acoustic oscillations, leading to the disintegration of liquid jets, and turning it into tiny droplets that are mixed with cavity air. A high-turbulence for two-phase medium in the cavity promotes uniform mixing of the particles with air. All liquid droplets are almost identical to the effect of acoustic oscillations, which provides a high degree of monodispersity of the spray. As the speed of ejection of the droplets of the cavity is much smaller than the velocity of flow in the external gas stream, the exposure time of acoustic oscillations on drops significantly increases, which reduces their size. The presence of a liquid phase in the cavity resonator prevents heat.Installation on the outer edge of the cavity coaxially with the cylindrical nozzle nozzle provides the opportunity for each position its outer edges relative to the radial-ring to get different angles of spray.Installing cylindrical nozzle on the housing for movement along the longitudinal axis of symmetry of the nozzle allows for small displacements of its outer edges relative to the radial-circular nozzle to obtain the desired spray pattern. When you change the provisions in the interim, through the form of a hollow cone, with virtually no change in the acoustic parameters of the resonators and stored characteristics of the fluid spray dispersity.Install the nozzle on the housing for movement along its longitudinal axis also allows you to adjust the shape of the spray liquid. The simultaneous movement of the cylindrical nozzle and nozzle changes the height of the cavity resonator, and accordingly change the fundamental frequency of the acoustic vibrations, that allows you to control the quality of dispersion of dispersion at fixed costs of air and fluid.The essence of the proposed technical solution is illustrated in the drawing, which shows a cross-section of the nozzle.The spray liquid consists of an axisymmetric body 1, along the axis of symmetry of which is made there is a 2. In the front end of the casing 1 has an annular cavity 3 of the acoustic resonator. Radial-annular nozzle 4 is formed axisymmetric mushroom-shaped Central body 5 mounted in a cylindrical sleeve 6 coaxially with it. The sleeve 6 is installed in there 2 can move along the axis of symmetry of the housing 1, for example, carving, while the nozzle centralnego body 5 holes 7. Streaming channel 8 is installed on the housing 1 from the rear and through the annular manifold 9 and holes 10 are connected with the cavity 3. On the housing 1 at the outer edge of the cavity 3 coaxially with the nozzle 4 has a cylindrical nozzles 11. Nozzle 11 is mounted for movement along the axis of symmetry of the housing 1, for example, on the thread. Cavity ring-shaped collector 9 with the outer side of the housing 1 is closed by the sleeve 12.Tuning to preset mode in the form of spray and dispersion by setting the preset position of the cylindrical nozzle 11 and the nozzle 4 in the plane of the entrance to the cavity resonator 3 in accordance with defined experimentally the characteristics of the spray.The device operates as follows.When the air supply is in there 2 air through the holes 7 in the body 5 is supplied to the nozzle 4, which expires in the form of a radial fan jet. When interacting fan jet with a cavity 3 in it generated intense eddy currents and high-frequency acoustic vibrations. Stable generation of high-frequency acoustic oscillations begins at subsonic mode, the gas flow from the nozzle (the total pressure of 0.05 MPa and above). The frequency acoustic koolanoo nozzle with respect to the outer edge of the cavity 3, due to the nature of the interaction flowing from the nozzle fan jet with the cavity 3. Adjusting the frequency of the acoustic oscillations in the cavity 3 by means of moving (on the thread) cylindrical nozzle 11 and the sleeve 6 together with the nozzle 4. When the flow of liquid streaming channel 8, the liquid fills the annular manifold 9 and a through hole 10 is fed into the cavity 3. Under the influence of high-frequency acoustic oscillations stream of fluid in the cavity 3 is divided into separate drops. A high-turbulence eddy current in the cavity 3 promotes uniform mixing of the particles with air. A sufficiently long residence time of the droplets in the cavity 3 under the influence of high-frequency acoustic oscillations reduces their size. All liquid droplets are almost identical to the effect of acoustic oscillations, which provides a high degree of monodispersity. Getting in the zone bypass flow of air drops addicted fan jet and sprayed into outer space. Adjusts the shape of the torch (the spray angle of the liquid) is carried out by moving (on the thread) cylindrical nozzle 11 or sleeve 6 with the nozzle 4.Made a working model of respirations monodisperse spray various liquid substances: the content of the dispersed phase of about the same diameter was 90 to 95% of the total mass of the liquid. When the ratio of air flow rate to the flow rate of the order of 10, the average diameter of the droplets was 1 to 2 μm, indicating a more efficient spray pattern in the proposed spray liquid in comparison with the known devices, in which when the relevant expenses, the average diameter of the droplets is 10 to 20 μm.The use of the spray on the plant spray drying resulted in a significant reduction of specific energy consumption and get almost monodisperse powder is homogeneous. 1. The spray liquid, comprising a housing with its axis there is mounted on the housing at the exit from there and communicated with him nozzle, is made in the case, covering there is a ring cavity acoustic resonator and streaming channel, wherein the streaming channel is in communication with the annular cavity acoustic resonator, and a nozzle made of the radial-circular and located in the plane of the entrance to the annular cavity on its inner edge.2. Spray under item 1, characterized in that it is supplied mounted on the housing at the outer edge of the annular cavity coaxial to the cylindrical nozzle with nozzle.4. Spray under item 1, characterized in that the nozzle is installed on the housing for movement along its longitudinal axis.
FIELD: agricultural engineering.
SUBSTANCE: invention relates to devices for atomizing liquids of different viscosity and it can be used for producing highly dispersed aerosols for chemical protection of plants, in fog generators for sheltered grounds and decontamination of live stock barns and animals. Proposed pneumoacoustic liquid atomizer has nozzle housing, rod-type radiator arranged coaxially in nozzle housing in closed-type bearings and fixed from axial displacement by lock ring. Unit to deliver compressed air is installed on bushing enclosing nozzle housing and fixed by locknut. Such connection forms ring-shaped air channel communicating with compressed air supply system through union and holes uniformly distributed in nozzle housing. Concentric nozzle enclosing, by taper part, nozzle housing with clearance is connected with liquid feed system by union and is pressed to bushing by union nut. Blades are arranged in space of gas jet radiator formed by inner space of nozzle housing at its outlet and rod radiator, blades being secured on rod radiator. Acoustic vibration resonator is secured on end of rod radiator projecting beyond nozzle housing cut. Flexible element mounted in resonator space is protected by wear resistant deflecting washer with cross cuts which is installed in resonator with clearance.
EFFECT: provision of reliability and faultlessness in operation and formation of perfectly aimed jet, thus increasing utilization factor.
FIELD: agriculture; devices for an atomization of a liquid.
SUBSTANCE: the invention is pertaining to the field of agriculture, in particular, to devices for an atomization of a liquid and may be used in the spraying equipment used for chemical protection of plants, in fog generators for a sheltered ground, at decontaminating treatment of livestock barns and animals. The pneumoacoustic atomizer of a liquid has a body of a nozzle, a rod-type emitter coaxially located in the body of the nozzle in the shut-type bearings and fixed to prevent its axial movement by a retaining ring. On the bush there is a compressed air feeding union enveloping the body of the nozzle and fixed by a retaining nut. Such a junction forms an air duct of the ring-type form, which through the union and uniformly distributed holes in the body of the nozzle is connected to a compressed air supply system. A concentric nozzle with its the conical part enveloping the body of the nozzle with a backlash, is connected to a liquid supply system by the union and braced to the bush by a sleeve nut. On the end of the rod-type emitter protruding beyond the shear of the nozzle body there is a fixed resonator of the acoustic vibrations. In the resonator cavity there is an elastic component protected by a high-wear-resistant reflective washer mounted with a backlash in the resonator. The offered design of the pneumoacoustic atomizer ensures uninterrupted operation, and also retention of a strictly directional and whirling a finely dispersed cloud of an aerosol increasing the aerosol capability to penetrate deep into a volumetric crown, ensures the address hit of drips on the elements of plants and reduced losses of an aerosol liquid particles to a minimum with a more uniform distribution of the drips on the treated object and so increasing efficiency of the liquid atomization.
EFFECT: the invention ensures increased efficiency of the liquid atomization.
3 cl, 2 dwg
SUBSTANCE: acoustic burner for spraying liquids consists of a case with a generator of acoustic oscillations inside the case, made in form of concentric ring apertures, located in a plane perpendicular to the axis of the case. The burner also consists of a ring with a conical surface, joined to the case, and forming a jet of the sprayed liquid, a sprayer, forming a liquid film covering the output from the generator, and fixed to the case through a hollow rod with screw swirl nozzle at the end and a pad for placing circular platform, on which liquid flows from the sprayer. A resonator is made in form of at least, one spherical cavity in the wall of the ring. The spherical cavity is joined to a calibrated opening with a ring aperture, formed by ends of the planes of the case and a ring on the side of the conical surface. The ring is located with provision for fixing movement along the axis of the case through threaded connection.
EFFECT: increased efficiency of spraying.