CN212512157U - Drying channel for drying furnace pit - Google Patents

Abstract

The utility model relates to a drying channel for a drying furnace pit, which relates to the technical field of the drying furnace pit and comprises a channel body, wherein a clapboard extending along the length direction of the channel body is arranged in the channel body, the clapboard divides the channel body into a drying chamber and a hot air chamber, the drying chamber is provided with an opening, two ends of the hot air chamber are sealed, the side edge of the drying chamber is provided with blast chambers, each blast chamber is arranged along the length direction of the drying chamber, one end of each blast chamber is communicated with the hot air chamber, and each blast chamber is provided with a first exhaust port communicated with the inside of the drying chamber; this application has the stoving effect that improves the work piece.

Description

Drying channel for drying furnace pit

Technical Field

The application relates to the technical field of drying furnaces and cellars, in particular to a drying channel for a drying furnace and a cellars.

Background

In woodwork processing, metal product processing and leather goods processing, it is a very important procedure to dry, and the work piece can be infected with more moisture when preliminary treatment, especially woodwork and leather goods, and the moisture content is on the high side, if not fully dry, then lead to woodwork or leather goods to wet the mould very easily, for the drying efficiency who improves all kinds of work pieces, each equipment provider has developed the drying furnace cellar for storing things.

Referring to fig. 1, the drying kiln comprises a drying channel and a heat supply device, two end openings of the drying channel are arranged, the two end openings of the drying channel are respectively arranged as a feeding port and a discharging port, workpieces are conveyed by a hanging conveyor, a belt conveyor or a trolley, the heat supply device is used for generating hot air, and an air outlet of the heat supply device is communicated with the drying channel, so that the hot air generated by combustion of the heat supply device can be conveyed into the drying channel, and finally, the effect of drying the workpieces conveyed in the drying channel is achieved.

In view of the above-mentioned related technologies, the applicant has found that when hot air generated by the heat supply device is directly fed into the drying channel, the hot air is rapidly dispersed, so that the temperature of each position in the drying channel is low, and the drying effect of the workpiece is affected, and therefore needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve the stoving effect of work piece, this application provides a stoving passageway for drying furnace cellar for storing things.

The application provides a stoving passageway for drying furnace cellar for storing things adopts following technical scheme:

the utility model provides a stoving passageway for drying furnace cellar for storing things, includes the passageway body, this internal baffle that extends along passageway body length direction that is provided with of passageway, the baffle separates the passageway body for drying chamber and hot-blast room, the drying chamber opening sets up, the hot-blast room both ends seal sets up, the side of drying chamber is provided with the blast chamber, each the blast chamber is arranged along drying chamber length direction, and each wherein one end of blast chamber all communicates with hot-blast room, all be provided with the first exhaust opening with the inside intercommunication of drying chamber on each the blast chamber.

Through adopting above-mentioned technical scheme, utilize the baffle to separate the passageway body for hot-blast room and drying chamber, because it is not direct intercommunication with the drying chamber in the hot-blast room, consequently, when the hot-blast re-transport that heating device produced entered hot-blast indoor, hot-blast can not direct loss, at this moment, hot-blast can be discharged through the first exhaust opening of each way blast chamber, thereby make hot-blast can concentrate on the several appointed position of stoving passageway, at this moment, near the temperature of blast chamber is higher, effectively ensure the stoving effect to the work piece, and simultaneously, still can be in the loss to the position that is not provided with the blast chamber after the hot-blast temperature of diffusion from the blast chamber is lower, thereby ensure the comprehensive drying to the work piece.

Preferably, each first exhaust port is provided with a first suction fan, and an air outlet of each first suction fan is communicated with the drying chamber.

Through adopting above-mentioned technical scheme, utilize first extraction fan can take out hot-blast in the hot-blast room fast to accelerate the air flow in the drying chamber, effectively improve the stoving effect to the work piece.

Preferably, each of the blowing chambers is arranged in pairs as a group, and the two blowing chambers in the same group are respectively arranged on two opposite sides of the drying chamber.

Through adopting above-mentioned technical scheme for all be provided with the blast chamber on the two offsides of drying chamber, utilize and set up each blast chamber on the two offsides of drying chamber and can blow to the both sides of work piece, further improve the stoving effect to the work piece.

Preferably, the first suction fans of two said blast chambers of the same group are arranged offset from each other along the length direction of the blast chambers.

Through adopting above-mentioned technical scheme, because the first extraction fan of each on the twice blast chamber that the symmetry set up staggers, consequently can avoid setting up respectively each extraction fan on the twice blast chamber that the symmetry set up to blow, further improve the stoving effect, can reduce the quantity of first extraction fan simultaneously, reach the effect of saving the cost.

Preferably, the two blowing chambers of the same group are arranged in a staggered manner along the length direction of the drying chamber.

Through adopting above-mentioned technical scheme for set up each first extraction fan on the two offsides of drying chamber and can stagger mutually, thereby avoid setting up the first extraction fan of volume on the two offsides of drying chamber respectively and blowing, further improve the stoving effect, can reduce the quantity of first extraction fan simultaneously, reach the effect of saving the cost.

Preferably, the partition plate is further provided with a plurality of second air outlets, the second air outlets are arranged along the length direction of the partition plate, and each second air outlet is used for communicating the hot air chamber and the drying chamber.

Through adopting above-mentioned technical scheme, utilize the second air exit for hot-blast indoor hot-blast also can directly blow to the work piece, thereby reach and blow to the third side of work piece, further improve the stoving effect to the work piece.

Preferably, each second air outlet is provided with a second exhaust fan, and an air outlet of each second exhaust fan is communicated with the drying chamber.

Through adopting above-mentioned technical scheme, utilize the second extraction fan can make the hot-blast work piece that blows through more fast of following the indoor exhaust of hot-blast, further improve the stoving effect to the work piece.

Preferably, a plurality of auxiliary channels are arranged on the outer side of the channel body, one end of each auxiliary channel is communicated with an air outlet of the heat supply device, a plurality of third air outlets are arranged on one side, away from the hot air chamber, of the drying chamber, each third air outlet is respectively communicated with one end, away from the heat supply device, of each auxiliary channel, and each third air outlet is arranged along the length direction of the drying chamber.

Through adopting above-mentioned technical scheme, utilize the cooperation between auxiliary channel and the third air exit for the fourth side of work piece can be bloied to hot-blast that heating device produced, further improves the stoving effect to the work piece.

Preferably, the bottom surface of the bottom of the channel body is provided with a plurality of communicating grooves, each communicating groove is covered with a cover plate, and the auxiliary channel is formed by enclosing the communicating grooves and the cover plates.

Through adopting above-mentioned technical scheme, utilize the cooperation between intercommunication groove and the apron to enclose to close and form and set up in subaerial auxiliary passage for auxiliary passage is convenient for the shaping, and reduces auxiliary passage's the cost that sets up.

Preferably, the side of the drying chamber is provided with a plurality of mounting plates, the left side and the right side of each mounting plate are provided with side plates connected with the side of the drying chamber, and the blast chamber is formed by enclosing the mounting plates and the side plates.

Through adopting above-mentioned technical scheme, utilize the cooperation between mounting panel, curb plate and the blast chamber lateral wall to enclose and close and form the blast chamber, simple structure, the implementation of being convenient for.

In summary, the present application includes at least one of the following beneficial technical effects:

hot air generated by the heating device can be blown out in a centralized manner at a specified position, so that the temperature of a local position in the drying chamber is higher, and the drying effect on the workpiece is effectively ensured;

the air flow in the drying chamber can be relatively large, so that the drying effect on the workpiece is further improved;

the air blowing device can blow air to four side edges of a workpiece, so that the workpiece can be fully heated, and the drying effect on the workpiece is further improved;

the structure is simple, the cost is low, and the blast chamber can be produced in a modularized way, so that the production, the transportation and the assembly are convenient.

Drawings

FIG. 1 is a top view of a related art drying oven pit;

FIG. 2 is a top view of a drying oven according to an embodiment of the present application;

FIG. 3 is a schematic top plan view of a drying tunnel according to an embodiment of the present invention;

FIG. 4 is a schematic front plan view of a drying tunnel according to an embodiment of the present invention;

FIG. 5 is an enlarged view of part A of FIG. 3;

FIG. 6 is a schematic top plan view of a heating apparatus according to an embodiment of the present application;

FIG. 7 is a schematic front plan view of a heating apparatus according to an embodiment of the present application;

FIG. 8 is a schematic view illustrating a heating apparatus and a drying tunnel according to an embodiment of the present invention;

FIG. 9 is a schematic front plan view of a second drying tunnel according to an embodiment of the present invention;

FIG. 10 is a schematic top plan view of a third drying tunnel according to an embodiment of the present invention;

FIG. 11 is a schematic front plan view of a fourth drying tunnel according to an embodiment of the present application;

FIG. 12 is a schematic front plan view of a fifth drying tunnel according to an embodiment of the present invention;

fig. 13 is a schematic top plan view of a six drying tunnel according to an embodiment of the present application.

Reference numerals: 1. a drying channel; 11. a channel body; 12. a blast chamber; 121. mounting a plate; 122. a side plate; 123. a first exhaust port; 13. a first suction fan; 14. a partition plate; 141. a second air outlet; 15. a hot air chamber; 16. a drying chamber; 17. a second suction fan; 18. an auxiliary channel; 181. a communicating groove; 182. a third air outlet; 183. a cover plate; 19. a third suction fan; 2. a heating device; 21. a main combustion chamber; 211. a main heat exchange chamber; 212. a bio-particle combustion device; 213. a feeding device; 214. a frame; 215. a hopper; 216. a screw feeder; 22. an air return chamber; 221. a secondary heat exchange chamber; 222. a heat exchange pipe; 223. a first exhaust fan; 23. tail gas treatment equipment; 231. a second exhaust fan.

Detailed Description

The present application is described in further detail below with reference to figures 1-13.

Example 1:

the embodiment of the application discloses a drying furnace cellar. Referring to fig. 2, the drying kiln comprises a drying channel 1 and a heat supply device 2, wherein openings are formed in two ends of the drying channel 1, a workpiece can move in the drying channel 1, an air outlet of the heat supply device 2 is communicated with the drying channel 1, and hot air can be supplied to the drying channel 1 by the heat supply device 2.

Referring to fig. 3 and 4, the drying tunnel 1 includes a tunnel body 11, a blast chamber 12, and a first suction fan 13; the channel body 11 is used for covering a workpiece, and simultaneously preventing hot air conveyed by the heat supply device 2 from directly escaping, the blowing chamber 12 is provided with a plurality of blowing chambers 12, the blowing chambers 12 are uniformly distributed on the left side and the right side of the channel body 11, each blowing chamber 12 is communicated with the air outlet of the heat supply device 2 and used for concentrating the hot air at the position where the blowing chamber 12 is arranged on the channel body 11, the first suction fan 13 is provided with a plurality of suction fans, the first suction fans 13 are uniformly distributed on the blowing chambers 12, and the first suction fans 13 are used for extracting the hot air in the blowing chamber 12 and blowing the hot air into the channel body 11.

Referring to fig. 3 and 4, a partition 14 is disposed in the duct body 11, the partition 14 extends along the length direction of the duct body 11, the duct body 11 is divided into a hot air chamber 15 and a drying chamber 16 by the partition 14, and the hot air chamber 15 and the drying chamber 16 are disposed in an up-down position; wherein, the two ends of the hot air chamber 15 are closed, and the hot air chamber 15 is communicated with the air outlet of the heating device 2, the hot air chamber 15 is also respectively communicated with each blast chamber 12, and the air outlet of the first suction fan 13 is communicated with the drying chamber 16.

Referring to fig. 4 and 5, the blowing chamber 12 includes a mounting plate 121 and a side plate 122, the mounting plate 121 is provided with one piece, the mounting plate 121 is parallel to the side surface of the drying chamber 16, the side plate 122 is provided with two pieces, the two pieces of side plate 122 are respectively provided on the left and right sides of the mounting plate 121, one side of the two pieces of side plate 122 away from the mounting plate 121 is connected to the side wall of the drying chamber 16, the blowing chamber 12 is formed by enclosing the mounting plate 121, the side plate 122 and the side wall of the drying chamber 16, and the upper end of the blowing chamber 12 is communicated with.

The blowing chamber 12 is disposed in the hot air chamber 15, the upper end of the blowing chamber 12 is connected to the lower surface of the partition 14, a plurality of first exhaust ports 123 are disposed on the mounting plate 121, and the first suction fans 13 are disposed on the first exhaust ports 123.

Referring to fig. 6 and 7, the heating apparatus 2 includes a main combustion chamber 21 and an air return chamber 22, and the main combustion chamber 21 and the air return chamber 22 are both disposed on a side surface of the drying chamber 16 such that the main combustion chamber 21 and the air return chamber 22 can directly heat air in the drying chamber 16; wherein, the air inlet of the main combustion chamber 21 is communicated with one end of the air return chamber 22, the air outlet of the main combustion chamber 21 is communicated with the heating chamber, and the end of the air return chamber 22 far away from the main combustion chamber 21 is communicated with the drying chamber 16.

Referring to fig. 7 and 8, the main combustion chamber 21 comprises a main heat exchange chamber 211, a biological particle combustion device 212 and a feeding device 213, the biological particle combustion device 212 is arranged in the main heat exchange chamber 211, a feed port of the biological particle combustion device 212 extends out of the main heat exchange chamber 211 and is connected with the feeding device 213, an air outlet of the biological particle combustion device 212 extends out of the main heat exchange chamber 211 and is connected with the main heat exchange chamber 211 in a sealing way, and the air return chamber 22 is communicated with the main heat exchange chamber 211; when the biological particle combustion device is used, the air flow which is cooled in the drying chamber 16 is pumped into the main heat exchange chamber 211 again by using the air return chamber 22, at the moment, the part of the air flow can exchange heat with the biological particle combustion device 212, so that the temperature of the air flow is increased, the air flow can be continuously conveyed into the hot air chamber 15 for use after the temperature of the air flow is increased, and meanwhile, a certain cooling effect can be achieved on the biological particle combustion device 212.

Referring to fig. 8, the air return chamber 22 comprises an auxiliary heat exchange chamber 221 and a heat exchange pipe 222, the heat exchange pipe 222 is provided as a coil, a plurality of heat exchange pipes 222 are provided, the heat exchange pipe 222 is provided in the auxiliary heat exchange chamber 221, one end of the heat exchange pipe 222 is communicated with the air outlet of the biological particle combustion device 212, and the other end of the heat exchange pipe 222 extends out of one end of the auxiliary heat exchange chamber 221 away from the main combustion chamber 21; wherein, one end of the auxiliary heat exchange chamber 221 is communicated with the main heat exchange chamber 211, the other end of the auxiliary heat exchange chamber 221 is communicated with the drying chamber 16, a first exhaust fan 223 is arranged at the position where the auxiliary heat exchange chamber 221 is communicated with the drying chamber 16, and the air inlet of the first exhaust fan 223 is communicated with the hot air chamber 15. During the use, utilize first exhaust fan 223 with the air current in the drying chamber 16 in the air return chamber 22 of drawing, at this moment, the produced flue gas of biological particle burner 212 can be discharged through heat exchange tube 222 to make the air current in the vice heat exchange chamber 221 can carry out the heat transfer with heat exchange tube 222, the air current that preliminary heat transfer was accomplished can get into and carries out the secondary heat transfer in the heat exchange chamber, thereby effectively ensure the make full use of the produced heat of biological particle burner 212.

Referring to fig. 8, the heating apparatus 2 further comprises a tail gas treatment device 23, the tail gas treatment device 23 is disposed at an end of the air return chamber 22 away from the main combustion chamber 21, and an air inlet of the tail gas treatment device 23 is communicated with an end of the heat exchange pipe 222 away from the biological particle combustion apparatus 212; wherein, each heat exchange tube 222 is provided with a second exhaust fan 231 on one end communicated with the tail gas treatment device 23, and the second exhaust fan 231 can be used for pumping the flue gas generated by the combustion of the biological particle combustion device 212 into the tail gas treatment device 23.

Referring to fig. 7, the feeding device 213 includes a frame 214, a hopper 215, and a screw feeding device 216, the hopper 215 is disposed in the frame 214, an upper end of the hopper 215 is open, a lower end of the hopper 215 is communicated with the feeding port of the bio-particle combustion device 212, and the screw feeding device 216 is disposed at a lower end of the hopper 215 for controlling the feeding amount.

The implementation principle of the embodiment 1 of the application is as follows:

a large amount of heat can be generated by the biological particle combustion device 212, meanwhile, high-temperature flue gas generated by the biological particle combustion device 212 enters the air return chamber 22 and is discharged by the tail gas treatment device 23 finally, at the moment, air in the drying chamber 16 can be pumped into the air return chamber 22 by the air return chamber 22, the air pumped into the air return chamber 22 is in contact with the heat exchange tube 222 for conveying the high-temperature flue gas to exchange heat, so that the effect of primarily heating the air in the air return chamber 22 is achieved, the air in the air return chamber 22 returns into the main heat exchange chamber 211 under the action of air pressure, and the part of air is in contact with the biological particle combustion device 212 to be secondarily heated, so that the effect of generating hot air is achieved.

The hot air generated by the heating device 2 directly enters the hot air chamber 15, then the hot air is divided into the blast chambers 12 through the hot air chamber 15, and finally the hot air is blown into the drying chamber 16 through the first suction fans 13 to heat the workpieces conveyed in the drying chamber 16.

Wherein, the work piece in the drying chamber 16 can produce steam when drying, and steam and the air mixture in the drying chamber 16 form the hot-blast of high temperature and high humidity, through the primary heating of return air chamber 22, through the secondary heating of main combustion chamber 21 again, because radiation temperature is very high in the main combustion chamber 21, can gasify the hot-blast steam of high temperature and high humidity in the twinkling of an eye to produce clean hot-blast, reentrant drying chamber 16 in, consequently and the circulation.

Example 2:

referring to fig. 9, the present embodiment is different from embodiment 1 in that the blowing chambers 12 are arranged in pairs in one group, two blowing chambers 12 in the same group are respectively arranged on two opposite sides of the drying chamber 16, and the first suction fans 13 on the two blowing chambers 12 in the same group are arranged in a staggered manner along the length direction of the blowing chambers 12.

The implementation principle of the embodiment 2 is as follows:

when the hot air in the blast chamber 12 is blown out by the first suction fan 13, because the first suction fans 13 on the two blast chambers 12 which are symmetrically arranged are staggered, the opposite blowing of the suction fans on the two blast chambers 12 which are symmetrically arranged can be avoided, the generation of dust is avoided, the application of hot air potential energy is ensured, the drying effect of the workpiece is effectively ensured, and meanwhile, the installation quantity of the first suction fans 13 can be reduced on the premise of ensuring the comprehensive blowing of the workpiece.

Example 3:

referring to fig. 10, the present embodiment is different from embodiment 1 in that the blowing chambers 12 are arranged in pairs in one group, two blowing chambers 12 in the same group are respectively arranged on two opposite sides of the drying chamber 16, and two blowing chambers 12 in the same group are arranged in a staggered manner along the length direction of the drying chamber 16.

The implementation principle of the embodiment 3 is as follows:

when the hot air in the blowing chamber 12 is blown out by the first suction fan 13, because the blowing chambers 12 arranged on the drying chamber 16 are staggered, the opposite blowing of the suction fans respectively arranged on the blowing chambers 12 can be avoided, dust generation is avoided, the application of hot air potential energy is ensured, the drying effect of the workpiece is effectively ensured, and meanwhile, the installation number of the first suction fans 13 can be reduced on the premise of ensuring the comprehensive blowing of the workpiece.

Example 4:

referring to fig. 11, the present embodiment is different from embodiment 1 in that a plurality of second air outlets 141 are further disposed on the partition 14, each second air outlet 141 is arranged along the length direction of the partition 14, each second air outlet 141 is provided with a second suction fan 17, and an air outlet of each second suction fan 17 is communicated with the drying chamber 16.

The implementation principle of the embodiment 4 is as follows:

the hot air in the hot air chamber 15 can be directly blown into the drying chamber 16 by the second suction fan 17 to blow the upper side of the workpiece, so that the workpiece is more easily dried.

Example 5:

referring to fig. 12, the present embodiment is different from embodiment 1 in that a plurality of auxiliary channels 18 are further disposed outside the channel body 11, one end of each auxiliary channel 18 is communicated with the air outlet of the heating device 2, and the other end of each auxiliary channel 18 is communicated with the bottom of the drying chamber 16; one end of the auxiliary channel 18, which is communicated with the drying chamber 16, is provided with a third air outlet 182, each third air outlet 182 is arranged along the length direction of the drying chamber 16, and each third air outlet 182 is provided with a third exhaust fan 19, an air outlet of which is communicated with the inside of the drying chamber 16.

Wherein, a plurality of communicating grooves 181 are provided on the bottom surface of the bottom of the channel body 11, a cover plate 183 is provided on each communicating groove 181, and the auxiliary channel 18 is formed by the surrounding of the communicating grooves 181 and the cover plate 183.

The implementation principle of the embodiment 5 is as follows:

the hot air generated by the heating apparatus 2 can be drawn into the auxiliary passage 18 by the third suction fan 19, and the hot air drawn into the auxiliary passage 18 can be blown into the drying chamber 16, thereby blowing the lower side of the workpiece, so that the workpiece can be dried more easily.

Example 6:

referring to fig. 13, the present embodiment is different from embodiment 1 in that each blast chamber 12 is disposed outside the drying chamber 16, each first exhaust fan 223 is disposed on the sidewall of the drying chamber 16, and the upper end of each blast chamber 12 is disposed to communicate with the side of the hot air chamber 15.

The implementation principle of the embodiment 6 is as follows:

by providing the blast chamber 12 outside the drying chamber 16, the blast chamber 12 can be prevented from occupying too much inner space of the drying chamber 16, so that the drying kiln can accommodate larger workpieces.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A drying channel for a drying kiln, comprising a channel body (11), characterized in that: the improved drying device is characterized in that a partition plate (14) extending along the length direction of the channel body (11) is arranged in the channel body (11), the partition plate (14) divides the channel body (11) into a drying chamber (16) and a hot air chamber (15), the drying chamber (16) is provided with an opening, two ends of the hot air chamber (15) are arranged in a closed mode, a blast chamber (12) is arranged on the side edge of the drying chamber (16), each blast chamber (12) is arranged along the length direction of the drying chamber (16), one end of each blast chamber (12) is communicated with the hot air chamber, and a first exhaust port (123) communicated with the inside of the drying chamber (16) is arranged on each blast chamber (12).

2. A drying tunnel for a drying oven according to claim 1, characterized in that: each first exhaust opening (123) is provided with a first suction fan (13), and an air outlet of each first suction fan (13) is communicated with the drying chamber (16).

3. A drying tunnel for a drying oven according to claim 1, characterized in that: the two blast chambers (12) are arranged in a group, and the two blast chambers (12) in the same group are respectively arranged on two opposite sides of the drying chamber (16).

4. A drying tunnel for a drying oven according to claim 2, characterized in that: the first suction fans (13) on the two blast chambers (12) in the same group are arranged in a mutually staggered mode along the length direction of the blast chambers (12).

5. A drying tunnel for a drying oven according to claim 1, characterized in that: the two blast chambers (12) of the same group are arranged in a mutually staggered manner along the length direction of the drying chamber (16).

6. A drying tunnel for a drying oven according to claim 1, characterized in that: the partition board (14) is further provided with a plurality of second air outlets (141), each second air outlet (141) is arranged along the length direction of the partition board (14), and each second air outlet (141) is used for communicating the hot air chamber (15) and the drying chamber (16).

7. A drying tunnel for a drying oven according to claim 6, characterized in that: and each second air outlet (141) is provided with a second exhaust fan (17), and the air outlet of each second exhaust fan (17) is communicated with the drying chamber (16).

8. A drying tunnel for a drying oven according to claim 1, characterized in that: the outer side of the channel body (11) is provided with a plurality of auxiliary channels (18), one end of each auxiliary channel (18) is communicated with an air outlet of the heat supply device (2), one side of the drying chamber (16), which is far away from the hot air chamber (15), is provided with a plurality of third air outlets (182), each third air outlet (182) is respectively communicated with one end of each auxiliary channel (18), which is far away from the heat supply device (2), and each third air outlet (182) is arranged along the length direction of the drying chamber (16).

9. A drying tunnel for a drying oven according to claim 8, characterized in that: a plurality of communicating grooves (181) are formed in the bottom face of the bottom of the channel body (11), a cover plate (183) is covered on each communicating groove (181), and the auxiliary channel (18) is formed by enclosing the communicating grooves (181) and the cover plate (183).

10. A drying tunnel for a drying oven according to claim 1, characterized in that: the side of the drying chamber (16) is provided with a plurality of mounting plates (121), the left side and the right side of each mounting plate (121) are provided with side plates (122) connected with the side of the drying chamber (16), and the blast chamber (12) is formed by enclosing the mounting plates (121) and the side plates (122).

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