Forward and reverse rotation device for circulating fan in bulk baking process

Abstract

The utility model relates to the technical field of tobacco leaf curing, in particular to a circulating fan forward and reverse rotation device in the bulk curing process, which comprises a curing barn, a heating device, a ventilation pipeline, a circulating fan, a shutter, a steering assembly and a wind speed adjusting assembly, the curing barn is connected with the heating device, and the output end of the heating device is connected with the ventilation pipeline; the circulating fan is connected into the ventilation pipeline; the steering assembly is connected to the ventilation pipeline, and the wind speed adjusting assembly is connected to the louver. According to the utility model, the rotating end of the steering assembly drives the circulating fan to rotate, so that the circulating fan performs 180-degree reciprocating rotation, the flowing direction of hot air is changed, and the hot air can be in contact with tobacco leaves from the top or the bottom of the curing barn for curing; the angle between the rotating end and the shutter is changed, so that the air speed is changed, and meanwhile, the ventilation pipeline can be closed, so that the air outlet position and the baking mode of the circulating fan are changed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tobacco leaf baking technology, specifically relates to a circulating fan forward and reverse device in the intensive baking process. BACKGROUND

[0002] Tobacco leaf intensive curing barn is the carrier of tobacco leaf baking technology, and it is crucial to guarantee the quality of tobacco leaf baking, and the tobacco leaf intensive curing barn in China has two forms of air up and air down, which are both forced ventilation in the curing barn by circulating fan.

[0003] Through the search, the patent announcement number CN208338859U discloses a kind of air flow forward and reverse circulation baking's intensive curing barn, including heating chamber and tobacco chamber, heating chamber is provided with heating device and heat exchanger, the heating device is connected with heat exchanger, one end of heat exchanger is provided with forward and reverse fan, the upper portion of heating chamber is provided with ventilation opening A, the upper portion of heating chamber is provided with return air opening, return air opening is communicated with the heating chamber and tobacco chamber, the lower portion of tobacco chamber is provided with ventilation opening B, ventilation opening B is communicated with the tobacco chamber and the heat exchanger, the bottom of tobacco chamber is provided with ventilation opening C, the forward and reverse fan is controlled by controller.This kind of design can realize air up, air down alternate baking tobacco leaf, greatly reduce the influence caused by vertical temperature difference of tobacco chamber, can faster dry tobacco leaf, and the quality of tobacco leaf after baking is better.Also, circulating alternate baking avoids the problem of condensation water droplets on the top of tobacco chamber.

[0004] However, in the above technical solution, the forward and reverse fan is controlled by the controller to rotate forward and reverse to make the air up and air down alternate baking tobacco leaf, but although the forward and reverse fan can be controlled by forward and reverse motor, the angle of blade or impeller for generating wind power cannot be changed, so that the wind power generated by the forward and reverse fan is different when rotating forward and reverse, and the air flow that can be driven is also different. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art, and provides a circulating fan forward and reverse device in the intensive baking process.

[0006] The technical solution of the utility model: a forward and reverse rotation device for a circulating fan in an intensive baking process, comprising a baking room, which is connected to a heating device, and the output end of the heating device is connected to a ventilation duct; a circulating fan, which is connected to the ventilation duct; two shutters, which are connected to the ventilation duct; a steering component, which is connected to the ventilation duct; when the steering component is in use, the rotating end of the steering component drives the circulating fan component to rotate, so that the air outlet end of the circulating fan is converted into the air inlet end; a wind speed adjustment component, which is connected to the shutter; when the wind speed adjustment component is in use, the multiple rotating ends of the wind speed adjustment component rotate, and the angle between the rotating end and the shutter changes, thereby changing the wind speed.

[0007] Preferably, the circulating fan consists of a fixed frame, a fixed shaft and a fan body. The fixed frame is connected to the ventilation duct. A circular notch is opened in the fixed frame. The fan body is arranged in the notch. One end of two symmetrically arranged fixed shafts is rotatably connected to the fixed frame, and the other end of the fixed shaft is connected to the fan body.

[0008] Preferably, the steering assembly includes a driving device, which is connected to the ventilation duct, and the output end of the starting device is connected to the output shaft; a driving gear, which is connected to the output shaft; a driven gear, which is connected to any fixed shaft, and the driven gear is meshed with the driving gear for transmission connection; an in-place detection assembly, which is connected to the fixed frame; when the in-place detection assembly is in use, the in-place detection assembly emits and receives light to detect the position of the fan body.

[0009] Preferably, the in-place detection component includes a photoelectric sensor, which is connected to the fixed frame, and the transmitting end and the receiving end of the photoelectric sensor are respectively located in the receiving grooves opened on both sides of the fixed frame; an alarm light, which is connected to the ventilation duct, and the alarm light is electrically connected to the photoelectric sensor.

[0010] Preferably, the shutters are composed of a window frame, blades and a support shaft. The window frame is connected to the air inlet of the baking room. Both ends of the multiple support shafts are rotatably connected to the window frame. The number of blades corresponds to the support shaft, and the blades are connected to the support shaft.

[0011] Preferably, the wind speed adjustment assembly includes a driving gear, the number of which corresponds to the support shaft, and the driving gear is connected to either end of the support shaft; a telescopic device, which is connected to the window frame; a rack, which is connected to the telescopic end of the telescopic device, one end of the rack is connected to the sliding rod, and the sliding rod is slidably connected to the accommodating groove opened in the window frame.

[0012] Preferably, rubber blocks are connected between adjacent blades.

[0013] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0014] In the present invention, the rotating end of the steering assembly drives the circulating fan to rotate, causing the circulating fan to rotate back and forth 180 degrees, so that the air outlet end of the circulating fan is transformed into the air inlet end or the air inlet end is transformed into the air outlet end, changing the flow direction of the hot air so that the hot air can contact the tobacco leaves from the top or bottom of the curing room for baking. The multiple rotating ends of the wind speed adjustment assembly rotate, and the angle between the rotating end and the blinds changes, thereby changing the wind speed. At the same time, the ventilation duct can also be closed to enable the circulating fan to change the air outlet position and baking method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 for Figure 1 A magnified view of the structure at point A;

[0017] Figure 3 It is a schematic diagram of the circulation fan structure;

[0018] Figure 4 Schematic diagram of the shutter structure.

[0019] Figure numerals: 1. baking room; 2. heating device; 3. ventilation duct; 4. circulating fan; 5. shutter; 6. fixed frame; 7. fixed shaft; 8. fan body; 9. driving device; 10. output shaft; 11. driving gear; 12. driven gear; 13. photoelectric sensor; 14. alarm light; 15. window frame; 16. blade; 17. supporting shaft; 18. driving gear; 19. telescopic device; 20. rack; 21. sliding rod. DETAILED DESCRIPTION

[0020] Example 1

[0021] like Figure 1-Figure 4 As shown, the utility model proposes a forward and reverse rotation device for a circulating fan in an intensive baking process, comprising a baking room 1, a heating device 2, a ventilation duct 3, a circulating fan 4, a shutter 5, a steering assembly, and a wind speed adjustment assembly. The baking room 1 is connected to the heating device 2; the baking room 1 is divided into a heating chamber and a smoke loading chamber, a ventilation opening is provided on the smoke loading chamber, the heating device 2 is selected from but not limited to an air energy heat pump; the output end of the heating device 2 is connected to the ventilation duct 3; the circulating fan 4 is connected to the ventilation duct 3;

[0022] In an optional embodiment, the circulating fan 4 is composed of a fixed frame 6, a fixed shaft 7 and a fan body 8. The fixed frame 6 is connected to the ventilation duct 3. A circular notch is opened in the fixed frame 6, and the fan body 8 is arranged in the notch. One end of two symmetrically arranged fixed shafts 7 is rotatably connected to the fixed frame 6, and the other end of the fixed shaft 7 is connected to the fan body 8.

[0023] The two symmetrical shutters 5 are connected to the ventilation duct 3.

[0024] In an alternative embodiment, the shutter 5 is composed of a window frame 15, blades 16 and support shafts 17, the window frame 15 is connected to the air inlet of the curing barn 1, a plurality of support shafts 17 are rotatably connected to the window frame 15 at both ends of the window frame 15 at equal intervals along the length direction of the window frame 15, the number of blades 16 corresponds to the number of support shafts 17, and the blades 16 are connected to the support shafts 17.

[0025] In an alternative embodiment, a rubber block is connected between adjacent blades 16 to enhance the sealing effect of the blades 16 in the closed state.

[0026] The turning assembly is connected to the ventilation duct 3, and in use, the rotating end of the turning assembly drives the circulating fan 4 assembly to rotate, so that the circulating fan 4 performs 180-degree reciprocating rotation, the air outlet end of the circulating fan 4 is changed into an air inlet end or the air inlet end is changed into the air outlet end, the flow direction of the hot air is changed, and the hot air can contact the tobacco leaves from the top or the bottom of the curing barn 1 for curing.

[0027] Embodiment Two

[0028] As shown in Figure 1-Figure 3 the dense curing process, the circulating fan reversing device comprises a driving device 9, an output shaft 10, a driving gear 11, a driven gear 12 and a position detection assembly, the driving device 9 is connected to the ventilation duct 3, and the output end of the driving device 9 is connected to the output shaft 10; the driving device 9 is selected from but not limited to a stepping motor and a servo motor; the driving gear 11 is connected to the output shaft 10, the driven gear 12 is connected to any one of the fixed shafts 7, and the driven gear 12 is in meshing transmission connection with the driving gear 11; the position detection assembly is connected to the fixed frame 6; in use, the position detection assembly emits and receives light to detect the position of the fan body 8.

[0029] In an alternative embodiment, the position detection assembly comprises a photoelectric sensor 13 and an alarm lamp 14, the photoelectric sensor 13 is connected to the fixed frame 6, and the emitting end and the receiving end of the photoelectric sensor 13 are located in the accommodating grooves opened on both sides of the fixed frame 6; the photoelectric sensor 13 is selected from but not limited to a reflection type sensor; the alarm lamp 14 is connected to the ventilation duct 3, and the alarm lamp 14 is electrically connected to the photoelectric sensor 13; the alarm lamp 14 is selected from but not limited to a three-color alarm lamp.

[0030] Example 3

[0031] like Figure 1 、 Figure 4 As shown, the utility model proposes a forward and reverse rotation device for a circulating fan during intensive baking. Compared with the second embodiment, the detailed structure of the wind speed adjustment component is recorded in this embodiment. The wind speed adjustment component includes a driving gear 18, a telescopic device 19, a rack 20 and a sliding rod 21. The number of driving gears 18 corresponds to the support shaft 17. The driving gear 18 is connected to either end of the support shaft 17. The telescopic device 19 is connected to the window frame 15; the telescopic device 19 is selected from but not limited to a hydraulic cylinder or an electric push rod; the rack 20 is connected to the telescopic end of the telescopic device 19, one end of the rack 20 is connected to the sliding rod 21, and the sliding rod 21 is slidably connected to the accommodating groove opened in the window frame 15.

[0032] In summary, when the present invention is used, the tobacco leaves to be baked need to be hung on a hanger or hanging device in the baking room 1, and fresh air is sucked in through the heating device 2 to heat the fresh air and discharge it into the ventilation duct 3. According to the difference between the rising airflow baking and the descending airflow baking, the two shutters 5 are controlled by the controller installed in the baking room 1. The controller controls the telescopic end of the telescopic device 19 to extend and drive the rack 20 to move. The rack 20 engages with the driving gear 18 during the horizontal movement to drive it to rotate. The driving gear 18 drives the support shaft 17 and the blades 16 to rotate. The ventilation and closing states of the shutters 5 can be controlled by controlling the angle of the blades 16. At the same time, the area of ​​the air outlet can be increased by controlling the angle of the blades 16, thereby increasing or reducing the wind speed when the speed of the circulating fan 4 is inconvenient. After starting the circulating fan 4, it rotates and blows the hot air in the ventilation duct 3, so that the hot air is blown from the shutters 5 to the tobacco leaves for baking. The steam generated by baking will be discharged into the heating chamber through the through holes opened on the partition. The air is then discharged from the baking room 1. When the two baking modes of air flow rising baking and air flow descending baking are changed, the controller is used to control the forward and reverse rotation of the output end of the driving device 9. The output end of the driving device 9 rotates to drive the rotation of the output shaft 10 and the driving gear 11. The driving gear 11 is engaged with the driven gear 12 on the fixed shaft 7 to drive the fixed shaft 7 and the fan body 8 to rotate 180 degrees. The positions of the air inlet and the air outlet of the fan body 8 are reversed, so that the two baking modes of air flow rising baking and air flow descending baking can be changed, and the baking is more uniform. When the fan body 8 is adjusted, the photoelectric sensor 13 on the fixed frame 6 emits light to detect the current position of the fan body 8. When the position of the fan body 8 is deflected and blocks the light emitted by the photoelectric sensor 13, the signal emitted by the photoelectric sensor 13 will enter the controller and then control the alarm light 14 to light up red. When the fan body 8 is adjusted into place, the light of the photoelectric sensor 13 is not blocked by foreign objects, and the alarm light 14 lights up green to indicate the current state.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A forward and reverse rotation device for a circulating fan during intensive baking, characterized in that: include A baking room (1) is connected to a heating device (2), and an output end of the heating device (2) is connected to a ventilation duct (3); a circulation fan (4), which is connected to the ventilation duct (3); Two shutters (5) are provided, and the shutters (5) are connected to the ventilation duct (3); A steering assembly is connected to the ventilation duct (3); when the steering assembly is in use, the rotating end of the steering assembly drives the circulation fan (4) assembly to rotate, so that the air outlet end of the circulation fan (4) is transformed into the air inlet end; The wind speed regulating component is connected to the shutter (5); when the wind speed regulating component is in use, the multiple rotating ends of the wind speed regulating component rotate, and the angle between the rotating end and the shutter (5) changes, thereby changing the wind speed.

2. The device for rotating the circulating fan in a intensive baking process according to claim 1, characterized in that: The circulation fan (4) is composed of a fixed frame (6), a fixed shaft (7) and a fan body (8). The fixed frame (6) is connected to the ventilation duct (3). A circular notch is provided in the fixed frame (6). The fan body (8) is arranged in the notch. One end of two symmetrically arranged fixed shafts (7) is rotatably connected to the fixed frame (6), and the other end of the fixed shaft (7) is connected to the fan body (8).

3. The device for rotating the circulating fan in a intensive baking process according to claim 2, characterized in that: Steering components include A driving device (9) is connected to the ventilation duct (3), and an output end of the driving device (9) is connected to an output shaft (10); a driving gear (11) connected to the output shaft (10); A driven gear (12) is connected to any one of the fixed shafts (7), and the driven gear (12) is meshed and connected to the driving gear (11); The in-position detection component is connected to the fixed frame (6); when the in-position detection component is in use, the in-position detection component emits and receives light to detect the position of the fan body (8).

4. The device for rotating the circulating fan in a intensive baking process according to claim 3, characterized in that: In-place detection components include A photoelectric sensor (13) is connected to the fixed frame (6), and a transmitting end and a receiving end of the photoelectric sensor (13) are respectively located in receiving grooves opened on both sides of the fixed frame (6); An alarm light (14) is connected to the ventilation duct (3), and the alarm light (14) is electrically connected to the photoelectric sensor (13).

5. The device for rotating the circulating fan in a intensive baking process according to claim 1, characterized in that: The shutter (5) is composed of a window frame (15), blades (16) and a support shaft (17). The window frame (15) is connected to the air inlet of the baking room (1). The two ends of the plurality of support shafts (17) are rotatably connected to the window frame (15). The number of blades (16) corresponds to the number of support shafts (17), and the blades (16) are connected to the support shaft (17).

6. The device for rotating the circulating fan in a intensive baking process according to claim 5, characterized in that: Wind speed adjustment components include The number of the driving gears (18) corresponds to the number of the supporting shafts (17), and the driving gears (18) are connected to either end of the supporting shafts (17); a telescopic device (19) connected to the window frame (15); A rack (20) is connected to the telescopic end of the telescopic device (19). One end of the rack (20) is connected to a sliding rod (21). The sliding rod (21) is slidably connected to a receiving groove provided in the window frame (15).

7. The device for rotating the circulating fan in a intensive baking process according to claim 5, characterized in that: Rubber blocks are connected between adjacent blades (16).

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