Tobacco processing apparatus

Abstract

A tobacco processing apparatus is disclosed. The tobacco processing apparatus includes a loosener and a long-short tobacco separation device. The loosener is configured to loosen tobacco. The long-short tobacco separation device receives the loosened tobacco from the loosener and separates the tobacco into long tobacco and short tobacco. The long-short tobacco separation device includes a vibrating trough and a separation body disposed on the vibrating trough. The separation body includes a plurality of separation pieces spaced apart in a conveying direction. The separation pieces are disposed obliquely with respect to the conveying direction and the oblique angles of the separation pieces are adjustably set. The tobacco is conveyed forward under vibration of the vibrating trough and the short tobacco falls through gaps between adjacent separation pieces. The tobacco processing apparatus of the embodiments improves uniformity of tobacco body density.

Description

TECHNICAL FIELD

[0001] The present application relates to a tobacco processing device. BACKGROUND

[0002] The proportion of medium and slim cigarette products in the market is increasing, and therefore higher requirements are placed on the size of tobacco. If the filament rate of tobacco used to produce medium and slim cigarette products is too high, the long tobacco filaments are prone to form local curling groups in the slim cigarette body with a small circumference, and thus cause the cigarette to become a bamboo joint-like cigarette, which greatly affects the uniformity of the density of the cigarette body.

[0003] Therefore, how to improve the uniformity of the density of the cigarette body is a problem to be solved.

[0004] It should be noted that the statements in this background section merely provide background information related to the present application and do not necessarily constitute prior art. SUMMARY

[0005] The present application provides a tobacco processing device to improve the uniformity of the density of the cigarette body.

[0006] The present application provides a tobacco processing device, comprising:

[0007] a loosening device for loosening the tobacco;

[0008] a long-short filament separation device for receiving the loosened tobacco from the loosening device and separating the long and short tobacco filaments, the long-short filament separation device comprising a vibrating trough and a separation body arranged on the vibrating trough, the separation body comprising a plurality of separation pieces arranged at intervals in the conveying direction, the separation pieces being arranged obliquely with respect to the conveying direction and the oblique angle of the separation pieces being adjustably arranged, the tobacco being conveyed forward under the vibration of the vibrating trough, and the short tobacco filaments falling through the gaps between adjacent separation pieces.

[0009] In some embodiments, the length of the separation body is greater than 2 m so that the thickness of the tobacco on the upper layer of the tail end of the separation body is less than 2 cm.

[0010] In some embodiments, the long-short filament separation device further comprises a flat section arranged upstream of the separation body, the flat section being used to receive the tobacco falling from the loosening device and to lay the tobacco flat.

[0011] In some embodiments, the long-short filament separation device comprises at least two separation bodies arranged in the conveying direction, the heights of the at least two separation bodies being different, and the gap between the at least two separation bodies being closed.

[0012] In some embodiments, the tobacco processing device further comprises a shortening device for receiving the long tobacco filaments output from the separation body and shortening the long tobacco filaments.

[0013] In some embodiments, the cutting device comprises a fixed blade device and a movable blade device, the fixed blade device comprises a fixed blade, and the movable blade device comprises a rotatably arranged movable blade, and the rotation speed of the movable blade is adjustably arranged.

[0014] In some embodiments, the cutting edge of the fixed blade is formed with serrations.

[0015] In some embodiments, the loosening device comprises a feeding roller and a loosening roller, and the rotation speeds of the feeding roller and the loosening roller are adjustably arranged.

[0016] In some embodiments, the tobacco processing device further comprises a controller, and the controller adjusts the rotation speed ratio of the loosening roller and the feeding roller, the vibration frequency of the vibrating trough, the gap between adjacent separating blades, and the inclination angle of the separating blades in sequence according to the parameters of the incoming tobacco.

[0017] In some embodiments, the controller adjusts the rotation speed ratio of the loosening roller and the feeding roller, the vibration frequency of the vibrating trough, the gap between adjacent separating blades, and the inclination angle of the separating blades in sequence according to the separation effect of long and short filaments.

[0018] In some embodiments, after adjusting the rotation speed ratio of the loosening roller and the feeding roller, if the separation of long and short filaments meets the requirements, the vibration frequency of the vibrating trough, the gap between adjacent separating blades, and the inclination angle of the separating blades are no longer adjusted.

[0019] In some embodiments, the tobacco processing device further comprises a bypass device, the bypass device is connected to the loosening device, the bypass device comprises a conveying channel, and the tobacco output by the loosening device can selectively enter the bypass device or the long and short filament separation device.

[0020] Based on the technical scheme provided in the present application, the tobacco processing device comprises a loosening device and a long-short tobacco separation device. The loosening device is used for loosening tobacco. The long-short tobacco separation device receives the loosened tobacco from the loosening device and separates long tobacco from short tobacco. The long-short tobacco separation device comprises a vibrating trough and a separation body arranged on the vibrating trough. The separation body comprises a plurality of separation pieces arranged at intervals in the conveying direction. The separation pieces are arranged obliquely relative to the conveying direction, and the oblique angles of the separation pieces are adjustably arranged. The tobacco is conveyed forward under the vibration of the vibrating trough, and the short tobacco falls through the gaps between adjacent separation pieces. The tobacco processing device of the present application separates long tobacco from short tobacco through the separation body of the long-short tobacco separation device. Specifically, the separation body is provided with a plurality of separation pieces arranged at intervals. The tobacco is conveyed along the conveying direction under the action of the vibrating trough, and the short tobacco falls through the gaps between adjacent separation pieces to the lower side. The long tobacco continues to be conveyed along the conveying direction, thereby effectively separating the long tobacco from the short tobacco. The separated short tobacco can be used when rolling cigarettes, thereby improving the uniformity of the tobacco density. Moreover, the oblique angles of the separation pieces are adjustably arranged, so that the oblique angles of the separation pieces can be adjusted according to the characteristics of the incoming tobacco and the separation effect.

[0021] Other features of the present application, and their advantages, will become apparent in the non-limiting detailed description of exemplary embodiments of the present application described below. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate exemplary embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0023] Figure 1 FIG. 1 is a structural schematic diagram of a tobacco processing device according to an embodiment of the present application.

[0024] Figure 2 FIG. 2 is a structural schematic diagram of a loosening device of the tobacco processing device according to an embodiment of the present application.

[0025] Figure 3 FIG. 3 is a structural schematic diagram of a long-short tobacco separation device of the tobacco processing device according to an embodiment of the present application.

[0026] Figure 4 FIG. 4 is a structural schematic diagram of a separation body of the long-short tobacco separation device according to an embodiment of the present application. Figure 3

[0027] Figure 5 FIG. 5 is a structural schematic diagram of a short tobacco device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] ​The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting on the application or its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0029] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in the embodiments are not intended to limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification under appropriate circumstances. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so further discussion is not needed in subsequent drawings once an item is defined in one drawing.

[0030] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device as described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways, and the spatial relative description used herein is interpreted accordingly.

[0031] As Figure 1As shown, the tobacco processing device provided by the embodiment of the present application comprises a loosener 20 and a long-short tobacco separation device 30. The loosener 20 is used to loosen the tobacco. The long-short tobacco separation device 30 receives the loosened tobacco from the loosener 20 and separates the long tobacco from the short tobacco. The long-short tobacco separation device 30 comprises a vibrating trough 31 and a separation body 32 arranged on the vibrating trough 31. The separation body 32 comprises a plurality of separation pieces 322 arranged at intervals in the conveying direction x. The separation pieces 322 are arranged obliquely relative to the conveying direction x and the oblique angles of the separation pieces 322 are adjustably arranged. The tobacco is conveyed forward under the vibration of the vibrating trough 31 and the short tobacco falls through the gaps between adjacent separation pieces.

[0032] The tobacco processing device of the embodiment of the present application separates the long tobacco from the short tobacco by first loosening the incoming tobacco and then conveying the loosened tobacco to the long-short tobacco separation device 30. The long-short tobacco separation device 30 separates the long tobacco from the short tobacco by the separation body 32. Specifically, the separation body 32 is provided with a plurality of separation pieces 322 arranged at intervals. The tobacco is conveyed along the conveying direction under the action of the vibrating trough and the short tobacco falls through the gaps between adjacent separation pieces to the lower side. The long tobacco continues to be conveyed along the conveying direction, thereby effectively separating the long tobacco from the short tobacco. The separated short tobacco can be used when rolling cigarettes, thereby improving the uniformity of the density of the tobacco body. Moreover, the oblique angles of the separation pieces 322 are adjustably arranged, so that the oblique angles of the separation pieces 322 can be adjusted according to the characteristics of the incoming tobacco and the separation effect.

[0033] The oblique angles of the separation pieces 322 are adjustable, so that the gaps between adjacent two separation pieces 322 are adjustable, thereby being suitable for separating short tobacco of different target lengths.

[0034] As shown, Figure 3 The long-short tobacco separation device 30 further comprises a flat section 33 arranged upstream of the separation body 32. The flat section 33 is used to receive the tobacco falling from the loosener 20 and to lay the tobacco flat.

[0035] The flat section 33 and the separation body 32 are both arranged on the vibrating trough 31. The vibrating trough 31 vibrates at a high frequency to drive the flat section 33 and the separation body 32 to vibrate at a high frequency. The flat section 33 is located upstream of the tobacco conveying direction. The tobacco falling from the loosener 20 first falls on the flat section 33 to be laid flat and then is conveyed to the separation body 32 to be separated into long tobacco and short tobacco. The tobacco is laid flat by the flat section 33, thereby effectively avoiding the accumulation of the tobacco entering the separation body and optimizing the separation effect of the long tobacco and the short tobacco.

[0036] In order to match the flow of tobacco with the size of the separation body 32, the length and width of the separation body 32 are configured according to the flow of tobacco and the thickness of the tobacco layer. Specifically, the thickness of the tobacco is the thickness of the tobacco layer on the tail end of the separation body 32. In a preferred embodiment, the thickness of the tobacco layer on the tail end of the separation body 32 is less than 2 cm. The length of the separation body 32 is greater than 2 m. The length refers to the size in the conveying direction, and the width refers to the size in the direction perpendicular to the conveying direction.

[0037] In order to further avoid the accumulation of tobacco after entering the separation body 32, it is necessary to control the thickness of the tobacco layer before entering the separation body 32. In a preferred embodiment, the thickness of the tobacco layer before entering the separation body 32 should be no more than 5 cm.

[0038] Reference Figure 1 In some embodiments, the tobacco processing device further comprises a shortening device 40. The shortening device 40 is used to receive long tobacco from the separation body 32 and shorten the long tobacco. The tobacco processing device of the present embodiment first separates the long tobacco and the short tobacco using the long-short tobacco separation device 30, and then shortens the long tobacco using the shortening device 40. In this way, the separated short tobacco and the short tobacco formed after shortening can be used to manufacture cigarettes, thereby improving the uniformity of the tobacco density.

[0039] As shown in Figure 1 The tobacco processing device comprises a feeding conveyor belt 10, a loosener 20, a long-short tobacco separation device 30, and a shortening device 40. The feeding conveyor belt 10 is used to convey the incoming tobacco along the conveying direction x. The loosener 20 is arranged below the discharge end of the feeding conveyor belt 10 to loosen the tobacco conveyed by the feeding conveyor belt 10. The loosened tobacco is conveyed forward along the conveying direction x on the long-short tobacco separation device 30, which is used to separate the long tobacco and the short tobacco, wherein the short tobacco falls through the gap between the separation pieces to the lower side, and the long tobacco continues to be conveyed forward along the conveying direction. The long tobacco enters the shortening device 40 after being conveyed to the end for shortening operation.

[0040] The loosener 20 is installed at the discharge port of the conveying belt at the rear end of the long-short tobacco separation device 30. The separation body of the long-short tobacco separation device 30 is installed on a high-frequency vibrating trough, and the shortening device is installed at the discharge port of the separation device. The separation device should leave a certain space from the bottom of the vibrating trough to allow the short tobacco separated by the screen to be conveyed.

[0041] The structure and working process of the long-short tobacco separation device 30, the loosener 20, and the shortening device 40 will be described in detail below.

[0042] As shown in Figure 3As shown, the long and short tobacco separation device 30 comprises a vibrating trough 31 and a separation body 32 arranged on the vibrating trough 31. The separation body 32 comprises a plurality of separation pieces 322 arranged at intervals. The separation pieces 322 are arranged obliquely relative to the conveying direction x and gaps are arranged between adjacent separation pieces. In this way, the cut tobacco is conveyed forward along the separation body 32 under the action of the vibrating trough 31, and in the process of conveying, the short cut tobacco falls down through the gaps, and the long cut tobacco continues to be conveyed forward, thereby realizing effective separation of the long and short cut tobaccos.

[0043] The separation pieces 322 are arranged obliquely relative to the conveying direction x, as shown in the figure. Figure 3 As shown, the angle between the separation piece 322 and the conveying direction x is an acute angle. The inclination angles of the plurality of separation pieces 322 are the same, and the plurality of separation pieces 322 are arranged in parallel at intervals. This arrangement is to make the cut tobacco climb uphill in the process of conveying forward, increase the residence time, and thereby improve the separation effect.

[0044] In order to achieve better separation effect, in some embodiments, the length of the separation body 32 is greater than 2 m.

[0045] In some embodiments, the long and short tobacco separation device 30 comprises at least two separation bodies 32 arranged in the conveying direction. The conveying surfaces of the at least two separation bodies 32 are different in height. The gap between the at least two separation bodies 32 is closed. For example, the gap between the at least two separation bodies 32 can be closed by a connecting cloth, thereby avoiding the cut tobacco that has not been sufficiently separated from leaking onto the vibrating trough.

[0046] As shown in the figure, Figure 4 The separation body 32 comprises a frame 321 and a plurality of separation pieces 322 arranged on the frame 321. Specifically, the frame 321 is a square frame. The frame 321 is provided with a plurality of separation pieces 322. As shown in the figure, Figure 4 The separation body 32 of the embodiment of the present application forms a louver structure. The separation device of the embodiment of the present application can be obtained by simply modifying the vibrating trough. The separation device is arranged on the vibrating trough, wherein the conveying surface of the vibrating trough is used to flatten and evenly spread the cut tobacco falling from the loosening device, facilitating separation by the separation body 32.

[0047] In some embodiments, the shortening device 40 comprises a fixed knife device 42 and a moving knife device 41. The fixed knife device 42 comprises fixed blades. The moving knife device 41 comprises rotatable moving blades, and the rotation speed of the moving blades is adjustably set. The fixed knife device 42 comprises a plurality of fixed blades. The moving knife device 41 comprises a plurality of moving blades. The distance between the fixed blades and the distance between the moving blades are set according to the requirement of tobacco shortening. In some embodiments, the distance between the blades is 10mm-30mm. That is, the distance between adjacent fixed blades is 10mm-30mm, and the distance between adjacent moving blades is 10mm-30mm. Moreover, a certain gap is reserved between the moving blades and the fixed blades to facilitate the outflow of the cuttings.

[0048] In some embodiments, the blade edges of the fixed blades are formed with serrations. The serrated design can improve the cutting effect.

[0049] In some embodiments, the loosening device 20 comprises a feeding roller 22 and a loosening roller 23, and the rotation speeds of the feeding roller 22 and the loosening roller 23 are adjustably set. A certain distance is reserved between the feeding roller 22 and the loosening roller 23, and the distance can be adjusted within a certain range. A plurality of star-shaped blades are installed on each of the two rollers, and the blades are designed with equal spacing. Moreover, the blades of the feeding roller and the loosening roller are installed with a certain distance and staggered. A certain distance is reserved between the diameters of the two rollers, and the distance can be adjusted within a certain range. The feeding roller and the loosening roller are both controlled by frequency conversion, and the speed of the feeding roller is slower than that of the loosening roller. The greater the speed difference between the two, the better the loosening effect of the tobacco material entering the loosening device.

[0050] The loosening device 20 further comprises a feeding roller motor 24 for driving the feeding roller 22 and a loosening roller motor 21 for driving the loosening roller 23.

[0051] The working process of the tobacco processing equipment according to the embodiments of the present application is as follows: the dried tobacco enters the loosening device 20 through the feeding conveyor belt 10, and the tobacco is loosened and uniformly spread on the flat layer on the vibration groove 31. Then, the tobacco enters the separation main body 32. Under the vibration of the high-frequency vibration groove, the tobacco is repeatedly shaken and transported forward on the separation main body 32. During the high-frequency vibration, the short fibers fall to the lower part of the separator along the gaps between the separation blades, and part of the tobacco material is loosened due to the vibration, and the short fibers in the loosened tobacco also fall to the lower part of the separator. The short fibers that pass through the screen are transported into the next process or the conveyor belt by the high-frequency vibration groove. The long fibers that remain on the upper layer enter the shortening device for shortening treatment, and then are mixed with the short fibers that pass through the screen and enter the next process.

[0052] In some embodiments, the tobacco processing device further comprises a bypass device. The bypass device is connected to the loosening device. The bypass device comprises a conveying channel. The tobacco loosened by the loosening device can be selectively fed into the bypass device or the long and short tobacco separation device. The separation device can be designed to have a bypass mode, i.e., whether to separate the long and short tobaccos is selected according to the product process requirement. For example, if the long tobacco ratio of the incoming tobacco is low, the bypass mode can be directly selected without separating the long and short tobaccos.

[0053] In order to improve the applicability of the tobacco processing device of the embodiments of the present application, in some embodiments, the tobacco processing device further comprises a controller. The controller adjusts the speed ratio of the loosening roller 23 and the feeding roller 22, the vibration frequency of the vibration groove, the gap between the adjacent separation pieces, and the inclination angle of the separation pieces according to the parameters of the incoming tobacco. The adjustment herein refers to first adjusting the speed ratio of the loosening roller and the feeding roller, then detecting the output short tobacco and determining whether it meets the requirements. If it meets the requirements, no further adjustment is made to other parameters. If it does not meet the requirements, the vibration efficiency of the vibration groove is continuously adjusted, and similarly, the output short tobacco is continuously detected and determined whether it meets the requirements. If it meets the requirements, no further adjustment is made to other parameters. If it does not meet the requirements, the gap between the adjacent separation pieces and the inclination angle of the separation pieces are continuously adjusted.

[0054] In some embodiments, the controller adjusts the speed ratio of the loosening roller 23 and the feeding roller 22, the vibration frequency of the vibration groove, the gap between the adjacent separation pieces, and the inclination angle of the separation pieces according to the separation effect of the long and short tobaccos.

[0055] In some embodiments, after adjusting the speed ratio of the loosening roller 23 and the feeding roller 22, if the separation of the long and short tobaccos meets the requirements, the vibration frequency of the vibration groove, the gap between the adjacent separation pieces, and the inclination angle of the separation pieces are not adjusted.

[0056] In some embodiments, the gap between the feeding roller and the loosening roller of the loosening device and the long and short tobacco separation device of different length-width standards should be designed according to the production line capacity. In order to achieve better separation effect, the parameters of the separation device should be set according to the parameters of the incoming tobacco before design. The preferred parameters are: ① the length of the separation device should not be shorter than 2m. ② the thickness of the upper tobacco material at the tail end of the separation device should not be higher than 2cm. ③ in order to achieve better shortening effect and reduce the large increase of the short tobacco ratio, the proportion of the long tobacco on the upper layer of the separation device after the tobacco separation should be controlled within 40% of the proportion of the incoming tobacco.

[0057] The tobacco processing device of the embodiments of the present application can effectively separate the long and short tobaccos of the dried tobacco of the tobacco production line, and shorten the separated long tobacco, thereby effectively reducing the characteristic size of the tobacco.

[0058] According to the definition of tobacco industry tobacco structure, the tobacco above >3.35mm is called long filament. After the long-short filament separation device, the tobacco screened out in the upper layer, the long filament ratio can be >80% or more. After the whole set of long-short filament separation device, the long filament ratio in the tobacco can be reduced by 15% or more than before.

[0059] Tests and tests are made for the tobacco processing equipment of the embodiment of the application, and the results are as follows:

[0060] Among them, the tobacco flow is 3000kg / h, the speed ratio of the feeder roller and the loosening roller is 0.5, the length of the separation device is 2.5m, and the width is 1.9m. Four separation main bodies are adopted, the length of each separation main body is 60cm, the inclination angle is 5°, the frequency of the high-frequency vibration trough is 50Hz, and the frequency of the shortening device moving knife is 40Hz.

[0061] Under the same setting, different incoming tobacco structures are tested, the upper layer tobacco and the lower layer tobacco are collected and weighed, and the tobacco vibration separation screen is used to detect the samples, and the results are as follows:

[0062] Table 1 Long-short filament ratio of incoming tobacco with different structures after the separation device

[0063] Grade Upper layer (filament) weight proportion of the separating device Lower layer (short filament) weight proportion of the separating device Grade A 26.96％ 73.04％ Grade B 30.91％ 69.09％

[0064] Table 2 Various parameters of incoming tobacco with different structures after the separation device

[0065]

[0066] According to the data in Table 2, the results are as follows:

[0067] Change in whole filament rate Change in filament rate Change in short filament rate After picking long and beating short - before-after for grade A -9.17 -17.02 0.85 After picking long and beating short - before-after for grade B -11.53 -18.04 1.77 Average -10.35 -17.53 1.31

[0068] Through the above test detection, it can be known that:

[0069] 1. After the tobacco passes through the long-short filament separation device, the weight ratio of the upper layer (long filament) of the separation device is about 30%, and the weight ratio of the lower layer (short filament) of the separation device is about 70%. The long filament rate in the upper layer tobacco of the separation device is increased by 27% compared with the long filament rate before separation.

[0070] 2. After the tobacco passes through the online regulation of tobacco structure, the whole filament rate is reduced by an average of 10.35%, the long filament rate is reduced by an average of 17.53%, and the broken filament rate is increased by 1.31%. The long filament rate of the tobacco is significantly reduced.

[0071] It should be pointed out finally that the above examples are only used to illustrate the technical solutions of the present application but not to limit it; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range claimed by the present application.

Claims

1. A tobacco processing apparatus characterised in that, The application relates to a tobacco processing device, comprising: a loosening device (20) for loosening tobacco, wherein the loosening device (20) comprises a feeding roller (22) and a loosening roller (23), and the rotating speeds of the feeding roller (22) and the loosening roller (23) are adjustably set; a long-short tobacco separating device (30) for receiving the loosened tobacco from the loosening device (20) and separating the long-short tobacco, wherein the long-short tobacco separating device (30) comprises a vibrating trough (31) and a separating body (32) arranged on the vibrating trough (31), the separating body (32) comprises a plurality of separating pieces (322) arranged at intervals in a conveying direction, the separating pieces (322) are arranged obliquely relative to the conveying direction, and the oblique angles of the separating pieces (322) are adjustably set; the tobacco is conveyed forward under the vibration of the vibrating trough (31), and the short tobacco falls through the gaps between adjacent separating pieces. The tobacco processing device further comprises a controller, which adjusts the rotating speed ratio of the loosening roller (23) and the feeding roller (22), the vibration frequency of the vibrating trough, the gap between adjacent separating pieces and the oblique angle of the separating pieces according to the parameters of the incoming tobacco and the separating effect of the long-short tobacco; after the rotating speed ratio of the loosening roller (23) and the feeding roller (22) is adjusted, if the separation of the long-short tobacco meets the requirements, the vibration frequency of the vibrating trough, the gap between adjacent separating pieces and the oblique angle of the separating pieces are not adjusted any more.

2. A tobacco processing apparatus according to claim 1, characterised in that, The length of the separating body (32) is greater than 2 m, so that the thickness of the tobacco on the upper layer of the tail end of the separating body (32) is less than 2 cm.

3. A tobacco processing apparatus according to claim 1, characterised in that, The long-short tobacco separating device (30) further comprises a flat section (33) arranged upstream of the separating body (32), which is used for receiving the tobacco falling from the loosening device (20) and flattening the tobacco.

4. A tobacco processing apparatus according to claim 1, characterised in that, The long-short tobacco separating device (30) comprises at least two separating bodies (32) arranged in the conveying direction, the heights of the at least two separating bodies (32) are different, and the gap between the at least two separating bodies (32) is closed.

5. A tobacco processing apparatus according to claim 1, characterised in that, The tobacco processing device further comprises a shortening device (40) for receiving the long tobacco output from the separating body (32) and shortening the long tobacco.

6. A tobacco processing apparatus according to claim 5, characterised in that, The shortening device (40) comprises a fixed knife device and a movable knife device, the fixed knife device comprises a fixed knife piece, the movable knife device comprises a movable knife piece rotatably arranged, and the rotating speed of the movable knife is adjustably set.

7. A tobacco processing apparatus according to claim 6, characterised in that, The cutting edge of the fixed knife piece is formed with sawteeth.

8. A tobacco processing apparatus according to claim 1, characterised in that, The tobacco processing device further comprises a bypass device, which is connected with the loosening device (20), and the bypass device comprises a conveying channel, the tobacco output from the loosening device (20) can selectively enter the bypass device or the long-short tobacco separating device (30).

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