An air source heat pump tobacco curing device

Abstract

This invention discloses an air-source heat pump tobacco curing device, including a heating mechanism installed in a heating chamber. A dehumidification mechanism is installed within the heating chamber. Multiple loops are formed between the heating mechanism and the dehumidification mechanism via pipes. An electric auxiliary heating wire is installed on the lower side of the heating condenser. A defrosting fan and an electrically controlled cold air inlet for the curing barn are located between the dehumidification condenser and the electric auxiliary heating wire. A dense curing barn circulating fan is installed above the heating condenser. A curing chamber is located on the left side of the heating chamber and is connected to it. The upper connection between the heating chamber and the curing chamber is the curing barn hot air outlet, and the lower connection is the curing barn return air inlet. A tobacco hanging mechanism is installed inside the curing chamber. This invention improves the curing uniformity of tobacco in both the upper and lower positions by using the tobacco hanging mechanism and the conveyor belt.

Description

Technical Field

[0001] This invention belongs to the field of tobacco processing technology, specifically relating to an air source heat pump tobacco roasting device. Background Technology

[0002] Tobacco is an important economic crop. When tobacco is harvested, tobacco curing equipment is often used to cure the tobacco, thereby reducing the moisture content and making it easier to store.

[0003] Some existing tobacco curing equipment consists of a tobacco hanging beam, a heat collection mechanism, and a dehumidification mechanism. During operation, tobacco is first hung on vertically equidistant tobacco hanging beams. Then, the heat collection mechanism draws outside air into the curing chamber and heats the air, allowing it to contact the tobacco sequentially from top to bottom, causing the moisture in the tobacco to evaporate. The evaporated moisture is then extracted by the dehumidification mechanism, and this cycle is repeated to complete the tobacco curing process. However, because the tobacco hanging beams are vertically equidistant, the tobacco at different positions is on the same vertical plane. When the hot air contacts the tobacco sequentially from top to bottom, the tobacco at the top is always in contact with the hottest air, while the tobacco at the bottom only comes into contact with the cooler air. This results in uneven curing uniformity between the upper and lower tobacco positions, thus affecting the quality of the tobacco. Summary of the Invention

[0004] In view of the shortcomings of existing tobacco roasting equipment mentioned in the background art, the present invention provides an air source heat pump tobacco roasting device, which has the advantages of improving the roasting uniformity of tobacco in the upper and lower positions and improving tobacco quality, thus solving the technical problems mentioned in the background art.

[0005] This invention provides the following technical solution: an air source heat pump tobacco drying equipment, comprising a heating mechanism, which includes a heating evaporator, a compressor, and a heating condenser. The heating mechanism is installed in a heating chamber, which is equipped with a dehumidification mechanism, which includes a dehumidifying evaporator, a dehumidifying condenser, and a compressor. Multiple loops are formed between the heating mechanism and the dehumidification mechanism via pipes. Electronic valves are installed on the pipes. An electric auxiliary heating wire is installed on the lower side of the heating condenser. An electrically controlled dehumidification door is installed in the heating chamber. The dehumidifying condenser... A defrosting fan and an electrically controlled cold air inlet for the curing barn are installed between the heating element and the electric auxiliary heating wire. A dense curing barn circulating fan is installed above the heating condenser. A curing chamber is located on the left side of the heating chamber, and the heating chamber and the curing chamber are connected. The upper connection between the heating chamber and the curing chamber is the curing barn hot air outlet, and the lower connection between the heating chamber and the curing chamber is the curing barn return air outlet. A tobacco loading door is installed inside the left wall of the curing chamber. An outdoor rainproof canopy is installed on the upper side of both the curing chamber and the heating chamber. A tobacco hanging mechanism is installed inside the curing chamber to continuously change the height of the tobacco.

[0006] Furthermore, the tobacco hanging mechanism includes partition walls, tobacco hanging beams, and conveyor belts. The walls on the left and right sides of the tobacco curing chamber are partition walls, and conveyor belts are fixedly installed inside the partition walls. The tobacco hanging beams are rotatably installed on the opposite sides of the conveyor belts on the left and right sides.

[0007] Furthermore, the tobacco hanging mechanism includes partition walls, conveyor belts, turntables, rotating rings, main rotating components, rotating shafts, driven rotating components, deflecting rods, cross rods, levers, and contact components. The walls on the left and right sides of the tobacco curing chamber are partition walls. Conveyor belts are fixedly installed inside the partition walls. Turntables are rotatably installed on the opposite sides of the conveyor belts on the left and right sides. Rotating rings are rotatably installed on the sides of the turntables. The main rotating component is fixedly installed on the opposite sides of the rotating rings on the left and right sides. A rotating shaft is rotatably installed on the side of the turntable located inside the rotating ring. The two sides of the rotating shaft on the right are fixed with a driven component. The lower side of the main rotating component and the lower side of the driven rotating component are both fixed with deflection rods at equal axial distances. The sides of the main rotating component and the driven rotating component are jointly installed with cross rods, so that the main rotating component and the driven rotating component rotate relative to each other. A lever is fixedly installed on the upper side of the main rotating component. A contact component is installed above the conveyor belt. The contact component is fixedly connected to the partition wall. When the conveyor belt drives the turntable to move to a position close to the contact component, the lever contacts the contact component.

[0008] Furthermore, the conveyor belt is set at an inclined angle.

[0009] Furthermore, the crossbar consists of two rods arranged in a cross configuration. One rod is movably connected between the upper part of the side of the main rotating component and the lower part of the side of the secondary rotating component, while the other rod is movably connected between the lower part of the side of the main rotating component and the upper part of the side of the secondary rotating component.

[0010] Furthermore, there is a gap between the main converter and the slave converter.

[0011] Furthermore, after the lever leaves the contact member, the deflector rod and the tobacco are quickly reset due to their own gravity, causing the tobacco to fan.

[0012] Beneficial effects:

[0013] 1. This invention, through the arrangement of the tobacco hanging mechanism and the conveyor belt, allows the conveyor belt to drive the tobacco hanging mechanism to move during the tobacco roasting process. This causes the tobacco at the upper and lower positions to continuously exchange their heights, ensuring that the tobacco at each position can come into contact with the hottest air. Through this action, the roasting uniformity of the tobacco at the upper and lower positions is improved. At the same time, since the conveyor belt is inclined, the tobacco at the upper and lower positions is on a separate vertical path for most of the time. This reduces the probability that the moisture evaporated from the upper tobacco comes into contact with the tobacco at the lower position when the hot air comes into contact with it, thereby reducing the impact of moisture on the tobacco roasting efficiency.

[0014] 2. This invention, through the arrangement of a main rotating component, a secondary rotating component, and a deflecting rod, allows the tobacco to rotate relative to the main rotating component when the tobacco-hanging mechanism moves to the upper position during the process of the conveyor belt driving the tobacco-hanging mechanism. This causes the corresponding deflecting rods to open the tobacco leaves, resulting in an inclined state. Through this action, the tobacco can come into contact with the hottest air within a unit of time, thereby accelerating the tobacco roasting efficiency. Afterward, when the tobacco-hanging mechanism moves away from the upper position, the main rotating component and the secondary rotating component return to their original positions, creating a gap between them. This gap further increases the contact between the inner surface of the tobacco and the hot air, thereby further accelerating the tobacco roasting efficiency.

[0015] 3. Through the arrangement of the main rotating component, the secondary rotating component, and the deflection rod, when the tobacco hanging mechanism leaves the upper position, the tobacco and the deflection rod quickly return to their original positions due to their own gravity, causing the tobacco to fan. This action accelerates the airflow within the baking mechanism, allowing hot air to contact the tobacco more quickly and moisture to be discharged from below more quickly, thereby accelerating the baking efficiency of the tobacco. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the tobacco curing chamber and the heating chamber in Embodiment 1 of the present invention;

[0017] Figure 2This is a schematic diagram of the cigarette hanging mechanism in Embodiment 1 of the present invention;

[0018] Figure 3 These are schematic diagrams of the cigarette hanging mechanism in Embodiments 2 and 3 of the present invention;

[0019] Figure 4 This is a schematic diagram of the crossbar connection state in Embodiments 2 and 3 of the present invention;

[0020] Figure 5 This is a schematic diagram showing the relative states of the rotating ring and the rotating shaft in Embodiments 2 and 3 of the present invention.

[0021] In the diagram: 1. Heating evaporator; 2. Electrically controlled exhaust door of the drying room; 3. Condensate; 4. Dehumidifying evaporator; 5. Dehumidifying condenser; 6. Defrosting fan; 7. Electrically controlled cold air inlet door of the drying room; 8. Electric auxiliary heating wire; 9. Electronic switch valve; 10. Compressor 1; 11. Compressor 2; 12. Heating condenser; 13. Dense drying room circulating fan; 14. Drying room hot air outlet; 15. Partition wall; 16. Smoke hanging beam; 17. Smoke loading door; 18. Drying room return air vent; 19. Outdoor rainproof canopy; 20. Conveyor belt; 21. Turntable; 22. Rotary ring; 23. Main rotating component; 24. Rotating shaft; 25. Slave rotating component; 26. Deflector rod; 27. Cross rod; 28. Toggle rod; 29. ​​Contact element. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1

[0024] Please see Figure 1 and Figure 2An air-source heat pump tobacco roasting device includes a heating mechanism comprising a heating evaporator 1, a compressor 11, and a heating condenser 12. The heating evaporator 1 is installed on the far right of the heating chamber, and the compressor 11 is installed above the heating evaporator 1. The heating condenser 12 is installed on the left side of the heating chamber. A dehumidification mechanism is provided in the heating chamber, comprising a dehumidifying evaporator 4, a dehumidifying condenser 5, and a compressor 10. The dehumidifying condenser 5 is located below the heating condenser 12, and the dehumidifying evaporator 4 is located below the dehumidifying condenser 5. The compressor 10 is located to the left of the compressor 11. Multiple loops are formed between the compressors 1 and 12 via pipes (existing technology). An electronic switch valve 9 is installed on the connecting pipe between the heating evaporator 1, dehumidifying condenser 5, and heating condenser 12. An electric auxiliary heating wire 8 is installed on the lower side of the heating condenser 12. An electrically controlled exhaust door 2 is installed inside the heating chamber. The dehumidification mechanism discharges condensate 3 to the outside environment through the electrically controlled exhaust door 2. A defrosting fan 6 and an electrically controlled cold air inlet door 7 are sequentially arranged from bottom to top between the dehumidifying condenser 5 and the electric auxiliary heating wire 8. Outside air enters the heating chamber through the electrically controlled cold air inlet door 7. A dense circulating fan 13 is installed above the heating condenser 12. A tobacco curing chamber is located on the left side of the heating chamber, and the heating chamber is connected to the tobacco curing chamber. The upper connection of the tobacco curing chamber is the hot air outlet 14 of the curing barn, and the lower connection between the heating chamber and the tobacco curing chamber is the return air inlet 18 of the curing barn. A tobacco hanging mechanism is installed in the tobacco curing chamber, which includes a partition wall 15, a tobacco hanging beam 16, and a conveyor belt 20. The walls on the left and right sides of the tobacco curing chamber are partition walls 15, and a conveyor belt 20 (a combination of a conveyor belt and a power source in the prior art) is fixedly connected inside the partition walls 15. The tobacco hanging beam 16 is installed on the opposite sides of the left and right conveyor belts 20. A tobacco loading door 17 is installed in the left wall of the tobacco curing chamber. An outdoor rain shelter 19 is provided on the upper side of both the tobacco curing chamber and the heating chamber. The conveyor belt 20 is set at an inclined angle. After the tobacco is hung on the tobacco hanging beam 16, the heating and dehumidification mechanisms are activated, so that the heating chamber blows hot air. Hot air is discharged into the upper part of the curing chamber through the hot air outlet 14, allowing the hot air to contact the tobacco sequentially from top to bottom, evaporating the moisture inside the tobacco. This air then carries the moisture through the return air vent 18 into the dehumidification mechanism, where it is converted into condensate 3 and discharged into the outside environment. Simultaneously, the conveyor belt 20 moves the tobacco hanging beam 16, causing the tobacco at different heights to continuously exchange positions, ensuring that each piece of tobacco at any height comes into contact with the hottest air entering the curing chamber. This process improves the uniformity of curing the tobacco. Furthermore, because the conveyor belt 20 is inclined, the tobacco at different positions remains on a single vertical path for most of the time.This reduces the probability that the moisture evaporated from the hot air when it comes into contact with the upper layer of tobacco will come into contact with the lower layer of tobacco, thus reducing the impact of moisture on the tobacco roasting efficiency.

[0025] The method of using (working principle) of this invention is as follows:

[0026] During operation, firstly, the tobacco loading door 17 is opened, and workers hang the tobacco on the tobacco hanging beam 16. Then, the loading door 17 is closed, and the defrosting fan 6 and the intensive curing barn circulating fan 13 are activated, drawing outside air into the heating chamber and circulating it between the heating chamber and the curing chamber. Next, the heating evaporator 1, the electric auxiliary heating wire 8, the compressor 11, and the heating condenser 12 are activated, heating the air. Simultaneously, the dehumidifying evaporator 4, the dehumidifying condenser 5, and the compressor 10 are activated. The heated air then circulates between the heating chamber and the curing chamber, contacting the tobacco and allowing the tobacco to absorb heat. The moisture evaporates and is carried by the circulating airflow into the dehumidifying evaporator 4, the dehumidifying condenser 5, and the compressor 10, where it is converted into condensate 3 and finally discharged into the external environment through the electrically controlled exhaust door 2 of the curing barn. During the tobacco curing process, the conveyor belt 20 is operated, which moves the tobacco hanging beam 16, causing the upper and lower positions of the tobacco hanging beam 16 to continuously move the tobacco to exchange its height, thereby improving the uniformity of tobacco curing. After the tobacco curing is completed, the above mechanism is stopped, and the tobacco loading door 17 is opened to remove the tobacco. This is one work cycle.

[0027] Example 2

[0028] Unlike Example 1, please refer to Figures 3-5The cigarette hanging mechanism includes a partition wall 15, a conveyor belt 20, a turntable 21, a rotating ring 22, a main rotating component 23, a rotating shaft 24, a driven rotating component 25, a deflecting rod 26, a cross rod 27, a lever 28, and a contact component 29. Turntables 21 are rotatably mounted on opposite sides of the left and right conveyor belts 20. Rotating rings 22 are rotatably mounted on the sides of the turntables 21. The main rotating component 23 is welded to the opposite sides of the left and right rotating rings 22. A rotating shaft 24 is rotatably mounted on the side of the turntable 21, located inside the rotating ring 22. Driven rotating components 25 are welded to the opposite sides of the left and right rotating shafts 24. A deflecting rod 26 is axially and equidistantly welded to the lower side of both the main rotating component 23 and the driven rotating component 25. A cross rod 27 is installed on the opposite sides of the main rotating component 23 and the driven rotating component 25. The cross rod 27 consists of two rods arranged in a cross configuration. One rod is hinged between the upper part of the side of the main rotating component 23 and the lower part of the side of the driven rotating component 25, and the other rod is hinged between the lower part of the side of the main rotating component 23 and the upper part of the side of the driven rotating component 25. There is a gap between the main rotating component 23 and the driven rotating component 25. A lever 28 is welded to the upper side of the main rotating component 23. The conveyor belt 20... A contact 29 is installed at the top, and the contact 29 is fixedly engaged with the partition wall 15. When the conveyor belt 20 moves the turntable 21 to a position close to the contact 29, the lever 28 contacts the contact 29. During the tobacco roasting process, the conveyor belt 20 moves the turntable 21, causing the main rotating component 23 and the driven rotating component 25 to continuously change their height. Then, when the turntable 21 moves to a position close to the contact 29, the lever 28 will contact the contact 29, causing the main rotating component 23 to deflect. At the same time, the main rotating component 23 will drive the driven rotating component 25 through the cross lever 27. The relative rotation of component 25 causes the deflection rod 26 corresponding to both to open the tobacco, making the tobacco leaves tilted. Through this action, the tobacco can come into contact with the hottest air in a large amount of time, thereby accelerating the tobacco roasting efficiency. Afterwards, when the lever 28 leaves the contact component 29, the gravity of the tobacco and the deflection rod 26 causes the main rotating component 23 and the secondary rotating component 25 to return to their original positions, creating a gap between them. This gap increases the amount of contact between the inner surface of the tobacco and the hot air, thereby further accelerating the tobacco roasting efficiency.

[0029] The method of using (working principle) of this invention is as follows:

[0030] During operation, firstly, open the tobacco loading door 17 and instruct the worker to hang the tobacco on the main rotating component 23 and the driven rotating component 25, ensuring that the corresponding deflection rods 26 are positioned inside the tobacco leaves on both sides. Then, close the loading door 17 and operate the defrosting fan 6 and the dense curing barn circulating fan 13, drawing outside air into the heating chamber and circulating it between the heating chamber and the curing chamber. Next, operate the heating evaporator 1, the electric auxiliary heating wire 8, the compressor 11, and the heating condenser 12 to heat the air. Simultaneously, operate the dehumidifying evaporator 4, the dehumidifying condenser 5, and the compressor 10. The heated air then circulates between the heating chamber and the curing chamber, contacting the tobacco and causing the moisture inside the tobacco to evaporate. This moisture is then carried by the circulating airflow into the dehumidifying evaporator 4, the dehumidifying condenser 5, and the compressor 10, where it is converted into condensate 3, which is finally discharged into the outside environment through the electrically controlled exhaust door 2 of the curing barn. During the tobacco roasting process, the conveyor belt 20 is operated, causing the turntable 21 to move. This causes the main rotating component 23 and the secondary rotating component 25 to exchange the height of the tobacco at different positions, thereby improving the uniformity of tobacco roasting. Then, when the turntable 21 approaches the contact member 29, the lever 28 corresponding to the turntable 21 contacts the contact member 29, causing the lever 28 to drive the main rotating component 23 to rotate. The rotating main rotating component 23 drives the secondary rotating component 25 to move relative to each other through the cross rod 27, causing the deflection rod 26 to open the tobacco leaves on both sides. This allows the tobacco to come into contact with the hottest air in a unit of time. Then, when the lever 28 leaves the contact member 29, the deflection rod 26 and the tobacco drive the main rotating component 23 and the secondary rotating component 25 to return to their original positions through their own gravity. Finally, when the tobacco is roasted, the above mechanism is stopped, and the tobacco loading door 17 is opened to remove the tobacco. This completes one work cycle.

[0031] Example 3

[0032] Unlike Example 2, please refer to Figure 3 When the lever 28 leaves the contact member 29, the tobacco and the deflector 26 quickly return to their original positions due to their own gravity, causing the tobacco to fan. This action accelerates the airflow in the tobacco curing chamber, allowing hot air to contact the tobacco more quickly and moisture to be expelled from the curing chamber more quickly, thereby accelerating the tobacco curing efficiency.

Claims

1. An air-source heat pump tobacco curing device, comprising a heating mechanism, wherein the heating mechanism includes a heating evaporator (1), a second compressor (11), and a heating condenser (12), the heating mechanism is installed in a heating chamber, the heating chamber is provided with a dehumidification mechanism, the dehumidification mechanism includes a dehumidifying evaporator (4), a dehumidifying condenser (5), and a first compressor (10), the heating mechanism and the dehumidification mechanism are connected by pipes to form multiple loops, the pipes are equipped with electronic switch valves (9), an electric auxiliary heating wire (8) is installed on the lower side of the heating condenser (12), the heating chamber is equipped with an electrically controlled dehumidification door (2), and a position is provided between the dehumidifying condenser (5) and the electric auxiliary heating wire (8). The room is equipped with a defrosting fan (6) and an electrically controlled cold air inlet door (7). A dense circulating fan (13) is installed above the heating condenser (12). A tobacco curing chamber is located on the left side of the heating chamber. The heating chamber is connected to the tobacco curing chamber. The upper connection between the heating chamber and the tobacco curing chamber is the hot air outlet (14) of the curing chamber. The lower connection between the heating chamber and the tobacco curing chamber is the return air inlet (18) of the curing chamber. A tobacco loading door (17) is installed inside the left wall of the tobacco curing chamber. An outdoor rain shelter (19) is installed on the upper side of both the tobacco curing chamber and the heating chamber. A tobacco hanging mechanism is installed inside the tobacco curing chamber. The tobacco hanging mechanism includes a partition wall (15), a conveyor belt (20), a turntable (21), a rotating ring (22), and a main rotating component (23). The flue is equipped with a rotating shaft (24), a driven component (25), a deflecting rod (26), a cross rod (27), a lever (28), and a contact component (29). The walls on the left and right sides of the flue are partition walls (15). A conveyor belt (20) is fixedly installed inside the partition wall (15). Turntables (21) are rotatably installed on the opposite sides of the conveyor belts (20) on the left and right sides. A rotating ring (22) is rotatably installed on the side of the turntable (21). A main rotating component (23) is fixedly installed on the opposite sides of the rotating rings (22) on the left and right sides. A rotating shaft (24) is rotatably installed on the side of the turntable (21) located inside the rotating ring (22). A driven component (25) is fixedly installed on the opposite sides of the rotating shafts (24) on the left and right sides. The main rotating component (23) and the lower side of the slave rotating component (25) are both axially equidistantly fixed with deflection rods (26). The main rotating component (23) and the slave rotating component (25) are both installed with cross rods (27) on their opposite sides, so that the main rotating component (23) and the slave rotating component (25) rotate relative to each other. The upper side of the main rotating component (23) is fixedly installed with a lever (28). The upper position of the conveyor belt (20) is installed with a contact (29). The contact (29) is fixedly connected with the partition wall (15). When the conveyor belt (20) drives the turntable (21) to move to a position close to the contact (29), the lever (28) contacts the contact (29). The conveyor belt (20) is set at an inclined angle. When the dehumidifying evaporator (4), dehumidifying condenser (5) and compressor one (10) are running, the heated air circulates in the heating chamber and the tobacco curing chamber and comes into contact with the tobacco, causing the moisture inside the tobacco to evaporate and be carried by the above-mentioned circulating airflow into the dehumidifying evaporator (4), dehumidifying condenser (5) and compressor one (10), so that the above-mentioned moisture is converted into condensate (3), and finally discharged into the outside environment through the electric control exhaust door (2) of the curing room.

2. The air-source heat pump tobacco roasting equipment according to claim 1, characterized in that: The cross bar (27) consists of two bars arranged in a cross configuration. One bar is movably connected to the upper part of the side of the main rotating component (23) and the lower part of the side of the secondary rotating component (25), while the other bar is movably connected to the lower part of the side of the main rotating component (23) and the upper part of the side of the secondary rotating component (25).

3. The air-source heat pump tobacco roasting equipment according to claim 1, characterized in that: There is a gap between the main transfer component (23) and the slave transfer component (25).

4. The air-source heat pump tobacco roasting equipment according to claim 3, characterized in that: After the lever (28) leaves the contact (29), the deflector (26) and the tobacco are quickly reset by their own gravity, causing the tobacco to fan.

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