RU138424U1 - SPRAY DEVICE FOR HIGH-REACTIVE QUICK-CURING ELASTOMERIC MATERIALS - Google Patents

Abstract

1. A device for spraying highly reactive quick-setting elastomeric materials, comprising a collapsible gun having a handle with a component supply unit located in its upper part, with one air supply channel and two liquid or gel-like elastomeric materials supply channels made inside this unit, a barrel , collapsible connected to the handle in the area of the outlet of the aforementioned component supply unit and at the outlet having a spraying unit with a nozzle, a disposable static mixer, flaxed from a plastic tube with spiral partitions and placed inside the barrel concentrically to its body so that between the inner surface of the barrel and the outer surface of the tube there is a gap into which the air supply channel passes, the inlet and outlet openings are made in the tube at their respective ends, and the inlet is static the mixer is located on the side of the inlet part of the barrel, and the outlet is on the side of the outlet part of the barrel, and the feed channels are liquid or gel-like elastomeric material in the node of the component supply connected to the inlet of the tube of the static mixer, and this node in the aforementioned place has a conical protrusion immersed in the inlet of the tube of the static mixer, characterized in that the channel of supply of the components of the pigment pigment is formed, which is connected to one of mentioned channels for supplying liquid or gel-like elastomeric materials and is located at an angle relative to it, a sleeve is inserted into the spraying unit, which is movably connected to the outlet of the barrel with a possible

Description

This utility model relates to chemical technology, namely: to devices for spraying and applying highly reactive fast-curing elastomeric materials: polyurea or polyurethane, as well as mixed (hybrid) elastomeric materials based on polyurea and polyurethanes.

The invention is known "Low pressure dispensing gun" (see US patent No. 6131823, IPC B05B 1/28, publ. 17.10.2000). It is a device for spraying liquid or gel-like elastomeric materials, containing a collapsible gun having a handle with a component supply unit located in its upper part, a barrel collapsibly connected to the handle in the area of the outlet of the component supply unit and having at the output a spraying unit with a nozzle, a disposable static mixer made of a plastic tube with spiral partitions, placed inside the barrel concentrically to its body so that between a clearance is formed on the inside of the barrel and the outside of the tube. Moreover, channels are formed in the component supply unit, of which one is an air supply channel and two are liquid or gel-like elastomeric materials supply channels. The air supply channel passes into the gap between the outer surface of the tube of the static mixer and the inner surface of the barrel. In the tube of the static mixer there are several inlet and outlet openings at their respective ends, while the inlet openings are located on the side of the inlet part of the barrel, and the outlet openings are located on the side of the outlet part of the barrel. The output end of the tube of the static mixer is made cone-shaped, entering the nozzle, and concentric holes are formed around the nozzle in the spraying unit connected to the gap between the tube of the static mixer and the inner wall of the barrel. The feed channels for liquid or gel-like elastomeric materials in the component feed assembly are connected to the inlet of the static mixer tube. A cone-shaped protrusion is formed at the output of the component supply assembly so that it fits snugly into the inlet of the static mixer. The device can be used for applying various coatings, including various quick-hardening elastomeric coatings.

The known device for spraying is selected as a prototype, since it has the largest number of essential features that match the essential features of the claimed utility model.

However, the prototype has significant disadvantages, namely:

- low functionality due to the impossibility of spraying elastomeric materials of different colors without the use of additional structural elements, in which mixing with the pigment occurs before the elastomeric components are fed into the spray device;

- low quality of mixing of elastomeric components, since curing of elastomeric components on a cone-shaped protrusion is possible (and, as a result, uneven flow of one component or another into the mixer tube or complete cessation of the spraying process), and in the worst case, leakage and possible curing of the elastomeric mixture in outlet openings, as a result of which a complete disassembly of the gun and cleaning of the holes will be required, which leads to loss of functionality of the entire device;

- low reliability of the device, since if a component enters the channel that is not intended for it, fast polymerization of the components and the mixture solidifies inside the component supply unit, and as a result, the need to clean the outlet openings of the spray gun and stop the operation of the entire device.

Thus, if you increase the functionality of the device by known methods, then this inevitably leads to a deterioration in the reliability of its operation and, as a consequence, a deterioration in the quality of the coating. When using other devices to improve the atomization of materials, this device loses its functionality.

The objective of this utility model is to create a new device for spraying highly reactive fast-curing elastomeric materials, with the achievement of the following technical result, namely, to increase its functionality while improving the reliability and quality of mixing components.

The problem is solved due to the fact that:

- a feed pigment paste paste channel is formed in the component supply unit, which is connected to one of the above channels for supplying liquid or gel-like elastomeric materials and is located at an angle relative to it;

- a sleeve is introduced into the spraying unit, which is movably connected to the output part of the barrel with the possibility of changing the spraying intensity;

- the outlet of the tube of the static mixer has a straight end and in its area with access to it there are grooves with a through cut of the said end;

- in the component supply unit, on the cone-shaped protrusion, latches of the working position of the tube are formed, which has recesses corresponding to them, the said protrusion is also completed by a partition separating the channels of their supply to the tube in the component supply unit.

The essence of the claimed technical solution lies in the fact that the device for spraying highly reactive, hardenable elastomeric materials, containing a collapsible gun having a handle with a component supply unit located in its upper part, with one air supply channel and two channels for supplying liquid or gel-like elastomeric materials made inside this unit, the barrel is collapsibly connected to the handle in the area of the exit of the aforementioned component supply unit and at the outlet having a spray unit with nozzle, a disposable static mixer made of a plastic tube with spiral baffles and placed inside the barrel concentrically to its body so that there is a gap between the barrel’s inner surface and the tube’s outer surface, the air inlet and outlet are made in the tube the respective ends, and the inlet of the static mixer is located on the side of the inlet part of the barrel, and the outlet is on the side of the outlet part of the barrel, the channels for supplying liquid or gel-like elastomeric materials in the component supply unit are connected to the inlet of the static mixer tube, and this node in the aforementioned place has a cone-shaped protrusion immersed in the inlet of the static mixer tube, according to the present utility model, a pigment paste paste supply channel is formed connected to one of the aforementioned channels for supplying liquid or gel-like elastomeric materials and located at an angle relative to it, into the atomization unit there is a sleeve that is movably connected to the output part of the barrel with the possibility of changing the spray intensity, the output end of the static mixer has a straight end and grooves with a through cut of the said end are made in its area with an exit to it, working position locks are formed in the component supply unit on a cone-shaped protrusion the tube, which has recesses corresponding to them, the aforementioned protrusion is also completed by a partition separating the channels for supplying them to the tube in the component supply unit.

There is an option for the development of the main technical solution, which consists in the fact that in the upper part of the handle housing there is an air supply regulator connected to the air supply channel.

Thus, the claimed technical solution, with its entire set of essential features, allows to achieve the claimed technical result, namely, to increase functionality by providing the ability to supply the coloring pigment and applying elastomeric coatings of different colors without the use of additional structural elements, due to the introduction of a separate channel for supplying the pigment pigment paste connected to the feed channel of liquid or gel-like elastomeric materials, and by providing the possibility of adjusting the intensity of spraying, due to the fact that a sleeve is inserted into the spraying unit with the nozzle, which is movably connected to the output part of the barrel. In addition, this sleeve can also be used for purging - cleaning air channels.

At the same time, an increase in the reliability of the device is achieved by separating the supply channels of liquid or gel-like elastomeric materials with the help of a partition made at the end of the conical protrusion in the component supply unit, therefore, the curing of the elastomeric materials does not occur on the conical protrusion, even before it enters the static mixer, and the quality of mixing of the components is improved by ensuring uniformity of mixing and uniformity of air supply to the atomization unit. In this case, the uniformity of mixing of the components occurring directly inside the static mixer is achieved due to the strong fixation of the static mixer in the working position in the barrel relative to the component supply channels with the help of the working position clamps of the tube made on a conical protrusion. And the uniformity of air supply to the atomization unit is ensured by the fact that grooves with a through cut are made on the rectilinear end of the outlet of the tube of the static mixer, which contributes to the formation of the atomization torch.

As a result, the functionality of the device is increased while increasing its reliability and the quality of mixing the components, since all nodes of the device function reliably and provide high quality atomization of the components.

The essence of the claimed utility model and the possibility of its practical implementation is illustrated by the description and drawings below.

Figure 1 shows a device for spraying highly reactive quick-hardening elastomeric materials in assembled form (side view).

Figure 2 presents a device for spraying highly reactive quick-setting elastomeric materials in disassembled form (view aa).

Figure 3 presents a device for spraying highly reactive quick-setting elastomeric materials in disassembled form (side view).

1. crank

2. component supply unit

3. trunk

4. spray unit

5. nozzle

6. static mixer

7. air supply channel

8. feed channel for liquid or gel-like elastomeric materials

9. spiral baffle

10. static mixer tube inlet

11. static mixer tube outlet

12. barrel inlet

13. barrel exit

14. cone-shaped protrusion

15. feed channel pigment paste

16. sleeve

17. groove with a through cut

18. tube working position lock

19. recession counter

20. partition

21. the gap between the inner surface of the barrel and the outer surface of the tube

22. air regulator

23. stopcock

A device for spraying highly reactive rapidly setting elastomeric materials (Figs. 1-3) comprises a collapsible gun that has a handle 1 with a component supply unit 2, a barrel 3, at the outlet having a spraying unit 4 with a spray nozzle 5, a disposable static mixer 6.

The component supply unit 2 is located in the upper part of the handle 1, it has one channel 7 for supplying air and two channels 8 for supplying liquid or gel-like elastomeric materials.

The barrel 3 is collapsibly connected to the handle 1 in the area of the output of the component supply unit 2.

The static mixer 6 is made of a plastic tube with spiral partitions 9. The inlet and outlet openings 10, 11 are made in the tube of the static mixer 6 at their respective ends, while the inlet 10 of the static mixer is located on the side of the inlet 12 of the barrel, and the outlet 11 is side of the output part 13 of the barrel.

Channels 8 for supplying liquid or gel-like elastomeric materials in the component supply unit 2 are connected to the inlet 10 of the tube of the static mixer 6; and this assembly 2 at said location has a conical protrusion 14 buried in the inlet 10 of the tube of the static mixer 6.

In the component supply unit 2, a pigment paste paste supply channel 15 is formed, which is connected to one of the said channels 8 for supplying liquid or gel-like elastomeric materials and is located at an angle relative to it.

A sleeve 16 is inserted into the spraying unit 4, which is movably connected to the barrel outlet portion 13 with the possibility of changing the spraying intensity.

The outlet 11 of the static mixer 6 has a straight end and in its area with an exit to it grooves 17 are made with a through cut of the said end.

In the component supply unit 2, on the cone-shaped protrusion 14, latches 18 of the working position of the tube are formed. The tube has recesses corresponding to them 19. Also, the conical protrusion 14 is completed by a partition 20 dividing corresponding channels in the component supply unit 2. The tube of the static mixer 6 is placed inside the barrel 3 concentrically to its body so that between the inner surface of the barrel 3 and the outer surface of the tube of the static mixer 6 there is a gap 21 into which the air supply channel 7 passes.

In the upper part of the housing of the handle 1 there is an air supply regulator 22 connected to the air supply channel 7 and designed to reduce or increase the volume of the supplied air. The air supply regulator 22 can be made, for example, in the form of an adjusting screw or a shut-off valve.

To shut off the supply of liquid or gel-like elastomeric materials, the channels 8 for supplying liquid or gel-like elastomeric materials are equipped with an overhead valve 23, which includes two ball valves (conventionally shown in the drawing) installed on each channel 8 of supplying liquid or gel-like elastomeric materials.

Thus, the technical result of the claimed utility model is achieved, namely: improving the reliability of the work, improving the quality of mixing the components, ensuring the regulation of the spraying intensity, as well as expanding the scope without introducing additional structural elements.

The assembly of the device for spraying highly reactive quick-setting elastomeric materials is as follows: a static mixer 6 is placed inside the barrel 3 so that the inlet 10 of the static mixer 6 is located on the side of the inlet 12 of the barrel 3 and the outlet 11 on the side of the outlet 13 of the barrel 3. A sleeve 16 with a spray nozzle 5 is screwed onto the output part 13 of the barrel 3. Then the barrel 3 with a movably fixed sleeve 16 and a static mixer 6 located inside is connected to the handle 1 Thus, so that the cone-shaped protrusion 14 is immersed in the inlet 10 of the tube of the static mixer 6, and the mixer 6 itself is rigidly fixed in the working position using the corresponding latches 18 and their corresponding recesses 19. An air supply regulator 22 is connected to the air supply channel 7 . Then, the corresponding hoses (not shown) are connected to the air supply channel 7 and to the channels 8 for supplying liquid or gel-like elastomeric materials and to the channel 15 for supplying the pigment paste.

A device for spraying highly reactive hardened elastomeric materials works as follows.

Before starting work, connect the hoses from the cylinders with air, liquid components and dye to the channels 7, 8, 15, respectively. Using a shut-off valve 23, channels 8 for supplying liquid or gel-like elastomeric materials are opened, through which components are supplied, at the same time, air is supplied through the air supply channel 7, if necessary to obtain a color coating, a corresponding dye is supplied to pressure pigment paste supply channel 15 under pressure in the form of coloring pigment paste. Then the components fall into the tube of the static mixer 6, where due to the presence of spiral baffles 9, intensive mixing of the flows of components occurs and a chemical reaction is carried out. Air flows around the tube of the static mixer 6, moving along the gap 21 between the inner walls of the barrel 3 and the outer walls of the static mixer 6, then it enters the spraying unit 4, passing through the grooves 17 with a through cut made at the end of the outlet 11 of the static mixer 6. In the assembly 4 of the spraying, the components are mixed with air (in this case, air is used only to form a denser spray jet) and then they are sprayed onto the surface, as a result of which, quick-hardening is formed on it elastomeric coating. The spray intensity can be adjusted, for example, due to the movable connection of the sleeve 16 and the output part 13 of the barrel.

As a result, the proposed utility model allows to increase the functionality of the device used for spraying highly reactive fast-curing elastomeric materials, while improving the reliability of its operation and the quality of mixing components.

Claims (2)

1. A device for spraying highly reactive quick-setting elastomeric materials, comprising a collapsible gun having a handle with a component supply unit located in its upper part, with one air supply channel and two liquid or gel-like elastomeric materials supply channels made inside this unit, a barrel , collapsible connected to the handle in the area of the outlet of the aforementioned component supply unit and at the outlet having a spraying unit with a nozzle, a disposable static mixer, flaxed from a plastic tube with spiral partitions and placed inside the barrel concentrically to its body so that between the inner surface of the barrel and the outer surface of the tube there is a gap into which the air supply channel passes, the inlet and outlet openings are made in the tube at their respective ends, and the inlet is static the mixer is located on the side of the inlet part of the barrel, and the outlet is on the side of the outlet part of the barrel, and the feed channels are liquid or gel-like elastomeric material in the node of the component supply connected to the inlet of the tube of the static mixer, and this node in the aforementioned place has a conical protrusion immersed in the inlet of the tube of the static mixer, characterized in that the channel of supply of the components of the pigment pigment is formed, which is connected to one of mentioned channels for supplying liquid or gel-like elastomeric materials and is located at an angle relative to it, a sleeve is inserted into the spraying unit, which is movably connected to the outlet of the barrel with a possible In order to change the spraying intensity, the outlet of the tube has a straight end and in its area with access to it, grooves are made with a through cut of the said end; in the component supply unit, on the cone-shaped protrusion, clamps of the working position of the tube are formed, which has recesses corresponding to them, also referred to the protrusion is completed by a partition dividing the channels for supplying them to the tube in the component supply unit. 2. A device for spraying highly reactive rapidly setting elastomeric materials according to claim 1, characterized in that in the upper part of the handle body there is an air supply regulator connected to the air supply channel.

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