Drying furnace capable of recycling waste heat of waste gas

Abstract

The utility model discloses a drying oven capable of recovering waste heat of waste gas, which comprises a drying oven, an air blower, two first connecting shells, two second connecting shells and two third connecting shells, a shell is arranged on the drying oven, a first communicating pipe is fixedly connected to the shell, and a second communicating pipe is fixedly connected to the shell. The end, away from the shell, of the first communicating pipe is fixedly connected with a filter cartridge, the right surface of the filter cartridge is fixedly connected with a second communicating pipe, the end, away from the filter cartridge, of the second communicating pipe is fixedly connected with the input end of an air blower, and the output end of the air blower is fixedly connected with a connecting pipe. The inner surfaces of the two first connecting shells are fixedly connected with first heat preservation cotton. And through the arrangement of structures such as first heat preservation cotton, second heat preservation cotton and third heat preservation cotton, the heat preservation and protection effects on the first communicating pipe and the second communicating pipe can be achieved, so that heat can be prevented from being conducted to the external environment through the pipeline wall, the situation of heat loss is avoided, and the utilization rate of thermal resources is improved.

Description

Technical Field

[0001] This utility model relates to the field of drying ovens, and in particular to a drying oven that can recover waste heat from exhaust gas. Background Technology

[0002] A drying oven is a device used to dry various objects. It has a wide range of applications in industrial production and daily life. In the production and processing of aluminum cans, drying ovens are often used to dry the cans. For example, after the coating treatment on the surface of the aluminum can, it is necessary to use a drying oven to remove moisture and cure the coating. Its principle is mainly to evaporate the moisture in the object by heating air or other heat medium, thereby achieving the purpose of drying.

[0003] A search revealed that application number 202321422056.7 describes a drying oven with heat recovery, which can recover and reuse the high-temperature waste gas generated during drying, thus avoiding heat waste. When high-temperature waste gas is generated during drying, the induced draft fan can quickly discharge the high-temperature waste gas into the second connecting pipe, and then into the filter cartridge for filtration. Then, it re-enters the drying oven body through the first connecting pipe and under the action of the blower for heat reuse.

[0004] In this scheme, hot air is transported through multiple pipes. However, since the pipes themselves have a certain thermal conductivity, when the hot air flows in the pipes, the heat will be conducted to the external environment through the pipe walls, resulting in the loss of some heat and the waste of thermal resources. Therefore, a drying furnace that can recover waste heat from exhaust gas is needed. Utility Model Content

[0005] The purpose of this invention is to provide a drying oven that can recover waste heat from exhaust gas, thereby preventing heat from being conducted to the external environment through the pipe walls, avoiding heat loss, and improving the utilization of thermal resources.

[0006] To achieve the above objectives, a drying oven capable of recovering waste heat from exhaust gas is provided, comprising a drying oven, a blower, two first connecting shells, two second connecting shells, and two third connecting shells. The drying oven has a shell on which a first connecting pipe is fixedly connected. A filter cylinder is fixedly connected to the end of the first connecting pipe away from the shell. A second connecting pipe is fixedly connected to the right surface of the filter cylinder. The end of the second connecting pipe away from the filter cylinder is fixedly connected to the input end of the blower. A connecting pipe is fixedly connected to the output end of the blower. First insulation cotton is fixedly connected to the inner surfaces of both first connecting shells. Second insulation cotton is fixedly connected to the inner surfaces of both second connecting shells. Third insulation cotton is fixedly connected to the inner surfaces of both third connecting shells. Multiple threaded rods are fixedly connected to each of the two first connecting shells, the two second connecting shells, and the two third connecting shells. Nuts are threaded onto the outer surfaces of the threaded rods. A common connecting plate is movably connected to two corresponding threaded rods.

[0007] According to the aforementioned drying oven capable of recovering waste heat from exhaust gas, the end of the connecting pipe furthest from the blower is fixedly connected to the drying oven.

[0008] According to the aforementioned drying oven capable of recovering waste heat from exhaust gas, the filter cylinder is provided with an end cap, and a filter screen is provided inside the filter cylinder.

[0009] According to the aforementioned drying oven capable of recovering waste heat from exhaust gas, a positioning hole is provided on the connecting plate, and the outer surface of the threaded rod is movably connected to the positioning hole.

[0010] According to the aforementioned drying oven capable of recovering waste heat from exhaust gas, a first base is fixedly connected to the drying oven, and the upper surface of the first base is fixedly connected to a blower.

[0011] According to the aforementioned drying oven capable of recovering waste heat from exhaust gas, a second base is fixedly connected to the drying oven, and the side surface of the second base is fixedly connected to the filter cylinder.

[0012] According to the aforementioned drying furnace for recovering waste heat from exhaust gas, the side surfaces of both first insulation cottons are in contact with the outer surface of the first connecting pipe, and the side surfaces of both second insulation cottons are in contact with the first connecting pipe.

[0013] According to the aforementioned drying furnace capable of recovering waste heat from exhaust gas, the side surfaces of both third insulation cottons are in contact with the second connecting pipe, and an induced draft fan is installed inside the shell.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] By incorporating the first, second, and third insulation materials, the first and second connecting pipes can be insulated and protected, thus preventing heat from being conducted to the external environment through the pipe walls, avoiding heat loss, and improving the utilization of thermal resources.

[0016] The use of threaded rods, nuts, and connecting plates facilitates the assembly and disassembly of the two first connecting shells, the two second connecting shells, and the two third connecting shells, thereby enabling regular maintenance of the first and second connecting pipes and increasing the overall practicality of the structure.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall structure of a drying furnace capable of recovering waste heat from exhaust gas according to this utility model.

[0020] Figure 2 This is a schematic diagram of the filter cylinder portion of a drying oven capable of recovering waste heat from exhaust gas according to this utility model.

[0021] Figure 3 This is a schematic diagram of the first connecting shell part of a drying furnace capable of recovering waste heat from exhaust gas according to this utility model.

[0022] Figure 4 This is a structural schematic diagram of the first connecting shell section of a drying furnace capable of recovering waste heat from exhaust gas according to this utility model.

[0023] Legend:

[0024] 1. Drying oven; 2. Blower; 3. Shell; 4. First connecting pipe; 5. Filter cylinder; 6. Second connecting pipe; 7. Connecting pipe; 8. First connecting shell; 9. Second connecting shell; 10. Third connecting shell; 11. First insulation cotton; 12. Second insulation cotton; 13. Third insulation cotton; 14. Threaded rod; 15. Nut; 16. Connecting plate; 17. Positioning hole; 18. First base; 19. Second base; 20. End cap. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4This utility model discloses a drying oven capable of recovering waste heat from exhaust gas, comprising a drying oven 1, a blower 2, two first connecting shells 8, two second connecting shells 9, and two third connecting shells 10. The drying oven 1 is provided with a shell 3, and a first connecting pipe 4 is fixedly connected to the shell 3. A filter cylinder 5 is fixedly connected to the end of the first connecting pipe 4 away from the shell 3. A second connecting pipe 6 is fixedly connected to the right surface of the filter cylinder 5. The end of the second connecting pipe 6 away from the filter cylinder 5 is fixedly connected to the input end of the blower 2. A connecting pipe 7 is fixedly connected to the output end of the blower 2. The end of the connecting pipe 7 away from the blower 2 is fixedly connected to the drying oven 1. An end cap 20 is provided on the filter cylinder 5. Equipped with a filter screen, this design involves starting the blower 2 and the induced draft fan. The induced draft fan rapidly transports the thermal exhaust gas generated by the drying oven 1 to the first connecting pipe 4, and then through the first connecting pipe 4 into the filter cylinder 5. Upon startup, the input end of the blower 2 drives the second connecting pipe 6, generating suction that draws the exhaust gas from the filter cylinder 5 into the second connecting pipe 6. The filter screen in the filter cylinder 5 filters the gas entering the second connecting pipe 6, removing impurities before it enters the second connecting pipe 6 and the blower 2. Once the filtered gas enters the blower 2, it is re-transported to the drying oven 1 through the connecting pipe 7 at the output end of the blower 2. Inside the dry furnace 1, the waste heat of the exhaust gas is recovered and utilized. The specific recovery and utilization principle in this scheme is based on existing mature technology. For the specific working scheme, specific structure, and specific connection method, please refer to the patent document with application number 202321422056.7. The inner surfaces of the two first connecting shells 8 are fixedly connected with first insulation cotton 11, the inner surfaces of the two second connecting shells 9 are fixedly connected with second insulation cotton 12, and the inner surfaces of the two third connecting shells 10 are fixedly connected with third insulation cotton 13. Multiple threaded rods 14 are fixedly connected to the two first connecting shells 8, the two second connecting shells 9, and the two third connecting shells 10. Nuts 15 are threadedly connected to the outer surface of the threaded rods 14. The two corresponding threaded rods 14 are movably connected to the same connecting plate 16. The connecting plate 16 has a positioning hole 17. The outer surface of the threaded rod 14 is movably connected to the positioning hole 17. The first base 18 is fixedly connected to the drying oven 1. The upper surface of the first base 18 is fixedly connected to the blower 2. The second base 19 is fixedly connected to the drying oven 1. The side surface of the second base 19 is fixedly connected to the filter cylinder 5. The side surfaces of the two first insulation cottons 11 are in contact with the outer surface of the first connecting pipe 4. The side surfaces of the two second insulation cottons 12 are in contact with the first connecting pipe 4. The side surfaces of the two third insulation cottons 13 are in contact with the second connecting pipe 6. An induced draft fan is installed inside the shell 3.

[0027] Working principle: Because the first insulation cotton 11, the second insulation cotton 12, and the third insulation cotton 13 have low thermal conductivity, they can prevent hot air from being conducted to the external environment through the pipe walls during the transport process of the first connecting pipe 4 and the second connecting pipe 6, thus preventing heat dissipation. By rotating the nut 15 and unscrewing it from the threaded rod 14, the fixing of the connecting plate 16 can be released. At this time, the connecting plate 16 can be removed from the threaded rod 14. After the connecting plate 16 is removed, the fixing between the two first connecting shells 8, the two second connecting shells 9, and the two third connecting shells 10 is released, thereby separating the two first connecting shells 8, the two second connecting shells 9, and the two third connecting shells 10 from each other and releasing the fixing of the first connecting pipe 4. The protection between the first connecting pipe 4 and the second connecting pipe 6 enables maintenance work on the first connecting pipe 4 and the second connecting pipe 6. After the maintenance of the first connecting pipe 4 and the second connecting pipe 6 is completed, the two first connecting shells 8, the two second connecting shells 9, and the two third connecting shells 10 are placed back on the first connecting pipe 4 and the second connecting pipe 6, and the first insulation cotton 11, the second insulation cotton 12, and the third insulation cotton 13 are respectively in contact with the first connecting pipe 4 and the second connecting pipe 6. At this time, the connecting plate 16 is inserted into the corresponding two threaded rods 14 through the positioning hole 17 on the connecting plate 16, and then the nut 15 is screwed back onto the threaded rod 14 and tightened, thereby achieving the fixation between the two first connecting shells 8, the two second connecting shells 9, and the two third connecting shells 10, completing the protection of the first connecting pipe 4 and the second connecting pipe 6.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A drying furnace capable of recovering waste gas heat, comprising: The utility model relates to a drying furnace (1), air blower (2), two first connecting shell (8), two second connecting shell (9) and two third connecting shell (10), be provided with the shell (3) on the drying furnace (1), the first communicating pipe (4) is fixedly connected on the shell (3), the filter cartridge (5) is fixedly connected to the first communicating pipe (4) away from the shell (3) one end, the right surface fixedly connected with second communicating pipe (6) of filter cartridge (5), the second communicating pipe (6) away from filter cartridge (5) one end and the input of air blower (2) fixedly connected, the output of air blower (2) is fixedly connected with connecting pipe (7), its characterized in that, the inner surface of two first connecting shell (8) is fixedly connected with first heat preservation cotton (11), the inner surface of two second connecting shell (9) is fixedly connected with second heat preservation cotton (12), the inner surface of two third connecting shell (10) is fixedly connected with third heat preservation cotton (13), two first connecting shell (8), two second connecting shell (9) and two third connecting shell (10) are fixedly connected with a plurality of threaded rods (14) on, the outer surface of threaded rod (14) is threadedly connected with nut (15), and the same connecting plate (16) is movably connected on the corresponding two threaded rods (14).

2. A drying furnace capable of recovering waste heat according to claim 1, wherein The end of connecting pipe (7) away from air blower (2) is fixedly connected with drying furnace (1).

3. The drying furnace of claim 1, wherein, The filter cartridge (5) is provided with an end cover (20), and the inside of the filter cartridge (5) is provided with a filter screen.

4. The drying furnace of claim 1, wherein, The connecting plate (16) is provided with a positioning hole (17), and the outer surface of the threaded rod (14) is movably connected with the positioning hole (17).

5. A drying furnace capable of recovering waste heat according to claim 1, wherein The first base (18) is fixedly connected to the drying furnace (1), and the upper surface of the first base (18) is fixedly connected with the air blower (2).

6. A drying furnace capable of recovering waste heat according to claim 1, wherein The second base (19) is fixedly connected to the drying furnace (1), and the side surface of the second base (19) is fixedly connected with the filter cartridge (5).

7. The waste heat recycling drying furnace according to claim 1, characterized in that, The side surfaces of the two first heat preservation cottons (11) are in contact with the outer surface of the first communicating pipe (4), and the side surfaces of the two second heat preservation cottons (12) are in contact with the first communicating pipe (4).

8. The drying furnace of claim 1, wherein, The side surfaces of the two third heat preservation cottons (13) are in contact with the second communicating pipe (6), and the inside of the shell (3) is provided with an induced draft fan.

Images