A mobile tobacco quantity back-mixing device and a back-mixing method

Abstract

This invention discloses a mobile quantitative tobacco remixing device and method. The device includes a mobile trolley, an airflow generator, a conveying pipe, a hopper, a cyclone separator, and a feeding elbow. The airflow generator has an airflow regulator at its inlet and its outlet connected to the first end of the conveying pipe. The hopper is connected to the receiving port of the conveying pipe and equipped with a vibrator. The second end of the conveying pipe is connected to the cyclone separator, and the discharge port of the cyclone separator is connected to the feeding elbow. The airflow regulator adjusts the airflow to regulate the amount of tobacco remixed per unit time. The vibrator stabilizes the feeding. The tobacco, carried by the conveying airflow, enters the cyclone separator for separation and is then remixed through the feeding elbow to the conveyor belt. This improves the controllability and uniformity of the remixing flow rate and reduces the risk of material blockage.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing equipment technology, and more specifically, to a mobile tobacco quantitative re-blending device and method. Background Technology

[0002] Tobacco recycling is a crucial step in cigarette manufacturing. Qualified recycled tobacco generated during production is typically reintroduced into the production path during subsequent production of the same brand of tobacco. This ensures the recycled tobacco is evenly mixed with the currently being transported tobacco, thereby achieving material recycling and reducing production costs.

[0003] In existing blending operations, operators typically transport the tobacco shreds to be blended to a designated blending point and then add them to the tobacco shreds on the production line conveyor belt. Since different production batches, different production lines, or different process sections may correspond to different blending points, manual blending often requires repeated material handling and adjustment of the placement position, resulting in high labor intensity and low blending efficiency.

[0004] Manual blending relies heavily on operator experience to control the feed rate, making it difficult to maintain a stable amount of tobacco added to the production path per unit time. When the instantaneous feed rate is too high, the tobacco to be blended can easily accumulate locally on the conveyor belt, potentially causing blockages in subsequent conveying. Conversely, when the feed rate is too low, the blended tobacco will not mix sufficiently with the existing tobacco in the production line, affecting the uniformity of blending. Therefore, manual blending suffers from difficulties in quantitatively controlling the blending flow rate and poor blending uniformity.

[0005] Furthermore, the manual blending process typically requires personnel to loosen materials, observe the blending flow rate, assess the risk of material blockage, and stop and clear any abnormalities. This process is quite complex and demands a high level of coordination among personnel. If abnormal flow rates or material accumulation and blockage occur, it will not only affect the continuous operation of the production line but may also cause instability in the blending state of tobacco of the same brand, thereby impacting product quality stability.

[0006] Therefore, how to improve the control accuracy of tobacco re-mixing flow rate while reducing reliance on manual feeding, so that the tobacco to be re-mixed can be added to the production path more evenly and continuously, and reduce the risk of material blockage, is a technical problem that needs to be solved in this field. Summary of the Invention

[0007] In view of this, the purpose of the present invention is to provide a mobile tobacco shred quantitative remixing device and method, which can improve the control accuracy of tobacco shred remixing flow rate and improve the problems of poor uniformity and easy blockage of manual remixing.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A mobile tobacco shred quantitative re-blending device, comprising: Mobile cart; An airflow generator is provided on the mobile trolley. The airflow generator has an air inlet end and an air outlet end. The air inlet end is provided with an air inlet regulating component, which is used to regulate the amount of air entering the airflow generator. A conveying pipe is provided on the mobile trolley. The conveying pipe has a first end, a second end, and a receiving port located between the first end and the second end. The first end is connected to the air outlet of the airflow generator. A hopper is provided on the conveying pipe. The hopper has a discharge port that is connected to the receiving port. A vibrator is provided on the hopper for vibrating the hopper. A cyclone separator is installed on the mobile trolley. The cyclone separator has a separation inlet and a discharge outlet. The separation inlet is connected to the second end of the conveying pipe. The feeding elbow is connected to the discharge port of the cyclone separator; The airflow generator is used to form a conveying airflow from the first end to the second end in the conveying pipe, so as to drive the tobacco shreds entering the conveying pipe through the receiving port to be conveyed towards the second end; the air inlet regulator adjusts the amount of tobacco shreds remixed per unit time by adjusting the air inlet volume.

[0009] Preferably, the airflow generating component includes a fan, and the air inlet regulating component includes a damper disposed at the air inlet end of the fan; The damper includes a baffle plate, a rotating shaft, and a rotating adjustment component. The baffle plate is rotatably mounted on the air inlet end of the fan via the rotating shaft. The rotating adjustment component is connected to the rotating shaft and is used to drive the baffle plate to rotate, thereby changing the flow area at the air inlet end of the fan and positioning the baffle plate at different opening positions.

[0010] Preferably, the receiving port is located on the circumferential surface of the conveying pipe, the dropping hopper is located above the conveying pipe, and the periphery of the discharge port is sealed and fixedly connected to the periphery of the receiving port.

[0011] Preferably, the vibrator is a vibrating motor, which is fixed to the outer wall of the hopper and located near the discharge port.

[0012] Preferably, the separation inlet is located on the side wall of the cyclone separator, the second end of the conveying pipe is inserted into the separation inlet of the cyclone separator, and the second end of the conveying pipe is sealed and fixedly connected to the separation inlet of the cyclone separator; the cyclone separator is provided with an exhaust port at a position higher than the separation inlet, and a breather valve is provided at the exhaust port.

[0013] Preferably, the mobile trolley is provided with a fixed bracket, which includes an mounting part and a supporting part. The mounting part is connected to the mobile trolley, and the supporting part is located below the discharge port of the cyclone separator to support the cyclone separator and / or the feeding elbow.

[0014] Preferably, the feeding elbow has a feed end communicating with the discharge port, the feed end being rotatably supported on the support portion, the feeding elbow being able to rotate relative to the cyclone separator about the axis of the feed end, and being able to be locked relative to the cyclone separator or the fixed bracket by a locking member.

[0015] Preferably, the feeding elbow includes a vertical portion and an inclined portion communicating with the vertical portion. The top end of the vertical portion forms the feed end, and the supporting portion is provided with a relief groove, through which the vertical portion passes. The top end of the vertical portion is provided with a first flange, and the discharge port of the cyclone separator is provided with a second flange. The first flange and the second flange are connected by bolts. When the bolts are released, the feeding elbow can rotate around the axis of the vertical portion. When the bolts are tightened, the feeding elbow is fixed relative to the cyclone separator.

[0016] Preferably, the mobile trolley includes a base frame, a carrying platform, and a lifting support assembly. The bottom of the base frame is provided with casters, and at least some of the casters are provided with brakes. The carrying platform is located above the base frame via the lifting support assembly. The airflow generator, the conveying pipe, the hopper, and the cyclone separator are located on the carrying platform. The lifting support assembly is used to adjust the height of the carrying platform relative to the base frame.

[0017] A mobile method for quantitative blending of tobacco shreds, employing the aforementioned mobile quantitative blending device, wherein the mobile trolley includes a liftable support platform, the feeding elbow is locked relative to the cyclone separator via a locking component, the cyclone separator is provided with an exhaust port and a breather valve communicating with the exhaust port, and the mobile method for quantitative blending of tobacco shreds includes: Move the mobile trolley to the target remixing point and lock it; Adjust the height of the bearing platform so that the discharge position of the feeding elbow matches the height of the conveyor belt; Release the locking member from the feeding elbow, rotate the feeding elbow to the target discharge direction, and then lock the feeding elbow by the locking member; Confirm that the breathing valve is in a working state that can regulate the air pressure inside the cyclone separator; Add the tobacco shreds to be recycled into the hopper; The airflow generator is activated, causing it to generate a conveying airflow that flows from the first end toward the second end within the conveying pipe; Based on the target amount of refluxing per unit time and the preset correspondence between the opening of the air inlet regulator and the amount of refluxing per unit time, the air inlet regulator is gradually adjusted from the initial small opening to the target opening in order to gradually adjust the amount of air entering the airflow generator. Start the vibrator to vibrate the hopper at preset time intervals, so that the tobacco in the hopper enters the conveying pipe through the discharge port and the receiving port; The tobacco shreds entering the conveying pipe are conveyed toward the second end by the conveying airflow and enter the cyclone separator through the separation inlet; The cyclone separator causes the tobacco and airflow entering it to rotate and separate. During this process, the breathing valve regulates the air pressure inside the cyclone separator through the exhaust port. The separated tobacco enters the feeding bend through the discharge port and is then fed back to the conveyor belt by the feeding bend.

[0018] The mobile tobacco quantitative re-blending device provided by the above scheme, by placing the airflow generator, conveying pipe, hopper, cyclone separator, and feeding elbow on a mobile trolley, allows the device to be moved to the target re-blending point with the mobile trolley. Compared with the method of manually handling and directly scattering tobacco on the conveyor belt, this reduces the dependence on manual transfer and manual adjustment of the feeding position for the re-blending operation. The airflow generator's outlet is connected to the first end of the conveying pipe, forming a conveying airflow from the first end to the second end within the conveying pipe. The hopper's discharge port is connected to the receiving port on the conveying pipe located between the first and second ends, allowing the tobacco to be re-blended to enter the conveying pipe from the receiving port and be conveyed towards the second end of the conveying pipe under the drive of the conveying airflow. The tobacco then enters the cyclone separator through the second end of the conveying pipe and the separation inlet of the cyclone separator. The cyclone separator separates the tobacco and the airflow, allowing the separated tobacco to enter the feeding elbow through the discharge port and be discharged to the re-blending position from the feeding elbow. Therefore, the device can form a continuous conveying path from the hopper, conveying pipe, cyclone separator to the feeding bend, so that the tobacco can be continuously conveyed and returned to the production path after being added to the hopper, which is beneficial to improving the continuity of the return process.

[0019] Meanwhile, the air inlet of the airflow generator is equipped with an air inlet regulator, which can adjust the airflow entering the airflow generator. The change in airflow affects the intensity of the conveying airflow in the conveying pipe and the ability of the conveying airflow to carry tobacco shreds, thereby adjusting the amount of tobacco shreds remixed per unit time. Therefore, compared with the method of manually controlling the amount added based on experience, this application can improve the control accuracy of the tobacco shreds remixing flow rate, so that the tobacco shreds to be remixed enter the production path at a more stable flow rate, which is beneficial to improving the problem of poor remixing uniformity caused by the fluctuating remixing flow rate when manually remixing.

[0020] Furthermore, the hopper is equipped with a vibrator to loosen the tobacco shreds within it. When the vibrator vibrates the hopper, it causes the tobacco shreds to loosen and move towards the feed inlet, reducing the accumulation of tobacco shreds or obstructed feeding within the hopper. This allows the tobacco shreds to enter the conveying pipe more stably through the feed inlet and receiving inlet. Therefore, this application, through the combined use of airflow regulation, vibratory feeding, airflow conveying, and cyclone separation, can improve the flow controllability and feeding stability during the tobacco shred remixing process, thereby helping to improve the problems of poor uniformity and easy blockage during manual remixing.

[0021] The other solution provides a mobile quantitative tobacco blending method using the aforementioned mobile quantitative tobacco blending device. By moving and locking the mobile trolley to the target blending point, it reduces the workload of manual handling and on-site placement adjustments. By adjusting the height of the supporting platform and the discharge direction of the feeding bend, it ensures the feeding bend aligns well with the conveyor belt, reducing tobacco spillage or local accumulation. During the blending process, the airflow generator is first activated to form a conveying airflow. Then, based on the target blending volume per unit time, the air inlet regulator is gradually adjusted from an initial small opening to the target opening. This avoids excessive initial airflow leading to excessive instantaneous conveying volume and improves the control accuracy of the tobacco blending flow rate. Simultaneously, the vibrator vibrates the hopper at preset time intervals, ensuring the tobacco enters the conveying pipe more stably. After the tobacco enters the cyclone separator with the conveying airflow, the cyclone separator rotates and separates the tobacco and airflow. The internal air pressure is adjusted by the breather valve, allowing the separated tobacco to be blended back onto the conveyor belt via the feeding bend. Therefore, this method can improve the continuity, flow controllability, and uniformity of the tobacco shred re-blending process, and reduce the risk of material blockage. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1This is a schematic diagram of the structure of the mobile tobacco quantitative re-blending device provided by the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a flowchart of the mobile tobacco quantitative re-blending method provided by the present invention.

[0024] Figure label: 1. Mobile trolley; 11. Base frame; 12. Casters; 13. Load-bearing platform; 14. Lifting support assembly; 15. Fixed bracket; 151. Installation part; 152. Support part; 2. Airflow generating components; 21. Fan; 22. Support; 23. Air inlet regulating components; 3. Conveying pipe; 4. Feed hopper; 41. Vibrator; 5. Cyclone separator; 51. Breather valve; 52. Second flange; 6. Feeding elbow; 61. Vertical part; 62. Inclined part; 63. First flange; 64. Locking component. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please refer to Figure 1 This embodiment provides a mobile quantitative tobacco re-blending device, mainly used to add tobacco to be re-blended to the conveyor belt of a production line at a relatively stable flow rate. The mobile quantitative tobacco re-blending device includes a mobile trolley 1, an airflow generator 2, a conveying pipe 3, a hopper 4, a cyclone separator 5, and a feeding elbow 6. The airflow generator 2, conveying pipe 3, hopper 4, cyclone separator 5, and feeding elbow 6 are all carried by the mobile trolley 1, which can be pushed to different target re-blending points, allowing the device to be transferred and used between different production lines or different process sections. Compared with the method of manually transporting tobacco to the conveyor belt for direct application, this structure reduces the reliance on manual transfer and manual adjustment of the feeding position in the re-blending operation.

[0027] An airflow generator 2 is mounted on a mobile trolley 1. The airflow generator 2 has an inlet end and an outlet end, with an inlet regulating component 23 at the inlet end. A conveying pipe 3 is mounted on the mobile trolley 1. The conveying pipe 3 has a first end, a second end, and a receiving port located between the first and second ends. The first end of the conveying pipe 3 is connected to the outlet end of the airflow generator 2. When the airflow generator 2 is working, its outlet end supplies airflow to the first end of the conveying pipe 3, creating a conveying airflow flowing from the first end to the second end within the conveying pipe 3. Because the inlet regulating component 23 can adjust the amount of air entering the airflow generator 2, changes in the amount of air entering the airflow generator 2 result in changes in the intensity of the conveying airflow output from the airflow generator 2 to the conveying pipe 3, and consequently, changes in the conveying airflow's ability to carry tobacco. Therefore, during operation, the opening of the inlet regulating component 23 can be adjusted according to the target amount of tobacco remixing per unit time, thereby adjusting the amount of tobacco remixing per unit time and improving the control accuracy of the remixing flow rate.

[0028] A feeding hopper 4 is located on the conveying pipe 3, and the feeding hopper 4 has a discharge port that is connected to the receiving port of the conveying pipe 3. After the recycled tobacco is added to the feeding hopper 4, it falls through the discharge port into the receiving port of the conveying pipe 3 under the action of gravity, and is then carried towards the second end of the conveying pipe 3 by the conveying airflow flowing from the first end to the second end. Since the tobacco enters the conveying pipe 3 from the feeding hopper 4 and is then guided by the conveying airflow, the tobacco no longer mainly relies on the operator to directly scatter it onto the conveyor belt, which helps to make the recycling process more continuous.

[0029] Cyclone separator 5 is mounted on the mobile trolley 1. Cyclone separator 5 has a separation inlet and a discharge outlet, with the separation inlet connected to the second end of the conveying pipe 3. Feeding elbow 6 is connected to the discharge outlet of cyclone separator 5. Tobacco shreds, driven by the conveying airflow, enter cyclone separator 5 through the second end of conveying pipe 3. Cyclone separator 5 separates the tobacco shreds from the airflow. The separated tobacco shreds enter feeding elbow 6 through the discharge outlet and are then discharged to the re-blending position. Thus, this embodiment forms a continuous conveying path from hopper 4, conveying pipe 3, cyclone separator 5 to feeding elbow 6, allowing the tobacco shreds to be continuously conveyed and re-blended into the production path after being added to hopper 4, which is beneficial for improving the continuity of the re-blending process.

[0030] A vibrator 41 is also provided on the hopper 4, which is used to vibrate the hopper 4. When the vibrator 41 vibrates the hopper 4, the tobacco shreds in the hopper 4 are loosened by the vibration and move to the feed inlet, which can reduce the accumulation of tobacco shreds in the hopper 4 or the obstruction of feeding, so that the tobacco shreds can enter the conveying pipe 3 more stably through the feed inlet and the receiving inlet. Therefore, this embodiment, by combining air intake adjustment, vibratory feeding, airflow conveying and cyclone separation, can improve the flow controllability and feeding stability during the tobacco shred remixing process, thereby helping to improve the problems of poor uniformity and easy blockage in manual remixing.

[0031] Considering that the back mixing flow rate is prone to fluctuating when relying solely on the operator's experience to add materials, this embodiment further improves the specific structure of the airflow generator 2 and the air inlet regulator 23 based on the above embodiment, so that the air inlet volume can be adjusted and maintained at the selected opening position.

[0032] Please refer to Figure 1 The airflow generating component 2 includes a fan 21, which is fixed to the mobile trolley 1 by a support 22. The support 22 provides stable support for the fan 21 and reduces the shaking generated during operation. The air inlet regulating component 23 includes a damper located at the air inlet end of the fan 21. The damper includes a baffle plate, a rotating shaft, and a rotating adjusting component. The baffle plate is rotatably located at the air inlet end of the fan 21 via the rotating shaft, and the rotating adjusting component is connected to the rotating shaft. When the operator rotates the rotating adjusting component, the rotating adjusting component drives the rotating shaft and the baffle plate to rotate, thereby changing the blocking area of ​​the baffle plate relative to the air inlet end of the fan 21, and thus changing the flow area at the air inlet end of the fan 21. The rotating adjusting component can also position the baffle plate at different opening positions, so that the damper is not easily deviated from the target opening under vibration or airflow impact. Different opening positions can correspond to different air intake volumes, and thus to different refluxing volumes per unit time, making it convenient for the operator to adjust according to the target refluxing volume.

[0033] In one specific embodiment, the rotating adjustment component may include a knob, a locking nut, and a resilient pressure pad. One end of the rotating shaft extends out of the air inlet of the fan 21. The knob is connected to the extended end of the rotating shaft. When the operator rotates the knob, the knob can drive the baffle plate to rotate relative to the air inlet of the fan 21 through the rotating shaft, thereby changing the area of ​​the baffle plate blocking the air inlet of the fan 21. The locking nut is fitted onto the extended end of the rotating shaft and can press the knob or the resilient pressure pad towards the air inlet of the fan 21, so that the rotating shaft is held at the current angular position under the action of friction, thereby keeping the baffle plate at the corresponding opening position. Thus, the operator can adjust the opening of the baffle plate by rotating the knob, and lock the position of the baffle plate by locking the nut after adjustment, so that the air inlet adjustment component 23 can be stably maintained at the target air inlet opening, which facilitates the adjustment of the air volume entering the fan 21 according to the target unit time remixing amount.

[0034] In other embodiments, the air inlet regulating component 23 may also be an adjustable air inlet valve, butterfly valve, slide gate valve, or other regulating structure that can change the flow area at the air inlet end of the airflow generator 2. That is to say, any structure that can regulate the amount of air entering the airflow generator 2 and can make the amount of air inlet corresponding to the amount of tobacco remixed per unit time can be used as the air inlet regulating component 23 in this application.

[0035] Considering the specific connection position between the discharge hopper 4 and the conveying pipe 3, further improvements have been made to the connection method between the discharge hopper 4 and the conveying pipe 3 based on the above embodiment. Specifically, the receiving port is located on the circumferential surface of the conveying pipe 3, the discharge hopper 4 is located above the conveying pipe 3, and the periphery of the discharge port is sealed and fixedly connected to the periphery of the receiving port. Since the receiving port is located on the circumferential surface of the conveying pipe 3, the tobacco in the discharge hopper 4 can directly enter the conveying pipe 3 under the action of gravity, reducing the stagnation caused by lateral turning during discharge. The periphery of the discharge port and the periphery of the receiving port can be welded and fixed, or they can be sealed and fixedly connected by flanges, gaskets, and fasteners, thereby reducing air leakage, material leakage, or material accumulation at the connection, and ensuring that the tobacco can stably enter the conveying pipe 3.

[0036] Considering the inherent fluffiness of tobacco shreds, if they accumulate at the bottom of the hopper 4, it will affect the stability of the amount of tobacco shreds entering the conveying pipe 3. Therefore, based on the above embodiment, further improvements have been made to the installation position of the vibrator 41. Please refer to... Figure 1 The vibrator 41 is a vibrating motor, which is fixed to the outer wall of the hopper 4 and located near the discharge port. Because the vibrating motor is close to the discharge port, the vibration effect can be directly transmitted to the concentrated tobacco area at the bottom of the hopper 4, causing the tobacco near the discharge port to loosen and enter the conveying pipe 3, thereby reducing blockage and fluctuations at the discharge port. The vibrator 41 can vibrate continuously or intermittently. In an optional embodiment, the vibrator 41 vibrates once every preset time interval, with each vibration lasting a preset duration, for example, vibrating once every thirty seconds for five seconds. The specific time can be adjusted according to the state of the tobacco and the target amount of remixing.

[0037] Considering the need for a stable connection between the delivery pipe 3 and the cyclone separator 5, and that pressure fluctuations within the cyclone separator 5 may affect the smooth flow of tobacco into the separator, further improvements are made based on the above embodiment. Please refer to [reference needed]. Figure 1 The separation inlet is located on the side wall of the cyclone separator 5, and the second end of the conveying pipe 3 is inserted into the separation inlet of the cyclone separator 5, with the second end of the conveying pipe 3 being sealed and fixedly connected to the separation inlet of the cyclone separator 5. This sealed and fixed connection can be a welded connection, a sealing ring and flange connection, or a clamp connection. Therefore, the tobacco and conveying airflow in the conveying pipe 3 can stably enter the cyclone separator 5 through the separation inlet, while reducing the attenuation of the conveying airflow caused by air leakage at the connection point, which is beneficial to improving the stability of the tobacco conveying process.

[0038] Furthermore, the separation inlet can be set tangentially or nearly tangentially along the cyclone separator 5, allowing the tobacco and airflow to flow circumferentially along the inner wall of the cyclone separator 5 after entering, thus facilitating rotational separation. The cyclone separator 5 has an exhaust port located above the separation inlet, and a breather valve 51 is installed at the exhaust port. The breather valve 51 can open and close to regulate the air pressure inside the cyclone separator 5 when there is an abnormality, maintaining the air pressure within the cyclone separator 5 within a suitable range. Specifically, the breather valve 51 can regulate the air pressure inside the cyclone separator 5 through the exhaust port, preventing excessively high air pressure inside the cyclone separator 5 from creating back pressure on the second end of the conveying pipe 3, thus maintaining a pressure difference between the second end of the conveying pipe 3 and the cyclone separator 5 that allows the tobacco to enter the cyclone separator 5. Therefore, the tobacco can smoothly enter the cyclone separator 5 through the separation inlet under the drive of the conveying airflow, and undergo gas-solid separation within the cyclone separator 5, reducing the risk of unstable conveying, material splashing, or blockage caused by abnormal air pressure.

[0039] Considering that the connection between the cyclone separator 5 and the feeding elbow 6 may sway during device movement or adjustment of the discharge direction of the feeding elbow 6, this embodiment further provides a fixed bracket 15 on the moving trolley 1 to improve the stability of the installation position of the cyclone separator 5 and the feeding elbow 6, based on the above embodiment. For details, please refer to... Figure 1 and Figure 2 The fixed bracket 15 includes a mounting part 151 and a supporting part 152. The mounting part 151 is connected to the moving trolley 1. The mounting part 151 can be a plate-like structure or a rod-like structure extending vertically and is fixed in the moving trolley 1 at a position adjacent to the cyclone separator 5, for example, fixed to the support platform 13 or fixed to the edge of the support platform 13. The supporting part 152 is connected to the mounting part 151 and is located below the discharge port of the cyclone separator 5. The supporting part 152 can provide auxiliary support for the cyclone separator 5 and / or the feeding elbow 6, or limit the connection position between the cyclone separator 5 and the feeding elbow 6. Thus, through the cooperation of the mounting part 151 and the supporting part 152, a local support can be formed below the discharge port of the cyclone separator 5, making the connection between the cyclone separator 5 and the feeding elbow 6 more stable and reducing the shaking generated during the adjustment of the feeding elbow 6 or the moving device.

[0040] In one specific embodiment, the mounting portion 151 and the supporting portion 152 can be an integrally formed L-shaped bracket structure. The mounting portion 151 extends vertically and connects to the mobile trolley 1, while the supporting portion 152 bends and extends from the lower end of the mounting portion 151 toward the discharge port of the cyclone separator 5, so as to be located below the discharge port of the cyclone separator 5. By adopting an integrally formed L-shaped bracket structure, no additional assembly connectors are required between the mounting portion 151 and the supporting portion 152, which can improve the structural strength and support stability of the fixed bracket 15 itself, and also facilitate the overall installation of the fixed bracket 15 onto the mobile trolley 1.

[0041] In one specific embodiment, to facilitate the centralized installation of the airflow generator 2, conveying pipe 3, hopper 4, and cyclone separator 5 on the mobile trolley 1, the mobile trolley 1 includes a support platform 13. Please refer to... Figure 1 The support platform 13 has an upper surface for mounting the aforementioned components. The fan 21 can be fixed to the upper surface of the support platform 13 via a support 22 and is positioned close to one side of the support platform 13 in the length direction. The conveying pipe 3 can extend along the length direction of the support platform 13. The first end of the conveying pipe 3 communicates with the outlet end of the fan 21, and the second end of the conveying pipe 3 extends toward the other side of the support platform 13 in the length direction, and can at least partially extend out of or be adjacent to the other side of the support platform 13 in the length direction, so as to communicate with the separation inlet of the cyclone separator 5. The cyclone separator 5 can be located near the other side of the support platform 13 in the length direction. The mounting portion 151 of the fixing bracket 15 can be installed at or near the periphery of the other side of the support platform 13 in the length direction. The supporting portion 152 of the fixing bracket 15 is located below the discharge port of the cyclone separator 5 to provide auxiliary support for the cyclone separator 5 and / or the feeding elbow 6. Therefore, the fan 21, the conveying pipe 3 and the cyclone separator 5 can be arranged sequentially along the length of the carrying platform 13, which is beneficial to shorten the conveying path of the tobacco and the conveying airflow, and also allows space to be installed below the cyclone separator 5 for the feeding elbow 6, so that the feeding elbow 6 can guide the tobacco to the conveyor belt.

[0042] Furthermore, to prevent the conveying pipe 3 from swaying during pneumatic conveying, vibration of the hopper 4, or movement of the moving trolley 1, in an optional embodiment, the conveying pipe 3 can be fixed to the bearing platform 13 by pipe clamps, clamps, or support seats. Specifically, the lower end of the support seat can be fixed to the upper end surface of the bearing platform 13, and the upper end of the support seat forms an arc-shaped support surface adapted to the outer periphery of the conveying pipe 3. The clamp spans the outer periphery of the conveying pipe 3 and is connected to the support seat to press and fix the conveying pipe 3 onto the support seat. Furthermore, elastic gaskets can also be provided between the clamp and the conveying pipe 3 and / or between the support seat and the conveying pipe 3 to reduce vibration wear of the conveying pipe 3 and improve the stability of the connection position between the conveying pipe 3 and the fan 21 and the cyclone separator 5. This fixing method can reduce the shaking of the conveying pipe 3 relative to the bearing platform 13, and keep the first end of the conveying pipe 3 in a relatively stable connection with the air outlet of the fan 21 and the second end of the conveying pipe 3 in a relatively stable connection with the separation inlet of the cyclone separator 5, thereby helping to reduce the risk of air leakage at the connection and unstable tobacco conveying.

[0043] Considering that the lateral position of the conveyor belt or the condition of obstacles on site may vary at different remixing points, if the discharge direction of the feeding elbow 6 is fixed, the entire moving trolley 1 needs to be frequently moved to align with the conveyor belt. This embodiment further improves the installation method of the feeding elbow 6. Specifically, the feeding elbow 6 has a feed end that communicates with the discharge port of the cyclone separator 5. The feed end is rotatably supported on the support part 152. The feeding elbow 6 can rotate relative to the cyclone separator 5 around the axis of the feed end and can be locked relative to the cyclone separator 5 or the fixed bracket 15 by the locking member 64. In use, the operator can first release the locking member 64 to rotate the feeding elbow 6 around the axis of the feed end to the target discharge direction, and then lock the feeding elbow 6 by the locking member 64. In this way, when the moving trolley 1 is basically located at the target remixing point, the discharge direction can be finely adjusted by rotating the feeding elbow 6 without frequent movement of the entire machine, which is beneficial to improving on-site adaptability.

[0044] To further illustrate the rotatable configuration of the feeding elbow 6, please refer to one specific embodiment. Figure 2The feeding elbow 6 includes a vertical portion 61 and an inclined portion 62 communicating with the vertical portion 61. The top end of the vertical portion 61 forms the feed end of the feeding elbow 6. The vertical portion 61 can receive tobacco shreds discharged from the discharge port of the cyclone separator 5, and the inclined portion 62 is used to guide the tobacco shreds out in the target direction. The support portion 152 is provided with a clearance groove, and the vertical portion 61 passes through the clearance groove, so that the support portion 152 can avoid the vertical portion 61 and support its surrounding structure. The top end of the vertical portion 61 is provided with a first flange 63, and the discharge port of the cyclone separator 5 is provided with a second flange 52. The first flange 63 and the second flange 52 are connected by bolts, and the locking member 64 can be bolts. When the direction of the feeding elbow 6 needs to be adjusted, the bolts are loosened to allow the feeding elbow 6 to rotate around the axis of the vertical part 61. After the feeding elbow 6 has rotated to the target discharge direction, the bolts are tightened again to fix the first flange 63 and the second flange 52 relative to each other, thereby fixing the feeding elbow 6 relative to the cyclone separator 5. This method has a simple structure and is easy to adjust and lock on site.

[0045] Considering that the height of the conveyor belt may vary at different remixing points, if the discharge height of the device is fixed, the discharge position of the feeding elbow 6 may not match the height of the conveyor belt, easily causing tobacco shreds to spill or accumulate locally. Based on the above embodiments, this application further improves the load-bearing structure of the mobile trolley 1. Specifically, please refer to... Figure 1 The mobile trolley 1 includes a base frame 11, a support platform 13, and a lifting support assembly 14. The base frame 11 serves as the bottom support foundation for the mobile trolley 1, and casters 12 are provided at the bottom of the base frame 11, with at least some of the casters 12 equipped with brakes. Thus, the mobile trolley 1 can move to the target remixing point via the casters 12, and lock itself in place using the brakes, reducing the risk of displacement of the mobile trolley 1 during the remixing process.

[0046] The carrying platform 13 is mounted above the base frame 11 via a lifting support assembly 14. The airflow generator 2, conveying pipe 3, hopper 4, and cyclone separator 5 are all mounted on the carrying platform 13. The lifting support assembly 14 is used to adjust the height of the carrying platform 13 relative to the base frame 11. When the device moves to the target remixing point, the height of the carrying platform 13 can be adjusted via the lifting support assembly 14 to match the discharge position of the feeding elbow 6 installed on the carrying platform 13 with the height of the conveyor belt. Thus, without replacing the entire machine or constructing additional support structures, the device can be adapted to conveyor belts of different heights, reducing spillage or local accumulation of tobacco shreds caused by height mismatch when discharged from the feeding elbow 6, thereby improving the adaptability and stability of the remixing operation.

[0047] In one specific embodiment, the lifting support assembly 14 may include multiple lifting actuators, which are spaced apart between the base frame 11 and the carrying platform 13. The fixed ends of the multiple lifting actuators are connected to the base frame 11, and the output ends of the multiple lifting actuators jointly support the carrying platform 13. The lifting actuators can be hydraulic cylinders, pneumatic cylinders, electric push rods, or jacks. In use, the multiple lifting actuators extend or retract synchronously to drive the carrying platform 13 to lift as a whole. By using multiple lifting actuators to jointly support the carrying platform 13, the carrying platform 13 can maintain a better level state during the lifting process, thereby reducing the tilting or swaying of the airflow generator 2, conveying pipe 3, hopper 4, and cyclone separator 5 during height adjustment.

[0048] In another specific embodiment, the lifting support assembly 14 may also include multiple telescopic supports. Each telescopic support includes a column body and a support rod. The column body is fixed to the base frame 11, and the support rod is movably inserted into the column body in the vertical direction. The tops of multiple support rods jointly support the bearing platform 13. The column body and the support rod may each be provided with positioning holes. When the bearing platform 13 is adjusted to the target height, the support rod can be locked at the corresponding height position by inserting a pin through the corresponding positioning hole. This structure does not require a complex power drive mechanism, is simple in structure, easy to manufacture and maintain, and is suitable for application scenarios where the conveyor belt height does not change frequently and the height is mainly adjusted manually.

[0049] This application also provides a mobile method for quantitative re-blending of tobacco shreds, which employs the mobile method for quantitative re-blending of tobacco shreds described in any of the foregoing embodiments. Please refer to... Figure 3 In one specific embodiment, the mobile tobacco quantitative re-blending method may include the following steps.

[0050] Step S1: Move the mobile trolley 1 to the target mixing point and lock it.

[0051] Specifically, the operator can push the mobile trolley 1, which will move the airflow generator 2, conveying pipe 3, hopper 4, cyclone separator 5, and feeding elbow 6 as a whole to the target remixing point on the production line. Once in position, the mobile trolley 1 can be locked using the brakes on the casters 12, ensuring stability during the remixing process. This eliminates the need for repeated manual handling of tobacco shreds to different locations, reducing the labor intensity of manual transfer and on-site adjustments.

[0052] Step S2: Adjust the height of the bearing platform 13 so that the discharge position of the feeding elbow 6 matches the height of the conveyor belt.

[0053] Specifically, when the mobile trolley 1 includes a liftable support platform 13, the height of the support platform 13 relative to the base frame 11 can be adjusted via the lifting support assembly 14. Since the airflow generator 2, conveying pipe 3, hopper 4, and cyclone separator 5 are located on the support platform 13, the lifting of the support platform 13 can synchronously raise and lower the discharge position of the feeding elbow 6. This allows the discharge position of the feeding elbow 6 to match the height of the conveyor belt, reducing the spillage, scattering, or localized accumulation of tobacco shreds caused by excessively high or low discharge heights.

[0054] Step S3: Release the locking member 64 from the feeding elbow 6, rotate the feeding elbow 6 to the target discharge direction, and then lock the feeding elbow 6 by the locking member 64.

[0055] Specifically, when it is necessary to adjust the discharge direction, the locking member 64 can be released from the locking of the feeding elbow 6 first, allowing the feeding elbow 6 to rotate relative to the cyclone separator 5; after the discharge direction of the feeding elbow 6 corresponds to the position of the conveyor belt, the feeding elbow 6 can be locked again by the locking member 64. Thus, without moving the entire trolley 1, the discharge direction can be finely adjusted, allowing the tobacco to fall more accurately into the conveyor belt and improving the adaptability of the device to different remixing positions.

[0056] Step S4: Confirm that the breathing valve 51 is in a working state that can regulate the air pressure inside the cyclone separator 5.

[0057] Specifically, before the re-blending operation begins, it can be checked whether the breather valve 51 is clean, unblocked, and can open and close normally. This ensures that if the air pressure inside the cyclone separator 5 is abnormal, the breather valve 51 can regulate the air pressure through the exhaust port. This reduces the risk of unstable tobacco conveying, material splashing, or blockage caused by abnormal air pressure inside the cyclone separator 5.

[0058] Step S5: Add the tobacco shreds to be mixed into the feed hopper 4.

[0059] Specifically, the operator can add the tobacco to be mixed into the hopper 4, which is used to temporarily hold the tobacco and allow it to move from the discharge port to the receiving port of the conveying pipe 3. Since the hopper 4 is connected to the conveying pipe 3, the tobacco can enter the conveying pipe 3 under the action of gravity and subsequent vibration, providing a material source for continuous pneumatic mixing.

[0060] Step S6: Activate the airflow generator 2 to form a conveying airflow from the first end to the second end in the conveying pipe 3.

[0061] Specifically, after the airflow generator 2 is activated, the air outlet of the airflow generator 2 sends airflow to the first end of the conveying pipe 3, so that a conveying airflow flowing towards the second end is formed in the conveying pipe 3, so that the tobacco entering the conveying pipe 3 can be driven and conveyed towards the cyclone separator 5.

[0062] Step S7: Based on the target unit time remixing amount and the preset correspondence between the opening of the air inlet regulator 23 and the unit time remixing amount, the air inlet regulator 23 is gradually adjusted from the initial small opening to the target opening in order to gradually adjust the air inlet volume entering the airflow generator 2.

[0063] Specifically, at the start of the remixing process, the air inlet regulator 23 can be initially set to a small opening. After the airflow generator 2 stabilizes, the opening of the air inlet regulator 23 is gradually increased according to the target remixing amount per unit time. As the opening of the air inlet regulator 23 increases, the airflow entering the airflow generator 2 increases accordingly, and the conveying airflow intensity and tobacco-carrying capacity in the conveying pipe 3 change accordingly, thereby adjusting the remixing amount of tobacco per unit time. This avoids excessively high instantaneous conveying volume due to excessive initial airflow and improves the control accuracy of the remixing flow rate.

[0064] Step S8: Start the vibrator 41 to vibrate the feeding hopper 4 at a preset time interval, so that the tobacco in the feeding hopper 4 enters the conveying pipe 3 through the feeding port and receiving port.

[0065] Specifically, the vibrator 41 can intermittently vibrate the feed hopper 4 at preset time intervals, such as vibrating once every set time period, with each vibration lasting a set duration. When the vibrator 41 vibrates the feed hopper 4, it can loosen the tobacco shreds in the feed hopper 4 and move them towards the feed inlet, reducing the bridging, accumulation, or obstruction of the tobacco shreds in the feed hopper 4, allowing the tobacco shreds to enter the conveying pipe 3 more stably. As a result, the risk of material blockage at the feed hopper 4 can be reduced, and the fluctuation of the feed rate can be reduced.

[0066] Step S9: The tobacco shreds entering the conveying pipe 3 are conveyed towards the second end under the drive of the conveying airflow, and enter the cyclone separator 5 through the separation inlet.

[0067] Specifically, after the tobacco shreds enter the conveying pipe 3 through the receiving port, they are not directly scattered onto the conveyor belt by manual labor. Instead, they move along the conveying pipe 3 towards the second end under the influence of the conveying airflow, and then enter the cyclone separator 5 from the second end of the conveying pipe 3. This creates a continuous conveying path from the hopper 4 to the conveying pipe 3 and then to the cyclone separator 5, allowing the tobacco shreds to enter the subsequent separation and re-blending processes in a more continuous manner.

[0068] Step S10: Cyclone separator 5 causes the tobacco and airflow entering it to rotate and separate. During this process, breathing valve 51 adjusts the air pressure inside cyclone separator 5 through exhaust port. The separated tobacco enters feeding elbow 6 through discharge port and is then mixed back into the conveyor belt by feeding elbow 6.

[0069] Specifically, after the tobacco and airflow enter the cyclone separator 5, they form a rotating flow within the separator, separating the tobacco from the airflow. During the separation process, the breather valve 51 regulates the air pressure within the cyclone separator 5 through the exhaust port, preventing excessively high air pressure from creating adverse back pressure on the conveying pipe 3. This allows the tobacco to enter the cyclone separator 5 smoothly and complete the gas-solid separation. The separated tobacco then enters the feeding elbow 6 through the discharge port of the cyclone separator 5 and is guided by the feeding elbow 6 to the conveyor belt. Therefore, this method enables the tobacco to be remixed to be added to the production path more continuously and stably, improving the controllability and uniformity of the remixing flow rate and reducing the risk of material blockage.

[0070] Furthermore, in an optional embodiment, the mobile tobacco quantitative re-blending method may also include a finishing process step after the re-blending task is completed.

[0071] Step S11: After the re-mixing task is completed, stop adding the tobacco to be re-mixed into the feed hopper 4, and let the airflow generator 2 continue to run for the preset time.

[0072] Specifically, after the feeding stops, the airflow generator 2 continues to run for a period of time, which can use the conveying airflow to continue to discharge the residual tobacco in the conveying pipe 3, cyclone separator 5 and feeding elbow 6, reducing the situation where residual tobacco remains in the conveying channel.

[0073] Step S12: Gradually reduce the air intake regulator 23 from its current opening to the closed state, and turn off the airflow generator 2.

[0074] Specifically, gradually reducing the opening of the air inlet regulator 23 can gradually weaken the conveying airflow, reducing the risk of residual tobacco shreds accumulating in the conveying pipe 3 or cyclone separator 5 due to sudden changes in airflow. Subsequently, the airflow generator 2 can be turned off, and the vibrator 41 can be stopped.

[0075] Step S13: Disconnect the main power supply to the device and clean the residual tobacco inside the device.

[0076] Specifically, the internal channels of the hopper 4, conveying pipe 3, cyclone separator 5, and feeding elbow 6 can be cleaned. Cleaning methods can include manual sweeping, suction cleaning, or external compressed air blowing to remove residual tobacco shreds and prevent residual tobacco shreds from becoming damp and clumping together or adhering for a long time, which would affect the next re-blending operation.

[0077] Step S14: Check whether the breathing valve 51 is clean and unobstructed, and confirm that the breathing valve 51 can open and close normally.

[0078] Specifically, after cleaning, checking the breather valve 51 can ensure that the air pressure in the cyclone separator 5 can be effectively regulated during the subsequent remixing process, reducing the risk of abnormal air pressure caused by blockage or abnormal opening and closing of the breather valve 51.

[0079] Step S15: Adjust the support platform 13 to a lower or lowest position.

[0080] Specifically, if the mobile trolley 1 includes a liftable support platform 13, the support platform 13 can be adjusted to a lower or lowest position by the lifting support assembly 14 after the device is cleaned, so as to lower the overall center of gravity of the device and facilitate its transfer and storage.

[0081] Step S16: Release the brake of the caster 12 from locking the mobile trolley 1, and transfer the mobile trolley 1 to the designated storage area.

[0082] Specifically, by transferring the mobile trolley 1 to the designated storage area, the space occupied by the device on the production line can be reduced. At the same time, in conjunction with the aforementioned cleaning and resetting operations, the unobstructed flow of the internal conveying channels of the device can be maintained, the impact of residual tobacco on the next re-blending operation can be reduced, and the stability of the device transfer and storage process can be improved.

[0083] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0084] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0085] The present invention provides a detailed description of a mobile tobacco quantitative re-blending device and method. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely illustrative of the method and core ideas of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A mobile tobacco shred quantitative re-blending device, characterized in that, include: Mobile cart (1); An airflow generator (2) is provided on the mobile trolley (1). The airflow generator (2) has an air inlet end and an air outlet end. The air inlet end is provided with an air inlet regulator (23). The air inlet regulator (23) is used to regulate the amount of air entering the airflow generator (2). A conveying pipe (3) is provided on the mobile trolley (1). The conveying pipe (3) has a first end, a second end and a receiving port located between the first end and the second end. The first end is connected to the air outlet of the airflow generator (2). A discharge hopper (4) is provided on the conveying pipe (3). The discharge hopper (4) has a discharge port, which is connected to the receiving port. A vibrator (41) is provided on the discharge hopper (4). The vibrator (41) is used to vibrate the discharge hopper (4). Cyclone separator (5) is provided on the mobile trolley (1). The cyclone separator (5) has a separation inlet and a discharge outlet. The separation inlet is connected to the second end of the conveying pipe (3). The feeding elbow (6) is connected to the discharge port of the cyclone separator (5); The airflow generator (2) is used to form a conveying airflow from the first end to the second end in the conveying pipe (3) so as to drive the tobacco shreds entering the conveying pipe (3) through the receiving port to be conveyed towards the second end; the air inlet regulator (23) adjusts the amount of tobacco shreds mixed back per unit time by adjusting the air inlet volume.

2. The mobile tobacco quantitative blending device according to claim 1, characterized in that, The airflow generating component (2) includes a fan (21), and the air inlet regulating component (23) includes a damper disposed at the air inlet end of the fan (21); The damper includes a baffle plate, a rotating shaft, and a rotating adjustment component. The baffle plate is rotatably mounted on the air inlet end of the fan (21) via the rotating shaft. The rotating adjustment component is connected to the rotating shaft and is used to drive the baffle plate to rotate, thereby changing the flow area at the air inlet end of the fan (21) and positioning the baffle plate at different opening positions.

3. The mobile tobacco quantitative blending device according to claim 1, characterized in that, The receiving port is located on the upper surface of the conveying pipe (3), the dropping hopper (4) is located above the conveying pipe (3), and the periphery of the discharge port is sealed and fixedly connected to the periphery of the receiving port.

4. The mobile tobacco quantitative blending device according to claim 1, characterized in that, The vibrator (41) is a vibrating motor, which is fixed to the outer wall of the hopper (4) and located near the discharge port.

5. The mobile tobacco shred quantitative blending device according to claim 1, characterized in that, The separation inlet is located on the side wall of the cyclone separator (5), and the second end of the conveying pipe (3) is inserted into the separation inlet of the cyclone separator (5). The second end of the conveying pipe (3) is sealed and fixedly connected to the separation inlet of the cyclone separator (5). The cyclone separator (5) is provided with an exhaust port at a position higher than the separation inlet, and a breather valve (51) is provided at the exhaust port.

6. The mobile tobacco shred quantitative blending device according to claim 1, characterized in that, The mobile trolley (1) is provided with a fixed bracket (15), which includes an installation part (151) and a support part (152). The installation part (151) is connected to the mobile trolley (1), and the support part (152) is located below the discharge port of the cyclone separator (5) to support the cyclone separator (5) and / or the feeding elbow (6).

7. The mobile tobacco shred quantitative blending device according to claim 6, characterized in that, The feeding elbow (6) has a feed end that communicates with the discharge port. The feed end is rotatably supported on the support part (152). The feeding elbow (6) can rotate relative to the cyclone separator (5) about the axis of the feed end and can be locked relative to the cyclone separator (5) or the fixed bracket (15) by a locking member (64).

8. The mobile tobacco shred quantitative blending device according to claim 7, characterized in that, The feeding elbow (6) includes a vertical part (61) and an inclined part (62) communicating with the vertical part (61). The top end of the vertical part (61) forms the feed end. The support part (152) is provided with a relief groove. The vertical part (61) passes through the relief groove. The top end of the vertical part (61) is provided with a first flange (63). The discharge port of the cyclone separator (5) is provided with a second flange (52). The first flange (63) and the second flange (52) are connected by bolts. When the bolts are released, the feeding elbow (6) can rotate around the axis of the vertical part (61). When the bolts are tightened, the feeding elbow (6) is fixed relative to the cyclone separator (5).

9. The mobile tobacco quantitative blending device according to any one of claims 1 to 8, characterized in that, The mobile trolley (1) includes a base frame (11), a carrying platform (13), and a lifting support assembly (14). The bottom of the base frame (11) is provided with casters (12), and at least some of the casters (12) are provided with brakes. The carrying platform (13) is located above the base frame (11) via the lifting support assembly (14). The airflow generator (2), the conveying pipe (3), the hopper (4), and the cyclone separator (5) are located on the carrying platform (13). The lifting support assembly (14) is used to adjust the height of the carrying platform (13) relative to the base frame (11).

10. A method for quantitative re-blending of mobile tobacco shreds, characterized in that, Using the mobile tobacco quantitative blending device as described in any one of claims 1 to 9, the mobile trolley (1) includes a liftable support platform (13), the feeding elbow (6) is locked relative to the cyclone separator (5) by a locking member (64), the cyclone separator (5) is provided with an exhaust port and a breathing valve (51) communicating with the exhaust port, and the mobile tobacco quantitative blending method includes: Move the mobile trolley (1) to the target mixing point and lock it; Adjust the height of the bearing platform (13) so that the discharge position of the feeding elbow (6) matches the height of the conveyor belt; Release the locking member (64) from the feeding elbow (6), rotate the feeding elbow (6) to the target discharge direction, and then lock the feeding elbow (6) by the locking member (64). Confirm that the breathing valve (51) is in a working state that can regulate the air pressure inside the cyclone separator (5); Add the tobacco shreds to be recycled into the hopper (4); Activate the airflow generator (2) to form a conveying airflow from the first end to the second end in the conveying pipe (3); According to the target unit time back mixing amount and the preset correspondence between the opening of the air inlet regulator (23) and the unit time back mixing amount, the air inlet regulator (23) is gradually adjusted from the initial small opening to the target opening in order to gradually adjust the air inlet amount entering the airflow generator (2); Start the vibrator (41) to vibrate the hopper (4) at a preset time interval, so that the tobacco in the hopper (4) enters the conveying pipe (3) through the discharge port and the receiving port. The tobacco shreds entering the conveying pipe (3) are conveyed toward the second end under the drive of the conveying airflow, and enter the cyclone separator (5) through the separation inlet; The cyclone separator (5) causes the tobacco and airflow entering it to rotate and separate. During this process, the breathing valve (51) regulates the air pressure in the cyclone separator (5) through the exhaust port. The separated tobacco enters the feeding elbow (6) through the discharge port and is then fed back to the conveyor belt by the feeding elbow (6).

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