Tobacco shred layering device

Abstract

The utility model belongs to the technical field of tobacco winnowing, and particularly relates to a tobacco shred layering device which comprises a first screening device, a second screening device, a conveying device and a winnowing box. The second screening device comprises a plurality of layers of sorting gear roller sets which are vertically and sequentially arranged, the feeding end of the sorting gear roller set on the upper layer is connected with the discharging end of the first screening device, and the discharging end of each sorting gear roller set is provided with a conveying device; the conveying device is used for conveying materials to the feeding end of the winnowing box. The tobacco shreds are layered by the layering device at the inlet of the winnowing equipment according to the length of the tobacco shreds, so that the tobacco shreds with different properties enter winnowing in a layered manner, and the winnowing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco air selection, and in particular relates to a tobacco stratification device. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] During tobacco processing, there is a certain proportion of hard stems in the cut tobacco, and the stem content of the tobacco has an important impact on the rolling quality, combustion process and sensory quality of cigarette products. At present, the main method is to remove the stems by flexible air separation boxes to improve the purity of tobacco.

[0004] The flexible air separation box uses the difference in the suspension speed of tobacco and stems in the air flow to separate them. The suspension speed refers to the wind speed required for the material to be in a suspended state. The suspension speed of tobacco is low, while the suspension speed of stems is high, so they can be separated during the air separation process.

[0005] However, after being cut, the external dimensions of the stems are very close to those of the tobacco, and the suspension speed is not much different from that of the tobacco. Moreover, the tobacco will curl up or even twist into a ball after being dried and cooled, resulting in a reduction in the surface area of ​​the tobacco and an increase in the suspension speed. All these increase the difficulty of wind-selecting and removing the stems.

[0006] Among the existing methods, multi-stage air separation is mainly used to increase the removal efficiency and quality, but multi-stage air separation will cause the problem of excessive water loss; or simply remove foreign matter and loosen the tobacco before air separation, which has the problems of complex equipment, high processing intensity and large crushing. Utility Model Content

[0007] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a tobacco stratification device.

[0008] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0009] The first aspect of the utility model provides a tobacco stratification device, comprising: a first screening device, a second screening device, a conveying device and an air separation box;

[0010] The second screening device includes multiple layers of sorting gear roller groups arranged vertically in sequence, the feed end of the upper sorting gear roller group is connected to the discharge end of the first screening device, and the discharge end of each layer of sorting gear roller group is respectively provided with a conveying device; the conveying device is used to convey the material to the feed end of the air separation box.

[0011] Furthermore, the first screening device is a vibration trough, and a screen for conveying materials is provided on the vibration trough.

[0012] Furthermore, the sorting gear roller group has two layers, including: an upper sorting gear roller group and a lower sorting gear roller group.

[0013] Furthermore, the conveying device includes a first conveying device, a second conveying device and a third conveying device.

[0014] Furthermore, the first conveying device is arranged at the lower end of the upper-layer sorting gear roller group, and is used to convey the materials on the upper-layer sorting gear roller group.

[0015] Furthermore, the second conveying device is arranged at the lower end of the lower-layer sorting gear roller group, and is used to convey the materials on the lower-layer sorting gear roller group.

[0016] Furthermore, the third conveying device is arranged below the lower-layer sorting gear roller group, and is used for conveying the materials screened and dropped by the lower-layer sorting gear roller group.

[0017] Furthermore, each layer of the sorting gear roller group includes a plurality of gear rollers arranged in sequence in the horizontal direction.

[0018] Furthermore, in the upper-layer sorting gear roller set, there is a gap between the tops of the gears on adjacent roller shafts; in the lower-layer sorting gear roller set, the gears on adjacent roller shafts are staggered.

[0019] Furthermore, the conveying device is a belt conveyor.

[0020] One or more of the above technical solutions have the following beneficial effects:

[0021] (1) The utility model utilizes a layered screening device at the entrance of the air separation device to layer the tobacco according to the length of the tobacco, so that tobacco of different properties enters the air separation in layers, thereby improving the air separation effect.

[0022] (2) The utility model utilizes a multi-layer sorting gear roller group to sort the tobacco shreds. After being screened by the upper-layer sorting gear roller group, the shorter and broken tobacco shreds will fall into the lower-layer sorting gear roller group; the lower-layer sorting gear roller group will further screen the tobacco shreds. The utility model utilizes the gaps between the gear roller shafts to screen the tobacco shreds, has a simple structure, and has low equipment complexity; and will not cause excessive breakage of the tobacco shreds.

[0023] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 This is a structural diagram of a tobacco layering device in Example 1.

[0026] Figure 2 This is a structural diagram of the first screening device of Example 1.

[0027] Figure 3 This is a structural diagram of the second screening device of Example 1.

[0028] In the figure, 1. the first screening device, 101 screen, 2. the upper sorting gear roller group, 3. the lower sorting gear roller group, 4. the third conveying device, 5. tobacco, 6. the air separation box, 7. the second conveying device, 8. the first conveying device. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Embodiment 1

[0031] like Figure 1 As shown, the utility model provides a tobacco stratification device, comprising: a first screening device, a second screening device, a conveying device and an air separation box;

[0032] The second screening device includes multiple layers of sorting gear roller groups arranged in sequence in a vertical direction. The feed end of the upper sorting gear roller group is connected to the discharge end of the first screening device. The discharge end of each layer of the sorting gear roller group is respectively provided with a conveying device, which is used to convey the material to the feed end of the air separation box.

[0033] The utility model adds a multi-layer sorting gear roller group at the inlet of the air separation box, so that tobacco shreds of different levels enter the air separation in layers, thereby improving the air separation effect.

[0034] As a further technical solution, Figure 2 As shown, the first screening device 1 is a vibrating trough, on which a screen 101 for conveying materials is provided. The structure of the vibrating trough belongs to the prior art and will not be described in detail here.

[0035] After drying, the tobacco shreds enter the air separation box. Before entering the air separation box, most of the tobacco shreds are curled, with small stems, high density and hard texture. Therefore, the tobacco shreds are screened by the first screening device, and the tobacco shreds are removed by the vibration principle.

[0036] As a further technical solution, Figure 3As shown, the number of layers of the sorting gear roller group is two, including: an upper sorting gear roller group 2 and a lower sorting gear roller group 3.

[0037] The conveying device comprises a first conveying device 8, a second conveying device 7 and a third conveying device 4. The first conveying device 8 is arranged at the lower end of the upper sorting gear roller group 2, and is used to convey the materials on the upper sorting gear roller group 2.

[0038] The second conveying device 7 is arranged at the lower end of the lower-layer sorting gear roller set 3 and is used to convey the materials on the lower-layer sorting gear roller set 3 .

[0039] The third conveying device 4 is arranged below the lower-layer sorting gear roller group 3 and is used for conveying the materials screened and dropped by the lower-layer sorting gear roller group 3 .

[0040] In this embodiment, the conveyed material is tobacco 5, and the conveying device is a belt conveyor, which is used to convey tobacco; the belt conveyor is connected to a power device for providing power for the belt conveyor, and the belt conveyor is an existing structure and will not be described in detail here.

[0041] As a further technical solution, each layer of the sorting gear roller group includes a plurality of gear rollers arranged in sequence in the horizontal direction, and in the upper layer of the sorting gear roller group, there is a gap between the tops of the gears on adjacent roller shafts. In the lower layer of the sorting gear roller group, the gears on adjacent roller shafts are staggered.

[0042] In this embodiment, in the upper-layer sorting gear roller group, the gap between the tops of adjacent roller gears is recommended to be 10 mm, and the specific size can be set according to actual production conditions; in the lower-layer sorting gear roller group, the roller gears are staggered, and the overlapping distance of the gear tops is recommended to be 10 mm, and the specific size can be set according to actual production conditions; the upper-layer sorting gear roller group and the lower-layer sorting gear roller group are set at a certain distance.

[0043] After the tobacco is transported into the second screening device in the first process, the upper device mainly transports long tobacco, the lower device mainly transports medium-length tobacco, and the bottom device transports short tobacco and broken tobacco. By classifying tobacco of different lengths before winnowing, the winnowing efficiency of tobacco is improved and the purity of exported tobacco is improved.

[0044] The working principle of the utility model is that during production, after the tobacco 5 is transported to the second screening device via the vibration trough, the tobacco is first selected and transported by the rotation of the gear rollers in the upper-layer sorting gear roller group, and the short tobacco falls from the gap of the gear rollers to the lower layer, and the long tobacco is transported to the first conveying belt via the gear rollers;

[0045] The lower-layer sorting gear roller group selects the tobacco again, and the short tobacco and broken tobacco fall onto the third conveyor belt. The lower-layer gear roller conveys the medium-length tobacco to the second conveyor belt. The three-layer conveyor belts convey tobacco of different lengths to the air separation box 6 respectively, to achieve graded air separation of the tobacco.

[0046] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A tobacco stratification device, characterized in that: include: A first screening device, a second screening device, a conveying device and an air separation box; The second screening device includes multiple layers of sorting gear roller groups arranged vertically in sequence, the feed end of the upper sorting gear roller group is connected to the discharge end of the first screening device, and the discharge end of each layer of sorting gear roller group is respectively provided with a conveying device; the conveying device is used to convey the material to the feed end of the air separation box.

2. A tobacco stratification device according to claim 1, characterized in that: The first screening device is a vibration trough, and a screen for conveying materials is provided on the vibration trough.

3. A tobacco stratification device according to claim 1, characterized in that: The number of layers of the sorting gear roller group is two, including: an upper sorting gear roller group and a lower sorting gear roller group.

4. A tobacco stratification device according to claim 3, characterized in that: The conveying device includes a first conveying device, a second conveying device and a third conveying device.

5. A tobacco stratification device according to claim 4, characterized in that: The first conveying device is arranged at the lower end of the upper-layer sorting gear roller group, and is used for conveying the materials on the upper-layer sorting gear roller group.

6. A tobacco stratification device according to claim 4, characterized in that: The second conveying device is arranged at the lower end of the lower-layer sorting gear roller group and is used for conveying the materials on the lower-layer sorting gear roller group.

7. A tobacco stratification device according to claim 4, characterized in that: The third conveying device is arranged below the lower-layer sorting gear roller group and is used for conveying the materials dropped by the lower-layer sorting gear roller group.

8. The tobacco stratification device according to claim 3, characterized in that: Each layer of the sorting gear roller group includes a plurality of gear rollers arranged in sequence in the horizontal direction.

9. A tobacco stratification device according to claim 8, characterized in that: In the upper-layer sorting gear roller group, there is a gap between the tops of the gears on adjacent roller shafts; in the lower-layer sorting gear roller group, the gears on adjacent roller shafts are staggered.

10. The tobacco stratification device according to claim 1, characterized in that: The conveying device is a belt conveyor.

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