A material trapping device
By using a combination of mixer, buffer hopper and blower in the mud production process, the problem of delamination caused by mud hydration was solved, achieving efficient mixing and rapid volatilization of mud, improving production efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YINGKOU BAYUQUAN REFRACTORIES CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-30
AI Technical Summary
In existing technologies, the product is cracked due to hydration reaction during the mixing process of mud, resulting in a high scrap rate. Traditional material trapping methods occupy a lot of space, are costly, and have low production efficiency, especially when there are many orders and the supply is insufficient.
The device includes a mixer, a first buffer hopper, a trapping hopper, and a blower. The mixer mixes the mud, the buffer hopper stores and spreads the mud, and the blower accelerates the volatilization of organic matter, thus achieving continuous mixing and rapid volatilization of the mud and reducing the natural volatilization time.
It improves the mixing efficiency of mud, shortens the material trapping cycle, reduces production costs, and increases production efficiency, solving the problems of low efficiency, large footprint, and high cost in traditional material trapping methods.
Smart Images
Figure CN224425981U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of refractory material production technology, and in particular to a material trapping device. Background Technology
[0002] Currently, magnesia-carbon products such as ladle bricks, converter bricks, and electric furnace bricks are all machine-pressed and dried. The production process mainly involves adding magnesia of different particle sizes, graphite, and various additives to a mixer, then adding phenolic resin as a liquid binder, mixing them into a clay with certain binding properties. This clay is then pressed into shape by friction, electric screw, or hydraulic brick presses, and finally dried in a drying kiln. Because frictional heat is generated during the mixing process, increasing the clay temperature, and because the phenolic resin contains moisture and the magnesia particles contain free calcium, the hydration of both causes particle expansion. The increased temperature accelerates the hydration process, resulting in a high probability of internal delamination in the pressed products, leading to a high scrap rate and a high accident rate when these products are used in steel plants.
[0003] Therefore, in existing technologies, freshly mixed clay is typically placed in a hopper for 4-48 hours before being machine-pressed to ensure thorough hydration and completion of the hydration process, thus ensuring the quality of the pressed product. However, this method occupies a significant amount of production space, and when orders increase production, a shortage of hoppers can occur, reducing production efficiency and increasing production costs.
[0004] Therefore, there is a need to provide a material trapping device to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a material trapping device that solves the problems of low production efficiency, large footprint, and high cost in traditional material trapping methods, thereby improving production efficiency and reducing production costs.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A material trapping device, comprising:
[0008] A mixer is used to mix mud.
[0009] The first buffer hopper is connected to the mixer and has a first cavity in which the mud can be contained.
[0010] A trapping hopper is configured to communicate with the first buffer hopper. The trapping hopper has a second cavity into which mud can be contained. A material rake is provided in the second cavity for spreading the mud.
[0011] A fan, the fan being used to blow air into the second cavity.
[0012] Preferably, the mixer includes:
[0013] The mixer body has a connected third cavity and a first outlet;
[0014] The first door panel is used to open or close the first exit.
[0015] Preferably, the first buffer hopper includes:
[0016] The first buffer hopper body has a first cavity, a first inlet and a second outlet that are connected.
[0017] The second door panel is used to open or close the second exit.
[0018] Preferably, the trapping hopper includes:
[0019] The hopper body has a connected second cavity and a third outlet;
[0020] The third door panel is used to open or close the third exit.
[0021] Preferably, the third outlet is located on one side of the bottom wall of the hopper body, and the material trapping device further includes:
[0022] A drive assembly is provided, wherein the hopper body is disposed at the output end of the drive assembly, and the drive assembly is configured to drive the hopper body to rotate such that the hopper body is set at an angle to the horizontal plane.
[0023] Preferably, the driving component includes:
[0024] A rotating shaft is disposed on the outer wall of the hopper body, and a first gear is disposed on the rotating shaft;
[0025] The driving component has a second gear on its output shaft, which meshes with the first gear, and the driving component can drive the rotating shaft to rotate.
[0026] Preferably, the material trapping device further includes:
[0027] The second buffer hopper is connected to the trapping hopper. The second buffer hopper has a fourth cavity in which the mud can be contained.
[0028] Preferably, the second buffer hopper includes:
[0029] The second buffer hopper body has a connected fourth cavity, a second inlet and a fourth outlet;
[0030] The fourth door panel is used to open or close the fourth exit.
[0031] Preferably, the material trapping device further includes
[0032] The material transport vehicle is movable and capable of carrying mud.
[0033] Preferably, the material trapping device further includes:
[0034] A first vibrating element is disposed on the first buffer hopper, and the first vibrating element is capable of causing the first buffer hopper to vibrate.
[0035] The beneficial effects of this utility model are:
[0036] This material trapping device includes a mixer, a first buffer hopper, a trapping hopper, and a blower. The mixer is used to mix the mud. The first buffer hopper is connected to the mixer and has a first cavity in which the mud can be contained. The trapping hopper is connected to the first buffer hopper and has a second cavity in which the mud can be contained. A material rake is provided in the second cavity to spread the mud thinly. The blower is used to blow air into the second cavity.
[0037] First, the mud is thoroughly mixed using a mixer. Then, the mud is poured from the mixer into the first chamber of the first buffer hopper. Understandably, the mixer can continue mixing new mud during this process. When stabilization is needed, the mud in the first chamber of the first buffer hopper is poured into the stabilization hopper, where a rake spreads the mud thinly. Simultaneously, a fan ventilates and cools the second chamber to accelerate the volatilization of organic matter. By setting up the first buffer hopper, the mud mixed by the mixer can be stored there. The mixer can then continue mixing new mud and storing it in the first chamber of the first buffer hopper, improving the mixing efficiency and mitigating mud supply interruptions to some extent. Spreading the mud thinly with a rake and blowing air into the stabilization hopper accelerates the volatilization of organic matter, reducing the time required for natural volatilization and shortening the stabilization cycle. This stabilization device solves the problems of low production efficiency, large footprint, and high cost in traditional stabilization methods, improving production efficiency and reducing production costs. Attached Figure Description
[0038] Figure 1 This is a schematic diagram of the material trapping device provided by this utility model.
[0039] In the picture:
[0040] 1. Mixer; 11. Mixer body; 111. Third cavity; 12. First door panel;
[0041] 2. First buffer hopper; 21. First buffer hopper body; 211. First cavity; 22. Second door panel;
[0042] 3. Containing hopper; 31. Containing hopper body; 311. Second cavity; 32. Third door panel; 33. Material rake;
[0043] 4. Fan;
[0044] 5. Second buffer hopper; 51. Second buffer hopper body; 511. Fourth cavity; 52. Fourth door panel;
[0045] 6. Material transport vehicle;
[0046] 71. First vibrating element; 72. Second vibrating element. Detailed Implementation
[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.
[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 utility model based on the specific circumstances.
[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0050] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0051] In existing technologies, freshly mixed clay is typically placed in a hopper for 4-48 hours before being machine-pressed to ensure thorough hydration and completion of the molding process, thus guaranteeing the quality of the pressed product. However, this method consumes a significant amount of production space, and when orders increase production, a shortage of hoppers can occur, reducing production efficiency and increasing costs.
[0052] To address the aforementioned problems, this embodiment provides a material trapping device. This device includes a mixer 1, a first buffer hopper 2, a trapping hopper 3, and a blower 4. The mixer 1 is used to mix the mud. The first buffer hopper 2 is connected to the mixer 1 and has a first cavity 211 into which the mud can be contained. The trapping hopper 3 is connected to the first buffer hopper 2 and has a second cavity 311 into which the mud can be contained. A rake 33 is provided in the second cavity 311 for spreading the mud thinly. The blower 4 is used to blow air into the second cavity 311.
[0053] First, the mud is uniformly mixed by mixer 1, and then the mud is released from mixer 1 into the first cavity 211 of the first buffer hopper 2. It is understood that mixer 1 can continue to mix new mud at this time. When it is necessary to trap the mud, the mud in the first cavity 211 of the first buffer hopper 2 is released into the trapping hopper 3, and the rake 33 spreads the mud thinly. At the same time, the blower 4 ventilates and cools the second cavity 311 to accelerate the volatilization of organic matter. By setting up the first buffer hopper 2, the mud after mixing by mixer 1 can be stored in the first buffer hopper 2. At this time, mixer 1 can continue to mix new mud and store it in the first cavity 211 of the first buffer hopper 2, improving the mixing efficiency of the mud and avoiding the problem of mud supply interruption to a certain extent. Using the rake 33 to spread the mud thinly and blowing air into the trapping hopper 3 by the blower 4 can accelerate the volatilization of organic matter in the mud, reduce the time required for natural volatilization, and shorten the trapping cycle. This material trapping device solves the problems of low production efficiency, large footprint, and high cost in traditional material trapping methods, thereby improving production efficiency and reducing production costs.
[0054] It should be noted that the specific thickness of the spread clay depends on the actual needs and should be flexibly controlled according to the characteristics of different clays. For example, the thickness of the spread clay is 3cm-5cm.
[0055] In one optional embodiment, the fan 4 is fixed to one side wall of the hopper 3. Specifically, the fan 4 can be fixedly connected to one side wall of the hopper 3 by welding, riveting or screw thread connection, which are common methods in the prior art. The side wall of the hopper 3 has an opening, and the air outlet of the fan 4 is directly opposite the opening. The fan 4 is started to blow air into the first cavity 211 to cool it down.
[0056] Specifically, the mixer 1 includes a mixer body 11 and a first door plate 12. The mixer body 11 has a communicating third cavity 111 and a first outlet. The first door plate 12 is used to open or close the first outlet. During the mixing process, the first door plate 12 closes the first outlet to prevent the mud from leaking out during the mixing process, so that the mud can be fully mixed in the third cavity 111. After the mixing is completed, the first door plate 12 opens the first outlet so that the mud is released into the first cavity 211 of the first buffer hopper 2.
[0057] In this embodiment, the opening and closing of the first door panel 12 is automatically controlled by pneumatic means, reducing the frequency and difficulty of manual operation and lowering the labor intensity of operators. It should be noted that automatically controlling the opening and closing of the first door panel 12 by activation to block or open the first outlet is a common technical means in the prior art, and will not be elaborated on in this embodiment.
[0058] It should be noted that the mixer body 11 also has a feeding port, which is connected to the third cavity 111. Sludge can be directly added into the third cavity 111 of the mixer body 11 through the feeding port.
[0059] Specifically, the first buffer hopper 2 includes a first buffer hopper body 21 and a second door plate 22. The first buffer hopper body 21 has a first cavity 211, a first inlet, and a second outlet that are connected. The second door plate 22 is used to open or close the second outlet. As an intermediate link between the mixer 1 and the trapping hopper 3, the first buffer hopper 2 can temporarily store the mixed mud, achieving production continuity and improving overall production efficiency. The mud mixed by the mixer 1 can enter the first cavity 211 through the first inlet, and the second door plate 22 can be used to open or close the second outlet to control the release and storage of the mud.
[0060] In this embodiment, the opening and closing of the second door panel 22 is automatically controlled pneumatically, reducing the frequency and difficulty of manual operation and lowering the labor intensity of operators. It should be noted that automatically controlling the opening and closing of the second door panel 22 via activation to block or open the second outlet is a common technique in the prior art, and will not be elaborated upon in this embodiment.
[0061] In this embodiment, the first buffer hopper 2 body and the mixer 1 body are fixed by means commonly found in the prior art, such as welding, riveting or screw thread connection, and the first outlet of the mixer 1 body and the first inlet of the first buffer hopper 2 body are connected.
[0062] Specifically, this material trapping device also includes a first vibrating element 71, which is disposed in the first buffer hopper 2. The first vibrating element 71 can cause the first buffer hopper 2 to vibrate. By driving the first buffer hopper 2 to vibrate through the first vibrating element 71, the mud material can be prevented from clumping or sticking to the wall, ensuring that the mud material in the first buffer hopper 2 can be smoothly discharged.
[0063] In this embodiment, the first vibrating element 71 is a vibrating motor. A first motor base is provided near the first buffer hopper 2, the fixed end of the vibrating motor is fixed to the first motor base, and the output end of the vibrating motor is connected to the first buffer hopper 2. Specifically, the output end of the vibrating motor can be connected to the first buffer hopper 2 by welding, riveting, or screw thread connection, which are common methods in the prior art.
[0064] Specifically, the hopper 3 includes a hopper body 31 and a third door plate 32. The hopper body 31 has a connected second cavity 311 and a third outlet. The third door plate 32 is used to open or close the third outlet. When hopper 31 needs to be hopperd, the third door plate 32 closes the third outlet so that the mud can be contained in the second cavity 311. The rake 33 spreads the mud in the second cavity 311 thinly, and the blower 4 blows air into the second cavity 311 to volatilize the organic matter in the mud. When hopper 31 is finished, the third door plate 32 opens the third outlet, and the rake 33 continues to work to push the mud to the third outlet for discharge, so as to proceed to the next process.
[0065] In this embodiment, the switch of the third door panel 32 is automatically controlled pneumatically, reducing the frequency and difficulty of manual operation and lowering the labor intensity of operators. It should be noted that automatically controlling the switch of the third door panel 32 via activation to block or open the third outlet is a common technique in the prior art, and will not be elaborated upon in this embodiment.
[0066] In this embodiment, in order to ensure effective material trapping, the trapping hopper body 31 is cylindrical, so that the trapping hopper 3 has a large bottom wall area, so that the mud can be spread into a thinner layer thickness by the material rake 33 in the trapping hopper 3, or a large amount of mud can be trapped at one time under a specified layer thickness, to meet the needs of large-scale production and improve production efficiency.
[0067] In this embodiment, the bottom wall of the trapping hopper 3 is circular. This trapping device also includes a drive motor. The fixed end of the drive motor is fixedly connected to the side of the bottom wall of the trapping hopper 3 away from the first cavity 211. Specifically, the drive motor can be fixedly connected to the side of the bottom wall of the trapping hopper 3 away from the first cavity 211 by welding, riveting or screw thread connection and other common methods in the prior art. The output shaft of the drive motor is sealed and inserted into the first cavity 211, and the output shaft is coaxially arranged with the bottom wall of the trapping hopper 3. The material rake 33 is fixed on the output shaft. At this time, the material rake 33 is spaced apart from the bottom wall. The specific distance of the interval depends on the thickness of the mud to be thinned. The drive motor can drive the material rake 33 to rotate so that the material rake 33 can thin the mud in the first cavity 211.
[0068] In one optional embodiment, the top of the trapping hopper 3 body 31 is open, and the trapping hopper 3 body 31 is positioned below the first buffer hopper 22. The second outlet of the first buffer hopper 22 is directly opposite the top opening of the trapping hopper 3 body 31, allowing the mud material discharged from the first buffer hopper 2 to fall directly into the second cavity 311. The open design allows the mud material inside the trapping hopper body 31 to have better contact with air, and with the blowing action of the blower 4, the volatilization of organic matter in the mud is accelerated, shortening the trapping time.
[0069] Specifically, the third outlet is located on one side of the bottom wall of the hopper body 31. This material trapping device also includes a drive assembly. The hopper body 31 is located at the output end of the drive assembly, which is configured to drive the hopper body 31 to rotate so that the hopper body 31 is angled to the horizontal plane. When discharge is required, the drive assembly drives the hopper body 31 to rotate so that the hopper body 31 is angled to the horizontal plane. Understandably, at this time, the side with the third outlet is in a lower position, and the mud can flow more smoothly towards the third outlet under the assistance of gravity, reducing the residue of mud on the bottom wall of the hopper body 31.
[0070] In this embodiment, the drive assembly includes a rotating shaft and a drive member. The rotating shaft is disposed on the outer wall of the hopper body 31, and a first gear is disposed on the rotating shaft. A second gear is disposed on the output shaft of the drive member, and the second gear meshes with the first gear. The drive member can drive the rotating shaft to rotate. When the drive member is started, its output shaft rotates, driving the second gear to rotate. Since the second gear meshes with the first gear, the rotation of the second gear is transmitted to the first gear, thereby driving the rotating shaft to rotate. Through the meshing transmission of the first gear and the second gear, the power of the drive member can be efficiently and stably transmitted to the rotating shaft, meeting the rotational requirements of the hopper body 31.
[0071] In the specific implementation process, this material trapping device also includes a support frame. The outer walls of the opposite sides of the material trapping hopper 3 body are provided with rotating shafts. The material trapping hopper 3 body is rotatably connected to the support frame through the rotating shafts. The fixed end of the drive component can be fixed on the support frame, or an additional support base can be provided to fix the drive component. The second gear on the drive component meshes with the first gear on the rotating shaft so that the output shaft of the drive component rotates to drive the rotation, thereby driving the material trapping hopper 3 body to rotate.
[0072] Specifically, this material-trapping device also includes a second buffer hopper 5, which is connected to the material-trapping hopper 3. The second buffer hopper 5 has a fourth cavity 511 in which the clay material can be contained. As an intermediate link between the material-trapping hopper 3 and subsequent pressing and molding, the second buffer hopper 5 can temporarily store the clay material after it has been trapped. This allows the material-trapping hopper 3 to immediately begin trapping the next batch of clay after completing one batch, ensuring a continuous and stable supply of clay material to meet the needs of large-scale production.
[0073] Specifically, the second buffer hopper 5 includes a second buffer hopper body 1 and a fourth door plate 52. The second buffer hopper body 1 has a connected fourth cavity 511, a second inlet, and a fourth outlet. The fourth door plate 52 is used to open or close the fourth outlet. The mud material trapped in the trapping hopper 3 can enter the fourth cavity 511 through the second inlet. By opening or closing the fourth outlet through the fourth door plate 52, the release and storage of the mud material can be controlled.
[0074] In the specific implementation process, the body of the second buffer hopper 5 can be fixed to the trapping hopper 3 by methods commonly used in existing technologies such as welding, riveting or screw thread connection, and the second inlet of the body of the second buffer hopper 5 is connected to the third outlet of the trapping hopper 3.
[0075] In this embodiment, the switch of the fourth door panel 52 is automatically controlled pneumatically, reducing the frequency and difficulty of manual operation and lowering the labor intensity of operators. It should be noted that automatically controlling the switch of the fourth door panel 52 via activation to block or open the fourth outlet is a common technique in the prior art, and will not be elaborated upon in this embodiment.
[0076] Specifically, this material trapping device also includes a second vibrating element 72, which is disposed in the second buffer hopper 5. The second vibrating element 72 can cause the second buffer hopper 5 to vibrate. By driving the second buffer hopper 5 to vibrate through the second vibrating element 72, the mud material can be prevented from clumping or sticking to the wall, ensuring that the mud material in the second buffer hopper can be smoothly discharged.
[0077] In this embodiment, the second vibrating element 72 is a vibrating motor. A second motor base is provided near the second buffer hopper 5, the fixed end of the vibrating motor is fixed to the second motor base, and the output end of the vibrating motor is connected to the second buffer hopper 5. Specifically, the output end of the vibrating motor can be connected to the second buffer hopper 5 by welding, riveting, or screw thread connection, which are common methods in the prior art.
[0078] Specifically, this material-trapping device also includes a material transport vehicle 6, which is movable and capable of receiving mud. The movable nature of the material transport vehicle 6 allows for the rapid transfer of the trapped mud to the pressing production line, reducing time wasted during the transfer process and improving overall production efficiency.
[0079] Specifically, the material transport vehicle 6 includes a hopper with a connected top opening and a receiving cavity. Multiple rotating wheels are installed at the bottom of the hopper. When the mud material that has been trapped needs to be transferred, the material transport vehicle 6 is moved so that the top opening of the hopper is directly opposite the fourth outlet of the second buffer hopper 5. The fourth door plate 52 is controlled to open the fourth outlet so that the mud material in the second buffer hopper 5 is released into the receiving cavity of the hopper. When the hopper is full, the fourth door plate 52 is controlled to close the fourth outlet, and the material transport vehicle 6 is moved to the pressing production line.
[0080] It should be noted that the specific structure of the material transport vehicle 6 is not limited in this embodiment. It can be a material transfer vehicle commonly used in the prior art, which can be a manually pushed material transfer vehicle or an automated material transfer vehicle.
[0081] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A material holding device characterized by comprising: include: A mixer (1) is used to mix mud. The first buffer hopper (2) is connected to the mixer (1). The first buffer hopper (2) has a first cavity (211) in which the mud can be contained. The material trapping hopper (3) is connected to the first buffer hopper (2). The material trapping hopper (3) has a second cavity (311) in which mud can be contained. A material rake (33) is provided in the second cavity (311) for spreading the mud. A fan (4) is used to blow air into the second cavity (311).
2. The material trapping device according to claim 1, characterized in that, The mixer (1) includes: The mixer body (11) has a connected third cavity (111) and a first outlet; The first door panel (12) is used to open or close the first exit.
3. The material trapping device according to claim 1, characterized in that, The first buffer hopper (2) includes: The first buffer hopper body (21) has a first cavity (211), a first inlet and a second outlet connected together; The second door panel (22) is used to open or close the second exit.
4. The material trapping device according to claim 1, characterized in that, The trapping hopper (3) includes: The hopper body (31) has a connected second cavity (311) and a third outlet; The third door panel (32) is used to open or close the third exit.
5. The material trapping device according to claim 4, characterized in that, The third outlet is located on one side of the bottom wall of the hopper body (31), and the hopper device further includes: The drive assembly, wherein the hopper body (31) is disposed at the output end of the drive assembly, is configured to drive the hopper body (31) to rotate so that the hopper body (31) is set at an angle to the horizontal plane.
6. The material trapping device according to claim 5, characterized in that, The driving component includes: A rotating shaft is provided on the outer wall of the hopper body (31), and a first gear is provided on the rotating shaft; The driving component has a second gear on its output shaft, which meshes with the first gear, and the driving component can drive the rotating shaft to rotate.
7. The material trapping device according to any one of claims 1-6, characterized in that, The material trapping device further includes: The second buffer hopper (5) is connected to the trapping hopper (3). The second buffer hopper (5) has a fourth cavity (511) in which the mud can be contained.
8. The material trapping device according to claim 7, characterized in that, The second buffer hopper (5) includes: The second buffer hopper body (51) has a connected fourth cavity (511), a second inlet and a fourth outlet; The fourth door panel (52) is used to open or close the fourth exit.
9. The material trapping device according to any one of claims 1-6, characterized in that, The material trapping device also includes Material transport vehicle (6), which is movable and capable of receiving mud.
10. The material trapping device according to any one of claims 1-6, characterized in that, The material trapping device further includes: A first vibrating element (71) is disposed on the first buffer hopper (2), and the first vibrating element (71) can cause the first buffer hopper (2) to vibrate.