Mixing device

Abstract

The utility model provides a material mixing device, which comprises a material mixing cylinder, a material mixing shaft, a material mixing shaft and a material mixing shaft, the material mixing cylinder extends along the transverse direction and is rotatably arranged, the material mixing cylinder is provided with a material mixing cavity, and the material mixing cavity is provided with an inlet and an outlet; the first feeding part is arranged at the inlet and is used for conveying solid materials into the material mixing cavity; the second feeding part is arranged at the inlet and is used for conveying a liquid material into the mixing cavity; and the material accumulation structure is arranged close to the inlet and enables the solid material and the liquid material to form a material accumulation layer at the material accumulation structure, the material accumulation structure comprises a plurality of material accumulation blocks, and the plurality of material accumulation blocks are arranged on the inner side wall of the material mixing barrel and are arranged at intervals in the circumferential direction of the material mixing barrel. According to the technical scheme provided by the invention, the problem that the service life of the mixing barrel in the related art is relatively short can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a mixing device. Background Art

[0002] As my country places increasing emphasis on reducing carbon emissions, the number of new energy vehicles (NEVs) is rapidly increasing. Power batteries, the core of these vehicles, are also rapidly increasing in number. The lifespan of power batteries in NEVs is generally around eight years, with some facing end-of-life. How to properly dispose of spent power batteries and how to safely and environmentally recycle them has become a topic of widespread concern within the industry.

[0003] Generally speaking, acidification roasting lithium extraction technology is a method of extracting lithium from waste power batteries. This technology mainly reacts the black powder formed by waste power batteries with a high lithium content with an acidic substance (such as sulfuric acid) to convert the lithium into a water-soluble lithium salt, and then extracts and separates the lithium. Since the black powder and the acidic substance are mixed in the mixing barrel, the acidic substance may gradually corrode the mixing barrel, thereby reducing the service life of the mixing barrel. Therefore, there is a problem of low service life of the mixing barrel in the relevant field. Utility Model Content

[0004] The main purpose of the utility model is to provide a mixing device to solve the problem of short service life of a mixing barrel in the related art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a mixing device, including: a mixing barrel, which extends in the transverse direction and is rotatably arranged, and the mixing barrel has a mixing chamber, and the mixing chamber has an inlet and an outlet; a first feeding part, which is arranged at the inlet and is used to convey solid material into the mixing chamber; a second feeding part, which is arranged at the inlet and is used to convey liquid material into the mixing chamber; a material accumulation structure, which is arranged close to the inlet and allows solid material and liquid material to form an accumulation layer at the material accumulation structure, and the material accumulation structure includes a plurality of material accumulation blocks, and the plurality of material accumulation blocks are arranged on the inner side wall of the mixing barrel and are arranged at intervals along the circumferential direction of the mixing barrel.

[0006] Furthermore, a plurality of material accumulation blocks arranged at intervals along the circumferential direction of the mixing cylinder form a material accumulation unit. The material accumulation structure includes a plurality of material accumulation units, and the plurality of material accumulation units are arranged at intervals along the axial direction of the mixing cylinder.

[0007] Furthermore, the second feeding portion is provided with a plurality of discharge ports, and the projections of the plurality of discharge ports on the preset plane all completely fall within the projection of the material accumulation structure on the preset plane, and the preset plane is a horizontal plane passing through the axis of the mixing barrel.

[0008] Furthermore, in each material accumulation unit, the interval between two adjacent material accumulation blocks in the circumferential direction of the mixing drum is between 30 cm and 60 cm; and / or the interval between two adjacent material accumulation units in the axial direction of the mixing drum is between 30 cm and 60 cm.

[0009] Furthermore, the height of the material block is between 2 cm and 4 cm.

[0010] Furthermore, the mixing device further comprises a scraper arranged in the mixing barrel, and the scraper is used to control the thickness of the accumulated material layer.

[0011] Further, the scraper includes a connecting portion and a blade portion, the first end of the connecting portion is connected to the mixing barrel, and the blade portion is connected to the second end of the connecting portion, wherein the two ends of the blade portion are respectively flush with or protrude from the two ends of the material accumulation structure in the axial direction of the mixing barrel; and / or, the connecting portion includes a first rod, a second rod and a reinforcing rod, the first rod and the second rod are arranged at an angle, the first end of the first rod forms the first end of the connecting portion, the second end of the first rod is connected to the first end of the second rod, the second end of the second rod forms the second end of the connecting portion, and the reinforcing rod is connected between the first end of the first rod and the second end of the second rod.

[0012] Furthermore, the distance between the blade portion and the top wall of the material accumulation block is between 3 cm and 5 cm.

[0013] Furthermore, the mixing device also includes a beating hammer arranged on the outer side wall of the mixing barrel. The beating hammer is hingedly connected to the mixing barrel. When the mixing barrel rotates, the beating hammer is driven to swing and beat the outer side wall of the mixing barrel.

[0014] Furthermore, the mixing device also includes a material introduction structure arranged in the mixing barrel, the material introduction structure is located between the material accumulation structure and the inlet, the material introduction structure includes a plurality of material introduction plates arranged at intervals along the circumferential direction of the mixing barrel, and in the axial direction of the mixing barrel, each material introduction plate extends in a direction away from the rotation direction of the mixing barrel.

[0015] According to the technical solution of this embodiment, the mixing barrel has a mixing chamber, in which solid materials and liquid materials are located, and the mixing barrel can rotate so that the solid materials and liquid materials are fully mixed; the first feeding part is used to transport the solid materials into the mixing chamber; the second feeding part is used to transport the liquid materials into the mixing chamber; the accumulation structure is arranged near the inlet, and the accumulation structure includes a plurality of accumulation blocks, in which the solid materials and liquid materials are mixed at the accumulation structure and accumulated on the accumulation blocks, thereby forming an accumulation layer at the accumulation structure, and the plurality of accumulation blocks are arranged at intervals along the circumferential direction of the mixing barrel, so that the accumulation layer is formed on the inner side wall of the mixing barrel along the circumferential direction of the mixing barrel, and then the accumulation layer can form a protection for the mixing barrel along the circumferential direction of the mixing barrel, thereby extending the service life of the mixing barrel. Therefore, the technical solution of this embodiment can effectively solve the problem of low service life of the mixing barrel in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic cross-sectional view of a partial structure of an embodiment of a mixing device according to the present utility model is shown;

[0018] Figure 2 Shown Figure 1 A schematic cross-sectional view of a partial structure of a mixing device;

[0019] Figure 3 Shown Figure 1 A schematic top view of a mixing device;

[0020] Figure 4 Shown Figure 1 Schematic diagram of the structure of the beating hammer of the mixing device.

[0021] The above drawings include the following reference numerals:

[0022] 10. Mixing cylinder; 11. Mixing chamber;

[0023] 20. First feeding section;

[0024] 30. Second feeding section; 31. First feeding pipe; 311. First conveying section; 312. First discharging section; 32. Second feeding pipe; 321. Second conveying section; 322. Second discharging section;

[0025] 40. Material guide structure; 41. Material guide plate;

[0026] 50. Material accumulation structure; 501. Material accumulation unit; 51. Material accumulation block;

[0027] 70. Scraper; 71. Connecting portion; 711. First rod; 712. Second rod; 713. Reinforcement rod; 72. Blade portion;

[0028] 80. Hammer. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0032] like Figure 1As shown, the present application provides a mixing device, and an embodiment of the mixing device of the present application includes: a mixing barrel 10, a first feeding part 20, a second feeding part 30, and a material accumulation structure 50; the mixing barrel 10 extends in the transverse direction and is rotatably arranged, the mixing barrel 10 has a mixing chamber 11, and the mixing chamber 11 has an inlet and an outlet; the first feeding part 20 is arranged at the inlet and is used to convey solid material into the mixing chamber 11; the second feeding part 30 is arranged at the inlet and is used to convey liquid material into the mixing chamber 11; the material accumulation structure 50 is arranged close to the inlet and allows the solid material and the liquid material to form an accumulation layer at the material accumulation structure 50, and the material accumulation structure 50 includes a plurality of material accumulation blocks 51, and the plurality of material accumulation blocks 51 are arranged on the inner side wall of the mixing barrel 10 and are arranged at intervals along the circumferential direction of the mixing barrel 10.

[0033] Applying the technical solution of this embodiment, the mixing barrel 10 has a mixing chamber 11, and the solid material and the liquid material are located in the mixing chamber 11. The mixing barrel 10 can rotate so that the solid material and the liquid material are fully mixed; the first feeding part 20 is used to transport the solid material into the mixing chamber 11; the second feeding part 30 is used to transport the liquid material into the mixing chamber 11; the accumulation structure 50 is arranged near the inlet, and the accumulation structure 50 includes a plurality of accumulation blocks 51. The solid material and the liquid material are mixed at the accumulation structure 50 and accumulated on the accumulation blocks 51, thereby forming an accumulation layer at the accumulation structure 50. The plurality of accumulation blocks 51 are arranged at intervals along the circumferential direction of the mixing barrel 10, so that the accumulation layer is formed on the inner side wall of the mixing barrel 10 along the circumferential direction of the mixing barrel 10, and then the accumulation layer can form a protection for the mixing barrel 10 along the circumferential direction of the mixing barrel 10, thereby extending the service life of the mixing barrel. Therefore, the technical solution of this embodiment can effectively solve the problem of short service life of the mixing barrel in the related art.

[0034] It should be noted that in this embodiment, the solid material is battery black powder, and the liquid material is an acidic substance, such as sulfuric acid. Since the mixing barrel 10 is made of metal, direct contact between sulfuric acid and the mixing barrel 10 will corrode the mixing barrel 10. After the battery black powder and sulfuric acid are mixed, a reaction will occur. The formed mixed material has a certain viscosity and can adhere to the accumulation structure 50 to form an accumulation layer. The accumulation layer separates the sulfuric acid from the mixing barrel 10 to protect the mixing barrel 10.

[0035] Furthermore, in this embodiment, a plurality of material accumulation blocks 51 spaced apart along the circumferential direction of the mixing barrel 10 form a material accumulation unit 501. The material accumulation structure 50 includes a plurality of material accumulation units 501, and the plurality of material accumulation units 501 are spaced apart along the axial direction of the mixing barrel 10. Specifically, because the plurality of material accumulation units 501 are spaced apart along the axial direction of the mixing barrel 10, the material accumulation layer can also extend along the axial direction of the mixing barrel 10, thereby expanding the protective range of the material accumulation layer and further improving the protective effect of the material accumulation layer on the mixing barrel 10.

[0036] like Figure 1 As shown, the second feed portion 30 is provided with a plurality of discharge ports, and the projections of the plurality of discharge ports on a preset plane all completely fall within the projection of the material accumulation structure 50 on the preset plane. The preset plane is a horizontal plane passing through the axis of the mixing barrel 10. Specifically, in this embodiment, the second feed portion 30 includes a first feed pipe 31 and a second feed pipe 32. The first feed pipe 31 includes a first discharge section 312 disposed away from the inlet, and the second feed pipe 32 includes a second discharge section 322 disposed away from the inlet. A plurality of discharge ports are formed on the first discharge section 312 and the second discharge section 322, and liquid material enters the mixing chamber 11 through the plurality of discharge ports. The projections of the plurality of discharge ports on the preset plane all completely fall within the projection of the material accumulation structure 50 on the preset plane, so that the liquid material can fall into the range of the material accumulation layer after being discharged from the discharge ports without directly contacting the mixing barrel 10, thereby effectively protecting the mixing barrel 10.

[0037] In addition, if Figure 1 As shown, the mixing device also includes a material introduction structure 40 arranged in the mixing barrel 10, and the material introduction structure 40 is located between the material accumulation structure 50 and the inlet. The material introduction structure 40 includes a plurality of material introduction plates 41 arranged at intervals along the circumferential direction of the mixing barrel 10. In the axial direction of the mixing barrel 10, each material introduction plate 41 extends in a direction away from the rotation direction of the mixing barrel 10. Specifically, the first feed pipe 31 also includes a first conveying section 311 arranged between the first discharge section 312 and the inlet, and the second feed pipe 32 also includes a second conveying section 321 arranged between the second discharge section 322 and the inlet. The projections of the first conveying section 311 and the second conveying section 321 on the preset plane fall within the projection of the guide structure 40 on the preset plane, so that the liquid material will not fall into the range of the guide structure 40, thereby protecting the guide structure 40 and the part of the mixing barrel 10 corresponding to the guide structure 40; the guide structure 40 can guide the solid material conveyed from the first feed part 20 to the mixing chamber 11, so that the solid material can move smoothly toward the outlet direction. Specifically, in the axial direction of the mixing barrel 10, each guide plate 41 extends in a direction away from the rotation direction of the mixing barrel 10, so that the guide plate 41 can form a steeper guiding slope. As the mixing barrel 10 rotates, the solid material is guided to the inside of the mixing chamber 11 along the guiding slope.

[0038] Furthermore, in this embodiment, the spacing between two adjacent material accumulation blocks 51 in each material accumulation unit 501 is between 30 cm and 60 cm in the circumferential direction of the mixing drum 10, and the spacing between two adjacent material accumulation units 501 in the axial direction of the mixing drum 10 is between 30 cm and 60 cm. This arrangement ensures that the material accumulation layer formed in the material accumulation structure 50 forms a continuous layered structure, avoiding discontinuous material accumulation layers, thereby providing more comprehensive and effective protection for the mixing drum 10.

[0039] Furthermore, in this embodiment, the height of the material accumulation block 51 is between 2 cm and 4 cm. Specifically, the material accumulation block 51 is a rectangular parallelepiped structure. The height of the material accumulation block 51 is between 2 cm and 4 cm, which prevents the thickness of the material accumulation layer from being too high. This not only protects the mixing barrel 10 but also ensures that the portion of the mixing chamber 11 corresponding to the material accumulation layer has sufficient space to accommodate the solid and liquid materials, thereby ensuring that they are fully mixed.

[0040] like Figure 2 As shown, the mixing device further includes a scraper 70 disposed within the mixing barrel 10. The scraper 70 is used to control the thickness of the accumulated material layer. Specifically, the scraper 70 is fixedly disposed within the mixing chamber 11. As the accumulated material layer becomes thicker, as the mixing barrel 10 rotates, the excessively thick accumulated material layer comes into contact with the scraper 70, causing the excessively thick accumulated material layer to be scraped off by the scraper 70. This enables the scraper 70 to control the thickness of the accumulated material layer, thereby ensuring that the mixing chamber 11 has sufficient space to accommodate and mix the solid and liquid materials.

[0041] like Figure 2 As shown, the scraper 70 includes a connecting portion 71 and a blade portion 72. The first end of the connecting portion 71 is connected to the mixing drum 10, and the blade portion 72 is connected to the second end of the connecting portion 71. The two ends of the blade portion 72 are flush with or protrude from the two ends of the material accumulation structure 50 in the axial direction of the mixing drum 10. Specifically, the mixing drum 10 includes a rotating drum portion and an inlet end plate and an outlet end plate disposed at both ends of the rotating drum portion. The first end of the connecting portion 71 is connected to the inlet end plate. The blade portion 72 is a strip-shaped structure extending in the transverse direction. The two ends of the blade portion 72 are flush with or protrude from the two ends of the material accumulation structure 50 in the axial direction of the mixing drum 10. This allows any accumulated material layer formed on the material accumulation structure 50 to contact the blade portion 72, thereby scraping off any excessively thick accumulated material layer. In other embodiments not shown in the figures, the blade portion may also be cross-shaped, Z-shaped, L-shaped, or "M-shaped."

[0042] like Figure 2As shown, the connecting portion 71 includes a first rod 711, a second rod 712, and a reinforcing rod 713. The first rod 711 and the second rod 712 are arranged at an angle. The first end of the first rod 711 forms the first end of the connecting portion 71, the second end of the first rod 711 is connected to the first end of the second rod 712, and the second end of the second rod 712 forms the second end of the connecting portion 71. The reinforcing rod 713 is connected between the first end of the first rod 711 and the second end of the second rod 712. Specifically, the first rod 711, the second rod 712, and the reinforcing rod 713 are connected end to end to form a triangular structure. The triangular structure has greater stability and structural strength, so that when the scraper 70 is scraping off an excessively thick layer of accumulated material, the connecting portion 71 will not be easily damaged by the force applied.

[0043] Furthermore, in this embodiment, the distance between the blade portion 72 and the top wall of the material block 51 is between 3 cm and 5 cm. This arrangement ensures that the thickness of the material layer formed at the material accumulation structure 50 does not exceed 5 cm plus the thickness of the material block 51, thereby keeping the thickness of the material layer within a reasonable range.

[0044] like Figure 3 as well as Figure 4 As shown, the mixing device further includes a striking hammer 80 disposed on the outer wall of the mixing barrel 10. The striking hammer 80 is hingedly connected to the mixing barrel 10. When the mixing barrel 10 rotates, the striking hammer 80 is driven to swing and strike the outer wall of the mixing barrel 10. Specifically, the striking hammer 80 is disposed on the outer wall of the mixing barrel 10 corresponding to the material accumulation structure 50. The striking hammer 80 includes a mounting seat and a hammer head. The mounting seat is welded to the outer wall of the mixing barrel 10, and the hammer head is hingedly connected to the mounting seat. As the mixing barrel 10 rotates, under the action of centrifugal force and gravity, the striking hammer 80 will swing and strike the outer wall of the mixing barrel 10, thereby vibrating the material accumulation layer on the inner wall of the mixing barrel 10. If the material accumulation layer is too thick, the excessively thick portion will be separated from the material accumulation layer under the striking of the striking hammer 80, thereby effectively controlling the thickness of the material accumulation layer.

[0045] In this embodiment, the mixing drum 10 is tilted relative to the horizontal, with the angle between the axis of the mixing drum 10 and the horizontal being between 1° and 3°. The mixing drum 10 itself is tilted at a predetermined angle so that the mixed material gradually moves along this slope from the inlet to the outlet, offering the advantage of a simple structure. Preferably, the angle between the axis of the mixing drum 10 and the horizontal can be 1°, 2°, or 3°. Furthermore, in other embodiments, the mixing device may also include a propeller screw within the mixing chamber to convey the mixed material.

[0046] In addition, in this embodiment, a heat-insulating layer is provided on the outside of the mixing barrel 10 , and the heat-insulating layer can prevent the mist formed by the liquid material from condensing due to the low temperature during the mixing process.

[0047] In addition, in this embodiment, the mixing barrel 10 is further provided with an observation port, which facilitates the staff to observe the mixing chamber 11 when the machine is stopped.

[0048] In this embodiment, the mixing drum 10 is a circular drum. In addition, in other embodiments, the mixing drum may also be a multi-angle drum such as a pentagonal drum or a hexagonal drum.

[0049] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0050] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0051] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A mixing device, characterized in that: include: A mixing barrel (10), the mixing barrel (10) extending in a transverse direction and being rotatably arranged, the mixing barrel (10) having a mixing chamber (11), the mixing chamber (11) having an inlet and an outlet; A first feeding portion (20), arranged at the inlet and used for conveying solid materials into the mixing chamber (11); A second feeding portion (30) is arranged at the inlet and is used to convey liquid material into the mixing chamber (11); A material accumulation structure (50) is arranged near the inlet and allows the solid material and the liquid material to form an accumulation layer at the material accumulation structure (50). The material accumulation structure (50) includes a plurality of material accumulation blocks (51). The plurality of material accumulation blocks (51) are arranged on the inner side wall of the mixing barrel (10) and are spaced apart along the circumferential direction of the mixing barrel (10).

2. The mixing device according to claim 1, characterized in that: A plurality of material accumulation blocks (51) arranged at intervals along the circumferential direction of the mixing barrel (10) form a material accumulation unit (501), and the material accumulation structure (50) includes a plurality of material accumulation units (501), and the plurality of material accumulation units (501) are arranged at intervals along the axial direction of the mixing barrel (10).

3. The mixing device according to claim 2, characterized in that: The second feeding portion (30) is provided with a plurality of discharge ports, and the projections of the plurality of discharge ports on a preset plane completely fall within the projection of the material accumulation structure (50) on the preset plane, and the preset plane is a horizontal plane passing through the axis of the mixing barrel (10).

4. The mixing device according to claim 2, characterized in that: In each of the material accumulation units (501), the interval between two adjacent material accumulation blocks (51) in the circumferential direction of the mixing barrel (10) is between 30 cm and 60 cm; and / or, The distance between two adjacent material accumulation units (501) in the axial direction of the mixing cylinder (10) is between 30 cm and 60 cm.

5. The mixing device according to any one of claims 1 to 4, characterized in that: The height of the material block (51) is between 2 cm and 4 cm.

6. The mixing device according to any one of claims 1 to 4, characterized in that: The mixing device further comprises a scraper (70) arranged in the mixing barrel (10), and the scraper (70) is used to control the thickness of the accumulated material layer.

7. The mixing device according to claim 6, characterized in that: The scraper (70) comprises a connecting portion (71) and a blade portion (72), wherein a first end of the connecting portion (71) is connected to the mixing barrel (10), and the blade portion (72) is connected to a second end of the connecting portion (71), wherein: The two ends of the blade portion (72) are respectively flush with or protrude from the two ends of the material accumulation structure (50) in the axial direction of the mixing barrel (10); and / or, The connecting portion (71) comprises a first rod (711), a second rod (712) and a reinforcing rod (713); the first rod (711) and the second rod (712) are arranged at an angle; the first end of the first rod (711) forms the first end of the connecting portion (71); the second end of the first rod (711) is connected to the first end of the second rod (712); the second end of the second rod (712) forms the second end of the connecting portion (71); and the reinforcing rod (713) is connected between the first end of the first rod (711) and the second end of the second rod (712).

8. The mixing device according to claim 7, characterized in that: The distance between the blade portion (72) and the top wall of the material accumulation block (51) is between 3 cm and 5 cm.

9. The mixing device according to any one of claims 1 to 4, characterized in that: The mixing device further comprises a striking hammer (80) arranged on the outer side wall of the mixing barrel (10), wherein the striking hammer (80) is hingedly connected to the mixing barrel (10), and when the mixing barrel (10) rotates, the striking hammer (80) is driven to swing and strike the outer side wall of the mixing barrel (10).

10. The mixing device according to any one of claims 1 to 4, characterized in that: The mixing device further comprises a material introducing structure (40) arranged in the mixing barrel (10), wherein the material introducing structure (40) is located between the material accumulating structure (50) and the inlet, and the material introducing structure (40) comprises a plurality of material introducing plates (41) arranged at intervals along the circumferential direction of the mixing barrel (10), and in the axial direction of the mixing barrel (10), each of the material introducing plates (41) extends in a direction away from the rotation direction of the mixing barrel (10).

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