Solid-liquid mixing equipment and solid-liquid mixing system

Abstract

The utility model 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 device solves the problem of poor slurry mixing effect of powder-liquid mixing equipment in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-liquid mixing, in particular to solid-liquid mixing equipment and a solid-liquid mixing system. Background Art

[0002] In the processing of industrial raw materials, the powder-liquid mixing process is essential, and how to obtain uniformly mixed raw materials is the top priority in this process. Since most of the powders in emerging industries such as lithium batteries are ultrafine or nano-scale powders, there will be a lot of air mixed on the surface and between the materials. When mixed with liquid, the powders enclosed by the gas will clump and form blocks, and cannot be mixed well with the liquid. If stirring and mixing are performed at this time, these agglomerated lumps cannot be well dispersed, and finally the finished slurry is unevenly mixed and the quality is unqualified.

[0003] At present, the industry usually uses a method of evenly dividing the solvent into multiple portions and feeding it into the mixing chamber through a set trajectory of the liquid inlet, and then quantitatively feeding the powder into the mixing chamber through the feeding screw. The air on the surface and in the gap of the powder is first discharged through the negative pressure and rotation in the slightly negative pressure mixing chamber. The two materials are in contact and fully infiltrated in the mixing chamber. Then, a high-speed motor is used to drive the rotor to generate a high tangential speed, forming a huge speed ladder in the narrow gap between the stator and the rotor, and the inter-cavity kinetic energy brought by the high-frequency mechanical effect causes the material to receive strong shear, extrusion, friction and other effects in the gap between the stator and the rotor, thereby obtaining a uniform and fine dispersion and mixing solution. However, the existing solutions still have the problem of poor mixing effect. These insufficiently kneaded slurries directly enter the next link, which will cause the finished slurry to have poor uniformity or increase the time to reach the standard viscosity, and the dispersion efficiency is not high enough. Utility Model Content

[0004] The main purpose of the utility model is to provide a solid-liquid mixing device and a solid-liquid mixing system to solve the problem of poor slurry mixing effect of the powder-liquid mixing device in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a solid-liquid mixing device is provided, including: a casing, the casing having a mixing chamber for mixing; an impeller, the impeller is rotatably arranged in the mixing chamber, one of the impeller and the casing has a plurality of circumferentially arranged flow channels, blades are arranged between the flow channels, the blades have shear grooves, and each shear groove is arranged circumferentially, the other of the impeller and the casing has shear teeth, and when the impeller rotates, the shear teeth pass through each flow channel and each shear groove, and the impeller also has a guide hole that is arranged through and connected to the flow channel.

[0006] Further, the axial direction of the impeller has a first side and a second side. Flow channels and shear teeth are provided on both the first side and the second side. The flow channels on the first side and the second side are respectively for different materials to be mixed to pass through.

[0007] Further, the diversion holes penetrate through the first side and the second side and are both communicated with the flow channels on the first side and the second side.

[0008] Further, the first side includes an arc surface section and a straight surface section. The arc surface section is located inside the straight surface section, and along the direction close to the central axis of the impeller, the arc surface section extends in the direction away from the second side. The blade includes a first section located on the arc surface section and a second section located on the straight surface section. The shear groove is located on the second section.

[0009] Further, the shear grooves on the first side and the second side are arranged axially aligned along the impeller.

[0010] Further, the diversion holes are located on the straight surface section.

[0011] Further, the surface of the impeller has flow channels and blades. The blades extend along the surface of the impeller, and the blades form an angle with the axis of the impeller. The inner wall of the mixing chamber has shear teeth. There are multiple shear teeth, and shear teeth are provided on the inner walls at both opposite ends of the mixing chamber.

[0012] Further, multiple shear teeth are respectively provided on the inner walls at both opposite ends of the mixing chamber, and the shear teeth on the inner wall are spaced circumferentially along the impeller.

[0013] Further, at least part of the blades are in a spiral structure along the circumference of the impeller.

[0014] Further, the casing includes a housing part, an upper stator and a middle stator. The housing part has a receiving cavity. The upper stator and the middle stator are located in the receiving cavity. The middle stator divides the receiving cavity into a mixing chamber and a dispersion chamber arranged axially. The upper stator and the middle stator form the mixing chamber. The inner circle of the middle stator has a middle flow channel communicating the mixing chamber and the dispersion chamber. The surfaces of the upper stator and the middle stator facing the mixing chamber have shear grooves or shear teeth.

[0015] Further, the casing further includes a lower stator disposed within the housing portion. The lower stator is located on the side of the middle stator away from the upper stator, and a dispersion chamber is formed between the lower stator and the middle stator. The inner ring of the lower stator has a downstream channel communicating with the dispersion chamber. The solid-liquid mixing device further includes a rotor rotatably disposed within the dispersion chamber, and an overflow channel is formed between the circumferential edge of the rotor and the circumferential side wall of the dispersion chamber. The rotor has a first surface facing the middle stator and a second surface facing the lower stator. One of the surface of the middle stator facing the rotor and the first surface has a first annular protrusion with a first shear channel radially penetrating therethrough, and the other of the surface of the middle stator facing the rotor and the first surface has a first shear protrusion. One of the surface of the lower stator facing the rotor and the second surface has a second annular protrusion with a second shear channel radially penetrating therethrough, and the other of the surface 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 blocking and avoiding the first shear channel, and the second shear protrusion can switch between positions blocking and avoiding the second shear channel.

[0016] Further, there are a plurality of first annular protrusions sleeved in sequence along the radial direction of the rotor. There are a plurality of first shear protrusions, and at least some of the first shear protrusions are arranged at intervals along the circumferential direction of the rotor to form a first shear protrusion ring. A first shear protrusion ring is provided between two radially adjacent first annular protrusions; and / or there are a plurality of second annular protrusions sleeved in sequence along the radial direction of the rotor. There are a plurality of second shear protrusions, and at least some of the second shear protrusions are arranged at intervals along the circumferential direction of the rotor to form a second shear protrusion ring. A second shear protrusion ring is provided between two radially adjacent second annular protrusions.

[0017] Further, an angle is formed between the first shear channel and / or the first shear channel and the radial direction of the rotor.

[0018] Further, the housing portion has a solid feed port, a liquid feed port, and a discharge port. The solid feed port is located on the side of the mixing chamber away from the dispersion chamber and at the center of the impeller. The liquid feed port is located on the side of the dispersion chamber away from the mixing chamber, and the discharge port is located on the circumferential side surface of the mixing chamber.

[0019] According to another aspect of the present invention, there is provided a solid-liquid mixing system, including the above-mentioned solid-liquid mixing device; a circulation tank, the circulation tank is communicated with the solid-liquid mixing device through a circulation pipeline. The slurry after being mixed by the solid-liquid mixing device enters the circulation tank through the circulation pipeline and re-enters the solid-liquid mixing device through the circulation pipeline.

[0020] Further, there are a plurality of circulation tanks, each circulation tank is communicated with the solid-liquid mixing device through a circulation pipeline, and the circulation tanks are arranged in parallel.

[0021] Further, the solid-liquid mixing system further includes a kneading device, which is connected to the circulation tank and can convey the preliminarily kneaded slurry into the circulation tank.

[0022] Further, there are multiple solid-liquid mixing devices, circulation pipelines and circulation tanks. The solid-liquid mixing system further includes multiple circulation processing systems. Each circulation processing system includes a solid-liquid mixing device, a circulation pipeline and a circulation tank. The solid-liquid mixing system further includes a connecting pipeline, which is connected to multiple circulation processing systems at the same time, so that the circulation processing systems are connected through the connecting pipeline.

[0023] Applying the technical solution of the present utility model, by arranging a shear groove and shear teeth between the casing and the impeller, when the impeller rotates for mixing, a greater kneading effect can be exerted, increasing the mixing intensity and kneading process, thereby improving the mixing effect of the mixed slurry. Specifically, when the powder and liquid enter the mixing chamber, the powder and liquid are respectively on both sides of the impeller and come into contact, soak and mix at the diversion holes to form a preliminary slurry. In this way, forced contact, soaking and mixing are carried out at the designated position, that is, the diversion holes, and the efficiency is much higher than the free contact and mixing outside the impeller. At the same time, due to the rotation of the impeller, the preliminarily soaked and mixed slurry is driven by the blades and thrown outward under the action of centrifugal force. At this time, the slurry will contact the shear groove and shear teeth. Since the shear groove and shear teeth with high-speed relative movement will form an obvious turbulent flow on the slurry, the residence time of the slurry in the mixing chamber is increased, and then the kneading and mixing effect is increased. The above method avoids the situation that the ordinary impeller can only use the blades to transport the liquid and powder to the vicinity of the outer ring of the upper stator by centrifugal force for a short-term powder-liquid contact, resulting in almost no kneading effect and low efficiency. When mixing the powder and liquid, the contact and soaking time is increased, the mixing intensity and kneading process are increased, the quality of the final slurry product is improved, and it also has a positive significance for the improvement of efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The schematic diagrams in the specification forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0025] Figure 1 shows the structural schematic diagram of the solid-liquid mixing device of the present utility model;

[0026] Figure 2 shows Figure 1 the structural schematic diagram of the impeller in

[0027] Figure 3 shows Figure 2 the bottom view of the impeller in

[0028] Figure 4 showsFigure 1 Schematic structural diagram of the middle stator in

[0029] Figure 5 shows Figure 4 Schematic structural diagram of another perspective of the middle stator in

[0030] Figure 6 shows Figure 1 Schematic structural diagram of the upper stator in

[0031] Figure 7 shows Figure 1 Cross-sectional view of the cooperation between the lower stator and the rotor in

[0032] Figure 8 shows Figure 1 Schematic structural diagram of the rotor in

[0033] Figure 9 Schematic structural diagram of another rotor

[0034] Figure 10 Schematic structural diagram of another lower stator

[0035] Figure 11 Schematic structural diagram of the solid-liquid mixing system in Embodiment 1

[0036] Figure 12 Schematic structural diagram of the solid-liquid mixing system in Embodiment 2

[0037] Figure 13 Schematic structural diagram of the solid-liquid mixing system in Embodiment 3

[0038] Figure 14 Schematic structural diagram of the solid-liquid mixing system in Embodiment 4.

[0039] Among them, the above-mentioned drawings include the following reference numerals:

[0040] 10, housing; 11, mixing chamber; 12, shear teeth; 13, housing part; 131, solid feed port; 132, liquid feed port; 133, discharge port; 14, upper stator; 141, shear protrusion; 15, middle stator; 151, first shear protrusion; 16, dispersion chamber; 17, lower stator; 171, second shear protrusion; 20, impeller; 21, flow channel; 22, blade; 23, shear groove; 24, diversion hole; 25, arc section; 26, straight section; 30, rotor; 31, flow-through channel; 32, first annular protrusion; 321, first shear flow channel; 33, second annular protrusion; 331, second shear flow channel; 40, circulation tank; 50, circulation pipeline; 60, connecting pipeline; 70, kneading equipment. Detailed implementation manners

[0041] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0042] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0043] In the present utility model, unless otherwise stated, the orientation words such as "upper, lower, top, bottom" are generally in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravitational directions of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contours of the respective components themselves, but the above orientation words are not used to limit the present utility model.

[0044] In order to solve the problem of poor mixing effect of the slurry in the existing powder-liquid mixing equipment, the present utility model provides a solid-liquid mixing equipment and a solid-liquid mixing system.

[0045] Embodiment 1

[0046] As Figures 1 to 8 shown, a solid-liquid mixing equipment includes a casing 10 and an impeller 20. The casing 10 has a mixing chamber 11 for mixing materials; the impeller 20 is rotatably arranged in the mixing chamber 11. One of the impeller 20 and the casing 10 has a plurality of circumferentially arranged flow channels 21, and blades 22 are arranged between the flow channels 21. The blades 22 have shear grooves 23, and the shear grooves 23 are circumferentially arranged. The other of the impeller 20 and the casing 10 has shear teeth 12. When the impeller 20 rotates, the shear teeth 12 pass through the flow channels 21 and the shear grooves 23.

[0047] In this embodiment, by providing a shear groove 23 and a shear tooth 12 between the casing 10 and the impeller 20, when the impeller 20 rotates for mixing, a greater kneading effect can be exerted, increasing the mixing intensity and the kneading process, thereby improving the effect of the mixed slurry. Specifically, when the powder and the liquid enter the mixing chamber 11, the powder and the liquid are respectively on both sides of the impeller 20 and come into contact, infiltrate, and mix at the diversion hole 24 to form a preliminary slurry. In this way, forced contact, infiltration, and mixing are carried out at the designated position, i.e., the diversion hole 24, and the efficiency is much higher than the free contact and mixing outside the impeller 20. At the same time, due to the rotation of the impeller 20, the preliminarily infiltrated and mixed slurry is driven by the blade 22 and thrown outward under the action of centrifugal force. At this time, the slurry will contact the shear groove 23 and the shear tooth 12. Since the shear groove 23 and the shear tooth 12 with high-speed relative movement will form an obvious turbulent flow on the slurry, the residence time of the slurry in the mixing chamber 11 is increased, and further the kneading and mixing effect is increased. The above method avoids the situation where an ordinary impeller 20 can only use the blade to convey the liquid and the powder to the vicinity of the outer ring of the upper stator by centrifugal force for a short-term powder-liquid contact, resulting in almost no kneading effect and low efficiency. It improves the contact and infiltration time during powder-liquid mixing, increases the mixing intensity and the kneading process, improves the quality of the final slurry product, and also has a positive significance for improving the efficiency.

[0048] As Figure 2 and Figure 3 shown, in order to further ensure the sufficiency of mixing, in this embodiment, shear teeth 12 and shear grooves 23 are provided on both axial sides of the impeller 20. Specifically, the impeller 20 has a first side and a second side axially. Flow channels 21 and shear teeth 12 are provided on both the first side and the second side. The flow channels 21 on the first side and the flow channels 21 on the second side are respectively for different materials to be mixed to pass through. In this way, after the powder and the liquid are preliminarily mixed at the diversion hole 24, they can cooperate with the shear teeth 12 and the shear grooves 23 on either side under the action of the impeller 20, so as to ensure that no matter which side the slurry is thrown to under the action of the impeller 20, it can cooperate with the shear teeth 12 and the shear grooves 23, thereby ensuring the mixing effect of the slurry.

[0049] For the convenience of description, in this embodiment, the flow channel 21 on the above-mentioned first side is used as the flow channel 21 for the powder to enter, and the flow channel 21 on the second side is used as the flow channel 21 for the liquid to enter. Considering the gravity of the liquid, the lower part of the impeller 20 is taken as the second side and the upper part is taken as the first side. In this way, during use, the powder is added into the first flow channel 21 through the solid feed port 131 above the impeller 20, and the liquid is injected into the second flow channel 21 through the liquid feed port 132 below. Of course, the above setting method can also be adjusted according to needs as long as the injection and mixing between the powder and the liquid can be realized.

[0050] Meanwhile, in this embodiment, the form of arranging a flow channel 21, blades 22 and shear grooves 23 on the impeller 20 and arranging shear teeth 12 in the casing 10 is adopted. That is, in this embodiment, blades 22 are arranged on both the upper and lower sides of the impeller 20. A flow channel 21 is formed between the blades 22, and shear grooves 23 are formed on the blades 22. The top surface and the left and right side surfaces of the shear groove 23 of the upper blade 22 are all open, and the bottom surface and the left and right side surfaces of the lower blade 22 are all open. In this way, when the impeller 20 rotates, the shear teeth 12 can rotate relative to the shear grooves 23, and the shear teeth 12 can pass through each shear groove 23 and shuttle between each flow channel 21.

[0051] Since flow channels 21 are arranged on both sides in this embodiment, the diversion holes 24 substantially penetrate through both the first side and the second side and are communicated with the flow channel 21 on the first side and the flow channel 21 on the second side. In this way, the powder on the first side and the liquid on the second side can be conveyed to the diversion holes 24 through their respective flow channels 21, so as to perform preliminary mixing at the diversion holes 24.

[0052] Of course, in addition to the way of arranging shear teeth 12 and shear grooves 23 on both sides of the impeller 20, shear grooves 23 and shear teeth 12 can also be arranged only on one side of the impeller 20, that is, shear grooves 23 and shear teeth 12 are arranged only on the above-mentioned first side or second side. At the same time, the arrangement positions of the shear grooves 23 and the shear teeth 12 can also be interchanged, that is, the flow channel 21, the blades 22 and the shear grooves 23 can be arranged on the inner wall of the casing 10, and the shear teeth 12 can be arranged on the impeller 20. In this way, there is still a flow channel 21 for material conveying, and there are still shear grooves 23 and shear teeth 12 cooperating with each other, so as to achieve the purpose of improving the mixing effect.

[0053] In this embodiment, considering the differences in the transportation of powder and liquid, the first side of this embodiment is not configured in a planar form. Specifically, the first side of this embodiment includes an arc surface section 25 and a straight surface section 26. The arc surface section 25 is located inside the straight surface section 26, and along the direction close to the central axis of the impeller 20, the arc surface section 25 extends away from the second side, that is, the height of the arc surface section 25 is higher at the center of the impeller 20 and lower at the edge. The straight surface section 26 is connected to the circumferential edge of the arc surface section 25, so that the first side forms a certain curvature. Correspondingly, the blade 22 includes a first section located on the arc surface section 25 and a second section located on the straight surface section 26, so that the shape of the blade 22 matches the shape of the first side, and thus the shape of the flow channel 21 between the blades 22 is not planar but a combined structure of an arc and a plane. The shear groove 23 is located in the second section. In this way, on the one hand, the above structural form of the first side facilitates the transportation of powder. At the same time, since the shear groove 23 and the shear teeth 12 are located at the position of the impeller 20 close to the outer circumference, it is ensured that the slurry under the centrifugal force of the impeller 20 can strike the shear groove 23 and the shear teeth 12 with a greater force, thereby improving the mixing effect. At the same time, during the rotation process, a stepped speed difference will be formed at different positions of the blade 22, thus forming multiple vortices and turbulences, and further increasing the kneading effect and dispersion efficiency.

[0054] Different from the form of the above first side, the surface of the second side of this embodiment is configured in an overall planar form, 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 above first side and second side can also be adjusted as needed. For example, both the first side and the second side can be set as planes, or the second side can be set in a structure form that is vertically symmetric with the first side, etc.

[0056] Preferably, the shear grooves 23 on the first side and the shear grooves 23 on the second side of this embodiment are arranged axially aligned along the impeller 20. Correspondingly, the shear teeth 12 on the relatively inner walls of the casing 10 are also arranged axially aligned, so as to ensure that the upper and lower positions of the shear grooves 23 and the shear teeth 12 are aligned, thereby ensuring a stable and unified turbulence effect on the slurry.

[0057] Since the shear groove 23 is located in the straight surface section 26, the diversion hole 24 is also arranged in the straight surface section 26 in this embodiment, so that the position of the shear groove 23 corresponds to the position of the diversion hole 24. In this embodiment, it is preferred that the shear groove 23 and the diversion hole 24 are arranged axially aligned along the circumference of the impeller 20, that is, the diversion hole 24 is located between two circumferentially adjacent shear grooves 23, so as to ensure that the preliminarily mixed slurry can be affected by the shear groove 23 and the shear teeth 12 and be fully mixed, ensuring the mixing effect. At the same time, the thickness of the straight surface section 26 on the impeller 20 is thinner than that of the arc surface section 25, so it is also convenient for the processing of the diversion hole 24.

[0058] In this embodiment, due to the arrangement form of the first side of the impeller 20, when the blades 22 on the first side extend along the surface of the impeller 20, an angle is also formed between the blades 22 and the axis of the impeller 20, and the angle is not 90 degrees, so that the shape of the blades 22 matches the arrangement form 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 form of the blades 22 can also be adjusted accordingly as long as it matches the arrangement form of the first side. Similarly, the setting mode of the blades 22 on the second side also matches the form of the second side.

[0059] Optionally, the number of the shear teeth 12 can be set as required, and one or more shear teeth 12 can be arranged on one side of the impeller 20. Considering the mixing effect, in this embodiment, it is preferred that the shear teeth 12 are arranged in multiple numbers, and the shear teeth 12 are arranged on the inner walls at the opposite ends of the mixing cavity 11, that is, on the upper and lower sides of the impeller 20. Moreover, on the inner walls at the opposite ends of the mixing cavity 11, that is, at the positions where the upper and lower sides of the impeller 20 are located, multiple shear teeth 12 are respectively arranged. The shear teeth 12 on the same side are arranged at intervals along the circumferential direction of the impeller 20, so as to form an annular arrangement form, which can cooperate with the form of the shear groove 23 to ensure the mixing effect.

[0060] At least part of the blades 22 in this embodiment are in a spiral structure along the circumferential direction 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 of this embodiment is set in a spiral structure form, and the spiral direction of the spiral 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 set as a straight line or other forms. The blades 22 on the second side can be set to extend radially or spirally. In this embodiment, it is preferred that both the blades 22 on the first side and the blades 22 on the second side are in a spiral shape and their twisting angles are different, so as to suck and convey the slurry coming from the lower part and bring the powder falling from the upper part to the circumferential side edge.

[0061] Such as Figure 1As shown, in this embodiment, the casing 10 includes a housing portion 13, an upper stator 14, and a middle stator 15. The housing portion 13 has a receiving cavity with a relatively large size. Both the upper stator 14 and the middle stator 15 are fixedly arranged in the receiving cavity. The middle stator 15 divides the receiving cavity into an axially arranged mixing cavity 11 and a dispersion cavity 16. The upper stator 14 and the middle stator 15 form the mixing cavity 11. In this embodiment, the mixing cavity 11 is arranged above and the dispersion cavity 16 is arranged below. Of course, more cavities can be added according to needs. Since the middle stator 15 is the main component for separating the mixing cavity 11 and the dispersion cavity 16, on the one hand, the middle stator 15 of this embodiment cooperates with the upper stator 14 above, and on the other hand, it also cooperates with the rotor 30 below. Based on this, the inner ring of the middle stator 15 of this embodiment has a middle flow channel connecting the mixing cavity 11 and the dispersion cavity 16, so that the liquid in the lower dispersion cavity 16 can enter the inlet at the center of the flow channel 21 on the second side of the impeller 20 through the middle flow channel, and then flow radially towards the edge of the impeller 20, and is initially mixed with the powder at the diversion hole 24, and is fully mixed under the action of the shear teeth 12 and the shear grooves 23, and then is discharged from the discharge port 133 on the circumferential side of the mixing cavity 11. As Figures 4 to 6 shown, since the upper stator 14 and the middle stator 15 form the mixing cavity 11, the surfaces of the upper stator 14 and the middle stator 15 facing the mixing cavity 11 have shear teeth 12, which thus cooperate with the shear grooves 23 on both sides of the impeller 20.

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

[0063] As Figure 1As shown, in this embodiment, the casing 10 further includes a lower stator 17. The lower stator 17 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 chamber 16 is formed between the lower stator 17 and the middle stator 15. The main function of the dispersion chamber 16 is to shear and disperse the slurry before introducing the liquid into the mixing chamber 11 for mixing, thereby facilitating the mixing effect when mixing with the powder subsequently. In this embodiment, a downstream channel communicating with the dispersion chamber 16 is provided in the inner ring of the lower stator 17, and the downstream channel can communicate with the liquid inlet 132 at the bottom of the housing portion 13, so as to realize the introduction of the liquid. The solid-liquid mixing device further includes a rotor 30. The rotor 30 is rotatably disposed within the dispersion chamber 16, and a flow-through channel 31 is formed between the circumferential edge of the rotor 30 and the circumferential side wall of the dispersion chamber 16. The rotor 30 is divided into upper and lower layers, and the upper and lower layers are communicated through the flow-through channel 31. The lower layer is communicated with the downstream channel, and the upper layer is communicated with the middle channel. In this way, the liquid entering the lower layer of the rotor 30 from the downstream channel flows radially outward from the center of the rotor 30, and with continuous introduction, the liquid flows upward through the flow-through channel 31 to the upper layer until it flows into the center of the rotor 30, and then enters the center of the second side of the impeller 20 through the middle channel, flows radially to the outer peripheral side of the impeller 20, and finally mixes with the powder at the diversion holes 24 to form a further slurry, and then is discharged from the discharge port 133 on the side of the mixing chamber 11, completing a mixing process.

[0064] The dispersion chamber 16 of this embodiment is not a simple cavity. For the convenience of description, the rotor 30 of this embodiment has a first surface facing the middle stator 15 and a second surface facing the lower stator 17. In the setting mode of this embodiment, the upper surface of the rotor 30 is the first surface and the lower surface is the second surface. As Figures 4 to 8 shown, one of the surface 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 first shear flow channel 321 penetrating radially. The other of the surface of the middle stator 15 facing the rotor 30 and the first surface has a first shear protrusion 151. One of the surface of the lower stator 17 facing the rotor 30 and the second surface has a second annular protrusion 33, and the second annular protrusion 33 has a second shear flow channel 331 penetrating radially. The other of the surface of the lower stator 17 facing the rotor 30 and the second surface has a second shear protrusion 171. When the rotor 30 rotates, the first shear protrusion 151 can switch between positions blocking and avoiding the first shear flow channel 321, and the second shear protrusion 171 can switch between positions blocking and avoiding the second shear flow channel 331.

[0065] Specifically, as Figure 4 and Figure 5 shown, in this embodiment, a first shear protrusion 151 is provided on the lower surface of the middle stator 15; as Figure 8As shown, a first annular protrusion 32 and a second annular protrusion 33 are respectively provided on the upper surface and the lower surface of the rotor 30; as Figure 7 shown, a second shear protrusion 171 is provided on the upper surface of the lower stator 17. Among them, the first annular protrusion 32 and the second annular protrusion 33 respectively have a first shear flow channel 321 and a second shear flow channel 331 that radially penetrate through the inner and outer sides, and the first shear protrusion 151 is radially and internally and externally fitted with the first annular protrusion 32, and the second shear protrusion 171 is radially and internally and externally fitted with the second annular protrusion 33. In this way, when the rotor 30 rotates, the first shear protrusion 151 can switch between the positions of blocking and avoiding the first shear flow channel 321, and the second shear protrusion 171 can switch between the positions of blocking and avoiding the second shear flow channel 331, so as to utilize the cooperation between the first shear protrusion 151 and the first shear flow channel 321, and the second shear protrusion 171 and the second shear flow channel 331 to achieve the shear dispersion of the mortar. As Figure 1 indicated by the arrow in, when the mortar flows from the lower layer to the upper layer of the rotor 30, the rotor 30 needs to pass through each second shear flow channel 331 in the lower layer, so as to achieve the shear of the lower layer flow through the cooperation between the second shear protrusion 171 and the second shear flow channel 331, and when flowing to the upper layer, it needs to pass through the first shear flow channel 321, so as to achieve the shear of the upper layer flow through the cooperation between the first shear protrusion 151 and the first shear flow channel 321. This is beneficial to increasing the number of shear dispersions and improving the shear effect. Of course, the arrangement positions of the structures inside the two sets of cooperation structures between the first shear protrusion 151 and the first shear flow channel 321, and between the second shear protrusion 171 and the second shear flow channel 331 can be interchanged. For example, a first annular protrusion 32 is provided on the lower surface of the middle stator 15, and a first shear protrusion 151 is provided on the upper surface of the rotor 30, etc.

[0066] In this embodiment, there are multiple first annular protrusions 32, which are sleeved in sequence along the radial direction of the rotor 30. There are multiple first shear protrusions 151, and at least part of the first shear protrusions 151 are arranged at intervals along the circumferential direction of the rotor 30 to form a first shear protrusion ring. A first shear protrusion ring is arranged between two radially adjacent first annular protrusions 32; similarly, there are multiple second annular protrusions 33, which are sleeved in sequence along the radial direction of the rotor 30. There are multiple second shear protrusions 171, and at least part of the second shear protrusions 171 are arranged at intervals along the circumferential direction 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. Taking the first annular protrusion 32 and the first shear protrusion 151 as an example, there can be multiple first annular protrusions 32, and their diameters are different. They are sleeved in sequence along the radial direction of the rotor 30 according to the diameter size. A plurality of first shear channels 321 are evenly distributed at equal intervals in the circumferential direction on each first annular protrusion 32. Correspondingly, there are also multiple first shear protrusions 151. Part of the first shear protrusions 151 are arranged at equal intervals in the circumferential direction to form a first shear protrusion ring. There are multiple first shear protrusion rings, and they are also sleeved in sequence along the radial direction of the rotor 30 in the same setting form as the first annular protrusion 32. The first shear protrusion ring is inserted into the gap between two adjacent first annular protrusions 32 in the radial direction. In this way, according to the number of the first shear protrusion rings and the first annular protrusions 32 set, the mortar can be sheared several times, so as to increase the number of shearing times and further improve the shearing effect. The specific number of layers of the first shear protrusion ring and the first annular protrusion 32 can be set as needed and matched with the number of times of shearing required. In addition to arranging the first shear protrusion ring between two adjacent first annular protrusions 32, an additional first shear protrusion ring can also be arranged outside or inside the outermost or innermost first annular protrusion 32, so that the first shear protrusion rings are arranged in one-to-one correspondence with the first annular protrusions 32 to form a radially alternating arrangement form. The setting form of the second shear protrusion 171 and the second shear protrusion ring is similar to the above and will not be elaborated.

[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, part of the circumferential sides of the first shear protrusions 151 of the first shear protrusion ring are connected to each other, so that the first shear protrusion ring also forms a structural form similar to that of the first annular protrusion 32 with shear channels opened on the annular protrusion. The second shear protrusion ring can also adopt the above form. 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 in this embodiment are basically the same. Of course, there may also be no connection relationship between the circumferential sides of the first shear protrusions 151 of the first shear protrusion ring, and gaps are 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 gap between the first shear protrusions 151 at the same time.

[0068] Optionally, the penetration directions of the first shearing channel 321 and the second shearing channel 331 can be completely along the radial direction of the rotor 30, or can be approximately along the radial direction of the rotor 30, that is, there can be a certain angle of deflection between the penetration directions of the first shearing channel 321 and the second shearing channel 331 and the radial direction of the rotor 30, such as Figure 9 and Figure 10 shown, so as to improve the shearing effect. And at this time, the directions of the relative deflection angles of the first shearing channel 321 and the second shearing channel 331 with respect to the radial direction can be the same or opposite.

[0069] As Figure 1 shown, the housing part 13 of this embodiment has three externally connected openings, namely a solid feed port 131, a liquid feed port 132 and a discharge port 133. Among them, the solid feed port 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 port 131 is arranged at the center position above the impeller 20, so that powder can be added to the center of the flow channel 21 on the first side of the impeller 20. At the same time, a stirring structure can be arranged at the solid feed port 131 to realize the agitation of the powder, which helps the feeding. The liquid feed port 132 is located on the side of the dispersion chamber 16 away from the mixing chamber 11. The liquid feed port 132 is arranged at the bottom side of the housing part 13 and is communicated with the downstream channel through a channel, so that liquid can be introduced into the dispersion chamber 16 and the mixing chamber 11. The discharge port 133 is located on the circumferential side of the mixing chamber 11, so that the mixed slurry is directly discharged from the discharge port 133.

[0070] As Figure 11 shown, this embodiment also provides a solid-liquid mixing system, which includes the above-mentioned solid-liquid mixing equipment and a circulation tank 40. The circulation tank 40 is communicated with the solid-liquid mixing equipment through a circulation pipeline 50. The slurry mixed by the solid-liquid mixing equipment enters the circulation tank 40 through the circulation pipeline 50 and then enters the solid-liquid mixing equipment again through the circulation pipeline 50. The solid-liquid mixing equipment of this embodiment mainly plays the role of powder-liquid kneading and subsequent fine dispersion, and the circulation tank 40 plays a circulation role. The circulation pipeline 50 essentially includes two parts, namely a first pipeline between the discharge port 133 of the solid-liquid mixing equipment and the inlet of the circulation tank 40, and a second pipeline between the liquid feed port 132 of the solid-liquid mixing equipment and the outlet of the circulation tank 40, so as to realize the circulation of the slurry between the solid-liquid mixing equipment and the circulation tank 40.

[0071] During use, add the solvent liquid to the circulation tank 40, and then start circulating in the order of circulation tank 40 - solid-liquid mixing equipment - circulation tank 40. During the circulation, powder can be added to the solid feed port 131 through the feed bin, so that the powder and the solvent liquid are kneaded into a slurry in the solid-liquid mixing equipment, and then circulated to the circulation tank 40 and then back to the solid-liquid mixing equipment. While being dispersed, powder is added to the solid-liquid mixing equipment again, continuously increasing the solid content in the slurry. Finally, after reaching the target expected solid content, the powder feeding action stops. A single cycle for the purpose of dispersion and uniformity is completed, and finally a qualified slurry is obtained. In this way, on the one hand, the slurry can be kneaded better per unit time, reducing the time and power consumption required for subsequent dispersion steps. On the other hand, the initial kneading effect directly affects the agglomeration and sieve passing rate of the finished slurry.

[0072] Example Two

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

[0074] As Figure 12 shown, in this embodiment, there are multiple circulation tanks 40, and each circulation tank 40 is connected to the solid-liquid mixing equipment through a circulation pipeline 50, and the circulation tanks 40 are arranged in parallel. The circulation pipeline 50 can be provided with multiple ones as needed. Different solid-liquid mixing equipment are respectively connected to the same solid-liquid mixing equipment through the corresponding circulation pipelines 50, or the circulation pipeline 50 can be set into a multi-branch structural form such as a tee or a cross, so that multiple circulation tanks 40 can be respectively connected to different interfaces of the circulation pipeline 50, thereby realizing the connection with the solid-liquid mixing equipment. Valves and other components can be provided on the circulation pipeline 50 as needed to control the equipment to which the slurry is transported. The solid-liquid mixing equipment in this embodiment mainly plays the role of kneading the powder and liquid and performing subsequent fine dispersion.

[0075] Taking the example of having two circulation tanks 40, for the sake of convenience, they are referred to as the first circulation tank 40 and the second circulation tank 40. During use, the initial process is basically the same as that of the first embodiment. The solvent liquid is added to the first circulation tank 40, and then the circulation process of the first circulation tank 40 - solid-liquid mixing equipment - first circulation tank 40 is started. During this period, powder is added to the solid feed port 131 through the feed bin, so that the powder and the solvent liquid are kneaded into a slurry in the solid-liquid mixing equipment, and then circulated back to the circulation tank 40 and then back to the solid-liquid mixing equipment. While being dispersed, powder is added to the solid-liquid mixing equipment again, continuously increasing the solid content in the slurry. Finally, after reaching the target expected solid content, the powder feeding action stops. Then the double-circulation process is started: the slurry flows from the first circulation tank 40 - solid-liquid mixing equipment - second circulation tank 40 - solid-liquid mixing equipment - first circulation tank 40. The purpose of doing this is to enable each part of the slurry in the first circulation tank 40 to pass through the solid-liquid mixing equipment for dispersion once and then go to the second circulation tank 40, and each part of the slurry in the second circulation tank 40 passes through the solid-liquid mixing equipment for treatment once and then goes to the first circulation tank 40. In this way, it can be ensured that each portion of the slurry has undergone the same number of shear times and shear force, ensuring the uniformity of the slurry.

[0076] Example Three

[0077] The difference from the first embodiment lies in the structural form of the solid-liquid mixing system.

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

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

[0080] Example Four

[0081] The difference from the first embodiment lies in the structural form of the solid-liquid mixing system.

[0082] As 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 further includes multiple circulation processing systems. Each circulation processing system includes a solid-liquid mixing device, a circulation pipeline 50, and a circulation tank 40. The solid-liquid mixing system further includes a connecting pipeline 60. The connecting pipeline 60 is simultaneously connected to multiple circulation processing systems to enable the circulation processing systems to communicate with each other through the connecting pipeline 60. The two ends of the connecting pipeline 60 in this embodiment are respectively connected and communicated with the first pipelines of the circulation pipelines 50 of two circulation processing systems, so that the slurry in one circulation processing system can be transported through its first pipeline and the connecting pipeline 60 to the first pipeline of another circulation processing system under the action of its solid-liquid mixing device, thereby realizing circulation in the other circulation processing system. Of course, the connecting pipeline 60 can also be connected to other devices and structures, as long as it can connect two circulation processing systems and realize the transportation of the slurry from one circulation processing system to another circulation processing system.

[0083] In this embodiment, taking the case where there are two circulation processing systems as an example, each circulation processing system respectively includes a solid-liquid mixing device, a circulation pipeline 50, and a circulation tank 40. The cooperation mode among the solid-liquid mixing device, the circulation pipeline 50, and the circulation tank 40 can refer to the setting mode in Embodiment 1. For subsequent explanation, the two circulation processing systems are respectively called the first circulation processing system and the second circulation processing system, and their solid-liquid mixing devices, circulation pipelines 50, and circulation tanks 40 are also named according to the first and the second respectively. The solid-liquid mixing device in this embodiment has the functions of both the initial kneading and preliminary dispersion of powder and liquid and the secondary fine dispersion of the slurry.

[0084] During use, the first circulation processing system and the second circulation processing system work once. 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 - the first solid-liquid mixing device - the first circulation tank 40 and are initially dispersed. Then, after the powder dropping is completed, the slurry is transferred to the second circulation tank 40 of the second circulation processing system through the drive of the first solid-liquid mixing device through the connecting pipeline 60, and then undergoes multiple single cycles through the second circulation tank 40 - the second solid-liquid mixing device - the second circulation tank 40, and the fine dispersion process is started.

[0085] During the operation of the second-cycle processing system, since the first-cycle processing system has completed the initial kneading and preliminary dispersion, the first-cycle processing system has become idle. Therefore, the first-cycle tank 40 and the first solid-liquid mixing device can be fed with materials and the single-cycle process can be started again while the second-cycle processing system is operating. When the steps of the first-cycle processing system complete the powder dropping and kneading again, the slurry of the second-cycle processing system has been finely dispersed and can be discharged downstream. At this time, the second-cycle processing system can receive the slurry transported by the first-cycle processing system again and perform the fine-dispersion process again. In this way, the first-cycle processing system and the second-cycle processing system can operate simultaneously without interruption, which can greatly shorten the overall processing time and improve the efficiency by 80-95%.

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

[0087] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0088] 1. Solved the problem of poor mixing effect of the mixed slurry of the powder-liquid mixing equipment in the prior art;

[0089] 2. Increased the contact wetting time during powder-liquid mixing, increased the mixing intensity and kneading process, improved the quality of the final slurry product, and also had a positive significance for improving the efficiency;

[0090] 3. Without increasing the number of cycles, the mixing of the slurry was further refined, resources and costs were saved, higher-quality slurry could be produced within a certain time, and the quality of the finished slurry was greatly improved.

[0091] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

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

[0093] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0094] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A solid-liquid mixing device, characterized in that, Comprising: A casing (10) having a mixing chamber (11) for mixing materials; An impeller (20) rotatably disposed within the mixing chamber (11). One of the impeller (20) and the casing (10) has a plurality of circumferentially arranged flow channels (21) with blades (22) disposed therebetween. The blades (22) have shear grooves (23) which are circumferentially arranged. The other of the impeller (20) and the casing (10) has shear teeth (12). When the impeller (20) rotates, the shear teeth (12) pass through the flow channels (21) and the shear grooves (23). The impeller (20) also has a diversion hole (24) which is disposed therethrough and communicates with the flow channels (21).

2. The solid-liquid mixing device according to claim 1, characterized in that, Axially, the impeller (20) has a first side and a second side, both of which are provided with the flow channels (21) and the shear teeth (12). The flow channels (21) on the first side and the flow channels (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, wherein, The diversion hole (24) passes through the first side and the second side and communicates with both the flow channels (21) on the first side and the flow channels (21) on the second side.

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

5. The solid-liquid mixing device according to claim 4, wherein, The shear grooves (23) on the first side and the shear grooves (23) on the second side are arranged axially aligned along the impeller (20).

6. The solid-liquid mixing device according to claim 4, wherein, The diversion hole (24) is located on the straight segment (26).

7. The solid-liquid mixing device according to claim 1, characterized in that, The surface of the impeller (20) has the flow channels (21) and the blades (22). The blades (22) extend along the surface of the impeller (20) and form an angle with the axis of the impeller (20). The inner wall of the mixing chamber (11) has the shear teeth (12). There are a plurality of the shear teeth (12), and the shear teeth (12) are disposed on the inner walls at opposite ends of the mixing chamber (11).

8. The solid-liquid mixing device according to claim 7, wherein, A plurality of the shear teeth (12) are respectively disposed on the inner walls at opposite ends of the mixing chamber (11), and the shear teeth (12) on the inner wall are spaced apart circumferentially along the impeller (20).

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

10. The solid-liquid mixing device according to claim 1, characterized in that, The casing (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 the axially arranged mixing cavity (11) and the dispersion 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 middle flow channel connecting the mixing cavity (11) and the dispersion cavity (16). The surfaces of the upper stator (14) and the middle stator (15) facing the mixing cavity (11) have the shear grooves (23) or the shear teeth (12).

11. The solid-liquid mixing device according to claim 10, wherein the casing (10) further includes a lower stator (17). The lower stator (17) is disposed in the housing portion (13). The lower stator (17) is located on the side of the middle stator (15) away from the upper stator (14). A 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 connecting the dispersion cavity (16). The solid-liquid mixing device further includes a rotor (30). The rotor (30) is rotatably disposed in the dispersion cavity (16). An overflow channel (31) is formed between the circumferential edge of the rotor (30) and the circumferential side wall of the dispersion cavity (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 surface of the middle stator (15) facing the rotor (30) and the first surface has a first annular protrusion (32). The first annular protrusion (32) has a first shear flow channel (321) radially penetrating therethrough. The other of the surface of the middle stator (15) facing the rotor (30) and the first surface has a first shear protrusion (151). One of the surface of the lower stator (17) facing the rotor (30) and the second surface has a second annular protrusion (33). The second annular protrusion (33) has a second shear flow channel (331) radially penetrating therethrough. The other of the surface of the lower stator (17) facing the rotor (30) and the second surface has a second shear protrusion (171). When the rotor (30) rotates, the first shear protrusion (151) can switch between positions blocking and avoiding the first shear flow channel (321), and the second shear protrusion (171) can switch between positions blocking and avoiding the second shear flow channel (331).

12. The solid-liquid mixing device according to claim 11, wherein The first annular protrusions (32) are multiple and are sleeved in sequence along the radial direction of the rotor (30). The first shear protrusions (151) are multiple, and at least part of the first shear protrusions (151) are arranged at intervals along the circumferential direction of the rotor (30) to form a first shear protrusion ring. The first shear protrusion ring is arranged between two radially adjacent first annular protrusions (32); and / or The second annular protrusions (33) are multiple and are sleeved in sequence along the radial direction of the rotor (30). The second shear protrusions (171) are multiple, and at least part of the second shear protrusions (171) are arranged at intervals along the circumferential direction of the rotor (30) to form a second shear protrusion ring. The 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, An included angle is formed between the first shear channel (321) and / or the first shear channel (321) and the radial direction of the rotor (30).

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

15. A solid-liquid mixing system, characterized in that, Comprising: The solid-liquid mixing device according to any one of claims 1 to 14; A circulation tank (40), the circulation tank (40) is communicated with the solid-liquid mixing device through a circulation pipeline (50). The slurry after being mixed by the solid-liquid mixing device enters the circulation tank (40) through the circulation pipeline (50) and enters the solid-liquid mixing device again 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 circulation tank (40) is communicated with 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 further includes a kneading device (70), the kneading device (70) is communicated with the circulation tank (40), and can convey the preliminarily kneaded slurry into the circulation tank (40).

18. The solid-liquid mixing system according to claim 15, characterized in that There are multiple solid-liquid mixing devices, the circulation pipelines (50), and the circulation tanks (40). The solid-liquid mixing system further 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 further includes a connecting pipeline (60), and the connecting pipeline (60) is simultaneously communicated with multiple circulation processing systems so that the circulation processing systems are communicated with each other through the connecting pipeline (60).

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