Feeding elevator and tobacco primary processing equipment

Abstract

This application provides a feeding elevator and tobacco processing equipment, relating to the technical field of tobacco processing equipment. The feeding elevator includes a lifting belt assembly and a centering assembly. The lifting belt assembly includes a lifting belt; the centering assembly is used to blow air from both sides of the lifting belt towards the center, causing the material on the lifting belt to be in an agglomerated state. This application can improve the dispersion of material and the scattering of tobacco during the conveying process, saving material costs.

Description

Technical Field

[0001] This application relates to the field of tobacco processing equipment technology, and in particular to a feeding elevator and tobacco shredding equipment. Background Technology

[0002] The tobacco feeding elevator is a key piece of equipment connecting the conveyor of loose tobacco shreds to subsequent processing steps. It is mainly used to stably and evenly lift the tobacco shreds to a designated workstation. Therefore, the material lifting stage plays a crucial role in the tobacco processing process, directly affecting production efficiency and product quality. Traditional feeding elevator belts generally suffer from material dispersion problems; tobacco shreds easily scatter during the lifting process, leading to material loss and increased costs. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a feeding elevator and tobacco processing equipment to improve the material dispersion and tobacco shred scattering during the conveying process and save material costs.

[0004] This application provides the following technical solution:

[0005] In a first aspect, embodiments of this application provide a feeding elevator, the feeding elevator comprising:

[0006] A lifting belt assembly, the lifting belt assembly including a lifting belt;

[0007] A centering component is used to blow air from both sides of the lifting belt toward the center, so that the material on the lifting belt can be in an aggregated state.

[0008] In some embodiments of the first aspect, the centering component includes:

[0009] A plurality of first airflow nozzles are distributed on both sides of the lifting belt, and the first airflow nozzles on the same side are arranged sequentially along the extension direction of the lifting belt; wherein the spray direction of the first airflow nozzles is towards the middle of the lifting belt.

[0010] A first gas source component is connected to all the first gas flow nozzles to deliver a gaseous medium to the first gas flow nozzles.

[0011] In some embodiments of the first aspect, the lifting belt assembly further includes side baffles, with side baffles respectively provided on both sides of the lifting belt.

[0012] In some embodiments of the first aspect, the centering component further includes a bellows, with the bellows respectively disposed on both sides of the lifting belt, the bellows extending along the extension direction of the lifting belt, the bellows having an air inlet and a plurality of air outlets, the air inlet being connected to the first air source component, and the plurality of air outlets being evenly distributed on the side of the bellows near the lifting belt.

[0013] In some embodiments of the first aspect, the lifting belt has a plurality of partitions located on the conveying surface of the lifting belt, and all the partitions are spaced apart along the extension direction of the lifting belt.

[0014] In some embodiments of the first aspect, the surface of the partition is provided with anti-slip texture.

[0015] In some embodiments of the first aspect, the feeding elevator further includes:

[0016] An antistatic component is used to blow positive and negative ion air vertically onto the conveying surface of the lifting belt.

[0017] In some embodiments of the first aspect, the static eliminator includes:

[0018] Multiple second airflow nozzles are distributed above the lifting belt, and the spray direction of the second airflow nozzles is perpendicular to the conveying surface of the lifting belt;

[0019] The second air source component is connected to all the second airflow nozzles to deliver positive and negative ion air to the second airflow nozzles.

[0020] In some embodiments of the first aspect, the feeding elevator further includes:

[0021] The offset detection module includes a pair of optical detection unit arrays symmetrically arranged on both sides of the lifting belt. The optical detection unit arrays consist of multiple optical detection units spaced apart along the material conveying direction. Each optical detection unit includes a light signal emitting part and a light signal receiving part. The light signal receiving part is configured to generate a detection signal in response to the light signal emitted by the light signal emitting part being blocked. The lifting belt is configured as a light-transmitting structure.

[0022] Secondly, embodiments of this application also provide a tobacco processing device, which includes a feeding elevator as described in any of the above embodiments.

[0023] The embodiments of this application have the following advantages:

[0024] This application provides a feeding elevator that optimizes the tobacco conveying process through the synergistic action of an elevator belt assembly and a centering assembly. The elevator belt operates continuously, lifting loose tobacco from a lower position to a designated height for subsequent processing. The centering assembly blows air directionally from both sides of the elevator belt towards the center, creating symmetrical airflow pressure. The airflow force compels the dispersed tobacco to converge towards the center of the elevator belt, preventing it from spreading to the edges due to vibration or inertia. By adjusting the airflow intensity and direction, different conveying speeds and tobacco densities can be accommodated, ensuring the material remains concentrated until it is smoothly conveyed to the next station.

[0025] Therefore, airflow centering technology effectively suppresses the dispersion of tobacco shreds towards the edge of the conveyor belt, significantly reducing material loss during transport and saving production costs. The more uniform distribution of the aggregated tobacco shreds facilitates stable processing in subsequent steps (such as quantitative cutting and drying), improving product quality consistency. It requires no complex mechanical structures, achieving material aggregation solely through airflow control, resulting in low maintenance costs and high adaptability.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, 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 this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This illustration shows a structural schematic diagram from one perspective of a feeding elevator provided in an embodiment of this application;

[0029] Figure 2 This illustration shows a structural schematic diagram from another perspective of a feeding elevator provided in an embodiment of this application;

[0030] Figure 3 It shows Figure 2 A schematic diagram of the partial structure at point A in the diagram.

[0031] Explanation of key component symbols:

[0032] 1-Lifting belt assembly; 2-Lifting belt; 3-Blowbox; 4-Support frame; 5-First air source component; 6-Baffle; 7-Side baffle; 8-Second air source component; 9-Second airflow nozzle. Detailed Implementation

[0033] The embodiments of this application 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 this application, and should not be construed as limiting this application.

[0034] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] In this application, unless otherwise expressly 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 application according to the specific circumstances.

[0036] 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 application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] In related technologies, the tobacco feeding elevator 2 is a key piece of equipment connecting the conveying of loose tobacco shreds with subsequent processing steps. It is mainly used to stably and evenly lift the tobacco shreds to a designated workstation. Therefore, the material lifting process plays a crucial role in tobacco processing, directly affecting production efficiency and product quality. Traditional feeding elevator belts generally suffer from material dispersion problems; tobacco shreds easily scatter during the lifting process, leading to material loss and increased costs.

[0039] As shown in Figure 1, Figure 2 and Figure 3 As shown, in order to solve the above-mentioned technical problems, this application provides a feeding elevator, which includes a lifting belt assembly 1 and a centering assembly. The lifting belt assembly 1 includes a lifting belt 2. The centering assembly is used to blow air from both sides of the lifting belt 2 towards the center, so that the material on the lifting belt 2 can be in an agglomerated state.

[0040] In these embodiments, a feeding elevator is provided for stably and uniformly lifting loose tobacco shreds from a low position to a high position in a tobacco processing production line. This feeding elevator aims to solve the problem of increased material spillage and loss caused by the dispersion of tobacco shreds during the conveying process of a traditional conveyor belt 2.

[0041] The lifting belt assembly 1 is used to carry and transport tobacco shreds. In this embodiment, the lifting belt assembly 1 includes an annular lifting belt 2, a driving wheel, a driven wheel, and a support frame 4. The lifting belt 2 is fitted onto the driving wheel and the driven wheel, and is driven by a drive device (such as a motor, not shown in the figure) to rotate the driving wheel, thereby driving the lifting belt 2 to circulate and continuously lift the tobacco shreds. The surface of the lifting belt 2 may be provided with anti-slip textures or shallow grooves as needed to facilitate the gripping of tobacco shreds. The width and operating speed of the lifting belt 2 can be designed according to the actual needs of the production line.

[0042] The centering assembly is used to center the tobacco on the lifting belt 2, preventing it from scattering to both sides. The centering assembly is located on both sides of at least one working section of the lifting belt 2, specifically in the rising section where the tobacco is lifted. The centering assembly includes an air source (such as an air compressor, not shown in the figure), a gas delivery pipe, and at least one pair of air inlets.

[0043] Air outlets are mounted on fixed supports on both sides of the lifting belt 2, with their air outlet direction facing the central area of ​​the lifting belt 2. Preferably, multiple pairs of air outlets are spaced apart along the length of the lifting belt 2 (i.e., the tobacco conveying direction) to form a continuous or intermittent airflow barrier. In this embodiment, three air outlets are provided on each side, evenly distributed in the upper middle area of ​​the working section of the lifting belt 2.

[0044] The air source is connected to the air inlet via a gas delivery pipe, providing compressed air. The airflow is ejected through the air inlet, forming an airflow that blows from both sides of the lifting belt 2 towards its center. The force of this airflow pushes the tobacco shreds located at the edges of the lifting belt 2 towards the center, ensuring that the tobacco shreds remain in the central area of ​​the lifting belt 2 throughout the lifting process, forming a relatively compact and concentrated material belt. By adjusting the pressure of the air source and / or the opening of the air inlet, the intensity of the airflow can be controlled to adapt to tobacco shreds of different flow rates, humidity levels, or densities, ensuring optimal centering while preventing excessively strong airflow from blowing the tobacco shreds away from the lifting belt 2.

[0045] Working Principle: The tobacco is fed into the lower end of the lifting belt 2 and moves upwards with it. When the tobacco enters the working section equipped with a centering component, the airflow from the air outlets on both sides acts on the tobacco, pushing the tobacco moving towards the edge of the lifting belt 2 back to the center area. In this way, the tobacco remains concentrated throughout the lifting process, effectively reducing the amount of tobacco scattering from the sides of the lifting belt 2 due to vibration or airflow disturbance, thereby reducing material loss and improving production efficiency and product quality.

[0046] The feeding elevator provided in this embodiment significantly improves the problems of material dispersion and tobacco scattering during the conveying process by setting centering components on both sides of the elevator belt 2 and using airflow to gather the tobacco towards the center. This structure is simple, reliable, easy to implement and maintain, and can be adapted to different working conditions by adjusting the airflow parameters, demonstrating good practicality and economic benefits.

[0047] In other embodiments, the number, position, and angle of the air inlets of the centering component can be adjusted according to actual needs. For example, air inlets can be provided only at the beginning of the lifting section of the lifting belt 2, or the air inlets can be configured with an adjustable angle. Other types of gas can also be used as the air source, as long as they can generate sufficient thrust and do not contaminate the tobacco. In addition, the material, width, and driving method of the lifting belt 2 can also be selected according to the specific application.

[0048] In some embodiments, the centering component includes a plurality of first airflow nozzles and a first air source component 5. The plurality of first airflow nozzles are distributed on both sides of the lifting belt 2, and the first airflow nozzles on the same side are arranged sequentially along the extension direction of the lifting belt 2; wherein the spray direction of the first airflow nozzles is towards the center of the lifting belt 2. The first air source component 5 is connected to all the first airflow nozzles to deliver a gaseous medium to the first airflow nozzles.

[0049] In these embodiments, three first airflow nozzles are sequentially arranged on the left side of the lifting belt 2 along its extension direction (i.e., the tobacco conveying direction); three first airflow nozzles are also sequentially arranged on the right side of the lifting belt 2 along its extension direction. These first airflow nozzles are mounted on the support structures on both sides of the lifting belt 2 by fixed brackets. The spray direction of each first airflow nozzle is precisely adjusted towards the central region of the lifting belt 2. Optionally, its spray direction forms an acute angle (e.g., 30° to 60°) with the surface of the lifting belt 2, so that the sprayed airflow can more effectively sweep across the surface of the lifting belt 2, pushing the tobacco at the edge towards the center, while reducing the risk of blowing the tobacco directly upward. The distribution of multiple nozzles along the conveying direction can form a continuous airflow barrier, ensuring that the tobacco is effectively centered throughout the entire critical lifting section.

[0050] The first air source component 5 is an air compressor, which is connected to a distribution valve box via a main pipeline. The distribution valve box is then connected to all six first airflow nozzles via multiple branch pipelines. The first air source component 5 is responsible for providing compressed air as the gas medium. By adjusting the output pressure of the first air source component 5 (e.g., within a range of 0.2 MPa to 0.6 MPa), the gas pressure delivered to each first airflow nozzle can be controlled, thereby adjusting the nozzle's spray intensity. An independent regulating valve (not shown in the figure) can also be installed in the distribution valve box to fine-tune the flow rate of each nozzle, achieving more precise alignment control.

[0051] Working Principle: Tobacco is fed into the lower end of the lifting belt 2 and moves upward with it. When the tobacco enters the rising section equipped with the centering component, the first air source component 5 is activated, and compressed air is delivered to each first airflow nozzle via the main pipe, the diversion valve box, and the branch pipes. The airflow ejected from the first airflow nozzles on both sides of the lifting belt 2 is directed towards the center of the lifting belt 2, forming two opposing airflow walls. These two airflows act on the tobacco, pushing any tobacco particles attempting to move towards the left or right edge of the lifting belt 2 back to the central area. Because multiple nozzles are distributed along the conveying direction, this centering action is continuous, ensuring that the tobacco remains tightly packed throughout the lifting process, effectively preventing scattering.

[0052] Alternative Implementation: In other implementations, the number of first airflow nozzles on the same side can be two, four, or more, depending on the length of the lifting belt 2 and the alignment requirements. The injection angle of the first airflow nozzles can be adjusted based on experimental optimization. The first air source 5 can be an air tank or other device capable of providing a stable airflow. Besides compressed air, the gas medium can also be a filtered, clean nitrogen or other inert gas. The diversion valve box can be replaced by multiple independent solenoid valves to achieve independent and precise control of each nozzle. The material, width, and drive method of the lifting belt 2 can also be selected according to the specific application.

[0053] In some embodiments, the lifting belt assembly 1 further includes side baffles 7, and side baffles 7 are respectively provided on both sides of the lifting belt 2.

[0054] In these embodiments, the side baffle 7 is a continuous flexible baffle with a certain height (e.g., 50mm-100mm), whose lower edge maintains a small gap (e.g., 1-3mm) or slight contact with the upper surface of the lifting belt 2. The side baffle 7 is preferably made of wear-resistant rubber or polyurethane. The side baffle 7 extends along the entire working section (especially the ascending section) of the lifting belt 2. Its main function is to act as a physical barrier to prevent tobacco from falling directly from the side edges of the lifting belt 2, providing basic protection for the airflow action of the centering component and preventing a large amount of tobacco from scattering before being centered by the airflow.

[0055] In other embodiments, the height, material (e.g., rigid plastic, thin metal sheet with flexible strip), and installation method (removable, height adjustable) of the side baffle 7 can be adjusted as needed.

[0056] In some embodiments, the centering component also includes a bellows 3. Bellows 3 are respectively provided on both sides of the lifting belt 2. The bellows 3 extend along the extension direction of the lifting belt 2. The bellows 3 has an air inlet and multiple air outlets. The air inlet is connected to the first air source component 5. The multiple air outlets are evenly distributed on the side of the bellows 3 near the lifting belt 2.

[0057] In these embodiments, in addition to a plurality of first airflow nozzles and a first air source 5, the centering assembly also includes a bellows 3 to optimize airflow distribution and management.

[0058] The bellows 3 are disposed on both sides of the lifting belt 2, extending along the extension direction of the lifting belt 2. Each bellows 3 has one air inlet and multiple air outlets. The air inlet is connected to the first air source component 5 through a pipe to ensure a stable airflow supply. The multiple air outlets are evenly distributed on the side of the bellows 3 closest to the lifting belt 2, so that the airflow can act evenly on the tobacco on the lifting belt 2. Preferably, the air outlets can be in the form of a narrow slit or densely packed small holes to ensure a wide and uniform airflow coverage.

[0059] In some embodiments, the first airflow nozzle can be integrated into the design of the bellows 3 as part of the air outlet, or it can be set independently to provide more precise local airflow control. In this embodiment, the bellows 3 itself functions to generate a continuous airflow wall, reducing the need for a separate first airflow nozzle.

[0060] The first air source component 5 is an air compressor or other equipment that can provide a stable airflow. It is connected to the distribution valve box through the main pipeline, and then connected to the air inlet of all the air boxes 3 through branch pipelines to provide the required compressed air.

[0061] Working Principle: Tobacco is fed into the lower end of the lifting belt 2. As the lifting belt 2 moves upward, the tobacco enters the ascending section equipped with side baffles 7 and a centering assembly. First, the side baffles 7 act as a physical barrier, preventing most of the tobacco from sliding directly off the edges of the lifting belt 2. Simultaneously, the centering assembly is activated, and compressed air generated by the air compressor is delivered to the air inlet of the air box 3 through the main pipe, the diversion valve box, and the branch pipes. Then, the airflow is evenly blown onto the tobacco on the lifting belt 2 through multiple air outlets on the air box 3, forming a continuous airflow barrier that pushes any tobacco attempting to move towards the edge of the lifting belt 2 back to the central area, ensuring that the tobacco remains tightly packed throughout the lifting process.

[0062] In some embodiments, the lifting belt 2 has a plurality of partitions 6 located on the conveying surface of the lifting belt 2, and all partitions 6 are spaced apart along the extension direction of the lifting belt 2.

[0063] In these embodiments, multiple baffles 6 are located on the conveying surface of the lifting belt 2, i.e., the upper surface carrying the tobacco. All baffles 6 are spaced apart along the extension direction of the lifting belt 2 (i.e., the tobacco conveying direction). In this embodiment, the baffles 6 are vertical plate-like structures with a certain height (e.g., 30mm-80mm), and their material can be the same as or different from the lifting belt 2, such as wear-resistant rubber, plastic, or metal. The baffles 6 are fixed by means of bonding, bolting, or integral molding with the lifting belt 2. The spacing between two adjacent baffles 6 (i.e., the spacing between baffles 6) is designed according to the tobacco flow rate and lifting height, for example, a spacing of 200mm. The main function of the baffles 6 is to divide the conveying surface of the lifting belt 2 into multiple independent hopper areas. During the lifting process, especially when the lifting angle is large, the baffles 6 can effectively prevent the tobacco from sliding downwards (backslipping) due to gravity, ensuring that the tobacco is stably "scooped up" and lifted to a high position. At the same time, it also helps to maintain the initial separation of the tobacco in the lateral direction, providing a more stable material base for the subsequent centering component operation.

[0064] In other embodiments, the height, thickness, material, shape (e.g., straight plate, curved plate) and spacing of the partition 6 can be optimized and adjusted according to the characteristics of the tobacco (e.g., density, humidity, flow rate) and the lifting angle.

[0065] In some embodiments, the surface of the partition 6 is provided with anti-slip texture.

[0066] In these embodiments, the inner surface of the partition 6 facing the tobacco is provided with anti-slip texture. The anti-slip texture can be regular raised or recessed stripes, a grid pattern, dot-matrix protrusions, or an irregular rough surface. The anti-slip texture can be prepared by molding, machining (such as milling or sandblasting), or surface coating. Its main function is to increase the friction between the surface of the partition 6 and the tobacco. When the lifting belt 2 lifts the tobacco at a large angle, the friction between the tobacco and the contact surface of the partition 6 increases, which can more effectively prevent the tobacco from sliding on the surface of the partition 6 or from insufficient "climbing," ensuring that the tobacco is firmly "scooped up" and rises steadily with the lifting belt 2, further strengthening the effect of the partition 6 in preventing material slippage.

[0067] In some embodiments, the feeding elevator also includes an antistatic component for blowing positive and negative ion air vertically toward the conveying surface of the lifting belt 2.

[0068] In these embodiments, the static eliminator includes:

[0069] Ionizer: Installed on one or both sides of the conveyor belt 2, close to the conveyor surface. The ionizer generates positive and negative ion airflow to neutralize the electrostatic charge on the conveyor belt 2 and the surface of the tobacco. The ionizer can be a standalone device or integrated into the existing gas supply system.

[0070] Air duct: Connects the ion generator and the air outlet, and is used to guide the ion air vertically downwards towards the conveyor surface of the elevator belt 2. The design of the air duct takes into account the directionality of the airflow and the coverage area to ensure that the ion air can effectively act on the entire working area of ​​the elevator belt 2.

[0071] Air outlet: Located above the lifting belt 2, perpendicular to the conveying surface of the lifting belt 2. The number and position of the air outlet can be adjusted according to the actual size of the lifting belt 2 and the working requirements. Preferably, the air outlet can be in the form of a narrow slit to ensure uniform distribution of ion air.

[0072] It should be noted that the airflow velocity generated when the ion generator is working is low (≤1.5 m / s), which is far below the critical wind speed for suspending tobacco shreds (generally ≥5 m / s), so it will not blow away or suspend the tobacco shreds.

[0073] In some embodiments, the static eliminator includes a plurality of second airflow nozzles 9 and a second air source component 8. The plurality of second airflow nozzles 9 are distributed above the lifting belt 2, and the jetting direction of the second airflow nozzles 9 is perpendicular to the conveying surface of the lifting belt 2. The second air source component 8 is connected to all the second airflow nozzles 9 to deliver positive and negative ion air to the second airflow nozzles 9.

[0074] In these embodiments, the static eliminator assembly includes:

[0075] Multiple second airflow nozzles 9 are distributed above the lifting belt 2 and arranged along its extension direction. The jet direction of each second airflow nozzle 9 is perpendicular to the conveying surface of the lifting belt 2, ensuring that the ionizing air can directly act on the tobacco and the surface of the lifting belt 2. Optionally, the second airflow nozzles 9 can be in the form of elongated slits or densely packed small holes to ensure a wide and uniform ionizing air coverage. In this embodiment, four second airflow nozzles 9 are provided on each side, and the spacing can be adjusted according to actual needs.

[0076] The second air source component 8 is an ion generator installed on one or both sides of the lifting belt 2, close to the conveying surface. The second air source component 8 generates positive and negative ion air to neutralize the electrostatic charge on the lifting belt 2 and the surface of the tobacco. The second air source component 8 is connected to the diversion valve box via a main pipe, and then connected to all the second airflow nozzles 9 via branch pipes to provide the required positive and negative ion air. The concentration and coverage effect of the ion air can be controlled by adjusting the output intensity of the second air source component 8.

[0077] In some embodiments, the feeding elevator further includes an offset detection module, which includes a pair of optical detection unit arrays symmetrically arranged on both sides of the lifting belt 2. The optical detection unit array consists of multiple optical detection units arranged at intervals along the material conveying direction. Each optical detection unit includes a light signal emitting part and a light signal receiving part. The light signal receiving part is configured to generate a detection signal in response to the light signal emitted by the light signal emitting part being blocked. The lifting belt 2 is configured as a light-transmitting structure.

[0078] In these embodiments, the offset detection module includes:

[0079] A pair of optical detection unit arrays: A pair of optical detection unit arrays are symmetrically arranged on both sides of the light-transmitting lifting belt 2. In this embodiment, the left optical detection unit array is mounted on the left fixed bracket of the lifting belt 2, and the right optical detection unit array is mounted on the right fixed bracket.

[0080] Multiple optical detection units: Each optical detection unit array consists of multiple optical detection units arranged at intervals along the material conveying direction (i.e., the extension direction of the lifting belt 2). In this embodiment, each array contains five optical detection units, evenly distributed along the length of the critical working section of the lifting belt 2.

[0081] Optical signal emitting unit and optical signal receiving unit: Each optical detection unit includes an optical signal emitting unit (such as an infrared LED) and an optical signal receiving unit (such as a photodiode or phototransistor). During installation, the optical signal emitting units of the left array are positioned opposite the optical signal receiving units of the right array, or vice versa. The optical signal receiving unit is configured to generate a detection signal (such as a level change signal) in response to the optical signal emitted by the optical signal emitting unit being blocked by tobacco on the lifting belt 2.

[0082] Working Principle: When there is no tobacco on either side of the lifting belt 2 near the optical signal emitting unit, the light beam emitted by the optical signal emitting unit can pass smoothly through the light-transmitting lifting belt 2 and be received by the optical signal receiving unit on the opposite side. The receiving unit outputs a status signal (such as a high level). When tobacco passes through the beam path, it will block part or all of the beam, causing the light intensity received by the optical signal receiving unit to weaken or disappear, thereby outputting another status signal (such as a low level), i.e., generating a "detection signal". By analyzing the intensity, width, and timing of the detection signals from the arrays on both sides, the lateral position (whether it is centered), width, and whether there is a left or right offset of the tobacco on the lifting belt 2 can be accurately determined. This information can be transmitted to the control system for dynamically adjusting the airflow intensity or mode of the centering component (such as the bellows 3) to achieve closed-loop intelligent control.

[0083] Beneficial effects: The feeding elevator provided in this embodiment achieves real-time, non-contact monitoring of material position by adding an offset detection module. Combined with the light-transmitting lifting belt 2 and the symmetrically arranged optical detection unit array, the detection accuracy is high and the response speed is fast. This module can form a closed-loop control system with the centering component, significantly improving the intelligence level and response efficiency of the centering adjustment.

[0084] It should be noted that when the tobacco shreds deviate during the conveying process, the edge of the tobacco shreds will block the light beam at the corresponding position. The sensor detects the on / off state of the light beam in real time and transmits the signal to the control system of the feeder. The system analyzes the position and number of the blocked sensors to accurately determine the direction and degree of tobacco shreds deviation (such as the left / right deviation ≥ the set threshold of 10mm). Then, it triggers the first airflow nozzle on the corresponding side to perform pulse blowing, using directional airflow to gently push the deviated tobacco shreds back to the center position.

[0085] It can be noted that the pulsed control (intermittent injection) of the first airflow nozzle has several significant advantages over continuous injection. First, it only activates when tobacco deviation is detected. Pulse control can significantly reduce compressed air consumption, achieving energy savings of 50%-70% and effectively reducing operating costs. Second, the pulsed injection, in conjunction with an infrared through-beam or reflective photoelectric sensor, enables dynamic and precise control of tobacco deviation: when the material edge deviation exceeds a set threshold, a high-frequency, short-duration airflow is immediately triggered, quickly correcting the deviation while avoiding material oscillation or overcorrection problems caused by continuous airflow.

[0086] Because the first airflow nozzle and the second airflow nozzle 9 use low-pressure airflow, the tobacco will not float. For example, the airflow is ejected directionally at a low speed (≤1.5 m / s).

[0087] In some embodiments, this application also provides a tobacco processing device, which includes any of the feeding elevators described in the above embodiments.

[0088] Since the aforementioned feeding elevator has the above-mentioned technical effects, tobacco processing equipment including the feeding elevator should have the same technical effects, which will not be elaborated here.

[0089] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0090] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A feeding elevator, characterized in that, The feeding elevator includes: A lifting belt assembly, the lifting belt assembly including a lifting belt; A centering component is used to blow air from both sides of the lifting belt toward the center, so that the material on the lifting belt can be in an aggregated state.

2. The feeding elevator according to claim 1, characterized in that, The centering components include: A plurality of first airflow nozzles are distributed on both sides of the lifting belt, and the first airflow nozzles on the same side are arranged sequentially along the extension direction of the lifting belt; wherein the spray direction of the first airflow nozzles is towards the middle of the lifting belt. A first gas source component is connected to all the first gas flow nozzles to deliver a gaseous medium to the first gas flow nozzles.

3. The feeding elevator according to claim 2, characterized in that, The lifting belt assembly also includes side baffles, with side baffles respectively provided on both sides of the lifting belt.

4. The feeding elevator according to claim 2, characterized in that, The centering component also includes a bellows, which are respectively provided on both sides of the lifting belt. The bellows extend along the extension direction of the lifting belt. The bellows have an air inlet and multiple air outlets. The air inlet is connected to the first air source component. The multiple air outlets are evenly distributed on the side of the bellows near the lifting belt.

5. The feeding elevator according to claim 1, characterized in that, The lifting belt has multiple partitions located on the conveying surface of the lifting belt, and all partitions are spaced apart along the extension direction of the lifting belt.

6. The feeding elevator according to claim 5, characterized in that, The surface of the partition is provided with anti-slip texture.

7. The feeding elevator according to claim 1, characterized in that, The feeding elevator also includes: An antistatic component is used to blow positive and negative ion air vertically onto the conveying surface of the lifting belt.

8. The feeding elevator according to claim 7, characterized in that, The static eliminator assembly includes: Multiple second airflow nozzles are distributed above the lifting belt, and the spray direction of the second airflow nozzles is perpendicular to the conveying surface of the lifting belt; The second air source component is connected to all the second airflow nozzles to deliver positive and negative ion air to the second airflow nozzles.

9. The feeding elevator according to claim 1, characterized in that, The feeding elevator also includes: The offset detection module includes a pair of optical detection unit arrays symmetrically arranged on both sides of the lifting belt. The optical detection unit arrays are composed of multiple optical detection units arranged at intervals along the material conveying direction. Each optical detection unit includes a light signal emitting part and a light signal receiving part. The light signal receiving part is configured to generate a detection signal in response to the light signal emitted by the light signal emitting part being blocked.

10. A tobacco processing device, characterized in that, The tobacco processing equipment includes the feeding elevator as described in any one of claims 1 to 9.

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