Energy-saving type tobacco leaf rapid drying machine

Abstract

This utility model discloses an energy-saving dryer for rapid drying of tobacco leaves, including a duct-type electric heater. A drying chamber for holding tobacco leaves is installed on top of the duct-type electric heater. A rotating mechanism is installed inside the drying chamber. The rotating mechanism has a rotating shaft that can drive the tobacco leaves to rotate and a protrusion that can disperse the bottom leaves of the tobacco leaves. This utility model uses the duct-type electric heater in conjunction with an exhaust pipe to deliver heat into the drying chamber to heat the tobacco leaves mounted on the feeding clamp. A motor drives the rotating shaft to rotate, which in turn drives the baffle to rotate, ensuring that the tobacco leaves on the feeding clamp are heated evenly during rotation. Simultaneously, the bottom leaves of the tobacco leaves continuously slap against the protrusion and are dispersed, improving the heating efficiency of the inner layer of the tobacco leaves. During the slapping process, the tobacco leaves vibrate, causing the moisture on the tobacco leaves to evaporate rapidly, improving drying efficiency and reducing energy loss.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco leaf dryers, specifically to an energy-saving dryer for rapid tobacco leaf drying. Background Technology

[0002] Tobacco leaves are the leaves of the tobacco plant and the main raw material for tobacco products. Flue-cured tobacco is currently the most widely cultivated and highest-yielding type of tobacco in the world. Flue-cured tobacco is characterized by its large leaves, which are oblong or oval in shape and range in color from lemon yellow to reddish-brown. After curing, flue-cured tobacco has a rich aroma and a moderate nicotine content, making it the main raw material for cigarettes. Flue-cured tobacco is harvested when the leaves turn yellow, burley tobacco when the leaves turn white, and aromatic tobacco when the leaves turn red. Harvesting is usually done by hand, from bottom to top. Care must be taken to protect the leaves during harvesting to avoid damage and contamination. After harvesting, the tobacco leaves need to be processed promptly, such as by sun-drying and curing, to prevent spoilage.

[0003] Currently, when tobacco leaves are dried in a dryer, the leaves are suspended inside the dryer. The outer leaves heat up quickly, while the inner leaves, due to the layers of outer leaves being attached together, have poor internal heating efficiency, which affects the drying time.

[0004] Therefore, an energy-saving dryer for rapid tobacco drying was proposed to solve the above problems. Utility Model Content

[0005] 1. Technical problem to be solved by the utility model In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an energy-saving dryer for rapid drying of tobacco leaves. It aims to solve the problem that when tobacco leaves are dried in the existing dryer, the outer leaves are heated quickly, while the inner leaves have poor internal heating efficiency due to the layers of outer leaves being attached to each other, which affects the drying time.

[0006] 2. Technical Solution To achieve the above objectives, this utility model provides the following technical solution: An energy-saving dryer for rapid drying of tobacco leaves includes a duct-type electric heater. A drying chamber for placing tobacco leaves is installed on the top of the duct-type electric heater. A rotating mechanism is installed inside the drying chamber. The rotating mechanism is equipped with a rotating shaft that can drive the tobacco leaves to rotate and a protrusion that can separate the bottom leaves of the tobacco leaves.

[0007] As a preferred embodiment of this utility model, exhaust pipes are connected to both sides of the air duct type electric heater, and one end of each exhaust pipe is connected to one side of the drying box. Air vents are symmetrically installed on both sides of the interior of the drying box, and several air vents are installed on the air vents. The air vents are connected to the exhaust pipes and are installed at a downward angle.

[0008] As a preferred embodiment of this utility model, a dustproof net is installed on the inner side of the drying oven, and the top air outlet of the air duct type electric heater inputs heat into the drying oven through the dustproof net.

[0009] As a preferred embodiment of this utility model, an exhaust pipe communicating with the interior of the drying oven is installed at the top center of the drying oven, and an electrically controlled valve is installed on the outer ring surface of the exhaust pipe at the top of the drying oven. Humidity sensors are installed on the inner side of the drying oven and the inner wall of the exhaust pipe.

[0010] As a preferred embodiment of this utility model, a support plate is installed on the rotating mechanism, and connecting frames are symmetrically installed at both ends of the support plate. One end of the connecting frame is fixedly connected to the inner side of the drying box. A motor is installed at the top center of the support plate, and protrusions are evenly installed on the top of the support plate. Other positions on the top of the support plate are opened in a honeycomb mesh shape. The rotating shaft is installed on the top of the motor, and a baffle is installed on the top of the rotating shaft. Feeding clamps for clamping the root stems of tobacco leaves are evenly installed at the bottom of the baffle.

[0011] As a preferred embodiment of this utility model, a sleeve is installed on the top of the baffle, and the baffle is sleeved on the rotating shaft through the sleeve and tightened and fixed by bolts.

[0012] 3. Beneficial effects Compared with the prior art, the beneficial effects of this utility model are: This invention uses a duct-type electric heater in conjunction with an exhaust pipe to deliver heat into the drying chamber to heat the tobacco leaves mounted on the feeding clamp. A motor drives a rotating shaft, which in turn drives a baffle to rotate, ensuring that the tobacco leaves on the feeding clamp are heated evenly during rotation. At the same time, the bottom blades of the tobacco leaves continuously pat against the protrusions and are dispersed, improving the heating efficiency of the inner layer of the tobacco leaves. During the patting process, the tobacco leaves vibrate, causing the moisture on the tobacco leaves to evaporate quickly, thus improving drying efficiency and reducing energy loss. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the energy-saving tobacco leaf rapid drying dryer of this utility model; Figure 2 This is a schematic diagram of the drying box structure of the energy-saving tobacco leaf rapid drying dryer of this utility model; Figure 3 This is a schematic diagram of the rotating mechanism of the energy-saving tobacco leaf drying machine of this utility model.

[0014] In the diagram: 1. Duct-type electric heater; 11. Exhaust pipe; 2. Drying oven; 21. Exhaust pipe; 22. Electrically controlled valve; 23. Dustproof net; 24. Exhaust hood; 25. Humidity sensor; 3. Rotating mechanism; 31. Support plate; 32. Connecting frame; 33. Protrusion; 34. Motor; 35. Rotating shaft; 36. Baffle; 37. Feeding clamp. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Example: Please see Figure 1-3 This embodiment provides an energy-saving dryer for rapid drying of tobacco leaves, including a duct-type electric heater 1. A drying chamber 2 for placing tobacco leaves is installed on the top of the duct-type electric heater 1. A rotating mechanism 3 is installed inside the drying chamber 2. The rotating mechanism 3 is equipped with a rotating shaft 35 that can drive the tobacco leaves to rotate and a protrusion 33 that can disperse the bottom leaves of the tobacco leaves. The rotating shaft 35 drives the tobacco leaves to rotate, and during the rotation, the bottom leaves of the tobacco leaves are continuously dispersed by the protrusion 33, thereby rapidly heating the inside of the tobacco leaves and reducing the drying time.

[0017] In this embodiment, as Figure 1 and Figure 2 As shown, exhaust pipes 11 are connected to both sides of the duct-type electric heater 1. One end of each exhaust pipe 11 is connected to one side of the drying chamber 2. Air vents 24 are symmetrically installed on both sides of the interior of the drying chamber 2. Several air vents are installed on the air vents 24. The air vents 24 are connected to the exhaust pipes 11. The air vents 24 are installed at a downward 30° angle. Hot air enters the exhaust pipes 11 and then enters the interior of the air vents 24, and is discharged through the air vents. Since the air vents 24 are installed at an angle, the heat blown out from the top of the air vents 24 has a larger contact area with the tobacco leaves, resulting in faster heating efficiency.

[0018] In this embodiment, as Figure 1 and Figure 2As shown, an exhaust pipe 21 communicating with the interior of the drying chamber 2 is installed at the top center of the drying chamber 2. An electric control valve 22 is installed on the outer ring surface of the exhaust pipe 21 at the top of the drying chamber 2. Humidity sensors 25 are installed on the inner side of the drying chamber 2 and the inner wall of the exhaust pipe 21. The humidity sensor 25 inside the drying chamber 2 monitors the drying degree of the tobacco leaves and shuts off the heater in time, while the humidity sensor 25 in the exhaust pipe 21 is used to monitor the humidity in the flue gas. When the humidity reaches the set value, the electric control valve 22 automatically opens, and vice versa, thereby preventing the premature loss of heat inside the drying chamber 2, causing the temperature inside the drying chamber 2 to rise rapidly and reducing energy consumption.

[0019] In this embodiment, as Figure 1 and Figure 3 As shown, a support plate 31 is installed on the rotating mechanism 3. Connecting frames 32 are symmetrically installed at both ends of the support plate 31. One end of the connecting frame 32 is fixedly connected to the inner side of the drying chamber 2. A motor 34 is installed at the top center of the support plate 31. Protrusions 33 are evenly installed on the top of the support plate 31. Other positions on the top of the support plate 31 are all opened in a honeycomb mesh shape. A rotating shaft 35 is installed on the top of the motor 34. A baffle 36 is installed on the top of the rotating shaft 35. Feeding clamps 37 for clamping the root and stem of the tobacco leaves are evenly installed at the bottom of the baffle 36. The root and stem of the tobacco leaves are clamped on the feeding clamps 37 and inverted. The motor 34 drives the rotating shaft 35 to rotate, so that the baffle 36 drives the tobacco leaves to be heated during the rotation. At the same time, the bottom of the tobacco leaves will beat the protrusions 33, so that the bottom leaves of the tobacco leaves are dispersed to facilitate heating. At the same time, the vibration generated during the beating process allows the moisture in the tobacco leaves to be evaporated quickly, improving drying efficiency and reducing energy loss.

[0020] In this embodiment, as Figure 3 As shown, a sleeve is installed on the top of the baffle 36. The baffle 36 is sleeved on the rotating shaft 35 through the sleeve and tightened and fixed by bolts. When the bolts are loosened, the height of the baffle 36 can be adjusted to accommodate tobacco leaves of different lengths.

[0021] Working Principle: In operation, this rapid-drying and energy-saving tobacco dryer first introduces hot air into the exhaust pipe 11 and then into the exhaust hood 24, exiting through the exhaust holes. The exhaust hood 24 is installed at an angle, resulting in a larger contact area between the heat blown from top to bottom and the tobacco leaves, leading to faster heating efficiency. A humidity sensor 25 inside the drying chamber 2 monitors the drying degree of the tobacco leaves and promptly shuts off the heater. Meanwhile, a humidity sensor 25 inside the exhaust pipe 21 monitors the humidity in the flue gas; when the humidity reaches the set value, the electronically controlled valve 22 automatically opens. When the drying chamber 2 is turned on, the electric control valve 22 is turned off, thus preventing premature heat loss from the inside of the drying chamber 2 and allowing the temperature inside the drying chamber 2 to rise rapidly, reducing energy consumption. The root and stem positions of the tobacco leaves are clamped on the feeding clamp 37 and inverted. The motor 34 drives the rotating shaft 35 to rotate, so that the baffle 36 heats the tobacco leaves during the rotation. At the same time, the bottom of the tobacco leaves will beat the protrusions 33, which will disperse the bottom leaves of the tobacco leaves to facilitate heating. At the same time, the vibration generated during the beating process will allow the moisture in the tobacco leaves to evaporate quickly, improving drying efficiency and reducing energy loss.

[0022] All technical features in this embodiment can be freely combined according to actual needs.

[0023] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A tobacco leaf quick drying energy-saving type dryer comprising an air duct type electric heater (1), characterized in that: The top of the air duct type electric heater (1) is equipped with a drying box (2) for placing tobacco leaves. The drying box (2) is equipped with a rotating mechanism (3). The rotating mechanism (3) is equipped with a rotating shaft (35) that can drive the tobacco leaves to rotate and a protrusion (33) that can separate the bottom leaves of the tobacco leaves.

2. The rapid drying and energy-saving dryer for tobacco leaves according to claim 1, characterized in that: The air duct type electric heater (1) is connected to exhaust pipes (11) on both sides. One end of each exhaust pipe (11) is connected to one side of the drying box (2). The drying box (2) is symmetrically installed with air vents (24) on both sides inside. The air vents (24) are equipped with several air vents. The air vents (24) are connected to the exhaust pipes (11) and are installed at a downward 30° angle.

3. The rapid drying and energy-saving dryer for tobacco leaves according to claim 1, characterized in that: The drying box (2) is equipped with a dustproof net (23) on the inside. The top air outlet of the air duct type electric heater (1) inputs heat into the drying box (2) through the dustproof net (23).

4. The rapid drying and energy-saving dryer for tobacco leaves according to claim 1, characterized in that: An exhaust pipe (21) communicating with the interior of the drying box (2) is installed at the top center of the drying box (2). An electric control valve (22) is installed on the outer ring surface of the exhaust pipe (21) at the top of the drying box (2). Humidity sensors (25) are installed on the inner side of the drying box (2) and the inner wall of the exhaust pipe (21).

5. The rapid drying and energy-saving dryer for tobacco leaves according to claim 1, characterized in that: A support plate (31) is installed on the rotating mechanism (3). Connecting frames (32) are symmetrically installed at both ends of the support plate (31). One end of the connecting frame (32) is fixedly connected to the inner side of the drying box (2). A motor (34) is installed at the top center of the support plate (31). The protrusions (33) are evenly installed on the top of the support plate (31). The other positions on the top of the support plate (31) are all opened in a honeycomb mesh shape. The rotating shaft (35) is installed on the top of the motor (34). A baffle (36) is installed on the top of the rotating shaft (35). A feeding clamp (37) for clamping the root and stem of the tobacco leaves is evenly installed at the bottom of the baffle (36).

6. The energy-saving tobacco leaf rapid drying machine according to claim 5, characterized in that: A sleeve is installed on the top of the baffle (36), and the baffle (36) is sleeved on the rotating shaft (35) and tightened and fixed by bolts.

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