Cut tobacco circulating dryer

Abstract

The utility model discloses a cut tobacco circulating dryer which comprises a drying transmission channel, an input end gear set and an output end gear set are arranged at the front end and the rear end of the drying transmission channel respectively, the input end gear set and the output end gear set are each composed of a driving gear and a driven gear, and the two driving gears are connected through a rotating shaft. The two driven gears are connected through another rotating shaft, spiral blades are arranged on the peripheries of the two rotating shafts, and spiral gaps of the adjacent spiral blades are distributed in a staggered mode. The head end of the drying conveying channel is provided with a tobacco shred feeding port and a hot air inlet, the tail end of the drying conveying channel is provided with a tobacco shred discharging port and a hot air outlet, tobacco shred enters from the tobacco shred feeding port and is output from the tobacco shred discharging port, the hot air inlet is communicated with heated air, and the hot air outlet is used for discharging redundant air in the drying conveying channel. Through extrusion and rolling effects of the spiral blades, tobacco shreds are ensured to be uniformly dried, meanwhile, the energy utilization rate is improved through a circulating heating system, and the drying process is more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco, in particular to a tobacco shred circulation dryer. Background Art

[0002] The tobacco dryer is a device used for processing tobacco, mainly used to dry freshly picked tobacco leaves for subsequent processing and production. The tobacco dryer gradually evaporates the moisture in the tobacco leaves by controlling parameters such as temperature, humidity and ventilation, so that it reaches a dryness suitable for processing. The working principle of the tobacco dryer is usually to use a hot air circulation system to pass hot air through the tobacco leaf accumulation area to evaporate the moisture on the surface of the tobacco leaves. At the same time, the air containing moisture is discharged through the exhaust system to maintain the drying effect. This can effectively control the drying speed and quality of the tobacco leaves, ensuring that the final quality of the tobacco meets the requirements.

[0003] The problem with tobacco dryers in the prior art is that when hot air is used to dry tobacco, the moisture in the inner layer of the tobacco cannot be directly blown away by the hot air, resulting in a long drying time and high energy consumption. The prior art mainly addresses this problem by optimizing the design of the hot air circulation system so that the hot air can cover the surface and inner layer of the tobacco more evenly, improve the contact efficiency between the hot air and the tobacco, and reduce the drying time. In the prior art, more complex hot air flow paths are designed, and the hot air can be more fully penetrated into the inner layer of the tobacco by changing the flow direction and speed of the hot air, thereby improving the drying efficiency. This results in a complex equipment structure, which not only has high equipment use and maintenance costs, but also poor drying effects. For example, in addition to the fact that the moisture in the tobacco dryer cannot be directly blown away by the hot air, resulting in a long drying time, the tobacco may be partially over-dried and partially under-dried during the drying process, resulting in unstable tobacco quality. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tobacco circulation dryer, which overcomes the above-mentioned defects of the prior art, improves drying efficiency, saves energy, ensures uniform drying, simplifies structure, improves production efficiency and improves product quality.

[0005] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0006] A tobacco circulation dryer comprises a drying transmission channel,

[0007] The front and rear ends of the drying transmission channel are respectively provided with an input end gear set and an output end gear set, and the input end gear set and the output end gear set are both composed of a driving gear and a driven gear that mesh with each other, the two driving gears are connected by a rotating shaft, and the two driven gears are connected by another rotating shaft, and spiral blades are rotatably welded on the outer circumferences of the two rotating shafts, and the spiral gaps of adjacent spiral blades are staggered.

[0008] The head end of the drying transmission channel is provided with a tobacco feed port and a hot air inlet, and the tail end of the drying transmission channel is provided with a tobacco discharge port and a hot air outlet. Tobacco enters from the tobacco feed port and is discharged from the tobacco discharge port. The hot air inlet is connected to the heated air, and the hot air outlet is used to discharge excess air in the drying transmission channel.

[0009] Preferably, in the above technical solution, the circulating heating system includes a heating cabinet, in which a blower, a heating box and a drying box are arranged, the output end of the blower is connected to the heating box, the air outlet of the heating box is connected to the hot air inlet to introduce hot air, the hot air outlet is connected to the drying box, and the outlet of the drying box is connected to the inlet end of the blower through an air duct, thereby realizing circulation.

[0010] Preferably, in the above technical solution, the tobacco circulation dryer further comprises: a motor, which is arranged at the front end of the drying transmission channel, and the motor is used to drive the rotation of the driving gear.

[0011] Preferably, in the above technical solution, sorting equipment racks are fixedly provided at the bottom of the input end gear set and the output end gear set respectively.

[0012] Preferably, in the above technical solution, the spiral blades are connected to the rotating shaft by welding.

[0013] Preferably, in the above technical solution, the shredded tobacco feed port is arranged at the upper part of the head end of the drying and transporting channel, and the shredded tobacco discharge port is arranged at the lower part of the tail end of the drying and transporting channel.

[0014] Preferably, in the above technical solution, a filter is installed inside the hot air outlet.

[0015] The above technical solution of the utility model has the following beneficial effects:

[0016] The present application uses the design of spiral blades to squeeze and tumble tobacco during the transmission process, effectively squeezing the moisture in the tobacco to the surface, thereby accelerating the drying process of the tobacco. Through the design of spiral blades, the tobacco shreds are constantly tumbling during the transmission process, ensuring that the tobacco shreds are dried more evenly and avoiding local insufficient or excessive drying. By accelerating the drying process of the tobacco shreds, production efficiency can be improved, production cycle can be shortened, and output can be increased. The characteristics of uniform and rapid drying help maintain the quality of the tobacco shreds and avoid quality problems caused by uneven humidity or incomplete drying.

[0017] The present application adopts a circulating heating method, which improves energy utilization and reduces energy consumption by circulating heated air in the heating system. The design is relatively simple and stable, reduces the possibility of system failure, and improves the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of the tobacco circulating desiccant of the utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the tobacco circulating desiccant of the utility model;

[0021] Figure 3 It is a schematic diagram of the assembly relationship between the gear combination, the spiral shaft and the spiral blade;

[0022] Figure 4 yes Figure 3 Schematic diagram of the internal structure.

[0023] In the figure: 1-sorting equipment frame; 2-input end gear set; 3-output end gear set; 4-drying transmission channel; 5-tobacco feed port; 6-tobacco discharge port; 7-hot air inlet; 8-hot air outlet; 9-motor; 10-rotating shaft; 11-spiral blade; 12-driving gear; 13-driven gear. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0025] like Figure 1 and Figure 2As shown, a tobacco circulation dryer mainly includes: a sorting equipment frame 1, an input end gear group 2, an output end gear group 3, a drying transmission channel 4, a tobacco feed port 5, a tobacco discharge port 6, a hot air inlet 7, a hot air outlet 8 and a motor 9, etc.

[0026] Specifically, an input end gear group 2 and an output end gear group 3 are respectively installed at the front and rear ends of the drying transmission channel 4, and a sorting equipment frame 1 is fixedly installed at the bottom of the input end gear group 2 and the output end gear group 3, respectively. A tobacco feed port 5 is installed at the upper part of the head end of the drying transmission channel 4, and a tobacco discharge port 6 is installed at the lower part of the tail end of the drying transmission channel 4. The tobacco enters from the tobacco feed port 5 and is output from the tobacco discharge port 6.

[0027] A hot air inlet 7 is installed at the head end of the drying transmission channel 4, and a hot air outlet 8 is installed at the tail end of the drying transmission channel 4. A filter is installed in the hot air outlet 8. The heated air is connected to the hot air inlet 7, and the hot air outlet 8 is used to discharge excess air in the drying transmission channel 4.

[0028] like Figure 3 and Figure 4 As shown, a gear set including a mutually meshing driving gear 12 and a driven gear 13 is installed in the input end gear set 2, and a gear set including a mutually meshing driving gear 12 and a driven gear 13 is also installed in the output end gear set 3, a rotating shaft 10 is connected between a pair of driving gears 12, and a rotating shaft 10 is connected between a pair of driven gears 13, and welded spiral blades 11 are respectively arranged on the outside of the two rotating shafts 10. The spiral gaps of adjacent spiral blades 11 are staggered and distributed with each other, so that in the process of tobacco shreds being transported from the inlet box outlet of the drying transmission channel 4, the tobacco shreds will be repeatedly squeezed by the two spiral blades 11, and the moisture contained in the tobacco shreds will be squeezed to the surface of the tobacco shreds. At the same time, since the hot air is discharged from the hot air inlet to the hot air outlet, the moisture on the surface of the tobacco shreds squeezed by pressure is quickly blown away, thereby accelerating the drying efficiency of the tobacco shreds. In the prior art, when the tobacco shreds are dried by hot air, since the moisture in the inner layer of the tobacco shreds cannot be directly blown away by the hot air, it takes a long time to dry and consumes a lot of energy. In the present application, during the process of transmitting the tobacco shreds through the adjacent spiral blades 11, the tobacco shreds are continuously rolled to ensure uniform drying.

[0029] The tobacco circulating desiccant of the present application also includes a circulating heating system (not shown). In order to improve energy utilization, the heating system adopts a circulating heating method, for example, by installing a blower, a heating box and a drying box in the heating cabinet, installing an electric heating device and a thermocouple in the heating box, connecting the output end of the blower to the heating box, introducing the air outlet of the heating box into the hot air inlet 7, and introducing the hot air outlet 8 into the drying box. The desiccant is placed in the drying box, and the outlet of the drying box is connected to the inlet end of the blower through the air duct, thereby realizing circulation.

[0030] The tobacco circulation dryer of the present application, when in use:

[0031] The tobacco enters the channel from the tobacco feed port 5 and is discharged from the tobacco outlet 6 after drying. Hot air enters the drying transmission channel 4 through the hot air inlet 7, and the excess air after drying is discharged through the hot air outlet 8, wherein a filter is installed in the hot air outlet 8.

[0032] The input end gear set 2 and the output end gear set 3 include a driving gear, a driven gear and a rotating shaft. A spiral blade 11 is welded on the outside of the rotating shaft 10 to squeeze the tobacco and accelerate the drying process. The motor 9 is used to drive the driving gear to rotate, thereby driving the driven gear to rotate.

[0033] Circulation heating is achieved through blowers, heating boxes, drying boxes, electric heating devices and thermocouples to improve energy utilization. The tobacco shreds enter the drying transmission channel from the feed port, and after being squeezed by the spiral blades and the action of hot air, the moisture is squeezed to the surface of the tobacco shreds, and then blown away by the hot air to accelerate the drying of the tobacco shreds. The heating system adopts a circulation heating method, and the shreds are dried in a circulation manner through blowers, heating boxes, drying boxes and desiccants to improve energy utilization.

[0034] This design ensures that the tobacco is dried evenly by constantly tumbling it, while the circulating heating system improves energy utilization and makes the drying process more efficient.

[0035] Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various choices and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is limited by the claims and their equivalents.

Claims

1. A tobacco circulating dryer, characterized in that: comprising a dry transmission channel (4), An input end gear set (2) and an output end gear set (3) are respectively provided at the front and rear ends of the drying transmission channel (4); the input end gear set (2) and the output end gear set (3) are both composed of a driving gear (12) and a driven gear (13) meshing with each other; the two driving gears (12) are connected via a rotating shaft (10); the two driven gears (13) are connected via another rotating shaft (10); spiral blades (11) are rotatably welded on the outer circumferences of the two rotating shafts (10); and the spiral gaps of adjacent spiral blades (11) are staggered. The head end of the drying transmission channel (4) is provided with a tobacco feed port (5) and a hot air inlet (7), and the tail end of the drying transmission channel (4) is provided with a tobacco discharge port (6) and a hot air outlet (8). Tobacco enters from the tobacco feed port (5) and is discharged from the tobacco discharge port (6). The hot air inlet (7) is connected to the heated air, and the hot air outlet (8) is used to discharge excess air in the drying transmission channel (4).

2. The tobacco circulating dryer according to claim 1, characterized in that: The tobacco circulation dryer also includes: a circulation heating system, which includes a heating cabinet, in which a blower, a heating box and a drying box are arranged, the output end of the blower is connected to the heating box, the air outlet of the heating box is connected to the hot air inlet (7) to introduce hot air, the hot air outlet (8) is connected to the drying box, and the outlet of the drying box is connected to the inlet end of the blower through an air duct, thereby realizing circulation.

3. The tobacco circulating dryer according to claim 1, characterized in that: The tobacco circulation dryer further comprises: a motor (9) which is arranged at the front end of the drying transmission channel (4), and the motor (9) is used to drive the driving gear (12) to rotate.

4. The tobacco circulating dryer according to claim 1, characterized in that: The bottom of the input end gear group (2) and the bottom of the output end gear group (3) are respectively fixedly provided with a sorting equipment frame (1).

5. The tobacco circulating dryer according to claim 1, characterized in that: The spiral blade (11) and the rotating shaft (10) are connected by welding.

6. The tobacco circulating dryer according to claim 1, characterized in that: The shredded tobacco feed port (5) is arranged at the upper part of the head end of the drying and transporting channel (4), and the shredded tobacco discharge port (6) is arranged at the lower part of the tail end of the drying and transporting channel (4).

7. The tobacco circulating dryer according to claim 1, characterized in that: The hot air outlet (8) is provided with a filter screen inside.

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