Spraying or atomising in general and applying liquids or other fluent materials to surfaces, in general (B05)

B05            Spraying or atomising in general; applying liquids or other fluent materials to surfaces, in general(9749)

Jet-centrifugal method to obtain flows of coarse-grained suspensions // 2642790
FIELD: construction.SUBSTANCE: jet-centrifugal device to obtain flows of coarse-grained suspensions comprises a vessel with a liquid, a tap supplying the liquid into a channel with a filter and a gland associated with a rotating channel and a branch pipe. At the outlet end of the branch pipe, a calibrated opening is made, located at a distance from the rotation axis to form a jet formed by the calibrated opening. The filter is mounted in the vessel bottom in the form of a mesh with cell sizes smaller than the calibrated opening diameter. A flow breaker is applied in the device, made in the form of a valve mounted after the gland on the end of the rotated channel opening to a chamber, from which two similar contrary-divergent channels pass, connected at right angle to the horizontal outlet channels connected via flexible hoses with branch pipes while changing their inclination angle relative to the channel rotation axis. Controlling the valve manufactured in the form of an elastic cylindrical rod rigidly built into a cylindrical mandrel guided by a bushing axial with respect to the channel, sliding in thrust grooves, is carried out by a thrust by specifying certain values of the reciprocating stroke of the mandrel with openings made in it for the outlet of the branch pipes. The inclination angle between the branch pipes is set by means of a ligament ensuring the equality of distances from their openings to the channel rotation axis.EFFECT: eliminating losses of the material used during pause periods of its use and applicability expansion of the device for supplying coarse-grained suspensions.3 dwg
Acoustic nozzle // 2642649
FIELD: devices for spraying of liquids.SUBSTANCE: invention relates to fluids and solutions spraying devices. Acoustic nozzle are made in form of acoustic sprayers and contain case with located inside generator of acoustic fluctuations in form of nozzle and resonator, pipes for air and liquid, the acoustic oscillation generator is made in the form of a conical nozzle coaxial with the body and having an annular throttle opening with an outside diameter dc, formed by a cut of the nozzle and a resonator rod of diameter dart. and an annular volume resonator of length h, formed by a resonator rod and a cylindrical hollow with an external diameter dp in the fastening element, wherein the space cavity cavity is spaced apart from the nozzle cutoff at a distance b, and the air supply port is perpendicular to the axis of the housing and is connected to the annular hollow, formed by the roller and the inner surface of the housing, while the roller is secured with a cage with throttling holes coaxial with the ring throttle opening, and a resonator rod is coaxially fixed, and the sprayed liquid is supplied through a branch pipe perpendicular to the axis of the housing into an annular hollow formed by the casing and the outer surface of the nozzle, one end of the casing being made solid and connected to the casing, and at the other end, which surrounds the conical nozzle, are throttled openings coaxial with the ring throttle opening, while on the side opposite to the resonator there is an adjusting device in the form of a handwheel with an oil seal that is mounted on the free end of the roller, and the ratio of the length h of the annular hollow resonator to the distance b from the open surface of the hollow of the resonator up to the nozzle cut lies in the optimal range of values h/b = 0.7÷1.3; outer diameter ratio dp annular cavity resonator to diameter dst the external cylindrical surface of the resonator rod lies in the optimal range of values: dp/dst = 1.2÷1.9; ratio of diameter dc of the circular throttle orifice of the nozzle to diameter dst of the external cylinder surface of the resonator rod is within optimal range of values: dc/dst = 1.1÷1.7, an external diffuser is coaxially attached to the nozzle casing and an internal perforated diffuser is coaxially attached to the fastening element of the annular cavity resonator with the resonator bar so that the output sections of the external and internal diffusers lie in one plane perpendicular to the axis of the annular volume resonator.EFFECT: technical result is increased efficiency of radiotherapy.1 cl, 1 dwg

Foaming generator with a mesh cutter // 2642647
FIELD: fire safety; fire engineering.SUBSTANCE: invention relates to fire-fighting equipment and is designed for use in automatic systems of fire-fighting by generation of a high-expansion polydisperse foam under conditions of room smoke screening by blockage of quick-burning products with a high-expansion polydisperse foam. Foaming generator with a mesh cutter comprises a sprayer which consists of a throttling washer with an annular flange facing towards a fitting with a flange perpendicular to the axis of the throttling washer and the axis of a hole made in the fitting. In the throttling washer there is one central through hole and at least two concentrically circumferentially arranged rows of through holes, and there are nozzles in concentrically circumferentially arranged rows of through hole of the throttling washer. Passage sections of the through holes and corresponding channels for the supply of liquid in the nozzles are the same.EFFECT: technical result is higher efficiency of spraying a fire-fighting liquid solution of a foaming agent (a high-expansion polydisperse foam).1 cl, 2 dwg
Spray system for aerosol and non-aerosol products // 2642618
FIELD: technological processes.SUBSTANCE: system for air fresheners contained in aerosol containers and non-aerosol containers, each comprising a spray nozzle, includes a spray device and an adapter designed to be detachably attached to the relief surface of the spray device. The spray device comprises: an inner portion formed by a front cover, a back cover and a base; an actuator; a controller designed to drive the actuator; a selector switch configured to be positioned in the aerosol spray position and to the product spray position other than the aerosol; a relief surface designed to receive the aerosol container in the inner part of the spray device so that the actuator can contact with the nozzle for the sprayed aerosol. The adapter is designed to receive a non-aerosol container in the inner part of the spray device, so that the actuator can contact with the nozzle to spray the product different other than the aerosol.EFFECT: expansion of the functionality of the deodorization system by using a single system for both aerosol and non-aerosol containers without the need to remove or replace any spray elements.9 cl, 16 dwg
Foam generator // 2642582
FIELD: fire safety; fire engineering.SUBSTANCE: invention relates to the field of fire-fighting equipment and is designed for use in automatic systems of fire-fighting by generation of a high-expansion polydisperse foam under conditions of room smoke screening by blockage of quick-burning products with a high-expansion polydisperse foam. In the foam generator, each of the spray nozzles consists of a cylindrical hollow body with a fluid supply channel, threaded portion and garter belt section. In the lower part of the cylindrical hollow body with a channel for supplying liquid, a hollow conical swirler is fixed. Conical shell of the swirler is fixed by means of at least three spokes fixed at one end to the conical shell of the swirler in its upper part and the other end to the annular groove formed on the inner surface of the fluid supply channel. On the surface of the hollow cone swirler a screw thread is made.EFFECT: technical effect: higher efficiency of spraying a fire-fighting liquid solution of a foaming agent (a high-expansion polydisperse foam).1 cl, 2 dwg
Foam generator of ejection type // 2642581
FIELD: fire safety; fire engineering.SUBSTANCE: invention relates to fire-fighting equipment and is designed for use in automatic systems of fire-fighting by generation of a high-expansion polydisperse foam under conditions of room smoke screening by blockage of quick-burning products with a high-expansion polydisperse foam. In an ejection type foam generator, each of the nozzles comprises a cylindrical hollow body with a fluid supply channel, threaded portion, and garter belt section. In the lower part of the cylindrical hollow body with a channel for supplying liquid, a hollow conical swirler is fixed. Conical shell of the swirler is fixed by means of at least three spokes fixed at one end to the conical shell of the swirler in its upper part and the other end to the annular groove formed on the inner surface of the fluid supply channel. On the surface of the hollow cone swirler a screw thread is made.EFFECT: technical effect: higher efficiency of spraying a fire-fighting liquid solution of a foaming agent (a high-expansion polydisperse foam).1 cl, 2 dwg

Nozzle for spraying liquid // 2642579
FIELD: devices for spraying of liquids.SUBSTANCE: invention relates to spraying of liquids. In the spray nozzle, a perforated disk is installed on the top of it, on which a hollow helical conical swirl is carried, installed in an expanding channel for supplying liquid to a cylindrical hole, which is axially symmetric to the nozzle body. On the surface of the hollow helical conical swirler a screw thread is cut.EFFECT: technical effect of the invention: to improve the quality of spraying, efficiency of nozzle, and reduced hydraulic losses.1 cl, 1 dwg
Centrifugal wide-flare sprayer // 2642578
FIELD: devices for spraying of liquids.SUBSTANCE: invention relates to fluids and solutions spraying devices. In a wide-flare centrifugal nozzle, a hollow conical swirler arranged in the form of a truncated cone is located coaxially in the vortex chamber. Lower base of the cone is carried by the base of the cylindrical vortex chamber. Upper base of the cone is carried by the central cylindrical hole of the nozzle insert. On the surface of the hollow cone swirler a screw thread is cut.EFFECT: technical result of invention is higher efficiency of spraying.1 cl, 2 dwg

Acoustic spray for spraying solutions // 2642576
FIELD: devices for spraying of liquids.SUBSTANCE: invention relates to devices for spraying of liquids, solutions. Acoustic burner for spraying liquids, comprising a housing with jets for supplying a spraying liquid and a spraying agent, inside of which an acoustic generator is arranged in the form of a nozzle and a resonator, made in the form of a sound generator formed by a Helmholtz resonator made in the form of at least one spherical cavity located in the wall of a ring with a conical surface, which is connected to the housing via gage blocks, the spherical cavity of the sound generator is connected by a calibrated hole with an annular gap formed by the end planes of the housing, and a ring with a lateral conical surface formed on a hollow rod which is axially symmetric to the housing and serves to form the generated flame of the sprayed liquid, flowing through the channel of hollow rod to worm atomizer rigidly fixed to the end of the hollow rod and serving to form a liquid film overlapping the output from the sound generator, formed by a Helmholtz resonator, and a ring with a lateral conical surface formed on the hollow rod is arranged to be fixedly moved along the axis of the housing by means of a threaded connection, connecting the body to the ring via gage blocks, the Helmholtz resonator is made to control the generated frequency of the acoustic vibrations by adjusting the width of the annular gap, formed by the end planes of the housing and the ring, by installing between the body and the ring with a conical surface of gage blocks, the thickness of which corresponds to a specified frequency of acoustic vibrations, in the lower part of the housing of the worm atomizer, an additional disc atomizer consisting of a thread bush with a central hole connected to the plane of the rod by means of a calibrated hole is fixed, a top disc rigidly connected to a thread bush with a central hole and a lower solid disk connected to the upper disc by means of at least three fasts to form restrict split between the discs.EFFECT: technical result is increased efficiency of spraying of liquids.1 cl, 1 dwg
Acoustic spray for spraying suspended mixtures // 2642574
FIELD: devices for spraying of liquids.SUBSTANCE: invention relates to sprayers of fluids, solutions and can be used in engine building, chemical, food and light industry. In the acoustic nozzle, an external diffuser of the spray is coaxially attached to the lower part of the nozzle body to spray the suspended mixture. An internal perforated diffuser is attached to the end conical surface of the socket in such a way that the output sections of the external and internal diffusers lie in the same plane perpendicular to the axis of the gas jet radiator. An additional flow divider coaxially attached to the external diffuser is made in the form of a cylindrical shell, at the end part of which a perforated plate is fixed on the side opposite the diffuser.EFFECT: technical result of invention is higher efficiency of spraying.1 cl, 1 dwg
Device for coating material particles // 2642565
FIELD: machine engineering.SUBSTANCE: device for coating material particles comprises of: a housing with heat carrier inlet and outlet branch pipes, along the axis of which there is a material particle atomizer, coating liquid feeder, a chamber, which is in alignment with the atomizer, having liquid inlet branch pipes and an outlet annular opening in the lower portion, and a coating liquid tank. The device is provided with a coating liquid inlet chamber made in the form of two coaxial cylinders, which are in alignment with the material particle feeder. There is a truncated cone rigidly fixed in the lower portion of the internal cylinder. And there is a cylindrical shell, made of elastic material, in the lower portion of the external cylinder. The lower end of the shell freely adjoins the larger base of the truncated cone of the internal cylinder.EFFECT: ensuring the continuity of the film and the possibility of adjusting its thickness.1 dwg

ethod for obtaining nanocarbon // 2641829
FIELD: nanotechnology.SUBSTANCE: method comprises supplying into the reaction chamber made in the form of a trunk, which is periodically closed at one end and opened at the other end, on the side of the closed end through a system of fast-acting valves and a mixer tap in the flowing mode of clean acetylene or with addition of oxygen, and then easily detonating acetylene-oxygen mixture, initiating detonation at the closed end of the chamber and after passing a detonation wave forming nanocarbon as a result of the detonative decomposition of the acetylene, wherein at the end of the cycle of nanocarbon production blowing the trunk with a gaseous hydrocarbon with a general formula CnH2n+2 or CnH2n, implementing frequency repetition of cycles in an automatic mode, and the obtained nanocarbon is collected in the manifold.EFFECT: obtaining nanocarbon of the required degree of purity by a high-productive method with increased efficiency of raw material use and explosion safety.2 dwg, 1 tbl, 1 ex

Indicator of ac generator for electrostatic spray gun // 2641823
FIELD: electricity.SUBSTANCE: AC generator contains a stator with an inner diameter and an outer diameter. The AC generator additionally contains a rotor located inside the inner diameter of the stator and adapted to rotate inside the stator to generate alternating electric current using the AC generator. The electrode, adjacent to the spray tip assembly, is connected to generate electric power from the AC generator. At least one controller is connected to the AC generator and is configured to provide a representation of the rotor speed.EFFECT: invention allows to adjust the rotor speed.19 cl, 6 dwg

Freezing point-reducing coating from synthetic film for application of wind-generators on rotor blades // 2641790
FIELD: chemistry.SUBSTANCE: application of coating containing from 15 to 75 at % of fluoride, a particular method of the X-ray photoelectron spectroscopy, and from 25 to 85 at % of oxygen, hydrogen and/or carbon defined by the X-ray photoelectron spectroscopy, or coating containing silicon, oxygen, and carbon, causing at least one surface of the rotor blades for lowering the freezing point. The coating is structured in the form of a dot or line image.EFFECT: long and constant protection against icing.5 cl, 9 dwg, 1 tbl

Device for gas-thermal detonation spraying of coating layer with pulse dosing of powder feed // 2641767
FIELD: machine engineering.SUBSTANCE: device for gas-thermal detonation spraying of coating layer with a pulse dosing powder feed contains a body 1, which has a capacity for powder 2 with the powder 3, a distributing disc 4 mounted on the axis 7 with dosing feed cylindrical cavities 5 formed on the peripheral part of the disc 4, a valve 10 with a rod 11, which is connected to a shut-off device 12, a channel 13, connected with a trunk 14, a control unit 15. The disc 4 in the area of the dosing feed cylindrical cavities 5 on each side is provided with a concentric protrusion. The edges of the protrusion are arranged symmetrically with respect to the dosing feed cylindrical cavities 5. The disc 4 is provided with bypass holes 6 arranged around the circumference inside the concentric protrusion of the disc 4. In the body, a curvilinear channel 8 is provided below the disc, the inlet hole of which is located opposite the bypass holes 6, and the outlet hole is located on the same axis with the dosing feed cylindrical cavity 5 and the channel 9, connected with channel 13.EFFECT: providing the possibility to simplify the dosage and increase its accuracy, compactly distribute the powder in the head of the gas detonating object and reduce its unproductive expenditure, improve the quality of the applied coating, and increase the reliability of the device.4 dwg

Feeding chute with expansive body for supplying precipitating electrode of wet separating device of overspray // 2641745
FIELD: machine engineering.SUBSTANCE: separation unit includes a plate-shaped collecting electrode on which the precipitating plane for over-spraying is made and a feeding device by which a precipitating liquid is supplied to the precipitating plane of the precipitating electrode and which includes a chute configured to be filled with the precipitating liquid and a sampling device by which the precipitating liquid is taken from the chute. In this case, the sampling device includes a variable in shape, flexible and/or elastic expansive body disposed in the chute, partially limiting the closed cavity, and a pumping device by means of which a pressure transmitting medium can be pumped into the closed cavity.EFFECT: effective overspray of particles in the separating device in which the precipitating liquid can be taken from the chute with an accurate, largely independent from the material properties bailing force.12 cl, 9 dwg

Electrostatic spraying device for spraying liquid coating material and device for spraying containing such spraying device // 2641741
FIELD: machine engineering.SUBSTANCE: electrostatic sprayer comprises a rotating bowl and drive means for rotating the bowl about the axis of rotation. The bowl has a concave surface for distributing the covering material and an edge defining the area of covering material spraying. The spraying device is provided with at least one first ionizing charging electrode for droplets of the coating material located with respect to the edge and along the axis of rotation, opposite the spraying zone, and passing between the edge of the bowl and the bowl drive means. In addition, the sprayer is provided with at least one second electrode for creating electrostatic field, which provides transfer of droplets to an object to be coated and mounted on the fixed body of the sprayer. The sprayer also comprises a third electrode which is installed on a stationary body and having in the course of operation an intermediate electric potential between the potentials of the first and second electrodes. The device for spraying the liquid covering material contains at least one sprayer.EFFECT: increased efficiency of electrostatic charging of coating material droplets, which makes it possible to use the electrostatic effect for directing said droplets to the object to be coated.15 cl, 5 dwg
ethod for electroplasma spattering of biocompatible coatings based on magnesium-containing tricalcium phosphate // 2641597
FIELD: medicine.SUBSTANCE: method includes implant surface preparation by air-powder abrasive treatment and ultrasonic degreasing, then electrolytic-plasma spattering of a titanium sublayer and biocompatible layer is performed, ultrasonic degreasing is carried out in an aqueous solution of surfactants at temperatures of up to 40°C for 5-7 min, electrolytic-plasma spattering of the titanium sublayer is done from the spraying distance of 120-150 mm for 12-15 s, at the plasma-forming gas flow rate of 20 l/min, particle size not exceeding 150 mcm and arc current of 350 A, electrolytic-plasma spraying of powder magnesium-containing tricalcium phosphate is done from the spraying distance of 50-60 mm for 10-12 s, at the plasma-forming gas flow rate of 20 l/min, dispersion of no more than 90 µm and arc current of 350 A.EFFECT: invention can be used in maxillofacial surgery and traumatology for production of interstitial endoprostheses on a titanium base.2 tbl, 2 dwg

Fire-extinguishing sprinkler system // 2641476
FIELD: fire safety.SUBSTANCE: in a sprinkler fire extinguishing system consisting of a water supply source, a network of main and distribution pipelines with sprinkler heads, additionally contains a main water feeder with a filter placed in the source connected to the main pipeline and a make-up system installed parallel to the main water feeder line and including a make-up pipeline auxiliary water supply and auxiliary (automatic) water supply, and the control and alarm system includes control Signal valve and signal device, for example, in the form of a sound siren. The main pipeline is connected to a network of distribution pipelines in which sprinkler heads are mounted, each of which consists of a base that is connected to at least two arcuate holders that hold the bushing with a divider attached to it, made in the form of a diffuser with a girdle bent toward the base with the petals located along the generatrix of the conical surface of the girdle, and inside the divider there is additionally installed a sprayer, made in the form of a cup, At least three radially horizontally located flat petals to the inner surface of the dissector. The cup axis coincides with the axes of the through channel of the fitting and the sleeve, its inner cavity is directed towards the sleeve, and the glass bulb is supported by a lower end on the valve through an elastic gasket fixed on the external end surface of the valve, which in turn rests on the base in the form of a nozzle with tapered thread and through channel. The glass bulb rests on the upper end of the holder, mounted in the lower part of the sleeve with the divider attached to it. The holder is installed in the lower part of the bushing with a clearance.EFFECT: increased efficiency of fire extinguishing due to quick-acting elements, added to the common circuit of the automatic fire-extinguishing system.2 cl, 2 dwg

ethod of applying multicomponent coating by electric arc metalization // 2641427
FIELD: technological processes.SUBSTANCE: at least, two metallizers with two wires in each metallizer are used. Metallizers are positioned at an angle α1 in the range of 35 to 45° between their axes and at an angle α2 in the range of 18 to 22° to the normal to the machined surface so that the zone of the electric arc is located at a distance of 130 to 150 mm from the surface to be treated. In the metallization process, the flows of a dispersed mixture of metals converge to a point on the surface to be treated. Wires of Cu and Sn composition are used with a diameter of 1.5-2.5 mm, while choosing wires with a component ratio, which allows to obtain an optimal composition coating as a result of mixing components of all wires.EFFECT: regulating the physico-chemical composition of the applied metal antifriction coating and obtaining a heterogeneous complex composition with improved properties using a common type of the metallizer.3 cl, 1 dwg, 1 ex, 3 tbl

Centrifugal vortex nozzle // 2641281
FIELD: machine engineering.SUBSTANCE: T-shaped throttle washer is rigidly fixed between the body and the nut. At least three throttle orifices are made in end cylindrical part of the washer. An axial throttle orifice with a perforated disc on its cut, which is fixed to axial cylindrical part of T-shaped throttle washer, is arranged in axial cylindrical part rigidly connected to the throttle washer. The hydraulic resistance of the throttle orifices and the axial throttle orifice are selected depending on the properties of sprayed liquid and the required degree of its spraying. Solution is supplied through an orifice in the nut fixed in upper part of the body. The bottom of the body with the central cylindrical axial chamber is closed by a perforated disc attached to the end bottom surface of the body. A hollow conical swirler is located in the cylindrical axial chamber axially symmetrical thereto. A conical shell of the swirler is fixed between perforated disc rigidly connected with the axial throttle orifice of the T-shaped throttle washer and the perforated disc fixed to end lower surface of the body. A through helical thread is made on the outer surface of the hollow conical swirler.EFFECT: increased spraying efficiency, simplified structure and reduced material consumption.2 cl, 1 dwg

Device and method for hydrodynamic cleaning of surfaces based on micro-hydropercussion effect // 2641277
FIELD: machine engineering.SUBSTANCE: head for hydrodynamic cleaning is a flow channel with a profile, a resonance chamber and a diffuser formed coaxially with each other by an input confusor, resonance chamber and diffuser. The confuser and diffuser are connected by the resonance chamber in the form of a transition projection. The ratio of the area of the outlet cross-section of the confuser to the cross-section area of the resonance chamber opening forming the transition projection is 1.5-8.97. The diffuser may contain a device for additional supply of liquid, gas or solid particles. Preferably, the confuser has a conical shape and a cone angle of 10-20°. Preferably, the diffuser has a conical shape and the taper angle of 15-70°.EFFECT: high-performance, stable and sufficient for practical tasks cavitation at possible more low pressures and flow rates for cleaning surfaces from man-made and natural contaminations both in liquid and air environments.11 cl, 3 ex, 2 dwg

Acoustic head for nozzles for spraying liquids with parabolic swirler // 2641275
FIELD: machine engineering.SUBSTANCE: acoustic head for nozzles for spraying liquids comprises a body with branch pipes for supply of a spraying liquid and a spraying agent. Inside the body, there is a generator of acoustic oscillations in the form of a nozzle and a resonator made in the form of an audio generator formed by a resonator of the helmholtz resonator. A hollow rod is inside the body axially symmetrical thereto and serving to form a produced flare of sprayed liquid entering through a hollow rod channel to an auger sprayer. The auger sprayer is rigidly fixed on the end of the hollow rod and serving to form liquid film closing an outlet of the sound generator. A parabolic swirler is fixed in the lower part of the screw sprayer body.EFFECT: improved efficiency of liquid spraying.2 cl, 2 dwg
Generator of polydispersed high-quality foam of vortex type // 2641272
FIELD: fire safety.SUBSTANCE: in the generator of polydisperse high-frequency foam of the vortex type, each of the nozzles comprises a cylindrical hollow body with a channel for supplying liquid, a threaded portion and a girdle with cuts for the key. In the lower part of the cylindrical hollow body with a channel for supplying liquid, a hollow conical vortex is fixed. Conical vortex shell is fixed by at least three spokes of enshrined one end on a conical cowling vortex in the upper part and the other end-ring groove, performed on the inner surface of the inlet channel liquid. The screw thread is cut on the outer surface of the hollow conical vortex.EFFECT: higher efficiency of spraying a fire-quenching liquid solution of a foaming agent.2 dwg
Vortex nozzle // 2641271
FIELD: machine engineering.SUBSTANCE: vortex injector has a body with a swirl chamber and a nozzle, the body is made in the form of a supply union with a central hole, and rigidly fixed thereto and coaxial to cylindrical sleeve with inner thread and expansion chamber coaxial to the body. A nozzle made in the form of an inverted barrel is coaxially connected to the body in its lower part. A fluid flow swirler is made in the barrel bottom and fitted by at least two cylindrical inlets inclined to the nozzle axis and provided in the nozzle end surface. A hollow conical swirler is fixed in the lower part of the nozzle mixing chamber, which conical shell is fixed by means of at least three spokes fixed in its upper part by one end on the swirler conical shell. The other end of the shell is fixed in an annular groove provided on the inner surface of the mixing chamber. The screw thread is cut on the outer surface of the hollow conical swirler.EFFECT: higher efficiency of spraying by means of increases spray cone.1 dwg

ethod of foamed moulded products manufacturing // 2641129
FIELD: technological processes.SUBSTANCE: invention relates to a process for the manufacture of foam moulded articles comprising the steps of: A) providing a mould and B) introducing the foaming reaction mixture into a mould with variable injection pressure, wherein the exit velocity of the foaming reaction mixture introduced in step B) is ≥ 1 m/s - ≤ 5 m/s, and the injection pressure in step B) decreases in time dynamics, and the foaming reaction mixture has an experimentally determined setting time at a temperature of 20°C, which is 20 ≥ s - ≤ 60 s. The invention also relates to a refrigerator, a freezer and a combination of a refrigerator and a freezer compartment that comprise a foamed moulded article, which in particular is a component of the casing.EFFECT: more uniform foam density distribution and no voids.19 cl, 5 dwg, 3 tbl, 9 ex

Device for application of multi-layer coating to optical flat by centrifuging method // 2641123
FIELD: machine engineering.SUBSTANCE: device for application of a coating by centrifuging method comprises a coating device tank, the structure of which is designed so that it collects excess coating material that is dropped from the optical flat onto which it is applied. The device also includes a rotatable holder, the structure of which is designed so that it receives and rotates the optical flat contained in the tank of the coating device. In addition, the device comprises several coating tanks, each comprising a coating (material) composition for selectively coating an optical flat. Also, the device comprises an indexable platform with coating tanks, comprising a plurality of tanks and moving the selected coating tank in stages to a dispensing position above the tank of the coating device. The device for application of the coating by centrifuging method may comprise a tank configured to collect excess coating material discarded from the coated optical flat. Each coating tank comprises a coating material for selectively coating the optical flat. Each coating tank comprises an elongated barrel and a movable piston for discharging the coating material from the coating tank, and each tank with the coating composition discharges the coating material through a valveless outlet located at the outer end of the barrel. The indexed platform on which the coating tanks are located is arranged to move the selected coating tank to a dispensing position that is located above the tank of the coating device. The platform with the coating tanks further comprises a dispenser that is located in the dispensing position. The spraying device is adapted to engage in a dispensing position with a movable piston of a selected coating tank to release a predetermined amount of coating material from the selected coating tank. In addition, the device may comprise at least one curing unit. Each curing unit is independently configured to selectively and at least partially cure at least one coating material applied to the optical substrate. Each curing unit independently comprises at least one of the following: a thermal curing unit; UV curing unit; an infrared curing unit and combinations of at least two of the units.EFFECT: ensuring the possibility of using a variety of different coating compositions.34 cl, 6 dwg

Device for electrostatic spraying of coating product and manner of generator for power supply to high voltage block in such device // 2640782
FIELD: electricity.SUBSTANCE: device for electrostatic coating spraying system of the coating product includes a sprayer having a first conduit and a second conduit for flowing the coating product and air. The flow of the coating product and air is controlled by at least one valve. The atomizer also includes means for controlling the opening/closing of the valve and a high-voltage unit, a power supply generator for the high-voltage unit. The generator contains a control module for supplying current to the high-voltage unit. The atomizer includes at least one first sensor capable of detecting the position of the valve gate relative to the socket and outputting a signal that can be used by the control module to control the supply of current to the high voltage node. The atomizer includes a second sensor capable of detecting the position of the switch disposed on the gun and outputting a signal that can be used by the control module to control the supply of power to the high voltage unit. Method of generator control to provide power to the high voltage block placed on the device for electrostatic spray coating product, includes provisions valves valve located in the dispenser, and bringing it into using the movement of opening/closing, on the one hand, and to change the position of the switch attached to the gun, on the other hand. The method also includes directing a signal corresponding to the valve position and the switch position to the generator control module using a connection suitable for the type of sensor used. Then, control is performed to turn off or initiate the generator based on the received signal and using the control module.EFFECT: increase reliability and accuracy of control of the power supply generator to the high-voltage unit without the need to detect the flow of the medium.15 cl, 1 dwg

ethod for curing thermoreactive polymer powder coatings // 2640771
FIELD: technological processes.SUBSTANCE: method involves measuring, recording and monitoring the values ​​of the physical state parameters of the coating in the form of electrical signals proportional to the changes in the intensity of the heat radiation of the coating surface, representing it as a graphical dependence on the temperature in the working volume. At the same time the measurement and recording is done as a graphical dependence on the temperature, the value of the coating surface thickness and the reflection index. The graphical dependences of the above parameters are compared with a chart of the working temperature changes in the chamber. The average values of stabilization time of the specified parameters are defined by mathematical processing via an electronic device. The obtained average values are compared with the value of the temperature stabilization time in the working volume upon the completion of inertial processes and define their sum by the results of the comparison. Mathematical calculations are done by subsequent summation of received values and values of polymerization stabilization time, set graphically, and then compared with the value of the technologically set process end time, and the required estimated time of full coating curing is determined. The difference between the obtained average values of the parameter stabilization time and thermodynamic equilibrium time in the working volume is calculated. Then the differences are summed up with the value of the technologically set polymerization temperature time. The desired point of the final coating curing is determined by the equality or difference of the calculated time value with the preset end time of the coating process.EFFECT: ensuring the determination of the point of the final coating formation after the completion of the inertial processes during heating in the working volume of the chamber, taking into account the influence of the temperature increment on the coating formation processes in the working volume for the time interval during which the temperature increases and then decreases to a technologically set level, that ensures the quality of the resulting coating from thermoreactive polymer powder compositions.6 dwg

esh vertical filter // 2640535
FIELD: machine engineering.SUBSTANCE: mesh vertical filter contains a body mounted on the cover of a steam-dust mixture source, inlet and outlet branch pipes, a filter element in the form of a rotating rotor, which is rotation exponential and made of two stainless meshes, sprayed with nozzles, a sludge pan, filter sprayed zone in the form of coaxial cylindrical shell. Each spray nozzle has a hollow cylindrical housing with throttle washer connected with union nut to which liquid flow divider is secured, and consisting of coaxially arranged perforated conical shells, the space between which is filled with a fine-meshed grid, wherein the vertices of conical surfaces of shells are directed away from the throttle washer. A cylindrical perforated segment fastened on the perforated conical shells is fixed in the lower part of the divider. In the cylindrical perforated segment, there is a flow swirler made in the form of a spring.EFFECT: higher efficiency and reliability of dust separation by increasing the liquid spraying level by the nozzles.2 dwg

esh horizontal filter // 2640534
FIELD: machine engineering.SUBSTANCE: mesh horizontal filter contains a housing, inlet and outlet branch pipes, a spray nozzle and filter elements, which are rotating metal meshes connected to a snail connected by a bypass pipe to an inlet pipe and a hydraulic gate to drain the sludge into a settler. The spray nozzle has a hollow cylindrical housing with throttle washer connected with union nut to which liquid flow divider is secured, and consisting of coaxially arranged perforated conical shells, the space between which is filled with a fine-meshed grid, wherein the vertices of conical surfaces of shells are directed away from the throttle washer. A cylindrical perforated segment fastened on the perforated conical shells is fixed in the lower part of the divider. In the cylindrical perforated segment, there is a flow swirler made in the form of a spring.EFFECT: higher efficiency and reliability of dust separation by increasing the liquid spraying level by the nozzles.2 dwg

Acoustic nozzle with double liquid inlet // 2640528
FIELD: machine engineering.SUBSTANCE: acoustic nozzle with double liquid inlet comprises a resonator in the form of a toroidal cavity, the axis of which is arranged coaxially to the body. The cavity is connected by at least one calibrated opening with a circular slot formed by end planes of a cup and rod on the side of the collar conical surface. In the body of the central rod with the head coaxially arranged in the sleeve coaxial with the body, there is a tube for central injection of liquid with at least three branches located perpendicularly to the conical surface of the head of the central rod. An outer diffuser is coaxially fixed to the lower part of the nozzle body. An inner perforated diffuser is attached to the center of the end surface of the central rod head so that the outlet sections of the outer and inner diffusers lie in the same plane perpendicular to the axis of the resonator.EFFECT: increased spraying efficiency.2 cl, 1 dwg

Injector with double conical swirler // 2640526
FIELD: machine engineering.SUBSTANCE: injector comprises a cylindrical hollow body with a channel for supplying liquid, in which a sprayer is fixed consisting of three throttling elements. The sprayer is in the form of oppositely located vertices and axially symmetrical hollow conical swirlers: the upper and the lower ones. The lower swirler conical shell is fixed by means of at least three spokes fixed in its upper part by one end on the lower swirler conical shell, and its other end it is fixed in the circular groove of injector channel made on its inner surface. The conical surface vertex of the upper swirler conical shell is fixed on a round perforated plate installed in the circular groove of the injector channel and resting on the lower swirler vertex. There are through helical cuts made on the outer surfaces of hollow conical swirlers. The throttling effect of the sprayer is determined as a by total throughput capacity of constituent elements thereof, wherein the total throughput capacity of the upper swirler and the perforated plate is higher than that of the lower swirler.EFFECT: increased spraying efficiency, simplified structure and reduced material consumption.1 dwg

ethod for producing paintwork coatings during repaire painting working bodies of technological machines // 2640239
FIELD: chemistry.SUBSTANCE: invention relates to a method of obtaining coatings during repair painting with high resistance to abrasion on the surfaces of various materials and can be used on various repair enterprises. The method of obtaining paintwork coatings during repair painting of working bodies of the technological machines includes preparation of the surface, preparation of the material, application of soil, and drying. In the enamel, up to 30% of the total volume of plasticiser is added before application. The first layer of enamel is applied to the entire surface area. Before applying the second layer 20% of diluent from the total volume is added to the enamel. The second layer is applied to the entire surface area. Before applying the third layer, 30% of diluent from the total volume is added to the enamel. The third layer is applied to the area of medium and most worn out areas. Before applying the fourth layer 20% of diluent from the total volume is added to the enamel. The fourth layer is applied to the area of the most worn out areas. Before applying the fifth layer 20% of the diluent from the total volume is added to the enamel. The fifth layer is applied to the entire surface area.EFFECT: possibility of creating long-lasting coatings on surfaces exposed to intense abrasion, reducing the time of formation of coatings and reducing the complexity of the work.4 dwg, 1 tbl
Acrylic composition from two parts containing ability to cure // 2640234
FIELD: chemistry.SUBSTANCE: composition comprises the liquid first part stable at storage and the liquid second part stable at storage which react with each other upon mixing with the formation of cement which hardens. The composition further comprises an acrylic monomer component and an amount of an initiator component for polymerizing the monomer component. The monomer component and the initiator component are typically in the separate parts of the two parts of the composition, so that the monomer component is stable at storage. The liquid first part contains, in a liquid carrier, acrylic polymer particles obtained by emulsion polymerization. A method for the preparation of a curable, two-part acrylic composition is also described. The composition is particularly useful when used in a syringe or a compression seal gun having at least two cylinders. A solid cement composition of bone cement, obtained by curing the acrylic composition consisting of two parts is porous and permits controlled release of antibiotics and medicines into the surrounding bone and tissue.EFFECT: low temperature of the exothermic effect during curing, the adhesion of the composition of bone cement that prevents, in particular, tissue necrosis, and the provision of the porous bone cement provides the cement mechanical properties matching the characteristics of the surrounding bone.28 cl, 16 tbl, 79 ex
Centrifugal nozzle // 2640231
FIELD: machine engineering.SUBSTANCE: centrifugal nozzle contains a body, a fitting attached to the upper part of the body. Inside the fitting a cylindrical hole passing into a diffuser is executed. The diffuser is connected to a cylindrical chamber, made in the lower part of the body, through a sealing gasket. The upper part of the hollow conical swirler is located in the diffuser. The conical shell of the swirler is fixed between the perforated disk separating the cylindrical hole and the diffuser and the perforated disk fixed on the shear of the cylindrical chamber to the body on which the lower part of the hollow conical swirler is resting. The through helical thread is made on the outer surface of the hollow conical swirler.EFFECT: invention makes it possible to increase the efficiency of spraying, simplify the design and reduce the materials consumption.1 dwg
Sprayer with active reducer // 2640230
FIELD: machine engineering.SUBSTANCE: sprayer contains a hollow cylindrical body with a vortex baffle, a hollow cylindrical hull, top of which is made for connection to external thread connection distribution pipeline for supply of fluid. In the lower part of the body, an external thread is made for connection to the vortex flow divider. In the body there is an inner cylindrical chamber which serves to supply liquid, and in the cylindrical chamber, coaxial to it, a swirler is installed with a clearance relative to the inner side surface of the chamber. The vortex flow dissector is fixed to the body by means of a ring having an internal thread and made in the form of a ring to which are attached two diametrically arranged vertical plates joined in the lower part by a horizontally disposed rod in the middle of which there is a second swirler made in the form of a disk with helical blades encompassing with a clearance rod in its middle part, and having at the edges of the stops in the form of disks, located perpendicular to the rod. In the cylindrical chamber, coaxial with it, a hollow conical swirler is installed with a clearance with respect to the inner lateral surface of the chamber, made in the form of a conical surface with a screw through-cut, while the apex of the conical surface of the hollow conical swirler is fixed on the end surface of the rod.EFFECT: invention makes it possible to increase the efficiency of finely dispersed liquid spraying.1 dwg

Injector with counter-directed conical swirlers // 2639775
FIELD: machine engineering.SUBSTANCE: injector with counter-directed conical swirlers has a cylindrical hollow body with a channel for liquid supply in which a sprayer is fixed consisting of three throttling elements. The sprayer is made in the form of oppositely located vertexes and axially symmetrical hollow conical swirlers: upper and lower ones. A conical shell of the lower swirler is fixed by means of at least three spokes fixed by one end on conical shell of the lower swirler in its upper part, and by its other end - in the circular groove of the injector channel made on its inner surface. Vertex of the conical surface of the conical shell of the upper swirler is fixed on a round perforated plate installed in the circular groove of the injector channel and resting on top of the lower swirler fixed in the injector channel by means of spokes. Through helical cuts are made on outer surfaces of the hollow conical swirlers. The throttling effect of the sprayer is determined as a whole by the total throughput capacity of the constituent elements thereof. In order to achieve finely dispersed spraying, the total throughput capacity of the upper swirler and the perforated plate is made higher than the throughput capacity of the lower swirler.EFFECT: invention makes it possible to increase efficiency of spraying, simplify design and reduce material usage.2 cl, 1 dwg
Centrifugal injector // 2639774
FIELD: machine engineering.SUBSTANCE: centrifugal nozzle comprises a body with a central cylindrical axial chamber connected to a nut in which a liquid supply opening is made. A T-shaped throttling washer is rigidly fixed between the body and the nut. At least three throttling orifices are made in end cylindrical part of washer. An axial throttling orifice with perforated disk on its cut is located in the axial cylindrical part of the washer. The bottom of the body with the central cylindrical axial chamber is closed with a perforated disk fixed to the end bottom surface of the body, and a hollow conical swirler is arranged in the cylindrical axial chamber axially symmetrically thereto. A conical shell of the swirler is fixed between perforated disk rigidly connected with the axial throttling orifice of the T-shaped throttling washer and the perforated disk fixed to end lower surface of the body. Through helical thread is made on the outer surface of the hollow conical swirler.EFFECT: invention makes it possible to increase efficiency of spraying, simplify design and reduce material usage.1 dwg

Injector with conical swirler // 2639773
FIELD: machine engineering.SUBSTANCE: injector with a conical swirler comprises a cylindrical hollow body with a channel for liquid supply, a threaded section and a belt with cuts for a key. The hollow conical swirler is fixed in lower part of the cylindrical hollow body with the channel for liquid supply. A conical shell of the swirler is fixed by means of at least three spokes. The spokes are fixed by one end on the conical shell of the swirler in its upper part, and by the other end - in the circular groove, made on the inner surface of the liquid supply channel. Through helical thread is made on the outer surface of the hollow conical swirler.EFFECT: invention makes it possible to increase efficiency of spraying, simplify design and reduce material usage.1 dwg

Automated monodispersed aerosol disc generator // 2639722
FIELD: electricity.SUBSTANCE: automated monodispersed aerosol disc generator designed to create a monodisperse aerosol of a given dispersion, comprises a power supply unit, a generator unit with a disc, an analog-to-digital converter unit, a connecting cable and a personal computer.EFFECT: control the size of obtained particles.6 dwg

Vortex injector // 2639704
FIELD: machine engineering.SUBSTANCE: vortex injector has a body with a swirl chamber and a nozzle, the body is made in form of supply union with a central hole, and a rigidly and coaxial connected cylindrical sleeve with an internal thread and an expansion chamber coaxial to the body. The nozzle is connected to the sleeve by means of thread coaxially to the body in its lower part. The nozzle is made in form of an inverted cup, in the bottom of which there is a turbulent swirler of the liquid flow with at least two inlets inclined to the axis of the nozzle, in the form of cylindrical holes located in the end surface of the nozzle, where there is also a central cylindrical throttling orifice connected to the mixing chamber of the nozzle, connected in series with the diffuser outlet chamber. Diffuser outlet chamber accommodates a splitter made in the form of at least three spokes, each of which is fixed by one end on the outer surface of the diffuser outlet chamber, perpendicular to the generatrix of its surface, and by the other end is fixed on the surface of rotation body, for example, a ball which axis coincides with axis of the diffuser outlet chamber. The rotation body itself is located in the lower part behind the cut of the diffuser outlet chamber, to the end surface of the cylindrical sleeve coaxial with the body, a diffuser is attached coaxially to the diffuser chamber, the cut surface of which lies in a plane below the surface of the rotation body of the splitter. The splitter is made in the form of two spokes, each of which is fixed by its one end on the outer surface of the diffuser outlet chamber, perpendicular to the generatrix of its surface, and on the axle by its other end, on which the rotation body is mounted for rotation, made in the form of a ball which center lies on the axis of the diffuser outlet chamber. The surface of the rotation body is made in form of ball mounted on axle for rotation, the surface is made perforated, to the surface of the rotation body made in the form of a ball mounted on an axle with the possibility of rotation, elements performing its rotation are made in the form of screw blade sections. Screw grooves are made on inner surface of central cylindrical throttle orifice located in end surface of the nozzle for further swirling of the liquid flow.EFFECT: invention makes it possible to increase efficiency of spraying by increasing spray cone.2 cl, 2 dwg

Anticorrosive coating and method of its production // 2639700
FIELD: chemistry.SUBSTANCE: invention relates to the protective coating that is applied as corrosion protection coatings for corrosive bases, particularly corrosive metals, alloys, and other materials, in particular steel, used as a primer coating for causing further multi-layer porous coatings or as a surface layer, as well as to the method in which it is received and the application on the coated base for the corrosion protection, in particular, for the use against microbiologically induced corrosion (MIC). An anticorrosion coating has a thickness of at least 50 μm. The anticorrosion coating includes a high-density protective coating of the base subject to corrosion, containing the pre-condensed precursors of alkoxysilane forming a coating. The molecules of the pre-condensed precursors of alkoxysilane forming a coating are constructed by linear and short-chain ones from the monomer units from the group of precursors of alkoxysilane. Moreover, the molecules of the pre-condensed precursor of alkoxysilane forming a coating are cross-linked. Obtaining anticorrosive coating involves preparing the anticorrosive composition, in which at least one precursor of alkoxysilane forming a coating without a solvent and additives by adding water in a molar ratio of 3:1 to 1:1 under acidic pH conditions, at a temperature in the range of 0°C to 10°C is converted into a pre-condensed precursor of alkoxysilane forming a coating. Further, the anticorrosive composition is applied to the substrate and cured to produce a high-density protective coating.EFFECT: production of high-density anticorrosion coating, suitable for corrosion protection, including for protection against microbiological corrosion of various materials.25 cl, 13 dwg, 14 ex

Acoustical head for atomizers for spraying liquids // 2639699
FIELD: machine engineering.SUBSTANCE: in the acoustic head for atomizers for spraying liquids, an additional disc atomizer is attached to the bottom of the screw atomizer housing. The atomizer consists of a threaded sleeve with a central hole connected to the rod cavity by means of a calibrated hole, an upper disc rigidly connected to the threaded sleeve with a central hole, and a lower solid disc connected to the upper disc by at least three fasteners with the formation of a throttling gap between the discs.EFFECT: improved efficiency of liquid spraying.2 cl, 1 dwg
Coating composition // 2638971
FIELD: chemistry.SUBSTANCE: coating composition comprises a polymeric film-forming resin, a cross-linking agent suitable for cross-linking a polymeric film-forming resin, and an additive comprising a bismuth carboxylic salt, which comprises bismuth neodecanoate.EFFECT: invention allows to obtain coatings resistant to alkali, with improved adhesion, flexibility and abrasion resistance.11 cl, 2 tbl, 3 ex

ethod for manufacturing rotor of electrostatic gyroscope and device for implementation of this method // 2638870
FIELD: machine engineering.SUBSTANCE: process for manufacturing the rotor includes forming a spherical rotor blank, balancing it, and applying a thin-film wear-resistant coating of varying thickness. An outer spherical surface of the coating is formed with a center displaced relative to the geometric center of the rotor blank by the calculated value δ in the direction opposite to the direction of the rotor imbalance vector . For this purpose, during spraying a cyclic reciprocating motion of the rotor is performed along the axis of spayed material flow with preset amplitude Δmiddle position. Value ΔL is selected depending on the required displacementδ. The cycle of said movement is synchronized with rotation of the rotor, and the rotor is oriented by the imbalance vector to a certain side relative to the source of sprayed material. The rotation drive is connected to the rotor fastening elements by means of a single-track shaft, in which the crankpin has eccentricity ΔL relative to the axis of rotor rotation. Said crankpin and the stop rigidly fixed on the chamber base are connected to the connecting rod ends by means of hinges. The rotation drive is mounted on guides which determine possibility of its reciprocation along the axis of sprayed material flow. In this case, the distance between the axes of hinge is varied, and the crankpin is mounted for changing the eccentricity ΔL relative to the axis of rotor rotation.EFFECT: improvement and stability of electrostatic gyroscope rotor manufacturing due to correction of imbalance, while maintaining geometric parameters of the sphere.2 cl, 4 dwg

Thermal pipe with electrohydrodynamic generator // 2638708
FIELD: heating system.SUBSTANCE: heat pipe with an electrohydrodynamic generator, in which a partition 17 is installed inside the steam channel 4 at the level of nozzles 8. Also outside the case two metal containers 13 are installed, inside of each of which one ionizing electrode and one collector of charges are installed. Wherein, steam supply ducts 18 and outlet ducts 20 are additionally installed above and below the partition 17, and vortex chambers 19 are installed between the upper ends of condensate lines 7 and the nozzles 8. Moreover, the steam supply ducts 18 are installed tangentially relative to the vortex chambers 19, which allows for more efficient spraying of the condensate, thereby increasing the distance overcome by the drops between ionizing electrodes and collectors 6 in metal containers 13.EFFECT: invention makes it possible to raise the efficiency of electrostatic generator.2 cl, 2 dwg

Suspension distributor and method for its use // 2638666
FIELD: machine engineering.SUBSTANCE: gypsum suspension mixing and distribution unit includes a mixer configured for mixing water and calcined gypsum to form water calcined gypsum suspension, and the suspension distributor communicating with the mixer by fluid medium. The suspension distributor includes a feed tube having a first inlet portion with a first inlet feed opening and the second inlet portion with a second inlet feed opening located at a distance from the first inlet feed opening. The first inlet feed opening is adapted to receive the first flow of aqueous calcined gypsum suspension from said mixer and the second inlet feed opening is adapted to receive the second flow of aqueous calcined gypsum suspension from said mixer. In addition, the suspension distributor includes a distribution tube, extending generally along the longitudinal axis and comprising an inlet portion and an outlet distribution opening in fluid communication with the inlet portion which is in fluid communication with the first and second feed openings of the feed tube. Wherein the outlet distribution opening extends a predetermined distance along a transverse axis substantially perpendicular to the longitudinal axis. In this case, the outlet distribution opening in fluid communication with the first and second inlet feed openings and is configured to discharge the first and second flows of the aqueous calcined gypsum suspension from said suspension distributor through the outlet distribution opening. The cross-sectional area of the distribution tube inlet portion openingis greater than the total area of cross-sectional area of the first and the second inlet feed openings.EFFECT: increase in efficiency of mixing and distribution of gypsum suspension.22 cl, 39 dwg, 3 tbl

Pneumatic caps with shaped inserts for liquid spray guns // 2638399
FIELD: machine engineering.SUBSTANCE: pneumatic cap for liquid spray gun includes a basic link including a body, a pair of air bell mouths, each of which includes an outlet air hole and a cap nozzle hole. The pneumatic cap also includes a shaped insert attached to the body including a bridge and a pair of profiled air holes. Each outlet air hole is designed to direct air to one pair of profiled air holes. Each pair hole of profiled air holes is located at opposite end of pneumatic cap spray axis. The basic link also includes at least one pair of air bell mouths that have at least one pair of outlet air holes. The set includes a number of pneumatic caps, where the pairs of profiled air holes of at least two shaped inserts are made in different configurations. The method for manufacturing the pneumatic cap consists in production of shaped insert containing the bridge and the pair of profiled air holes, production of the basic link, including the pair of air bell mouths, each having an outlet opening, and assembling shaped insert with the basic link to produce the pneumatic cap. Each outlet air hole is designed to direct air to one pair of profiled air holes. The spray head unit for attachment to liquid gun sprayer consists of a barrel and any of the pneumatic caps. The liquid gun sprayer comprises a spray head unit assembled with the body of liquid spray gun.EFFECT: reducing production costs, increasing the accuracy of manufactured parts and providing design capacity of the spray guns.29 cl, 17 dwg
Injector with screw conical swirler // 2638357
FIELD: machine engineering.SUBSTANCE: injector with a screw conical swirler contains a body and coaxially arranged and rigidly connected union with an inlet cylindrical hole which is connected to the diffuser made axisymmetrical in the body, on the cut of which there is a perforated disc. A nozzle with at least three projections centering it in axial cylindrical chamber is located in lower part of body. The nozzle is made with a central hole, on the inner surface of which a screw thread is made. A hollow screw conical swirler with screw thread is placed between perforated disc and the nozzle, at that the nozzle is pressed against the injector body by threaded washer with a central confusor.EFFECT: invention allows to improve quality of liquid spraying, injector performance, and to reduce hydraulic losses.1 dwg
 
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