Mixing device

Abstract

The utility model provides a material mixing device which comprises a material mixing barrel which obliquely extends in the transverse direction and is rotatably arranged, and the material mixing barrel is provided with a material mixing cavity; the feeding structure is arranged at the inlet of the mixing cavity and is used for conveying to-be-mixed materials into the mixing cavity; the crushing structure is movably arranged in the mixing cavity and is kept at one end, close to the outlet, of the mixing cavity under the action of gravity. According to the technical scheme, the problems that in the prior art, the breaking effect of a breaking structure is poor, and the breaking structure needs to be frequently taken out for cleaning or replacement 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] Acidification roasting technology is a method of extracting lithium from ore slag or waste batteries. This technology mainly converts lithium into water-soluble lithium salts by reacting black powder formed by ore slag with high lithium content or waste batteries with acidic substances (such as sulfuric acid), thereby extracting and separating lithium.

[0003] Among them, the step of mixing the black powder with the acid solution is a key step in the acidification roasting lithium extraction technology. The mixing uniformity of the two materials in this step and the particle size of the final mixed material have an important influence on the subsequent roasting step and the lithium leaching rate after roasting and soaking. In order to keep the particle size of the mixed material within a reasonable range, a crushing structure is set in the reactor in the related technology to break up the mixed material. However, since a viscous structure will be formed during the mixing process of the black powder and the acid solution and adhere to the crushing structure, the breaking effect is poor, and the staff needs to frequently stop the machine to take out the crushing structure for cleaning or replace the crushing structure, which affects the reaction efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a mixing device to solve the problem that the crushing structure in the related art has a poor breaking effect and needs to be frequently taken out for cleaning or replacement.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a mixing device, comprising: a mixing barrel, which is inclined and extends in a transverse direction and is rotatably arranged, and the mixing barrel has a mixing chamber; a feeding structure, which is arranged at the inlet of the mixing chamber and is used to convey the materials to be mixed into the mixing chamber; and a crushing structure, which is movably arranged in the mixing chamber and is maintained at one end of the mixing chamber close to the outlet under the action of gravity.

[0006] Further, the crushing structure includes a rod body and a crushing spiral arranged on the outer surface of the rod body.

[0007] Further, the diameter of the rod body is between 300 mm and 500 mm; and / or, the outer diameter of the crushing spiral is between 400 mm and 800 mm; and / or, the pitch of the crushing spiral is between 70 mm and 150 mm.

[0008] Furthermore, the crushing structure comprises a plurality of crushing sections arranged in sequence along the length direction of the mixing barrel, and each two adjacent crushing sections are fixedly connected.

[0009] Furthermore, the feeding structure includes a first feeding part for conveying solid materials into the mixing chamber and a second feeding part for conveying liquid materials into the mixing chamber, and the mixing chamber includes a first mixing zone, a second mixing zone and a crushing zone arranged in sequence from the inlet to the outlet, wherein the first feeding part and the second feeding part are both located in the first mixing zone, and the crushing structure is located in the crushing zone.

[0010] Further, the ratio between the length of the broken structure and the length of the mixing chamber is between 1 / 5 and 1 / 2; and / or, the ratio between the length of the first mixing zone and the length of the mixing chamber is between 3 / 40 and 1 / 8; and / or, the ratio between the length of the second mixing zone and the length of the mixing chamber is between 1 / 4 and 1 / 2.

[0011] Furthermore, the mixing drum is arranged to be inclined relative to the horizontal direction, and the angle between the axis of the mixing drum and the horizontal direction is between 1° and 3°.

[0012] Furthermore, the mixing drum includes a rotating drum portion, an inlet end plate arranged at the inlet end of the rotating drum portion, and an outlet end plate arranged at the outlet end of the rotating drum portion. The rotating drum portion, the inlet end plate and the outlet end plate are arranged to surround and form a mixing chamber. The inlet end plate and the outlet end plate are fixedly arranged, the rotating drum portion is rotatably arranged, and the feeding structure is passed through the inlet end plate.

[0013] Furthermore, the mixing barrel further comprises a stopper located on a side of the outlet end plate close to the inlet end plate, and the stopper cooperates with the crushing structure stopper.

[0014] Furthermore, the blocking member is a grid-like structure, and / or the cross-section of the drum portion is a circle or a regular polygon.

[0015] According to the technical solution of the utility model, the mixing barrel has a mixing chamber, the feeding structure is arranged at the entrance of the mixing chamber and can convey the materials to be mixed into the mixing chamber, and the materials to be mixed are mixed in the mixing chamber to facilitate the subsequent roasting step. The mixing device also includes a crushing structure movably arranged in the mixing chamber. As the mixing barrel rotates, the crushing structure moves in the mixing chamber and squeezes the mixed materials in the mixing chamber to break them up, so there is no need to set up an additional driving structure to drive the crushing structure; in addition, the crushing structure is located at one end of the mixing chamber close to the outlet, so that the mixed materials can be mixed at the front end of the mixing chamber for a period of time and then be broken up by the crushing structure after being relatively dry. On the one hand, the mixed materials are easier to be broken up, and on the other hand, it can avoid the mixed materials from adhering to the crushing structure or only a small amount of mixed materials are adhered to the crushing structure, and there is no need to frequently clean or replace the crushing structure. Therefore, the technical solution of the present application can effectively solve the problem that the crushing structure in the related art has a poor breaking effect and needs to be frequently taken out for cleaning or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 A schematic side view of an embodiment of a mixing device according to the utility model is shown;

[0018] Figure 2 Shows Figure 1 An enlarged view of a partial structure of a mixing device;

[0019] Figure 3 Shows Figure 1 A side view schematic diagram of a first embodiment of a crushing structure of a mixing device;

[0020] Figure 4 Shows Figure 3 A cross-sectional schematic diagram of a crushed structure;

[0021] Figure 5 Shows Figure 1 A side view schematically showing a second embodiment of the crushing structure of the mixing device.

[0022] The above drawings include the following reference numerals:

[0023] 10. Mixing cylinder; 11. Mixing chamber; 111. First mixing zone; 112. Second mixing zone; 113. Crushing zone; 12. Rotating cylinder; 13. Inlet end plate; 14. Outlet end plate; 15. Stopper;

[0024] 20. A first feeding section;

[0025] 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;

[0026] 40. Material introduction structure; 41. Material introduction plate;

[0027] 50. Material accumulation structure; 51. Material accumulation block;

[0028] 60. Crushing structure; 61. Rod body; 62. Crushing spiral; 63. Crushing section;

[0029] D1, the diameter of the rod body; D2, the outer diameter of the crushing spiral; P, the pitch of the crushing spiral. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] like Figure 1 , Figure 3 and Figure 4 As shown, the present application provides a mixing device, and the embodiment of the mixing device of the present application comprises: a mixing barrel 10, a feeding structure and a crushing structure 60. The mixing barrel 10 extends obliquely in the transverse direction and is rotatably arranged, and the mixing barrel 10 has a mixing chamber 11; the feeding structure is arranged at the inlet of the mixing chamber 11 and is used to convey the materials to be mixed into the mixing chamber 11; the crushing structure 60 is movably arranged in the mixing chamber 11 and is maintained at one end of the mixing chamber 11 close to the outlet under the action of gravity.

[0034] According to the technical solution of this embodiment, the mixing barrel 10 has a mixing chamber 11, and the feeding structure is arranged at the inlet of the mixing chamber 11 and can convey the materials to be mixed into the mixing chamber 11, and the materials to be mixed are mixed in the mixing chamber 11, so as to facilitate the subsequent roasting step. The mixing device also includes a crushing structure 60 movably arranged in the mixing chamber 11. As the mixing barrel 10 rotates, the crushing structure 60 moves in the mixing chamber 11 and squeezes the mixed materials in the mixing chamber 11 to break them up, so that there is no need to set up an additional driving structure to drive the crushing structure 60; in addition, the crushing structure 60 is located at one end of the mixing chamber 11 close to the outlet, so that the mixed materials can be mixed at the front end of the mixing chamber 11 (that is, the end close to the inlet) for a period of time and then be broken up by the crushing structure 60 after being relatively dry, which makes the mixed materials easier to be broken up on the one hand, and can prevent the mixed materials from adhering to the crushing structure 60 or only a small amount of mixed materials adhere to the crushing structure 60 on the other hand, so that the crushing structure 60 does not need to be frequently cleaned or replaced. Therefore, the technical solution of this embodiment can effectively solve the problem in the related art that the crushing structure has a poor breaking effect and needs to be frequently taken out for cleaning or replacement.

[0035] Specifically, in the present embodiment, the materials to be mixed include solid materials (black powder formed by waste batteries) and liquid materials (acid liquid). Since these two materials exist in a separated state and a mixed state, when describing this embodiment, the "material to be mixed" used refers to the two materials in a separated state, and the "mixed material" refers to the two materials in a mixed state (including a mixed material in an uneven mixed state near the inlet position of the mixing chamber 11 and a relatively uniform mixed material near the outlet position of the mixing chamber 11).

[0036] like Figures 3 to 5 As shown, the crushing structure 60 includes a rod body 61 and a crushing spiral 62 disposed on the outer surface of the rod body 61. The use of the spiral structure to crush and disperse the mixed material has the advantage of a simple structure.

[0037] Specifically, Figure 4As shown, the diameter D1 of the rod body 61 is between 300 mm and 500 mm; the outer diameter D2 of the crushing spiral 62 is between 400 mm and 800 mm; the pitch P of the crushing spiral 62 is between 70 mm and 150 mm; and the length of the crushing structure 60 is between 4 m and 10 m. This configuration allows the crushing structure 60 to have a certain length and weight, and during the rotation of the mixing barrel 10, the crushing structure 60 rolls in the mixing chamber 11 and continuously squeezes the mixed material. In addition, the setting of the pitch P of the crushing spiral 62 allows the mixed material to be broken up into a suitable particle size, and also prevents the mixed material from being stuck in the crushing spiral 62. Preferably, the diameter D1 of the rod body 61 can be 300 mm, 400 mm or 500 mm; the outer diameter D2 of the crushing spiral 62 can be 400 mm, 500 mm, 600 mm, 700 mm or 800 mm; the pitch P of the crushing spiral 62 can be 70 mm, 90 mm, 110 mm, 130 mm or 150 mm; the length of the crushing structure 60 can be 4 m, 6 m, 8 m or 10 m.

[0038] The present application provides two embodiments of the crushing structure 60, wherein: Figure 3 and Figure 4 A schematic structural diagram of a first embodiment of a crushing structure 60 is shown; Figure 5 FIG. 1 is a schematic structural diagram of a second embodiment of a crushing structure 60 .

[0039] In the first embodiment, the rod body 61 of the crushing structure 60 is an integrated long rod-shaped structure, and the crushing spiral 62 is also an integrated structure.

[0040] In the second embodiment, the crushing structure includes a plurality of crushing segments 63 arranged in sequence along the length direction of the mixing barrel 10, and each two adjacent crushing segments 63 are fixedly connected. That is, in the second embodiment, the rod body 61 and the crushing spiral 62 are both multi-segment structures, wherein a section of the rod body 61 and a corresponding section of the crushing spiral 62 form a crushing segment 63. Specifically, two adjacent crushing segments 63 can be connected by a flange structure, and the length of each crushing segment is between 1.5 mm and 2 m. In this way, each crushing segment 63 can be processed separately and then connected to form a crushing structure 60, which has the advantages of easy processing and installation. In addition, when the crushing structure 60 needs to be replaced or repaired, it can be operated section by section. When a certain crushing segment 63 is damaged or corroded to a certain extent, only the crushing segment 63 can be replaced, which has the advantages of easy replacement and maintenance.

[0041] like Figure 1As shown, the feeding structure includes a first feeding part 20 for conveying solid materials into the mixing chamber 11 and a second feeding part 30 for conveying liquid materials into the mixing chamber 11. The mixing chamber 11 includes a first mixing area 111, a second mixing area 112 and a crushing area 113 arranged in sequence from the inlet to the outlet, wherein the first feeding part 20 and the second feeding part 30 are both located in the first mixing area 111, and the crushing structure 60 is located in the crushing area 113. The mixing chamber 11 is divided into three areas, wherein the first mixing area 111 is used to input materials to be mixed and perform preliminary mixing of materials; the second mixing area 112 is used to further mix the mixed materials so that the mixed materials become relatively dry; the crushing structure 60 is arranged in the crushing area 113 to break up the mixed materials so that they are kept in a suitable particle size and further improve the uniformity of the mixed materials.

[0042] like Figure 2 As shown, the mixing device further includes a guide structure 40 disposed on the inner side wall of the rotating cylinder 12 and close to the inlet end plate 13, wherein the guide structure 40 includes a plurality of guide plates 41 spaced apart along the circumferential direction of the rotating cylinder 12; the first discharge section 312 and the second discharge section 322 are both located on the side of the guide structure 40 away from the inlet end plate 13. The guide structure 40 can guide the solid material transported to the mixing chamber 11 by the first feeding section 20, so that the solid material can smoothly move into the mixing chamber 11, and the first discharge section 312 and the second discharge section 322 have no overlapping parts with the guide structure 40 in the axial direction of the mixing cylinder 10. It can prevent the acid sprayed from the first discharge section 312 and the second discharge section 322 from falling on the guide structure 40 and corroding the guide structure 40.

[0043] like Figure 2 As shown, the mixing device further includes a material accumulation structure 50 disposed on the inner side wall of the rotating drum 12 and near the inlet end plate 13. The material accumulation structure 50 includes a plurality of material accumulation blocks 51 arranged in an array on the inner side wall of the rotating drum 12, wherein the projection of the first material discharge section 312 and the projection of the second material discharge section 322 on the preset plane both 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 drum 10. Since the acid liquid is highly corrosive, if it directly contacts the wall of the rotating drum 12, it will corrode the wall of the rotating drum 12. The arrangement of the material accumulation block 51 can cause the mixed material to accumulate on and near it, and then form a material accumulation layer on the part of the rotating drum 12 where the material accumulation structure 50 is arranged, so as to prevent the acid liquid from directly contacting the wall of the rotating drum 12 and protect the wall of the rotating drum 12.

[0044] Specifically, Figure 2As shown, the first feeding part 20 is a feeding screw or belt conveying mechanism. The second feeding part 30 includes a first feeding pipe 31 and a second feeding pipe 32, the first feeding pipe 31 includes a first conveying section 311 and a first discharging section 312, and a plurality of first discharging holes are arranged on the side wall of the first discharging section 312, and the second feeding pipe 32 includes a second conveying section 321 and a second discharging section 322, and a plurality of second discharging holes are arranged on the side wall of the second discharging section 322, wherein the first discharging section 312 and the second discharging section 322 do not overlap in the axial direction of the mixing barrel 10. In this embodiment, the original longer feed pipe is divided into two feed pipes (a first feed pipe 31 and a second feed pipe 32), so that only a small number of first discharge holes need to be set on the first feed pipe 31, and only a small number of second discharge holes need to be set on the second feed pipe 32, thereby avoiding the situation where the fluid pressure at the head end and the tail end of the first discharge section 312 and the fluid pressure at the head end and the tail end of the second discharge section 322 are greatly different, so that the liquid discharge volume of all the first discharge holes is basically the same, and the liquid discharge volume of all the second discharge holes is basically the same, thereby ensuring that the solid material and the liquid material are mixed evenly, and at the same time, it is convenient for the subsequent breaking up step and improves the uniformity of mixing. Among them, the first feed pipe 31 and the second feed pipe 32 can be arranged at intervals in the vertical direction, and can also be arranged at intervals in the horizontal direction. In this embodiment, two feed pipes are provided. During the specific implementation, the staff can appropriately increase the number of feed pipes according to the amount of black powder and the amount of acid liquid to be mixed.

[0045] The material introducing structure 40 , the material accumulating structure 50 , the first material feeding section 20 and the second material feeding section 30 are all arranged in the first material mixing zone 111 .

[0046] Specifically, in this embodiment, the length of the mixing chamber 11 is 20m, and the ratio of the length of the crushing structure 60 to the length of the mixing chamber 11 is between 1 / 5 and 1 / 2, that is, the length of the crushing structure 60 is between 4m and 10m. This arrangement allows the mixed material to react at the front end of the mixing chamber 11 for a period of time and distance before contacting the crushing structure 60, avoiding adhesion to the crushing structure 60 or allowing only a small amount of the mixed material to adhere to the crushing structure 60; in addition, the crushing structure 60 also has a sufficiently long crushing length, thereby ensuring the crushing and breaking effect. Preferably, the ratio of the length of the crushing structure 60 to the length of the mixing chamber 11 can be 1 / 5, 3 / 10, 2 / 5 or 1 / 2.

[0047] The ratio of the length of the first mixing zone 111 to the length of the mixing chamber 11 is between 3 / 40 and 1 / 8, that is, the length of the first mixing zone 111 is between 1.5m and 2.5m. The first mixing zone 111 is mainly used for inputting materials to be mixed and performing preliminary mixing, so its length can be set shorter. Preferably, the ratio of the length of the first mixing zone 111 to the length of the mixing chamber 11 can be 3 / 40, 1 / 10 or 1 / 8.

[0048] The ratio of the length of the second mixing zone 112 to the length of the mixing chamber 11 is between 1 / 4 and 1 / 2, that is, the length of the second mixing zone 112 is between 5m and 10m. No stirring structure or dispersing structure is provided in the second mixing zone 112, so that the mixed material gradually moves toward the crushing structure 60 in the mixing chamber 11 under the rotation of the mixing barrel 10, so that the mixed material can be further mixed and dried, thereby preventing the mixed material from adhering to the crushing structure 60 or making only a small amount of the mixed material adhere to the crushing structure 60. Preferably, the ratio of the length of the second mixing zone 112 to the length of the mixing chamber 11 can be 1 / 4, 3 / 8 or 1 / 2.

[0049] In this embodiment, the mixing barrel 10 is tilted relative to the horizontal direction, and the angle between the axis of the mixing barrel 10 and the horizontal direction is between 1° and 3°. The mixing barrel 10 itself is tilted at a certain angle, which, on the one hand, allows the mixed material to gradually move downstream along the inclined slope, and on the other hand, allows the crushing structure 60 to be maintained at the outlet end of the mixing chamber 11 only by its own gravity, which has the advantage of a simple structure. Preferably, the angle between the axis of the mixing barrel 10 and the horizontal direction can be 1°, 2° or 3°.

[0050] like Figure 1 and Figure 2 As shown, the mixing drum 10 includes a rotating drum portion 12, an inlet end plate 13 disposed at the inlet end of the rotating drum portion 12, and an outlet end plate 14 disposed at the outlet end of the rotating drum portion 12. The rotating drum portion 12, the inlet end plate 13, and the outlet end plate 14 surround and form a mixing chamber 11. The inlet end plate 13 and the outlet end plate 14 are fixedly disposed, the rotating drum portion 12 is rotatably disposed, and a feeding structure is disposed through the inlet end plate 13. The rotating drum portion 12 itself is rotatably disposed, and the solid material and the liquid material inside the mixing chamber 11 are mixed by its rotation; the inlet end plate 13 and the outlet end plate 14 are fixedly disposed, so that the feeding structure and the discharging structure (specifically, the discharging port disposed on the outlet end plate 14) are conveniently disposed.

[0051] like Figure 1As shown, the mixing barrel 10 further includes a stopper 15 located on one side of the outlet end plate 14 close to the inlet end plate 13, and the stopper 15 cooperates with the crushing structure 60. Since the crushing structure 60 is movably arranged in the mixing chamber 11, the setting of the stopper 15 can stop the crushing structure 60, preventing it from moving to the discharge structure on the outlet end plate 14 and getting stuck, which affects the realization of its crushing and scattering functions.

[0052] In this embodiment, the stopper 15 is a grid-like structure. The grid-like structure can stop the crushing structure 60 on the one hand, and enable the mixed material to move smoothly to the discharging structure on the other hand.

[0053] The cross section of the drum portion 12 is circular or regular polygonal. The drum portion 12 with a circular cross section has the advantages of simple structure and easy movable sealing connection between the drum portion 12 and the inlet end plate 13 and the outlet end plate 14; the drum portion 12 with a regular polygonal cross section (for example, regular pentagon, regular hexagon, regular octagon, etc.) can reduce dust from powder. When used specifically, the above cross-sectional shapes can be selected according to needs.

[0054] In this embodiment, the mixing barrel 10 and the crushing structure 60 are both made of metal materials with certain corrosion resistance and temperature resistance, such as steel of type 316, 204, 316L, etc.

[0055] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model 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, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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.

[0057] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mixing device, characterized in that: include: A mixing barrel (10) extending obliquely in a transverse direction and rotatably arranged, wherein the mixing barrel (10) has a mixing chamber (11); A feeding structure, arranged at the inlet of the mixing chamber (11) and used for conveying materials to be mixed into the mixing chamber (11); The crushing structure (60) is movably arranged in the mixing chamber (11) and is retained at one end of the mixing chamber (11) close to the outlet under the action of gravity.

2. The mixing device according to claim 1, characterized in that: The crushing structure (60) includes a rod body (61) and a crushing spiral (62) arranged on the outer surface of the rod body (61).

3. The mixing device according to claim 2, characterized in that: The diameter (D1) of the rod body (61) is between 300 mm and 500 mm; and / or, The outer diameter (D2) of the crushing spiral (62) is between 400 mm and 800 mm; and / or, The pitch (P) of the crushing spiral (62) is between 70 mm and 150 mm.

4. The mixing device according to any one of claims 1 to 3, characterized in that The crushing structure (60) comprises a plurality of crushing segments (63) arranged in sequence along the length direction of the mixing barrel (10), and each two adjacent crushing segments (63) are fixedly connected.

5. The mixing device according to any one of claims 1 to 3, characterized in that: The feeding structure comprises a first feeding part (20) for conveying solid materials into the mixing chamber (11) and a second feeding part (30) for conveying liquid materials into the mixing chamber (11); the mixing chamber (11) comprises a first mixing zone (111), a second mixing zone (112) and a crushing zone (113) which are sequentially arranged from the inlet to the outlet, wherein the first feeding part (20) and the second feeding part (30) are both located in the first mixing zone (111), and the crushing structure (60) is located in the crushing zone (113).

6. The mixing device according to claim 5, characterized in that: The ratio between the length of the crushing structure (60) and the length of the mixing chamber (11) is between 1 / 5 and 1 / 2; and / or, The ratio between the length of the first mixing zone (111) and the length of the mixing chamber (11) is between 3 / 40 and 1 / 8; and / or, The ratio between the length of the second mixing zone (112) and the length of the mixing chamber (11) is between 1 / 4 and 1 / 2.

7. The mixing device according to any one of claims 1 to 3, characterized in that: The mixing barrel (10) is arranged to be inclined relative to the horizontal direction, and the angle between the axis of the mixing barrel (10) and the horizontal direction is between 1° and 3°.

8. The mixing device according to any one of claims 1 to 3, characterized in that: The mixing drum (10) comprises a rotating drum portion (12), an inlet end plate (13) arranged at the inlet end of the rotating drum portion (12), and an outlet end plate (14) arranged at the outlet end of the rotating drum portion (12); the rotating drum portion (12), the inlet end plate (13), and the outlet end plate (14) are arranged to surround and form the mixing chamber (11); the inlet end plate (13) and the outlet end plate (14) are fixedly arranged, the rotating drum portion (12) is rotatably arranged, and the feeding structure is penetrated through the inlet end plate (13).

9. The mixing device according to claim 8, characterized in that: The mixing barrel (10) further comprises a stopper (15) located on a side of the outlet end plate (14) close to the inlet end plate (13), and the stopper (15) cooperates with the crushing structure (60) to stop.

10. The mixing device according to claim 9, characterized in that: The blocking member (15) is a grid-like structure, and / or the cross-section of the rotating drum portion (12) is a circle or a regular polygon.

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