RU176938U1 - Slot adapter - spray nozzle with ring adapter for one-component polyurethane insulation - Google Patents

Abstract

The proposed utility model relates to spraying devices and is intended for applying viscous one-component polyurethane compositions with a density of 1.1 kg / ms or more with pre-dissolved gases with a boiling point of less than zero degrees Celsius. The slot adapter for spraying a liquid medium from an aerosol container contains stops in the form of flat plate protrusions located in one line, and a cylindrical housing perpendicular to the stops, the exhaust cylinder of which contains two protrusions located parallel to each other and perpendicular to the stops of the body, while the protrusions are indented from the edges of the cylinder, which, in turn, contains a nozzle with a through hole and beveled walls, with stops extended upward above the surface of the nozzle parallel to the horizon, the through hole has an oval recess forms with a ratio of length to width 3: 1 with the possibility of creating a flattened jet, and the conical divergence of the jet plume wider, notches 0.6 mm deep are located on the sides of the nozzle, slot adapter p contains fastening means made in the form of a rod fixed at one end to the adapter, and at the other end of which there is a swept tip and an abutment, for fixing the slotted adapter to the ring adapter with a threaded adapter directly placed on the aerosol can. The technical result of the claimed utility model is an expansion of the arsenal of funds.

Description

Technical field

The proposed utility model relates to spraying devices and is intended for applying viscous one-component polyurethane compositions with a density of 1.1 kg / m ³ with previously dissolved gases with a boiling point less than zero degrees Celsius.

State of the art

A device is known from the prior art for supplying aerosol contents by means of gas pressure from the inside, and more particularly to spray heads used in mounting guns, applying a pressurized aerosol substance in a contact manner in the form of jets and / or sprays applied to various surfaces ( patent RU No. 2623276 IPC B05B 1/00, publ. 06.23.2017).

A known device for supplying aerosol contents by means of gas pressure from the inside, and more particularly to spray heads used in mounting guns, applying an aerosol substance under pressure in a contact manner in the form of jets and / or sprays applied to various surfaces. The spray nozzle of the mounting gun for controlled aerosol spraying of the polyurethane medium under pressure contains a cylindrical body provided with a base at the first end with a landing hole extending inside the said cylindrical body, forming a cavity in it for accommodating the gun barrel attached to the container containing the aerosol composition and the base is made in the form of protruding beyond the dimensions of the housing oppositely lying in the same plane relative to each other lep nests, the size of which is made sufficient to ensure the fingers of the user’s fingers to place the gun barrel inside the nozzle cavity, a cylindrical elevation is made at the second end of the housing, the diameter of which is smaller than the diameter of the housing, and a through hole made therein is communicated at the outlet of the sprayed medium from the container with a through U-shaped recess through the sides, which is not closed on the sides, the width of which increases in the direction of the outlet of the spray medium, adjacent to the lateral surfaces of the cylindrical elevation are adjacent lamellar protrusions placed opposite each other, the height of which exceeds the height of the cylindrical elevation, and on their lateral outer sides there are sections made to the second end of the cylindrical body, while the wall of the said end has a thickness that ensures that the length of the through hole made in the cylindrical elevation exceeds the last height, the end of the landing hole adjacent to the base is made with an annular cut, and the base petals are made with an anti-slip surface, cr IU, the spray nozzle is provided with means of its mounting at its non-operated position.

A disadvantage of the known technical solution is the limited range of applications, since it is intended for use for mounting guns.

The closest to the claimed technical solution in terms of essential features is a spray nozzle containing a housing with a base made in the form of petals protruding oppositely behind the housing dimensions and with a through step hole at the outlet of which a nozzle with beveled walls is made, expanding towards the sprayed medium, plate protrusions placed opposite each other, fastening means, the nozzle is made in the form of an oval with HAND length to width 1.4-1.8 (patent RU 170718, IPC V05V 1/06, publ. 04.05.2017).

A disadvantage of the known technical solution is the relatively low performance, as well as the impossibility of its use for polyurethane compositions of high viscosity.

A common disadvantage of the known technical solutions is the lack of a description of the proper attachment of the nozzle to the cylinder of polyurethane foam.

Utility Model Disclosure

Thus, the technical problem to which the proposed utility model is aimed is to increase the performance of the slot adapter.

This problem is solved due to the fact that the slotted adapter for spraying liquid from an aerosol can contains stops in the form of flat plate protrusions located on one line, and a cylindrical housing perpendicular to the stops, the exhaust cylinder of which contains two protrusions parallel to each other and perpendicular the body stops, while the protrusions are indented from the edges of the cylinder, which, in turn, contains a nozzle with a through hole and beveled walls, with remote upward above the nozzle surface with stops parallel to the horizon, the through hole has an oval recess with a length to width ratio of 3: 1 with the possibility of creating a flattened jet, and the cone-shaped jet torch divergence is wider, 0.6 mm deep notches are located on the sides of the nozzle, slotted the adapter contains fastening means made in the form of a rod fixed at one end to the adapter, and at the other end of which there is a swept tip and an abutment, for fixing the slotted adapter to the face adapter with threaded adapter directly placed on the aerosol can.

The nozzle has an elongated elliptical shape with sharp edges, in the form of a projection of two intersecting arcs of circles.

The tapered walls of the nozzle form an angle of not more than 50 °, preferably 45 °, to allow maximum flattening of the jet.

The inner surface of the nozzle is a hemisphere with a radius of 1.5 mm to reduce the resistance to the outgoing flow of the substance and increase the uniformity of the deposition of the substance on the sprayed surface.

The ring adapter is equipped with an annular groove on the lower surface in diameter corresponding to the neck of the aerosol can, with the possibility of its fixation on the neck of the can by pressing and hooking with latches in the form of protrusions made on the inner surface of the groove, while the adapter is made with two symmetrical protrusions in the form of wings located perpendicular to each other, in one of which a hole is made, the diameter of which corresponds to the size of the end tip of the slot adapter.

On the inner surface of the spray adapter there are stepped circular protrusions, for the possibility of mounting it, for example, on a mounting gun.

The technical result of the claimed utility model is the expansion of the arsenal of funds.

Brief Description of the Drawings

The inventive utility model is illustrated by drawings, where:

in FIG. 1 shows a slotted adapter, general view;

in FIG. 2 shows a slotted adapter, top view;

in FIG. 3 shows a slotted adapter, side view;

in FIG. 4 shows a slotted adapter, sectional side view;

in FIG. 5 shows a slotted adapter with a ring adapter, a general view.

Utility Model Implementation

The slotted adapter 1 for spraying a liquid medium from an aerosol can (not shown in the drawings), for example, a one-component polyurethane insulation, contains stops 2 in the form of flat plate protrusions located on one line.

A cylindrical body 3 is located perpendicular to the stops 2, the exhaust cylinder of which contains two protrusions 4 located parallel to each other and perpendicular to the stops 2 of the body 3, which protects the nozzle from damage during storage and transportation, and also facilitates putting the nozzle on the exhaust device, while , in the case of tight donning, the nozzle can additionally be fixed by means of a force stop of the gun with the nozzle strung on a hard surface, so that the nozzle is put on without damaging the nozzle moreover, the stops also serve to prevent undesirable side lateral spraying of the material to reduce material loss and improve the accuracy of application.

The protrusions 4 are indented 5 from the edges of the cylinder 3, which, in turn, contains a nozzle 6 with a through hole 7 and beveled walls, with stops 8 extending upward above the surface of the nozzle parallel to the horizon.

Indentation 5 is caused, on the one hand, by narrowing the passage channel and flattening the jet, and, on the other hand, by saving material and reducing the weight of the adapter.

The through hole 7 has an oval recess with a length to width ratio of 3: 1 with the possibility of creating a flattened jet, and the cone-shaped divergence of the jet plume is wider, 0.6 mm deep notches are located on the sides of the nozzle. This ratio, as well as the depth of the notch, are established experimentally. With a different numerical range, either the desired dispersion of the jet will not be achieved, or the desired flattening of the jet will not be achieved.

The slot adapter includes a fastening means 9 made in the form of a rod fixed at one end to the adapter, and at the other end of which there is a swept tip 10 and an abutment 11, so that the slot adapter can be fixed to the ring adapter 12 with a threaded adapter 13 directly placed on the aerosol can.

On the inner surface of the cylinder there are stepped hooks - circular protrusions 14, which allow it to be mounted on application devices of various diameters. The inner diameter is machined so that the hole is not through, and the undercut does not reach a distance of 0.2 mm from the surface of the end wall. The inner undercut has an increased diameter compared to the known analogues - 3.1 mm with a hemisphere shape with a radius of 1.5 mm at the end, so the minimum wall thickness is provided at the top of the sphere. A conical cut is made on the outer surface of the end wall of the cylinder with a face angle of 50 °, as a result of which a hole of elliptical shape with sharp edges is formed at the junction of the cut faces and the hemisphere, which is the projection of the intersection of two circular arcs. To prevent possible uncontrolled lateral spraying of material on the sides of the slit hole (nozzle), plate protrusions are provided that serve as additional guiding elements and provide a narrowing of the sprayed jet to give it a flat shape. Due to the high viscosity of the applied polyurethane composition, the shape of the nozzle in the form of an ellipse with angular sharp edges is designed in such a way as to ensure the maximum concentration of the applied stream in the center of the jet with a decrease in its concentration along the periphery, which ensures accuracy and uniformity of application with easy flow passage through the hole with minimal resistance and unwanted side spatter.

The ring adapter 12, made of plastic, and fastened to the neck of the aerosol can (not shown in the drawings), is equipped with an annular groove on the lower surface in diameter corresponding to the neck of the aerosol can, allowing it to be fixed on the neck of the can by clamping and engaging with latches in the form of protrusions located on the inner surface of the groove.

The ring adapter 12 has two symmetrical paired protrusions in the form of wings 15 located perpendicular to each other. One of the wings contains an opening, the diameter of which corresponds to the size of the arrow-shaped tip of the slotted spray adapter-nozzle in such a way that this tip can be inserted into this hole by slight deformation by compression. The size of the tip is thus selected in relation to the size of the hole so that the tip inserted into the hole provides a secure fit that prevents spontaneous removal of the tip from the hole, which ensures the integrity of the entire structure.

To remove the tip from the hole, the user must first compress the arrow-shaped lobes of the tip.

Due to the similar implementation of the slot adapter and by repeatedly passing along the surface when applying the insulation composition through the slot adapter, a uniform layer is created that begins to grow (rise above the level of the surface on which it was applied) due to the polymerization chemical reaction that occurs in the applied composition. After completion of the polymerization procedure, the resulting composition is a dense foam-polyurethane cover with high thermal insulation properties. Moreover, the composition itself also represents know-how with maximum thermal insulation properties. For this, a sufficiently viscous composition must be passed through a flat slotted hole so that the applied mass is sprayed onto microdroplets, each of which retains all its components, including trapped gases and silicone foam stabilizers, which expand due to the pressure of the trapped gases contained in system, would ensure uniform growth of the entire applied mass without foci of tears, cracks and other internal defects to ensure uniform thermal insulation properties of the final measuring material.

The uniformity of application and the uniformity of the final applied material is ensured by the fact that the angle of the nozzle faces has a value close to 45 °, but not more than 50 °, which ensures maximum concentration of the applied material at each surface point with uniform application, reducing side spatter material. The reduced level of sprayability, in addition to making the applied material more uniform, also provides material savings, loss reduction and minimizes the risks of adverse effects on the user's health (by inhalation or skin contact). A high concentration of the applied material in the jet plane is also ensured by the unique shape of the inner surface of the nozzle in the form of a hemisphere, which reduces the resistance when the material passes through the hole and creates turbulence in the flows of the applied material and ensures its spraying onto the microdroplets of the required concentration for uniform growth of the material during polymerization.

Petals in the form of protrusions lying on the same line, in addition to stops for the user's fingers, serve as a visual reference in space for the user, given the fact that the nozzle itself is hidden from visual observation. The nozzle is located strictly perpendicular to the petals, therefore, by controlling the position of the petals in space, it is possible to ensure a strictly vertical position of the applied jet. To do this, the petals should be positioned parallel to the horizon line.

All of the above characteristics in the claimed combination allowed to improve performance, in addition to this, a unique feature of this adapter, in addition to the design properties of the nozzle-slot hole shape, is also its consumer properties. This adapter, unlike well-known models, is designed for direct placement on a cylinder with a one-component insulation composition. Moreover, taking into account the fact that the aerosol can is absolutely tight and devoid of any elements for mounting additional components for it, the slotted spray adapter is supplied with a ring adapter that is mounted on the neck of the can. This ring adapter is equipped with a hole, the diameter of which strictly corresponds to the size of the end tip of the slotted spray adapter. Thus, this system allows you to equip each cylinder with a single-component insulation composition with a spray adapter. In turn, on the inner surface of the spray adapter there are stepped circular protrusions that allow it to be mounted on a mounting gun, or other device for applying (spraying) at the request of the user.

The slotted adapter (Fig. 1) and the ring adapter (Fig. 5) are interconnected using paired fastening elements - holes and arrow-shaped tip, the dimensions of which are selected to ensure reliable fixation, eliminating spontaneous separation.

It should be emphasized that the ring adapter is designed and works to solve the problem only in conjunction with the slotted adapter.

A one-component insulation composition is a type of polyurethane foam, but differs from it in a set of components that are selected in such a way as to provide the necessary viscosity and fluidity of the composition for unhindered and uniform passage through the hole of the slot adapter. The shape and dimensions of the hole (nozzle) of the slot adapter and the composition of the components are selected to ensure maximum mutual compatibility so that this slot adapter cannot be effectively applied, ensuring uniform application and high thermal insulation, with other heaters of other manufacturers available on the market. The composition of the insulation is a one-component polyurethane system of pre-mixed mitlen-diphenyl-di-isocyanate (MDI) polyester composition, special additives and extruding propellant gases dissolved in this system.

The proposed utility model is widely used in industry, namely in construction, construction and installation works, insulation of various objects of housing and communal services both during construction and in domestic conditions.

Claims (6)

1. A slotted adapter for spraying a liquid medium from an aerosol can, comprising stops in the form of flat plate protrusions located on one line, and a cylindrical housing perpendicular to the stops, the exhaust cylinder of which contains two protrusions parallel to each other and perpendicular to the body stops, wherein the protrusions are indented from the edges of the cylinder, which, in turn, contains a nozzle with a through hole and beveled walls with the formation of an angle of not more than 50 ° The nozzle surface with stops located parallel to the horizon, the through hole has an oval recess with a length to width ratio of 3: 1 with the possibility of creating a flattened jet, and the cone-shaped divergence of the jet plume is wider, notches are located on the sides of the nozzle, the slot adapter contains fixing means made in in the form of a rod fixed at one end to the adapter, and at the other end of which there is a swept tip and an abutment, for the possibility of fixing the slotted adapter to the ring adapter with threads a new adapter directly placed on an aerosol can. 2. The slotted adapter according to claim 1, characterized in that the nozzle has an elongated elliptical shape with sharp edges in the form of a projection of two intersecting arcs of circles, while the depth of the notches located on the sides of the nozzle is 0.6 mm. 3. The slotted adapter according to claim 1, characterized in that the beveled walls of the nozzle form an angle of preferably 45 ° to allow maximum flattening of the jet. 4. The slotted adapter according to claim 1, characterized in that the inner surface of the nozzle is a hemisphere with a radius of 1.5 mm to reduce the resistance to the outgoing flow of the substance and increase the uniformity of the deposition of the substance on the sprayed surface. 5. The slotted adapter according to claim 1, characterized in that the ring adapter is provided with an annular groove on the lower surface with a diameter corresponding to the neck of the aerosol can, with the possibility of fixing it on the neck of the can by clamping and engaging with latches in the form of protrusions made on the inner surface of the groove the adapter is made with two pair of symmetrical protrusions in the form of wings located perpendicular to each other, in one of which a hole is made, the diameter of which corresponds to the size of the end tip ika slot adapter. 6. The slotted adapter according to claim 1, characterized in that on the inner surface of the spray adapter there are stepwise circular protrusions for the possibility of its fastening, for example, to a mounting gun.

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