Material centering device and belt conveyor
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA TOBACCO GUANGXI IND
- Filing Date
- 2025-08-22
- Publication Date
- 2026-06-19
Smart Images
Figure CN224376861U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tobacco processing technology, and in particular to a material centering device and a belt conveyor. Background Technology
[0002] A belt conveyor is a friction-driven continuous material transport machine. A motor drives a drum, which in turn rotates a circular conveyor belt. Belt conveyors offer numerous advantages, including high conveying capacity, long conveying distance, simple structure, ease of maintenance, convenient programmed control, and automated operation. They also operate at high speeds, smoothly, and with low noise. In the tobacco processing industry, belt conveyors can connect key process steps, enabling efficient transfer of tobacco leaves and shredded tobacco between different stages.
[0003] In tobacco production, belt conveyors, as core material transfer equipment, are often used in conjunction with machines such as shredders and dryers. However, at the discharge port of the equipment connection, due to a height difference of 0.4-1.5 meters in the process layout, when tobacco shreds and leaves fall at high speed, they will experience severe impact and friction with the downstream equipment's receiving surface, causing fine particles to escape and form dust pollution. At the same time, the collision between materials increases the breakage rate of tobacco leaves. In addition, the free fall motion causes the material to be distributed in a scattered manner, and some tobacco fragments can easily become embedded in the gaps of the conveyor belt's edge, causing jamming and affecting the cleanliness of the workshop and the stability of product quality. Utility Model Content
[0004] This application provides a material centering device and a belt conveyor to solve the problems of dust and material non-concentration during the material unloading process.
[0005] This application provides a material centering device applied at the discharge hood of a belt conveyor. The material centering device is configured with a material discharge direction and includes:
[0006] The main structure, one end of which is connected to the discharge hood of the upstream material conveying device;
[0007] The flow guiding mechanism is equipped with a first end and a second end arranged along the material dropping direction. The first end is connected to the main structure, and the second end is in close contact with the conveyor belt of the downstream conveying device. The opening area of the second end is smaller than the opening area of the first end.
[0008] In some possible implementations, the flow guiding mechanism includes a flow guide plate and a baffle, one end of the flow guide plate is connected to the main structure, and two flow guide plates are arranged at intervals opposite each other, with the two flow guide plates gradually tilting towards each other from the end closer to the main structure to the end farther away from the main structure;
[0009] Each of the guide plates is provided with a baffle at the end away from the main structure, and the baffle is in close contact with the conveyor belt.
[0010] In some possible implementations, the tilt angle of the deflector can be adjusted.
[0011] In some possible implementations, the flow guiding mechanism further includes a shaping plate, one end of which is connected to the end of the flow guiding plate away from the main structure, and a retaining edge is connected to the end of the shaping plate away from the flow guiding plate, with the end of the retaining edge away from the shaping plate abutting against the conveyor belt.
[0012] In some possible implementations, the shaping plate is parallel to the material dropping direction.
[0013] In some possible implementations, the material centering device further includes two opening structures arranged sequentially along the conveying direction of the conveyor belt. Each opening structure is equipped with a sealing curtain. The end of the sealing curtain away from the conveyor belt is connected to the main structure, and the end of the sealing curtain facing the conveyor belt is configured as a movable end.
[0014] In some possible implementations, the material centering device further includes a pressure strip connected to the main structure, and the end of the sealing curtain near the main structure is pressed between the main structure and the pressure strip.
[0015] In some possible implementations, the sealing curtain includes a plurality of parallel curtain strips, the ends of which are fixed toward the main structure and the ends of which are movably arranged toward the conveyor belt.
[0016] In some possible implementations, a dustproof and pressure-relief net is installed at one end of the main structure facing the discharge hood, and the dustproof and pressure-relief net is offset from the discharge hood.
[0017] In addition, this application also provides a belt conveyor, including an upstream conveying device, a downstream conveying device, and the material centering device provided in the above embodiments. The main structure is connected to the discharge hood of the upstream conveying device, and the second end of the guiding mechanism is in close contact with the conveying belt of the downstream conveying device.
[0018] The beneficial effects of this application are as follows: The material centering device provided in this application is equipped with a flow guiding mechanism. The opening area of the second end of the flow guiding mechanism is smaller than that of the first end. When the material moves from the first end to the second end of the flow guiding mechanism, the flow guiding mechanism can guide the material and concentrate it at the center of the flow guiding mechanism. On the one hand, it can reduce the dispersion of fine particles and the formation of dust pollution, and reduce the problem of increased tobacco leaf breakage caused by collisions between materials. On the other hand, it can prevent the material from scattering and not concentrating, reduce the probability of broken tobacco dust embedding into the gaps of the conveyor belt and causing jamming, and reduce the impact on workshop cleanliness and product quality stability. Attached Figure Description
[0019] 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.
[0020] Figure 1 A partial side view of the belt conveyor is shown in some embodiments;
[0021] Figure 2 A partial cross-sectional structural schematic diagram of the belt conveyor in some embodiments is shown;
[0022] Figure 3 A top view of the material centering device in some embodiments is shown.
[0023] Explanation of key component symbols:
[0024] 1000 - Material centering device;
[0025] 100 - Main structure; 101 - Input port;
[0026] 200 - Flow guiding mechanism; 201 - First end; 202 - Second end; 210 - Flow guide plate; 220 - Shaping plate; 230 - Edge retainer;
[0027] 310 - Sealed curtain; 311 - Curtain strip; 320 - Pressure strip;
[0028] 400-Dustproof and pressure-relief net;
[0029] 500-Open structure;
[0030] 2000 - Upstream conveying device; 2100 - Discharge hood; 3000 - Downstream conveying device; 3100 - Conveyor belt;
[0031] M - Material dropping direction. Detailed Implementation
[0032] 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.
[0033] In the description of this application, 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", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0034] 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.
[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] In this application, unless otherwise expressly 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," "on top of," and "over" 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.
[0037] like Figure 1 and Figure 2 As shown, the embodiment provides a material centering device 1000, which can be applied in a belt conveyor to realize material conveying between the upstream conveying device 2000 and the downstream conveying device 3000.
[0038] In some embodiments, the material centering device 1000 is configured with a discharge direction M, wherein the discharge direction M may be parallel to the direction of gravity. The material centering device 1000 includes a main structure 100 and a flow guiding mechanism 200. One end of the main structure 100 may be connected to the discharge hood 2100 of the upstream conveying device 2000 to receive materials.
[0039] In some embodiments, the flow guiding mechanism 200 is configured with a first end 201 and a second end 202 disposed along the material discharge direction M. The first end 201 is connected to the main structure 100, and the second end 202 is in contact with the conveyor belt 3100 of the downstream conveying device 3000. Furthermore, the opening area of the second end 202 is smaller than the opening area of the first end 201. Accordingly, the flow guiding mechanism 200 as a whole can have a funnel-shaped structure.
[0040] During operation, the material output from the upstream conveying device 2000 enters the main structure 100 through the discharge hood 2100 and then flows into the guiding mechanism 200. The opening area of the second end 202 of the guiding mechanism 200 is smaller than that of the first end 201. When the material moves from the first end 201 to the second end 202 of the guiding mechanism 200, it is guided by the guiding mechanism 200 and concentrated at the center of the guiding mechanism 200. This reduces dust pollution caused by the escape of fine particles and decreases the rate of tobacco leaf breakage due to material collisions. Furthermore, it prevents the material from scattering and becoming concentrated, reducing the probability of tobacco dust embedding in the gaps of the conveyor belt 3100 and causing jamming, and also minimizes the impact on workshop cleanliness and product quality stability.
[0041] like Figures 1 to 3 As shown, in some embodiments, one end of the main structure 100 may have an input port 101, and one end of the output port of the discharge hood 2100 may be connected to the input port 101 of the main structure 100, thereby communicating with the interior of the main structure 100. The main structure 100 may be fixedly connected to the discharge hood 2100 by means of bolt connection, snap-fit or welding.
[0042] In some embodiments, the flow guiding mechanism 200 includes a flow guide plate 210 and a sidewall 230. One end of the flow guide plate 210 is detachably connected to the main structure 100 via bolts or other means. The other end of the flow guide plate 210 extends towards the downstream conveyor belt 3100. In some embodiments, two flow guide plates 210 may be configured, positioned on opposite sides of the main structure 100 and spaced apart. Material can pass between the two flow guide plates 210.
[0043] In some embodiments, the guide vanes 210 may be inclined relative to the material discharge direction M. Specifically, the two guide vanes 210 gradually tilt towards each other from the end closer to the main structure 100 to the end farther from the main structure 100. This allows the guiding mechanism 200 to have an overall funnel-shaped structure, achieving material guidance and convergence. Furthermore, the guide vanes 210 may be detachably mounted relative to the main structure 100, and the tilt angle of the guide vanes 210 relative to the material discharge direction M can be adjusted as needed to meet different equipment layouts or process requirements.
[0044] In some embodiments, each guide plate 210 has a baffle 230 at the end furthest from the main structure 100, and the end of the baffle 230 furthest from the guide plate 210 can abut against the downstream conveyor belt 3100. Thus, the baffle 230 can block the gap between the guide mechanism 200 and the conveyor belt 3100, preventing leakage of fine materials. In some embodiments, the baffle 230 can be made of wear-resistant plastic or canvas. Accordingly, the baffle 230 can have a certain degree of flexibility, allowing it to fit tightly against the downstream conveyor belt 3100, reducing the possibility of fine material escaping.
[0045] like Figure 2 As shown, in some embodiments, a shaping plate 220 is also connected between the guide plate 210 and the baffle 230. One end of the shaping plate 220 can be fixedly connected to the end of the guide plate 210 near the baffle 230 by means of bolts or the like. One end of the baffle 230 can be fixedly connected to the end of the shaping plate 220 away from the guide plate 210. In some embodiments, a pressure plate can be fitted to the side of the baffle 230 away from the shaping plate 220. The pressure plate can be fixedly connected to the shaping plate 220 by means of bolts or the like. The baffle 230 can press against the pressure plate and the shaping plate 220, so that the baffle 230 can be clamped and fixed by the cooperation of the pressure plate and the shaping plate 220. It can be understood that two shaping plates 220 can also be configured with a gap between them, and material can pass between the two shaping plates 220. In the embodiments, the distance between the two shaping plates 220 can be adaptively adjusted according to the change of the tilt angle of the guide plate 210.
[0046] In some embodiments, the shaping plate 220 may be parallel to the material dropping direction M, that is, the shaping plate 220 may be perpendicular to the downstream conveyor belt 3100. When the material enters the shaping plate 220 stage from the guide plate 210 stage, the material dropping area can be kept consistent, the dropping area can be shaped, and the dropping at each position can be more uniform.
[0047] like Figure 1 and Figure 2 As shown, in one embodiment, the material centering device 1000 further includes two opening structures 500 arranged sequentially along the conveying direction of the conveyor belt 3100. Each opening structure 500 is equipped with a sealing curtain 310. The end of the sealing curtain 310 away from the conveyor belt 3100 is connected to the main structure 100, and the end of the sealing curtain 310 facing the conveyor belt 3100 is configured as a movable end, which can move within a certain range.
[0048] In some embodiments, one end of the sealed curtain 310 facing the main structure 100 can be fixedly connected to the main structure 100 via a pressure strip 320. Specifically, the pressure strip 320 can be fixedly connected to the main structure 100 via bolt connection or anchoring connection. The sealed curtain 310 can be sandwiched between the main structure 100 and the pressure strip 320, and is clamped and fixed by the main structure 100 and the pressure strip 320.
[0049] In some embodiments, the sealing curtain 310 includes a plurality of parallel curtain strips 311, with no gap between any two adjacent curtain strips 311. The ends of the plurality of curtain strips 311 facing the main structure 100 can be connected into a single structure and sandwiched between the main structure 100 and the pressure strip 320, fixedly disposed relative to the main structure 100. The ends of the curtain strips 311 away from the main structure 100 are movable, allowing them to move to a certain extent relative to the conveyor belt 3100. Furthermore, the curtain strips 311 can hang in a drooping state under their own weight, maintaining the integrity of the vertical sealing surface.
[0050] During use, the channels between each curtain 311 can be dynamically opened by the impact of materials. The curtain 311 swings to achieve unobstructed conveying of tobacco shreds and form a continuous air curtain barrier to effectively intercept fine particles and dust diffusion.
[0051] In some embodiments, the surface of the sealing curtain 310 may be treated with special antistatic and wear-resistant methods to ensure stable physical sealing performance under continuous material scouring, and to avoid sealing failure caused by wear or electrostatic adsorption of the sealing curtain 310, thereby ensuring the long-term reliability of the material centering device 1000 and the cleanliness of the operating environment.
[0052] like Figure 1 and Figure 3As shown, in some embodiments, a dustproof and pressure-relief net 400 is installed at one end of the main structure 100 facing the discharge hood 2100. The dustproof and pressure-relief net 400 can be offset from the discharge hood 2100. In addition, the dustproof and pressure-relief net 400 can connect the internal space of the main structure 100 with the external environment, which can achieve pressure relief while trapping particles, reducing dust in the operating environment and improving cleanliness.
[0053] In some embodiments, the dustproof pressure relief net 400 can be sealed using a multi-layer composite filter medium. Its core layer is made of nanofiber composite material, which achieves gradient interception of submicron-sized dust particles through ultra-micro pores. While maintaining the internal pressure balance of the material centering device 1000, it allows the positive pressure airflow generated by the falling material to be efficiently discharged along a preset path. Furthermore, the dustproof pressure relief net 400 employs an integrated sealing frame assembly process, combined with hydrophobic and anti-adhesion surface treatment technology, effectively avoiding the risk of pore blockage and ensuring the long-term stability of pressure relief efficiency and filtration performance.
[0054] In summary, the material centering device 1000 provided in this application embodiment can significantly suppress the dispersion of dust from the gas-solid two-phase flow when materials fall, through the inclined guiding mechanism 200, achieving axial material aggregation and balanced cross-sectional density distribution. Furthermore, the material centering device 1000 has a simple structure, is easy to use and maintain, and is inexpensive, allowing for large-scale application. Simultaneously, it balances precise material conveying with environmental performance, solving problems such as dust pollution, material deviation, and seal failure associated with traditional equipment, thus improving conveying efficiency and the cleanliness of the working environment.
[0055] In addition, the embodiment also provides a belt conveyor, including an upstream conveying device 2000, a downstream conveying device 3000, and a material centering device 1000 provided in the embodiment. The main structure 100 of the material centering device 1000 is connected to the discharge hood 2100 of the upstream conveying device 2000, and the second end 202 of the guiding mechanism 200 (i.e., the end of the retaining edge 230 away from the shaping plate 220) is in close contact with the conveyor belt 3100 of the downstream conveying device 3000.
[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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.
[0057] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A material centering device, characterized by, Applied to the discharge hood of a belt conveyor, the material centering device is configured with a discharge direction, and the material centering device includes: The main structure, one end of which is connected to the discharge hood of the upstream material conveying device; The flow guiding mechanism is equipped with a first end and a second end arranged along the material dropping direction. The first end is connected to the main structure, and the second end is in close contact with the conveyor belt of the downstream conveying device. The opening area of the second end is smaller than the opening area of the first end.
2. The material centering device of claim 1, wherein, The flow guiding mechanism includes a flow guiding plate and a baffle. One end of the flow guiding plate is connected to the main structure. Two flow guiding plates are arranged at intervals opposite each other. The two flow guiding plates gradually tilt towards each other from the end closer to the main structure to the end farther away from the main structure. Each of the guide plates is provided with a baffle at the end away from the main structure, and the baffle is in close contact with the conveyor belt.
3. The material centering device of claim 2, wherein, The tilt angle of the guide vane is adjustable.
4. The material centering device according to claim 2 or 3, characterized in that, The flow guiding mechanism also includes a shaping plate, one end of which is connected to the end of the flow guiding plate away from the main structure, and the baffle is connected to the end of the shaping plate away from the flow guiding plate. The end of the baffle away from the shaping plate is in contact with the conveyor belt.
5. The material centering device according to claim 4, characterized in that, The shaping plate is parallel to the material dropping direction.
6. The material centering device according to claim 1, characterized in that, The material centering device also includes two opening structures arranged sequentially along the conveying direction of the conveyor belt. Each opening structure is equipped with a sealing curtain. The end of the sealing curtain away from the conveyor belt is connected to the main structure, and the end of the sealing curtain facing the conveyor belt is configured as a movable end.
7. The material centering device according to claim 6, characterized in that, The material centering device also includes a pressure strip, which is connected to the main structure. The end of the sealing curtain near the main structure is pressed between the main structure and the pressure strip.
8. The material centering device according to claim 6 or 7, characterized in that, The sealed curtain includes multiple curtain strips arranged in parallel. The end of the curtain strips facing the main structure is fixed, and the end of the curtain strips facing the conveyor belt is movably arranged.
9. The material centering device according to claim 1, characterized in that, A dustproof and pressure-relief net is installed at one end of the main structure facing the discharge hood, and the dustproof and pressure-relief net is offset from the discharge hood.
10. A belt conveyor, characterized in that, It includes an upstream conveying device, a downstream conveying device, and a material centering device as described in any one of claims 1 to 9, wherein the main structure is connected to the discharge hood of the upstream conveying device, and the second end of the guiding mechanism is in close contact with the conveying belt of the downstream conveying device.