Mixing device
By distributing feed pipes and optimizing the layout of discharge holes, the uneven mixing problem of black powder and acidic substances caused by the long tube structure is solved, and a more uniform mixing effect is achieved. It is suitable for acidification and roasting lithium extraction technology. Lithium extraction process.
Patent Information
- Application Number
- CN202421064761.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-15
AI Technical Summary
In the existing acidification and roasting lithium extraction technology, the long tube structure leads to the unsatisfactory mixing effect of black powder and acidic substances, the amount of acid sprayed at the first end is too large, and the amount of acid sprayed at the tail end is insufficient, resulting in the problem of uneven mixing.
A mixing device is designed, and the first and second feed pipes are arranged separately. The first and second feed pipes do not overlap in the axial direction of the mixing barrel, and a plurality of discharge holes are provided to ensure that each The liquid output volume of each discharge hole is basically the same, avoiding differences in fluid pressure and achieving uniform mixing.
By setting up feed pipes and optimizing the layout of discharge holes, we ensure that solid and liquid materials are mixed evenly in the mixing chamber, improving mixing uniformity, facilitating subsequent baking steps, and solving the problem of unsatisfactory mixing effect.
Smart Images
Figure CN222266868U_ABST
Abstract
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 acidic substance is a key step in the acidification roasting lithium extraction technology. In order to ensure the uniformity of the mixing of the black powder and the acidic substance, there is a solution in the related technology of using a long tube structure with multiple acid injection holes to spray acid into the black powder. However, since the long tube structure is long, the acid injection amount of the acid injection hole at the head end of the long tube structure will be much greater than the acid injection amount of the acid injection hole at the end of the long tube structure, and the mixing effect is not ideal. Utility Model Content
[0004] The main purpose of the utility model is to provide a mixing device to solve the problem of unsatisfactory mixing effect of black powder and acidic substance in the related art.
[0005] In order to achieve the above-mentioned purpose, the utility model provides a mixing device, comprising: a mixing barrel, extending in the transverse direction and having a mixing chamber; a first feeding part, arranged at the inlet of the mixing chamber and used for conveying solid materials into the mixing chamber; a second feeding part, arranged at the inlet of the mixing chamber and used for conveying liquid materials into the mixing chamber, the second feeding part comprising a first feeding pipe and a second feeding pipe, the first feeding pipe comprising a first conveying section and a first discharging section, a side wall of the first discharging section being provided with a plurality of first discharging holes, the second feeding pipe comprising a second conveying section and a second discharging section, a side wall of the second discharging section being provided with a plurality of second discharging holes, wherein the first discharging section and the second discharging section do not overlap in the axial direction of the mixing barrel.
[0006] Further, the length of the first discharging section is between 0.4 m and 1 m; and / or the length of the second discharging section is between 0.4 m and 1 m.
[0007] Further, the first feed pipe and the second feed pipe are both located on a vertical plane passing through the axis of the mixing barrel, the first feed pipe is located above the second feed pipe, the first conveying section is located between the inlet of the mixing chamber and the first discharging section, the second conveying section is located between the inlet of the mixing chamber and the second discharging section, and the first discharging section is arranged away from the inlet of the mixing chamber relative to the second discharging section; or, the first feed pipe and the second feed pipe are located on the same horizontal plane and are arranged close to the vertical plane passing through the axis of the mixing barrel, the first conveying section is located between the inlet of the mixing chamber and the first discharging section, the second conveying section is located between the inlet of the mixing chamber and the second discharging section, and the first discharging section is arranged away from the inlet of the mixing chamber relative to the second discharging section.
[0008] Furthermore, a plurality of first discharge holes are arranged along the axial direction of the mixing barrel, wherein the diameter of each first discharge hole is between 2 mm and 8 mm; and / or the center distance between each two adjacent first discharge holes is between 2 cm and 10 cm.
[0009] Furthermore, the multiple first discharge holes include multiple first hole structures and multiple second hole structures, the multiple first hole structures are arranged along the axial direction of the mixing barrel to form a first hole group, and the multiple second hole structures are arranged along the axial direction of the mixing barrel to form a second hole group, wherein the first hole group and the second hole group are respectively arranged on both sides of a vertical plane passing through the axis of the first feed pipe.
[0010] Furthermore, the angle between the line between the center of the first hole structure and the axis of the first feed pipe and the vertical direction is between 7.5° and 22.5°; and / or the diameter of the first hole structure is between 2mm and 5mm; and / or the center distance between two adjacent first hole structures is between 1.5cm and 5cm.
[0011] Furthermore, the multiple first discharge holes also include multiple third hole structures, and the multiple third hole structures are arranged along the axial direction of the mixing barrel to form a third hole group, and the third hole group is located on a vertical plane passing through the axis of the first feed pipe; and / or, the first hole group and the second hole group are symmetrically arranged relative to the vertical plane passing through the axis of the first feed pipe.
[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 first feed portion and the second feed portion are penetrated through the inlet end plate.
[0013] Furthermore, the mixing device also includes a material introducing structure arranged on the inner side wall of the rotating drum portion and close to the inlet end plate, wherein the material introducing structure includes a plurality of material introducing plates arranged at intervals along the circumferential direction of the rotating drum portion, and in the direction from the inlet end plate to the outlet end plate, each material introducing plate extends in a direction away from the rotation direction of the rotating drum portion; and / or, the first material discharging section and the second material discharging section are both located on the side of the material introducing structure away from the inlet end plate.
[0014] Furthermore, the liquid material includes acid liquid, and the mixing device also includes a material accumulation structure arranged on the inner side wall of the rotating drum portion and close to the inlet end plate, the material accumulation structure includes a plurality of material accumulation blocks arranged in an array on the inner side wall of the rotating drum portion, wherein a projection of the first discharging section on a preset plane and a projection of the second discharging section on a preset plane both 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 drum; or, a projection of the first discharging section on a preset plane and a projection of the second discharging section on a preset plane both 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 drum, and a distance between an inner end of one of the first discharging section and the second discharging section away from the inlet end plate and an inner end of the material accumulation structure in the axial direction of the mixing drum is between 0.5m and 1m.
[0015] According to the technical solution of the utility model, the mixing barrel has a mixing chamber, and the solid material conveyed by the first feeding part and the liquid material conveyed by the second feeding part can be mixed in the mixing chamber, so as to facilitate the subsequent roasting step. Among them, the second feeding part includes a first feeding pipe and a second feeding pipe, and the first feeding pipe and the second feeding pipe are both used to pass the liquid material into the mixing chamber. In this application, the originally longer feeding pipe is divided into two feeding pipes, so that only a small number of first discharge holes need to be set on the first feeding pipe, and only a small number of second discharge holes need to be set on the second feeding pipe, so as to avoid the situation that the fluid pressure at the head end and the tail end of the first discharge section are greatly different, and the fluid pressure at the head end and the tail end of the second discharge section are greatly different, so as to make the liquid discharge amount of all the first discharge holes basically the same, and the liquid discharge amount of all the second discharge holes basically the same, so as to ensure that the solid material and the liquid material can be mixed evenly, and at the same time facilitate the subsequent breaking step and improve the uniformity of mixing. Therefore, the technical solution of the present application can effectively solve the problem of unsatisfactory mixing effect of black powder and acidic substance in the related art. 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 1A 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 schematic cross-sectional view of a first feed pipe of a mixing device.
[0020] The above drawings include the following reference numerals:
[0021] 10. Mixing cylinder; 11. Mixing chamber; 12. Rotating cylinder; 13. Inlet end plate; 14. Outlet end plate;
[0022] 20. A first feeding section;
[0023] 30. Second feeding part; 31. First feeding pipe; 311. First conveying section; 312. First discharging section; 313. First discharging hole; 3131. First hole structure; 3132. Second hole structure; 3133. Third hole structure; 32. Second feeding pipe; 321. Second conveying section; 322. Second discharging section;
[0024] 40. Material introduction structure; 41. Material introduction plate;
[0025] 50. Material accumulation structure; 51. Material accumulation block;
[0026] a. Angle between the line between the center of the first hole structure and the axis of the first feed pipe and the vertical direction. DETAILED DESCRIPTION
[0027] 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.
[0028] 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.
[0029] 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.
[0030] Specifically, in the related art, since the long tube structure is longer, the fluid pressure at the tail end of the long tube structure becomes smaller than the fluid pressure at the head end of the long tube structure, and the acid injection amount of the acid injection hole at the head end of the long tube structure will be much larger than the acid injection amount of the acid injection hole at the tail end of the long tube structure. This will cause a large amount of acidic substances to be mixed into the black powder corresponding to the acid injection hole at the head end of the long tube structure, forming a large viscous semi-solid block structure, which is difficult to break up and then mix with other black powders; while the black powder corresponding to the acid injection hole at the tail end of the long tube structure has less acidic substances mixed in, which will result in insufficient lithium conversion and more lithium not being converted into lithium salts.
[0031] like Figure 1 and Figure 2 As shown, the present application provides a mixing device. An embodiment of the mixing device of the present application includes: a mixing barrel 10 , a first feeding part 20 and a second feeding part 30 . Among them, the mixing barrel 10 extends in the transverse direction and has a mixing chamber 11; the first feeding part 20 is arranged at the entrance of the mixing chamber 11 and is used to convey solid materials into the mixing chamber 11; the second feeding part 30 is arranged at the entrance of the mixing chamber 11 and is used to convey liquid materials into the mixing chamber 11, 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 313 are arranged on the side wall of the first discharging section 312, 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.
[0032] By applying the technical solution of this embodiment, the mixing barrel 10 has a mixing chamber 11, and the solid material conveyed by the first feeding part 20 and the liquid material conveyed by the second feeding part 30 can be mixed in the mixing chamber 11, thereby facilitating the subsequent roasting step. Among them, the second feeding part 30 includes a first feeding pipe 31 and a second feeding pipe 32, and the first feeding pipe 31 and the second feeding pipe 32 are both used to pass liquid materials into the mixing chamber 11. In this embodiment, the original longer feeding pipe is divided into two feeding pipes (the first feeding pipe 31 and the second feeding pipe 32), so that only a small number of first discharge holes 313 need to be set on the first feeding pipe 31, and only a small number of second discharge holes need to be set on the second feeding pipe 32, thereby avoiding the situation where the fluid pressure at the head and tail ends of the first discharge section 312 is greatly different, and the fluid pressure at the head and tail ends of the second discharge section 322 is greatly different, so that the liquid discharge volume of all the first discharge holes 313 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 can be evenly mixed, and at the same time, it is convenient for the subsequent breaking step and improves the uniformity of mixing. Therefore, the technical solution of this embodiment can effectively solve the problem of unsatisfactory mixing effect of black powder and acidic substances in the related technology.
[0033] It should be noted that, when describing this embodiment, the "head end", "front end" and "upstream" used refer to the end close to the inlet of the mixing chamber 11 or the part close to the inlet of the mixing chamber 11, and the "tail end", "rear end" and "downstream" refer to the end away from the inlet of the mixing chamber 11 or the part away from the inlet of the mixing chamber 11. Specifically, in this embodiment, the solid material is black powder formed by waste batteries, and the liquid material is acid. The first feeding part 20 is a feeding screw or belt conveyor mechanism.
[0034] In this embodiment, the second feeding part 30 includes two feeding pipes. Of course, in the specific implementation, the staff can appropriately increase the number of feeding pipes according to the amount of black powder and the amount of acid liquid to be mixed.
[0035] In this embodiment, the length of the first discharge section 312 is between 0.4m and 1m, and the length of the second discharge section 322 is between 0.4m and 1m. Setting the lengths of the first discharge section 312 and the second discharge section 322 within the above range can effectively avoid 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, thereby making the liquid discharge amounts of all the first discharge holes 313 and all the liquid discharge amounts of the second discharge holes basically the same. Preferably, the length of the first discharge section 312 can be 0.4m, 0.6m, 0.8m or 1m; the length of the second discharge section 322 can be 0.4m, 0.6m, 0.8m or 1m.
[0036] like Figure 1 and Figure 2 As shown, the first feed pipe 31 and the second feed pipe 32 are both located on a vertical plane passing through the axis of the mixing barrel 10, the first feed pipe 31 is located above the second feed pipe 32, the first conveying section 311 is located between the inlet of the mixing chamber 11 and the first discharging section 312, the second conveying section 321 is located between the inlet of the mixing chamber 11 and the second discharging section 322, and the first discharging section 312 is arranged away from the inlet of the mixing chamber 11 relative to the second discharging section 322. Among them, the first conveying section 311 is connected between the acid storage device and the first discharging section 312, so that the acid liquid in the acid storage device can flow to the first discharging section 312 through the first conveying section 311 and be discharged through the first discharging hole 313 to mix with the black powder; the second conveying section 321 is connected between the acid storage device and the second discharging section 322, so that the acid liquid in the acid storage device can flow to the second discharging section 322 through the second conveying section 321 and be discharged through the second discharging hole to mix with the black powder. The first feed pipe 31 is relatively long and located above the second feed pipe 32 , and the first discharge section 312 is located downstream of the second discharge section 322 , so that the second feed pipe 32 can avoid blocking the acid injection path of the first discharge section 312 .
[0037] It should be noted that the above-mentioned “the first feed pipe 31 and the second feed pipe 32 are both located on the vertical plane passing through the axis of the mixing barrel 10” means that the axes of the first feed pipe 31 and the second feed pipe 32 are located on the vertical plane passing through the axis of the mixing barrel 10. Since the mixing barrel 10 is a symmetrical structure relative to the vertical plane passing through the axis of the mixing barrel 10, the first feed pipe 31 and the second feed pipe 32 are arranged at the horizontal center of the mixing barrel 10, the acid liquid and the black powder can be mixed more evenly.
[0038] Of course, in an embodiment not shown in the figure, the first feed pipe 31 and the second feed pipe 32 can be arranged horizontally side by side. Specifically, the first feed pipe 31 and the second feed pipe 32 are located on the same horizontal plane and are arranged close to the vertical plane passing through the axis of the mixing barrel 10. The first conveying section 311 is located between the inlet of the mixing chamber 11 and the first discharging section 312, and the second conveying section 321 is located between the inlet of the mixing chamber 11 and the second discharging section 322. The first discharging section 312 is arranged away from the inlet of the mixing chamber 11 relative to the second discharging section 322. This arrangement makes the acid discharge heights of the first discharging section 312 and the second discharging section 322 consistent, and the first feed pipe 31 and the second feed pipe 32 are arranged close to the horizontal center of the mixing barrel 10, so that the acid liquid and the black powder can be mixed more evenly.
[0039] Specifically, in the present embodiment, the first discharge section 312 is arranged relative to the second discharge section 322 away from the inlet of the mixing chamber 11, that is, the first discharge section 312 is located downstream of the second discharge section 322, wherein the center distance between the first discharge hole 313 located at the most upstream of the first discharge section 312 and the second discharge hole located at the most downstream is equivalent to the center distance between the first discharge holes 313 adjacent to each other in the axial direction of the mixing barrel 10 and the center distance between the second discharge holes adjacent to each other in the axial direction of the mixing barrel 10, thereby enabling the multiple first discharge holes 313 and the multiple second discharge holes to discharge the acid liquid continuously and evenly in the axial direction of the mixing barrel 10.
[0040] Specifically, two specific embodiments of the first feeding pipe 31 are provided in the present application. The embodiments of the two first feeding pipes 31 are described below respectively:
[0041] Embodiment 1:
[0042] A plurality of first discharge holes 313 are arranged along the axial direction of the mixing barrel 10, wherein the diameter of each first discharge hole 313 is between 2 mm and 8 mm; and the center distance between each adjacent first discharge hole 313 is between 2 cm and 10 cm. The diameter of each first discharge hole 313 within the above range can make the acid discharge amount in each first discharge hole 313 moderate, avoiding the formation of large viscous semi-solid block structures that are difficult to break up due to excessive acid discharge or the formation of acid mist due to small apertures. Preferably, the diameter of each first discharge hole 313 can be 2 mm, 5 mm or 8 mm. The center distance between each adjacent first discharge holes 313 within the above range can make the acid liquid of each first discharge hole 313 fall on the black powder material appropriately, thereby making the acid liquid and the black powder material evenly mixed. Preferably, the center distance between each adjacent first discharge holes 313 is 2 cm, 6 cm or 10 cm.
[0043] In this embodiment, a plurality of first discharge holes 313 are disposed at the bottom of the first discharge section 312 .
[0044] Embodiment 2:
[0045] like Figure 3As shown, the plurality of first discharge holes 313 include a plurality of first hole structures 3131 and a plurality of second hole structures 3132, wherein the plurality of first hole structures 3131 are arranged along the axial direction of the mixing barrel 10 to form a first hole group, and the plurality of second hole structures 3132 are arranged along the axial direction of the mixing barrel 10 to form a second hole group, wherein the first hole group and the second hole group are respectively arranged on both sides of the vertical plane passing through the axis of the first feed pipe 31. By setting the first hole group and the second hole group, it is possible to achieve multi-point acid discharge in the circumferential direction of the first discharge section 312, thereby making the mixing of the black powder and the acid liquid more uniform. Preferably, the first hole group and the second hole group are symmetrically arranged relative to the vertical plane passing through the axis of the first feed pipe 31.
[0046] like Figure 3 As shown, the plurality of first discharge holes 313 also include a plurality of third hole structures 3133, and the plurality of third hole structures 3133 are arranged along the axial direction of the mixing barrel 10 to form a third hole group, and the third hole group is located on a vertical plane passing through the axis of the first feed pipe 31. The third hole group is arranged between the first hole group and the second hole group, so that acid can be discharged at multiple points in the circumferential direction of the first discharge section 312, and the mixing of the black powder and the acid liquid is further made more uniform.
[0047] It should be noted that the above “the third hole group is located on a vertical plane passing through the axis of the mixing barrel 10 ” means that the line connecting the center points of the plurality of third hole structures 3133 in the third hole group is located on a vertical plane passing through the axis of the mixing barrel 10 .
[0048] Specifically, the angle a between the line connecting the center of the first hole structure 3131 and the axis of the first feed pipe 31 and the vertical direction is between 7.5° and 22.5°; the diameter of the first hole structure 3131 is between 2mm and 5mm; the center distance between two adjacent first hole structures 3131 is between 1.5cm and 5cm. In the process of mixing, it is generally necessary to control the amount of black powder to account for between 8% and 20% in the height direction of the mixing barrel 10; in addition, the first feed part 20 is generally arranged below the second feed part 30, therefore, in this embodiment, the second feed part 30 is arranged in a section of 1 / 2 to 2 / 3 in the height direction of the mixing barrel 10. The angle a between the line between the center of the first hole structure 3131 and the axis of the first feed pipe 31 and the vertical direction is within the above range, which can make the first hole group, the second hole group and the third hole group dispersed as much as possible in the circumferential direction of the first feed pipe 31 while preventing the acid from flowing to the black powder and directly contacting the wall of the mixing barrel 10 to corrode the barrel wall. Preferably, the angle a can be 7.5°, 15° or 22.5°; the diameter of the first hole structure 3131 is within the above range, which can make the acid output in each first hole structure 3131 moderate, avoiding To avoid excessive acid output forming large, viscous semi-solid block structures that are difficult to break up or acid mist formed due to small pore sizes, preferably, the diameter of the first hole structure 3131 can be 2mm, 3mm, 4mm or 5mm; the center distance between two adjacent first hole structures 3131 can be within the above range so that the acid liquid in each first hole structure 3131 can fall on the black powder at a suitable point, thereby allowing the acid liquid and the black powder to be evenly mixed. Preferably, the center distance between two adjacent first hole structures 3131 is 1.5cm, 3cm or 5cm.
[0049] The structural parameters of the second hole structure 3132 in the second hole group and the third hole structure 3133 in the third hole group are consistent with the structural parameters of the first hole structure 3131 in the first hole group, and are not described again.
[0050] The arrangement and structure of the second discharge hole in the second discharge section 322 of the second feed pipe 32 can adopt any one of the arrangements and structures of the first discharge hole 313 on the first discharge section 312 of the first feed pipe 31 in the above two embodiments, which will not be repeated here.
[0051] In a specific embodiment, the first discharging section 312 and the second discharging section 322 may both adopt the structure of the first embodiment, or both adopt the structure of the second embodiment, or one of the first discharging section 312 and the second discharging section 322 may adopt the structure of the first embodiment and the other may adopt the structure of the second embodiment, and this is not limited in the present application.
[0052] like Figure 1 and Figure 2 As shown, the mixing drum 10 includes 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 surround and form a 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 first feeding portion 20 and the second feeding portion 30 are penetrated through the inlet end plate 13. The rotating drum portion 12 itself is rotatably arranged, 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 arranged, which is convenient for arranging the first feeding portion 20, the second feeding portion 30 and the discharge structure of the mixed material.
[0053] In this embodiment, the first feed pipe 31 and the second feed pipe 32 are both DN25 pipes, and the front ends thereof are fixedly connected to the inlet end plate 13 by welding or flange connection.
[0054] Specifically, Figure 2 As shown, the mixing device also includes a material introduction structure 40 arranged on the inner wall of the rotating drum portion 12 and close to the inlet end plate 13, wherein the material introduction structure 40 includes a plurality of material introduction plates 41 arranged at intervals along the circumferential direction of the rotating drum portion 12, and in the direction from the inlet end plate 13 to the outlet end plate 14, each material introduction plate 41 extends in a direction away from the rotation direction of the rotating drum portion 12; the first discharge section 312 and the second discharge section 322 are both located on the side of the material introduction structure 40 away from the inlet end plate 13. The guide structure 40 can guide the solid material delivered to the mixing chamber 11 by the first feeding part 20, so that the solid material can smoothly move into the mixing chamber 11. Specifically, in the direction from the inlet end plate 13 to the outlet end plate 14, each guide plate 41 extends in a direction away from the rotation direction of the drum part 12, so that the guide plate 41 can form a steeper guide slope, and the guide effect is good as the drum part 12 rotates; 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, so that the first discharge section 312 and the second discharge section 322 are both located downstream of the guide structure 40 and have no overlap with the guide structure 40 in the axial direction of the mixing barrel 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.
[0055] like Figure 2As shown, the liquid material includes acid liquid, and the mixing device also includes a material accumulation structure 50 arranged on the inner side wall of the rotating drum portion 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 portion 12, wherein the projection of the first material discharge section 312 on the preset plane 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 barrel wall of the rotating drum portion 12, it will corrode the barrel wall of the rotating drum portion 12. The arrangement of the material accumulation block 51 can make the mixed material accumulate on and near it, and then form a material accumulation layer on the part of the rotating drum portion 12 where the material accumulation structure 50 is arranged, so as to prevent the acid liquid from directly contacting the barrel wall of the rotating drum portion 12 and protect the barrel wall of the rotating drum portion 12. The projection of the first discharge section 312 on the preset plane and the projection of the second discharge section 322 on the preset plane both completely fall within the projection of the material accumulation structure 50 on the preset plane, that is, the projection of the first discharge section 312 on the preset plane and the projection of the second discharge section 322 on the preset plane both completely fall within the projection of the material accumulation layer on the preset plane, which can effectively protect the drum wall of the rotating drum portion 12.
[0056] like Figure 2 As shown, the projection of the first discharge section 312 and the projection of the second discharge section 322 on the preset plane both 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. The distance between the inner end of one of the first discharge section 312 and the second discharge section 322 away from the inlet end plate 13 and the inner end of the material accumulation structure 50 in the axial direction of the mixing barrel 10 is between 0.5m and 1m. When the black powder first comes into contact with the acid liquid, part of the black powder forms a viscous semi-solid block structure, while part of the black powder still maintains a powdery structure. If the above-mentioned viscous semi-solid block structure directly contacts the wall of the drum portion 12, it will still be corrosive to a certain extent and thus damage the drum wall. Therefore, the size of the accumulation structure 50 in the axial direction of the mixing drum 10 is set to be larger, and the first discharge section 312 and the second discharge section 322 are set corresponding to the front end of the accumulation structure 50, so that the initially mixed black powder and acid liquid are first mixed at the rear end of the accumulation layer for a period of time before contacting the drum wall of the drum portion 12. At this time, the mixed material is relatively dry and less corrosive, which can avoid corrosion of the drum wall of the drum portion 12 and avoid adhesion of the mixed material to the drum wall of the drum portion 12 as much as possible. Preferably, the distance between the inner end of one of the first and second discharge sections 312 and 322 that is away from the inlet end plate 13 and the inner end of the material accumulation structure 50 in the axial direction of the mixing barrel 10 may be 0.5 m, 0.75 m or 1 m.
[0057] It should be noted that the above-mentioned “inner end” refers to the end close to the center of the mixing barrel 10. Specifically, the “inner ends of the first discharging section 312 and the second discharging section 322” refers to the inner ends of the mixing barrel 10. Figure 2 The left end of the first discharge section 312 and the second discharge section 322; "the inner end of the accumulation structure 50" refers to Figure 2 The left end of the middle accumulation structure 50.
[0058] 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.
[0059] 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.
[0060] 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.
[0061] 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 cylinder (10) extending in a transverse direction and having a mixing chamber (11); A first feeding portion (20) is arranged at the entrance of the mixing chamber (11) and is used to convey solid materials into the mixing chamber (11); A second feeding portion (30) is arranged at the entrance of the mixing chamber (11) and is used to convey liquid material into the mixing chamber (11). The second feeding portion (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). A plurality of first discharging holes (313) are arranged on the side wall of the first discharging section (312). The second feeding pipe (32) includes a second conveying section (321) and a second discharging section (322). A plurality of second discharging holes are arranged on the side wall of the second discharging section (322). The first discharging section (312) and the second discharging section (322) do not overlap in the axial direction of the mixing barrel (10).
2. The mixing device according to claim 1, characterized in that: The length of the first discharge section (312) is between 0.4m and 1m; and / or the length of the second discharge section (322) is between 0.4m and 1m.
3. The mixing device according to claim 1, characterized in that: The first feed pipe (31) and the second feed pipe (32) are both located on a vertical plane passing through the axis of the mixing barrel (10); the first feed pipe (31) is located above the second feed pipe (32); the first conveying section (311) is located between the inlet of the mixing chamber (11) and the first discharge section (312); the second conveying section (321) is located between the inlet of the mixing chamber (11) and the second discharge section (322); the first discharge section (312) is arranged away from the inlet of the mixing chamber (11) relative to the second discharge section (322); or, The first feed pipe (31) and the second feed pipe (32) are located on the same horizontal plane and are arranged close to a vertical plane passing through the axis of the mixing barrel (10); the first conveying section (311) is located between the inlet of the mixing chamber (11) and the first discharging section (312); the second conveying section (321) is located between the inlet of the mixing chamber (11) and the second discharging section (322); and the first discharging section (312) is arranged away from the inlet of the mixing chamber (11) relative to the second discharging section (322).
4. The mixing device according to any one of claims 1 to 3, characterized in that A plurality of the first discharge holes (313) are arranged in an axial direction of the mixing barrel (10), wherein: The diameter of each of the first discharge holes (313) is between 2 mm and 8 mm; and / or, The center distance between each two adjacent first discharge holes (313) is between 2 cm and 10 cm.
5. The mixing device according to any one of claims 1 to 3, characterized in that: The plurality of first discharge holes (313) include a plurality of first hole structures (3131) and a plurality of second hole structures (3132), wherein the plurality of first hole structures (3131) are arranged along the axial direction of the mixing barrel (10) to form a first hole group, and the plurality of second hole structures (3132) are arranged along the axial direction of the mixing barrel (10) to form a second hole group, wherein the first hole group and the second hole group are respectively arranged on both sides of a vertical plane passing through the axis of the first feeding pipe (31).
6. The mixing device according to claim 5, characterized in that: The angle (a) between the line between the center of the first hole structure (3131) and the axis of the first feeding pipe (31) and the vertical direction is between 7.5° and 22.5°; and / or, The diameter of the first hole structure (3131) is between 2 mm and 5 mm; and / or, The center distance between two adjacent first hole structures (3131) is between 1.5 cm and 5 cm.
7. The mixing device according to claim 5, characterized in that: The plurality of first discharge holes (313) further include a plurality of third hole structures (3133), wherein the plurality of third hole structures (3133) are arranged along the axial direction of the mixing barrel (10) to form a third hole group, and the third hole group is located on a vertical plane passing through the axis of the first feed pipe (31); and / or, The first hole group and the second hole group are symmetrically arranged relative to a vertical plane passing through the axis of the first feed pipe (31).
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, and the rotating drum portion (12) is rotatably arranged; the first feeding portion (20) and the second feeding portion (30) are penetrated through the inlet end plate (13).
9. The mixing device according to claim 8, characterized in that: The mixing device further comprises a material introducing structure (40) arranged on the inner side wall of the rotating drum (12) and close to the inlet end plate (13), wherein: The material guide structure (40) includes a plurality of material guide plates (41) arranged at intervals along the circumferential direction of the rotating drum portion (12), and in the direction from the inlet end plate (13) to the outlet end plate (14), each of the material guide plates (41) extends in a direction away from the rotation direction of the rotating drum portion (12); and / or the first material discharge section (312) and the second material discharge section (322) are both located on a side of the material guide structure (40) away from the inlet end plate (13).
10. The mixing device according to claim 8, characterized in that: The liquid material includes acid liquid, and the mixing device also includes a material accumulation structure (50) arranged on the inner side wall of the rotating drum portion (12) and close to the inlet end plate (13), and 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 portion (12), wherein: The projection of the first material discharging section (312) on the preset plane and the projection of the second material discharging 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 barrel (10); or, The projection of the first discharge section (312) on the preset plane and the projection of the second 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 barrel (10), and the distance between the inner end of one of the first discharge section (312) and the second discharge section (322) away from the inlet end plate (13) and the inner end of the material accumulation structure (50) in the axial direction of the mixing barrel (10) is between 0.5m and 1m.