Hot air circulation adjusting device for drying oven

Abstract

The hot air circulation adjusting device for the drying oven comprises a drying oven body and further comprises an air inlet hopper, a control box is fixedly connected to the middle of the left side of the drying oven body, a circulation box is fixedly connected to the top of the drying oven body, and an air exhaust hopper penetrates through the middle of the top end of the inner wall of the drying oven body and is fixedly connected with the middle of the top end of the inner wall of the drying oven body. When a threaded rod rotates, a driving gear can be driven to rotate, a transmission gear can be driven to rotate through rotation of the driving gear, a driven gear can be driven to rotate through rotation of the transmission gear, and a reciprocating lead screw at the bottom can be driven to rotate through rotation of the driven gear; the reciprocating lead screw rotates to drive the sliding block to reciprocate, the sliding block moves to drive the cleaning brush to move up and down, a hole in the left side of the dustproof plate can be cleaned, and the situation that when the brush roller cleans the dustproof plate, dust is discharged to the left side of the hole of the dustproof plate, and consequently the dust enters the air inlet hopper is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of hot air circulation regulating devices, and in particular to a hot air circulation regulating device for an oven. Background Art

[0002] An oven (also called a drying oven, oven or heating oven) is a device used for heating, drying, curing, baking, sterilization and other processes. It generates heat through electric heating, gas heating or other means, and uses a hot air circulation system to evenly transfer heat to the object being processed. Ovens are widely used in industry, scientific research, medical care, food processing and other fields, and can meet the heating and drying needs of different industries. The hot air circulation regulator is a key component in the oven, which is responsible for ensuring that the temperature in the oven is evenly distributed and efficiently transferring heat to the heated object.

[0003] At present, most of the existing ovens directly discharge the hot air inside, and fail to dry and recycle the discharged humid hot air, resulting in heat loss and increasing the use cost of the oven. In addition, when the outside air is sucked in by the fan, the surface of the dustproof plate is easily contaminated with dust, and subsequent use of the dustproof plate is required. The impurities on the surface of the dustproof plate need to be cleaned, and when cleaning the dustproof plate, the rear side of the dustproof plate needs to be protected to prevent dust from entering the air inlet hopper, thereby affecting the use of the oven body.

[0004] Therefore, how to provide a hot air circulation regulating device for an oven is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0005] One object of the present invention is to provide a hot air circulation regulating device for an oven to solve the problems raised in the above background technology.

[0006] A hot air circulation regulating device for an oven according to an embodiment of the present invention comprises an oven main body and an air inlet hopper, a control box is fixedly connected to the middle of the left side of the oven main body, a circulation box is fixedly connected to the top of the oven main body, an exhaust hopper is passed through and fixedly connected to the middle of the top of the inner wall of the oven main body, an exhaust fan is fixedly connected to the bottom of the exhaust hopper, a filter screen is provided at the bottom of the exhaust fan, a runner sleeve is rotatably connected to the top of the exhaust hopper, a heating ring plate is provided on the inner wall of the rotating wheel sleeve, an adsorption ring plate is provided on the inner wall of the heating ring plate, and the middle of the top of the rotating wheel sleeve An exhaust plate is provided, and two fans are fixedly connected to the rear side of the oven main body, a second filter plate is fixedly connected to the fan air outlet, a first connecting sleeve is fixedly connected to the fan air inlet, a second connecting sleeve is fixedly connected to the adjacent side of the first connecting sleeve, a heating plate three is provided on the inner wall of the first connecting sleeve, a heating plate four is provided on the inner wall of the second connecting sleeve, an air inlet scoop is passed through and fixedly connected to the middle of the right side of the second connecting sleeve, protective boxes are fixedly connected to both sides of the top of the air inlet scoop, a dustproof plate is provided on the inner wall of the air inlet scoop, and a cleaning component is fixedly connected to the right side of the air inlet scoop.

[0007] As a preferred solution of the present invention: the cleaning component includes a cleaning sleeve, both sides of the bottom of the cleaning sleeve are fixedly connected to a transmission motor, the output end of the transmission motor is fixedly connected to a threaded rod, the outer wall of the threaded rod is threadedly connected to a movable block, an adjacent side of the movable block is fixedly connected to a fixed sleeve, the front end of the fixed sleeve is fixedly connected to a rotating motor 2, the output end of the rotating motor 2 is fixedly connected to a brush roller, and the top of the threaded rod is fixedly connected to a rotating rod.

[0008] As a further preferred embodiment of the present invention: a driving gear is fixedly connected to the top of the rotating rod, the driving gear is meshingly connected to the transmission gear, the transmission gear is meshingly connected to the driven gear, the bottom of the driven gear is fixedly connected to a reciprocating screw, the outer wall of the reciprocating screw is movably connected to a slider, and a cleaning brush is fixedly connected between the right sides of the slider.

[0009] As a further preferred embodiment of the present invention: a return air pump is fixedly connected to the right side of the top of the oven main body, an exhaust duct is fixedly connected to the input end of the return air pump, and the exhaust duct is fixedly connected to the circulation box, an output end of the return air pump is fixedly connected to the return air duct, and the bottom end of the return air duct is fixedly connected to the oven main body.

[0010] As a further preferred solution of the present invention: a plurality of connecting rods are fixedly connected to the top of the wheel sleeve, and the tops of the connecting rods are fixedly connected to the circulation box.

[0011] As a further preferred solution of the present invention: a rotating motor is fixedly connected to the left side of the inner wall of the circulation box, a rotating shaft is fixedly connected to the output end of the rotating motor, and two limit plates are fixedly connected to the outer wall of the rotating shaft.

[0012] As a further preferred solution of the present invention: a rotating belt is provided between adjacent sides of the limiting plate, the rotating shaft is rotatably connected to the rotating belt, and a rotating wheel sleeve is movably connected to the inner wall of the rotating belt.

[0013] As a further preferred solution of the present invention: a built-in sleeve is fixedly connected to the inner wall of the oven body, the outer wall of the built-in sleeve is penetrated and provided with evenly distributed through holes, and a plurality of placement plates are provided inside the built-in sleeve.

[0014] The beneficial effects of the present invention are:

[0015] 1. The hot air generated when the items inside the oven body are baked is discharged through the exhaust fan, and the humid hot air is discharged into the inside of the rotor sleeve through the exhaust scoop. The rotating motor is started to drive the rotating shaft to rotate, and the rotating belt can be driven to rotate by the rotation of the rotating shaft. The rotating belt can drive the rotor sleeve to rotate, and the humid air transmitted by the exhaust scoop rotates along with the rotation of the rotor sleeve, and the humid air is guided to the surface of the adsorption ring plate on the inner wall of the rotor sleeve. The humid gas in the air is adsorbed by the adsorption ring plate, and the hot air that has adsorbed the humid air is extracted through the exhaust pipe connected to the output end of the return air pump, and then the hot air is discharged into the oven body again through the return air pipe at the output end, which can ensure the recycling of hot air and will not cause heat loss, resulting in excessively high cost of using the oven.

[0016] 2. When the main body of the oven is used for too long, the surface of the dustproof plate will be contaminated with more dust. Start the transmission motor and the rotating motor 2. By starting the rotating motor 2, the brush roller can be driven to rotate. By starting the transmission motor, the threaded rod can be driven to rotate. The rotation of the threaded rod can drive the movable block to move up and down. The movement of the movable block can drive the fixed sleeve to move. The movement of the fixed sleeve can drive the brush roller to move up and down. When the threaded rod rotates, the active gear can be driven to rotate. The rotation of the active gear can drive the transmission gear to rotate. The rotation of the transmission gear can drive the driven gear to rotate. The rotation of the driven gear can drive the reciprocating screw at the bottom to rotate. The rotation of the reciprocating screw can drive the slider to move back and forth. The movement of the slider can drive the cleaning brush to move up and down, and the holes on the left side of the dustproof plate can be cleaned to prevent the brush roller from discharging dust to the left side of the dustproof plate hole when cleaning the dustproof plate, causing dust to enter the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 The present invention is a schematic front view of the overall structure of a hot air circulation regulating device for an oven proposed by the present invention.

[0019] Figure 2 The present invention is a schematic side view of the overall structure of a hot air circulation regulating device for an oven proposed by the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of a circulation box of a hot air circulation regulating device for an oven proposed by the present invention.

[0021] Figure 4 This is a schematic diagram of the disassembled structure of the circulation components of a hot air circulation regulating device for an oven proposed by the present invention.

[0022] Figure 5 A schematic diagram of a cleaning component of a hot air circulation regulating device for an oven proposed by the present invention.

[0023] Figure 6 This is a schematic diagram of the internal structure of a first connecting sleeve of a hot air circulation regulating device for an oven proposed by the present invention.

[0024] Figure 7 The present invention is a schematic diagram of the internal structure of an air inlet hopper of a hot air circulation regulating device for an oven.

[0025] Figure 8 This is a schematic diagram of the internal structure of a cleaning sleeve of a hot air circulation regulating device for an oven proposed by the present invention.

[0026] Fig. 9 This is a schematic diagram of the internal structure of an oven main body of a hot air circulation regulating device for an oven proposed by the present invention.

[0027] Fig.10 This is a schematic diagram of the disassembled structure of a cleaning component of a hot air circulation regulating device for an oven proposed by the present invention.

[0028] Fig.11 A hot air circulation regulating device for an oven proposed by the present invention Fig.10 A is an enlarged schematic diagram.

[0029] Figures indicate: 1. Oven body; 2. Control box; 3. Slider; 4. Protective box; 5. Placement plate; 6. Rotating motor 2; 7. Return air duct; 8. Return air pump; 9. Exhaust duct; 10. Circulation box; 11. Connecting rod; 12. Rotating belt; 13. Transmission gear; 14. Through hole; 15. Built-in sleeve; 16. Exhaust plate; 17. Rotating wheel sleeve; 18. Cleaning brush; 19. Adsorption ring plate; 20. Heating ring plate; 21. Limiting plate; 22. Rotating shaft; 23. Rotating motor machine; 24, exhaust scoop; 25, exhaust fan; 26, filter screen; 27, dust plate; 28, air inlet scoop; 29, first connecting sleeve; 30, fan; 31, filter plate two; 32, heating plate three; 33, brush roller; 34, heating plate four; 35, second connecting sleeve; 36, cleaning sleeve; 37, driven gear; 38, movable block; 39, reciprocating screw; 40, threaded rod; 41, transmission motor; 42, fixed sleeve; 43, driving gear; 44, rotating rod. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0031] refer to Figure 1 , Figure 3 , Figure 4 , Fig. 9As shown, a hot air circulation regulating device for an oven comprises an oven body 1 and an air inlet 28. An inner wall of the oven body 1 is fixedly connected with an inner sleeve 15. The outer wall of the inner sleeve 15 is penetrated and provided with evenly distributed through holes 14. A plurality of placement plates 5 are provided inside the inner sleeve 15. A control box 2 is fixedly connected to the middle of the left side of the oven body 1. A circulation box 10 is fixedly connected to the top of the oven body 1. An exhaust scoop 24 is penetrated and fixedly connected to the middle of the top of the inner wall of the oven body 1. An exhaust fan 25 is fixedly connected to the bottom of the exhaust scoop 24. , a filter screen plate 26 is arranged at the bottom of the exhaust fan 25, a rotating wheel sleeve 17 is rotatably connected to the top of the exhaust scoop 24, a heating ring plate 20 is arranged on the inner wall of the wheel sleeve 17, an adsorption ring plate 19 is arranged on the inner wall of the heating ring plate 20, a plurality of connecting rods 11 are fixedly connected to the top of the wheel sleeve 17, and the tops of the connecting rods 11 are fixedly connected to the circulation box 10, an exhaust plate 16 is arranged at the middle of the top of the wheel sleeve 17, two fans 30 are fixedly connected through the rear side of the oven body 1, a filter plate 2 31 is fixedly connected to the air outlet of the fan 30, and an air inlet of the fan 30 A first connecting sleeve 29 is fixedly connected, a second connecting sleeve 35 is fixedly connected to the adjacent side of the first connecting sleeve 29, a heating plate 32 is arranged on the inner wall of the first connecting sleeve 29, a heating plate 4 34 is arranged on the inner wall of the second connecting sleeve 35, an air inlet 28 is passed through and fixedly connected to the middle of the right side of the second connecting sleeve 35, a protective box 4 is fixedly connected to the top of the air inlet 28 on both sides, a dustproof plate 27 is arranged on the inner wall of the air inlet 28, a return air pump 8 is fixedly connected to the right side of the top of the oven body 1, an exhaust pipe 9 is fixedly connected to the input end of the return air pump 8, and the exhaust pipe 9 is connected to the circulation The ring boxes 10 are fixedly connected, the output end of the return air pump 8 is fixedly connected to the return air duct 7, the bottom end of the return air duct 7 is fixedly connected to the oven body 1, the left side of the inner wall of the circulation box 10 is fixedly connected to a rotating motor 23, the output end of the rotating motor 23 is fixedly connected to a rotating shaft 22, the outer wall of the rotating shaft 22 is fixedly connected to two limit plates 21, a rotating belt 12 is provided between the adjacent sides of the limit plates 21, the rotating shaft 22 is rotatably connected to the rotating belt 12, the inner wall of the rotating belt 12 is movably connected to a runner sleeve 17, and the right side of the air inlet hopper 28 is fixedly connected to a cleaning component;

[0032] The moist air is transmitted to the inner wall of the built-in sleeve 15 through the through hole 14 provided on the outer wall of the built-in sleeve 15 inside the oven body 1, and the articles inside the placing plate 5 are baked. During the baking process, the hot air generated when the articles inside the oven body 1 are baked is discharged through the exhaust fan 25, and the moist hot air is discharged to the inside of the rotary sleeve 17 through the exhaust scoop 24. The rotating shaft 22 is driven to rotate by starting the rotating motor 23, and the rotating belt 12 can be driven to rotate by the rotation of the rotating shaft 22, and the rotary sleeve 17 can be driven to rotate by the rotation of the rotating belt 12, so that the moist air transmitted by the exhaust scoop 24 rotates along with the rotation of the rotary sleeve 17, and the moist air is guided to the surface of the adsorption ring plate 19 on the inner wall of the rotary sleeve 17, and the moist gas in the air is adsorbed by the adsorption ring plate 19, and the hot air that has absorbed the moist air is extracted through the exhaust pipe 9 connected to the output end of the return air pump 8, and then the hot air is discharged into the oven body 1 again through the return air pipe 7 at the output end, so that the recycling of the hot air can be ensured, and heat loss will not be caused, resulting in excessively high use costs of the oven.

[0033] refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.10 , Fig.11 As shown, the cleaning component includes a cleaning sleeve 36, both sides of the bottom of the cleaning sleeve 36 are fixedly connected to a transmission motor 41, the output end of the transmission motor 41 is fixedly connected to a threaded rod 40, the outer wall of the threaded rod 40 is threadedly connected to a movable block 38, an adjacent side of the movable block 38 is fixedly connected to a fixed sleeve 42, the front end of the fixed sleeve 42 is fixedly connected to a rotating motor 26, the output end of the rotating motor 26 is fixedly connected to a brush roller 33, the top of the threaded rod 40 is fixedly connected to a rotating rod 44, the top of the rotating rod 44 is fixedly connected to a driving gear 43, the driving gear 43 is meshedly connected to the transmission gear 13, the transmission gear 13 is meshedly connected to the driven gear 37, the bottom of the driven gear 37 is fixedly connected to a reciprocating screw rod 39, the outer wall of the reciprocating screw rod 39 is movably connected to a slider 3, and a cleaning brush 18 is fixedly connected between the right sides of the slider 3;

[0034] Start the transmission motor 41 and the rotating motor 26. The brush roller 33 can be driven to rotate by starting the rotating motor 26. The threaded rod 40 can be driven to rotate by starting the transmission motor 41. The movable block 38 can be driven to move up and down by the rotation of the threaded rod 40. The fixed sleeve 42 can be driven to move by the movement of the movable block 38. The brush roller 33 can be driven to move up and down by the movement of the fixed sleeve 42. When the threaded rod 40 rotates, the driving gear 43 can be driven to rotate. The driving gear 43 can be driven to rotate. The driven gear 37 can be driven to rotate by the rotation of the driving gear 43. The reciprocating screw rod 39 at the bottom can be driven to rotate by the rotation of the reciprocating screw rod 39. The slider 3 can be driven to reciprocate by the rotation of the reciprocating screw rod 39. The cleaning brush 18 can be driven to move up and down by the movement of the slider 3, so as to clean the holes on the left side of the dustproof plate 27 to prevent the brush roller 33 from discharging dust to the left side of the hole of the dustproof plate 27 when cleaning the dustproof plate 27, thereby causing dust to enter the air inlet 28.

[0035] Working principle:

[0036] When it is necessary to bake the items in the oven body 1, first, by pressing the switch button at the front end of the control box 2, the fans 30 on both sides of the rear wall of the oven body 1 are turned on, and the external air is discharged into the second connecting sleeve 35 through the dustproof plate 27 on the right side of the air inlet hopper 28, and then the filtered air is transmitted to the first connecting sleeve 29 through the second connecting sleeve 35, and then the heated air is transmitted to the oven body 1 through the air outlet of the fan 30, and the air is filtered twice through the filter plate 2 31 on the rear side of the inner wall of the oven body 1, and then the air is transmitted to the inner wall of the built-in sleeve 15 through the through hole 14 opened on the outer wall of the built-in sleeve 15 inside the oven body 1, and the items inside the placement plate 5 are baked. The oven body 1 is baked. During the baking process, the hot air generated when the items inside the oven body 1 are baked is exhausted through the exhaust fan 25, and the moist hot air is exhausted to the inside of the rotary wheel sleeve 17 through the exhaust scoop 24. The rotating motor 23 is started to drive the rotating shaft 22 to rotate, and the rotating belt 12 can be driven to rotate through the rotation of the rotating shaft 22. The rotary wheel sleeve 17 can be driven to rotate through the rotation of the rotating belt 12, and the moist air transmitted by the exhaust scoop 24 rotates along with the rotation of the rotary wheel sleeve 17, and the moist air is guided to the surface of the adsorption ring plate 19 on the inner wall of the rotary wheel sleeve 17. The moist gas in the adsorbed air is extracted and adsorbed through the exhaust pipe 9 connected to the output end of the return air pump 8. The hot air of the humid air is then discharged into the oven body 1 again through the return air duct 7 at the output end, which can ensure the recycling of the hot air and will not cause heat loss, resulting in excessively high cost of the oven. When the oven body 1 is used for too long, the surface of the dustproof plate 27 will be contaminated with more dust. The transmission motor 41 and the rotating motor 26 are started. The brush roller 33 can be driven to rotate by starting the transmission motor 41. The threaded rod 40 can be driven to rotate by the rotation of the threaded rod 40. The movable block 38 can be driven to move up and down by the movement of the movable block 38. The fixed sleeve 42 can be driven to move by the movement of the fixed sleeve 42. The brush roller 33 moves up and down, and when the threaded rod 40 rotates, the driving gear 43 can be driven to rotate. The rotation of the driving gear 43 can drive the transmission gear 13 to rotate. The rotation of the transmission gear 13 can drive the driven gear 37 to rotate. The rotation of the driven gear 37 can drive the reciprocating screw rod 39 at the bottom to rotate. The rotation of the reciprocating screw rod 39 can drive the slider 3 to move back and forth. The movement of the slider 3 can drive the cleaning brush 18 to move up and down, and the holes on the left side of the dustproof plate 27 can be cleaned to prevent the brush roller 33 from discharging dust to the left side of the hole of the dustproof plate 27 when cleaning the dustproof plate 27, causing dust to enter the air inlet 28.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hot air circulation regulating device for an oven, comprising an oven body (1), characterized in that: The oven body (1) further comprises an air inlet scoop (28), a control box (2) is fixedly connected to the middle of the left side of the oven body (1), a circulation box (10) is fixedly connected to the top of the oven body (1), an exhaust scoop (24) is passed through and fixedly connected to the middle of the top of the inner wall of the oven body (1), an exhaust fan (25) is fixedly connected to the bottom of the exhaust scoop (24), a filter screen plate (26) is arranged at the bottom of the exhaust fan (25), a rotary wheel sleeve (17) is rotatably connected to the top of the exhaust scoop (24), a heating ring plate (20) is arranged on the inner wall of the rotating wheel sleeve (17), an adsorption ring plate (19) is arranged on the inner wall of the heating ring plate (20), an exhaust plate (16) is arranged at the middle of the top of the rotating wheel sleeve (17), and a rear end of the oven body (1) is provided with a heat exchanger (20). Two fans (30) are fixedly connected through the side, the air outlet of the fan (30) is fixedly connected with a second filter plate (31), the air inlet of the fan (30) is fixedly connected with a first connecting sleeve (29), the adjacent side of the first connecting sleeve (29) is fixedly connected with a second connecting sleeve (35), the inner wall of the first connecting sleeve (29) is provided with a heating plate three (32), the inner wall of the second connecting sleeve (35) is provided with a heating plate four (34), the middle part of the right side of the second connecting sleeve (35) is penetrated and fixedly connected with an air inlet scoop (28), the top two sides of the air inlet scoop (28) are fixedly connected with a protective box (4), the inner wall of the air inlet scoop (28) is provided with a dustproof plate (27), and the right side of the air inlet scoop (28) is fixedly connected with a cleaning component.

2. A hot air circulation regulating device for an oven according to claim 1, characterized in that: The cleaning assembly comprises a cleaning sleeve (36), both sides of the bottom of the cleaning sleeve (36) are fixedly connected to a transmission motor (41), the output end of the transmission motor (41) is fixedly connected to a threaded rod (40), the outer wall of the threaded rod (40) is threadedly connected to a movable block (38), an adjacent side of the movable block (38) is fixedly connected to a fixed sleeve (42), the front end of the fixed sleeve (42) is fixedly connected to a rotating motor 2 (6), the output end of the rotating motor 2 (6) is fixedly connected to a brush roller (33), and the top of the threaded rod (40) is fixedly connected to a rotating rod (44).

3. A hot air circulation regulating device for an oven according to claim 2, characterized in that: The top of the rotating rod (44) is fixedly connected to a driving gear (43), the driving gear (43) is meshedly connected to a transmission gear (13), the transmission gear (13) is meshedly connected to a driven gear (37), the bottom of the driven gear (37) is fixedly connected to a reciprocating screw rod (39), the outer wall of the reciprocating screw rod (39) is movably connected to a slider (3), and a cleaning brush (18) is fixedly connected between the right sides of the slider (3).

4. A hot air circulation regulating device for an oven according to claim 1, characterized in that: A return air pump (8) is fixedly connected to the right side of the top of the oven body (1); an exhaust pipe (9) is fixedly connected to the input end of the return air pump (8); the exhaust pipe (9) is fixedly connected to the circulation box (10); an output end of the return air pump (8) is fixedly connected to the return air pipe (7); and the bottom end of the return air pipe (7) is fixedly connected to the oven body (1).

5. The hot air circulation regulating device for an oven according to claim 1, characterized in that: A plurality of connecting rods (11) are fixedly connected to the top of the wheel sleeve (17), and the tops of the connecting rods (11) are fixedly connected to the circulation box (10).

6. A hot air circulation regulating device for an oven according to claim 5, characterized in that: A rotating motor (23) is fixedly connected to the left side of the inner wall of the circulation box (10), a rotating shaft (22) is fixedly connected to the output end of the rotating motor (23), and two limiting plates (21) are fixedly connected to the outer wall of the rotating shaft (22).

7. A hot air circulation regulating device for an oven according to claim 6, characterized in that: A rotating belt (12) is provided between adjacent sides of the limiting plate (21), the rotating shaft (22) is rotatably connected to the rotating belt (12), and a rotating wheel sleeve (17) is movably connected to the inner wall of the rotating belt (12).

8. The hot air circulation regulating device for an oven according to claim 1, characterized in that: The inner wall of the oven body (1) is fixedly connected with a built-in sleeve (15), the outer wall of the built-in sleeve (15) is penetrated and provided with evenly distributed through holes (14), and a plurality of placement plates (5) are provided inside the built-in sleeve (15).

Images