Mixing and conveying device

Abstract

This invention provides a mixing and conveying device. The mixing and conveying device includes a mixing tank (1), a connecting assembly, and a mixing assembly. The connecting assembly includes a first connecting flange (202), which is rotatably disposed within the mixing tank (1). The mixing assembly includes a second connecting flange (301), which is detachably connected to the first connecting flange (202). The mixing and conveying device proposed in this invention solves the problem that the mixing structure of existing mixing and conveying devices is difficult to disassemble, leading to difficult cleaning and maintenance, and consequently, low production efficiency and high costs.

Description

Technical Field

[0001] This utility model relates to the field of mixing and conveying technology, and more specifically, to a mixing and conveying device. Background Technology

[0002] Mixing and conveying systems play a crucial role in the chemical industry, especially in the production and processing of lithium carbonate. The preparation of lithium carbonate involves multiple chemical reactions and material handling steps, among which uniform mixing and stable conveying are key to ensuring product purity and production efficiency. Mixing and conveying systems can mix and transport materials, ensuring the safe and efficient transfer of materials during the lithium carbonate production process.

[0003] Material adhesion and scaling are common phenomena during lithium carbonate mixing. Regular cleaning and maintenance of the mixing and conveying device are crucial for maintaining equipment performance. However, most existing mixing and conveying devices use fixed mixing shafts and blades, making the mixing structure difficult to disassemble. This results in an extremely cumbersome manual cleaning process, requiring not only specialized tools and skills but also prolonged equipment downtime. This undoubtedly increases production costs and reduces production efficiency. Utility Model Content

[0004] The main purpose of this utility model is to provide a mixing and conveying device that can solve the problem that the mixing structure of the existing mixing and conveying device is difficult to disassemble, resulting in difficult cleaning and maintenance, which in turn leads to low production efficiency and high cost.

[0005] To achieve the above objectives, according to one aspect of the present invention, a mixing and conveying device is provided, including a mixing tank, a connecting assembly, and a mixing assembly. The connecting assembly includes a first connecting flange, which is rotatably disposed inside the mixing tank. The mixing assembly includes a second connecting flange, which is detachably connected to the first connecting flange.

[0006] Furthermore, the first connecting flange and the second connecting flange are connected by bolts.

[0007] Furthermore, the first connecting flange is provided with a slot, and the second connecting flange is provided with a locking structure, which can engage with the slot.

[0008] Furthermore, the mixing tank includes a tank body and a top cover. The top cover is placed on top of the tank body and is detachably connected to the tank body. The top cover is provided with a through hole. The connecting assembly also includes a transmission part, which is inserted into the through hole. A first connecting flange is provided at one end of the transmission part that extends into the tank body.

[0009] Furthermore, the mixing and conveying device also includes a first drive unit, which is mounted on the top cover and is drivenly connected to the transmission unit.

[0010] Furthermore, the mixing assembly also includes a stirring element, which is disposed on the second connecting flange.

[0011] Furthermore, the mixing assembly also includes a scraper, which is disposed on the side of the mixing component facing the inner wall of the mixing tank, and the scraper maintains a preset distance from the inner wall of the mixing tank.

[0012] Furthermore, the preset interval between the scraper and the inner wall of the mixing tank is 0mm to 8mm.

[0013] Furthermore, the stirring assembly also includes a third connecting part, which is disposed on the second connecting flange, and the stirring element is disposed on the third connecting part.

[0014] Furthermore, the mixing and conveying device also includes a discharge pipe, and a discharge port is provided at the bottom of the mixing tank. The discharge pipe is connected to the mixing tank through the discharge port.

[0015] Furthermore, a material conveying structure is provided inside the discharge pipe, and a second drive unit is provided at one end of the discharge pipe near the discharge port. The second drive unit is drivenly connected to the material conveying structure.

[0016] Furthermore, the material conveying structure includes an auger rod.

[0017] Applying the technical solution of this utility model, the mixing tank is the foundation of the entire device, used to contain materials such as lithium carbonate, and provides an installation base for the connecting components and the mixing components. The first connecting flange provides a connection base for the mixing components; the first connecting flange is rotatably mounted inside the mixing tank, ensuring that it can rotate under external force. The second connecting flange is part of the mixing components and is detachably connected to the first connecting flange. The mixing and conveying device proposed in this utility model, by setting detachably connected first and second connecting flanges, achieves rapid assembly and disassembly of the mixing components, thereby reducing disassembly difficulty, avoiding prolonged equipment downtime, reducing maintenance difficulty and costs, and improving overall production efficiency. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 A schematic diagram of the overall structure of the stirring and conveying device according to an embodiment of the present invention is shown;

[0020] Figure 2 An exploded view of the connecting assembly and the stirring assembly of the stirring and conveying device according to an embodiment of the present invention is shown;

[0021] Figure 3A cross-sectional view of the conveying structure of the mixing and conveying device according to an embodiment of the present invention is shown; and

[0022] Figure 4 An exploded view of the mixing tank and exhaust pipe of the mixing and conveying device according to an embodiment of the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 1. Mixing tank; 101. Tank body; 102. Top cover; 201. Transmission unit; 202. First connecting flange; 301. Second connecting flange; 302. Mixing component; 303. Scraper; 304. Third connecting part; 4. First drive unit; 5. Discharge pipe; 6. Conveying structure; 7. Second drive unit; 8. Feed pipe; 9. Exhaust pipe; 10. Control valve; 11. Filter unit; 12. Fastener; 13. Mounting part. Detailed Implementation

[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] See also Figures 1 to 4 As shown, this utility model provides a mixing and conveying device, which includes a mixing tank 1, a connecting assembly, and a mixing assembly. The connecting assembly includes a first connecting flange 202, which is rotatably disposed inside the mixing tank 1. The mixing assembly includes a second connecting flange 301, which is detachably connected to the first connecting flange 202.

[0027] In the above technical solution, the mixing tank 1 is the foundation of the entire device, used to contain materials such as lithium carbonate, and provides an installation base for the connecting components and the mixing components. The first connecting flange 202 provides a connection base for the mixing components. The first connecting flange 202 is rotatably mounted inside the mixing tank 1, ensuring that it can rotate under external force. The second connecting flange 301 is part of the mixing components and is detachably connected to the first connecting flange 202. The mixing and conveying device proposed in this utility model, by setting the detachably connected first connecting flange 202 and second connecting flange 301, achieves rapid assembly and disassembly of the mixing components, thereby reducing disassembly difficulty, avoiding prolonged equipment downtime, reducing maintenance difficulty and cost, and improving overall production efficiency.

[0028] In one embodiment of the present invention, the first connecting flange 202 is provided with bolt holes, and a plurality of bolt holes are distributed at intervals along the circumference of the first connecting flange 202. The second connecting flange 301 is provided with bolt holes corresponding to the first connecting flange 202. The first connecting flange 202 and the second connecting flange 301 are connected by bolts.

[0029] In the above technical solution, the first connecting flange 202 and the second connecting flange 301 are connected by multiple bolts spaced apart along the circumference of the connecting flanges. This effectively disperses the torque and force transmitted from the connecting assembly to the mixing assembly during the operation of the mixing device, significantly improving the connection strength between the connecting assembly and the mixing assembly, thereby enhancing the stability of the device. The bolted connection between the first connecting flange 202 and the second connecting flange 301 makes assembly and disassembly simple and quick, ensuring that operators can complete the assembly and disassembly without the use of special tools or techniques when cleaning, maintaining, or replacing parts, greatly saving maintenance time and costs and improving production efficiency.

[0030] In one embodiment of the present invention (not shown in the figure), the first connecting flange 202 is provided with a slot, and the second connecting flange 301 is provided with a locking structure, which can engage with the slot.

[0031] In the above technical solution, the first connecting flange 202 and the second connecting flange 301 are detachably connected through the snap-fit ​​mechanism and the slot. After the first connecting flange 202 and the second connecting flange 301 are assembled, rotating or pressing the snap-fit ​​mechanism engages it with the slot on the first connecting flange 202, thereby connecting the first connecting flange 202 and the second connecting flange 301. By setting up the snap-fit ​​mechanism and slot, the assembly and disassembly of the first connecting flange 202 and the second connecting flange 301 become simple and quick, ensuring that operators can complete the assembly and disassembly without the use of special tools or techniques when cleaning, maintaining, or replacing parts, greatly saving maintenance time and costs and improving production efficiency.

[0032] In one embodiment of the present invention, the mixing tank 1 includes a tank body 101 and a top cover 102. The top cover 102 is placed on the top of the tank body 101 and is detachably connected to the tank body 101. The top cover 102 is provided with a through hole. The connecting assembly also includes a transmission part 201, which is inserted into the through hole. A first connecting flange 202 is provided at one end of the transmission part 201 that extends into the tank body 101.

[0033] In the above technical solution, the tank body 101 is the main body of the entire mixing tank 1, used to contain the materials to be processed, as well as connecting components, mixing components, and other structures. The top cover 102 mainly functions to seal the tank body and also provides a platform for installing the mixing components and connecting components. The through hole provides a channel for the transmission part 201 to pass through. The first connecting flange 202 is located at the end of the transmission part 201 that extends into the tank body 101 and is fixedly connected to the transmission part 201. This allows the driving force generated by the drive device located outside the mixing tank 1 to be transmitted to the mixing components inside the mixing tank 1 through the transmission part 201, causing the transmission part 201 to drive the first connecting flange 202 and the mixing element 302 on it to rotate together, thereby achieving the mixing effect of the materials inside the mixing tank 1. The through hole is located at the center of the top cover 102. When the stirring device is running, the through hole located in the center can ensure that the transmission part 201 is located on the central axis of the stirring tank 1, and avoid the stirring component 302 connected to the transmission part 201 from colliding with the tank body 101 due to the axial offset during the rotation and stirring process. This reduces the vibration and wear of the stirring component 302, thereby maintaining the structural stability and safety of the entire stirring device.

[0034] In one embodiment of this utility model, a rotational sealing structure is provided between the through hole and the transmission part 201.

[0035] In the above technical solution, by setting a rotating sealing structure such as a sealing ring or a labyrinth structure between the through hole and the transmission part 201, the material is prevented from leaking through the gap between the through hole and the transmission part during the mixing process, thereby preventing material waste and environmental pollution, and ensuring that the health and safety of operators and the environment are not threatened by leaked materials.

[0036] In one embodiment of the present invention, the stirring and conveying device further includes a first driving part 4, which is disposed on the top cover 102 and is drivenly connected to the transmission part 201.

[0037] In the above technical solution, the first drive unit 4 typically includes a power device such as a motor, which provides power to the stirring structure. The first drive unit 4 is connected to the transmission unit 201 via a transmission device such as a shaft or chain, converting electrical energy into mechanical energy to drive the stirring structure to rotate. Placing the first drive unit 4 on the top cover 102 makes the design of the mixing tank more compact, avoiding the need to install the drive equipment on the side wall or bottom of the tank 101 and occupying additional space, thus improving space utilization. At the same time, the first drive unit 4, located on the top cover 102, is in a more conspicuous position, facilitating monitoring of its operation by operators. Furthermore, the space around the first drive unit 4 is more ample, making maintenance of the first drive unit 4 easier.

[0038] In one embodiment of the present invention, the stirring assembly further includes a stirring element 302, which is disposed on the second connecting flange 301.

[0039] In the above technical solution, the agitator 302 is typically composed of a rotating shaft and agitator blades, paddles, or spirals. The agitator 302 is used to directly contact the material in the tank and mix the material evenly through mechanical motion. The agitator 302, the second connecting flange 301, and the first connecting flange 202 are mounted on the first drive unit 4 via the transmission unit 201. The first drive unit 4 is mounted on the top cover 102. The top cover 102 and the first drive unit 4 together support the weight of the agitator 302, the second connecting flange 301, and the first connecting flange 202.

[0040] In one embodiment of the present invention, the stirring assembly further includes a scraper 303, which is disposed on the side of the stirring member 302 facing the inner wall of the stirring tank 1, and the scraper 303 maintains a preset distance from the inner wall of the stirring tank 1.

[0041] In the above technical solution, during the mixing process, especially when handling viscous materials such as lithium carbonate, material tends to adhere to the inner wall of the mixing tank 1. By installing a scraper 303, the material adhering to the inner wall can be scraped off periodically or continuously, preventing the formation of a difficult-to-clean adhesive layer, thereby reducing maintenance costs and cleaning time, and improving the continuous operation capability of the equipment. When the scraper 303 is in contact with the inner wall of the mixing tank 1, it has a good scraping effect on the material on the inner wall. When the scraper 303 maintains a certain distance from the inner wall of the mixing tank 1, the scraper will not directly contact the tank wall during operation, which can prevent scraper wear or damage to the tank wall while ensuring that the scraper can effectively remove the material adhering to the inner wall.

[0042] In one embodiment of this utility model, the preset interval between the scraper 303 and the inner wall of the mixing tank 1 is 0mm to 8mm.

[0043] In the above technical solution, when the preset distance between the scraper 303 and the inner wall of the mixing tank 1 is 0mm, the scraper 303 directly contacts the inner wall of the mixing tank 1, and the scraper 303 has a good scraping effect on the material on the inner wall of the mixing tank 1. When the preset distance between the scraper 303 and the inner wall of the mixing tank 1 is greater than 0mm and less than or equal to 8mm, it can be ensured that the scraper can effectively scrape the material on the tank wall when rotating, preventing the material from accumulating on the tank wall. This distance is large enough to allow the scraper to approach the tank wall, but not to make direct contact, thus ensuring the scraping effect while avoiding mechanical wear.

[0044] In one embodiment of the present invention, the stirring assembly further includes a third connecting part 304, which is disposed on the second connecting flange 301, and the stirring element 302 is disposed on the third connecting part 304.

[0045] In the above technical solution, the main function of the third connecting part 304 is to connect the stirring component 302 to the second connecting flange 301, and to further support and fix the stirring component 302. Through the arrangement of the second connecting flange 301 and the third connecting part 304, the stirring assembly achieves effective connection with the transmission part 201, ensuring smooth power transmission and stable operation of the stirring component 302.

[0046] In one embodiment of this utility model, the third connecting part 304 is fixedly connected to the second connecting flange 301.

[0047] In the above solution, the third connecting part 304 and the second connecting flange 301 can be fixedly connected to form a whole by welding or integral molding, thereby providing better connection strength and stability between the third connecting part 304 and the second connecting flange 301, ensuring that the mixing component will not loosen when rotating at high speed, and significantly improving the operational stability and reliability of the equipment.

[0048] In one embodiment of this utility model, the third connecting part 304 is detachably connected to the second connecting flange 301.

[0049] In the above scheme, the third connecting part 304 and the second connecting flange 301 can be detachably connected by means of bolts, clamps, quick couplings or pins. The detachable connection between the third connecting part 304 and the second connecting flange 301 makes the disassembly and replacement of the mixing component 302 simple and quick, facilitates equipment maintenance and cleaning, and reduces maintenance costs and downtime.

[0050] In one embodiment of the present invention, the mixing and conveying device further includes a discharge pipe 5, and the bottom of the mixing tank 1 is provided with a discharge port, and the discharge pipe 5 is connected to the mixing tank 1 through the discharge port.

[0051] In the above technical solution, the discharge pipe 5 is used to transport the material at the bottom of the mixing tank 1 to downstream equipment, and the discharge port is used to connect the mixing tank 1 and the discharge pipe 5, so that the material at the bottom of the mixing tank 1 can enter the discharge pipe 5 for discharge. The discharge pipe 5 is connected to the bottom of the mixing tank 1 through the discharge port, ensuring that the discharge pipe 5 can directly receive the material at the bottom of the mixing tank 1, avoiding the retention of material inside the tank, and improving the discharge speed and efficiency of the material.

[0052] In one embodiment of the present invention, a material conveying structure 6 is provided inside the discharge pipe 5, and a second driving part 7 is provided at one end of the discharge pipe 5 near the discharge port, and the second driving part 7 is drivenly connected to the material conveying structure 6.

[0053] In the above technical solution, the material conveying structure 6 typically refers to a mechanical structure for conveying materials, such as a screw conveyor or scraper conveyor, installed inside the discharge pipe 5. The main function of the material conveying structure 6 is, under the drive of the second drive unit 7, to uniformly and continuously convey the evenly mixed material in the mixing tank 1 out of the tank 101, preventing blockage or uneven discharge of the discharge pipe 5 during the discharge process, thereby ensuring the continuity and stability of the entire production process. The second drive unit 7, using a motor or other drive device, provides power to the material conveying structure 6, driving it to move within the discharge pipe 5 to achieve material conveying. The second drive unit 7 ensures the controllability of the material conveying process, allowing the material conveying structure 6 to adjust its conveying speed according to production needs, thereby more precisely controlling the discharge volume and improving production efficiency.

[0054] In one embodiment of this utility model, the material conveying structure 6 includes an auger rod.

[0055] In the above technical solution, the auger, or screw conveyor, propels the material axially through its spiral-shaped blades as they rotate, thereby achieving uniform material conveying.

[0056] In one embodiment of this utility model, a fastener 12 is provided on the discharge pipe, and the fastener 12 is sleeved on the outside of the discharge pipe 5.

[0057] In the above technical solution, the main function of the fastener 12 is to fix the discharge pipe 5, prevent the discharge pipe 5 from changing position due to vibration, external force or gravity, and avoid problems such as poor material conveying or material leakage caused by misalignment of the discharge pipe 5.

[0058] In one embodiment of this utility model, a feed pipe 8 is provided on the top cover 102, and the feed pipe 8 is connected to the mixing tank 1.

[0059] In the above technical solution, the feed pipe 8 provides a channel for materials to enter the mixing tank 1. By installing the feed pipe 8 on the top cover 102, materials can enter the mixing tank 1 directly from the top, avoiding material leakage or feeding difficulties that may occur when feeding from the side or bottom. The feed pipe 8 also includes valves or other flow control devices to ensure that materials are added uniformly in the required proportion, improving product quality.

[0060] In one embodiment of this utility model, an exhaust pipe 9 is provided on the tank body 101, and the exhaust pipe 9 is connected to the mixing tank 1.

[0061] In the above technical solution, gas may be generated during the mixing and stirring of materials, especially lithium carbonate materials. The exhaust pipe 9 is used to discharge the gas generated during the mixing and stirring process to the outside, so that the gas pressure inside the tank is kept at a safe and stable level, and to prevent the tank body 101 from expanding or deforming due to excessive gas pressure.

[0062] In one embodiment of this utility model, a control valve 10 is provided on the exhaust pipe 9.

[0063] In the above technical solution, the control valve 10 is used to precisely control the opening and closing of the exhaust pipe 9, as well as the degree to which the exhaust pipe 9 is open. By adjusting the control valve 10, the air pressure inside the mixing tank 1 can be effectively managed, ensuring that the air pressure inside the tank is maintained at a suitable level during the mixing process, and preventing equipment damage caused by excessive air pressure inside the mixing tank 1 leading to expansion or deformation of the tank body 101.

[0064] In one embodiment of the present invention, an installation part 13 is provided on the inner side wall of the exhaust pipe 9, and a filter part 11 is provided on the inner side wall of the installation part 13.

[0065] In the above technical solution, the mounting part 13 is disposed inside the exhaust pipe 9 and is used to support and fix the filter part 11. The mounting part 13 ensures that the filter part 11 can be stably installed in a specific position inside the exhaust pipe 9, preventing the filter part 11 from being displaced or damaged due to vibration or airflow impact during operation, thus ensuring the stability and continuity of the filtration effect. The filter part 11 is used to filter dust, impurities, or fine particles mixed in with the gas discharged from inside the tank 101, preventing lithium carbonate powder from being discharged to the outside with the gas and causing environmental pollution, and protecting the health and safety of operators.

[0066] In one embodiment of this utility model, the filtration unit 11 includes a metal filter screen, a bag filter, or an electrostatic filter.

[0067] In the above technical solutions, metal filter screens are typically made of materials such as stainless steel, copper, or aluminum. The pore size of the metal filter screen can be customized to intercept lithium carbonate particles of different sizes. Metal filter screens have the advantages of corrosion resistance, high temperature resistance, high strength, and suitability for long-term operation and frequent cleaning. Bag filters are made of high-density fabric and usually have a multi-layer structure to capture finer particles. Electrostatic filters utilize the principle of electrostatic adsorption, capturing passing dust particles through a filter medium with a charged charge. This type of filter has high filtration efficiency for electrostatically charged lithium carbonate dust.

[0068] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: The mixing tank 1 is the foundation of the entire device, used to contain materials such as lithium carbonate, and provides an installation foundation for the connecting components and the mixing components. The first connecting flange 202 is used to provide a connection foundation for the mixing components. The first connecting flange 202 is rotatably installed inside the mixing tank 1 to ensure that the first connecting flange 202 can rotate under external force. The second connecting flange 301 is part of the mixing components and is detachably connected to the first connecting flange 202. The mixing and conveying device proposed by this utility model, by setting the detachably connected first connecting flange 202 and second connecting flange 301, realizes the rapid assembly and disassembly of the mixing components, thereby reducing the difficulty of disassembly, avoiding long-term equipment downtime, reducing maintenance difficulty and cost, and improving overall production efficiency.

[0069] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0071] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mixing and conveying device, characterized in that, The system includes a mixing tank (1), a connecting assembly, and a stirring assembly. The connecting assembly includes a first connecting flange (202) which is rotatably disposed inside the mixing tank (1). The stirring assembly includes a second connecting flange (301) which is detachably connected to the first connecting flange (202).

2. The mixing and conveying device according to claim 1, characterized in that, The first connecting flange (202) and the second connecting flange (301) are connected by bolts; and / or, the first connecting flange (202) is provided with a slot, and the second connecting flange (301) is provided with a locking structure, the locking structure being able to engage with the slot.

3. The mixing and conveying device according to claim 1, characterized in that, The mixing tank (1) includes a tank body (101) and a top cover (102). The top cover (102) covers the top of the tank body (101) and is detachably connected to the tank body (101). The top cover (102) is provided with a through hole. The connecting assembly also includes a transmission part (201). The transmission part (201) passes through the through hole. The first connecting flange (202) is provided at one end of the transmission part (201) that extends into the tank body (101).

4. The mixing and conveying device according to claim 3, characterized in that, The stirring and conveying device further includes a first driving unit (4), which is disposed on the top cover (102) and is drivenly connected to the transmission unit (201).

5. The mixing and conveying device according to claim 1, characterized in that, The stirring assembly further includes a stirring element (302), which is disposed on the second connecting flange (301).

6. The mixing and conveying device according to claim 5, characterized in that, The stirring assembly also includes a scraper (303), which is disposed on the side of the stirring component (302) facing the inner wall of the stirring tank (1), and the scraper (303) maintains a preset distance from the inner wall of the stirring tank (1).

7. The mixing and conveying device according to claim 6, characterized in that, The preset interval between the scraper (303) and the inner wall of the mixing tank (1) is 0mm to 8mm.

8. The mixing and conveying device according to claim 5, characterized in that, The stirring assembly further includes a third connecting part (304), which is disposed on the second connecting flange (301), and the stirring element (302) is disposed on the third connecting part (304).

9. The mixing and conveying device according to claim 1, characterized in that, The mixing and conveying device also includes a discharge pipe (5), and the bottom of the mixing tank (1) is provided with a discharge port. The discharge pipe (5) is connected to the mixing tank (1) through the discharge port.

10. The mixing and conveying device according to claim 9, characterized in that, The discharge pipe (5) is provided with a material conveying structure (6), and a second driving part (7) is provided at one end of the discharge pipe (5) near the discharge port. The second driving part (7) is driven to connect with the material conveying structure (6); and / or, the material conveying structure (6) includes an auger rod.

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