Tobacco stem and tobacco shred separating device

Abstract

The utility model relates to a tobacco stem and tobacco shred separating device which comprises a box body, a tobacco stem separating device and a tobacco shred separating device. The feeding opening is formed in the box body; an inner cavity of the box body comprises a first area, a second area and a third area, and the first area, the second area and the third area are provided with a first discharge port, a second discharge port and a third discharge port respectively; the air blowing assembly is used for blowing air into the inner cavity of the box body; and the material conveying channel is used for conveying the materials discharged from the second discharging opening to the feeding opening. According to the tobacco stem and tobacco shred separating device, under the action of the air blowing assembly, the tobacco stem and tobacco shred mixture is blown into the inner cavity of the box body, due to the fact that the tobacco stems and the tobacco shreds are different in mass and density and different in moving distance along with air, the moving distance of the tobacco shreds is larger, and the tobacco shreds can be separated from the tobacco shreds. And part of the tobacco stem and tobacco stem mixture which is not thoroughly separated falls into the second area and is conveyed to the feeding port to be subjected to blowing separation again, so that the tobacco stem and tobacco stem separation efficiency can be greatly improved.

Description

Technical Field

[0001] This application relates to the field of tobacco processing technology, and in particular to a tobacco stem and tobacco shred separation device. Background Technology

[0002] Cigarette factories use a large amount of tobacco shreds during production. Tobacco shreds are made from tobacco leaves through multiple processing steps. One important step is separating the tobacco stems from the shreds, separating the larger stems to achieve finer selection and improve the quality of the tobacco. Currently, the most widely used tobacco stem-to-shred separation devices in cigarette factories mainly consist of a vertically arranged channel with some sections featuring continuous S-shaped bends. The tobacco shreds flow along the channel under the influence of airflow. By repeatedly changing the flow direction of the tobacco shreds, due to the different qualities of the stems and shreds, they are transported in layers within the channel. When discharged from the channel's outlet, the tobacco shreds and stems are collected separately to different devices, thus achieving separation. However, in actual tobacco processing, it has been found that the separation effect of this type of tobacco stem-to-shred separation device is not ideal. Often, the separated stems contain some tobacco shreds, and the separated tobacco shreds contain some stems, affecting the quality of the tobacco. Utility Model Content

[0003] The purpose of this application is to provide a tobacco stem and tobacco shred separation device, which can more effectively and thoroughly separate tobacco stems from tobacco shreds, thereby effectively solving the shortcomings of the prior art.

[0004] Therefore, this application provides a tobacco stem and tobacco shred separation device, comprising:

[0005] The box has an internal cavity and an opening. The internal cavity of the box communicates with the outside through the opening, and the opening is located on one side of the box in the horizontal direction.

[0006] The feeding port is located in the box body and near the opening;

[0007] The internal cavity of the box includes a first region, a second region, and a third region arranged sequentially along the direction parallel to the opening. The first region, the second region, and the third region are respectively provided with a first discharge port, a second discharge port, and a third discharge port.

[0008] A blower assembly, located near the opening of the housing, is used to blow air into the internal cavity of the housing;

[0009] The material conveying channel is located between the second discharge port and the feed port, and is used to convey the material discharged from the second discharge port to the feed port.

[0010] In some possible implementations, the box body includes a bottom plate, a top plate, and three side plates, which together form the box body. The first discharge port, the second discharge port, and the third discharge port are arranged sequentially on the bottom plate.

[0011] In some possible implementations, a screen plate with screen holes is provided above the bottom plate of the box.

[0012] In some possible implementations, the screen plate is arranged in a continuously curved shape along the arrangement direction of the first discharge port, the second discharge port, and the third discharge port.

[0013] In some possible implementations, the housing is equipped with a drive device, the output of which is connected to the screen plate to drive the screen plate to rise and fall.

[0014] In some possible implementations, the housing is provided with vertical guide columns, and the screen plate is provided with guide holes. The guide holes and guide columns cooperate to restrict the vertical movement of the screen plate.

[0015] In some possible implementations, a hopper is also included, which is connected to a feed port, one end of a material conveying channel is connected to a second discharge port, and the other end of the material conveying channel extends above the hopper.

[0016] In some possible implementations, a filtration mechanism is also included, located below the first discharge port, for filtering the material discharged from the first discharge port.

[0017] In some possible implementations, the filtering mechanism includes a first sleeve and a second sleeve, both of which are cylindrical. The second sleeve is coaxially and rotatably disposed inside the first sleeve. The second sleeve is provided with sieve holes, and the first sleeve is provided with a feed inlet. The material entering through the feed inlet falls into the second sleeve and is screened.

[0018] In some possible implementations, a receiving gap is formed between the first sleeve and the second sleeve, and a helical blade is provided on the outer periphery of the second sleeve. The second sleeve drives the helical blade to rotate, so as to agitate the material in the receiving gap between the first sleeve and the second sleeve.

[0019] According to the tobacco stem and shred separation device provided in the embodiments of this application, when separating the tobacco stem and shred mixture, the mixture is blown into the internal cavity of the box by the blower assembly. Due to the difference in mass and density between the tobacco stem and shred, they move different distances with the wind, resulting in the shred moving a greater distance and falling into the first area, while the tobacco stem moves a smaller distance and falls into the third area, thus achieving effective separation of tobacco stem and shred. Moreover, for the part of the tobacco stem and shred mixture that is not completely separated, it falls into the second area and is then transported back to the feed port through the material conveying channel for further blowing and separation. This cycle can greatly improve the efficiency of tobacco stem and shred separation and help improve the quality of tobacco. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the tobacco stem and tobacco shred separation device provided in the embodiments of this application;

[0021] Figure 2 A schematic diagram of the tobacco stem and tobacco shred separation device provided in an embodiment of this application from another perspective;

[0022] Figure 3 A schematic diagram of the structure of the tobacco stem and tobacco shred separation device provided in the embodiment of this application after removing one side plate of the box;

[0023] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0024] Figure 5 for Figure 3 A magnified view of a section at point B in the middle;

[0025] Figure 6 A schematic diagram of the structure of the box provided in this application embodiment after removing one side panel and one top panel;

[0026] Figure 7 This is a schematic diagram of the structure of the filtering mechanism provided in the embodiments of this application;

[0027] Figure 8 This is a schematic diagram of the structure of the chute provided in an embodiment of this application. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] like Figures 1-8As shown, this application provides a tobacco stem and shred separation device, applied in the tobacco processing technology, to separate and remove tobacco stems from tobacco shreds. Currently, tobacco stem and shred separation devices widely used in cigarette factories typically include a vertically arranged channel, with some sections featuring continuous curved shapes such as S-shapes. Air is then blown into the channel to transport the mixture of tobacco stems and shreds into it. Due to the density difference between tobacco stems and shreds, the tobacco shreds and tobacco stems are transported in layers within the channel. When discharged from the outlet of the channel, the tobacco stems and shreds are separated. The tobacco stems and shreds are collected separately by different devices to separate them. However, in practical application, it has been found that this tobacco stem and shred separation device has certain drawbacks. The separation effect of tobacco stems and shreds is not ideal, and the separation of tobacco stems and shreds is not thorough enough. As a result, some shreds are mixed in with the separated tobacco stems, and some tobacco stems are mixed in with the separated tobacco shreds, which affects the quality of the tobacco shreds. The tobacco stem and shred separation device of this application aims to improve the separation effect of tobacco stems and shreds, so as to make the separation of tobacco stems and shreds more thorough and improve the quality of tobacco shreds.

[0030] The tobacco stem and shred separation device includes a box body 1, which has an internal cavity and an opening. The internal cavity of the box body 1 is connected to the outside space through the opening, and the opening is located on one side of the box body 1 in the horizontal direction, that is, the opening direction of the box body 1 is horizontal. The box body 1 is also provided with a feeding port 2, which is located on the box body 1 and is positioned close to the opening of the box body 1.

[0031] In this embodiment, the internal cavity of the housing 1 includes a first region 31, a second region 32, and a third region 33. The first region 31, the second region 32, and the third region 33 are arranged sequentially along the orientation of the opening. In other words, the first region 31, the second region 32, and the third region 33 are arranged sequentially in a horizontal direction. The first region 31, the second region 32, and the third region 33 are all located within the internal cavity of the housing 1. The second region 32 is located between the first region 31 and the third region 33. The first region 31 is furthest from the opening of the housing 1, and the third region 33 is closest to the opening of the housing 1. The first area 31 is provided with a first discharge port 41, the second area 32 is provided with a second discharge port 42, and the third area 33 is provided with a third discharge port 43. It also includes a blower assembly 5, which is located outside the housing 1 and close to the opening of the housing 1. The blower assembly 5 is used to blow air into the internal cavity of the housing 1 through the opening. The mixture of tobacco shreds and stems is conveyed into the internal cavity of the housing 1 through the feed port 2. Simultaneously, the blower assembly 5 blows towards the opening of the housing 1, thereby blowing the material into the internal cavity of the housing 1. The blowing direction of the blower assembly 5 is also horizontal and towards the housing. The internal cavity of body 1 is inflated, horizontally blowing the material into the internal cavity of body 1. For the mixture of tobacco stems and shredded tobacco, due to the differences in mass and density, the distances they travel with the airflow are also different. The lighter shredded tobacco travels further with the airflow and falls to the first area 31, where it is discharged and collected through the first discharge port 41. The heavier tobacco stems travel closer with the airflow and fall to the third area 33, where they are discharged and collected through the third discharge port 43. This achieves the separation of tobacco stems and shredded tobacco. If the separation is not thorough, some of the mixture of tobacco stems and shredded tobacco will fall into the middle cavity. In the second region 32 of the part, which is the overlapping area of ​​the tobacco shred region and the tobacco stem region, the mixture of tobacco shreds and tobacco stems that is not completely separated falls into the second region 32 and is discharged through the second discharge port 42. It also includes a material conveying channel 6, which is set between the second discharge port 42 and the feeding port 2. The material conveying channel 6 is used to convey the mixture from the second discharge port 42 to the feeding port 2, so that the incompletely separated material is blown and separated again until it is completely separated. In this way, the effect of separating tobacco stems from tobacco shreds is greatly improved, the tobacco shreds are purer, which helps to improve the quality of tobacco shreds and avoid waste.

[0032] The blower assembly 5 can be a fan, etc. The fan can be mounted on the ground or on other racks via a mounting bracket or other components.

[0033] Preferably, the housing 1 includes a bottom plate, a top plate, and three side plates. The bottom plate, top plate, and three side plates enclose a rectangular space. The top plate is located at the top, the bottom plate is located at the bottom, and the three side plates enclose the outer periphery to form a space with a horizontal opening. The first discharge port 41, the second discharge port 42, and the third discharge port 43 are arranged sequentially on the bottom plate. The second discharge port 42 is located between the first discharge port 41 and the third discharge port 43. The first discharge port 41 is the opening furthest from the housing 1, and the third discharge port 43 is the opening closest to the housing 1, which facilitates the blowing and separation of the mixed materials.

[0034] More preferably, a screen plate 7 is provided above the bottom plate of the housing 1 and can be raised and lowered. The screen plate 7 is provided with screen holes. The screen plate 7 vibrates vertically by repeatedly raising and lowering, and then the material is allowed to pass downward through the first discharge port 41, the second discharge port 42 or the third discharge port 43 to filter and remove impurities from the material, which is beneficial to improving the quality of tobacco.

[0035] In one example, the screen plate 7 is continuously curved along the arrangement direction of the first discharge port 41, the second discharge port 42 and the third discharge port 43. The screen plate 7 is continuously curved in the direction away from the opening of the box 1, forming a wave shape. For the continuously curved shape, there are at least 10 peaks in the first region 31, the second region 32 and the third region 33. In this way, the material can be restricted in position at the trough. During the repeated up and down vibration of the screen plate 7, the mixing of materials between the first region 31, the second region 32 and the third region 33 can be avoided, which is conducive to the material passing through the screen holes for screening.

[0036] For the vertical vibration of the screen plate 7, a drive device is installed on the housing 1. The output end of the drive device is connected to the screen plate 7, thereby driving the screen plate 7 to rise and fall. For example, a drive motor can be installed on the top of the top plate of the housing 1. Multiple drive rods 8 are connected to the top of the screen plate 7. The drive rods 8 are vertical and movable upward through the top plate. The top ends of each drive rod 8 are connected together through a drive frame 9. The output end of the drive motor is connected to the drive frame 9 through a crank connecting rod mechanism 10, thereby achieving the vibration of the screen plate 7 through the rotation of the drive motor.

[0037] In this embodiment, a vertical guide post 11 is provided on the housing 1, and a guide hole is provided on the screening plate 7. The guide hole and the guide post 11 cooperate with each other to restrict the movement of the screening plate 7 in the vertical direction, making the movement of the screening plate 7 more vertical, which is conducive to the downward screening of materials and avoids the mixing of materials between the first region 31, the second region 32 and the third region 33. In this embodiment, the screening plate 7 is close to the bottom plate, and a guide post 11 can be provided on one side plate. A transition plate 12 is provided on the side of the screening plate 7 corresponding to the guide post 11. The transition plate 12 extends vertically upward, and a guide plate 13 is provided on the side of the transition plate 12 facing the guide post 11. The guide hole is provided on the guide plate 13 to realize the vertical movement limit of the screening plate 7.

[0038] Preferably, it also includes a hopper 14, which is located above the feed port 2 and the bottom of the hopper 14 is connected to the feed port 2. Other feeding devices can supply tobacco materials to the hopper 14 to complete the material supply. In this embodiment, the feed port 2 is set on the top plate and penetrates the top plate. The feed port 2 is located on the top plate near the opening of the box 1. The hopper 14 is connected to the top of the top plate and the bottom of the hopper 14 is connected to the feed port 2. One end of the material conveying channel 6 is connected to the second discharge port 42, and the other end of the material conveying channel 6 extends to the top of the hopper 14. The mixed tobacco in the second area 32 is transported back to the hopper 14 for screening again through the material conveying channel 6, which helps to improve the separation effect of tobacco shreds and tobacco stems. In this embodiment, the material conveying channel 6 is preferably a wind-powered conveying pipe. A wind-powered conveying drive component such as a fan is set in the wind-powered conveying pipe to facilitate the conveying of tobacco shreds.

[0039] A conveyor belt 15 can also be installed below the third discharge port 43 in the third area 33 to transport the separated tobacco stems to a designated location.

[0040] Preferably, it also includes a filtering mechanism located below the first discharge port 41. The material discharged from the first discharge port 41 is tobacco. In order to further improve the purity of the tobacco, the tobacco material discharged from the first discharge port 41 is filtered again by the filtering mechanism.

[0041] In one example, the filtering mechanism includes a first sleeve 161 and a second sleeve 162. Both the first sleeve 161 and the second sleeve 162 are cylindrical. The second sleeve 162 is coaxially and rotatably disposed inside the first sleeve 161. The second sleeve 162 is provided with sieve holes. The first sleeve 161 is provided with a feed inlet 17. The material entering through the feed inlet 17 falls into the second sleeve 162 and is screened. In this embodiment, one end of the second sleeve 162 is sealed and the other end is open. A drive motor is provided at the sealed end of the second sleeve 162. The output end of the drive motor is coaxially connected to the second sleeve 162. The drive motor can be connected to the housing 1 through a fixing bracket. The first sleeve 161 can also be connected to the housing 1 through a fixing bracket. The housing 1 allows the second sleeve 162 to rotate within the first sleeve 161. A sieve is perforated around the periphery of the second sleeve 162. Both the first and second sleeves 161 are horizontally positioned. A feed inlet 17 is located at the top of the first sleeve 161, aligned with and below the first discharge outlet 41. This allows material discharged from the first discharge outlet 41 to fall through the feed inlet 17 onto the outer periphery of the second sleeve 162, creating a receiving gap between the first and second sleeves 161. This gap allows the tobacco to move freely. A spiral blade 18 is provided on the outer periphery of the second sleeve 162, with its inner periphery connected to the second sleeve 161. 2. The outer periphery of the spiral blade 18 slides in contact with the inner periphery of the first sleeve 161. When the second sleeve 162 rotates, it drives the spiral blade 18 to rotate, which in turn moves the tobacco material in the accommodating gap between the first sleeve 161 and the second sleeve 162. This allows the tobacco to be screened through the sieve holes on the second sleeve 162. Large tobacco stems are discharged through the gap between the first sleeve 161 and the second sleeve 162 under the action of the spiral blade 18 and collected by designated equipment. Small tobacco shreds pass through the sieve holes on the second sleeve 162 and enter the interior of the second sleeve 162. A chute is provided, which can be connected to the housing 1 by a fixing frame. The chute extends into the second sleeve 162. Inside 62, the chute includes a semi-circular cross-section support plate 19. The middle of the support plate 19 is bent downwards and arched. An inclined plate 20 is provided on the concave surface of the support plate 19. The inclined plate 20 is flat. The support plate 19 extends coaxially into the second sleeve 162. Along the axial direction of the second sleeve 162, the height of the inclined plate 20 near the opening end of the second sleeve 162 is less than the height of the inclined plate 20 near the sealing end of the second sleeve 162. Thus, the tobacco shreds filtered into the second sleeve 162 fall onto the inclined plate 20 and are discharged from the second sleeve 162 through the inclined plate 20, making it convenient to collect through designated equipment. In this way, multi-level screening of tobacco shreds can be achieved, which is conducive to improving the purity and quality of tobacco shreds.

[0042] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0043] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0044] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A tobacco stem and tobacco shred separation device, characterized in that, include: The box has an internal cavity and an opening. The internal cavity of the box communicates with the outside through the opening, and the opening is located on one side of the box in the horizontal direction. The feeding port is located in the box body and near the opening; The internal cavity of the box includes a first region, a second region, and a third region arranged sequentially along the direction parallel to the opening. The first region, the second region, and the third region are respectively provided with a first discharge port, a second discharge port, and a third discharge port. A blower assembly, located near the opening of the housing, is used to blow air into the internal cavity of the housing; The material conveying channel is located between the second discharge port and the feed port, and is used to convey the material discharged from the second discharge port to the feed port.

2. The tobacco stem and tobacco shred separation device according to claim 1, characterized in that: The box body includes a bottom plate, a top plate, and three side plates. The bottom plate, top plate, and three side plates form the box body. The first discharge port, the second discharge port, and the third discharge port are arranged sequentially on the bottom plate.

3. The tobacco stem and tobacco shred separation device according to claim 2, characterized in that: A screen plate is mounted on the bottom plate of the box and can be raised and lowered. The screen plate has screen holes.

4. The tobacco stem and tobacco shred separation device according to claim 3, characterized in that: The screen plate is arranged in a continuously curved shape along the arrangement direction of the first discharge port, the second discharge port and the third discharge port.

5. The tobacco stem and tobacco shred separation device according to claim 4, characterized in that: The housing is equipped with a drive device, the output end of which is connected to the screen plate to drive the screen plate to rise and fall.

6. The tobacco stem and tobacco shred separation device according to claim 5, characterized in that: The box body is equipped with vertical guide columns, and the screen plate is equipped with guide holes. The guide holes and guide columns work together to restrict the vertical movement of the screen plate.

7. The tobacco stem and tobacco shred separation device according to claim 1, characterized in that: It also includes a hopper, which is connected to the feed port, one end of the material conveying channel is connected to the second discharge port, and the other end of the material conveying channel extends above the hopper.

8. The tobacco stem and tobacco shred separation device according to claim 1, characterized in that: It also includes a filtration mechanism located below the first discharge port, which is used to filter the material discharged from the first discharge port.

9. The tobacco stem and tobacco shred separation device according to claim 8, characterized in that: The filtration mechanism includes a first sleeve and a second sleeve, both of which are cylindrical. The second sleeve is coaxially and rotatably disposed inside the first sleeve. The second sleeve is provided with sieve holes, and the first sleeve is provided with a feed inlet. The material entering through the feed inlet falls into the second sleeve and is screened.

10. A tobacco stem and tobacco shred separation device according to claim 9, characterized in that: A receiving gap is formed between the first sleeve and the second sleeve. A spiral blade is provided on the outer periphery of the second sleeve. The second sleeve drives the spiral blade to rotate, so as to move the material in the receiving gap between the first sleeve and the second sleeve.

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