CN221288566U - Indirect heating indoor liner - Google Patents

Abstract

The utility model provides an indirect heating chamber liner, which is arranged in a heating chamber, and the heat generated by the liner is sent into a coating curing furnace through a circulating fan arranged in the heating chamber to provide heat for the curing of a workpiece; the indirect heating chamber liner comprises a combustion machine, a first liner, a heat conduction pipe, a second liner and a smoke exhaust pipeline; the inner container of combustor is direct for first inner container heat supply, and first inner container passes through the heat supply pipeline and transmits to the second inner container, later, discharges the harmful substance that the combustor burning produced into smoke purifier via exhaust duct. The whole body of the indirect heating chamber is made of a stainless steel plate with the thickness of 3mm, and the indirect heating is circulated through the stainless steel inner container, so that high-efficiency heat energy without naked flame can be generated, and the heat energy is circulated through the centrifugal fan, so that the temperature in the curing furnace is quickly increased, and the curing quality and speed of a workpiece are efficiently ensured; in addition, the indirect heating inner container can effectively prevent carbon dioxide and water vapor from directly volatilizing into the furnace, so that the phenomenon of workpiece reverse embroidery is effectively avoided.

Description

Indirect heating indoor liner

Technical Field

The utility model relates to the technical field of coating production lines, and particularly discloses an indirect heating indoor liner.

Background

In the pretreatment process of coating, in order to ensure that the metal workpiece is not corroded by various media such as light, rain, wind and the like, the coating curing technology is one of the most convenient and reliable protection methods, and the workpiece can be protected, so that the service life of the workpiece can be prolonged. In the curing process of the workpiece, a curing furnace is required to be used for providing the temperature required by coating and curing for the workpiece, in the prior art, when the workpiece is sprayed with plastic in the curing furnace, a burner directly supplies heat to a heating chamber, combustion flame directly exists in the combustion chamber, natural gas is combusted to generate carbon dioxide and moisture, and the carbon dioxide and the moisture can enter the curing furnace to rust the workpiece in the curing furnace.

Disclosure of utility model

In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide the liner used during indirect heating.

In order to achieve the above purpose, the utility model provides an indirect heating indoor liner, which comprises a heating element, a first liner and a second liner matched with the first liner for use; the device also comprises a heat conduction pipe and a smoke exhaust pipeline; a first heating cavity is formed in the first inner container, a second heating cavity is formed in the second inner container, and the heat conduction pipe is communicated between the first heating cavity and the second heating cavity; the heat supply piece is used for providing heat for the first heating cavity, and then the heat in the first heating cavity enters the second heating cavity through the heat conduction pipe; one end of the smoke exhaust pipeline is communicated with the second heating cavity, and the other end of the smoke exhaust pipeline is connected with an external smoke purifier.

Further, the heating element is a burner, the burner is provided with a burner inner container, the first inner container is arranged at the free end of the burner inner container, the burner inner container is provided with a flame nozzle, the flame nozzle is communicated with the first heating cavity, and the burner inner container and the first inner container are arranged in a crossing way.

Further, the heat conduction pipe and the first inner container are arranged in a crossing way, the heat conduction pipe and the second inner container are arranged in a crossing way, and the first inner container and the second inner container are arranged in parallel.

Further, the heat conduction pipe is provided with a plurality of, and a plurality of heat conduction pipes are located between first inner bag and the second inner bag and are rectangular array setting, and the one end of heat conduction pipe switches on first heating chamber, and the other end of heat conduction pipe switches on the second heating chamber.

Further, the indirect heating chamber liner further comprises a flame baffle plate, the flame baffle plate is positioned between the second liner and the heat conducting pipe, the flame baffle plate is provided with a plurality of air holes which are arranged in a displaying way, and heat in the heat conducting pipe is transferred to the second heating cavity through a plurality of air holes which are arranged in an array way; the flame baffle has the function of filtering harmful substances generated by the combustion of the burner and preventing the harmful substances from entering the smoke exhaust pipeline.

Further, the lateral wall of flame baffle is provided with the direction slider, and the inner wall of second inner bag is provided with the direction spout, and flame baffle passes through the cooperation slip setting of direction slider and direction spout in the second inner bag.

Further, the indirect heating inner container also comprises a heating groove matched with the indirect heating inner container, and the indirect heating inner container is arranged in the heating groove; the heating tank is provided with a centrifugal fan which is provided with an air inlet and an air outlet, the air inlet is communicated with the inner cavity of the heating tank and is arranged close to the indirect heating chamber liner, and the air outlet is communicated with the external curing oven; the centrifugal fan is used for extracting hot air generated by the indirect heating chamber liner into the external curing furnace to provide heat for the external curing furnace.

Further, the inner container of the burner, the first inner container, the second inner container, the heat conduction pipe and the smoke exhaust pipeline are all provided with stainless steel outer walls, and the thickness of the stainless steel outer walls is between 2.5mm and 4.5 mm.

Further, the indirect heating chamber outer wall is provided with rock wool heated board, and rock wool heated board outer wall cladding is formed with the galvanized sheet, is provided with corrosion resistant plate outward by the galvanized sheet, and rock wool heated board thickness is 150mm.

Further, the heating tank top is provided with the return air inlet, and the return air inlet is linked together with outside curing oven, and the return air inlet is used for retrieving the heat in the curing oven and recycles.

The utility model has the beneficial effects that: the utility model provides an indirect heating inner container which is arranged in a heating chamber, and heat generated by the inner container is extracted into a coating curing furnace through a circulating fan arranged in the heating chamber to provide heat for workpiece curing; the indirect heating chamber liner comprises a combustion machine, a first liner, a heat supply pipe, a second liner and a waste heat recovery flue; the inner container of the combustion engine is arranged in the first inner container to supply heat for the first inner container, the first inner container transfers heat to the second inner container through the heat supply pipeline, and then harmful substances generated by the first inner container are discharged into the external smoke purifier through the smoke exhaust pipeline. The whole body of the inner container is made of a stainless steel plate with the thickness of 3mm, and the indirect heating can generate high-efficiency heat energy without naked flame through the circulation of the stainless steel inner container, and the heat energy can quickly raise the temperature in the curing furnace through the circulation of the high-temperature-resistant centrifugal fan, so that the curing quality and the curing speed of a workpiece are effectively ensured. In addition, the indirect heating inner container can effectively prevent carbon dioxide and water vapor from volatilizing into the furnace, so that the phenomenon of workpiece reverse embroidery is effectively avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of an indirect heating chamber liner of the present utility model;

FIG. 2 is a cross-sectional view of an indirect heating chamber liner of the present utility model;

FIG. 3 is a partial side view of an indirect heating chamber liner of the present utility model;

FIG. 4 is a schematic view of the flame baffle position of the present utility model;

FIG. 5 is a schematic view of a part of the enlarged structure of the portion a in FIG. 4;

Fig. 6 is a partial top view of a heating tank of the present utility model.

The reference numerals include:

1-a heat supply part 2-a first inner container 3-a second inner container

4-Heat conduction pipe 5-smoke exhaust pipeline 6-flame baffle

7-Heating tank 8-return air inlet

11-Burner inner container 12-flame nozzle 21-first heating cavity

31-Second heating chamber 32-guiding chute

61-Air hole 62-guiding slide block

71-Centrifugal fan 72-rock wool heat insulation board 73-stainless steel plate

74-Movable access door

710-Fan duct

Detailed Description

Referring to fig. 1 to 6, an indirect heating chamber liner of the present utility model includes a heating element 1, a first liner 2, and a second liner 3 cooperating with the first liner 2; the device also comprises a heat conduction pipe 4 and a smoke exhaust pipeline 5; a first heating cavity 21 is formed in the first inner container 2, a second heating cavity 31 is formed in the second inner container 3, and the heat conduction pipe 4 is communicated between the first heating cavity 21 and the second heating cavity 31; the heat supply member 1 is configured to supply heat to the first heating chamber 21, and then, the heat in the first heating chamber 21 enters the second heating chamber 31 via the heat pipe 4; one end of the smoke exhaust pipe 5 is communicated with the second heating cavity 31, and the other end of the smoke exhaust pipe 5 is connected with an external smoke purifier.

When the heating device is particularly used, the indirect heating chamber liner is placed in the heating groove 7, and the indirect heating chamber liner is connected with a combustor or other heat supply equipment; for example, a burner is started, the burner inner container 11 is placed in the first inner container 2, heat is generated by the combustion object to heat air in the first heating cavity 21, the heated air is transferred to the heat conducting pipes 4 along with the driving of combustion flame, in the embodiment, a plurality of heat conducting pipes 4 are arranged, and the heat generated by combustion is uniformly distributed in the second inner container 3 by the plurality of heat conducting pipes 4 to provide heat for the second heating cavity 31;

The heat generated by the first liner 2 and the second liner 3 can be stored in the heating chamber; the high-temperature-resistant centrifugal fan 71 in the heating chamber can extract heat into the curing oven, so that the temperature in the curing oven is quickly increased, and enough heat is provided for curing the workpiece; the second heating cavity 31 is externally connected with a smoke exhaust pipeline 5, and the smoke exhaust pipeline 5 discharges waste gas and harmful substances generated by burning fuel of the burner into an external smoke purifier; for example, carbon dioxide and moisture generated after the natural gas burns can cause the workpiece in the curing oven to rust, and the arrangement of the two inner containers can avoid the phenomenon that the workpiece rusts due to the fact that the carbon dioxide and the water vapor are volatilized into the curing oven directly.

Specifically, the heating element 1 is a burner, the burner is provided with a burner inner container 11, the first inner container 2 is arranged at the free end of the burner inner container 11, the burner inner container 11 is provided with a flame nozzle 12, the flame nozzle 12 is communicated with the first heating cavity 21, and the burner inner container 11 and the first inner container 2 are arranged in a crossing way; in this embodiment, the inner liner 11 of the burner is perpendicular to the first inner liner 2, the combustion nozzle is directly placed in the first inner liner 2 to spray flame to the first inner liner 2, and an inner plate plug (not labeled in the drawing) is disposed on the inner wall of the first inner liner 2 to prevent the inner wall damage caused by the continuous heating of the high-temperature flame to a certain part of the inner liner

In addition, the cross arrangement of the combustor liner 11 and the first liner 2 can enable the heating area of the combustor to be more uniform, improve the heating uniformity of the first liner 2, and can also avoid the problem of local overheating or nonuniform temperature due to the arrangement of the inner plate plug, so that the heating effect is ensured to be more stable and consistent.

Specifically, the heat conduction pipe 4 is arranged in a crossing way with the first inner container 2, the heat conduction pipe 4 is arranged in a crossing way with the second inner container 3, and the first inner container 2 and the second inner container 3 are arranged in parallel; in this embodiment, the heat conducting tube 4 is connected between the first inner container 2 and the second inner container 3 and is perpendicular to the first inner container 2 and the second inner container 3, the first inner container 2 and the second inner container 3 are arranged in parallel, and by arranging the two inner containers at intervals, the two inner containers are connected through the heat conducting tube 4 and are crossed with the inner containers, so that heat loss of the heating inner containers can be reduced in the heating process, and when the combustion flame is directly sprayed into the linear inner containers, the heat collecting point is usually the tail part of the flame, and part of heat around the flame is lost to a certain extent; after the structural design, the heat conduction pipe 4 can conduct heat from one inner container to the other inner container, in the process, the heated air is transmitted for multiple times, so that the heating areas of the two inner containers are effectively utilized, the heating efficiency and the heating speed can be improved, and the heating time and the energy consumption are saved.

Specifically, the heat conducting pipes 4 are provided with a plurality of heat conducting pipes 4, the plurality of heat conducting pipes 4 are located between the first liner 2 and the second liner 3 and are arranged in a rectangular array, one end of each heat conducting pipe 4 is communicated with the first heating cavity 21, and the other end of each heat conducting pipe 4 is communicated with the second heating cavity 31; in this embodiment, the plurality of heat pipes 4 may enable the heat in the first heating cavity 21 to be transferred to the second heating cavity 31 with higher transfer efficiency, and the heat pipe 4 may be made of a material with high thermal conductivity, such as copper or aluminum, so that the heat in the first heating cavity 21 can be quickly transferred to the second heating cavity 31, thereby improving the utilization efficiency of heat energy.

Specifically, the indirect heating chamber liner further comprises a flame baffle 6, the flame baffle 6 is located between the second liner 3 and the heat conduction pipe 4, and the flame baffle 6 is used for filtering harmful substances generated by combustion of the burner to prevent the harmful substances from entering the smoke exhaust pipeline 5; in actual use, the flame baffle 6 can be arranged between the first liner 2 and the combustor liner 11, so that direct flame generated by the combustor liner 11 can be guided and stabilized, a fuel and air mixture is guided to flow to a proper position, so that stable flame is formed in the first heating cavity 21, and the form and position of the flame are controlled to ensure full combustion of the fuel and improve combustion efficiency;

The flame baffle 6 in the embodiment is arranged between the smoke exhaust pipe 5 and the second heating cavity 31, so that the temperature of hot air entering the smoke exhaust pipe 5 can be reduced, and the service life of the smoke exhaust pipe 5 can be prolonged; in addition, if the flame generated by the burner is too large, when the flame directly passes through the heat conduction pipe 4 and enters the second liner 3, the flame baffle 6 can stop the flame at the tail part and prevent the insufficiently combusted fuel in the flame from entering the smoke exhaust pipeline 5, so that the load of the smoke purifier is increased.

Specifically, the flame baffle 6 has a plurality of air holes 61 arranged in a row, and heat in the heat pipe 4 is transferred to the second heating chamber 31 via the plurality of air holes 61 arranged in an array; the side wall of the flame baffle 6 is provided with a guide slide block 62, the inner wall of the second inner container 3 is provided with a guide slide groove 32, and the flame baffle 6 is arranged in the second inner container 3 in a sliding manner through the cooperation of the guide slide block 62 and the guide slide groove 32; in this embodiment, the flame baffle 6 is detachably connected to the second liner 3 through the cooperation of the guide slide block 62 and the guide chute 32, so as to clean the fuel waste filtered by the flame baffle 6 and having insufficient combustion.

Specifically, the indirect heating inner container also comprises a heating groove 7 matched with the indirect heating inner container, and the indirect heating inner container is arranged in the heating groove 7; a centrifugal fan 71 is arranged in the heating tank 7, the centrifugal fan 71 is provided with an air inlet and an air outlet, the air inlet is arranged close to the indirect heating chamber liner, and the air outlet is communicated with an external curing oven; the centrifugal fan 71 is used for extracting hot air generated by the indirect heating chamber liner into the external curing oven to provide heat for the external curing oven.

In this embodiment, a fan air duct 710 is disposed in the heating tank 7, the centrifugal fan 71 conducts the curing oven through the fan air duct 710, in actual use, a grid mesh of a return style may be disposed at the top of the heating chamber, the grid mesh of the return style is connected between the curing oven and the heating tank 7, the burner works as the first heating chamber 21 and the second heating chamber 31 to supply heat, and then the heating chamber begins to heat up, at this time, the centrifugal fan 71 attracts heat to transfer heat to various places in the oven through the fan air duct 710, so that the curing oven heats up rapidly; under the action of the attraction force of the fan, the heat in the furnace enters the fan air channel 710 again after passing through the return air grid, so that the hot air circulation is completed, and the temperature in the furnace is kept uniform; the heating chamber is kept level with the bottom of the furnace, and the heat lost during combustion also flows into the furnace due to the expansion of the return air area, so that the heat loss is reduced.

Specifically, the inner container 11 of the burner, the first inner container 2, the second inner container 3, the heat conducting pipe 4 and the smoke exhaust pipe 5 are all provided with stainless steel outer walls (not labeled in the drawing), and the thickness of the stainless steel outer walls is between 2.5mm and 4.5 mm; in the embodiment, the stainless steel outer wall adopts 3mm thickness, the whole body is subjected to full-welding treatment, the surface is polished smooth, and the surface cutting of the stainless steel outer wall adopts laser cutting.

Specifically, the outer wall of the heating tank 7 is provided with a rock wool heat-insulating plate 72, the outer wall of the rock wool heat-insulating plate 72 is coated with a galvanized plate (not labeled in the figure), the galvanized plate is provided with a stainless steel plate 73, and in the embodiment, the thickness of the rock wool heat-insulating plate 72 is 150mm; the rock wool thermal insulation board 72 is filled with three layers, the first layer and the second layer are mutually staggered, and the third layer and the second layer are also mutually staggered, so that the temperature loss in the heating chamber can be effectively avoided, and a good thermal insulation effect is achieved.

Specifically, the smoke exhaust pipe 5 is bent for a plurality of times, and the bent smoke exhaust pipe 5 is connected with an external smoke purifier through a curing oven; when in actual use, as the heat generated by the burner is higher, the residual heat possibly exists in the residual smoke in the smoke exhaust pipeline 5, so that the residual smoke can be bent in the furnace for a plurality of times, the heat in the smoke exhaust pipeline 5 can be reused, the heat energy efficiency in the furnace is improved, and the quality and the speed of the workpiece during solidification are ensured.

Specifically, the top of the heating tank 7 is provided with an air return port 8, the air return port 8 is communicated with an external curing oven, and the air return port 8 is used for recycling heat in the curing oven; when the cooling device is used, under the attractive force of the centrifugal fan 71, heat in the curing oven enters the air channel of the centrifugal fan 71 again through the air return opening 8, so that hot air circulation is completed, and the temperature in the curing oven is kept uniform.

In this embodiment, a movable access door 74 is provided on the side wall of the heating tank 7, so that an operator can repair and overhaul the heating tank 7, and also can clean and maintain equipment and pipelines in the indirect heating chamber, and the maintenance equipment can normally operate.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims (10)

1. An indirect heating indoor liner comprises a heat supply piece (1), a first liner (2) and a second liner (3) matched with the first liner (2); the method is characterized in that: the device also comprises a heat conduction pipe (4) and a smoke exhaust pipeline (5); a first heating cavity (21) is formed in the first inner container (2), a second heating cavity (31) is formed in the second inner container (3), one end of the heat conduction pipe (4) is communicated with the first heating cavity (21), and the other end of the heat conduction pipe (4) is communicated with the second heating cavity (31); the heat supply piece (1) is used for providing heat for the first heating cavity (21), and then the heat in the first heating cavity (21) enters the second heating cavity (31) through the heat conduction pipe (4); one end of the smoke exhaust pipeline (5) is communicated with the second heating cavity (31), and the other end of the smoke exhaust pipeline (5) is connected with an external smoke purifier.

2. The indirectly heated chamber liner of claim 1, wherein: the heat supply piece (1) is a burner, the burner is provided with a burner inner container (11), the first inner container (2) is arranged at the free end of the burner inner container (11), the burner inner container (11) is provided with a flame nozzle (12), the flame nozzle (12) is communicated with the first heating cavity (21), and the burner inner container (11) and the first inner container (2) are arranged in a crossing mode.

3. The indirectly heated chamber liner of claim 1, wherein: the heat conduction pipe (4) is arranged in a crossing way with the first inner container (2), and the heat conduction pipe (4) is arranged in a crossing way with the second inner container (3).

4. The indirectly heated chamber liner of claim 1, wherein: the heat conduction pipes (4) are provided with a plurality of, and a plurality of heat conduction pipes (4) are located between first inner bag (2) and second inner bag (3), and the one end of a plurality of heat conduction pipes (4) switches on first heating chamber (21), and the other end of a plurality of heat conduction pipes (4) switches on second heating chamber (31).

5. The indirectly heated chamber liner of claim 1, wherein: the indirect heating chamber liner further comprises a flame baffle (6), the flame baffle (6) is located between the second liner (3) and the heat conducting pipe (4), the flame baffle (6) is provided with a plurality of air holes (61) which are arranged in a displaying mode, and heat in the heat conducting pipe (4) is transferred to the second heating cavity (31) through the plurality of air holes (61) which are arranged in an array mode.

6. The indirectly heated chamber liner of claim 5, wherein: the side wall of the flame baffle (6) is provided with a guide sliding block (62), the inner wall of the second inner container (3) is provided with a guide sliding groove (32), and the flame baffle (6) is arranged in the second inner container (3) in a sliding manner through the cooperation of the guide sliding block (62) and the guide sliding groove (32).

7. The indirectly heated chamber liner of claim 2, wherein: the combustor liner (11), the first liner (2), the second liner (3), the heat conduction pipe (4) and the smoke exhaust pipeline (5) are all provided with stainless steel outer walls, and the thickness of the stainless steel outer walls is between 2.5mm and 4.5 mm.

8. The indirectly heated chamber liner of claim 1, wherein: the indirect heating inner container is provided with a heating groove (7) matched with the indirect heating inner container, and the indirect heating inner container is arranged in the heating groove (7); a centrifugal fan (71) is arranged on the heating groove (7), the centrifugal fan (71) is provided with an air inlet and an air outlet, the air inlet is communicated with the heating groove (7), and the air outlet is communicated with the curing oven; the centrifugal fan (71) is used for extracting hot air generated by the indirect heating chamber liner into the external curing furnace to provide heat for the external curing furnace.

9. The indirectly heated chamber liner of claim 8, wherein: the outer wall of the heating groove (7) is provided with a rock wool heat insulation board (72), and the thickness of the rock wool heat insulation board (72) is 120-180 mm.

10. The indirectly heated chamber liner of claim 8, wherein: the top of the heating groove (7) is provided with an air return opening (8), the air return opening (8) is mutually communicated with an external curing oven, and the air return opening (8) is used for recycling heat in the curing oven.