Tobacco leaf processing pretreatment equipment

Abstract

The invention discloses tobacco leaf processing pretreatment equipment, and relates to the technical field of tobacco processing. The tobacco leaf processing pretreatment equipment comprises a base, a first conveying belt, a second conveying belt, a screening assembly and an air injection assembly. The first conveying belt and the second conveying belt are both arranged on the base and are in transmission connection with a first driving motor on the base, and the first conveying belt and the second conveying belt are used for conveying tobacco leaves to be processed; the screening assembly is arranged on the base and located between the output end of the first conveying belt and the input end of the second conveying belt. The two air injection assemblies are correspondingly arranged above the conveying surfaces of the first conveying belt and the second conveying belt respectively; according to the tobacco leaf processing pretreatment equipment, light impurities on the surfaces of tobacco leaves are blown away and removed through the air injection assembly, heavy impurities in the tobacco leaves are screened out through the screening assembly, sufficient impurity removal pretreatment on the tobacco leaves is conveniently achieved, and the subsequent tobacco production quality is ensured.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing technology, and in particular to a pretreatment device for tobacco leaf processing. Background Technology

[0002] In the tobacco industry's production process, tobacco leaf processing is a crucial step, as its quality directly determines the final quality and market competitiveness of tobacco products. After harvesting from the field, tobacco leaves inevitably contain impurities such as soil, sand, straw, and insect carcasses. If these impurities are not removed, they will cause severe wear and tear on equipment during subsequent processing stages such as shredding, drying, and rolling, shortening equipment lifespan and increasing maintenance costs and downtime. Furthermore, the presence of impurities also affects the taste, aroma, and combustion performance of tobacco products. In addition, tobacco leaves are highly susceptible to damage from various factors during growth, transportation, and storage. These damaged parts not only lose their value as qualified raw materials but, if not removed, will also transfer their undesirable characteristics to other healthy tobacco leaves during processing, further affecting the quality stability of the entire batch. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to overcome the shortcomings of related technologies, and the present invention provides a tobacco leaf processing pretreatment device.

[0004] This invention provides the following technical solution: A tobacco leaf processing pretreatment device includes a base, a first conveyor belt, a second conveyor belt, a screening component, and an air jet component.

[0005] The first conveyor belt and the second conveyor belt are both mounted on the base and are respectively connected to the first drive motor on the base. The first conveyor belt and the second conveyor belt are used to transport tobacco leaves to be processed. The screening component is disposed on the base and is located between the output end of the first conveyor belt and the input end of the second conveyor belt. The screening component is used to remove impurities from the tobacco leaves transported from the first conveyor belt to the second conveyor belt. Two air jet components are provided and are respectively disposed above the conveying surfaces of the first conveyor belt and the second conveyor belt. The air jet components are used to blow away and remove impurities from the tobacco leaves transported by the first conveyor belt and the second conveyor belt.

[0006] As a further improvement to the above technical solution, the first conveyor belt and the second conveyor belt are arranged vertically, the first drive motor is connected to one of the drive shafts of the first conveyor belt, the drive shafts of the first conveyor belt and the second conveyor belt are connected by gear transmission, the material conveying directions of the first conveyor belt and the second conveyor belt are opposite, and the output end of the first conveyor belt is located above the input end of the second conveyor belt.

[0007] As a further improvement to the above technical solution, the screening component includes a U-shaped guide plate, which surrounds the output end of the first conveyor belt and together with the output end of the first conveyor belt forms a guide channel. One end of the guide channel is open and communicates with the conveying surface of the first conveyor belt, and the other end of the guide channel is open and communicates with the conveying surface of the second conveyor belt. Screening holes are evenly distributed on the guide plate.

[0008] As a further improvement to the above technical solution, a discharge hopper is provided below the output end of the second conveyor belt.

[0009] As a further improvement to the above technical solution, the screening assembly further includes a vibrating frame and a transmission disc; the vibrating frame is provided with a guide member, which is retractably and horizontally inserted into a guide groove on the base; the vibrating frame is fixedly connected to the guide plate and the discharge hopper respectively; the transmission disc is mounted on the base and is driven by the drive shaft of the first conveyor belt or the second conveyor belt through bevel gear meshing; the end face of the transmission disc is provided with an eccentrically arranged mating shaft, the axis of the mating shaft is perpendicular to the guiding direction of the guide groove; the vibrating frame is provided with an elongated mating groove corresponding to the mating shaft, and the mating shaft passes through the mating groove; the drive shaft of the first conveyor belt or the second conveyor belt drives the transmission disc to rotate, which enables the mating shaft to drive the vibrating frame to reciprocate along the guiding direction of the guide groove, thereby driving the guide plate and the discharge hopper to reciprocate relative to the first conveyor belt or the second conveyor belt.

[0010] As a further improvement to the above technical solution, a waste collection hopper is provided below both the guide plate and the discharge hopper.

[0011] As a further improvement to the above technical solution, the jet assembly includes a nozzle, a sliding seat, and a first lead screw. The nozzle is mounted on the sliding seat and faces the conveying surface of the first conveyor belt or the second conveyor belt. The sliding seat is mounted on baffles on both sides of the conveying surface of the first conveyor belt or the second conveyor belt. The first lead screw is mounted on one of the baffles of the first conveyor belt or the second conveyor belt. The axis of rotation of the first lead screw is parallel to the conveying direction of the first conveyor belt or the second conveyor belt. The first lead screw passes through the sliding seat by means of a threaded connection. The first lead screw is connected to a second drive motor on the baffle of the first conveyor belt or the second conveyor belt.

[0012] As a further improvement to the above technical solution, a guide rod corresponding to the first lead screw is provided on the baffle plate at the other end of the sliding seat away from the first lead screw. The axis of the guide rod is parallel to the axis of the first lead screw, and the guide rod passes through the sliding seat.

[0013] As a further improvement to the above technical solution, the sliding seat is provided with a sliding groove, a slider is installed in the sliding groove, the nozzle is installed on the slider, and the sliding seat is also provided with a second lead screw. The axis of the second lead screw is parallel to the sliding direction of the slider in the sliding groove, and the axis of the second lead screw is perpendicular to the material conveying direction of the first conveyor belt or the second conveyor belt. The second lead screw passes through the slider by means of threaded engagement. The sliding seat is also provided with a third drive motor corresponding to the second lead screw, and the third drive motor is connected to the second lead screw in a transmission connection.

[0014] As a further improvement to the above technical solution, a camera is also installed on the slider, and the shooting direction of the camera is the same as the orientation of the nozzle.

[0015] Compared with related technologies, the advantages of this invention are: The tobacco leaf pretreatment equipment provided by this invention requires the operator to evenly place the tobacco leaves to be pretreated at the starting position of the conveyor surface of the first conveyor belt when pretreatment is required. The first conveyor belt operates continuously at a stable speed, which can smoothly transport and move the tobacco leaves placed on it, ensuring that the tobacco leaves do not accumulate or leak during the transportation process.

[0016] As the tobacco leaves move along the first conveyor belt, the jetting assembly located above the conveyor belt begins to operate. According to preset parameters, the jetting assembly precisely delivers airflow to the tobacco leaves passing below, effectively agitating their surfaces. Lightweight impurities such as dust adhering to the tobacco leaf surface are blown away and removed by the airflow, resulting in a cleaner tobacco leaf surface.

[0017] After the tobacco leaves are discharged from the output end of the first conveyor belt, they enter the screening component. The screening component can remove heavy impurities or unqualified materials that are small in size but large in mass from the tobacco leaves. These heavy impurities or unqualified materials will separate from the tobacco leaves under the action of the screening component, while the qualified tobacco leaves that have passed the screening can continue to move downwards.

[0018] The tobacco leaves, after being screened by the screening component, continue to fall onto the conveyor surface of the second conveyor belt. It is worth noting that during this process, the tobacco leaves undergo a certain degree of tumbling due to gravity, collisions, and other factors. This tumbling exposes the previously unswept surfaces of the tobacco leaves, providing favorable conditions for further cleaning.

[0019] As the tobacco leaves pass through the second conveyor belt, the air jet assembly above the belt sequentially blows through them, removing any remaining light impurities from the surface. After being swept by the air jet assembly above the second conveyor belt, the tobacco leaves are cleaner, meeting the pretreatment requirements, and are finally discharged from the equipment.

[0020] Through the aforementioned pretreatment process for tobacco leaves, this equipment can effectively and comprehensively remove both light and heavy impurities mixed in with the tobacco leaves. The entire process is highly efficient and thorough, not only significantly improving the quality of the raw tobacco leaves but also providing high-quality raw materials for subsequent tobacco processing, thereby enhancing the quality of subsequent tobacco production and providing strong support for the tobacco industry.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a tobacco processing pretreatment device according to one embodiment of the present invention; Figure 2 This diagram shows another perspective view of the pretreatment equipment for tobacco processing in one embodiment of the present invention. Figure 3 An exploded view of the structure of a tobacco processing pretreatment device according to one embodiment of the present invention is shown. Figure 4 A partial structural schematic diagram of a tobacco processing pretreatment device according to an embodiment of the present invention is shown.

[0024] Explanation of key component symbols: 100-Base; 110-First drive motor; 120-Guide groove; 130-Waste collection hopper; 200-First conveyor belt; 210-Baffle; 211-Second drive motor; 212-Guide rod; 300-Second conveyor belt; 400-Screwing assembly; 410-Guide plate; 411-Guide channel; 412-Screwing hole; 420-Discharge hopper; 430-Vibrating frame; 431-Guide component; 432-Matching groove; 440-Transmission disc; 441-Matching shaft; 500-Air jet assembly; 510-Nozzle; 520-Sliding seat; 521-Sliding groove; 522-Slider; 523-Second lead screw; 524-Third drive motor; 525-Camera; 530-First lead screw. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] like Figure 1 As shown, an embodiment of the present invention provides a tobacco leaf processing pretreatment device, including a base 100, a first conveyor belt 200, a second conveyor belt 300, a screening component 400, and an air jet component 500.

[0031] The first conveyor belt 200 and the second conveyor belt 300 are both mounted on the base 100 and are respectively connected to the first drive motor 110 on the base 100. The first conveyor belt 200 and the second conveyor belt 300 are used to transport tobacco leaves to be processed. The screening component 400 is disposed on the base 100 and is located between the output end of the first conveyor belt 200 and the input end of the second conveyor belt 300. The screening component 400 is used to screen out small heavy impurities such as sand and gravel from the tobacco leaves transported from the first conveyor belt 200 to the second conveyor belt 300. Two air jet components 500 are provided and are respectively disposed above the conveying surfaces of the first conveyor belt 200 and the second conveyor belt 300. The air jet components 500 are used to blow away light impurities such as dust and powder on the tobacco leaves transported by the first conveyor belt 200 and the second conveyor belt 300.

[0032] The tobacco leaf pretreatment equipment provided in this embodiment requires the operator to evenly place the tobacco leaves to be pretreated at the starting position of the conveying surface of the first conveyor belt 200 when pretreatment of tobacco leaves is required. The first conveyor belt 200 operates continuously at a stable speed, which can smoothly transport and move the tobacco leaves placed on it, ensuring that the tobacco leaves do not accumulate or leak during the transportation process.

[0033] As the tobacco leaves move along the first conveyor belt 200, the jetting assembly 500 located above the first conveyor belt 200 begins to operate. The jetting assembly 500 precisely sprays airflow onto the tobacco leaves passing below according to preset parameters, effectively agitating the surface of the tobacco leaves. Lightweight impurities such as dust adhering to the surface of the tobacco leaves are blown away and removed by the impact of the airflow, resulting in a cleaner tobacco leaf surface.

[0034] After the tobacco leaves are discharged from the output end of the first conveyor belt 200, they enter the screening component 400. The screening component 400 can remove heavy impurities or unqualified materials that are small in size but large in mass from the tobacco leaves. Under the action of the screening component 400, these heavy impurities or unqualified materials will separate from the tobacco leaves, while the qualified tobacco leaves after screening can continue to move downwards.

[0035] The tobacco leaves, after being screened by the screening component 400, continue to fall onto the conveyor surface of the second conveyor belt 300. It is worth noting that during this process, the tobacco leaves undergo a certain degree of tumbling due to gravity, collisions, and other factors. This tumbling exposes the previously sifted surfaces of the tobacco leaves, providing favorable conditions for further cleaning.

[0036] As the tobacco leaves pass over the second conveyor belt 300, the jetting assembly 500 above the second conveyor belt 300 sequentially blows through the leaves below, further removing any light impurities that may remain on the surface of the leaves. After being blew by the jetting assembly 500 above the second conveyor belt 300, the tobacco leaves become cleaner, meeting the pretreatment requirements, and are finally discharged from the equipment.

[0037] In some specific embodiments, the first conveyor belt 200 and the second conveyor belt 300 are arranged vertically. The first drive motor 110 is connected to one of the drive shafts of the first conveyor belt 200. The drive shafts of the first conveyor belt 200 and the second conveyor belt 300 are connected by gear transmission. The conveying directions of the first conveyor belt 200 and the second conveyor belt 300 are opposite, and the output end of the first conveyor belt 200 is located above the input end of the second conveyor belt 300. By arranging the first conveyor belt 200 and the second conveyor belt 300 vertically, many significant advantages are brought about. First, after the tobacco leaf material is discharged from the first conveyor belt 200, it will be screened by the screening component 400. Then, during the process of falling onto the second conveyor belt 300, the tobacco leaf material can fall more quickly due to gravity. This rapid falling process can effectively reduce the accumulation of material at the screening component 400. If too much material accumulates at the screening component 400, it will not only affect the normal operation of the screening component 400 and reduce screening efficiency, but may also cause some material to not be fully screened, thus affecting the pretreatment quality. The vertical arrangement effectively avoids this problem and improves the overall quality of pretreatment.

[0038] Secondly, the tobacco leaves undergo more thorough tumbling motion as they fall under gravity. This tumbling motion exposes all surfaces of the tobacco leaves, allowing the screening component 400 to screen them from different angles. As a result, the screening component 400 can more accurately identify and remove heavy impurities or substandard materials mixed in with the tobacco leaves, significantly improving its screening efficiency.

[0039] Finally, after thorough tumbling, the tobacco leaves fall onto the second conveyor belt 300, where dust and other impurities are more evenly distributed and more exposed. At this point, the air jet assembly 500 on the second conveyor belt 300 can more effectively blow away dust and other impurities from the tobacco leaves. The airflow from the air jet assembly 500 can more comprehensively cover the surface of the tobacco leaves, thoroughly removing residual impurities and further improving the cleanliness of the tobacco leaves, providing higher-quality raw materials for subsequent processing.

[0040] Combination Figure 2 , Figure 3As shown, in some specific embodiments, the screening component 400 includes a U-shaped guide plate 410. The guide plate 410 surrounds the output end of the first conveyor belt 200 and together with the output end of the first conveyor belt 200, forms a guide channel 411. One end of the guide channel 411 is open and communicates with the conveying surface of the first conveyor belt 200, and the other end of the guide channel 411 is open and communicates with the conveying surface of the second conveyor belt 300. With this design, the guide channel 411 can accurately guide the tobacco material to move smoothly from the first conveyor belt 200 to the second conveyor belt 300 along a predetermined path.

[0041] As the tobacco leaves move along the inner wall of the guide plate 410, they undergo a more thorough tumbling motion. This is due to the U-shaped structure of the guide plate 410 and its relative position to the conveyor belt, which causes the material to be subjected to a combination of forces, including gravity and friction, resulting in tumbling. This thorough tumbling motion has several advantages. Firstly, it allows all surfaces of the tobacco leaves to be fully exposed, facilitating subsequent screening and cleaning. Secondly, compared to linear movement, tumbling motion provides better control over the material's trajectory, significantly reducing the probability of spillage, ensuring the integrity and stability of the material during transport, and minimizing material loss.

[0042] Furthermore, the guide plate 410 is evenly distributed with screening holes 412. The size and distribution of these screening holes 412 have been precisely calculated and experimentally verified, and they have specific screening functions. When the tobacco leaves pass through the guide plate 410, the smaller but heavier impurities in the material, due to their own characteristics, will separate from the tobacco leaves under the action of gravity and the impact force during material movement, and will be discharged through these screening holes 412. The qualified tobacco leaves, due to their size and mass, cannot pass through the screening holes 412 and will continue to move along the guide channel 411, eventually falling onto the second conveyor belt 300. In this way, the screening component 400 can effectively remove heavy impurities from the tobacco leaves, improving the quality of the tobacco leaves and providing higher-quality raw materials for subsequent processing.

[0043] In some specific embodiments, a discharge hopper 420 is provided below the output end of the second conveyor belt 300 to facilitate the centralized collection and holding of tobacco leaf material discharged from the second conveyor belt 300. The tobacco leaf material collected by the discharge hopper 420 is more regular and orderly, greatly facilitating subsequent processing. Subsequent processing steps no longer require additional time and effort to sort and collect the material; further operations such as drying and shredding can be performed directly on the collected tobacco leaf material in the discharge hopper 420, thereby improving the efficiency and continuity of the entire tobacco processing production.

[0044] In some specific embodiments, the screening assembly 400 further includes a vibrating frame 430 and a transmission disc 440; the vibrating frame 430 is provided with a guide member 431, which is retractably and horizontally inserted into a guide groove 120 on the base 100; the vibrating frame 430 is fixedly connected to the guide plate 410 and the discharge hopper 420 respectively; the transmission disc 440 is mounted on the base 100 and is driven by the transmission shaft of the first conveyor belt 200 or the second conveyor belt 300 through bevel gear meshing; the end face of the transmission disc 440 is provided with an eccentrically arranged mating shaft 441, the axis of which is perpendicular to the guiding direction of the guide groove 120. The vibrating frame 430 is provided with an elongated mating groove 432 corresponding to the mating shaft 441, and the mating shaft 441 passes through the mating groove 432. The drive shaft of the first conveyor belt 200 or the second conveyor belt 300 drives the drive disc 440 to rotate, which enables the mating shaft 441 to drive the vibrating frame 430 to reciprocate along the guiding direction of the guide groove 120, thereby driving the guide plate 410 and the discharge hopper 420 to reciprocate relative to the first conveyor belt 200 or the second conveyor belt 300. This reciprocating movement of the vibrating frame 430 will further drive the guide plate 410 and the discharge hopper 420 to reciprocate relative to the first conveyor belt 200 or the second conveyor belt 300. For the guide plate 410, this reciprocating movement can cause the tobacco material passing over its surface to generate more intense vibration and tumbling. Heavy impurities that were originally attached to the surface of the tobacco leaves or mixed between the tobacco leaves are more easily separated from the tobacco leaves under this violent vibration and tumbling action, and are discharged through the screening holes 412 on the guide plate 410, thereby effectively improving the screening effect of the guide plate 410 on the tobacco leaf material.

[0045] For the discharge hopper 420, the reciprocating movement driven by the vibrating frame 430 causes the tobacco raw materials falling into the discharge hopper 420 to continuously shake and redistribute. Tobacco raw materials that might have accumulated in a certain area of ​​the discharge hopper 420 will gradually disperse and become more evenly distributed under this reciprocating movement. As a result, when receiving and processing the tobacco raw materials in the discharge hopper 420, no additional sorting and homogenization treatment is required, greatly improving the efficiency and convenience of subsequent processing.

[0046] In some specific embodiments, a waste collection hopper 130 is provided below both the guide plate 410 and the discharge hopper 420. During operation, the screening holes 412 on the guide plate 410 screen out small-volume, large-weight heavy impurities from the tobacco material, as well as some powder generated after crushing. These impurities and powder fall from the guide plate 410 during screening. Without a dedicated collection device, they will scatter around the equipment, causing pollution to the working environment and increasing the workload of subsequent cleaning. The waste collection hopper 130, located below the guide plate 410, has an opening size and position that matches the screening area of ​​the guide plate 410, accurately receiving and collecting the impurities and powder screened out by the guide plate 410.

[0047] Looking at the discharge hopper 420, while its main function is to distribute the tobacco raw materials falling into it more evenly during the reciprocating movement driven by the vibrating frame 430, some small materials or loosely attached impurities inevitably shake out of the discharge hopper 420 during the movement. If these shaken materials are scattered randomly, they will also affect the cleanliness of the working environment and hinder the subsequent unified processing of materials. The waste collection hopper 130, which is set below the discharge hopper 420, can collect these shaken materials in a timely manner, preventing them from scattering everywhere.

[0048] By setting waste collection hoppers 130 below the guide plate 410 and the discharge hopper 420 respectively, impurities and powders screened from the guide plate 410 and materials shaken out from the discharge hopper 420 can be collected separately. This separate collection method has many advantages. On the one hand, different types of impurities and materials are collected separately, which facilitates targeted processing according to their different properties and uses, improving the efficiency and effectiveness of processing. On the other hand, it avoids different impurities and materials from mixing together, reducing subsequent separation processes and lowering processing costs.

[0049] In some specific embodiments, the jet assembly 500 includes a nozzle 510, a sliding seat 520, and a first lead screw 530. The nozzle 510 is mounted on the sliding seat 520 and faces the conveying surface of the first conveyor belt 200 or the second conveyor belt 300. The nozzle 510 is connected to an external gas delivery device through a pipe. The sliding seat 520 is mounted on baffles 210 on both sides of the conveying surface of the first conveyor belt 200 or the second conveyor belt 300. The baffles 210 provide a stable mounting base for the sliding seat 520 and also limit the tobacco material on the conveyor belt to prevent the material from falling during the conveying process. The first lead screw 530 is mounted on one of the baffles 210 of the first conveyor belt 200 or the second conveyor belt 300. The axis of rotation of the first lead screw 530 is parallel to the conveying direction of the first conveyor belt 200 or the second conveyor belt 300. The first lead screw 530 passes through the sliding seat 520 by a threaded connection. The first lead screw 530 is connected to a second drive motor 211 on the baffle 210 of the first conveyor belt 200 or the second conveyor belt 300. After receiving a control signal from the operator, the second drive motor 211 can rotate according to the set speed and direction, thereby driving the first lead screw 530 to rotate. Through this transmission method, the operator can conveniently adjust the position of the nozzle 510 above the conveying surface of the first conveyor belt 200 or the second conveyor belt 300 according to actual production needs. For example, when it is necessary to focus on cleaning tobacco leaves at different positions on the conveyor belt, the operator can control the second drive motor 211 to rotate the first lead screw 530, which will drive the sliding seat 520 and the nozzle 510 to move to the corresponding positions, ensuring that the jet assembly 500 achieves the best cleaning effect on the tobacco leaves, improving the cleanliness and quality of the tobacco leaves, and providing better raw materials for subsequent processing.

[0050] In some specific embodiments, the other end of the sliding seat 520 opposite to the first lead screw 530 is provided with a guide rod 212 corresponding to the first lead screw 530 on the baffle 210. The axis of the guide rod 212 is parallel to the axis of the first lead screw 530. The guide rod 212 passes through the sliding seat 520, which facilitates reliable support and guidance when the sliding seat 520 moves relative to the baffle 210, ensuring the reliability of this embodiment.

[0051] like Figure 4As shown, in some specific embodiments, the sliding seat 520 has a sliding groove 521, and a slider 522 is installed in the sliding groove 521. The nozzle 510 is mounted on the slider 522. The sliding seat 520 also has a second lead screw 523. The axis of the second lead screw 523 is parallel to the sliding direction of the slider 522 in the sliding groove 521, and the axis of the second lead screw 523 is perpendicular to the conveying direction of the first conveyor belt 200 or the second conveyor belt 300. The second lead screw 523 passes through the slider 522 by a threaded connection. The sliding seat 520 also has a third drive motor 524 corresponding to the second lead screw 523. The third drive motor 524 is connected to the second lead screw 523 for transmission. When the operator needs to adjust the lateral position of the nozzle 510 on the conveying surface of the first conveyor belt 200 or the second conveyor belt 300, only the third drive motor 524 needs to be started. The third drive motor 524 rotates according to the set speed and direction, driving the second lead screw 523 to rotate synchronously. The rotation of the second lead screw 523 causes the slider 522 to move within the sliding groove 521, which in turn drives the nozzle 510 mounted on the slider 522 to move along the sliding groove 521. In this way, operators can finely adjust the lateral position of the nozzle 510 according to actual production needs. For example, if a large amount of impurities are found attached to tobacco leaves in a certain area of ​​the conveyor belt, the nozzle 510 can be moved above that area to enhance the purging of the tobacco leaves in that area; or the position of the nozzle 510 can be flexibly adjusted according to the distribution characteristics of different batches of tobacco leaves to achieve the best purging effect.

[0052] This finely adjustable design of the lateral position of the nozzle 510 greatly improves the operator's control over the nozzle 510, enabling the jet assembly 500 to act more precisely on the tobacco material, and further improving the purging effect of the jet assembly 500 on the tobacco material.

[0053] In some specific embodiments, the slider 522 is also equipped with a camera 525, and the shooting direction of the camera 525 is the same as that of the nozzle 510. This design makes the image area captured by the camera 525 highly overlap with the area where the airflow of the nozzle 510 acts, which can reflect the blowing situation of the nozzle 510 on the tobacco material in a real and intuitive way.

[0054] In actual production, when the jet assembly 500 starts working and the nozzle 510 sprays airflow onto the tobacco material on the first conveyor belt 200 or the second conveyor belt 300 to sweep it, the camera 525 simultaneously activates its recording function. It can record in real time the dynamic changes of the tobacco material under the action of the airflow, including details such as the removal of dust and impurities from the tobacco surface, and the degree of tumbling and dispersion of the tobacco leaves. These images are transmitted via data cable to the operator's terminal, such as a computer screen or monitoring display.

[0055] By observing the footage captured by camera 525, staff can make more efficient and accurate judgments. For example, the footage may clearly show that some areas of tobacco still have a lot of impurities attached, indicating that the purging effect in those areas is not ideal, possibly because the nozzle 510 is too far from the area or the airflow intensity is insufficient. Alternatively, it may show that some tobacco has excessively tumbled and piled up after purging, which may be caused by uneven airflow distribution due to improper nozzle 510 positioning. Based on this intuitive visual information, staff can quickly identify the problem and make more accurate and efficient adjustments to the nozzle 510's position.

[0056] By using this precise adjustment method based on the real-time image of the camera 525, it can be ensured that the jet assembly 500 always blows the tobacco material in the best condition, which greatly improves the effect of this embodiment and provides cleaner and more uniform raw materials for subsequent tobacco processing steps, thus helping to improve the quality and efficiency of the entire tobacco production process.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tobacco leaf processing pre-treatment apparatus, characterized by, The utility model relates to a tobacco leaf processing device, which comprises: a base (100); a first conveying belt (200) and a second conveying belt (300) are arranged on the base (100) and are respectively connected with a first driving motor (110) on the base (100), the first conveying belt (200) and the second conveying belt (300) are used for conveying tobacco leaves to be processed; a screening assembly (400) is arranged on the base (100), the screening assembly (400) is located between the output end of the first conveying belt (200) and the input end of the second conveying belt (300), and the screening assembly (400) is used for screening impurities in the tobacco leaves conveyed from the first conveying belt (200) to the second conveying belt (300); two air jet assemblies (500) are arranged above the conveying surfaces of the first conveying belt (200) and the second conveying belt (300) respectively, and the air jet assemblies (500) are used for blowing and removing impurities on the tobacco leaves conveyed by the first conveying belt (200) and the second conveying belt (300).

2. The tobacco leaf processing pre-treatment apparatus according to claim 1, characterized in that, The first conveying belt (200) and the second conveying belt (300) are arranged in a vertical direction, the first driving motor (110) is connected with a transmission shaft of the first conveying belt (200), the transmission shafts of the first conveying belt (200) and the second conveying belt (300) are connected through a gear transmission, the conveying directions of the first conveying belt (200) and the second conveying belt (300) are opposite, and the output end of the first conveying belt (200) is located above the input end of the second conveying belt (300).

3. The tobacco leaf processing pre-treatment apparatus according to claim 2, wherein, The screening assembly (400) comprises a U-shaped guide plate (410), the guide plate (410) is arranged around the output end of the first conveying belt (200) and forms a guide channel (411) with the output end of the first conveying belt (200), one end of the guide channel (411) is open and communicates with the conveying surface of the first conveying belt (200), and the other end of the guide channel (411) is open and communicates with the conveying surface of the second conveying belt (300); the guide plate (410) is uniformly provided with screening holes (412).

4. The tobacco leaf processing pre-treatment apparatus according to claim 3, wherein, A discharge hopper (420) is arranged below the output end of the second conveying belt (300).

5. The tobacco processing pre-treatment apparatus of claim 4, wherein, The screening assembly (400) further comprises a vibrating frame (430), a transmission disc (440); the vibrating frame (430) is provided with a guide piece (431) which is telescopically horizontally arranged in a guide groove (120) on the base (100), and the vibrating frame (430) is fixedly connected with the material guide plate (410) and the discharge hopper (420) respectively; the transmission disc (440) is arranged on the base (100) and is in transmission cooperation with the transmission shaft of the first conveying belt (200) or the second conveying belt (300) through a bevel gear meshing mode, and the end surface of the transmission disc (440) is provided with a matching shaft (441) which is eccentrically arranged, the axis line of the matching shaft (441) is perpendicular to the guide direction of the guide groove (120), the vibrating frame (430) is provided with a long strip-shaped matching groove (432) corresponding to the matching shaft (441), and the matching shaft (441) is arranged in the matching groove (432); the transmission shaft of the first conveying belt (200) or the second conveying belt (300) drives the transmission disc (440) to rotate, so that the matching shaft (441) drives the vibrating frame (430) to reciprocatingly move along the guide direction of the guide groove (120), and then drives the material guide plate (410) and the discharge hopper (420) to reciprocatingly move relative to the first conveying belt (200) or the second conveying belt (300).

6. The tobacco processing pre-treatment apparatus of claim 4, wherein, Corresponding waste collecting hoppers (130) are arranged below the material guide plate (410) and the discharge hopper (420).

7. The tobacco processing pre-treatment apparatus of claim 1, wherein, The air jet assembly (500) comprises a spray head (510), a sliding seat (520) and a first lead screw (530), the spray head (510) is arranged on the sliding seat (520), the spray head (510) is arranged towards the conveying surface of the first conveying belt (200) or the second conveying belt (300), the sliding seat (520) is arranged on the baffle (210) on both sides of the conveying surface of the first conveying belt (200) or the second conveying belt (300), the first lead screw (530) is arranged on one of the baffles (210) of the first conveying belt (200) or the second conveying belt (300), the rotation shaft axis of the first lead screw (530) is parallel to the conveying direction of the first conveying belt (200) or the second conveying belt (300), the first lead screw (530) is arranged through the sliding seat (520) through a threaded cooperation mode, and the first lead screw (530) is in transmission cooperation with the second driving motor (211) on the baffle (210) of the first conveying belt (200) or the second conveying belt (300).

8. The tobacco leaf processing pre-treatment apparatus according to claim 7, wherein, The sliding seat (520) is provided with a guide rod (212) corresponding to the first lead screw (530) on the baffle (210) away from the other end of the first lead screw (530), the axis of the guide rod (212) is parallel to the axis of the first lead screw (530), and the guide rod (212) penetrates through the sliding seat (520).

9. The tobacco processing pre-treatment apparatus of claim 7, wherein, The sliding seat (520) is provided with a sliding groove (521), the sliding groove (521) is provided with a sliding block (522), the spray head (510) is arranged on the sliding block (522), the sliding seat (520) is further provided with a second lead screw (523), the axis of the second lead screw (523) is parallel to the sliding direction of the sliding block (522) in the sliding groove (521), the axis of the second lead screw (523) is perpendicular to the material conveying direction of the first conveying belt (200) or the second conveying belt (300), and the second lead screw (523) penetrates through the sliding block (522) in a threaded cooperation mode; the sliding seat (520) is further provided with a third driving motor (524) corresponding to the second lead screw (523), and the third driving motor (524) is in transmission connection with the second lead screw (523).

10. The tobacco processing pre-treatment apparatus of claim 9, wherein, The sliding block (522) is further provided with a camera (525), and the shooting direction of the camera (525) is the same as the direction of the spray head (510).

Images