Improved and optimized integrated equipment for bimodal tobacco shred structure

Abstract

The utility model discloses a bimodal tobacco shred structure improvement and optimization integrated device which is arranged between a feeding port of a tobacco shred production line and a feeding device. The core is a multi-layer vibration conveying screen set which comprises four layers of screens, the first layer is used for primarily screening tobacco shreds with the diameter larger than 6 mm, and a first valve is arranged at the tail end of the first layer and matched with filament cutting equipment; the second-layer screen is used for screening the cut tobaccos of 1.3-6mm, and a second valve is used for controlling blanking; the third layer reversely conveys and receives the filaments for screening; the size of the fourth-layer screen is larger than 0.8 mm, and a third valve at the tail end controls discharging. By controlling each layer of valve switch, the tobacco shred screening and conveying path can be flexibly adjusted to adapt to the production of fine cigarettes and medium cigarettes, the filament rate is effectively reduced, the production flexibility and the product quality stability are improved, the tobacco shred quality stability is ensured, the quality problem is reduced, the screening precision and the production efficiency are improved, the waste and the cost are reduced, and the production equipment is efficient and reliable.

Description

Technical Field

[0001] This utility model relates to the field of tobacco shredding production line improvement technology, specifically a dual-mode tobacco shred structure improvement and optimization integrated equipment. Background Technology

[0002] In recent years, slim and medium-length cigarettes have emerged as prominent sub-categories in the Chinese-style cigarette market. In terms of market coverage, they have continuously expanded, gradually penetrating various regional markets, appearing in both urban and rural areas, and steadily increasing their market share. In terms of sales volume, they have maintained a continuous growth trend, with more and more consumers choosing slim and medium-length cigarettes as their daily smoking category. Their growth rate is astonishing, far exceeding the growth rate of traditional regular cigarettes, becoming a significant force driving the overall growth of the cigarette market. Moreover, consumer acceptance of these two types of cigarettes is also increasing, gradually shifting from initial novelty consumption to a stable preference, thanks to their unique taste, stylish packaging, and product features that align with current consumer trends.

[0003] However, most cigarette factories face a thorny problem: existing tobacco processing lines and cigarette manufacturing standards were primarily designed for the production needs of regular cigarettes. Regular cigarette production emphasizes a high filament ratio in the tobacco, ensuring good filling properties, combustibility, and aroma release. But for slim and medium-sized cigarettes, with their relatively narrow diameters, an excessively high filament ratio can easily lead to the tobacco tangling and knotting within the cigarette during production. This not only affects the rolling quality, resulting in uneven appearance and inconsistent density, but also causes uneven burning and cigarette tipping, severely impacting the smoking experience. Therefore, it fails to meet the specific requirements of slim and medium-sized cigarettes for their tobacco structure.

[0004] Once the tobacco processing technology is determined, key parameters such as the width of the shredded leaves, the moisture content during processing, and the temperature cannot be easily changed. This is because adjusting these parameters has a ripple effect, impacting the stability of the entire tobacco processing process and the quality of the final tobacco product in a wide and complex way. For example, changes in the width of the shredded leaves may affect the filling properties and burning speed of the tobacco, while fluctuations in processing moisture and temperature may alter the tobacco's flexibility, the retention of aroma components, and the degree of chemical reaction, thus affecting the smoking experience of the cigarette.

[0005] Therefore, current technologies lack flexible and efficient tobacco feeding equipment for tobacco processing production lines of medium and slim cigarettes and conventional cigarettes. Summary of the Invention

[0006] To address the shortcomings and defects of existing technologies, the inventors, through innovative research and design, have provided a device with specific functions. This device can address the problem of excessively high filament ratios in the production of slim and medium-sized cigarettes without disrupting the existing tobacco processing technology. It can also adjust the tobacco structure as needed, while maintaining the production line's flexibility to switch between producing different types of cigarettes to meet the tobacco structure requirements of both slim and medium-sized cigarettes. This effectively solves the problem of excessively high filament ratios in the production of slim and medium-sized cigarettes, improves the production adaptability and product quality stability of cigarette manufacturers, and further promotes the healthy development of the slim and medium-sized cigarette market.

[0007] Specifically, this utility model is implemented as follows: A dual-mode tobacco shred structure improvement and optimization integrated device is installed on the tobacco processing production line, located between the feed inlet and the feeding equipment, for providing tobacco shred screening, switching, and conveying. It includes: a multi-layer vibrating conveyor screen group, whose feed end is located below the discharge port of the upstream process section or the discharge end of the conveyor belt, and whose ends and discharge ends are connected to the inlet end of the conveyor belt of the next process section. The end of the lowest layer of the conveyor screen is connected to the tobacco dust duct for centralized dust removal. The multi-layer vibrating conveyor screen group includes, from top to bottom: a first layer of conveyor screen, used for initial screening and retaining tobacco shreds of a length greater than a first preset value, with a first gate at the end of the conveyor screen surface; a long shred cutting device is provided on one side of the end of the first layer of conveyor screen, and the first gate is correspondingly equipped with... The material discharge channel, the outlet of which and the discharge end of the long filament cutting device are both connected to the inlet end of the conveyor belt of the next process section; the second layer of conveyor screen is used to catch the tobacco shreds screened out by the first layer of conveyor screen and continue to screen and convey them, and has a second valve at the end of the conveyor screen surface; the end of the second layer of conveyor screen is connected to the material discharge channel; the third layer of conveyor screen is used to catch the fine filaments screened out by the second layer of conveyor screen and continue to screen and convey them, and the end of the third layer of conveyor screen can discharge to the fourth conveyor screen; the fourth conveyor screen is used to catch the broken filaments screened out by the third layer of conveyor screen and continue to screen and convey them, and has a third valve at the end of the conveyor screen surface; the end of the fourth conveyor screen is connected to the inlet end of the conveyor belt of the next process section; the bottom of the fourth conveyor screen is connected to the smoke duct.

[0008] Furthermore, the first, second, and fourth conveyor screens all move in the direction of the conveyor belt inlet of the next process section; the third conveyor screen moves in the opposite direction.

[0009] Furthermore, the long filament cutting equipment includes a main housing, and an upper conveyor belt, a cutting toothed roller group, a lower conveyor belt, and a hopper disposed within the main housing. The cutting toothed roller group is connected by a drive motor and positioned between the upper and lower conveyor belts. The upper conveyor belt is installed at the end of the first layer of conveying screen and is used to convey tobacco shreds and drop them into the cutting toothed roller group for cutting. The lower conveyor belt is used to catch the short filaments falling from the cutting toothed roller group and convey them to the hopper for discharge. The hopper is located directly below the inlet end of the conveyor belt of the next process section. The discharge channel is separately located outside the main housing and is connected to the hopper below.

[0010] Furthermore, when the first valve is open, the tobacco shreds on the first layer of conveying screen move to the position of the first valve and fall into the material discharge channel. When the first valve is closed, the tobacco shreds on the first layer of conveying screen continue to be conveyed to the end and enter the long filament cutting device. When the second valve is open, the tobacco shreds on the second layer of conveying screen move to the position of the second valve and fall into the third layer of conveying screen. When the second valve is closed, the tobacco shreds on the second layer of conveying screen move into the material discharge channel. When the third valve is open, the broken tobacco material on the fourth layer of conveying screen is discharged. When the third valve is closed, the broken tobacco material on the fourth layer of conveying screen moves to the inlet end of the conveyor belt of the next process section.

[0011] Furthermore, the first layer of conveying screen is configured to screen out tobacco shreds with a length of 6mm or more; the second layer of conveying screen is configured to screen out tobacco shreds with a length of 1.3mm to 6mm; and the fourth layer of conveying screen is configured to screen out tobacco shreds with a length of 0.8mm or more.

[0012] Furthermore, the first layer of conveying screen is divided into multiple sections with different screen specifications, and a combination screen structure with screen specifications of 3mm, 4mm and 6mm is arranged sequentially along its conveying direction.

[0013] The working principle of this utility model: The core component of this utility model is a multi-layer vibrating conveyor screen assembly. This equipment uses a multi-layer vibrating conveyor screen assembly to screen and convey tobacco shreds. Specifically, it includes four layers of conveyor screens. The first layer of conveyor screens is used for initial screening and retaining tobacco shreds longer than 6mm. It has a first gate at the end. When the gate is open, the tobacco shreds fall into the material discharge channel and enter the conveyor belt inlet of the next process section. When the gate is closed, the tobacco shreds continue to be conveyed to the long shred cutting device. The long shred cutting device is located at the end of the first layer of conveyor screens and is used to process long shreds longer than 6mm. The second layer of conveyor screens is used to catch the tobacco shreds screened out from the first layer and continue to screen tobacco shreds with a length of 1.3mm to 6mm. It has a second gate at the end. When the gate is open, the tobacco shreds fall into the third layer of conveyor screens. When the gate is closed, the tobacco shreds fall into the material discharge channel. The third layer of conveyor screens is used to catch the fine shreds screened out from the second layer and continue to screen and convey them. The end of the screen discharges the tobacco shreds to the fourth layer of conveyor screens. The fourth layer of conveyor screen catches the shredded tobacco from the third layer and continues to screen tobacco shreds longer than 0.8mm. A third valve is located at the end; when the valve is open, the shredded tobacco is discharged; when the valve is closed, the shredded tobacco moves to the conveyor belt inlet of the next process section. This equipment includes multiple workflow sections for processing long shreds, cutting long shreds, screening medium-length tobacco, screening fine tobacco, and processing shredded tobacco. By controlling the opening and closing of the valves on each layer of screens, the screening and conveying path of the tobacco shreds can be flexibly adjusted to meet the production needs of different types of cigarettes (such as slim and medium-length cigarettes), while maintaining the flexibility of the production line and the stability of product quality. Through multiple layers of screens and long shred cutting equipment, the long shred ratio is effectively reduced, meeting the production needs of slim cigarettes. This allows for flexible and convenient adjustment of the tobacco structure through the opening and closing of the valves, adapting to different types of cigarette production.

[0014] The beneficial technical effects of this utility model are as follows:

[0015] (1) Improve production flexibility: By controlling the opening and closing of the gates of each layer of screens, the screening and conveying path of tobacco can be flexibly adjusted according to production needs. For example, it can be switched to the production mode of slim cigarettes or medium cigarettes to meet the production needs of different types of cigarettes.

[0016] (2) Improve product quality stability: Through precise screening and processing, the quality of tobacco shreds entering the next process stage can be ensured to be stable, reducing product quality problems caused by inconsistent tobacco shred length.

[0017] This dual-mode tobacco structure improvement and optimization integrated equipment significantly improves screening accuracy, production flexibility, product quality stability, and production efficiency through multi-layer screens and flexible control mechanisms, while reducing waste and costs. It is a highly efficient and reliable production equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structural composition of the integrated device for improving and optimizing the dual-modal tobacco structure of this utility model;

[0019] Figure 2 The structural three-dimensional design of the integrated device for improving and optimizing the dual-modal tobacco structure of this utility model. Figure 1 ;

[0020] Figure 3 The structural three-dimensional design of the integrated device for improving and optimizing the dual-modal tobacco structure of this utility model. Figure 2 ;

[0021] Figure 4 This is a three-dimensional structural view of the long filament cutting device of the integrated dual-mode tobacco structure improvement and optimization equipment of this utility model;

[0022] Figure 5 This is a schematic diagram of the conveying direction of the conveying screen in the integrated device for improving and optimizing the dual-mode tobacco structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the closed state of the valve on the conveyor screen of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the valve on the conveyor screen of this utility model in the open state;

[0025] in:

[0026] 1—First layer conveyor screen; 11—First gate;

[0027] 2—Second layer conveyor screen; 21—Second gate;

[0028] 3—Third layer conveyor screen;

[0029] 4—Fourth conveyor screen; 41—Third valve;

[0030] 5—Fiber cutting equipment;

[0031] 51—Main box body, 52—Upper conveyor belt, 53—Short toothed roller assembly, 54—Lower conveyor belt, 55—Discharge hopper, 56—Discharge channel;

[0032] 6—Smoke and dust duct. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0034] Example 1: The basic functions of an integrated device for improving and optimizing the structure of dual-modal tobacco shreds are as follows:

[0035] 1. The tobacco structure improvement equipment in this embodiment uses a dual-motor drive to improve the structure of the tobacco before flavoring, and has the following functions:

[0036] 2. When producing standard cigarettes: the upper layer (layers 1 and 2) works at Kw; when producing slim cigarettes: all four layers work simultaneously; the uppermost layer outlet is equipped with a long filament shortening (cutting) device: which has the functions of shortening and loosening tobacco filaments and cutting tobacco filaments.

[0037] 3. The upper two-layer sieves perform the existing coarse cigarette sieving function, that is, the first layer sieve A performs the initial sieving of tobacco shreds. The screens are combined to screen out tobacco shreds of 6mm or more. A pneumatic door is installed at the outlet. When producing slim cigarettes, the door is closed and the tobacco shreds enter the long shred cutting equipment 5 for cutting. When producing regular cigarettes, the pneumatic door is opened and the tobacco shreds go directly to the next process.

[0038] 4. The second layer of screen mesh has the following mesh size: Materials smaller than 6mm are finely screened to remove broken tobacco strands. When producing regular specifications, the material on the screen enters the next process to ensure that the tobacco content meets national standards. The third and fourth pneumatic doors are opened, and the material under the screen falls into the tobacco dust duct.

[0039] 5. When producing slim cigarettes, tobacco shreds smaller than 1mm enter the third-layer trough, and the pneumatic valve at the outlet closes. The material is then loosened and conveyed to the fourth layer (screen) after passing through the third-layer trough. The tobacco is then finely screened to recover tobacco that meets the specifications for producing slim cigarettes.

[0040] 6. Fourth layer of screen mesh A pneumatic door is installed at the outlet. When producing regular products, the door is opened and the shredded tobacco enters the centralized dust removal process. When producing fine products, the pneumatic door is closed and the net material enters the next process. Materials smaller than 0.7mm fall into the bottom tank for loosening and uniform distribution or fall into the dust duct (6).

[0041] Example 2: The usage process of an integrated device for improving and optimizing the structure of dual-modal tobacco shreds:

[0042] The first conveyor screen 1 is used for initial screening and retains tobacco shreds longer than 6mm. It has a first valve 11 at its end; when the valve is open, the tobacco shreds fall into the discharge channel 56; when the valve is closed, the tobacco shreds continue to be conveyed to the long-shred cutting device 5. The second conveyor screen 2 is used to catch the tobacco shreds screened from the first layer and continues to screen tobacco shreds with a length of 1.3mm to 6mm. It has a second valve 21 at its end; when the valve is open, the tobacco shreds fall into the third conveyor screen 3; when the valve is closed, the tobacco shreds fall into the discharge channel 56. The third conveyor screen 3 is used to catch the fine shreds screened from the second layer and continues to screen and convey them, discharging the tobacco shreds to the fourth conveyor screen at its end. The fourth conveyor screen is used to catch the broken shreds screened from the third layer and continues to screen tobacco shreds longer than 0.8mm. It has a third valve 41 at its end; when the valve is open, the broken tobacco material is discharged; when the valve is closed, the broken tobacco moves to the conveyor belt inlet of the next process section. The tobacco shreds enter the multi-layer vibrating conveyor screen group from the upstream process section. The first conveyor screen 1 screens out long shreds longer than 6mm, and the remaining tobacco shreds fall into the second conveyor screen 2. When producing regular tobacco shreds, the long shreds on the first conveyor screen 1 fall into the material discharge channel 56 through the open first valve 11, directly entering the conveyor belt inlet of the next process section; if producing slim cigarettes, the first valve 11 is closed, and the tobacco shreds enter the long shred cutting device 5 for cutting before entering the conveyor belt inlet of the next process section; the second conveyor screen 2 screens out tobacco shreds with a length of 1.3mm to 6mm, and the remaining tobacco shreds fall into the third conveyor screen 3. When producing regular tobacco shreds, the second valve 21 is closed (only the first and second conveyor screens are in operation), and the tobacco shreds... The material directly enters the discharge channel 56 and then directly enters the conveyor belt inlet of the next process section. When it is necessary to produce slim cigarettes, the second valve 21 is opened, and the third layer conveyor screen 3 of the tobacco discharge channel continues to screen. The end of the third layer conveyor screen 3 is connected to the starting end of the fourth conveyor screen 4, and the tobacco dust smaller than 0.8mm is screened out and conveyed to the tobacco dust duct 6. When it is necessary to remove tobacco dust with a thickness of 0.8mm-1.3mm, the third valve 41 is opened for unified collection. When it is necessary to produce slim cigarettes, the third valve 41 is closed, and the material larger than 0.8mm is conveyed to the conveyor belt inlet of the next process section.

[0043] The long filament cutting device 5 includes a main housing 51, and an upper conveyor belt 52, a cutting toothed roller group 53, a lower conveyor belt 54, and a feeding hopper 55, all installed inside the main housing 51. The cutting toothed roller group 53 is connected by a drive motor and is positioned between the upper and lower positions of the upper conveyor belt 52 and the lower conveyor belt 54. The upper conveyor belt 52 is installed at the end of the first layer of conveying screen 1 and is used to convey tobacco filaments and drop them into the cutting toothed roller group 53 for cutting. The lower conveyor belt 54 is used to catch the short filaments falling from the cutting toothed roller group 53 and convey them to the feeding hopper 55 for discharge. The bottom of the feeding hopper 55 is directly opposite the inlet end of the conveyor belt of the next process section. The discharge channel 56 is separately installed outside the main housing 51 and is connected to the feeding hopper 55 below. It should be noted that the short-cutting toothed roller group 53 is used to cut long tobacco shreds into short shreds. It includes a power device to provide rotation. Its specific tooth shape and structure are existing technologies and will not be described in more detail in this embodiment. Similarly, the structural details of the transmission, vibration and operation parts of the conveying screen are also known technologies.

[0044] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A bimodal tobacco structure modification and optimization integrated device, which is arranged on a tobacco processing line, between a feeding inlet and a feeding device, and is used for providing screening switching and conveying of tobacco, characterized in that The application relates to a multi-layer vibrating conveying screen group. The multi-layer vibrating conveying screen group comprises: The first layer conveying screen (1) is used for primary screening and leaving tobacco shreds longer than a first preset value, and a first valve (11) is arranged at the end of the conveying screen surface; the end of the first layer conveying screen (1) is provided with a long-shred shortening device (5); the first valve (11) is correspondingly provided with a discharging channel (56); and the outlet of the discharging channel (56) and the discharging end of the long-shred shortening device (5) are connected to the inlet end of the conveying belt of the next process section. The second layer conveying screen (2) is used for receiving the tobacco shreds screened by the first layer conveying screen (1) and continuing to screen and convey the tobacco shreds; a second valve (21) is arranged at the end of the conveying screen surface; and the end of the second layer conveying screen (2) is connected to the discharging channel (56). The third layer conveying screen (3) is used for receiving the fine shreds screened by the second layer conveying screen (2) and continuing to screen and convey the fine shreds; the end of the third layer conveying screen (3) can discharge to the fourth conveying screen (4). The fourth conveying screen (4) is used for receiving the broken shreds screened by the third layer conveying screen (3) and continuing to screen and convey the broken shreds; a third valve (41) is arranged at the end of the conveying screen surface; and the end of the fourth conveying screen (4) is connected to the inlet end of the conveying belt of the next process section; and the fourth conveying screen (4) is connected to the tobacco-foam air pipe (6). The conveying directions of the first layer conveying screen (1), the second layer conveying screen (2) and the fourth conveying screen (4) are all towards the inlet end of the conveying belt of the next process section; and the conveying direction of the third layer conveying screen (3) is reverse conveying.

2. The dual modality tobacco structure modification optimization integrated device of claim 1, wherein, The long-shred shortening device (5) comprises a main box body (51), an upper conveying belt (52), a shortening tooth roller group (53), a lower conveying belt (54) and a discharging hopper (55); the shortening tooth roller group (53) is connected through a driving motor and is arranged between the upper and lower positions of the upper conveying belt (52) and the lower conveying belt (54); the upper conveying belt (52) is installed at the end of the first layer conveying screen (1) and is used for conveying tobacco shreds and falling into the shortening tooth roller group (53) for shortening; the lower conveying belt (54) is used for receiving the short shreds falling from the shortening tooth roller group (53) and conveying the short shreds to the discharging hopper (55) for discharging; and the discharging hopper (55) is connected to the inlet end of the conveying belt of the next process section.

3. The dual modality tobacco structure modification optimization integrated device of claim 1, wherein, The discharging channel (56) is arranged outside the main box body (51) and is connected to the discharging hopper (55). When the first valve (11) is opened, the tobacco shreds on the first layer conveying screen (1) fall into the discharging channel (56) when moving to the position of the first valve (11); and when the first valve (11) is closed, the tobacco shreds on the first layer conveying screen (1) continue to be conveyed to the end and enter the long-shred shortening device (5).

4. The dual modality tobacco structure modification optimization integrated device of claim 1, wherein, ​ When the second shutter (21) is opened, the cut tobacco on the second conveying screen (2) moves to the third conveying screen (3) and falls into the third conveying screen (3); when the second shutter (21) is closed, the cut tobacco on the second conveying screen (2) moves into the dropping channel (56). When the third shutter (41) is opened, the cut tobacco on the fourth conveying screen (4) is discharged; when the third shutter (41) is closed, the cut tobacco on the fourth conveying screen (4) moves to the inlet end of the conveying belt of the next process section.

5. The bimodal tobacco structure modification optimization integrated device of claim 1, wherein, The first conveying screen (1) is set to screen out cut tobacco with a length of more than 6 mm; the second conveying screen (2) is set to screen out cut tobacco with a length of 1.3 mm to 6 mm; and the fourth conveying screen (4) is set to screen out cut tobacco with a length of more than 0.8 mm.

6. The bimodal tobacco structure modification optimization integrated device of claim 1, wherein, The first conveying screen (1) is divided into multiple sections with different screen specifications, and the combined screen structure with screen specifications of 3 mm, 4 mm and 6 mm is arranged in sequence along the conveying direction.

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