Solid-liquid mixing equipment and solid-liquid mixing system

Abstract

The invention provides solid-liquid mixing equipment and a solid-liquid mixing system. The solid-liquid mixing equipment comprises a machine shell, a stirring device, a liquid storage tank, a liquid storage tank and a liquid storage tank, the impeller is rotatably arranged in the material mixing cavity, one of the impeller and the machine shell is provided with a plurality of flow channels distributed in the circumferential direction, blades are arranged between the flow channels, the blades are provided with shearing grooves, the shearing grooves are distributed in the circumferential direction, the other one of the impeller and the machine shell is provided with shearing teeth, and when the impeller rotates, the shearing teeth penetrate through the flow channels and the shearing grooves; the impeller is further provided with a flow guide hole penetrating through the impeller and communicating with the flow channel. The powder-liquid mixing equipment solves the problem of poor slurry mixing effect of powder-liquid mixing equipment in the prior art.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid mixing technology, and more specifically, to a solid-liquid mixing device and a solid-liquid mixing system. Background Technology

[0002] In industrial raw material processing, the powder-liquid mixing process is essential, and obtaining uniformly mixed raw materials is paramount in this process. Since most powders used in emerging industries such as lithium batteries are ultrafine or nano-sized, a large amount of air is trapped on the surface and between the materials. When mixed with liquid, the gas-encapsulated powder will clump together and cannot mix well. If stirring is performed at this stage, these clumps cannot be properly broken up, resulting in an unevenly mixed and substandard finished slurry.

[0003] Currently, the industry typically uses a method where solvent is evenly divided into multiple portions and fed into a mixing chamber via a pre-defined trajectory at the inlet. Then, a feeding screw quantitatively feeds the powder into the mixing chamber. Within the slightly negative-pressure mixing chamber, air is first expelled from the powder surface and gaps through negative pressure and rotation. The two materials come into contact and are fully wetted within the mixing chamber. Next, a high-speed motor drives the rotor to generate a high tangential velocity, creating a significant velocity gradient within the narrow gap between the stator and rotor. The high-frequency mechanical effect and the resulting inter-cavity kinetic energy cause the material to undergo intense shearing, compression, and friction within the stator-rotor gap, resulting in a uniform and fine dispersion and mixing. However, existing methods still suffer from poor slurry mixing. Insufficiently kneaded slurry directly enters the next stage, leading to poor uniformity of the finished slurry or increased time to reach the standard viscosity, while also resulting in insufficient dispersion efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a solid-liquid mixing device and a solid-liquid mixing system to solve the problem of poor slurry mixing effect in existing powder-liquid mixing devices.

[0005] To achieve the above objectives, according to one aspect of the present invention, a solid-liquid mixing device is provided, comprising: a housing having a mixing chamber for mixing materials; an impeller rotatably disposed within the mixing chamber, one of the impeller and the housing having a plurality of circumferentially arranged flow channels, blades having shear grooves arranged circumferentially between the flow channels, the other of the impeller and the housing having shearing teeth, the shearing teeth passing through the flow channels and the shear grooves when the impeller rotates, and the impeller also having a through-hole communicating with the flow channels.

[0006] Furthermore, the impeller has a first side and a second side along its axial direction. Both the first side and the second side are provided with flow channels and shearing teeth. The flow channels on the first side and the second side are respectively used for different materials to be mixed.

[0007] Furthermore, the guide hole extends through the first side and the second side, and is connected to the flow channel on both the first side and the second side.

[0008] Furthermore, the first side includes an arcuate section and a straight section. The arcuate section is located in the inner ring of the straight section and extends away from the second side along the direction close to the impeller's central axis. The blade includes a first segment located in the arcuate section and a second segment located in the straight section, with the shear groove located in the second segment.

[0009] Furthermore, the shear grooves on the first and second sides are aligned along the axial direction of the impeller.

[0010] Furthermore, the flow guide hole is located in the straight section.

[0011] Furthermore, the impeller surface has flow channels and blades, the blades extend along the impeller surface and form an angle with the impeller axis, the inner wall of the mixing chamber has shearing teeth, there are multiple shearing teeth, and shearing teeth are provided on the inner walls of opposite ends of the mixing chamber.

[0012] Furthermore, multiple shearing teeth are respectively provided on the inner walls of the opposite ends of the mixing chamber, and the shearing teeth on the inner walls are spaced apart along the circumference of the impeller.

[0013] Furthermore, at least some of the blades have a spiral structure along the circumference of the impeller.

[0014] Furthermore, the housing includes a housing section, an upper stator, and a middle stator. The housing section has a receiving cavity, and the upper stator and the middle stator are located within the receiving cavity. The middle stator divides the receiving cavity into an axially arranged mixing cavity and a dispersing cavity. The upper stator and the middle stator form the mixing cavity. The inner ring of the middle stator has a central flow channel connecting the mixing cavity and the dispersing cavity. The surfaces of the upper stator and the middle stator facing the mixing cavity have shear grooves or shear teeth.

[0015] Furthermore, the housing also includes a lower stator, which is disposed within the housing portion and located on the side of the middle stator away from the upper stator. A dispersion cavity is formed between the lower stator and the middle stator, and the inner ring of the lower stator has a lower flow channel communicating with the dispersion cavity. The solid-liquid mixing device also includes a rotor, which is rotatably disposed within the dispersion cavity. A flow channel is formed between the circumferential edge of the rotor and the circumferential sidewall of the dispersion cavity. The rotor has a first surface facing the middle stator and a second surface facing the lower stator. One of the surfaces of the middle stator facing the rotor and the first surface has a first annular protrusion with a radially penetrating first shear flow channel. The other of the surfaces of the middle stator facing the rotor and the first surface has a first shear protrusion. One of the surfaces of the lower stator facing the rotor and the second surface has a second annular protrusion with a radially penetrating second shear flow channel. The other of the surfaces of the lower stator facing the rotor and the second surface has a second shear protrusion. When the rotor rotates, the first shear protrusion can switch between positions that block and avoid the first shear flow channel, and the second shear protrusion can switch between positions that block and avoid the second shear flow channel.

[0016] Furthermore, there are multiple first annular protrusions, which are sequentially arranged along the radial direction of the rotor; there are multiple first shear protrusions, at least some of which are spaced apart along the circumference of the rotor to form a first shear protrusion ring; and a first shear protrusion ring is provided between two radially adjacent first annular protrusions; and / or there are multiple second annular protrusions, which are sequentially arranged along the radial direction of the rotor; there are multiple second shear protrusions, at least some of which are spaced apart along the circumference of the rotor to form a second shear protrusion ring; and a second shear protrusion ring is provided between two radially adjacent second annular protrusions.

[0017] Furthermore, the first shear channel and / or the first shear channel forms an angle with the radial direction of the rotor.

[0018] Furthermore, the shell section has a solid feed inlet, a liquid feed inlet, and a discharge outlet. The solid feed inlet is located on the side of the mixing chamber away from the dispersion chamber and at the center of the impeller. The liquid feed inlet is located on the side of the dispersion chamber away from the mixing chamber. The discharge outlet is located on the circumferential side of the mixing chamber.

[0019] According to another aspect of the present invention, a solid-liquid mixing system is provided, including the solid-liquid mixing device described above; a circulation tank, the circulation tank being connected to the solid-liquid mixing device via a circulation pipeline, wherein the slurry mixed by the solid-liquid mixing device enters the circulation tank via the circulation pipeline and re-enters the solid-liquid mixing device via the circulation pipeline.

[0020] Furthermore, there are multiple circulation tanks, each of which is connected to the solid-liquid mixing equipment through circulation pipelines, and the circulation tanks are arranged in parallel.

[0021] Furthermore, the solid-liquid mixing system also includes a kneading device, which is connected to a circulation tank and can transport the initially kneaded slurry into the circulation tank.

[0022] Furthermore, there are multiple solid-liquid mixing devices, circulation pipelines, and circulation tanks. The solid-liquid mixing system also includes multiple circulation processing systems. Each circulation processing system includes solid-liquid mixing devices, circulation pipelines, and circulation tanks. The solid-liquid mixing system also includes connecting pipelines that are connected to multiple circulation processing systems simultaneously, so that the circulation processing systems can be connected through the connecting pipelines.

[0023] By applying the technical solution of this invention, a shear groove and shear teeth are provided between the casing and the impeller, enabling the impeller to exert a greater kneading effect during mixing, increasing the mixing intensity and kneading process, thereby improving the slurry mixing effect. Specifically, when the powder and liquid enter the mixing chamber, they contact, wet, and mix on both sides of the impeller and at the guide hole to form a preliminary slurry. This forced contact, wetting, and mixing at the designated location, i.e., the guide hole, is far more efficient than free contact mixing around the impeller. Simultaneously, due to the impeller's rotation, the pre-wetted and mixed slurry is thrown outward by centrifugal force, driven by the blades. At this point, the slurry comes into contact with the shear groove and shear teeth. The high-speed relative motion of the shear groove and shear teeth creates a significant turbulence on the slurry, increasing the residence time of the slurry in the mixing chamber and thus enhancing the kneading and mixing effect. The above method avoids the situation where ordinary impellers can only use blades to transport liquid and powder to the vicinity of the outer ring of the upper stator for short-term powder-liquid contact, resulting in almost no kneading effect and low efficiency. It increases the contact and wetting time during powder-liquid mixing, increases the mixing intensity and kneading process, improves the quality of the final slurry product, and also has a positive significance for improving efficiency. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 A schematic diagram of the solid-liquid mixing device of the present invention is shown;

[0026] Figure 2 It shows Figure 1 A schematic diagram of the impeller structure in the diagram;

[0027] Figure 3 It shows Figure 2 A bottom view of the impeller in the middle;

[0028] Figure 4 It shows Figure 1A schematic diagram of the structure of the stator in the middle;

[0029] Figure 5 It shows Figure 4 Another structural diagram of the stator in the middle;

[0030] Figure 6 It shows Figure 1 A schematic diagram of the upper stator structure in the middle;

[0031] Figure 7 It shows Figure 1 A cross-sectional view of the lower stator and rotor assembly.

[0032] Figure 8 It shows Figure 1 A schematic diagram of the rotor structure in the image;

[0033] Figure 9 A schematic diagram of another rotor structure is shown;

[0034] Figure 10 A schematic diagram of another type of lower stator structure is shown;

[0035] Figure 11 A schematic diagram of the solid-liquid mixing system in Example 1 is shown;

[0036] Figure 12 A schematic diagram of the solid-liquid mixing system in Example 2 is shown;

[0037] Figure 13 A schematic diagram of the solid-liquid mixing system in Example 3 is shown;

[0038] Figure 14 A schematic diagram of the solid-liquid mixing system in Example 4 is shown.

[0039] The above figures include the following reference numerals:

[0040] 10. Casing; 11. Mixing chamber; 12. Shearing teeth; 13. Shell section; 131. Solid feed inlet; 132. Liquid feed inlet; 133. Discharge outlet; 14. Upper stator; 141. Shearing protrusion; 15. Middle stator; 151. First shearing protrusion; 16. Dispersion chamber; 17. Lower stator; 171. Second shearing protrusion; 20. Impeller; 21. Flow channel; 22. Blade; 23. Shearing groove; 24. Guide hole; 25. Arc section; 26. Straight section; 30. Rotor; 31. Flow channel; 32. First annular protrusion; 321. First shearing flow channel; 33. Second annular protrusion; 331. Second shearing flow channel; 40. Circulation tank; 50. Circulation pipeline; 60. Connecting pipeline; 70. Kneading device. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0043] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0044] To address the problem of poor slurry mixing effect in existing powder-liquid mixing equipment, this invention provides a solid-liquid mixing device and a solid-liquid mixing system.

[0045] Example 1

[0046] like Figures 1 to 8 The solid-liquid mixing device shown includes a housing 10 and an impeller 20. The housing 10 has a mixing chamber 11 for mixing materials. The impeller 20 is rotatably disposed in the mixing chamber 11. One of the impeller 20 and the housing 10 has multiple circumferentially arranged flow channels 21. Blades 22 are arranged between the flow channels 21. The blades 22 have shear grooves 23, which are arranged circumferentially. The other of the impeller 20 and the housing 10 has shearing teeth 12. When the impeller 20 rotates, the shearing teeth 12 pass through each flow channel 21 and each shear groove 23.

[0047] This embodiment, by setting shear grooves 23 and shear teeth 12 between the casing 10 and the impeller 20, enables the impeller 20 to exert a greater kneading effect during mixing, increasing the mixing intensity and kneading process, thereby improving the slurry mixing effect. Specifically, when the powder and liquid enter the mixing chamber 11, they contact, wet, and mix on both sides of the impeller 20 and at the guide hole 24 to form a preliminary slurry. Thus, forced contact, wetting, and mixing at the designated location, i.e., the guide hole 24, is far more efficient than free contact mixing around the impeller 20. At the same time, due to the rotation of the impeller 20, the slurry that has undergone preliminary wetting and mixing is thrown outward by the blades 22 under the action of centrifugal force. At this time, the slurry will contact the shear grooves 23 and shear teeth 12. Due to the high-speed relative motion of the shear grooves 23 and shear teeth 12, a significant turbulence is formed on the slurry, thereby increasing the residence time of the slurry in the mixing chamber 11, and thus increasing the kneading and mixing effect. The above method avoids the situation where ordinary impeller 20 can only use the blades to transport liquid and powder to the vicinity of the outer ring of the upper stator for short powder-liquid contact, resulting in almost no kneading effect and low efficiency. It increases the contact and wetting time during powder-liquid mixing, increases the mixing intensity and kneading process, improves the quality of the final slurry product, and also has a positive significance for improving efficiency.

[0048] like Figure 2 and Figure 3 As shown, to further ensure sufficient mixing, this embodiment provides shearing teeth 12 and shearing grooves 23 on both axial sides of the impeller 20. Specifically, the impeller 20 has a first side and a second side along its axial direction. Both the first and second sides are provided with flow channels 21 and shearing teeth 12. The flow channels 21 on the first side and the second side respectively allow different materials to be mixed to pass through. In this way, after the powder and liquid are initially mixed at the guide hole 24, they can cooperate with the shearing teeth 12 and shearing grooves 23 on either side under the action of the impeller 20. This ensures that no matter which side the slurry is thrown to under the action of the impeller 20, it can cooperate with the shearing teeth 12 and shearing grooves 23, thereby ensuring the mixing effect of the slurry.

[0049] For ease of explanation, in this embodiment, the first side channel 21 is used as the powder inlet channel 21, and the second side channel 21 is used as the liquid inlet channel 21. Considering the gravity of the liquid, in this embodiment, the area below the impeller 20 is designated as the second side, and the area above it as the first side. Thus, in use, the powder is added into the first channel 21 through the solid feed inlet 131 above the impeller 20, and the liquid is injected into the second channel 21 through the liquid feed inlet 132 below. Of course, the above configuration can be adjusted as needed, as long as the injection and mixing of powder and liquid can be achieved.

[0050] Meanwhile, this embodiment adopts the form of setting flow channels 21, blades 22 and shear grooves 23 on the impeller 20, and setting shearing teeth 12 inside the casing 10. That is, in this embodiment, blades 22 are set on both the upper and lower sides of the impeller 20, and flow channels 21 are formed between the blades 22. Shear grooves 23 are opened on the blades 22. The top surface and left and right sides of the shear grooves 23 of the upper blade 22 are open, and the bottom surface and left and right sides of the lower blade 22 are open. In this way, when the impeller 20 rotates, the shearing teeth 12 can rotate relative to the shear grooves 23, and the shearing teeth 12 can pass through each shear groove 23 and shuttle between each flow channel 21.

[0051] Since this embodiment has flow channels 21 on both sides, the guide hole 24 actually penetrates both the first side and the second side and is connected to the flow channels 21 on both the first side and the second side. In this way, the powder on the first side and the liquid on the second side can be transported to the guide hole 24 through their respective flow channels 21, so as to carry out preliminary mixing at the guide hole 24.

[0052] Of course, in addition to providing shearing teeth 12 and shearing grooves 23 on both sides of the impeller 20, shearing grooves 23 and shearing teeth 12 can also be provided only on one side of the impeller 20, that is, shearing grooves 23 and shearing teeth 12 can be provided only on the first or second side. At the same time, the positions of shearing grooves 23 and shearing teeth 12 can also be interchanged. That is, the flow channel 21, blades 22 and shearing grooves 23 can be provided on the inner wall of the casing 10, and the shearing teeth 12 can be provided on the impeller 20. In this way, there is still a flow channel 21 for material conveying, and there is still a shearing groove 23 and shearing teeth 12 working together, thereby achieving the purpose of improving the mixing effect.

[0053] In this embodiment, considering the differences between powder conveying and liquid conveying, the first side is not planar. Specifically, the first side includes an arc segment 25 and a straight segment 26. The arc segment 25 is located within the inner ring of the straight segment 26 and extends away from the second side along the direction close to the central axis of the impeller 20. That is, the arc segment 25 has a higher height at the center of the impeller 20 and a lower height at the edge. The straight segment 26 connects to the peripheral edge of the arc segment 25, thus giving the first side a certain curvature. Correspondingly, the blade 22 includes a first segment located in the arc segment 25 and a second segment located in the straight segment 26, so that the shape of the blade 22 matches the shape of the first side. Therefore, the shape of the flow channel 21 between the blades 22 is not planar, but a combination of arc and planar structures. The shear groove 23 is located in the second segment. In this way, the aforementioned structural form on the first side facilitates powder conveying. Simultaneously, since the shear groove 23 and shear teeth 12 are located near the outer periphery of the impeller 20, the slurry under the centrifugal force of the impeller 20 can impact the shear groove 23 and shear teeth 12 with greater force, thereby improving the mixing effect. At the same time, during rotation, a stepped velocity difference is formed at different positions of the blades 22, creating multiple vortices and turbulence, further increasing the kneading effect and dispersion efficiency.

[0054] Unlike the first side described above, the second side surface in this embodiment is set as an integral plane, and the liquid flows radially outward from the center of the second side through the second flow channel 21.

[0055] Of course, the specific structural forms of the first and second sides can also be adjusted as needed. For example, both the first and second sides can be set as planes, or the second side can be set as a structure that is symmetrical to the first side vertically.

[0056] Preferably, in this embodiment, the shear groove 23 on the first side and the shear groove 23 on the second side are aligned axially along the impeller 20. Correspondingly, the shear teeth 12 on the inner wall of the housing 10 are also aligned axially, thus ensuring that the vertical positions of the shear groove 23 and the shear teeth 12 are aligned, thereby ensuring a stable and uniform turbulence effect on the slurry.

[0057] Since the shear groove 23 is located on the straight section 26, in this embodiment, the guide hole 24 is also set on the straight section 26, so that the position of the shear groove 23 corresponds to the position of the guide hole 24. In this embodiment, the shear groove 23 and the guide hole 24 are preferably aligned along the circumference of the impeller 20, that is, the guide hole 24 is located between two adjacent shear grooves 23 in the circumferential direction, so as to ensure that the initially mixed slurry can be subjected to the action of the shear groove 23 and the shear teeth 12 and be fully mixed, thus ensuring the mixing effect. At the same time, the thickness of the straight section 26 on the impeller 20 is thinner than that of the arc section 25, which also facilitates the processing of the guide hole 24.

[0058] In this embodiment, due to the arrangement of the first side of the impeller 20, when the blades 22 on the first side extend along the surface of the impeller 20, the blades 22 and the axis of the impeller 20 also form an angle, and the angle is not 90 degrees, thus making the shape of the blades 22 match the arrangement of the first side. Of course, when the shape of the first side is adjusted, for example, when the first side is set as a plane, the shape of the blades 22 can also be adjusted accordingly, as long as it matches the arrangement of the first side. Similarly, the arrangement of the blades 22 on the second side also matches the shape of the second side.

[0059] Optionally, the number of shearing teeth 12 can be set as needed, and one or more shearing teeth 12 can be set on one side of the impeller 20. Considering the mixing effect, this embodiment preferably sets multiple shearing teeth 12, and shearing teeth 12 are set on the inner walls of the opposite ends of the mixing chamber 11, that is, on the upper and lower sides of the impeller 20. Multiple shearing teeth 12 are respectively set on the inner walls of the opposite ends of the mixing chamber 11, that is, on the upper and lower sides of the impeller 20. The shearing teeth 12 on each side are spaced apart along the circumference of the impeller 20, thus forming a ring arrangement. This can be matched with the form of the shearing groove 23 to ensure the mixing effect.

[0060] At least some of the blades 22 in this embodiment have a helical structure along the circumference of the impeller 20. Specifically, since the flow channel 21 on the first side of this embodiment is used for powder conveying, the impeller 20 on the first side is configured as a helical structure, and the direction of the helical structure matches the rotation direction of the impeller 20, so that the blades 22 can further increase the centrifugal force of the slurry, thereby improving the mixing effect. Of course, the shape of the blades 22 can also be configured as a straight line or other forms. The blades 22 on the second side can be configured to extend radially or as a helical extension. In this embodiment, it is preferable that both the blades 22 on the first side and the blades 22 on the second side are helical and their twist angles are different, so that the slurry coming from the bottom can be sucked up and the powder falling from the top can be carried into the peripheral edge.

[0061] like Figure 1As shown, in this embodiment, the housing 10 includes a housing portion 13, an upper stator 14, and a middle stator 15. The housing portion 13 has a relatively large receiving cavity. The upper stator 14 and the middle stator 15 are both fixedly disposed within the receiving cavity. The middle stator 15 divides the receiving cavity into an axially arranged mixing cavity 11 and a dispersing cavity 16. The upper stator 14 and the middle stator 15 form the mixing cavity 11. In this embodiment, the mixing cavity 11 is disposed at the top, and the dispersing cavity 16 is disposed at the bottom. Of course, more cavities can be added as needed. Since the middle stator 15 is the main component separating the mixing cavity 11 and the dispersing cavity 16, in this embodiment, the middle stator 15 cooperates with the upper stator 14 above and the rotor 30 below. Based on this, the inner ring of the stator 15 in this embodiment has a central flow channel connecting the mixing chamber 11 and the dispersion chamber 16, so that the liquid in the lower dispersion chamber 16 can enter the inlet at the center of the flow channel 21 on the second side of the impeller 20 through the central flow channel, and then flow radially towards the edge of the impeller 20, and initially mix with the powder at the guide hole 24, and fully mix under the action of the shearing teeth 12 and the shearing groove 23, and then be discharged from the discharge port 133 on the peripheral side of the mixing chamber 11. Figures 4 to 6 As shown, since the upper stator 14 and the middle stator 15 form the mixing chamber 11, the surfaces of the upper stator 14 and the middle stator 15 facing the mixing chamber 11 have shearing teeth 12, which cooperate with the shearing grooves 23 on both sides of the impeller 20.

[0062] like Figure 6 As shown, in this embodiment, shearing protrusions 141 are also provided on the lower surface of the upper stator 14, and shearing channels are formed between the shearing protrusions 141. The shearing protrusions 141 are farther away from the center of the upper stator 14 than the shearing teeth 12 of the upper stator 14, so that the shearing protrusions 141 are located on the outside of the upper stator 14. In this way, the slurry mixed by the shearing teeth 12 will pass through the shearing channels again before being discharged from the discharge port 133, thereby further improving the mixing effect.

[0063] like Figure 1As shown, in this embodiment, the housing 10 also includes a lower stator 17, which is disposed within the housing portion 13. The lower stator 17 is located on the side of the middle stator 15 away from the upper stator 14, and a dispersion cavity 16 is formed between the lower stator 17 and the middle stator 15. The main function of the dispersion cavity 16 is to shear and disperse the slurry before the liquid is introduced into the mixing cavity 11 for mixing, thereby improving the mixing effect when mixed with powder later. In this embodiment, a lower flow channel communicating with the dispersion cavity 16 is provided in the inner ring of the lower stator 17. The lower flow channel can communicate with the liquid inlet 132 at the bottom of the housing portion 13, thereby realizing the introduction of liquid. The solid-liquid mixing device also includes a rotor 30, which is rotatably disposed in the dispersion chamber 16. A flow channel 31 is formed between the circumferential edge of the rotor 30 and the circumferential sidewall of the dispersion chamber 16. The rotor 30 is divided into upper and lower layers, which are connected by the flow channel 31. The lower layer is connected to the lower channel, and the upper layer is connected to the middle channel. In this way, the liquid entering the lower layer of the rotor 30 from the lower channel flows radially outward from the center of the rotor 30. As it is continuously introduced, the liquid flows upward through the flow channel 31 until it flows into the center of the rotor 30. Then, it enters the center of the second side of the impeller 20 through the middle channel and flows radially towards the outer periphery of the impeller 20. Finally, it mixes with the powder at the guide hole 24 to form a further slurry, and then is discharged from the discharge port 133 on the side of the mixing chamber 11, completing one mixing process.

[0064] The dispersion cavity 16 in this embodiment is not a simple cavity. For ease of explanation, the rotor 30 in this embodiment has a first surface facing the middle stator 15 and a second surface facing the lower stator 17. According to the arrangement in this embodiment, the upper surface of the rotor 30 is the first surface, and the lower surface is the second surface. Figures 4 to 8 As shown, the middle stator 15 has a first annular protrusion 32 on one of its surface facing the rotor 30 and the first surface. The first annular protrusion 32 has a radially penetrating first shear channel 321. The middle stator 15 has a first shear protrusion 151 on the other of its surface facing the rotor 30 and the first surface. The lower stator 17 has a second annular protrusion 33 on one of its surface facing the rotor 30 and the second surface. The second annular protrusion 33 has a radially penetrating second shear channel 331. The lower stator 17 has a second shear protrusion 171 on the other of its surface facing the rotor 30 and the second surface. When the rotor 30 rotates, the first shear protrusion 151 can switch between blocking and avoiding the first shear channel 321, and the second shear protrusion 171 can switch between blocking and avoiding the second shear channel 331.

[0065] Specifically, such as Figure 4 and Figure 5 As shown, in this embodiment, a first shearing protrusion 151 is provided on the lower surface of the stator 15; as Figure 8As shown, the upper and lower surfaces of the rotor 30 are respectively provided with a first annular protrusion 32 and a second annular protrusion 33; Figure 7 As shown, a second shearing protrusion 171 is provided on the upper surface of the lower stator 17. The first annular protrusion 32 and the second annular protrusion 33 respectively have a first shearing channel 321 and a second shearing channel 331 that radially penetrate both the inner and outer sides. The first shearing protrusion 151 is radially and inwardly fitted with the first annular protrusion 32, and the second shearing protrusion 171 is radially and inwardly fitted with the second annular protrusion 33. Thus, when the rotor 30 rotates, the first shearing protrusion 151 can switch between blocking and avoiding the first shearing channel 321, and the second shearing protrusion 171 can switch between blocking and avoiding the second shearing channel 331. This cooperation between the first shearing protrusion 151 and the first shearing channel 321, and the second shearing protrusion 171 and the second shearing channel 331, achieves shearing and dispersion of the mortar. Figure 1 As indicated by the middle arrow, when the mortar flows from the lower layer to the upper layer of the rotor 30, the rotor 30 needs to pass through each of the second shear channels 331 in the lower layer. The shearing of the lower layer flow is achieved through the cooperation of the second shear protrusion 171 and the second shear channel 331. When flowing to the upper layer, it needs to pass through the first shear channel 321. The shearing of the upper layer flow is achieved through the cooperation of the first shear protrusion 151 and the first shear channel 321. This helps to increase the number of shear dispersions and improve the shearing effect. Of course, the positions of the internal structures of the two sets of cooperation structures—between the first shear protrusion 151 and the first shear channel 321, and between the second shear protrusion 171 and the second shear channel 331—can be interchanged. For example, the first annular protrusion 32 can be provided on the lower surface of the stator 15, and the first shear protrusion 151 can be provided on the upper surface of the rotor 30.

[0066] In this embodiment, there are multiple first annular protrusions 32, which are sequentially arranged along the radial direction of the rotor 30. There are multiple first shearing protrusions 151, and at least some of the first shearing protrusions 151 are spaced apart along the circumference of the rotor 30 to form a first shearing protrusion ring. A first shearing protrusion ring is provided between each two radially adjacent first annular protrusions 32. Similarly, there are multiple second annular protrusions 33, which are sequentially arranged along the radial direction of the rotor 30. There are multiple second shearing protrusions 171, and at least some of the second shearing protrusions 171 are spaced apart along the circumference of the rotor 30 to form a second shearing protrusion ring. A second shearing protrusion ring is provided between each two radially adjacent second annular protrusions 33. Taking the first annular protrusion 32 and the first shearing protrusion 151 as examples, multiple first annular protrusions 32 can be provided, each with a different diameter. They are arranged sequentially along the radial direction of the rotor 30 according to their diameter. Each first annular protrusion 32 has multiple first shearing channels 321 evenly distributed circumferentially. Correspondingly, there are also multiple first shearing protrusions 151. Some of the first shearing protrusions 151 are arranged circumferentially at equal intervals to form a first shearing protrusion ring. Multiple first shearing protrusion rings are formed, also arranged sequentially along the radial direction of the rotor 30 using the same arrangement as the first annular protrusions 32. The first shearing protrusion rings are inserted into the gaps between two adjacent first annular protrusions 32. In this way, the mortar can be sheared multiple times according to the number of first shearing protrusion rings and first annular protrusions 32, thereby increasing the number of shearing operations and improving the shearing effect. The specific number of layers of first shearing protrusion rings and first annular protrusions 32 can be set as needed, matching the number of shearing operations required. In addition to setting a first shearing protrusion ring between two adjacent first annular protrusions 32, an additional first shearing protrusion ring can be set outside or inside the outermost or innermost first annular protrusion 32, so that the first shearing protrusion rings correspond one-to-one with the first annular protrusions 32, forming a radially alternating arrangement. The arrangement of the second shearing protrusion 171 and the second shearing protrusion ring is similar to that described above, and will not be repeated.

[0067] It should be noted that the first annular protrusion 32 and the first shear protrusion ring can form the same structural form, that is, the circumferential sides of each of the first shear protrusions 151 of the first shear protrusion ring are partially connected to each other, so that the first shear protrusion ring also forms a structural form similar to the first annular protrusion 32, with shear channels opened on the annular protrusion. The second shear protrusion ring can also adopt the above form. In this embodiment, the structural forms of the first annular protrusion 32, the first shear protrusion ring, the second annular protrusion 33, and the second shear protrusion ring are basically the same. Of course, the circumferential sides of each of the first shear protrusions 151 of the first shear protrusion ring may not be connected, and gaps may be formed between their circumferential sides. When the first shear protrusion 151 blocks the first shear channel 321, the first annular protrusion 32 also blocks the gaps between the first shear protrusions 151.

[0068] Optionally, the penetration direction of the first shear channel 321 and the second shear channel 331 can be completely along the radial direction of the rotor 30, or approximately along the radial direction of the rotor 30. That is, the penetration direction of the first shear channel 321 and the second shear channel 331 can be deflected from the radial direction of the rotor 30 to form a certain angle, such as... Figure 9 and Figure 10 As shown, this improves the shearing effect. At this time, the directions of the relative radial deflection angles of the first shear channel 321 and the second shear channel 331 can be the same or opposite.

[0069] like Figure 1 As shown, the housing 13 of this embodiment has three externally connected openings: a solid feed inlet 131, a liquid feed inlet 132, and a discharge outlet 133. The solid feed inlet 131 is located on the side of the mixing chamber 11 away from the dispersion chamber 16 and at the center of the impeller 20. The solid feed inlet 131 is positioned at the center of the upper part of the impeller 20, allowing powder to be added to the center of the flow channel 21 on the first side of the impeller 20. A stirring structure can be installed at the solid feed inlet 131 to agitate the powder, thus facilitating feeding. The liquid feed inlet 132 is located on the side of the dispersion chamber 16 away from the mixing chamber 11. The liquid feed inlet 132 is located on the bottom side of the housing 13 and communicates with the lower flow channel through a channel, allowing liquid to be introduced into the dispersion chamber 16 and the mixing chamber 11. The discharge outlet 133 is located on the circumferential side of the mixing chamber 11, allowing the mixed slurry to be discharged directly from the discharge outlet 133.

[0070] like Figure 11 As shown, this embodiment also provides a solid-liquid mixing system, including the aforementioned solid-liquid mixing equipment and a circulation tank 40. The circulation tank 40 is connected to the solid-liquid mixing equipment via a circulation pipeline 50. The slurry mixed in the solid-liquid mixing equipment enters the circulation tank 40 via the circulation pipeline 50 and then re-enters the solid-liquid mixing equipment via the circulation pipeline 50. In this embodiment, the solid-liquid mixing equipment mainly functions to knead the powder and liquid for subsequent fine dispersion, while the circulation tank 40 serves a circulation function. The circulation pipeline 50 essentially comprises two parts: a first pipeline located between the outlet 133 of the solid-liquid mixing equipment and the inlet of the circulation tank 40, and a second pipeline located between the liquid inlet 132 of the solid-liquid mixing equipment and the outlet of the circulation tank 40, thereby realizing the circulation of the slurry between the solid-liquid mixing equipment and the circulation tank 40.

[0071] In operation, the solvent liquid is added to the circulation tank 40, and then the circulation process begins in the sequence of circulation tank 40 - solid-liquid mixing device - circulation tank 40. During the circulation, powder can be added to the solid feed inlet 131 through the hopper, causing the powder and solvent liquid to be kneaded into a slurry in the solid-liquid mixing device. The slurry is then circulated back to circulation tank 40 and then back to the solid-liquid mixing device. While being dispersed, powder is added to the solid-liquid mixing device again, continuously increasing the solid content in the slurry. Once the target solid content is reached, the powder feeding stops. This completes a single cycle aimed at dispersion and uniformity, ultimately yielding a qualified slurry. This method allows for better kneading of the slurry per unit time, reducing the time and power consumption required for subsequent dispersion steps. Furthermore, the initial kneading effect directly affects the agglomeration and sieving rate of the finished slurry.

[0072] Example 2

[0073] The difference from Example 1 lies in the different structural form of the solid-liquid mixing system.

[0074] like Figure 12 As shown, in this embodiment, there are multiple circulation tanks 40, each of which is connected to the solid-liquid mixing equipment via a circulation pipeline 50, and the circulation tanks 40 are arranged in parallel. Multiple circulation pipelines 50 can be provided as needed, with different solid-liquid mixing devices connected to the same device via corresponding circulation pipelines 50. Alternatively, the circulation pipelines 50 can be configured with a multi-branch structure, such as a tee or cross, allowing multiple circulation tanks 40 to connect to different interfaces of the circulation pipelines 50, thereby achieving communication with the solid-liquid mixing equipment. Valves and other components can be installed on the circulation pipelines 50 as needed to control the delivery of the slurry to the equipment. In this embodiment, the solid-liquid mixing equipment mainly functions to knead the powder and liquid and then perform subsequent fine dispersion.

[0075] Taking a setup with two circulation tanks 40 as an example, referred to as the first circulation tank 40 and the second circulation tank 40 for ease of explanation. In use, the initial process is basically the same as in Example 1: the solvent liquid is added to the first circulation tank 40, and then the circulation process of first circulation tank 40 - solid-liquid mixing device - first circulation tank 40 begins. During this process, powder is added to the solid feed inlet 131 through the hopper, causing the powder and solvent liquid to be kneaded into a slurry in the solid-liquid mixing device. This slurry is then circulated back to circulation tank 40 and then back to the solid-liquid mixing device. While being dispersed, powder is added again to the solid-liquid mixing device, continuously increasing the solid content in the slurry until the target solid content is reached, at which point the powder discharge stops. Then, a dual circulation process is initiated: the slurry flows from first circulation tank 40 - solid-liquid mixing device - second circulation tank 40 - solid-liquid mixing device - first circulation tank 40. The purpose of this is to ensure that each portion of slurry in the first circulation tank 40 is dispersed by a solid-liquid mixing device before going to the second circulation tank 40, and then each portion of slurry in the second circulation tank 40 is processed by a solid-liquid mixing device before going to the first circulation tank 40. This ensures that each portion of slurry undergoes the same number of shearing times and shearing force, thus guaranteeing the uniformity of the slurry.

[0076] Example 3

[0077] The difference from Example 1 lies in the different structural form of the solid-liquid mixing system.

[0078] like Figure 13 As shown, in this embodiment, the solid-liquid mixing system further includes a kneading device 70, which is connected to the circulation tank 40 and can transport the initially kneaded slurry into the circulation tank 40. The cooperation between the circulation tank 40 and the solid-liquid mixing device is basically the same as in Embodiment 1. The main function of the solid-liquid mixing device in this embodiment is to further refine, disperse, and deagglomerate the already formed slurry.

[0079] Specifically, the main function of the kneading device 70 in this embodiment is to force the solvent and powder to compress and synthesize them into a slurry, and then transport the slurry to the circulation system for a single cycle of circulation tank 40-solid-liquid mixing device-circulation tank 40, so that the initially kneaded slurry is dispersed and processed by the solid-liquid mixing device into a fine and uniform qualified finished slurry.

[0080] Example 4

[0081] The difference from Example 1 lies in the different structural form of the solid-liquid mixing system.

[0082] like Figure 14As shown, in this embodiment, there are multiple solid-liquid mixing devices, circulation pipelines 50, and circulation tanks 40. The solid-liquid mixing system also includes multiple circulation processing systems, each of which includes a solid-liquid mixing device, a circulation pipeline 50, and a circulation tank 40. The solid-liquid mixing system also includes a connecting pipeline 60, which connects to multiple circulation processing systems simultaneously, allowing the circulation processing systems to be connected via the connecting pipeline 60. In this embodiment, both ends of the connecting pipeline 60 are connected to the first pipelines of the circulation pipelines 50 of two circulation processing systems, respectively. This allows the slurry in one circulation processing system to be transported through its first pipeline and connecting pipeline 60 to the first pipeline of another circulation processing system under the action of its solid-liquid mixing device, thereby achieving circulation within that other circulation processing system. Of course, the connecting pipeline 60 can also be connected to other equipment or structures, as long as it can connect two circulation processing systems and allow the slurry to be transported from one circulation processing system to another.

[0083] This embodiment uses two circulating processing systems as an example. Each circulating processing system includes a solid-liquid mixing device, a circulating pipeline 50, and a circulating tank 40. The arrangement of the solid-liquid mixing device, the circulating pipeline 50, and the circulating tank 40 can refer to the arrangement in Embodiment 1. For the sake of subsequent explanation, the two circulating processing systems are referred to as the first circulating processing system and the second circulating processing system, respectively, and their solid-liquid mixing device, circulating pipeline 50, and circulating tank 40 are also named as first and second, respectively. The solid-liquid mixing device in this embodiment simultaneously performs the functions of initial kneading and preliminary dispersion of powder and liquid, as well as further fine dispersion of slurry.

[0084] In operation, the first and second circulation processing systems work simultaneously. In the first circulation processing system, the powder above and the solvent in the first circulation tank 40 are kneaded into a slurry through multiple single-cycle steps in the first circulation tank 40-first solid-liquid mixing device-first circulation tank 40, and the slurry is initially dispersed. After the powder is discharged, the slurry is transferred to the second circulation tank 40 of the second circulation processing system via the drive of the first solid-liquid mixing device and the connecting pipeline 60. Then, it undergoes multiple single-cycle steps in the second circulation tank 40-second solid-liquid mixing device-second circulation tank 40 to initiate the fine dispersion process.

[0085] During the operation of the second circulation processing system, since the first circulation processing system has already completed the initial kneading and preliminary dispersion, it is now idle. Therefore, the first circulation tank 40 and the first solid-liquid mixing equipment can be fed and the single-cycle process restarted while the second circulation processing system is operating. When the first circulation processing system completes the powder feeding and kneading process again, the slurry in the second circulation processing system has already completed fine dispersion and can be discharged downstream. At this point, the second circulation processing system can again receive the slurry from the first circulation processing system for further fine dispersion. In this way, the first and second circulation processing systems can operate continuously and simultaneously, significantly shortening the overall processing time and increasing efficiency by 80-95%.

[0086] It should be noted that "multiple" in the above embodiments refers to at least two.

[0087] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0088] 1. It solves the problem of poor slurry mixing effect in existing powder-liquid mixing equipment;

[0089] 2. The increased contact and wetting time during powder-liquid mixing enhances mixing intensity and kneading process, thereby improving the quality of the final slurry product and positively impacting efficiency.

[0090] 3. Without increasing the number of cycles, the mixing of the slurry is further refined, saving resources and costs, and can produce higher quality slurry within a certain period of time, greatly improving the quality of the finished slurry.

[0091] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0092] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0093] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0094] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A solid-liquid mixing device, characterized in that, include: The housing (10) has a mixing chamber (11) for mixing materials; An impeller (20) is rotatably disposed in the mixing chamber (11). One of the impeller (20) and the housing (10) has multiple circumferentially arranged flow channels (21). Blades (22) are disposed between the flow channels (21). Each blade (22) has a shearing groove (23). Each shearing groove (23) is circumferentially arranged. The other of the impeller (20) and the housing (10) has shearing teeth (12). When the impeller (20) rotates, the shearing teeth (12) pass through each flow channel (21) and each shearing groove (23). The impeller (20) also has a through-hole (24) that communicates with the flow channels (21).

2. The solid-liquid mixing device according to claim 1, characterized in that, The impeller (20) has a first side and a second side along its axial direction. Both the first side and the second side are provided with the flow channel (21) and the shearing teeth (12). The flow channel (21) on the first side and the flow channel (21) on the second side are respectively for different materials to be mixed to pass through.

3. The solid-liquid mixing device according to claim 2, characterized in that, The guide hole (24) passes through the first side and the second side, and is connected to the flow channel (21) on the first side and the flow channel (21) on the second side.

4. The solid-liquid mixing device according to claim 2, characterized in that, The first side includes an arcuate segment (25) and a straight segment (26). The arcuate segment (25) is located in the inner ring of the straight segment (26) and extends in a direction close to the central axis of the impeller (20). The arcuate segment (25) extends away from the second side. The blade (22) includes a first segment located in the arcuate segment (25) and a second segment located in the straight segment (26). The shear groove (23) is located in the second segment.

5. The solid-liquid mixing device according to claim 4, characterized in that, The shear groove (23) on the first side and the shear groove (23) on the second side are aligned along the axial direction of the impeller (20).

6. The solid-liquid mixing device according to claim 4, characterized in that, The flow guide hole (24) is located in the straight section (26).

7. The solid-liquid mixing device according to claim 1, characterized in that, The impeller (20) has the flow channel (21) and the blade (22) on its surface. The blade (22) extends along the surface of the impeller (20) and forms an angle with the axis of the impeller (20). The inner wall of the mixing chamber (11) has the shearing teeth (12). There are multiple shearing teeth (12), and the shearing teeth (12) are provided on the inner walls of the two opposite ends of the mixing chamber (11).

8. The solid-liquid mixing device according to claim 7, characterized in that, Multiple shearing teeth (12) are respectively provided on the inner walls of the opposite ends of the mixing chamber (11), and the shearing teeth (12) on the inner wall are spaced apart along the circumference of the impeller (20).

9. The solid-liquid mixing device according to claim 7, characterized in that, At least a portion of the blades (22) have a spiral structure along the circumference of the impeller (20).

10. The solid-liquid mixing device according to claim 1, characterized in that, The housing (10) includes a housing portion (13), an upper stator (14), and a middle stator (15). The housing portion (13) has a receiving cavity. The upper stator (14) and the middle stator (15) are located in the receiving cavity. The middle stator (15) divides the receiving cavity into an axially arranged mixing cavity (11) and a dispersing cavity (16). The upper stator (14) and the middle stator (15) form the mixing cavity (11). The inner ring of the middle stator (15) has a central flow channel connecting the mixing cavity (11) and the dispersing cavity (16). The surfaces of the upper stator (14) and the middle stator (15) facing the mixing cavity (11) have the shearing groove (23) or the shearing teeth (12).

11. The solid-liquid mixing device according to claim 10, characterized in that, The housing (10) further includes a lower stator (17), which is disposed inside the housing portion (13). The lower stator (17) is located on the side of the middle stator (15) away from the upper stator (14), and the dispersion cavity (16) is formed between the lower stator (17) and the middle stator (15). The inner ring of the lower stator (17) has a lower flow channel communicating with the dispersion cavity (16). The solid-liquid mixing device further includes a rotor (30), which is rotatably disposed within the dispersion chamber (16), and a flow channel (31) is formed between the circumferential edge of the rotor (30) and the circumferential sidewall of the dispersion chamber (16). The rotor (30) has a first surface facing the middle stator (15) and a second surface facing the lower stator (17). One of the surfaces of the middle stator (15) facing the rotor (30) and the first surface has a first annular protrusion (32), and the first annular protrusion (32) has a radially penetrating first shear channel (321). The other has a first shearing protrusion (151), and the lower stator (17) has a second annular protrusion (33) on one of the surfaces facing the rotor (30) and the second surface. The second annular protrusion (33) has a radially penetrating second shearing channel (331). The lower stator (17) has a second shearing protrusion (171) on the other of the surfaces facing the rotor (30) and the second surface. When the rotor (30) rotates, the first shearing protrusion (151) can switch between blocking and avoiding the first shearing channel (321), and the second shearing protrusion (171) can switch between blocking and avoiding the second shearing channel (331).

12. The solid-liquid mixing device according to claim 11, characterized in that, There are multiple first annular protrusions (32), which are sequentially arranged along the radial direction of the rotor (30). There are multiple first shearing protrusions (151), and at least some of the first shearing protrusions (151) are arranged at intervals along the circumference of the rotor (30) to form a first shearing protrusion ring. A first shearing protrusion ring is provided between each two radially adjacent first annular protrusions (32); and / or There are multiple second annular protrusions (33), which are sequentially arranged along the radial direction of the rotor (30). There are multiple second shear protrusions (171), and at least some of the second shear protrusions (171) are arranged at intervals along the circumference of the rotor (30) to form a second shear protrusion ring. A second shear protrusion ring is arranged between two radially adjacent second annular protrusions (33).

13. The solid-liquid mixing device according to claim 11, characterized in that, The first shear channel (321) and / or the first shear channel (321) forms an angle with the radial direction of the rotor (30).

14. The solid-liquid mixing device according to claim 10, characterized in that, The housing part (13) has a solid feed inlet (131), a liquid feed inlet (132) and a discharge outlet (133). The solid feed inlet (131) is located on the side of the mixing chamber (11) away from the dispersion chamber (16) and at the center of the impeller (20). The liquid feed inlet (132) is located on the side of the dispersion chamber (16) away from the mixing chamber (11). The discharge outlet (133) is located on the circumferential side of the mixing chamber (11).

15. A solid-liquid mixing system, characterized in that, include: The solid-liquid mixing apparatus according to any one of claims 1 to 14; The circulation tank (40) is connected to the solid-liquid mixing equipment through the circulation pipeline (50). The slurry after being mixed by the solid-liquid mixing equipment enters the circulation tank (40) through the circulation pipeline (50) and then re-enters the solid-liquid mixing equipment through the circulation pipeline (50).

16. The solid-liquid mixing system according to claim 15, characterized in that, There are multiple circulation tanks (40), each of which is connected to the solid-liquid mixing device through the circulation pipeline (50), and the circulation tanks (40) are arranged in parallel.

17. The solid-liquid mixing system according to claim 15, characterized in that, The solid-liquid mixing system also includes a kneading device (70), which is connected to the circulation tank (40) and can transport the initially kneaded slurry into the circulation tank (40).

18. The solid-liquid mixing system according to claim 15, characterized in that, The solid-liquid mixing device, the circulation pipeline (50) and the circulation tank (40) are multiple. The solid-liquid mixing system also includes multiple circulation processing systems. Each circulation processing system includes the solid-liquid mixing device, the circulation pipeline (50) and the circulation tank (40). The solid-liquid mixing system also includes a connecting pipeline (60). The connecting pipeline (60) is connected to multiple circulation processing systems at the same time, so that the circulation processing systems are connected to each other through the connecting pipeline (60).

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