A feeding device

Abstract

The application relates to a feeding device, which comprises a material lifting machine, a top of the material lifting machine is provided with a material dropping opening, an electronic belt scale, the electronic belt scale is located below the material dropping opening, the electronic belt scale is used for quantitatively weighing the material falling from the material dropping opening, and a material guide, the material guide is located between the material dropping opening and the electronic belt scale, the material guide is inclined to the vertical material dropping direction of the electronic belt scale relative to the material dropping opening, and the orthographic projection of the material guide on the electronic belt scale covers the orthographic projection of the material dropping opening on the electronic belt scale. The tobacco can be protected, dust can be avoided, and the subsequent processing procedure of the cigarettes can be effectively ensured.

Description

Technical Field

[0001] This application relates to the field of material delivery technology, and in particular to a feeding device. Background Technology

[0002] In the cigarette manufacturing workshop, materials (such as tobacco shreds and tobacco sheets) are typically transported using equipment such as elevators and belt conveyors. To ensure uniform feeding, the materials are usually lifted by the elevator and then conveyed through a discharge port to an electronic belt scale, which then quantitatively feeds them to the next process step.

[0003] In related technologies, when materials fall from the discharge port, problems such as tobacco shreds breaking and dust generation can easily occur, affecting subsequent processes. Utility Model Content

[0004] Based on this, this application provides a feeding device that can protect tobacco, prevent dust, and effectively ensure subsequent processing steps of cigarettes.

[0005] This application provides a feeding device, including:

[0006] Material hoist, with a material discharge port at the top;

[0007] An electronic belt scale is located below the material inlet and is used to quantitatively weigh the material falling from the material inlet.

[0008] The material guide is located between the discharge port and the electronic belt scale. The material guide is inclined relative to the discharge port in the vertical discharge direction of the electronic belt scale, and the orthographic projection of the material guide on the electronic belt scale covers the orthographic projection of the discharge port on the electronic belt scale.

[0009] In one implementation, one end of the electronic belt scale is located below the material discharge port, and the other end of the electronic belt scale is located on the side of the material discharge port away from the material elevator.

[0010] The end of the material guide facing the electronic belt scale is tilted away from the material elevator.

[0011] In one implementation, the material guide is tilted at an angle of 60°-75° relative to the plane of the electronic belt scale on the side facing the elevator.

[0012] In one implementation, the end of the material guide facing the electronic belt scale is connected to the electronic belt scale. Along a first direction, the end of the material guide facing the electronic belt scale and the side away from the material elevator are at a first distance from the end of the electronic belt scale facing the material elevator. The side of the discharge port away from the material elevator is at a second distance from the material elevator. The first distance is greater than the second distance.

[0013] The first direction is the direction from the end of the electronic belt scale facing the material hoist to the end away from the material hoist.

[0014] In one implementation, the material guide is in contact with the electronic belt scale at one end.

[0015] In one implementation, a hopper is provided between the discharge port and the material guide, and the hopper includes at least a first inclined wall, which is a side wall of the hopper facing the material elevator; the inclination angle of the first inclined wall is consistent with the inclination angle of the material guide.

[0016] In one implementation, the feeding device further includes a monitoring sensor, which is located in the hopper and is used to monitor the material falling status in the hopper.

[0017] The material hoist stops lifting material to the discharge port based on the monitoring signal from the monitoring sensor.

[0018] In one implementation, the monitoring sensor includes a through-beam sensor, which includes:

[0019] A signal transmitter is located on one of the side walls of the hopper;

[0020] A signal receiver is disposed opposite to a signal transmitter on another side wall of the hopper. The signal receiver is used to receive signals emitted by the signal transmitter.

[0021] If the signal receiver does not receive a signal from the signal transmitter for a period of time longer than the preset time, the material elevator will stop lifting material to the discharge port.

[0022] In one implementation, the hopper further includes a second inclined wall, which is disposed opposite to the first inclined wall, and the inclination direction of the second inclined wall is opposite to that of the first inclined wall.

[0023] In one implementation, the hopper is equipped with an observation window.

[0024] The feeding device provided in this application embodiment sets the discharge port at the top of the material elevator and places the electronic belt scale below the discharge port. Material can be lifted by the material elevator to the top discharge port and then fall onto the electronic belt scale. The electronic belt scale can quantitatively weigh the material, facilitating control over the amount used. A material guide is installed between the discharge port and the electronic belt scale, and this guide is inclined relative to the discharge port in the direction of vertical drop towards the electronic belt scale. The orthogonal projection of the material guide on the electronic belt scale overlaps the orthogonal projection of the discharge port. Thus, the material falling from the discharge port to the electronic belt scale is guided by the inclined guide and slides along its inclined direction onto the scale, slowing the drop speed and reducing the impact force, thus minimizing the risk of material breakage. In addition, the material slides down along the inclined direction of the material guide, which reduces the impact force between the material and the electronic belt scale, reduces the dust generated by the material falling, extends the service life of the feeding device, and facilitates subsequent processing of the material. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a feeding device provided in some embodiments of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 11-Material hoist; 12-Electronic belt scale; 13-Material guide; 14-Discharge hopper; 15-Monitoring sensor;

[0028] 111 - Material discharge port; 141 - First inclined sidewall; 142 - Second inclined sidewall. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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.

[0031] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via 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. Similarly, "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.

[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0035] Figure 1 This is a schematic diagram of a feeding device provided in some embodiments of this application.

[0036] In response to the technical problems existing in the relevant technologies, refer to Figure 1 As shown in some examples of embodiments of this application, a feeding device is provided. The feeding device may include a material elevator 11.

[0037] In some examples, the material can be shredded tobacco. The feed inlet of the material elevator 11 can be connected to the tobacco production equipment and receive the shredded tobacco provided by the tobacco production equipment.

[0038] It is understood that in some examples of the embodiments of this application, tobacco shreds are only shown as one specific example of the material, and in other examples, the material can be other types of materials. For example, in other material handling conveyor lines that require quantitative supply.

[0039] In some examples, the material hoist 11 may include a screw conveyor.

[0040] In some examples, the material hoist 11 may include a conveyor belt hoist.

[0041] It is understood that in some examples of the embodiments of this application, the type of material hoist 11 is only shown as a specific example and is not intended to limit the specific type of material hoist 11.

[0042] In some examples, the material hoist 11 can be positioned relative to the vertical direction (e.g., Figure 1 The tilt setting is indicated by the direction shown on the y-axis.

[0043] In some examples, refer to Figure 1 As shown, the top of the material elevator 11 may have a discharge port 111. The material can be lifted by the material elevator 11 and rise along the material elevator 11 to the top of the material elevator 11, and fall from the discharge port 111.

[0044] In some examples, refer to Figure 1 As shown, the feeding device may include an electronic belt scale 12. The electronic belt scale 12 may be located below the discharge port 111.

[0045] In some examples, the material falling from the discharge port 111 can land on the electronic belt scale 12, which quantitatively weighs the material.

[0046] In some examples, after the electronic belt scale 12 weighs the material quantitatively, the belt of the electronic belt scale 12 transports the material to the next material processing step.

[0047] In some examples, the specific structure of the electronic belt scale 12 may be the same as, similar to or similar to that of the electronic belt scale 12 in the related art. For details, please refer to the detailed description of the related art. The embodiments of this application will not be repeated here.

[0048] In some examples of embodiments of this application, an electronic belt scale 12 is provided below the material discharge port 111, which can quantitatively weigh the material falling from the material discharge port 111. This facilitates quantitative processing of the material in subsequent processes.

[0049] In some examples, refer to Figure 1 As shown, the feeding device may include a material guide 13. The material guide 13 may be located between the discharge port 111 and the electronic belt scale 12.

[0050] In some examples, the material guide 13 can be positioned relative to the discharge port 111 in the vertical discharge direction of the electronic belt scale 12 (e.g., Figure 1 The y-axis is tilted in the negative direction.

[0051] In some examples, the orthographic projection of the material guide 13 on the electronic belt scale 12 can cover the orthographic projection of the discharge port 111 on the electronic belt scale 12.

[0052] The feeding device provided in this application embodiment sets the discharge port 111 at the top of the material elevator 11 and sets the electronic belt scale 12 below the discharge port 111. In this way, the material can be lifted by the material elevator 11 to the top discharge port 111 and fall onto the electronic belt scale 12 through the discharge port 111. The electronic belt scale 12 can quantitatively weigh the amount of material used, which is convenient for controlling the amount of material used. By setting a material guide 13 between the discharge port 111 and the electronic belt scale 12, and setting the material guide 13 to be inclined relative to the discharge port 111 towards the electronic belt scale 12 in the direction of vertical material discharge, and the orthogonal projection of the material guide 13 on the electronic belt scale 12 covering the orthogonal projection of the discharge port 111 on the electronic belt scale 12, the material falling from the discharge port 111 to the electronic belt scale 12 can be guided by the inclined material guide 13 and slide down onto the electronic belt scale 12 along the inclined direction of the material guide 13. This slows down the falling speed of the material, thereby reducing the impact force on the material during the fall and reducing the problem of material breakage. In addition, the material sliding down along the inclined direction of the material guide 13 reduces the impact force between the material and the electronic belt scale 12, which can reduce the dust generated by the falling material, extend the service life of the feeding device, and facilitate subsequent processing of the material.

[0053] In some examples, refer to Figure 1 As shown, one end of the electronic belt scale 12 can be located below the material discharge port 111.

[0054] In some examples, one end of the electronic belt scale 12 may be located directly below the discharge port 111.

[0055] In some examples, one end of the electronic belt scale 12 may be located diagonally below the discharge port 111.

[0056] In some examples, the other end of the electronic belt scale 12 may be located on the side of the discharge head away from the material elevator 11.

[0057] In some examples, the other end of the electronic belt scale 12 can be connected to other process equipment in the material processing process.

[0058] In some examples, the end of the material guide 13 facing the electronic belt scale 12 can be tilted away from the material hoist 11. For example, with Figure 1 As an example, the end of the material guide 13 facing the electronic belt scale 12 can be along... Figure 1 The x-axis is tilted in the negative direction.

[0059] In some examples of embodiments of this application, one end of the electronic belt scale 12 is positioned below the material discharge port 111, and the other end of the electronic belt scale 12 is positioned on the side of the material discharge port 111 away from the material elevator 11. This facilitates the connection of the other end of the electronic belt scale 12 with the next material processing step, and facilitates the installation and arrangement of the electronic belt scale 12. The material guide 13 is tilted towards the side of the electronic belt scale 12 away from the material elevator 11; this ensures that the material guided by the material guide 13 is in the same, similar to, or approximately the same direction of operation as the electronic belt scale 12. This facilitates the flow of material after it falls from the material discharge port 111, as it is guided by the material guide 13 to the side of the electronic belt scale 12 that connects with the next processing step.

[0060] In some examples, refer to Figure 1 As shown, the tilt angle α of the side of the material guide 13 facing the elevator relative to the plane where the electronic belt scale 12 is located can be 60°-75°.

[0061] In some examples, the tilt angle α can be 65°-75°.

[0062] In some examples, the tilt angle α can be 70°-75°.

[0063] In some examples, the tilt angle α can be 60°-70°.

[0064] In some examples, the tilt angle α can be 60°-65°.

[0065] In some examples, the tilt angle α can be 65°-70°.

[0066] In some examples of embodiments of this application, the inclination angle α of the material guide 13 towards the elevator relative to the plane of the electronic belt scale 12 is set to 60°-75°. On the one hand, this allows the material to slide down the slope, slowing down the falling speed, preventing dust, and protecting the material from breakage. On the other hand, it ensures that the material has sufficient downward momentum, preventing insufficient downward momentum on the material guide 13, avoiding material blockage on the material guide 13, and improving material processing efficiency.

[0067] In some examples, refer to Figure 1 As shown, the end of the material guide 13 facing the electronic belt scale 12 can be connected to the electronic belt scale 12. In this way, the material can continuously slide onto the electronic belt scale 12 via the material guide 13. This reduces the risk of material breakage and lowers dust levels from the feeding device.

[0068] In some examples, the end of the material guide 13 facing the electronic belt scale 12 can be connected to the brackets or frames on both sides of the electronic belt scale 12.

[0069] In some examples, along the first direction (e.g.) Figure 1 (The negative direction shown by the x-axis) The material guide 13 faces one end of the electronic belt scale 12, and the side of the material guide 13 away from the material elevator 11 can have a first distance d1 between it and the material elevator 11. The first direction can be from the end of the electronic belt scale 12 facing the material elevator 11 to the end away from the material elevator 11.

[0070] In some examples, refer to Figure 1 As shown, the side of the discharge port 111 away from the material elevator 11 can have a second distance d2 between it and the material elevator 11.

[0071] In some examples, the first distance d1 can be greater than the second distance d2. This ensures that the material falling from the discharge port 111 is guided by the material guide 13 and slides along the inclined direction of the material guide 13, rather than falling directly onto the electronic belt scale 12. This reduces the impact force on the material, decreases the risk of material breakage, and reduces dust generated by the feeding device. It also facilitates subsequent processes.

[0072] In some examples, the end of the material guide 13 facing the electronic belt scale 12 is in contact with the electronic belt scale 12.

[0073] In some examples, the end of the material guide 13 facing the electronic belt scale 12 may contact the belt of the electronic belt scale 12.

[0074] In some examples, the end of the material guide 13 facing the electronic belt scale 12 can slide into contact with the belt of the electronic belt scale 12.

[0075] In some examples of embodiments of this application, the end of the material guide 13 facing the electronic belt scale 12 is configured to contact the electronic belt scale 12. This reduces the gap between the end of the material guide 13 facing the electronic belt scale 12 and the electronic belt scale 12, facilitating the material to slide onto the belt of the electronic belt scale 12, protecting the material, preventing breakage, and reducing dust generated by the feeding device. This provides convenience for subsequent processes.

[0076] In some examples, refer to Figure 1 As shown, a hopper 14 may be provided between the material discharge port 111 and the material guide 13.

[0077] In some examples, hopper 14 may include a funnel.

[0078] In some examples, refer to Figure 1 As shown, the hopper 14 may include at least a first inclined wall. The first inclined wall may be a side wall of the hopper 14 facing the material elevator 11.

[0079] In some examples, the tilt angle of the first inclined wall can be the same as the tilt angle of the material guide 13.

[0080] In some examples, the side of the first inclined wall away from the material elevator 11 may be parallel or approximately parallel to the material guide 13.

[0081] In some examples of embodiments of this application, the hopper 14 is configured to include at least a first inclined sidewall 141. The first inclined sidewall 141 is the sidewall of the hopper 14 facing the material elevator 11; and the inclination angle of the first inclined wall is set to be consistent with the inclination angle of the material guide 13. In this way, the feed material can slide down the first inclined wall of the hopper 14 and slide onto the material guide 13. This can reduce the impact force between the material and the material guide 13, reduce the risk of material breakage, reduce the buildup generated by the feeding device, and facilitate subsequent processing steps.

[0082] In some examples, refer to Figure 1 As shown, the feeding device may include a monitoring sensor 15. The monitoring sensor 15 may be located in the hopper 14. The monitoring sensor 15 may be used to monitor the material falling from the hopper 14.

[0083] In some examples, the material hoist 11 can pause lifting material from the discharge port 111 based on the monitoring signal from the monitoring sensor 15.

[0084] In some examples, the material hoist 11 can pause operation based on the detection signal from the monitoring sensor 15.

[0085] In some examples, the material hoist 11 may be controlled by a controller. The controller may include any one of a central processing unit (CPU), a microcontroller unit (MCU), a programmable logic controller (PLC), or a field programmable gate array (FPGA).

[0086] It is understood that the specific types of controllers in the embodiments of this application are only shown as specific examples and are not intended to limit the specific types of controllers in the embodiments of this application.

[0087] It is understood that in this embodiment of the application, the monitoring sensor 15 can report monitoring signals to the controller.

[0088] In some examples, monitoring sensor 15 can report monitoring signals to the controller in real time.

[0089] In some examples, the monitoring sensor 15 can report monitoring signals to the controller at preset time intervals.

[0090] In some examples, the preset time period can be 5s, 10s, 20s, or 30s, etc.

[0091] In some examples, the preset time period can be 1 minute, 2 minutes, 3 minutes, 5 minutes, etc.

[0092] In this embodiment of the application, the specific time of the preset time period is only shown as a specific example and is not intended to limit the preset time period.

[0093] In some examples of embodiments of this application, a monitoring sensor 15 is installed in the hopper 14 to monitor the falling state of the material. Thus, in the event of hopper blockage, the material elevator 11 can suspend lifting material from the discharge port 111 based on the detection signal from the monitoring sensor 15. This effectively controls the material lifting progress, facilitates quantitative control of the material, and facilitates subsequent processing and production.

[0094] In some examples, monitoring sensor 15 may include a through-beam sensor (not labeled in the figure).

[0095] In some examples, the through-beam sensor may include a signal transmitter (not labeled in the figure). The signal transmitter may be located on one of the side walls of the hopper 14.

[0096] In some examples, the through-beam sensor may include a signal receiver. The signal receiver may be disposed opposite to the signal transmitter on another side wall of the hopper 14.

[0097] In some examples, the signal receiver can be located in the signal transmission path of the signal transmitter. The signal receiver can receive signals emitted by the signal transmitter.

[0098] In some examples, if the signal receiver does not receive a signal from the signal transmitter for a period of time longer than a preset time, the material hoist 11 suspends the hoisting of material to the discharge port 111.

[0099] In some examples, when the material falls normally, it passes between the signal transmitter and the signal receiver, blocking the signal emitted by the transmitter. In this case, the signal receiver cannot receive the signal. However, the time the material blocks the signal during normal falling is limited. In some examples of this application's embodiments, this time can be set to a preset duration.

[0100] In some examples, when material blockage occurs at the discharge port, the material falling speed decreases significantly, and the signal blocking time of the material to the signal transmitter is prolonged. If the signal blocking time of the material to the signal transmitter exceeds a preset time length, that is, if the signal receiver does not receive the signal emitted by the signal transmitter within the preset time length, it can be determined that material blockage has occurred in the discharge hopper 14. At this time, the material elevator 11 can suspend the material lifting from the discharge port 111.

[0101] In some examples, as the electronic belt scale 12 operates, the material is quantitatively transported to the next processing step, the material at the discharge port 111 decreases, and after the material descends, the signal receiver can receive the signal emitted by the signal transmitter again. At this time, the material elevator 11 can be restarted.

[0102] In some examples, through-beam sensors may include photogates or photoelectric switches.

[0103] In some examples of embodiments of this application, the signal transmitter of the through-beam sensor is disposed on one side wall of the hopper 14, and the signal receiver of the through-beam sensor is disposed opposite to the signal transmitter on the other side wall of the hopper 14. In this way, the time it takes for the signal receiver to not receive a signal from the signal transmitter can be used to determine whether material blockage has occurred in the hopper 14, facilitating timely suspension of the material elevator 11 and enabling quantitative transport of materials to the next processing step.

[0104] In some examples, the hopper 14 may include a second inclined sidewall 142. The second inclined sidewall 142 may be disposed opposite to the first inclined sidewall 141.

[0105] In some examples, the inclination direction of the second inclined sidewall 142 may be opposite to that of the first inclined sidewall 141. That is, a funnel-shaped structure may be formed between the second inclined sidewall 142 and the first inclined sidewall 141.

[0106] In some examples of embodiments of this application, the second inclined sidewall 142 of the hopper 14 is arranged opposite to the first inclined wall, and the inclination direction of the second inclined wall is opposite to that of the first inclined wall. This facilitates the hopper 14 forming a funnel-shaped structure, allowing materials to collect on the material guide 13 and slide down, reducing the impact force on the falling materials, decreasing the risk of material breakage, and lowering dust generated by the feeding device.

[0107] In some examples, the hopper 14 may be equipped with an observation window (not shown in the figure). The observation window may be a transparent observation window or a glass window.

[0108] In some examples of embodiments of this application, by providing an observation window in the hopper 14, the operator can easily observe the material falling in the hopper 14 through the observation window, and can promptly detect material blockage in the hopper 14.

[0109] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent 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 all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A feeding device, characterized in that, include: Material elevator (11), the top of which has a discharge port (111); An electronic belt scale (12) is located below the discharge port (111) and is used to quantitatively weigh the material falling from the discharge port (111). Material guide (13) is located between the discharge port (111) and the electronic belt scale (12). The material guide (13) is inclined relative to the discharge port (111) in the vertical discharge direction of the electronic belt scale (12), and the orthographic projection of the material guide (13) on the electronic belt scale (12) covers the orthographic projection of the discharge port (111) on the electronic belt scale (12).

2. The feeding device according to claim 1, characterized in that, One end of the electronic belt scale (12) is located below the material discharge port (111), and the other end of the electronic belt scale (12) is located on the side of the material discharge port (111) away from the material elevator (11). The end of the material guide (13) facing the electronic belt scale (12) is tilted toward the side away from the material elevator (11).

3. The feeding device according to claim 2, characterized in that, The material guide (13) is tilted at an angle of 60°-75° relative to the plane of the electronic belt scale (12) on the side facing the elevator.

4. The feeding device according to claim 2, characterized in that, The material guide (13) is connected to the electronic belt scale (12) at one end facing the electronic belt scale (12) along a first direction. The side of the material guide (13) facing the electronic belt scale (12) and away from the material elevator (11) has a first distance from one end of the material elevator (11). The side of the discharge port (111) away from the material elevator (11) has a second distance from the material elevator (11). The first distance is greater than the second distance. The first direction is the direction from one end of the electronic belt scale (12) toward the material elevator (11) to the end away from the material elevator (11).

5. The feeding device according to claim 2, characterized in that, The material guide (13) is in contact with the electronic belt scale (12) at one end facing the electronic belt scale (12).

6. The feeding device according to any one of claims 1-5, characterized in that, A hopper (14) is provided between the discharge port (111) and the material guide (13). The hopper (14) includes at least a first inclined wall, which is the side wall of the hopper (14) facing the material elevator (11). The inclination angle of the first inclined wall is the same as the inclination angle of the material guide (13).

7. The feeding device according to claim 6, characterized in that, The feeding device also includes a monitoring sensor (15), which is located in the hopper (14) and is used to monitor the material falling status of the hopper (14). The material hoist (11) pauses lifting the material to the discharge port (111) based on the monitoring signal of the monitoring sensor (15).

8. The feeding device according to claim 7, characterized in that, The monitoring sensor (15) includes a through-beam sensor, which includes: A signal transmitter is disposed on one of the side walls of the hopper (14); A signal receiver is disposed opposite to the signal transmitter on another side wall of the hopper (14), and the signal receiver is used to receive the signal emitted by the signal transmitter; If the signal receiver does not receive a signal from the signal transmitter for a period of time longer than a preset time, the material hoist (11) will stop hoisting the material to the discharge port (111).

9. The feeding device according to claim 6, characterized in that, The hopper (14) further includes a second inclined wall, which is disposed opposite to the first inclined wall, and the inclination direction of the second inclined wall is opposite to that of the first inclined wall.

10. The feeding device according to claim 6, characterized in that, The hopper (14) is equipped with an observation window.

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