KR101975964B1 - Melting heater of thermoplastic paint - Google Patents

Abstract

The present invention relates to a fusion paint dissolving device for dissolving the fusion paint for marking the lane of the road, more specifically, to efficiently supply heat required for melting the fusion paint for marking the lane of the road, In order to suppress the spreading and burning of food paints and to increase energy utilization efficiency, the container is formed into a double tube, the infrared surface burner is used, and the combustion gas between the double tubes is first sprayed on the road where the lane painting is performed. It relates to a dissolution apparatus capable of preheating.

Description

Melting heater of thermoplastic paint

The present invention relates to a dissolving device for dissolving a fusion paint for marking a lane of a road, and more particularly, to efficiently supply heat required for melting the fusion paint for marking a lane of a road. The present invention relates to a structure of a melting apparatus that can suppress steaming or burning and increase energy use efficiency.

In general, the marking of lanes and pedestrian crossings of roads is made by putting a solid fusion paint in a container, heating it with stirring, and melting it, and then applying a liquid fusion paint on the road surface and fixing it to a certain thickness. It is to be possible.

When heat is applied to the outside of the container containing the fused paint in the solid state, heat is transferred through the wall of the container, so that the solid paint in the container melts. At this time, the fused paint requires a lot of heat because it melts at a temperature of 180 ℃ or more. In addition, according to Perry's handbook of chemical engineering, iron (Fe), which is the main component of the container-making material, decreases the heat transfer coefficient as the temperature increases, thereby making melting furnaces with high melting point paints. In order to increase the heat transfer rate, it must be designed and manufactured in consideration of iron heat transfer rate.

Heat transfer rate of iron with temperature Temperature
[K] 60 100 200 300 400 500 600 800 Thermal conductivity ^*
[W / mK] 270 132 94 80 69 61 55 43

Techniques for dissolving fusion paints have been disclosed in Korean Patent Application Laid-Open No. 10-2010-0037423 (Paint Paint Melting Apparatus, hereinafter referred to in the prior art). The prior art includes a container having a lid, a stirrer, and a burner for heating to melt paint components such as solid resins and pigments so as to paint lanes and the like on a road surface.

In the prior art, in order to quickly melt a fusion-type paint having a high melting temperature, a flame caused by a burner is directly contacted with a container to increase the heat transfer rate.In addition, multiple burners are installed to lower the combustion load and increase the heat transfer area. It prevents food from burning or splashing. However, when the flame is directly in contact with the container wall as in the prior art, localized heating occurs at the flame contact portion due to the high heat transfer rate. In order to minimize localized heat, the fusion paint is rapidly stirred in the container or the wall of the container is made thick. However, when the wall of the container is thick, the heat transfer rate is lowered and the energy use efficiency is lowered.

Korean Laid-Open Patent No. 10-2010-0037423 (Paint Melting Device for Road Painting)

The present invention has been made in order to solve the above problems, in the melting device for melting fusion-type paint, to prevent the paint in the container from splashing or burning due to localized heating, and to increase the energy transfer efficiency by increasing the heat transfer rate .

The present invention, in the fusion-type paint dissolving apparatus comprising a paint outlet 300 for discharging the molten paint (A) to the outside, the dissolving apparatus is an infrared surface burner 600 that generates heat in the surface combustion infrared It further comprises a), the lower center of the outer container 200 is formed by cutting so that the infrared surface burner 600 can be inserted, the infrared surface burner 600 is cut out of the outer container 200 Is inserted into and disposed directly facing the lower surface of the inner container 100, the combustion of the infrared surface burner 600 is formed to be made in the space 250 between the inner container 100 and the outer container 200 The infrared surface burner 600 is spaced apart from the lower surface of the inner container 100 by a predetermined interval so that the flame generated during combustion does not directly contact the lower surface of the inner container 100, and the infrared surface burner ( 600) combustion Part of the heat generated in the heating the inner container 100 in the form of radiant energy, and another part of the heat generated during combustion is transferred to the combustion gas (B) generated during combustion, the combustion gas (B) directly Convection inside the space 250 between the inner vessel 100 and the outer vessel 200 is characterized in that indirectly evenly heating the entire inner vessel 100 in the form of convection energy.

Combustion gas (B) flows in the space 250, Characterized in that the gas discharge port 350 for discharging the combustion gas (B) is formed, the melting apparatus includes a combustion gas outlet 370 surrounding the paint outlet 300, the combustion gas outlet 370 Combustion gas B in the inside) is discharged | emitted in the direction in which the said paint A is discharged, and the lane is painted, and the road is preheated.

The burner 600 is characterized in that the pre-mixed infrared surface burner, the burner 600 is installed with a space of 60 ~ 120mm or less with the inner container 100, the burner 600 ) Is penetrated and coupled to a partial region of the outer container 200.

A fusion-type paint dissolving device according to the present invention is a double wall having an inner container and an outer container, the hot combustion gas is passed through the space between the inner container and the outer container without mixing with the outside air, the container has a high temperature of the combustion gas The entire surface of is heat transfer area, so heat transfer speed is fast and heat loss is small. In addition, the thickness of the inner container can be made thin due to the load distribution of the paint contained in the container, and by thinning the wall surface of the container, even if the same amount of heat is supplied, the heat transfer rate is fast, thereby increasing the energy utilization efficiency.

In addition, by using a pre-infrared infrared surface burner, the flame does not directly contact the surface of the container, heat is transmitted by radiant heat, so that a high heat transfer rate can be obtained without local heating, and the entire outer surface of the container is used as a heat transfer area. There are possible advantages.

1 is a cross-sectional view briefly showing the application of the dissolution device according to an embodiment of the present invention.
Figure 2 is a cross-sectional view showing a conventional paint dissolving device.
Figure 3 is a perspective view of the paint dissolving device according to an embodiment of the present invention.
4 is a cross-sectional view taken along line AA ′ of the paint dissolving device according to the embodiment of the present invention;
Figure 5 is a simplified cross-sectional view of the paint dissolving device according to another embodiment of the present invention.
Figure 6 is an enlarged cross-sectional view of the discharged paint according to another embodiment of the present invention.

Hereinafter, the technical spirit of the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the configuration shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be substituted for them at the time of the present application It should be understood that there may be examples.

Hereinafter, the technical spirit of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are only examples to illustrate the technical idea of the present invention in more detail, and thus the technical idea of the present invention is not limited to the forms of the accompanying drawings.

1 is a simplified cross-sectional view showing an application state of the dissolution device according to an embodiment of the present invention. Fusion coating apparatus according to an embodiment of the present invention can be used in a vehicle or the like, as shown in Figure 1, the paint in the container 1000 is transported along the paint outlet 300, the It will be discharged into the molten paint reservoir.

2 is a cross-sectional view showing a conventional paint dissolving apparatus. Referring to FIG. 2, conventionally, in order to melt the paint in a solid state, a container 10 containing the paint and a burner for heating are included. In addition, the stirrer 40 was further provided to mix the paint near the wall surface of the container 10 at the flame contact portion of the burner 20 with the paint inside the container relatively far from the burner 20. However, in the conventional paint dissolving apparatus, even if the paint is mixed inside the container by the stirrer 40, the phenomenon of steaming or burning occurs due to the burner 20 of the direct heating method.

In addition, the conventional paint dissolving apparatus is provided with a blocking wall at regular intervals around the melting furnace 10 in order to prevent the operator from being burned by contact with the hot heated container during the operation. Therefore, the paint supply valve 30 for supplying and blocking the melted paint is also spaced apart from the melting furnace 10 at regular intervals.

The melted paint is transferred to the lane paint apparatus via the paint supply valve 30, and the supply and shutoff interval of the melted paint is long. If you don't, the paint will harden and you won't be able to operate it. That is, in the conventional paint dissolving apparatus, the melting furnace 10 and the paint supply valve 30 are installed at a distance of about 100-150 mm, and when the paint supply valve 30 is left closed, the paint supply valve 30 The paint hardens, and the valve for discharging the paint to the outside does not work. In order to prevent this, the conventional paint dissolving apparatus is installed and operated by a separate heating device, but its structure is complicated and there is a problem that a separate heating device must be installed.

In order to solve the above problems, the fusion paint dissolving device according to an embodiment of the present invention, as a device for melting the fused paint in the solid state in order to display the lane of the road, formed largely double pipe The container 1000 is formed, a burner 600 for heating the paint A in the container 1000, and a paint outlet 300 through which the paint A moves.

Figure 3 is a perspective view of the paint dissolving apparatus according to an embodiment of the present invention, Figure 4 is a cross-sectional view of A-A 'of the paint dissolving apparatus according to an embodiment of the present invention, Figure 5 is another embodiment of the present invention It is a simplified cross-sectional view of the paint dissolving apparatus according to. 3 to 5 will be described in more detail the configuration of the paint dissolving apparatus according to an embodiment of the present invention.

3 and 4, the container 1000 is a double tube, the inner container 100 and the outer container 200, the outer container 200 is provided with a heat insulating material 251 outside. The heat loss through the cross section of the outer container 200 was minimized. The container 1000 is configured to overlap the inner container 100 and the outer container 200 having different sizes, and may be formed by welding by using a support and a combustion gas guide pin according to an embodiment. have. That is, the outer container 200 supports the stress of the inner container 100 by coupling the inner container 100 and the outer container 200 to each other, so that the thickness of the bottom surface of the inner container 100 is half of the existing melting furnace. It is formed so that it can be comprised about 2-10 mm which is the following. In addition, since the heat transfer rate is inversely proportional to the thickness of the heat transfer surface, the heat transfer rate increases as the thickness of the inner container 100 becomes thinner, and the combustion gas guide fin and the support stand serve as fins of the heat exchanger, and thus the inner container 100 ), The heat transfer area increases, and thus the heat transfer rate can increase.

The inner container 100 contains the fusion-type paint (A) in the inner space 150, the inner container 100 is formed on the outer side of the outer container 200 spaced by a predetermined interval. As described above, the inner container 100 and the outer container 200 may be welded and formed through a support and an ointment gas guide pin, but the present invention is not limited thereto and may be spaced apart and fixed with a predetermined space. Any way is possible.

The inner container 100 and the outer container 200 are formed to be spaced apart to have a predetermined space 250, wherein the space 250 is a space in which the combustion gas is movable. At this time, the lower portion of the outer container 200 is cut and connected to the surface burner 600 so that the radiant heat generated from the infrared surface burner 600 passes through the predetermined space 250. On the other hand, the outer container 200 and the surface burner 600 is coupled by sealing in the form of a flange, so that the outside air and the combustion gas in the space 250 is not mixed with each other.

In addition, the inner container 100 and the outer container 200 is melted by the fusion-type paint (A) contained in the inner container 100 by the combustion gas (B) moving through the space 250 formed spaced apart. This will be described later.

The burner 600 is provided to heat and melt the paint A in the container 1000, and the burner 600 is preferably formed of a premixed infrared surface burner 600. Instead of the conventional direct heating method (see FIG. 2) which directly touches the flame of the container 1000 to obtain a high heat transfer rate, the dissolving apparatus according to the embodiment of the present invention radiates red burner while the surface of the burner is red. An infrared surface burner 600 formed of metal fibers, which supplies heat in an electrothermal manner, is provided. The infrared surface burner 600, most of the heat generated by the combustion is converted to the form of radiant energy, some heat is transmitted in the form of convection energy by the combustion gas (B). In addition, since the radiant energy generated through the infrared surface burner 600 is repeatedly absorbed and reflected and heat is transferred, local heating is performed by adjusting the interval between the inner container 100 and the burner 600. It is possible to suppress and use both the lower and wall surfaces of the inner container 100 as the heat transfer area.

The infrared surface burner 600 is installed close to the inner container 100. At this time, if the distance between the infrared surface burner 600 and the inner container 100 is kept close to 50 mm or less, the heat transfer efficiency may be increased. As in the conventional heating method, there is a problem that localized heating occurs. When the infrared surface burner 600 is installed at a distance from the inner container 100, the heat transfer rate is lowered by the radiant heat transfer, but the radiant heat transfer surface can be used widely, and some radiant energy increases the temperature of the combustion gas (B). It is possible to use the heat transfer area to the wall surface of the inner container 100. That is, since the distance between the object and the object to be heated is determined according to the combustion load and the size of the heating surface, the infrared surface burner 600 properly adjusts the distance between the infrared surface burner 600 and the inner container 100 according to the embodiment. It is important to do. That is, the burner 600 is penetrated and coupled to a partial region of the outer container 200, and is installed close to the inner container 100, and according to an embodiment, the burner 600 and the inner container are installed. Adjust the interval of (100) as appropriate.

Since the infrared surface burner 600 supplies red heat to the surface of the burner and radiates red heat, the infrared surface burner 600 is installed on the bottom surface of the container 1000 and used as one large one. In addition, it is also possible to provide a plurality of the outer surface of the container (1000).

In addition, the paint dissolving apparatus according to an embodiment of the present invention, a large container 1000 (Figs. 3 and 4) for the purpose of dissolving the fused paint mounted on a vehicle and a small container 1000 directly used as a lane coating device (Figure 5) can be produced.

As an example, as shown in FIGS. 3 and 4, the large container 1000 that can be mounted and used in a vehicle has a diameter of about 800-900 mm, a height of 900 mm, and a combustion load of about 35-55. Since kcal / cm ² .h, the distance between the surface burner 600 and the inner container 100 is preferably maintained about 60-100 mm.

In painting the lanes, in order to melt a large amount of fused paint as quickly as possible in the large vessel 1000 and supply it to the lane coating apparatus, an infrared surface burner 600 having a large surface area is used rather than increasing the combustion load. It is important to make a lot of heat available. If the combustion load is high, localized heating occurs, and the combustion load is inversely proportional to the size of the infrared surface burner 600. Therefore, in order to increase the dissolution rate of the paint, it is preferable to increase the size of the infrared burner.

The large container 1000 is a paint outlet 300 for discharging the paint (A) in the inner container 100 to the outside and a gas outlet 350 for discharging the combustion gas (B) of the space 250. ). The paint A melted in the container 1000 is moved along the paint outlet 300 to be discharged to the lane paint apparatus for painting.

Most of the heat generated from the premixed infrared surface burner 600 of the large vessel is used to melt the fusion-type paint (A) in the container 1000, so that some of the heat can be discharged along the gas outlet 350 Formed. That is, the gas generated by the combustion reaction flows in the space 250 between the inner container 100 and the outer container 200 to transfer most of the heat, and the rest of the heat is externally provided by the gas outlet 350. Is discharged. At least one gas outlet 350 is installed according to an embodiment, and may be installed in various spaces, which will be described later.

In addition, in the dissolution apparatus according to the embodiment of the present invention, the supply valve 390 through which the dissolved paint is discharged may be directly installed in the outer container 200, and the surrounding of the supply valve 390 may be maintained. That is, by attaching the supply valve 390 to the outer container and keeping the surroundings warm, the supply valve 390 is maintained at a temperature equal to or higher than the dissolution temperature of the paint even when no separate heating device is provided in the supply valve 390. Characterized in that made. That is, the supply valve 390 is heated by the combustion gas B by allowing the supply valve 390 to come into contact with the wall of the outer container 200 through which the high temperature combustion gas B passes.

As another embodiment, as shown in Figure 5 and 6, the small container 1000, unlike the large container 1000 (Figs. 3 and 4) is provided with a combustion gas outlet 370 in the lower, Combustion gas outlet 370 and the paint outlet 300 is made in the form of a double pipe, characterized in that the outlet 300 of the paint dissolved in the double pipe is formed.

The small container 1000 is formed in the same shape as the large container 1000 (FIGS. 3 and 4) by separating the inner container 100 and the outer container 200, thereby forming a predetermined space 250. . However, unlike the large container, the space 250 is blocked as the upper portion is not used as a moving space of the combustion gas (B), but is used as a space for radiant heat transfer.

Here, the small container 1000 directly used as the lane painter is manufactured to have a diameter of 400-600 mm and a height of 500 mm, and may form a combustion load of 60-70 kcal / cm ² .h, and a surface burner 600 ) Is preferably installed at intervals of 80-120 mm with the inner container 100.

When the molten paint (A) for the painting operation moves along the paint outlet (300) and cools, the paint viscosity (300) is reduced and does not move, so the paint outlet (300) is clogged and there is a danger of not operating normally. When the molten paint A is discharged from the container 1000 for painting, the small container 1000 is prevented from cooling while the molten paint A moves along the paint outlet 300. ) Is installed so that the gas discharge port 370 for discharging the combustion gas (B) is positioned around the paint discharge port 300 for discharging the paint (A) in the inner container 100 to the outside, the gas discharge port at the beginning of the operation In order to preheat and maintain the pump and the valve at a predetermined temperature or more, the paint A melted in the container 1000 may be prevented from cooling while moving along the paint outlet 300.

On the other hand, the heat insulator 251 surrounds and forms the gas outlet 370 through which the combustion gas B moves. That is, the heat insulating material 251 is formed to surround the gas outlet 370 as much as possible, so that the temperature of the combustion gas (B) heated from the burner 600 is maintained.

In addition, as shown in FIG. 5, the combustion gas outlet 370 is formed to surround the paint outlet 300, and the combustion gas B in the combustion gas outlet 370 is an end of the combustion gas outlet 370. Through the open space of, it is also possible for the paint A to be discharged in the direction in which it is discharged for the painting operation. The paint coating device moves in one direction while discharging the dissolved paint (A) for painting, and when the combustion gas (B) is discharged through the open space at the end of the combustion gas outlet (370), the combustion gas outlet ( It is also possible to locally heat the road on which the lane is drawn by installing 370 in front of the paint outlet 300 so that the combustion gas B is discharged first on the road in the direction of the painting operation.

In addition, the paint outlet 300, and further comprises a pump 400 and the opening and closing valve 500 is formed. The pump 400 is provided to smoothly move the molten paint (A) while controlling the flow rate to the paint outlet 300, the opening and closing valve 500 is the paint of the paint (A) according to the injection timing It is equipped to control the discharge and blocking. The position of the pump 400 and the on-off valve 500 is not limited to this, and may be installed anywhere to enable the injection and movement of the paint (A).

In addition, the pump 400 and the opening and closing valve 500 is provided away from the container 1000, the heat capacity is large, and operates at room temperature, so if the preheating to a sufficient temperature does not preheat the paint (A) in the initial operation of the pump ( 400) and there is a high possibility of problems in operating the shut-off valve 500. In order to prevent such a phenomenon, it is also possible to further provide a member such as an infrared surface burner or a torch (not shown) in the pump 400 and the on / off valve 500, respectively, to continuously supply heat.

6 is an enlarged cross-sectional view of a paint discharging device according to another embodiment of the present invention, in which paint and combustion gas are discharged. Referring to FIG. 6, the combustion gas B is painted by paint A. FIG. For moving along the direction to move for, it is possible to confirm that the discharge in the direction of the paint operation along the point where the paint is sprayed.

Before the paint (A) is injected, the combustion gas (B) first heats the road, whereby it is possible to increase the adhesion between the paint (A) and the paint discharged for the painting work.

In addition, the pre-mixed infrared surface burner 600 is installed in the lower portion of the container, so that the combustion gas (B) first heats the container and the paint outlet (A) of the paint (A) dissolved with the remaining combustion gas (B) heat at which the temperature is lowered. 300) In addition to maintaining the temperature, the pump 400 and the on-off valve 500, the pre-infrared surface burner 600 is installed around the pump 400 or the on-off valve 500 so that the combustion gas has a high temperature. It is also possible to use (B) first to heat the pump 400 or the valve, and to configure the combustion gas B having a lower temperature to be used for heating the furnace.

The present invention is not limited to the above-described embodiments, and the scope of application is not limited, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

A: Paint
B: combustion gas
10 conventional container 20 conventional burner
30: conventional paint supply valve 40: conventional stirrer
1000: Container
100: inner container
200: outer container
150: interior space
250: space between the inner container and the outer container
251: Insulation
300: paint outlet 350: gas outlet
370: combustion gas outlet 390: supply valve
400: pump
500: on-off valve
600: burner

Claims (6)

In the fusion-type paint melting apparatus comprising a paint outlet 300 for discharging the molten paint (A) to the outside,
The dissolution device further includes an infrared surface burner (600) for generating heat by surface combustion infrared rays,
The lower center of the outer container 200 is formed by cutting so that the infrared surface burner 600 can be inserted,
The infrared surface burner 600 is inserted into the cutout of the outer container 200 and is disposed to face directly to the lower surface of the inner container 100, so that the combustion of the infrared surface burner 600 is carried out with the inner container 100 and the outer side. Is formed to be made in the space 250 between the container 200,
The infrared surface burner 600 is spaced apart from the lower surface of the inner container 100 by a predetermined interval, so that the flame generated during combustion is not formed in direct contact with the lower surface of the inner container 100,
Part of the heat generated during the combustion of the infrared surface burner 600 heats the entire inner container 100 in the form of radiant energy,
The other part of the heat generated during combustion is transferred to the combustion gas (B) generated during combustion, so that the combustion gas (B) convection directly inside the space 250 between the inner container 100 and the outer container 200 Fusion coating material dissolving apparatus, characterized in that evenly indirectly heating the entire inner container 100 in the form of convection energy.
According to claim 1, Combustion gas (B) flows in the space 250,
Fusion paint dissolving device, characterized in that the gas discharge port 350 for discharging the combustion gas (B) is formed.
The method of claim 1, wherein the dissolution device
Combustion gas outlet 370 surrounding the paint outlet 300, and
The combustion gas (B) in the combustion gas discharge port (370) is sprayed in the direction in which the paint (A) is discharged and paints a lane, thereby preheating the road.
The method of claim 1, wherein the infrared surface burner 600
Fusion coating material melting apparatus characterized in that the pre-mixed infrared surface burner.
The method of claim 1, wherein the infrared surface burner 600
Fusion coating apparatus, characterized in that installed in the inner container 100 and having a gap of less than 60 ~ 120mm.
Claim 6 has been abandoned upon payment of a setup registration fee. The method of claim 1, wherein the infrared surface burner 600
Fusion coating material melting apparatus, characterized in that coupled to penetrate through a portion of the outer container 200.

Images