RU200100U1 - TWO-COMPONENT APPLICATION DEVICE - Google Patents

Abstract

A device (1) for applying a two-component composition, comprising a body (2) having two channels (5) for the passage of components, separated from each other and extending along the length of the body (2), a nozzle (3) for mixing the components of the composition and spraying the composition, connected to the body (2), means (7) for controlling the flows of the components of the composition and connecting elements (6) for connection with the cylinders containing the components of the composition, characterized in that the body (2) has inlet pipes (4) into which the channels (5 ) for the passage of the components, while the specified connecting elements (6) are directly connected to the specified inlet pipes (4). 4 ill.

Description

The field of technology.

The utility model relates to devices for applying two-component compositions on the surface, the components of which must be mixed immediately before application, and can be used in various fields of technology for applying sealing, insulation, insulating, waterproofing, fireproof and other similar coatings.

State of the art.

Means for applying two-component compositions are widely used in various fields of activity. In particular, it is known in construction to use polyurethane foam obtained by mixing two components - polyol and isocyanate. Low thermal conductivity, low vapor permeability, high waterproofing and adhesive properties make it possible to successfully use polyurethane foam for thermal, vapor and waterproofing of various objects.

Devices for applying two-component formulations traditionally comprise a spray gun for mixing the components of the formulation and spraying the resulting mixture onto the surface to be treated, and connecting hoses through which the components enter the spray gun from cylinders containing the components. A prerequisite for the operation of such devices is that the components of the composition come into contact with each other only when they enter a specially designed element (nozzle) of the atomizer, since the reaction of the components will inevitably lead to the failure of the atomizer.

In particular, devices are widely known, the atomizer of which is made in the form of a "pistol".

Such a spray is equipped, for example, in a device for applying polyurethane, marketed under the trademark "Froth-pak", information about which at the time of preparation of the application is available from the source / 1 / "FROTH-PAK" // URL: http: // www .ppu21.ru / article / 421.html? mc = 272 (date of access 06/30/2020).

In the specified device, the sprayer body contains an inlet part containing fittings fixed in the body by staples, to which the ends of the hoses supplying the components to be mixed are attached, and an outlet part adapted to be connected to the spray nozzle. The connections of the ends of the nipples with the body contain seals.

The mechanism for controlling the flow of components is made using a metal locking element with holes inserted into a through hole made in the sprayer body between the inlet and outlet. The ends of the locking element are attached to the handle, pressing on which causes the locking element to rotate, as a result of which the holes made therein align with the spray nozzle mounting slots inside the housing, thereby allowing the components to enter the nozzle.

The nozzle includes a part that is installed in the outlet of the gun and a nozzle, inside which a screw-shaped element is located. The presence of a screw-shaped element ensures the movement of the components entering the nozzle along a spiral, during which they are mixed with subsequent exit through the nozzle tip of the finished mixture.

A pistol having a similar operating principle is also described in the source / 2 / US 6431468, published 13.08.2002.

Despite the relatively reliable mechanism for controlling the flows of components, in the device under consideration, the possibility of mixing individual components before they enter the nozzle is not excluded. This is particularly the case, for example, if the seals are worn or damaged. In addition, the presence of hoses that supply the components of the composition to the fittings does not allow working with components contained in cylinders under high pressure, both due to the risk of hose rupture and due to the relatively large number of connection areas between the body elements.

To increase the reliability of the device, including under high pressure conditions, a technical solution was proposed, described in the source / 3 / RU 195633, published 02/03/2020.

Such a device contains a nebulizer and hoses for supplying the components of the composition to be applied, connected to the nebulizer and having connectors for connecting to the cylinders containing the components of the composition. The sprayer body is made in one piece with the fittings and has two channels, separated from each other and extending from the ends of the fittings along the entire length of the body. The housing also has two spaced apart slots with openings for the passage of components. In addition, the atomizer is equipped with a component flow control means comprising two blocking elements with openings for the passage of components configured to move between an opening position in which the openings for the passage of components in the slots are aligned with the corresponding openings of the blocking elements, opening the passage for the passage of components, and a closed position in which the locking elements close off the component passages. The specified device is chosen by the applicant as the closest analogue (prototype) of the utility model.

In such a device, the channels for the passage of the components always remain isolated from each other and mixing of the components before they exit the housing into the nozzle is completely excluded, which ensures high reliability of the device. The minimum number of connection areas between the body elements also increases the reliability of the device at high pressures of the composition components.

However, despite the fact that such a device makes it possible to work with cylinders containing the components of the composition under pressure up to 20 bar, the presence of hoses for supplying the components of the composition prevents a further increase in the operating pressure range. In addition to the risk of bursting hoses, the use of hoses causes a pressure drop due to hydraulic resistance of the hoses. At the same time, an increase in the pressure under which the components enter the spraying device would contribute to better mixing of the components and fine dispersion of the finished composition.

In addition, when working with the above-described device, the user needs not only to operate the device, but also simultaneously hold the cylinders connected to the hoses, which can be installed in a special holder. Thus, in the course of working with the device, both hands of the user are occupied, which limits the possibility of manipulation and reduces the convenience of working with the device.

Based on the foregoing, the technical problem to be solved by the utility model consists in creating a compact and easy-to-use device for applying a two-component composition, which ensures reliable operation under high pressure conditions while ensuring high quality of application of the composition to the surface.

Disclosure of the essence of the utility model.

The above technical problem is solved in the present invention by creating a device for applying a two-component composition comprising a body having two channels for the passage of components, separated from each other and extending along the length of the body, a nozzle for mixing the components of the composition and spraying the composition, connected to the body, means control of the flows of components of the composition and connecting elements for connection with cylinders containing the components of the composition. Moreover, according to the utility model the body has inlet nozzles into which channels for the passage of components exit, while these connecting elements are directly connected to the inlet nozzles of the body.

In the device for applying a two-component composition according to the utility model, the possibility of mixing the components of the composition before they enter the nozzle is excluded, since the channels through which the components pass inside the body are separated from each other and go out into the inlet nozzles that are part of the body, into which the components of the composition entering from cylinders. This design, in combination with the minimum number of connection areas between the body elements, ensures reliable operation of the device at high pressures of the composition components. Due to the fact that the connecting elements for connection to the cylinders containing the components of the composition are directly connected to the inlet nozzles of the body, there is no need for the use of hoses, which also allows the supply of the components of the composition from the cylinders at a higher pressure, since there is no risk of hose burst and pressure drop from - for their hydraulic resistance. The supply of components to the nozzle at a higher pressure and a reduction in the distance between the cylinders and the nozzle promotes the supply of components to the nozzle in equal proportions, improves mixing of the components in the nozzle and allows a finely dispersed composition to be obtained at the outlet of the nozzle, thereby increasing the quality of the application of the two-component composition on the surface.

In addition, attaching the balloons directly to the device body makes the device more compact and eliminates the need to hold the balloons, making the device more convenient to use.

Thus, the present utility model proposes a compact and easy-to-use device for applying a two-component composition, which ensures reliable operation under high pressure conditions with obtaining a high quality of application of the composition to the surface.

According to an embodiment of the invention, the housing has two spaced apart receptacles with openings for the passage of components, the flow control means for the components having two locking elements with openings for the passage of components movable between an opening position in which the openings for the passage of components are in the seats are aligned with the corresponding openings of the locking elements, opening the channels for the passage of the components, and the closing position in which the locking elements close off the channels for the passage of the components.

According to an embodiment of the invention, the body is made in the form of a "pistol", wherein the means for controlling the flows of components comprises a handle connected to the ends of the locking elements.

This shape of the case further increases the convenience of working with the device due to the convenience of holding it in the hand.

According to an embodiment of the invention, the body is made in one piece by casting. Such an embodiment of the body simplifies the process of manufacturing the device according to the invention and further increases the reliability of its operation under conditions of high pressure of the composition components.

According to an embodiment of the invention, the housing is made of plastic or metal.

According to an embodiment of the invention, the connection of the nozzle for mixing the components of the composition and spraying the composition with the body is detachable.

Thus, the nozzle can be easily detached from the body in case of damage or contamination in order to replace it with another similar nozzle.

According to an embodiment of the invention, the connecting elements are universal adapters capable of being attached to adapters for “cruciform” cylinders.

This allows the device to be used with cylinders widely available on the market equipped with “cross-ring” adapters.

According to an embodiment of the invention, the spray nozzle is a nozzle, inside of which a screw-shaped element is located.

The presence of a screw-shaped element ensures the movement of the components entering the nozzle in a spiral, ensuring effective mixing of the components of the composition.

Brief description of the drawings.

Below the utility model is described in more detail with reference to the accompanying drawings, in which:

- in Fig. 1 is a schematic side view of a device for applying a two-component composition according to the invention;

- in Fig. 2 is a perspective view of a device for applying a two-component composition according to a utility model with a partial cut;

- in Fig. 3 shows a partial cross-sectional view of the body of a prototype device;

- in Fig. 4 shows a partial cross-sectional view of the body of a prototype utility model from the other side.

Implementation of the utility model.

A device 1 for applying a two-component composition according to the invention, schematically shown in FIG. 1, contains a housing 2 and a nozzle 3 connected to the housing for mixing the components of the composition and spraying the two-component composition.

The body 2 can be made in the form of a single piece by casting, for example, from metal or plastic, so as to provide the body strength sufficient to work with the components of the composition coming under pressure from the cylinders.

According to a preferred embodiment of the invention, the nozzle 3 for mixing the components of the composition is fixed to the body 2 in a removable manner and, if necessary, for example, in the event of a nozzle failure or strong clogging of the nozzle by the finished composition, it can be replaced with another similar nozzle.

The attachment 3 can be made of plastic. In this case, it is preferable that the material of the packing 3 is translucent. This will allow you to determine the degree of clogging of the nozzle and assess the need to clean it or, in the case of a detachable connection of the nozzle to the body, replace it with another similar nozzle.

In another embodiment, the connection of the nozzle 3 to the body 2 can be permanent.

The body 2 has two nozzles 4 located in its upper part and forming the ends of channels 5 running along the body length (shown in Fig. 2) for the passage of components. The specified branch pipes 4 are intended for attaching to them connecting elements 6 for connection with cylinders containing the components of the composition.

The device according to the invention also comprises a component flow control means 7, which, according to an embodiment of the invention, includes a handle 8.

FIG. 3 and 4 show a partial view of the device from the source / 3 /, which is the prototype of the present utility model. Since the internal structure and principle of controlling component flows in the device according to the invention are similar to the internal structure and principle of controlling component flows in the device disclosed in the source / 3 /, further description of the device according to the invention is given with reference to FIG. 3 and 4. It should be noted here that, as can be seen in FIG. 3 and 4, the device known from the source / 3 / has fittings for connecting hoses, which are obviously missing in the device according to the invention.

In the body 2 there are two slots 9 having holes 10, 10 ', 11, 11' for the passage of components. These openings 10, 10 ', 11, 11' are part of the channels 5 for the passage of components extending along the length of the body 2 and ending in a section 12 of the body 2 (shown in Fig. 4) intended for attaching the nozzle 3.

According to the utility model, the slots 9 are separated from each other. According to the embodiment of the invention shown in FIG. 3 and 4, the slots 9 are separated from each other by a partition 13.

The means 7 for controlling the flows of components of the composition of the device according to the invention comprises two locking elements of a cylindrical shape (not shown in the drawings) having through holes for the passage of components and made with the possibility of moving between the opening position, in which the holes 10, 10 ', 11, 11' for the passage of the components in the slots 9 are aligned with the corresponding openings of the locking elements, opening the channels for the passage of the components, and the closing position in which the locking elements close off the channels for the passage of the components.

Preferably, the body of the device according to the invention is made in the form of a "pistol". The handle 8 is connected to the ends of the locking elements located in the slots 9. The movement of the locking elements between the opening and closing positions occurs by pressing the handle 8, as a result of which the locking elements rotate, and the holes in them are aligned with the holes 10, 10 ', 11, 11 'made in slots 9.

According to the invention, the body 2 of the device for applying the two-component composition has two completely separated from each other channels 5 for the passage of the components. Each of the channels is formed by a pipe 4 extending into an opening 10 or 11 of the socket 9 and a corresponding opening 10 'or 11' located on the opposite side of the socket 9. As seen in FIG. 1 and 2, each branch pipe 4 is a separate element, completely isolated from the other branch pipe 4. Moreover, according to the utility model, the sockets 9 are also separated from each other. This design of the housing ensures complete isolation of the components as they pass through the device housing 1 and until the components exit into the nozzle 3.

Even in the event of damage or wear of any of the elements of the flow control means of the components of the composition or the body of the device, the channels for the passage of the components always remain isolated from each other and mixing of the components before they exit the body into the nozzle is completely excluded, which ensures high reliability of the device in high pressure conditions.

The body is designed as a single cast piece and is designed for pressures up to 30 bar. The body can be made, for example, of glass-filled polypropylene (SNPP) or glass-filled polyamide of the PA66 grade, as well as of metal, for example, steel or its alloys, duralumin or aluminum alloys.

The nozzle 3 is the only element of the device according to the invention, in which the components of the composition come into contact and mix with each other. The nozzle 3 can be made in the form of a nozzle, inside of which a screw-shaped element is placed, due to which the components of the composition leaving the body 2 into the nozzle 3 move along a spiral path, mixing with each other to form a two-component composition. The outlet part of the nozzle 3 can be made in the form of a tube through which the finished composition leaves the device 1. The end of the tube can have a V-shaped cut, which allows obtaining a wide spray pattern of the composition to be applied.

The branch pipes 4 are directly connected to the connecting elements 6, intended for connection with cylinders containing the components of the composition. The connecting elements 6 are, for example, universal adapters adapted to be attached to the well-known cross-ring adapters placed on cylinders. The fastening of the connecting elements in the nozzles can be carried out, for example, by means of a threaded connection, or in any other suitable way.

From the above description of the device 1 for applying a two-component composition according to the invention it is clear that all its components are connected to each other by assembly operations by means of known fastening means and are in functional and structural unity.

The operation of the device 1 can be carried out as follows.

Before starting work, the device is connected to cylinders containing the components of the composition to be applied to the surface to be treated. For this, the connecting elements 6 are attached to the mating connectors of the cylinders.

Before the start of operation, the device 1 according to the invention is in a closed state, that is, the means 7 for controlling the flows of the components of the composition is switched to the closed position, in which the locking elements block the channels for the passage of the components of the composition.

In order to start applying the composition, the means 7 is brought into the open state by pressing the handle 8 shown in FIG. 1 and 2, due to which the holes in the locking elements are aligned with the holes 10, 10 ', 11, 11' in the slots 9 and the components of the composition pass through the channels inside the body from the nozzles 4 to the outlet part 12 of the body 2, from where they enter nozzle 3.

In the nozzle 3, the components are mixed to obtain a finished two-component composition. The finished composition emerging from the nozzle is applied to the surface to be treated.

Claims (8)

1. Device (1) for applying a two-component composition, containing a body (2) having two channels (5) for the passage of components, separated from each other and extending along the length of the body (2), a nozzle (3) for mixing the components of the composition and spraying composition connected to the body (2), means (7) for controlling the flows of the composition components and connecting elements (6) for connection with cylinders containing the composition components, characterized in that the body (2) has inlet pipes (4), into which channels (5) for the passage of components exit, while said connecting elements (6) are directly connected to said inlet pipes (4). 2. The device according to claim 1, in which the housing (2) has two separated from each other seats (9) with openings (10, 10 ', 11, 11') for the passage of components, and the means (7) for controlling the flows of components has two locking elements with openings for the passage of components, made with the possibility of movement between the opening position, in which the openings for the passage of components in the sockets (9) are aligned with the corresponding openings of the locking elements, opening the channels (5) for the passage of components, and the closing position in which locking elements close off the channels (5) for the passage of components. 3. The device according to claim 2, in which the body (2) is made in the form of a "pistol", and the means (7) for controlling the flows of components comprises a handle (8) connected to the ends of the locking elements. 4. A device according to any one of claims 1 to 3, in which the body (2) is manufactured in one piece by casting. 5. A device according to any one of claims 1 to 4, wherein the housing is made of plastic or metal. 6. Device according to any one of claims 1 to 5, in which the connection of the nozzle (3) for mixing the components of the composition and spraying the composition with the body (2) is detachable. 7. A device according to any one of claims 1 to 6, in which the connecting elements (6) are universal adapters adapted to be attached to adapters for cylinders of the "cruciform ring" type. 8. Device according to any one of claims 1 to 7, in which the nozzle (3) is a nozzle, inside which a screw-shaped element is placed.

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