A moisture-removing and aroma-preserving device for tobacco leaves

Abstract

This utility model proposes a dehumidification and aroma preservation device for tobacco leaves, including a drying device, a conveying device, and a dehumidification and aroma preservation device. A drying chamber is formed within the drying device, and the conveying device is located within the drying chamber for conveying tobacco leaves. A first partition is provided within the drying chamber to divide it into a drying zone and a rehumidification zone. The dehumidification and aroma preservation device includes a humid hot air exhaust pipe, a hot air recovery pipe, a water vapor recovery pipe, and a water vapor separation chamber. The air inlet of the humid hot air exhaust pipe is connected to the drying zone. The recycling of hot air and water vapor avoids the loss of both, and because the aroma of the tobacco leaves is lost to the exhaust hot air and water vapor during the roasting process, the lost aroma is reabsorbed and returned to the tobacco leaves, thus preserving the aroma.

Description

Technical Field

[0001] This utility model relates to the field of tobacco technology, specifically to a device for dehumidifying and preserving the aroma of tobacco leaves. Background Technology

[0002] In existing tobacco curing equipment, the aroma of the tobacco leaves is lost during the curing process along with the heat and moisture. As a result, the original aroma of the tobacco leaves is lost after curing, making it difficult to retain the original aroma of the tobacco leaves. Utility Model Content

[0003] This utility model addresses one of the problems existing in the prior art to a certain extent. Therefore, one objective of this utility model is to provide a tobacco leaf dehumidification and aroma preservation device to reduce the loss of tobacco leaf aroma and preserve the aroma of tobacco leaves.

[0004] A dehumidification and aroma preservation device for tobacco leaves includes a drying device, a conveying device, and a dehumidification and aroma preservation device. A drying chamber is formed within the drying device. The conveying device is located within the drying chamber and is used to convey tobacco leaves. A first partition is provided within the drying chamber to divide it into a drying zone and a rehumidification zone. The dehumidification and aroma preservation device includes a humid air exhaust pipe, a hot air recovery pipe, a water vapor recovery pipe, and a water vapor separation chamber. The air inlet of the humid air exhaust pipe is connected to the drying zone, and the air outlet of the humid air exhaust pipe is connected to the water vapor separation chamber. The water inlet of the water vapor recovery pipe is connected to the water vapor separation chamber, and the water outlet of the water vapor recovery pipe is connected to the rehumidification zone. The air inlet of the hot air recovery pipe is connected to the water vapor separation chamber, and the air outlet of the hot air recovery pipe is connected to the drying zone.

[0005] As a further improvement of this utility model, a second partition is provided in the drying chamber. The second partition divides the drying area into a main drying area and a cooling area. The main drying area, the cooling area and the rehumidification area are connected in sequence. The air inlet of the hot and humid air exhaust pipe is connected to the main drying area and / or the cooling area.

[0006] As a further improvement of this utility model, a first through hole is provided on the first partition plate, and a second through hole is provided on the second partition plate. The transmission device enters the cooling zone from the main drying zone through the first through hole, and the transmission device enters the rehumidification zone from the cooling zone through the second through hole.

[0007] As a further improvement of this utility model, a filter chamber is provided on the water vapor recovery pipe, and a filter structure is provided inside the filter chamber.

[0008] As a further improvement of this utility model, a water tank is provided on the water vapor recovery pipe, which can store the water entering the water vapor recovery pipe.

[0009] As a further improvement of this utility model, the water outlet of the water vapor recovery pipe extends into the rehumidification zone, and an outlet is provided at the water outlet of the water vapor recovery pipe. An atomizing nozzle is provided at the outlet, and the atomizing nozzle faces the transmission device.

[0010] As a further improvement of this utility model, a booster pump is provided on the water vapor recovery pipe, and the booster pump is located between the water tank and the outlet of the water vapor recovery pipe.

[0011] As a further improvement of this utility model, an air impurity removal filter chamber is provided on the hot air recovery pipe.

[0012] As a further improvement of this utility model, the outlet end of the hot air recovery pipe extends into the drying area, and a heat sink and a fan are also provided at the outlet end of the hot air recovery pipe.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. This utility model proposes a dehumidification and aroma preservation device for tobacco leaves. The recycling of hot air and water vapor avoids the loss of hot air and water vapor. Since the aroma of tobacco leaves is lost into the exhaust hot air and water vapor during the baking process, the aroma lost in the hot air and water vapor will be restored to the tobacco leaves due to the recycling of hot air and the recovery of water vapor, thus preserving the aroma of tobacco leaves. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a tobacco dehumidification and aroma preservation device in one embodiment;

[0016] Figure 2 This is a schematic diagram of the drying device in the embodiment;

[0017] Figure 3 This is a schematic diagram of the dehumidification and fragrance preservation device in the embodiment. Detailed Implementation

[0018] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0019] like Figure 1-3A dehumidification and aroma preservation device for tobacco leaves includes a drying device 1, a conveying device 2, and a dehumidification and aroma preservation device 4. A drying chamber 11 is formed in the drying device 1. The conveying device 2 is located in the drying chamber 11 and is used to convey tobacco leaves. A first partition 21 is provided in the drying chamber 11 to divide the drying chamber 11 into a drying zone 30 and a rehumidification zone 33. The dehumidification and aroma preservation device 4 includes a humid and hot air exhaust pipe 41, a hot air recovery pipe 42, a water vapor recovery pipe 43, and a water vapor separation chamber 44.

[0020] The inlet of the humid air exhaust pipe 41 is connected to the drying zone 30, the outlet of the humid air exhaust pipe 41 is connected to the water vapor separation chamber 44, the inlet of the water vapor recovery pipe 43 is connected to the water vapor separation chamber 44, and the outlet of the water vapor recovery pipe 43 is connected to the rehumidification zone 33. The inlet of the hot air recovery pipe 42 is connected to the water vapor separation chamber 44, and the outlet of the hot air recovery pipe 42 is connected to the drying zone 30.

[0021] This invention proposes a dehumidification and aroma preservation device for tobacco leaves. The tobacco leaves enter the drying chamber 11 through the conveying device 2. The drying device 1 heats, dries, and re-dries the tobacco leaves. During the drying process, humid air enters the hot and humid air exhaust pipe 41 and is separated into water vapor by the water vapor separation chamber 44. The water vapor after separation flows back to the rehumidification zone 33 through the water vapor recovery pipe 43. By controlling the spraying of water vapor in the rehumidification zone 33, some water vapor is sprayed onto the tobacco leaves through the water vapor recovery pipe 43 to control the humidity of the tobacco leaves within a suitable range. The hot air after water vapor separation flows back into the drying zone 30 to recycle the hot air and avoid heat loss.

[0022] The recycling of hot air and water vapor avoids the loss of both. As the aroma of tobacco leaves is lost into the exhaust heat and water vapor during the roasting process, the aroma lost in the hot air and water vapor is returned to the tobacco leaves through the recycling of hot air and water vapor, thus preserving the aroma of the tobacco leaves.

[0023] A second partition 22 is also provided in the drying chamber 11. The second partition 22 divides the drying area 30 into a first drying area 31 and a first cooling area 32. The first drying area 31, the first cooling area 32 and the rehumidification area 33 are connected in sequence. The air inlet of the hot and humid air exhaust pipe 41 is connected to the first drying area 31 and / or the first cooling area 32.

[0024] In this embodiment, the air inlet of the hot and humid air exhaust pipe 41 is connected to the first drying zone 31 and the first cooling zone 32.

[0025] In this embodiment, the drying device 1 consists of, from left to right, a first drying zone 31, a first cooling zone 32, and a rehumidification zone 33. The tobacco leaf conveying device 2 carries the tobacco leaves from left to right through the drying device 1.

[0026] In this embodiment, the first drying zone 31 is mainly used to heat and bake the tobacco leaves, so the moisture in the tobacco leaves will be dispersed with the air and enter the hot and humid air exhaust pipe 41.

[0027] In this embodiment, the air inlet of the hot and humid air exhaust pipe 41 is connected to the top of the first drying zone 31 and the top of the first cooling zone 32.

[0028] In this embodiment, hot air is blown out in the first drying zone 31 to bake and heat the tobacco leaves; however, hot air is not blown out in the first cooling zone 32 to continue heating and baking the tobacco leaves. Instead, residual heat or heat transfer from the first drying zone 31 is used to bring the first cooling zone 32 to a certain temperature, and the residual heat or heat transfer is used to act on the tobacco leaves to avoid over-baking. At this time, the temperature of the tobacco leaves will also drop to a certain extent.

[0029] A first through hole 211 is provided on the first partition 21, and a second through hole 221 is provided on the second partition 22. The conveying device 2 enters the first drying zone 31 and the first cooling zone 32 through the second through hole 221, and the conveying device 2 enters the rehumidification zone 33 through the first cooling zone 32 through the first through hole 211. In this embodiment, the second partition 22 is located between the first drying zone 31 and the first cooling zone 32. The first partition 21 is located between the first cooling zone 32 and the rehumidification zone 33. The drying chamber 11 is divided into three regions by the first partition 21 and the second partition 22.

[0030] In this embodiment, the transmission device 2 includes a transmission belt with mesh holes.

[0031] In this embodiment, the outlet of the hot air recovery pipe 42 connects to the first drying zone 31 at the lower end of the first drying zone 31. Hot air flows from bottom to top through the mesh on the conveyor belt and acts on the tobacco leaves on the conveyor belt.

[0032] A water filtration chamber 431 is provided on the water vapor recovery pipe 43, and a first filtration structure is provided in the water filtration chamber 431.

[0033] In this embodiment, a first filter structure is provided in the water filtration chamber 431, and the first filter structure includes one or more filter screens.

[0034] A water tank 432 is provided on the water vapor recovery pipe 43, which can store the water entering the water vapor recovery pipe 43. Water vapor passes through the water filtration chamber 431, and the filtered water enters the water tank 432 for storage.

[0035] The water outlet of the water vapor recovery pipe 43 extends into the rehumidification zone 33. A water outlet 434 is provided at the water outlet of the water vapor recovery pipe 43, and an atomizing nozzle is provided at the water outlet 434, with the atomizing nozzle facing the transmission device 2.

[0036] A booster pump 433 is provided on the water vapor recovery pipe 43, and the booster pump 433 is located between the water tank 432 and the outlet 434 of the water vapor recovery pipe 43.

[0037] A booster pump 433 is provided between the water outlet of the water vapor recovery pipe 43 and the water tank 432. The water in the water tank 432 can be drawn out by the booster pump 433 and sprayed out through the atomizing nozzle at the water outlet 434.

[0038] In this embodiment, the water outlet of the water vapor recovery pipe 43 extends into the rehumidification zone 33 and is located below the transmission device 2. The water outlet 434 is on the water vapor recovery pipe 43 and faces the transmission device 2 to spray water vapor onto the tobacco leaves of the transmission device 2.

[0039] In some embodiments, a first temperature detector and a first humidity detector are provided in the drying zone 30; a second temperature detector and a second humidity detector are provided in the cooling zone; and a third temperature detector and a third humidity detector are provided in the rehumidification zone 33.

[0040] In some embodiments, a controller is further included, which is electrically connected to the first temperature detector, the first humidity detector, the second temperature detector, the second humidity detector, the third temperature detector, and the third humidity detector, respectively.

[0041] In some embodiments, the first preset humidity of the drying zone 30 is controlled to be 12-18%, the second preset humidity of the cooling zone is controlled to be 7-10%, and the third preset humidity of the rehumidification zone 33 is controlled to be 11-13%.

[0042] In this embodiment, the humidity of the drying zone 30 is controlled at 15%, the humidity of the cooling zone is controlled at 9%, and the humidity of the rehumidification zone 33 is controlled at 12%.

[0043] In some embodiments, the humidity of the rehumidification zone 33 is detected by a third humidity detector. When the detected humidity is lower than a third preset humidity level of the rehumidification zone 33, water is sprayed from the nozzle at the water outlet to increase the humidity in the rehumidification zone. When the detected humidity is higher than the third preset humidity level of the rehumidification zone 33, the water outlet is stopped spraying water or the water volume is reduced to decrease the humidity in the rehumidification zone. Effective control of the humidity in the rehumidification zone can effectively control the rehumidification degree of the tobacco leaves.

[0044] An air purification and filtration chamber 421 is provided on the hot air recovery pipe 42. In this embodiment, a second filter structure is provided in the air purification and filtration chamber 421. The second filter structure includes one or more filter screens, which are arranged vertically. After the air is filtered by the filter screen, it is discharged into the drying zone 30. Since the air also has a high heat content, the waste heat can be effectively recovered and utilized, avoiding the discharge of a large amount of waste heat.

[0045] The outlet end of the hot air recovery pipe 42 extends into the drying zone 30, and a heat sink and a fan are also provided at the outlet end of the hot air recovery pipe 42.

[0046] In this embodiment, the air inlet of the fan faces the hot air recovery pipe 42, and the air outlet of the fan faces the heat sink and the drying zone 30. The fan blows air out, which passes through the heat sink and then into the drying zone 30. Air that originally contained residual heat can be cooled by the heat sink and then blown into the drying zone 30.

[0047] The conveying device 2 includes a conveyor belt with a mesh structure, the diameter of which is smaller than the size of the tobacco leaves. The mesh structure of the conveyor belt helps to transport the tobacco leaves, prevents them from falling, and allows moisture that falls onto the lower part of the conveyor belt to reach the tobacco leaves.

[0048] Tobacco leaves contain aroma-producing components such as ketones, alcohols, aldehydes, lipids, acids, and phenols.

[0049] Experiments showed that before re-drying, the aroma component content in the tobacco leaves was 51.09 ug / g. Without the dehumidification and aroma preservation device 4 on drying device 1, the aroma component content after drying was 40.13 ug / g. With the dehumidification and aroma preservation device 4 added to drying device 1, under the same drying conditions, the aroma component content in the tobacco leaves after drying was 43.56 ug / g. This reduced the loss of aroma components, allowing the tobacco leaves to retain their original aroma.

[0050] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. A moisture removal and flavor preserving device for tobacco leaves, characterized by, The device includes a drying unit, a conveying unit, and a dehumidification and aroma preservation unit. A drying chamber is formed within the drying unit. The conveying unit is located within the drying chamber and is used to convey tobacco leaves. A first partition is provided within the drying chamber to divide it into a drying zone and a rehumidification zone. The dehumidification and aroma preservation unit includes a humid air exhaust pipe, a hot air recovery pipe, a water vapor recovery pipe, and a water vapor separation chamber. The air inlet of the humid air exhaust pipe is connected to the drying zone, and the air outlet of the humid air exhaust pipe is connected to the water vapor separation chamber. The water inlet of the water vapor recovery pipe is connected to the water vapor separation chamber, and the water outlet of the water vapor recovery pipe is connected to the rehumidification zone. The air inlet of the hot air recovery pipe is connected to the water vapor separation chamber, and the air outlet of the hot air recovery pipe is connected to the drying zone.

2. The tobacco moisture removal and flavor preserving device according to claim 1, wherein A second partition is also provided in the drying chamber, which divides the drying area into a main drying area and a cooling area. The main drying area, the cooling area and the rehumidification area are connected in sequence. The air inlet of the hot and humid air exhaust pipe is connected to the main drying area and / or the cooling area.

3. The tobacco moisture removal and flavor preserving device of claim 2, wherein A first through hole is provided on the first partition, and a second through hole is provided on the second partition. The conveying device enters the cooling zone from the main drying zone through the first through hole, and enters the rehumidification zone from the cooling zone through the second through hole.

4. The tobacco moisture removal and flavor preserving device of claim 1, wherein, A filter chamber is provided on the water vapor recovery pipe, and a filter structure is provided inside the filter chamber.

5. The tobacco moisture removal and flavor preserving device of claim 1, wherein, A water tank is provided on the water vapor recovery pipe, which can store the water entering the water vapor recovery pipe.

6. The moisture removal and flavor preserving device for tobacco leaves as claimed in claim 5, wherein, The water vapor recovery pipe extends into the rehumidification zone, and an outlet is provided at the water vapor recovery pipe. An atomizing nozzle is provided at the outlet, and the atomizing nozzle faces the transmission device.

7. The moisture removal and flavor preserving device for tobacco leaves as claimed in claim 6, wherein, A booster pump is installed on the water vapor recovery pipe, and the booster pump is located between the water tank and the outlet of the water vapor recovery pipe.

8. The moisture removal and flavor preserving device for tobacco leaves as claimed in claim 1, wherein, An air impurity removal and filtration chamber is provided on the hot air recovery pipe.

9. The moisture removal and flavor preserving device for tobacco leaves as claimed in claim 1 wherein, The outlet end of the hot air recovery pipe extends into the drying area, and a heat sink and a fan are also provided at the outlet end of the hot air recovery pipe.

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