Tobacco shred winnowing device

Abstract

The utility model provides a tobacco shred winnowing device which is used for removing impurities in tobacco shred and comprises a machine shell, a winnowing device, a winnowing device body and a winnowing device, the machine shell comprises a feeding end and a discharging end, the height of the discharging end is larger than that of the feeding end, and a winnowing channel extending from the feeding end to the discharging end is arranged in the machine shell; the feeding end is provided with a feeding port, an air supply port and a dust collection port which are communicated with the winnowing channel, and the discharging end is provided with a discharging port communicated with the winnowing channel. The feeding port is formed above the winnowing channel, the dust collecting port is formed in the lowest position of the winnowing channel, and the air supply port is formed in the end face of the feeding end. The fan is used for blowing air flow into the air supply port so as to separate tobacco shreds entering the feeding port from impurities; the dust collecting roller is arranged below the dust collecting opening, the outer circumferential surface of the dust collecting roller covers the dust collecting opening, and a plurality of dust collecting grooves are formed in the outer circumferential surface of the dust collecting roller; when the dust collecting grooves rotate around the axes of the dust collecting grooves, the dust collecting grooves are sequentially communicated with the dust collecting opening. The stability of impurity separation efficiency of the winnowing device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing technology, and in particular to a tobacco air separation device. Background Technology

[0002] Currently, cigarette factories use air separation devices to remove impurities from tobacco. After the tobacco is fed into the air separation device, a fan inside the device sprays airflow onto the tobacco. Tobacco and impurities are affected by the airflow differently; tobacco has a lower density and less inertia, so it is blown a greater distance by the airflow; impurities have a higher density and less inertia, so they are blown a shorter distance by the airflow. This causes impurities to accumulate at the bottom of the air separation device, making it easier to clean the impurities separated from the tobacco by the air separation device.

[0003] In existing technology, the air classifier has a collection port at the bottom, and a collection box is installed on top of the collection port. The opening of the collection box is connected to the collection port, and the collection box covers the collection port to prevent air leakage. When there is a large amount of impurities in the collection box, it needs to be removed and the impurities inside the collection box emptied. However, after removing the collection box, the airflow inside the air classifier flows out of the air classifier through the collection port, reducing the airflow that blows the tobacco. This results in the tobacco being blown a shorter distance and thus unable to separate from the impurities. Therefore, the efficiency of the air classifier in separating impurities from tobacco is unstable, and its separation efficiency is greatly affected by the collection box. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem of poor stability in the impurity separation efficiency of air-separation devices. This invention provides an air-separation device for tobacco shreds that can improve the stability of the impurity separation efficiency of air-separation devices.

[0005] To address the aforementioned technical problems, this utility model provides a tobacco air separation device for removing impurities from tobacco. The air separation device includes:

[0006] The casing includes a feed end and a discharge end, with the discharge end being higher than the feed end. The casing contains an air separation channel extending from the feed end to the discharge end. The feed end has a feed inlet, an air outlet, and a dust collection port connected to the air separation channel. The discharge end has a discharge outlet connected to the air separation channel. The feed inlet is located above the feed end, the dust collection port is located at the lowest point of the air separation channel, and the air outlet is located on the end face of the feed end.

[0007] A blower is installed on the air outlet. The blower is used to blow air into the air outlet to separate the tobacco shreds from impurities entering the feed inlet.

[0008] The dust collection roller is located below the dust collection port, and its outer circumferential surface covers the dust collection port. Multiple dust collection grooves are provided on the outer circumferential surface of the dust collection roller. The dust collection roller can rotate around its own axis, and each dust collection groove is connected to the dust collection port in sequence when the dust collection roller rotates.

[0009] Optionally, the bottom of the housing is provided with a first roller cavity extending horizontally along a first direction, which is perpendicular to the extension direction of the air separation channel; the dust collection roller is disposed in the first roller cavity, the upper part of the first roller cavity is connected to the dust collection port, and the lower part of the first roller cavity is connected to the outside.

[0010] Optionally, the first roller cavity is a cylindrical cavity, and a first rotating shaft extending along a first direction is provided inside the first roller cavity; a first shaft hole is provided on the dust collecting roller, and the first shaft hole is sleeved on the first rotating shaft; the axes of the first roller cavity, the first rotating shaft, the first shaft hole and the dust collecting roller are all coincident; the diameter of the first roller cavity is equal to the diameter of the dust collecting roller.

[0011] Optionally, the discharge end is provided with a discharge roller, and multiple collection grooves are provided on the outer circumference of the discharge roller, with a screen between two adjacent collection grooves; the discharge roller can rotate around its own axis, and each collection groove is connected to the discharge port in sequence when the discharge roller rotates.

[0012] Optionally, the discharge end is provided with a second roller cavity extending horizontally along the first direction, the discharge roller is disposed in the second roller cavity, the second roller cavity is provided with an input port on the side near the feed end and an output port on the side away from the feed end, the input port is connected to the discharge port and the output port is connected to the downstream material-using equipment.

[0013] Optionally, the second roller cavity is a cylindrical cavity, and a second rotating shaft extending along the first direction is provided inside the second roller cavity; a second shaft hole is provided on the discharge roller, and the second shaft hole is sleeved on the second rotating shaft; the axes of the second roller cavity, the second rotating shaft, the second shaft hole and the discharge roller are all coincident; the diameter of the second roller cavity is equal to the diameter of the discharge roller.

[0014] Optionally, the discharge end is also provided with an air outlet that communicates with the second roller cavity. The air outlet, input port and output port are evenly distributed along the circumference of the second roller cavity, and the air outlet is located above the discharge roller.

[0015] Optionally, the number of collection slots is 6.

[0016] Optionally, the fan's air volume is 22000m³. 3 / h.

[0017] Optionally, the bottom surface of the air separation channel includes a first lifting surface and a second lifting surface arranged sequentially along the tobacco conveying direction, wherein the inclination angle of the second lifting surface relative to the horizontal plane is greater than the inclination angle of the first lifting surface relative to the horizontal plane.

[0018] Compared with the prior art, this utility model has the following beneficial effects:

[0019] This invention utilizes an upward-sloping air-separation channel, employing a fan to blow tobacco shreds into the channel from the feed end, with the dust collection port located at the lowest point of the channel. This allows low-density, low-inertia tobacco shreds to be lifted by the airflow to the output end and discharged from the outlet, while high-density, low-inertia impurities, after flowing away from the fan area, fall onto the bottom surface of the air-separation channel and slide down to the dust collection port. A rotatable dust collection roller is installed at the dust collection port, with multiple dust collection grooves on its outer circumference. When the dust collection groove rotates to connect with the dust collection port, impurities entering the port fall into the groove; when the groove rotates downwards, impurities naturally fall out of the air-separation device. Compared to existing air-separation devices, this invention prevents pressure fluctuations within the air-separation channel by keeping the dust collection port separate from the outside during impurity removal, thus improving the efficiency and stability of impurity separation. Attached Figure Description

[0020] Figure 1 This diagram shows a structural view of an air separation device provided in an embodiment of the present invention.

[0021] Figure label:

[0022] 1. Casing, 2. Feeding end, 3. Discharge end, 4. Air separation channel, 5. Feed inlet, 6. Air outlet, 7. Discharge outlet, 8. Dust collection port, 9. Fan, 10. Dust collection roller, 11. Dust collection trough, 12. First roller cavity, 13. First rotating shaft, 14. First shaft hole, 15. Discharge roller, 16. Collection trough, 17. Screen, 18. Second roller cavity, 19. Input port, 20. Output port, 21. Second rotating shaft, 22. Second shaft hole, 23. First lifting surface, 24. Second lifting surface. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0024] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0026] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0027] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] This utility model provides a tobacco air separation device for removing impurities from tobacco, such as... Figure 1 As shown, the air separation device includes a housing 1, a fan 9, and a dust collection roller 10. The housing 1 includes a feed end 2 and a discharge end 3, with the discharge end 3 being higher than the feed end 2. An air separation channel 4 extends from the feed end 2 to the discharge end 3 within the housing 1. The feed end 2 has a feed inlet 5, an air outlet 6, and a dust collection port 8 connected to the air separation channel 4. The discharge end 3 has a discharge outlet 7 connected to the air separation channel 4. The feed inlet 5 is located above the feed end 2, the dust collection port 8 is located at the lowest point of the air separation channel 4, and the air outlet 6 is located on the end face of the feed end 2. The fan 9 is located on the air outlet 6 and is used to blow airflow into the air outlet 6 to separate the tobacco entering the feed inlet 5 from impurities. The dust collection roller 10 is located below the dust collection port 8, and the outer circumferential surface of the dust collection roller 10 covers the dust collection port 8. Multiple dust collection grooves 11 are provided on the outer circumferential surface of the dust collection roller 10. The dust collection roller 10 can rotate around its own axis. When the dust collection roller 10 rotates, each dust collection groove 11 is connected to the dust collection port 8 in sequence.

[0030] By adopting the above technical solution, the height of the discharge end 3 is set higher than that of the feed end 2, making the air classification channel 4 tilt upward. The blower 9 blows the tobacco shreds entering the air classification channel 4 from the feed end 2, allowing the low-density, low-inertia tobacco shreds to be lifted by the airflow to the output end and output from the discharge port 7. High-density, high-inertia impurities, after flowing away from the blower 9, will fall onto the bottom surface of the air classification channel 4 and slide down. The dust collection port 8 is located at the lowest point of the air classification channel 4, facilitating impurities to slide down the bottom surface of the air classification channel 4 and enter the dust collection port 8. A rotatable dust collection roller 10 is installed at the dust collection port 8, and multiple dust collection grooves 11 are provided on the outer circumference of the dust collection roller 10. When the dust collection groove 11 rotates to connect with the dust collection port 8, the impurities entering the dust collection port 8 fall into the dust collection groove 11. When the dust collection groove 11 rotates downward, the impurities in the dust collection groove 11 can fall outside the air classification device. Covering the dust collection port 8 with the outer circumferential surface of the dust collection roller 10 prevents airflow from leaking out of the dust collection port 8 within the air separation channel 4. Compared to existing air separation devices, this application prevents the dust collection port 8 from being connected to the outside environment when cleaning impurities from the air separation device, thus preventing air pressure fluctuations within the air separation channel 4 and avoiding leakage of tobacco shreds from the dust collection port 8, thereby improving the stability of the impurity separation efficiency of the air separation device.

[0031] Furthermore, such as Figure 1 As shown, the bottom of the housing 1 is provided along the first direction ( Figure 1 The first roller cavity 12 extends horizontally (as shown in the X direction), with its first direction perpendicular to the extension direction of the air separation channel 4. A dust collection roller 10 is disposed within the first roller cavity 12, with its upper part connected to the dust collection port 8 and its lower part connected to the outside. During the rotation of the dust collection roller 10, each dust collection trough 11 sequentially connects to the dust collection port 8 and the outside. When the dust collection trough 11 faces upwards, impurities from the dust collection port 8 slide into the dust collection trough 11. When the dust collection trough 11 rotates to a position below the dust collection roller 10, its opening faces downwards, and impurities within the dust collection trough 11 fall outside the air separation device. Specifically, a recycling device can be installed below the dust collection roller 10 to collect the impurities discharged from the dust collection trough 11 and perform harmless treatment.

[0032] For example, the number of dust collection troughs 11 can be two, such as Figure 1 As shown, two dust collection troughs 11 are disposed opposite to each other on the outer circumferential surface of the dust collection roller 10. When one dust collection trough 11 is connected to the dust collection port 8, the other dust collection trough 11 is connected to the outside. The two dust collection troughs 11 alternately receive the impurities output from the dust collection port 8 and alternately transport the impurities to the outside, thereby improving the efficiency of impurity discharge.

[0033] Furthermore, such as Figure 1As shown, the first roller cavity 12 is a cylindrical cavity, and the diameter of the first roller cavity 12 is equal to the diameter of the dust collecting roller 10. This allows the dust collecting roller 10 to occupy the entire space within the first roller cavity 12, preventing airflow from the air separation channel 4 from entering the first roller cavity 12 through the dust collection port 8 and leaking to the outside, and maintaining stable air pressure within the air separation channel 4. This prevents the tobacco flow rate from decreasing due to excessively low air pressure, which would prevent complete separation from impurities, and also avoids the leakage of tobacco from the dust collection port 8 under the action of airflow. Specifically, the first roller cavity 12 is provided with a first rotating shaft 13 extending in a first direction; the dust collecting roller 10 is provided with a first shaft hole 14, which is sleeved on the first rotating shaft 13. The axes of the first roller cavity 12, the first rotating shaft 13, the first shaft hole 14, and the dust collecting roller 10 are all coincident, allowing the dust collecting roller 10 to rotate smoothly within the first roller cavity 12. In this embodiment, the first roller cavity 12 and the dust collection roller 10 are fitted with a clearance. A lubrication structure or a lubricant can also be provided between the inner walls of the dust collection roller 10 and the first roller cavity 12 to reduce the friction between the dust collection roller 10 and the first roller cavity 12.

[0034] Furthermore, such as Figure 1 As shown, the discharge end 3 is equipped with a discharge roller 15, and multiple collection grooves 16 are provided on the outer circumference of the discharge roller 15. A screen 17 is provided between two adjacent collection grooves 16. The discharge roller 15 can rotate around its own axis. When the discharge roller 15 rotates, each collection groove 16 is connected to the discharge port 7 in sequence. The screen 17 can trap the tobacco entering the collection groove 16 from the discharge port 7, causing the tobacco to gather in the collection groove 16. When the collection groove 16 rotates away from the discharge port 7, the airflow passes through the screen 17 and blows the tobacco in the collection groove 16 out of the collection groove 16, so that the tobacco can be output in clusters outside the air separation device. This avoids the situation where the tobacco is scattered by the airflow and is difficult to collect when it is output from the discharge port 7, and also prevents the tobacco from scattering in the workshop and causing environmental pollution.

[0035] Furthermore, such as Figure 1As shown, the second roller cavity 18 is a cylindrical cavity, and its diameter is equal to that of the discharge roller 15, specifically in a clearance fit. The discharge roller 15 occupies the entire space within the second roller cavity 18 to prevent the airflow carrying tobacco from leaking between the second roller cavity 18 and the discharge roller 15 to the output port 20. Inevitably, during the rotation of the discharge roller 15, the edge of the opening of the collecting trough 16 will squeeze the tobacco located at the discharge port 7 into the space between the discharge roller 15 and the inner wall of the second roller cavity 18. However, when this part of the tobacco rotates to the output port 20, it will be blown into the output port 20 by the airflow, without affecting the tobacco output. Specifically, the second roller cavity 18 is provided with a second rotating shaft 21 extending along the first direction; the discharge roller 15 is provided with a second shaft hole 22, which is sleeved on the second rotating shaft 21; the axes of the second roller cavity 18, the second rotating shaft 21, the second shaft hole 22, and the discharge roller 15 are all coincident to ensure that the discharge roller 15 can rotate stably within the second roller cavity 18. In this embodiment, the second roller cavity 18 and the discharge roller 15 are clearance-fitted to reduce the friction between the dust collecting roller 10 and the first roller cavity 12.

[0036] Furthermore, such as Figure 1 As shown, the discharge end 3 is also provided with an air outlet connected to the second roller cavity 18. The air outlet, inlet 19, and outlet 20 are evenly distributed along the circumference of the second roller cavity 18, and the air outlet is located above the discharge roller 15. Specifically, when the collecting trough 16 is connected to the discharge port 7, after the screen 17 intercepts the tobacco, the airflow passes through the screen 17 and flows to the outside through the air outlet and outlet 20. Since the continuous presence of tobacco between the inlet 19 and the outlet 20 will cause airflow obstruction, it will slow down the airflow speed in the air separation channel 4, affecting the separation effect of tobacco and impurities. By setting the air outlet, the airflow output from the discharge port 7 can flow to the outside through the air outlet, avoiding the reduction of airflow speed in the air separation channel 4.

[0037] Furthermore, such as Figure 1 As shown, there are six collection troughs 16, and the six collection troughs 16 are evenly distributed on the outer circumferential surface of the discharge roller 15. The size of the opening of the collection trough 16 along the circumference of the second roller cavity 18 is smaller than the distance between the air outlet and the inlet 19 along the circumference of the second roller cavity 18. This prevents the inlet 19 from connecting with the air outlet due to the excessive size of the collection trough 16 along the circumference of the second roller cavity 18, and prevents the tobacco entering the collection trough 16 from the inlet 19 from leaking out of the air outlet.

[0038] Furthermore, the air volume of fan 9 is 22000 m3 / h.

[0039] Furthermore, such as Figure 1As shown, the bottom surface of the air separation channel 4 includes a first lifting surface 23 and a second lifting surface 24 arranged sequentially along the tobacco conveying direction. The angle of inclination of the second lifting surface 24 relative to the horizontal plane is greater than that of the first lifting surface 23 relative to the horizontal plane. Specifically, since impurities have a higher density and tend to sink to the bottom of the air separation channel 4, there are more impurities in the tobacco near the bottom surface of the air separation channel 4. Heavier impurities can slide down the first lifting surface 23 into the dust collection port 8. Lighter impurities will continue to rise along the first lifting surface 23 under the push of the airflow to the junction of the second lifting surface 24 and the first lifting surface 23. Since the angle of inclination of the second lifting surface 24 relative to the horizontal plane is larger, it increases the resistance to the upward movement of impurities, thereby separating the lighter impurities from the tobacco.

[0040] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A tobacco air separation device for removing impurities from tobacco, characterized in that, The air separation device includes: The housing includes a feed end and a discharge end, with the discharge end being higher than the feed end. An air-separating channel extends from the feed end to the discharge end within the housing. The feed end has a feed inlet, an air outlet, and a dust collection port connected to the air-separating channel. The discharge end has a discharge outlet connected to the air-separating channel. The feed inlet is located above the feed end, the dust collection port is located at the lowest point of the air-separating channel, and the air outlet is located on the end face of the feed end. A fan is provided on the air outlet, and the fan is used to blow airflow into the air outlet to separate the tobacco shreds entering the feed inlet from impurities; A dust collection roller is disposed below the dust collection port, and the outer circumferential surface of the dust collection roller covers the dust collection port. The outer circumferential surface of the dust collection roller is provided with a plurality of dust collection grooves. The dust collection roller is capable of rotating around its own axis, and when the dust collection roller rotates, each of the dust collection grooves is sequentially connected to the dust collection port.

2. The air separation device as described in claim 1, characterized in that, The bottom of the housing is provided with a first roller cavity extending horizontally along a first direction, which is perpendicular to the extension direction of the air separation channel; the dust collection roller is disposed in the first roller cavity, the upper part of the first roller cavity is connected to the dust collection port, and the lower part of the first roller cavity is connected to the outside.

3. The air separation device as described in claim 2, characterized in that, The first roller cavity is a cylindrical cavity, and a first rotating shaft extending along a first direction is provided inside the first roller cavity; the dust collecting roller is provided with a first shaft hole, and the first shaft hole is sleeved on the first rotating shaft; the axes of the first roller cavity, the first rotating shaft, the first shaft hole and the dust collecting roller are all coincident; the diameter of the first roller cavity is equal to the diameter of the dust collecting roller.

4. The air separation device as described in claim 3, characterized in that, The discharge end is provided with a discharge roller, and the outer circumference of the discharge roller is provided with a plurality of collection grooves, and a screen is provided between two adjacent collection grooves; the discharge roller can rotate around its own axis, and when the discharge roller rotates, each collection groove is connected to the discharge port in sequence.

5. The air separation device as described in claim 4, characterized in that, The discharge end is provided with a second roller cavity extending horizontally along a first direction. The discharge roller is disposed in the second roller cavity. The second roller cavity has an input port on the side near the feed end and an output port on the side away from the feed end. The input port is connected to the discharge port, and the output port is connected to the downstream material-using equipment.

6. The air separation device as described in claim 5, characterized in that, The second roller cavity is a cylindrical cavity, and a second rotating shaft extending along the first direction is provided inside the second roller cavity; the discharge roller is provided with a second shaft hole, and the second shaft hole is sleeved on the second rotating shaft; the axes of the second roller cavity, the second rotating shaft, the second shaft hole and the discharge roller are all coincident; the diameter of the second roller cavity is equal to the diameter of the discharge roller.

7. The air separation device as described in claim 6, characterized in that, The discharge end is also provided with an air outlet that communicates with the second roller cavity. The air outlet, the input port and the output port are evenly distributed along the circumference of the second roller cavity, and the air outlet is located above the discharge roller.

8. The air separation device as described in claim 7, characterized in that, The number of collection slots is 6.

9. The air separation device as described in claim 8, characterized in that, The air volume of the fan is 22000m³. 3 / h.

10. The air separation device as described in claim 9, characterized in that, The bottom surface of the air separation channel includes a first lifting surface and a second lifting surface arranged sequentially along the tobacco conveying direction. The angle of inclination of the second lifting surface relative to the horizontal plane is greater than the angle of inclination of the first lifting surface relative to the horizontal plane.

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