Tobacco winnowing device and method for regulating a tobacco winnowing device

Abstract

The present application relates to the technical field of tobacco production, and discloses a tobacco winnowing device and a method for regulating and controlling the same. The tobacco winnowing device is used for separating tobacco stems from tobacco shreds in tobacco material and winnowing the tobacco shreds. The tobacco winnowing device comprises, in sequence, a feeding mechanism, a first winnowing pipeline, a transfer mechanism, a second winnowing pipeline, a cyclone separator and a fan. The feeding mechanism is used for conveying the tobacco material to the first winnowing pipeline for first-stage winnowing. The transfer mechanism comprises a box body, a guide plate assembly and a second vibrating conveyor. The guide plate assembly comprises a first guide plate and a second guide plate. The first guide plate guides the tobacco material after first-stage winnowing, and the second guide plate guides the tobacco material in the internal chamber of the box body. The cyclone separator is used for cyclone separation of the tobacco shreds. The cyclone separator can improve the removal effect of the tobacco stems in the tobacco material and avoid the tobacco shreds in the tobacco material being mistakenly removed, thereby improving the winnowing effect of the tobacco material.

Description

Technical Field

[0001] This invention relates to the field of tobacco production technology, and in particular to a tobacco air separation device and a method for controlling the tobacco air separation device. Background Technology

[0002] In the cigarette manufacturing industry, the tobacco air separation process directly restricts product quality and economic benefits. Among them, the separation of tobacco shreds and stems in tobacco materials is a key step. Specifically, in the separation process, if the stem content in the tobacco shreds after air separation is required to be low, the amount of stems removed must be increased. This will increase the amount of tobacco shreds carried away by the stems, making the subsequent secondary stem-shred separation of the stems more difficult. If the amount of stems removed is reduced, some of the lighter stems will enter the smoking belt through the air chamber, causing a series of quality problems such as increased cigarette weight deviation, uneven cigarette hardness, and "punctures" or roughness on the cigarette surface.

[0003] Therefore, how to improve the removal of tobacco stems from tobacco materials while avoiding the accidental removal of tobacco shreds has become an urgent technical problem to be solved. Summary of the Invention

[0004] The purpose of this invention is to provide a tobacco air separation device and a method for controlling the tobacco air separation device, which can improve the removal effect of tobacco stems in tobacco materials, while avoiding the accidental removal of tobacco shreds in tobacco materials, thereby improving the air separation effect of tobacco materials.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A tobacco air separation device is used to separate tobacco shreds and stems from tobacco materials and to perform air separation on the tobacco shreds. The tobacco air separation device includes a feeding mechanism, a first air separation pipe, a transfer mechanism, a second air separation pipe, a cyclone separator, and a fan connected in sequence. The feeding mechanism is used to transport the tobacco material to the first air separation pipe for primary air separation. The transfer mechanism includes a housing, a guide plate assembly, and a second vibrating conveyor. The guide plate assembly includes a first guide plate and a second guide plate, with the same side ends of the first guide plate and the second guide plate rotatably connected to the inner wall of the housing. The second vibrating conveyor is disposed at the bottom of the housing and below the first guide plate and the second guide plate. The first guide plate is used to guide the tobacco material after primary air separation, and the second guide plate is used to guide the tobacco material in the internal cavity of the housing so that the tobacco material can fall to the second vibrating conveyor. The second vibrating conveyor is used to transport the tobacco material to the second air separation pipe for secondary air separation. The cyclone separator is used to perform cyclone separation on the tobacco material.

[0007] As an optional embodiment of the tobacco air separation equipment provided by the present invention, both the first air separation pipe and the second air separation pipe have inlets on their side walls; the feeding mechanism includes a first vibrating conveyor, the output end of the first vibrating conveyor is aligned with the inlet of the first air separation pipe, the first vibrating conveyor is used to transport the tobacco material through the inlet of the first air separation pipe to the first air separation pipe for primary air separation, and the output end of the second vibrating conveyor is aligned with the inlet of the second air separation pipe, the second vibrating conveyor is used to transport the tobacco material through the inlet of the second air separation pipe to the second air separation pipe for secondary air separation.

[0008] As an optional embodiment of the tobacco air separation equipment provided by the present invention, both ends of the first air separation pipe and the second air separation pipe include a top opening and a bottom opening. The top opening of the first air separation pipe and the feed inlet of the second air separation pipe are respectively connected to the internal cavity of the housing. The top opening of the second air separation pipe is connected to the cyclone separator. The top opening of the first air separation pipe is used for the discharge of the tobacco material after primary air separation. The top opening of the second air separation pipe is used for the discharge of the tobacco shreds after air separation. The bottom openings of the first air separation pipe and the second air separation pipe are both used for the discharge of the tobacco stems during air separation.

[0009] As an optional solution to the tobacco air separation equipment provided by the present invention, the cyclone separator includes an inlet, an exhaust outlet and a discharge outlet. The inlet is connected to the top opening of the second air separation pipe, the exhaust outlet is connected to the air intake of the blower, and the discharge outlet is used to discharge the tobacco shreds after cyclone separation.

[0010] As an optional solution to the tobacco air separation equipment provided by the present invention, the feeding mechanism further includes a first image processing module, which is used to detect the tobacco stem content and grade of the tobacco material before the first-stage air separation. The cyclone separator further includes a second image processing module, which is used to detect the tobacco stem content in the tobacco shreds after cyclone separation.

[0011] As an optional solution to the tobacco air separation equipment provided by the present invention, the feeding mechanism further includes a first moisture sensor, which is used to detect the moisture content in the tobacco material before the first-stage air separation, and the cyclone separator further includes a second moisture sensor, which is used to detect the moisture content in the tobacco shreds after cyclone separation.

[0012] As an optional solution to the tobacco air separation equipment provided by the present invention, the feeding mechanism further includes a first weight sensor, which is used to detect the weight of the tobacco material before the first-stage air separation, and the cyclone separator further includes a second weight sensor, which is used to detect the weight of the tobacco shreds after cyclone separation.

[0013] As an optional solution to the tobacco air separation equipment provided by the present invention, the tobacco air separation equipment further includes a mounting frame, on which the feeding mechanism, the first air separation pipe, the transfer mechanism and the second air separation pipe are all mounted.

[0014] Secondly, the present invention also provides a method for controlling a tobacco air separation device, applied to the aforementioned tobacco air separation device, the method comprising:

[0015] S1. Input the tobacco material into the tobacco air separation equipment;

[0016] S2. The tobacco stem content and moisture content of the tobacco material are detected;

[0017] S3. Perform air separation on the tobacco material;

[0018] S4. Detect the stem content and moisture content of the tobacco shreds after air separation, and determine whether the stem content and moisture content of the tobacco shreds meet the preset standards; when the stem content and moisture content of the tobacco shreds both meet the preset standards, proceed to step S5; when at least one of the stem content and moisture content of the tobacco shreds is unqualified, proceed to step S6.

[0019] S5. Obtain the air separation parameters and complete the adjustment;

[0020] S6. Adjust the fan frequency, guide plate angle and feed flow rate of the tobacco material in the tobacco air separation equipment, and execute steps S3 and S4 again.

[0021] As an optional embodiment of the control method for the tobacco air separation equipment provided by the present invention, step S1 includes:

[0022] Step S11: Determine the grade of the tobacco material and obtain the preset standard corresponding to the tobacco material;

[0023] Step S12: Input the tobacco material into the tobacco air separation equipment.

[0024] The beneficial effects of this invention are:

[0025] A tobacco air separation device is used to separate tobacco shreds and stems from tobacco materials and to perform air separation on the tobacco shreds. The tobacco air separation device includes a feeding mechanism, a first air separation pipe, a transfer mechanism, a second air separation pipe, a cyclone separator, and a blower connected in sequence. The feeding mechanism is used to transport the tobacco material to the first air separation pipe for primary air separation. The transfer mechanism includes a housing, a guide plate assembly, and a second vibrating conveyor. The guide plate assembly includes a first guide plate and a second guide plate. One end of the first guide plate and one end of the second guide plate are rotatably connected to the inner wall of the housing. The second vibrating conveyor is located at the bottom of the housing and below the first and second guide plates. The first guide plate is used to guide the tobacco material after primary air separation, and the second guide plate is used to guide the tobacco material in the internal chamber of the housing. Material guiding allows the tobacco material to fall onto the second vibrating conveyor, which then transports it to the second air separation pipe for secondary air separation. A cyclone separator separates the tobacco shreds using cyclone separation. Based on the secondary air separation, the first and second guide plates of the transfer mechanism combine drift and flotation of the tobacco material, thereby improving the separation of tobacco shreds, stems, and even other impurities. This, combined with the vibration of the second vibrating conveyor, further enhances the separation of tobacco shreds and stems, thus improving the air separation effect. This not only improves the removal of stems but also prevents the accidental removal of tobacco shreds, ultimately enhancing the overall air separation effect.

[0026] Secondly, this invention uses a method for controlling tobacco air separation equipment. By comparing the changes in tobacco materials before and after air separation with preset standards, it determines whether the tobacco stem content and moisture content of the tobacco shreds meet the standards. This allows for the adjustment of three parameters of the tobacco air separation equipment: the fan frequency, the guide plate angle, and the flow rate of the input tobacco materials. This enables the adjustment of corresponding air separation process parameters for different brands, thereby improving the air separation effect of tobacco materials and ensuring the manufacturing effect of finished cigarettes. Attached Figure Description

[0027] Figure 1 This is a structural perspective view of the tobacco air separation device proposed in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the tobacco air separation device proposed in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the control method for the tobacco air separation equipment proposed in the embodiments of the present invention.

[0030] In the picture:

[0031] 1. Feeding mechanism; 2. First air separation pipe; 3. Transfer mechanism; 4. Second air separation pipe; 5. Cyclone separator; 6. Mounting bracket; 7. First connecting pipe; 8. Second connecting pipe;

[0032] 31. Housing; 32. Guide plate assembly; 33. Second vibrating conveyor; 51. Feed inlet; 52. Exhaust outlet; 53. Discharge outlet; 54. Dust collector filter screen;

[0033] 321. First guide plate; 322. Second guide plate. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0038] The following is in conjunction with the appendix Figures 1 to 3The technical solution of the present invention will be further illustrated through specific embodiments.

[0039] In the cigarette manufacturing industry, the tobacco air separation process directly restricts product quality and economic benefits. Among them, the separation of tobacco shreds and stems in tobacco materials is a key step. Specifically, in the separation process, if a low stem content is required in the air-separated tobacco shreds, the amount of stems removed must be increased. This increases the amount of tobacco shreds carried away by the stems, making the subsequent secondary stem-shred separation more difficult. If the amount of stems removed is reduced, some lighter stems will enter the smoking belt through the air chamber, causing a series of quality problems such as increased cigarette weight deviation, uneven cigarette hardness, and "punctures" or roughness on the cigarette surface. This leads to an increase in product material consumption indicators. Therefore, how to improve the removal effect of tobacco stems in tobacco materials while avoiding the removal of tobacco shreds has become an urgent technical problem to be solved.

[0040] Therefore, in order to improve the removal of tobacco stems from tobacco materials while avoiding the accidental removal of tobacco shreds, and thus improve the wind separation effect of tobacco materials, such as... Figures 1 to 2 As shown, the present invention provides a tobacco air separation device for separating tobacco shreds and stems from tobacco materials and performing air separation on the tobacco shreds. The tobacco air separation device includes a feeding mechanism 1, a first air separation pipe 2, a transfer mechanism 3, a second air separation pipe 4, a cyclone separator 5, and a blower connected in sequence. The feeding mechanism 1 is used to transport the tobacco material to the first air separation pipe 2 for primary air separation. The transfer mechanism 3 includes a housing 31, a guide plate assembly 32, and a second vibrating conveyor 33. The guide plate assembly 32 includes a first guide plate 321 and a second guide plate 322. The first guide plate 321 and the second vibrating conveyor 33... The two guide plates 322 are rotatably connected to the inner wall of the housing 31 on the same side. The second vibrating conveyor 33 is located at the bottom of the housing 31 and below the first guide plate 321 and the second guide plate 322. The first guide plate 321 is used to guide the tobacco material after the first-stage air separation, and the second guide plate 322 is used to guide the tobacco material in the internal cavity of the housing 31 so that the tobacco material can fall to the second vibrating conveyor 33. The second vibrating conveyor 33 is used to transport the tobacco material to the second air separation pipe 4 for the second-stage air separation. The cyclone separator 5 is used to perform cyclone separation on the tobacco material.

[0041] It is understood that tobacco air separation equipment is used to separate tobacco shreds and stems in tobacco materials and to perform air separation on the tobacco shreds. Specifically, the tobacco air separation equipment includes a feeding mechanism 1, a first air separation pipe 2, a transfer mechanism 3, a second air separation pipe 4, a cyclone separator 5, and a blower, connected in sequence. The feeding mechanism 1 is used to transport the tobacco material to the first air separation pipe 2 for primary air separation. The transfer mechanism 3 includes a housing 31, a guide plate assembly 32, and a second vibrating conveyor 33. The guide plate assembly 32 includes a first guide plate 321 and a second vibrating conveyor 33. Two guide plates 322 are rotatably connected to the inner wall of the housing 31 at one end of the first guide plate 321 and one end of the second guide plate 322. A second vibrating conveyor 33 is located at the bottom of the housing 31 and below the first and second guide plates 321 and 322. The first guide plate 321 guides the tobacco material after primary air separation, and the second guide plate 322 guides the tobacco material inside the housing 31 so that it can fall onto the second vibrating conveyor 33. The second vibrating conveyor 33 is used to... The material is conveyed to the second air separation pipe 4 for secondary air separation. In other words, due to the suction effect of the fan, the tobacco material entering the internal chamber of the housing 31 is floated along a parabolic trajectory. At this time, the first guide plate 321 is used to guide the tobacco material after the first air separation, and the second guide plate 322 is used to guide the tobacco material in the internal chamber of the housing 31 so that the tobacco material can fall to the second vibrating conveyor 33. The cyclone separator 5 is used to separate the tobacco shreds by cyclone separation. On the basis of the secondary air separation, the first guide plate 321 and the second guide plate 322 of the transfer mechanism 3 realize the combination of floatation and flotation of tobacco material, thereby improving the separation effect of tobacco shreds, stems and even other impurities in the tobacco material. Combined with the vibration of the second vibrating conveyor 33, the separation effect of tobacco shreds and stems in the tobacco material is improved, thereby improving the air separation effect of tobacco shreds. It can not only improve the removal effect of stems in the tobacco material, but also avoid the accidental removal of tobacco shreds in the tobacco material, thus improving the air separation effect of tobacco material.

[0042] Furthermore, in this embodiment, as Figures 1 to 2 As shown, both the first air separation pipe 2 and the second air separation pipe 4 have inlets on their side walls; the feeding mechanism 1 includes a first vibrating conveyor, the output end of which is aligned with the inlet of the first air separation pipe 2, and the first vibrating conveyor is used to transport tobacco material through the inlet of the first air separation pipe 2 to the first air separation pipe 2 for primary air separation; the output end of the second vibrating conveyor 33 is aligned with the inlet of the second air separation pipe 4, and the second vibrating conveyor 33 is used to transport tobacco material through the inlet of the second air separation pipe 4 to the second air separation pipe 4 for secondary air separation.

[0043] It is understood that the feeding mechanism 1 includes a first vibrating conveyor, which can perform vibration conveying to improve the separation effect of tobacco shreds, tobacco stems and impurities in the tobacco material before air separation. At the same time, the side walls of the first air separation pipe 2 and the second air separation pipe 4 are provided with inlets, and the output end of the first vibrating conveyor is aligned with the inlet of the first air separation pipe 2. The first vibrating conveyor is used to convey the tobacco material through the inlet of the first air separation pipe 2 to the first air separation pipe 2 for primary air separation. The output end of the second vibrating conveyor 33 is aligned with the inlet of the second air separation pipe 4. The second vibrating conveyor 33 is used to convey the tobacco material through the inlet of the second air separation pipe 4 to the second air separation pipe 4 for secondary air separation, thereby improving the structural rationality and air separation effect of the tobacco air separation equipment.

[0044] Furthermore, in this embodiment, as Figures 1 to 2 As shown, both ends of the first air separation pipe 2 and the second air separation pipe 4 include a top opening and a bottom opening. The top opening of the first air separation pipe 2 and the feed inlet of the second air separation pipe 4 are respectively connected to the internal chamber of the housing 31. The top opening of the second air separation pipe 4 is connected to the cyclone separator 5. The top opening of the first air separation pipe 2 is used for the discharge of tobacco material after primary air separation, and the top opening of the second air separation pipe 4 is used for the discharge of tobacco shreds after air separation. The bottom openings of the first air separation pipe 2 and the second air separation pipe 4 are both used for the discharge of tobacco stems during air separation.

[0045] It is understandable that both ends of the first air separation pipe 2 and the second air separation pipe 4 include a top opening and a bottom opening. The top opening of the first air separation pipe 2 and the feed inlet of the second air separation pipe 4 are respectively connected to the internal chamber of the housing 31. The top opening of the second air separation pipe 4 is connected to the cyclone separator 5. The top opening of the first air separation pipe 2 is used for the discharge of tobacco material after primary air separation, and the top opening of the second air separation pipe 4 is used for the discharge of tobacco shreds after air separation. The bottom openings of the first air separation pipe 2 and the second air separation pipe 4 are both used for the discharge of tobacco stems during air separation. This improves the structural rationality and air separation effect of the tobacco air separation equipment, as well as the collection effect of tobacco stems.

[0046] Furthermore, in this embodiment, as Figures 1 to 2 As shown, the cyclone separator 5 includes an inlet 51, an exhaust port 52, and a discharge port 53. The inlet 51 is connected to the top opening of the second air separation pipe 4, the exhaust port 52 is connected to the air intake of the fan, and the discharge port 53 is used to discharge the tobacco shreds after cyclone separation.

[0047] It is understood that the tobacco air separation equipment includes a feeding mechanism 1, a first air separation pipe 2, a transfer mechanism 3, a second air separation pipe 4, a cyclone separator 5, and a blower, which are connected in sequence. The feeding mechanism 1 includes a first vibrating conveyor, which vibrates and conveys the tobacco material into the first air separation pipe 2. Both ends of the first air separation pipe 2 and the second air separation pipe 4 have top and bottom openings, and both sides of the first air separation pipe 2 and the second air separation pipe 4 have inlets. The transfer mechanism 3 includes a housing 31, with the top opening of the first air separation pipe 2 and the inlet of the second air separation pipe 4 respectively... The cyclone separator 5 is connected to the internal cavity of the housing 31. It includes an inlet 51, an exhaust port 52, and a discharge port 53. The inlet 51 is connected to the top opening of the second air separation pipe 4, the exhaust port 52 is connected to the air intake of the blower, and the discharge port 53 is used to discharge the tobacco shreds after cyclone separation. The transfer mechanism 3 also includes a guide plate assembly 32 and a second vibrating conveyor 33. Both the guide plate assembly 32 and the second vibrating conveyor 33 are located within the internal cavity of the housing 31, and the angle of the guide plate assembly 32 is adjustable. The guide plate assembly 32 includes a first guide plate 321 and a second guide plate 322. One of the first guide plates 321... One end of each of the first and second guide plates 322 is rotatably connected to the inner wall of the housing 31. The second vibrating conveyor 33 is located at the bottom of the housing 31 and below the first and second guide plates 321 and 322. The first guide plate 321 is used to guide the tobacco material after the first-stage air separation, and the second guide plate 322 is used to guide the tobacco material in the internal cavity of the housing 31 so that the tobacco material can fall to the second vibrating conveyor 33. The second vibrating conveyor 33 is used to transport the tobacco material to the second air separation pipe 4 for secondary air separation. The cyclone separator 5 is used for cyclone separation of the tobacco shreds. The output end of the conveyor 33 is aligned with the inlet of the second air separation pipe 4; the feeding mechanism 1 is used to transport the tobacco material through the inlet of the first air separation pipe 2 to the first air separation pipe 2 for primary air separation; the guide plate assembly 32 is used to guide the tobacco material that has completed primary air separation to the internal cavity of the box 31; the separated tobacco material falls to the second vibrating conveyor 33; the second vibrating conveyor 33 is used to transport the tobacco material through the inlet of the second air separation pipe 4 to the second air separation pipe 4 for secondary air separation; the bottom opening of the first air separation pipe 2 and the bottom opening of the second air separation pipe 4 are used for the discharge of tobacco stems in the tobacco material.

[0048] In other words, in actual operation, the tobacco air separation equipment of the present invention, since the feeding mechanism 1, the first air separation pipe 2, the transfer mechanism 3, the second air separation pipe 4, the cyclone separator 5, and the fan are connected in sequence, the fan provides power to the entire equipment. That is, the fan generates negative pressure (i.e., suction), allowing the tobacco material to pass through the feeding mechanism 1, the first air separation pipe 2, the transfer mechanism 3, the second air separation pipe 4, and the cyclone separator 5 in sequence. The specific operating principle is as follows: the tobacco material is first vibrated and conveyed to the first air separation pipe 2 by the first vibrating conveyor of the feeding mechanism 1, and the first air separation pipe... 2 is essentially a primary air-separation structure, vertically arranged, including both a top and bottom opening. The suction from the fan and the vibration conveying from the first vibrating conveyor allow tobacco material to enter the first air-separation pipe 2 through the feed inlet on its side wall for primary air separation. Larger tobacco stems and impurities fall to the bottom opening of the first air-separation pipe 2 due to gravity, while lighter tobacco shreds and a small amount of smaller tobacco stems and impurities enter the internal chamber of the housing 31 through the top opening of the first air-separation pipe 2 and are then processed by the guide plate assembly 32. The guide plate assembly 32 is angle-adjustable, allowing for adaptive adjustment to avoid excessive tobacco waste. The tobacco material entering the internal chamber of the housing 31 follows a parabolic trajectory, achieving aerial separation. The guide plate assembly 32 guides the movement of the tobacco material, separating tobacco shreds, stems, and impurities. Due to gravity, the tobacco falls to the second vibrating conveyor 33 at the bottom, where it is then conveyed through vibration, clearing the contents of the housing 31. The tobacco material in the chamber is conveyed to the second air separation pipe 4 through the inlet for secondary air separation. At this time, a small amount of lighter tobacco stems and other impurities will fall from the bottom opening of the second air separation pipe 4, while the tobacco shreds that have completed air separation will enter the cyclone separator 5 through the inlet 51 of the cyclone separator 5 through the top opening of the second air separation pipe 4 for cyclone separation, so that the tobacco shreds can be discharged from the discharge port 53, thus completing the separation of tobacco shreds. In this way, not only can the above-mentioned tobacco air separation equipment control method be realized, but also the tobacco shreds and tobacco stems of the tobacco material can be accurately separated.

[0049] It should be noted that the first air separation pipe 2 and the second air separation pipe 4 can be multi-section bent plate air separators, that is, they are in a bent shape, for example, they can be Figure 2 as well as Figure 3The first air separation pipe 2 and the second air separation pipe 4 shown are both continuously bent structures. This design ensures that the tobacco material is continuously disturbed and collided with by the bent inner wall as it falls after entering through the feed inlet, thereby improving the air separation effect. Of course, other bent structures can also be used, which will not be listed here. The first vibrating conveyor and the second vibrating conveyor 33 are existing technologies, designed to transport tobacco material by vibration conveying, and are not limited in detail here. In addition, since the second air separation pipe 4 is a structure for secondary air separation, the tobacco material at this time... Heavier tobacco stems and impurities have already been removed in the first air separation duct 2. Therefore, the distance between the inlet and the top opening of the second air separation duct 4 can be greater than the distance between the inlet and the top opening of the first air separation duct 2. This ensures that during the secondary air separation process, lighter and smaller tobacco stems and impurities need to travel a longer distance to reach the top opening of the second air separation duct 4. In other words, it further ensures that lighter and smaller tobacco stems and impurities selected in the secondary air separation can fall to the bottom opening of the second air separation duct 4, thereby ensuring the air separation effect. Furthermore, the second air separation duct 4 can be as follows: Figure 2 The components shown are arranged inside the chamber 31 of the housing, thereby improving the structural rationality of the tobacco air separation equipment. Meanwhile, the cyclone separator 5, the fan, etc., are all existing technologies in this field, and their specific models and materials are not detailed here.

[0050] In addition, regarding the specific debugging method of the tobacco air separation equipment, firstly, the tobacco material is vibrated and conveyed through the first vibrating conveyor of the feeding mechanism 1. Then, the stem content and moisture content of the tobacco material are detected. Subsequently, the tobacco material undergoes secondary air separation through the first air separation pipe 2 and the second air separation pipe 4. After the air separation is completed, the tobacco shreds are discharged from the discharge port 53 of the cyclone separator 5. At this time, the stem content and moisture content of the tobacco shreds after air separation are detected, and it is determined whether the stem content and moisture content of the tobacco shreds meet the preset standards. When both the stem content and moisture content of the tobacco shreds meet the preset standards, the air separation parameters are obtained and the adjustment is completed. However, when at least one of the stem content and moisture content of the tobacco shreds is unqualified, the fan frequency, the angle of the guide plate assembly 32, and the flow rate of the input tobacco material of the tobacco air separation equipment are adjusted, and air separation is performed again until the stem content and moisture content of the tobacco shreds meet the preset standards.

[0051] It should be noted that the specific shape, material, and size of the first guide plate 321 and the second guide plate 322 are adaptively selected and adjusted by those skilled in the art according to actual usage requirements, and are not limited in detail here. Furthermore, the first guide plate 321 can be as follows: Figure 2 One end of the material is rotatably connected to the top inner wall of the housing 31, and the second guide plate 322 can be as shown. Figure 2 One end is rotatably connected to the side wall of the housing 31.

[0052] Furthermore, in this embodiment, the feeding mechanism 1 also includes a first moisture sensor (not shown in the figure), which is used to detect the moisture content in the tobacco material before the first-stage air separation, and the cyclone separator 5 also includes a second moisture sensor (not shown in the figure), which is used to detect the moisture content in the tobacco shreds after cyclone separation.

[0053] Understandably, the feeding mechanism 1 includes a first moisture sensor for detecting the moisture content of the tobacco material fed into the feeding mechanism 1; the cyclone separator 5 also includes a second moisture sensor, which is located at the discharge port 53 and is used to detect the moisture content of the tobacco shreds. This allows for more precise adjustment of the fan frequency, the angle of the guide plate assembly 32, and the flow rate of the fed tobacco material in the tobacco air-separation equipment. Additionally, the second moisture sensor can be located at the discharge port 53.

[0054] It should be noted that the specific models of the first and second moisture sensors are selected by those skilled in the art based on actual usage requirements. For example, they may be non-contact infrared moisture meters, etc., and are not limited in detail here.

[0055] Furthermore, in this embodiment, the feeding mechanism 1 also includes a first weight sensor (not shown in the figure), which is used to detect the weight of the tobacco material in the feeding mechanism 1; the cyclone separator 5 also includes a second weight sensor (not shown in the figure), which is set at the discharge port 53 and is used to detect the weight of the tobacco shreds, thereby providing an auxiliary basis for judging whether the tobacco stem content and moisture content of the tobacco shreds meet the preset standards. In addition, most importantly, the first weight sensor can measure the flow rate of the tobacco material by combining the weighing situation (i.e., the weight of the tobacco material before air separation) with the tobacco material conveying speed, thereby enabling more precise adjustment of the fan frequency, guide plate assembly 32 angle, and the flow rate of the input tobacco material in the tobacco air separation equipment. That is, the corresponding air separation process parameters are adjusted for different tobacco materials, thereby improving the air separation effect of the tobacco material. The flow rate adjustment method of the tobacco material can be, for example, adjusting the conveying speed of the first vibrating conveyor.

[0056] In addition, the feeding mechanism 1 also includes a first image processing module (not shown in the figure), which is used to detect the stem content and grade of the tobacco material before the first-stage air separation. The cyclone separator 5 also includes a second image processing module (not shown in the figure), which is used to detect the stem content in the tobacco shreds after cyclone separation. Thus, the first and second image processing modules are used to determine whether the actual stem removal amount meets the standard and whether the tobacco shreds after final air separation meet the preset standard. At the same time, the fan frequency, the angle of the guide plate assembly 32 (more specifically the first guide plate 321 and the second guide plate 322), and the flow rate of the input tobacco material can be adjusted more accurately. That is, the corresponding air separation process parameters are adjusted for different tobacco materials, thereby improving the air separation effect of the tobacco material. It should be noted that the second image processing module can be set at the discharge port 53. As for the first and second image processing modules, they can first acquire material images using an industrial camera or a spectral camera and preprocess them to remove noise. Then, they can use traditional image features such as color and texture or a target segmentation model based on deep learning to accurately segment the tobacco stems and tobacco shreds in the image at the pixel level. Finally, for example, they can estimate the content by statistically analyzing the proportion of tobacco stem pixel area to the total material pixel area, thereby completing the detection of tobacco stem content in tobacco materials. In other words, both the first and second image processing modules are existing technologies and will not be described or limited in detail here.

[0057] Additionally, as an option, such as Figures 2 to 3 As shown, the tobacco air separation equipment also includes a mounting frame 6, and the feeding mechanism 1, the first air separation pipe 2, the transfer mechanism 3 and the second air separation pipe 4 are all installed on the mounting frame 6.

[0058] It is understood that the tobacco air separation equipment also includes a mounting frame 6. The feeding mechanism 1, the first air separation pipe 2, the transfer mechanism 3, and the second air separation pipe 4 are all installed on the mounting frame 6, thereby improving the structural rationality of the tobacco air separation equipment. Of course, the second air separation pipe 4, the cyclone separator 5, and the fan can also be set on the mounting frame 6. In addition, the specific material, size, shape, etc. of the mounting frame 6 are all adaptively selected and adjusted by those skilled in the art according to actual usage needs, and are not limited in detail here.

[0059] In addition, the tobacco air separation equipment also includes a first connecting pipe 7 and a second connecting pipe 8. The second air separation pipe 4 is connected to the feed inlet 51 of the cyclone separator 5 through the first connecting pipe 7, and the exhaust port 52 of the cyclone separator 5 is connected to the blower through the second connecting pipe 8. This can improve the structural rationality and operational stability of the tobacco air separation equipment. As for the specific lengths and connection methods of the first connecting pipe 7 and the second connecting pipe 8, these are all existing technologies and will not be elaborated on here.

[0060] In addition, a dust filter 54 is installed inside the cyclone separator 5. The dust filter 54 is used to prevent dust from entering the fan. It can be understood that the dust filter 54 is installed so that the dust after cyclone separation will not enter the fan, thus preventing damage to the fan and effectively ensuring the service life of the fan and the operational stability of the tobacco air separation equipment. As for the specific material of the dust filter 54, it is all existing technology in the field.

[0061] In addition, the bottom opening of the first air separation pipe 2 is connected to a first receiving hopper (not shown in the figure), the bottom opening of the second air separation pipe 4 is connected to a second receiving hopper (not shown in the figure), and the discharge port 53 is connected to a third receiving hopper (not shown in the figure), thereby improving the convenience of receiving tobacco stems and impurities as well as the convenience of receiving tobacco shreds.

[0062] Furthermore, the physical principles underlying air separation engineering are as follows:

[0063] When tobacco stems and shreds are placed in a fluid, they experience an upward vertical force equal to the weight of the fluid they displace, also known as buoyancy F. B F B The calculation formula is:

[0064]

[0065] In the above formula, ρ is the density of the particle.

[0066] When there is a relative velocity between particles and the fluid, the particles experience a force from the fluid; this force is called drag F. D Resistance F D The calculation formula is:

[0067]

[0068] In the above formula, C D The drag coefficient for spherical particles, such as the common C D It can be equal to 0.47; S is the reference area of ​​the spherical particle, specifically S=πd 2 / 4;V a V represents the fluid velocity. b This represents the particle velocity.

[0069] And gravity F g The calculation formula is:

[0070]

[0071] In the above formula, m is the mass of the particle; ρ is the density of the particle. Using the basic principles of suspension separation theory, the force balance equation of the particle in the fluid field can be derived as follows:

[0072]

[0073] It is understandable that when F > 0, the particles rise; when F < 0, the particles settle; and when F = 0, the particles are suspended. And through the above analysis, we know that gravity F... g and buoyancy F B The size of the air separation is mainly affected by the density and volume of solids and fluids, which depends on the properties of the material itself and cannot be changed by external means. Therefore, the suspension separation effect can only be achieved by changing the aerodynamic resistance, i.e., changing the flow rate. The fan frequency is the most direct factor affecting the air separation effect. An excessively high fan frequency will lead to a larger gas flow rate inside the air separation equipment, resulting in a large number of tobacco stems not being separated, thus failing to meet production standards. On the other hand, an excessively low fan frequency will lead to a lower tobacco shred collection rate, which also fails to meet the standards. Therefore, the angle of the guide plate can be adjusted according to whether the tobacco stem content and moisture content of the tobacco shreds meet the preset standards, thereby achieving intelligent control of the airflow and the movement trajectory of tobacco stem particles. In other words, when controlling the air separation process for different tobacco materials, it is necessary to comprehensively consider the interaction of the fan frequency, guide plate angle, and the flow rate of the input tobacco material, and to perform intelligent debugging based on the collected data to achieve the optimal synergistic configuration of each factor, thereby achieving the optimal air separation effect for a specific grade of raw material. Of course, tobacco air separation equipment may also include a PLC (Programmable Logic Controller). The Controller performs data aggregation and processing, which will not be elaborated on here.

[0074] Furthermore, with increasingly stringent environmental protection requirements, optimizing the separation process of tobacco shreds and stems has become an important research direction in the tobacco industry. Efficient separation technology not only improves raw material utilization and reduces production costs but also plays a crucial role in improving cigarette quality. Currently, tobacco air separation equipment in industrial sorting mainly employs two basic architectures: single-stage and two-stage. For single-stage air separation devices, preliminary sorting is achieved based on the synergistic effect of gravity and negative pressure. After the material enters the air separation chamber, excessively heavy impurities settle directly under gravity, while lighter impurities are carried away by the negative pressure airflow. Although this mode has a simple structure, its sorting efficiency is limited by the dynamic fluctuations in material flow rate. When the flow rate increases, the negative pressure needs to be reduced to increase the rejection rate to maintain the sorting effect. However, this can easily lead to an increase in the false rejection rate of qualified materials (such as tobacco shreds), creating a dual contradiction of increased raw material loss and increased energy consumption. At this point, the physical characteristics of the tobacco shreds and residual impurities in the material (such as density distribution and suspension velocity) have changed significantly, requiring independent airflow parameter control (such as wind speed gradient and airflow direction adjustment) to achieve accurate sorting. In contrast, the two-stage air separation device performs fine processing on the intermediate products after the first-stage separation. Specifically, the two-stage air separation is a second air separation on the basis of the first-stage air separation equipment. Since the rejection amount of the second-stage air separation is significantly lower than that of the first-stage air separation, the air separation and rejection efficiency is significantly improved in the second-stage air separation. The qualified tobacco shreds in the rejection of the first-stage air separation will also be efficiently separated and recovered in the second-stage air separation, thereby reducing production consumption. However, traditional air separation technology mainly relies on manual experience to adjust air separation parameters such as wind speed, air volume, and material feed rate. This is easily affected by the different batch characteristics of different brands of tobacco materials (moisture content, stem content, etc. are all different), resulting in unstable accuracy and high material loss when air separating tobacco materials of different brands. Therefore, adjusting the corresponding air separation process parameters for different brands has become an important part of the control of tobacco air separation equipment. In other words, how to accurately, efficiently, and reasonably control the air separation process parameters of the air separation equipment when facing different tobacco materials, so as to improve the air separation effect of tobacco materials and thus improve the manufacturing effect of finished cigarettes, has become a technical problem that urgently needs to be solved.

[0075] Therefore, in order to adjust the corresponding air separation process parameters for different tobacco materials and thus improve the air separation effect of tobacco materials, such as... Figures 1 to 3 As shown, the present invention also provides a method for controlling a tobacco air separation device, applied to the aforementioned tobacco air separation device. The method for controlling the tobacco air separation device includes the following steps:

[0076] S1. Input the tobacco material into the tobacco air separation equipment;

[0077] S2. The content of tobacco stems and moisture content of tobacco materials are tested;

[0078] S3. Perform air separation on tobacco materials;

[0079] S4. Detect the tobacco stem content and moisture content in the wind-separated tobacco shreds, and determine whether the tobacco stem content and moisture content of the tobacco shreds meet the preset standards; when the tobacco stem content and moisture content of the tobacco shreds both meet the preset standards, proceed to step S5; when at least one of the tobacco stem content and moisture content of the tobacco shreds is unqualified, proceed to step S6.

[0080] S5. Obtain the air separation parameters and complete the adjustment;

[0081] S6. Adjust the fan frequency, guide plate assembly angle and feed flow rate of the tobacco air classifier, and execute steps S3 and S4 again.

[0082] Understandably, the control method for tobacco wind separation equipment includes the following steps: First, tobacco material is fed into the tobacco wind separation equipment. When the tobacco material enters the equipment, the stem content and moisture content are detected. After the stem and moisture content are detected, wind separation begins. After wind separation, the stem and moisture content in the final tobacco shreds are detected, and it is determined whether the stem and moisture content meet the preset standards. If both the stem and moisture content meet the preset standards, the wind separation parameters for normal wind separation of this tobacco material are obtained. Specifically, these are the fan frequency, the angle of the guide plate assembly 23, and the flow rate of the input tobacco material. These parameters are used as a benchmark for subsequent wind separation of the same brand and batch, thus completing the control. However, if the stem and moisture content of the final tobacco shreds... If at least one of the following conditions is not met, the fan frequency, guide plate assembly 23 angle, and flow rate of the input tobacco material in the tobacco air separation equipment are adjusted, and air separation is performed again. Then, the stem content and moisture content of the tobacco shreds are checked again to see if they meet the preset standards. This process is repeated. If the stem content and moisture content of the tobacco shreds both meet the preset standards, the air separation parameters for normal air separation of this tobacco material are obtained. Specifically, these are the fan frequency, guide plate assembly 23 angle, and flow rate of the input tobacco material in the tobacco air separation equipment. This is used as a benchmark for subsequent air separation of the same brand and batch, completing the adjustment. If at least one of the stem content and moisture content of the tobacco shreds is still not met, the fan frequency, guide plate assembly 23 angle, and flow rate of the input tobacco material in the tobacco air separation equipment are repeatedly adjusted. This cycle continues until the stem content and moisture content of the tobacco shreds meet the preset standards. This invention determines the initial condition of a batch of tobacco materials by first identifying the stem and moisture content. After wind separation, the stem and moisture content of the tobacco shreds are tested to determine whether they meet preset standards. Specifically, the changes in the tobacco materials before and after wind separation are compared to these preset standards to verify compliance. Furthermore, three parameters of the tobacco wind separation equipment—fan frequency, guide plate assembly angle 23, and the flow rate of the input tobacco materials—are adjusted. This allows for the adjustment of corresponding wind separation process parameters for different brands, thereby improving the wind separation effect of the tobacco materials and ensuring the manufacturing effect of the finished cigarettes.

[0083] It should be noted that this invention detects the stem and moisture content of tobacco materials before wind separation, and also detects the stem and moisture content of tobacco shreds after wind separation, determining whether the stem and moisture content of the tobacco shreds meets a preset standard. This preset standard varies for different brands and batches of tobacco materials, and is the finished product inspection standard in this field corresponding to the tobacco shreds after wind separation. In other words, the preset standard can be understood as the preset standard for the finished product in this field corresponding to the tobacco shreds after wind separation. The relevant industry standards for finished products in this field are existing technologies and will not be detailed here. Furthermore, the content of tobacco stems and moisture in the wind-separated tobacco shreds is tested, and it is determined whether the content of tobacco stems and moisture in the tobacco shreds meets the preset standards. When both the content of tobacco stems and moisture in the tobacco shreds meet the preset standards, the wind separation parameters are obtained and adjusted. However, when at least one of the content of tobacco stems and moisture in the tobacco shreds fails to meet the standards, the fan frequency, the angle of the guide plate assembly 23, and the flow rate of the input tobacco material are adjusted, and step S3 is repeated. The stem and moisture content of the tobacco shreds must meet preset standards. Specifically, for example, in the first case: when the moisture content of the tobacco shreds after air separation is significantly lower than that before air separation and does not meet production standards, the airflow into the air separation machine can be controlled to ensure that the moisture content of the tobacco shreds in subsequent air separations is qualified. More specifically, the fan frequency of the tobacco air separation equipment can be reduced and the flow rate of the input tobacco material can be appropriately reduced to ensure that the moisture content of the tobacco shreds in subsequent air separations is qualified. In the second case: when the amount of tobacco shreds and waste material in the tobacco shreds after air separation increases, the guide plate assembly at angle 23 can be adjusted. The following adjustments are made to the angle of the guide plate assembly 23 to prevent the material from directly impacting the guide plate assembly 23 and causing an increase in dust, thereby reducing the content of tobacco dust waste. In the third case, when the weight of tobacco shreds after air separation is too low, the flow rate of the tobacco material needs to be adjusted in conjunction with the fan frequency and the flow rate of the tobacco material, appropriately increasing both the flow rate and the fan frequency. In the fourth case, when there are too many tobacco stems in the air-separated tobacco shreds, the coordinated control of the fan frequency and the angle of the guide plate assembly 23 can be considered, that is, the fan frequency, the angle of the guide plate assembly 23, and the flow rate of the input tobacco material can be adaptively adjusted simultaneously to reduce the content of tobacco stems in the air-separated tobacco shreds. Therefore, when dealing with different brands and batches of tobacco material, the fan frequency, the angle of the guide plate assembly 23, and the flow rate of the input tobacco material corresponding to that brand and batch can be obtained. This serves as the standard for the air separation process parameters of that brand and batch of tobacco material, thereby improving the air separation effect of the tobacco material.

[0084] Furthermore, optionally, in this embodiment, step S1 includes the following steps:

[0085] Step S11: Determine the grade of the tobacco material;

[0086] Step S12: Feed the tobacco material into the tobacco air separation equipment.

[0087] It is understandable that step S1 specifically includes the following steps: Step S11, determining the grade of the tobacco material; Step S12, feeding the tobacco material into the tobacco air classifier, that is, first determining the grade of the tobacco material to be air-classified, and then feeding the tobacco material into the tobacco air classifier. This allows for the prior determination of the preset standard of the final air-classified tobacco shreds corresponding to that grade, thereby improving the air classifier efficiency and accuracy. At the same time, based on determining the grade of the tobacco material, combined with the detection of the tobacco stem content and moisture content of the tobacco material before air classification in step S2, this can more intuitively reflect the situation of this batch of tobacco material of that grade, such as information that the moisture content of this batch of tobacco material is higher. This information can be promptly fed back to upstream processing terminals for storage and processing, or facilitates intuitive judgment by staff, thereby facilitating timely adjustment of other process parameters in the upstream processing steps of the tobacco material. In addition, determining the grade of tobacco material is beneficial for setting the initial values ​​of the air separation process parameters. Specifically, after determining the grade of tobacco material, the unique morphological characteristics of the corresponding tobacco stems and shreds in the database in terms of length, diameter, density, and flexibility can be compared. Based on these morphological characteristic data, the fan frequency, guide plate assembly 23 angle, and flow rate of the tobacco material input of the tobacco air separation equipment adapted to the grade of tobacco material can be manually preset. After the equipment starts up according to the preset parameters and runs to a stable operating condition, the fan frequency, guide plate assembly 23 angle, and flow rate of the tobacco material input of the tobacco air separation equipment can be adjusted in a targeted manner based on the actual air separation effect.

[0088] Furthermore, in this embodiment, in step S2, the tobacco stem content of the tobacco material is detected by the first image processing module, and the first image processing module can be used to detect and determine the brand of the tobacco material in step S11.

[0089] It is understandable that in step S2, the first image processing module detects the stem content of the tobacco material, and this module can also be used to detect and determine the brand of the tobacco material in step S11. That is, while detecting the stem content, the first image processing module also detects and determines the brand of the tobacco material in step S11. Simultaneously, the detection of the stem content allows the tobacco stem content to be visually presented to the staff. Based on the established database of different brand tobacco materials, the staff performs moisture detection and subsequent steps according to the regulations for each brand. In other words, the first image processing module has two functions: detecting the stem content of the tobacco material and detecting and determining the brand of the tobacco material in step S11. This improves the efficiency of wind separation and the functional integration of the corresponding tobacco wind separation equipment. It also allows for more precise adjustment of the fan frequency, the angle of the guide plate assembly 23, and the flow rate of the input tobacco material.

[0090] It should be noted that, for the first image processing module, material images can be acquired first through an industrial camera or a spectral camera and preprocessed to remove noise. Then, traditional image features such as color and texture or a target segmentation model based on deep learning can be used to perform precise pixel-level segmentation of the tobacco stem and tobacco shred areas in the image. Finally, the content can be estimated by statistically analyzing the proportion of tobacco stem pixel area to the total material pixel area, and the grade of tobacco material can be determined by comparative analysis, thereby completing the detection of tobacco stem content in tobacco material.

[0091] Furthermore, in this embodiment, after the tobacco material grade is determined by step S11, in step S4, the tobacco stem content and moisture content of the wind-separated tobacco shreds are detected, and it is determined whether the tobacco stem content and moisture content of the tobacco shreds of a specific grade meet the corresponding preset standards.

[0092] It is understandable that after determining the grade of tobacco material through step S11, the preset standard of the wind-separated tobacco shreds corresponding to that grade of tobacco material is determined, and then the stem content and moisture content of the tobacco shreds of a specific grade are judged according to the preset standard, thereby effectively improving the accuracy of determining the wind-separation effect of tobacco shreds.

[0093] Furthermore, in this embodiment, in step S4, the content of tobacco stems in the wind-separated tobacco is detected by the second image processing module.

[0094] Understandably, in step S4, the second image processing module detects the stem content in the wind-separated tobacco shreds. That is, the second image processing module detects the stem content in the wind-separated tobacco shreds, thereby realizing the detection of the stem content in the wind-separated tobacco shreds. At the same time, it works with the first image processing module to determine whether the actual stem removal amount meets the standard and whether the final wind-separated tobacco shreds meet the preset standard. It can also more accurately adjust the fan frequency, guide plate assembly 23 angle, and the flow rate of the input tobacco material of the tobacco wind-separation equipment. That is, it adjusts the corresponding wind-separation process parameters for different tobacco materials, thereby improving the wind-separation effect of the tobacco material.

[0095] It should be noted that the second image processing module can be the same as the first image processing module. Both modules first acquire material images using an industrial camera or a spectral camera and perform preprocessing to remove noise. Then, they use traditional image features such as color and texture or a target segmentation model based on deep learning to perform precise pixel-level segmentation of the tobacco stem and tobacco shred areas in the image. Finally, for example, the content can be estimated by statistically analyzing the proportion of tobacco stem pixel area to the total material pixel area, thereby completing the detection of tobacco stem content in tobacco materials.

[0096] Furthermore, in this embodiment, in step S2, the moisture content in the tobacco material is detected by a first moisture sensor.

[0097] It is understandable that in step S2, the moisture content in the tobacco material is detected by the first moisture sensor, thereby realizing the detection of the moisture content in the tobacco material. In addition, the detection results of the moisture content in the tobacco shreds after air separation can be combined to make inferences, thereby enabling more accurate adjustment of the fan frequency, the angle of the guide plate assembly 23 and the flow rate of the input tobacco material in the tobacco air separation equipment.

[0098] Furthermore, in this embodiment, in step S4, the moisture content of the air-separated tobacco is detected by a second moisture sensor.

[0099] Understandably, in step S4, the moisture content of the tobacco shreds after air separation is detected using the second moisture sensor. This allows for inference based on the moisture content detection results of the tobacco shreds before air separation. Consequently, the frequency of the fan, the angle of the guide plate assembly 23, and the flow rate of the input tobacco material in the tobacco air separation equipment can be adjusted more precisely. In other words, the corresponding air separation process parameters can be adjusted for different tobacco materials, thereby improving the air separation effect of the tobacco material.

[0100] Furthermore, in this embodiment, in step S2, the weight of the tobacco material is measured by the first weight sensor, and in step S4, the weight of the wind-separated tobacco shreds is measured by the second weight sensor, thereby assisting in determining whether the tobacco stem content and moisture content of the tobacco shreds meet the preset standards.

[0101] Understandably, in step S2, the weight of the tobacco material is first measured by the first weight sensor, and in step S4, the weight of the tobacco shreds after air separation is measured by the second weight sensor. By detecting the weight of the tobacco material before air separation and the weight of the tobacco shreds after air separation using the first and second weight sensors, it can serve as an auxiliary basis for judging whether the tobacco stem content and moisture content of the tobacco shreds meet the preset standards. In addition, most importantly, the first weight sensor can measure the flow rate of the tobacco material by combining the weighing situation (i.e., the weight of the tobacco material before air separation) with the tobacco material conveying speed. This allows for more precise adjustment of the fan frequency, guide plate assembly 23 angle, and the flow rate of the input tobacco material in the tobacco air separation equipment. That is, the corresponding air separation process parameters are adjusted for different tobacco materials, thereby improving the air separation effect of the tobacco material.

[0102] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A tobacco air separation device for separating tobacco shreds and stems from tobacco materials and performing air separation on the tobacco shreds, characterized in that, The tobacco air separation equipment includes a feeding mechanism (1), a first air separation pipe (2), a transfer mechanism (3), a second air separation pipe (4), a cyclone separator (5), and a blower connected in sequence. The feeding mechanism (1) is used to transport the tobacco material to the first air separation pipe (2) for primary air separation. The transfer mechanism (3) includes a housing (31), a guide plate assembly (32), and a second vibrating conveyor (33). The guide plate assembly (32) includes a first guide plate (321) and a second guide plate (322). The same side ends of the first guide plate (321) and the second guide plate (322) are rotatably connected to the inner wall of the housing (31). The second vibrating conveyor (33) is located at the bottom of the housing (31) and is situated on the inner wall of the first guide plate (321). Below the first guide plate (321) and the second guide plate (322); the first guide plate (321) is used to guide the tobacco material after the first-stage air separation, and the second guide plate (322) is used to guide the tobacco material in the internal cavity of the box (31) so that the tobacco material can fall to the second vibrating conveyor (33). The second vibrating conveyor (33) is used to transport the tobacco material to the second air separation pipe (4) for secondary air separation. The cyclone separator (5) is used to perform cyclone separation on the tobacco material.

2. The tobacco air separation equipment according to claim 1, characterized in that, Both the first air separation pipe (2) and the second air separation pipe (4) have inlets on their side walls; The feeding mechanism (1) includes a first vibrating conveyor, the output end of which is aligned with the inlet of the first air separation pipe (2). The first vibrating conveyor is used to transport the tobacco material through the inlet of the first air separation pipe (2) to the first air separation pipe (2) for primary air separation. The output end of the second vibrating conveyor (33) is aligned with the inlet of the second air separation pipe (4). The second vibrating conveyor (33) is used to transport the tobacco material through the inlet of the second air separation pipe (4) to the second air separation pipe (4) for secondary air separation.

3. The tobacco air separation equipment according to claim 2, characterized in that, Both ends of the first air separation pipe (2) and the second air separation pipe (4) include a top opening and a bottom opening. The top opening of the first air separation pipe (2) and the feed inlet of the second air separation pipe (4) are respectively connected to the internal chamber of the box (31). The top opening of the second air separation pipe (4) is connected to the cyclone separator (5). The top opening of the first air separation pipe (2) is used for the discharge of the tobacco material after primary air separation. The top opening of the second air separation pipe (4) is used for the discharge of the tobacco shreds after air separation. The bottom opening of the first air separation pipe (2) and the bottom opening of the second air separation pipe (4) are both used for the discharge of the tobacco stems during air separation.

4. The tobacco air separation equipment according to claim 3, characterized in that, The cyclone separator (5) includes an inlet (51), an exhaust port (52) and a discharge port (53). The inlet (51) is connected to the top opening of the second air separation pipe (4). The exhaust port (52) is connected to the air intake of the blower. The discharge port (53) is used to discharge the tobacco shreds after cyclone separation.

5. The tobacco air separation equipment according to claim 1, characterized in that, The feeding mechanism (1) further includes a first image processing module, which is used to detect the tobacco stem content and grade of the tobacco material before the first-stage air separation. The cyclone separator (5) further includes a second image processing module, which is used to detect the tobacco stem content in the tobacco shreds after cyclone separation.

6. The tobacco air separation equipment according to claim 1, characterized in that, The feeding mechanism (1) further includes a first moisture sensor, which is used to detect the moisture content in the tobacco material before the first-stage air separation. The cyclone separator (5) further includes a second moisture sensor, which is used to detect the moisture content in the tobacco shreds after cyclone separation.

7. The tobacco air separation equipment according to claim 1, characterized in that, The feeding mechanism (1) further includes a first weight sensor, which is used to detect the weight of the tobacco material before the first-stage air separation. The cyclone separator (5) further includes a second weight sensor, which is used to detect the weight of the tobacco shreds after cyclone separation.

8. The tobacco air separation equipment according to any one of claims 1-7, characterized in that, The tobacco air separation equipment also includes a mounting frame (6), on which the feeding mechanism (1), the first air separation pipe (2), the transfer mechanism (3) and the second air separation pipe (4) are all mounted.

9. A method for controlling a tobacco air separation device, applied to the tobacco air separation device as described in any one of claims 1-8, characterized in that, The control method for the tobacco air separation equipment includes: S1. Input the tobacco material into the tobacco air separation equipment; S2. The tobacco stem content and moisture content of the tobacco material are detected; S3. Perform air separation on the tobacco material; S4. Detect the stem content and moisture content of the tobacco shreds after air separation, and determine whether the stem content and moisture content of the tobacco shreds meet the preset standards; when the stem content and moisture content of the tobacco shreds both meet the preset standards, proceed to step S5; when at least one of the stem content and moisture content of the tobacco shreds is unqualified, proceed to step S6. S5. Obtain the air separation parameters and complete the adjustment; S6. Adjust the fan frequency, guide plate angle and feed flow rate of the tobacco material in the tobacco air separation equipment, and execute steps S3 and S4 again.

10. The control method for the tobacco air separation equipment according to claim 9, characterized in that, Step S1 includes: Step S11: Determine the grade of the tobacco material and obtain the preset standard corresponding to the tobacco material; Step S12: Input the tobacco material into the tobacco air separation equipment.

Images