WO2024119959A1 - Liquid dispersion structure assembly and powder-liquid mixing device - Google Patents

Abstract

Disclosed in the present invention are a liquid dispersion structure assembly and a powder-liquid mixing device. A partition plate is arranged inside a housing of a dispersion stator of the liquid dispersion structure assembly; by means of the partition plate, an inner cavity of the housing is divided into a lower-layer dispersion area and an upper-layer dispersion area; the dispersion stator is provided with a lower-layer matching structure and an upper-layer matching structure in the lower-layer dispersion area and the upper-layer dispersion area respectively; a lower-layer rotor is arranged in the lower-layer dispersion area, and rotationally matches the lower-layer matching structure of the dispersion stator; and an upper-layer rotor is arranged in the upper-layer dispersion area, and rotationally matches the upper-layer matching structure of the dispersion stator. In the present invention, the dispersion stator having a double-layer structure is configured for simultaneously matching the lower-layer rotor and the upper-layer rotor so as to achieve layered dispersion, such that the flow resistance is smaller, the flow is smoother, the flow loss is smaller, the overall structure is more compact, and thus the flow path of liquid in the dispersion area is shorter and smoother.

Description

Liquid dispersion structure assembly and powder-liquid mixing device Technical Field

The invention relates to the technical field of powder-liquid mixing equipment, in particular to a liquid dispersion structure assembly and a powder-liquid mixing device.

Background technique

Powder-liquid mixing equipment is a material mixing equipment that utilizes the high-speed rotation of the rotor to generate shear force between the rotor and the stator to achieve material dispersion and mixing to form a high-concentration and high-viscosity slurry.

Chinese invention patent 202121776836.2 discloses a powder-liquid mixer, including a main shell, a liquid dispersion device, a powder conveying device and a mixing device. The liquid dispersion device disperses the liquid to be mixed in the liquid dispersion area and allows the dispersed liquid to be mixed to enter the powder-liquid mixing area. The powder conveying device conveys the powder to be mixed into the powder-liquid mixing area. The liquid to be mixed and the powder to be mixed are mixed by the mixing device and then discharged. This powder-liquid mixer has the following problems: its liquid dispersion device adopts two layers of stacked shearing devices (coarse shearing device and fine shearing device) to disperse the liquid, and each layer of shearing device includes a single-layer dispersion rotor and a dispersion stator that rotate together. After the liquid is input from the liquid inlet, it needs to bypass the two dispersion rotors and two dispersion stators, that is, the liquid needs to go through an approximately "bow"-shaped flow channel of inside→outside→inside→outside→inside in the powder conveying device. On the one hand, such a flow channel structure is complex, the process is long, the dispersion efficiency is relatively low, and the dispersion effect is relatively poor; on the other hand, during the flow process of the liquid in the "bow"-shaped flow channel, it needs to undergo at least five turns, the flow resistance is large, the flow is not smooth enough, and the flow loss is large.

Summary of the invention

In view of the shortcomings of the above-mentioned existing powder-liquid mixers, the applicant provides a liquid dispersion structure assembly and a powder-liquid mixing device with a reasonable structure, which simplifies the structure, shortens the process, improves the dispersion efficiency and dispersion effect, reduces flow resistance, and reduces flow loss.

The technical solution adopted by the present invention is as follows:

A liquid dispersion structure assembly, wherein a partition is arranged in a shell of a dispersion stator, the partition divides the inner cavity of the shell into a lower dispersion area and an upper dispersion area, a central flow passage is arranged in the center of the partition, and the central flow passage connects the lower dispersion area with the upper dispersion area; a liquid inlet is arranged on the shell, and the liquid inlet connects the lower dispersion area; an upper liquid outlet channel is arranged on the top of the shell, and the upper liquid outlet channel connects the upper dispersion area; the dispersion stator is provided with a lower matching structure and an upper matching structure in the lower dispersion area and the upper dispersion area respectively; a lower rotor is arranged in the lower dispersion area, and the lower rotor is rotationally matched with the lower matching structure of the dispersion stator; an upper rotor is arranged in the upper dispersion area, and the upper rotor is rotationally matched with the upper matching structure of the dispersion stator; the lower rotor and the upper rotor are sleeved on the main shaft;

The lower layer matching structure of the dispersed stator includes a plurality of circles of lower layer stator rings, each circle of the lower layer stator ring is provided with a plurality of lower layer stator dispersion grooves; a plurality of circles of lower layer rotor rings are correspondingly arranged on the lower layer rotor, each circle of the lower layer rotor ring is provided with a plurality of lower layer rotor dispersion grooves; the lower layer stator ring and the lower layer rotor ring are opposite and spaced apart;

The upper matching structure of the dispersed stator includes a plurality of upper stator rings, each of which is provided with a plurality of upper stator dispersion grooves; a plurality of upper rotor rings are correspondingly arranged on the upper rotor, each of which is provided with a plurality of upper rotor dispersion grooves; the upper stator rings and the upper rotor rings are arranged opposite to each other and spaced apart.

As a further improvement of the above technical solution:

The liquid conveying direction in the lower dispersion zone is radially from outside to inside, and the conveying direction is opposite to the direction of the liquid centrifugal force; the liquid conveying direction in the upper dispersion zone is radially from inside to outside, and the conveying direction is the same as the direction of the liquid centrifugal force.

The lower rotor has a bottom plate, and the lower rotor ring is vertically arranged on the bottom plate; a plurality of lower spoiler blades are arranged on the lower side of the bottom plate; the upper rotor has a top plate, and the upper rotor ring is vertically arranged on the top plate; a plurality of upper spoiler blades are arranged on the upper side of the top plate.

The dispersion slot gap value of the lower dispersion zone is greater than the dispersion slot gap value of the upper dispersion zone.

The lower stator dispersion groove and the lower rotor dispersion groove are oblique grooves or radial grooves; or one of the lower stator dispersion groove and the lower rotor dispersion groove is an oblique groove, and the other is a radial groove.

The dispersion groove of the lower rotor is inclined backward from the outside to the inside in the direction of rotation of the lower rotor, and the dispersion groove of the lower stator is inclined in the opposite direction to the dispersion groove of the lower rotor.

The upper stator dispersion groove and the upper rotor dispersion groove are oblique grooves or radial grooves; or one of the upper stator dispersion groove and the upper rotor dispersion groove is an oblique groove, and the other is a radial groove.

The upper rotor dispersion groove is inclined forward from outside to inside toward the rotation direction of the upper rotor, and the upper stator dispersion groove is inclined in the opposite direction to the upper rotor dispersion groove.

The lower stator ring and the upper stator ring are respectively arranged vertically on the lower and upper sides of the partition; a plurality of stator teeth are arranged on the lower stator ring and/or the upper stator ring, and the gaps between adjacent stator teeth constitute stator dispersion grooves; or, the lower stator ring and/or the upper stator ring are continuous annular plates, and stator dispersion grooves are opened on the annular plates; and/or, a plurality of rotor teeth are arranged on the lower rotor ring and/or the upper rotor ring, and the gaps between adjacent rotor teeth constitute rotor dispersion grooves; or, the lower rotor ring and/or the upper rotor ring are continuous annular plates, and rotor dispersion grooves are opened on the annular plates.

A powder-liquid mixing device adopts the above-mentioned liquid dispersion structure assembly, a mixing sleeve is connected to the top of the shell, a mixing chamber is opened in the mixing sleeve, and a discharge port connected to the mixing chamber is provided on the mixing sleeve; a mixing rotor is arranged in the mixing chamber, and the mixing rotor is sleeved on the main shaft; a powder inlet tube is connected to the top of the mixing sleeve, a powder breaking head and a powder conveying rotor are arranged above and below in the powder inlet tube, and the powder breaking head and the powder conveying rotor are sleeved on the main shaft.

The beneficial effects of the present invention are as follows:

(1) The present invention adopts a double-layer structure of dispersion stator to cooperate with the lower rotor and the upper rotor to realize layered dispersion. The liquid only needs to go through the "C"-shaped flow channel from outside to inside to outside in the two-layer dispersion area of the liquid. Compared with the existing single-layer structure, it has fewer parts, the internal flow channel structure is simpler, the process is shortened, the dispersion efficiency is higher, and the dispersion effect is better. During the flow of the liquid in the "C"-shaped flow channel, it only needs to go through three turns, the flow resistance is smaller, the flow is smoother, the flow loss is smaller, and it is also more conducive to the heat dissipation of the liquid, which is conducive to the control of the pulping temperature and the guarantee of the pulping characteristics; moreover, because the lower layer The liquid in the dispersion zone is pushed from the outside to the inside, so that a feed port connected to the lower dispersion zone can be directly set on the shell of the dispersion stator, saving the design of an additional liquid inlet cavity, making the overall structure more compact, and the liquid flow in the dispersion zone shorter and smoother; in addition, the lower dispersion zone, where the liquid conveying direction is opposite to the direction of the liquid centrifugal force, is closer to the external liquid conveying pump, and the force of the conveying pump on the liquid in the lower dispersion zone is greater, making it easier to achieve forced circulation of the conveying pump, and the liquid direction in the upper dispersion zone is the same as the direction of the liquid centrifugal force, and the centrifugal force can play a conveying role, which is more conducive to improving the conveying efficiency.

(2) The lower spoiler blades at the bottom of the lower rotor can stir the liquid in the area below the lower rotor, drive the liquid in the area to rotate, push the liquid in the area out, and prevent the existence of a liquid dead zone in the area.

(3) The upper spoiler blades on the top of the upper rotor can stir the liquid in the area above the upper rotor. On the one hand, it can drive the liquid in this area to rotate and push the liquid in this area out to prevent the existence of a liquid dead zone in this area; on the other hand, it is also beneficial to push the liquid in the upper dispersion area upward from the upper liquid outlet channel to improve the conveying efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of the present invention, in which the double-dash line is the direction of the liquid, the dotted line is the direction of the powder, and the triple-dash line is the direction of the mixed material.

FIG2 is a cross-sectional view of the A-A section in FIG1.

Fig. 3 is a cross-sectional view of the B-B section in Fig. 1, in which the arrow indicates the rotation direction of the dispersion rotor.

FIG. 4 is a stereoscopic view of the dispersed stator from a bottom-up perspective.

FIG. 5 is a three-dimensional diagram of a dispersed stator from a top view.

FIG. 6 is a perspective view of the lower rotor.

FIG. 7 is a perspective view of the upper rotor.

In the figure: 1, dispersion stator; 11, housing; 12, partition; 13, liquid inlet; 14, lower stator ring; 141, lower stator teeth; 142, lower stator dispersion groove; 15, lower stator ring groove; 16, upper stator ring; 161, upper stator teeth; 162, upper stator dispersion groove; 17, upper stator ring groove; 2, lower rotor; 21, bottom plate; 22, lower connecting tube; 23, lower rotor ring; 231, lower rotor teeth; 232, lower rotor dispersion groove; 24, lower rotor ring groove; 25, lower disturbance flow blades; 3, upper rotor; 31, top plate; 32, upper connecting tube; 33, upper rotor ring; 331, upper rotor teeth; 332, upper rotor dispersion groove; 34, upper rotor ring groove; 35, upper spoiler blades; 4, mixing sleeve; 41, mixing chamber; 42, discharge port; 5, mixing rotor; 6, upper cover; 7, powder inlet tube; 8, powder breaking head; 9, powder conveying rotor; 10, lower dispersion area; 20, upper dispersion area; 30, central flow passage; 40, upper liquid outlet channel; 50, main shaft.

Detailed ways

The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

As shown in FIG1 , the liquid dispersion structure assembly of the present invention comprises a dispersion stator 1, a lower rotor 2, and an upper rotor 3. The lower rotor 2 and the upper rotor 3 are respectively arranged at the lower and upper parts of the dispersion stator 1 in a rotatable manner. The main shaft 50 is vertically arranged in the center of the liquid dispersion structure assembly, and the lower rotor 2 and the upper rotor 3 are sleeved on the main shaft 50. A mixing sleeve 4 is connected to the top of the liquid dispersion structure assembly, and a mixing chamber 41 is provided in the mixing sleeve 4. A discharge port 42 connected to the mixing chamber 41 is provided on the mixing sleeve 4. A mixing rotor 5 is arranged in the mixing chamber 41 of the mixing sleeve 4, and the mixing rotor 5 is sleeved on the main shaft 50. An upper cover 6 is connected to the top of the mixing sleeve 4, and a powder feed tube 7 is connected to the top surface of the upper cover 6. A powder scrambling head 8 and a powder conveying rotor 9 are arranged in the powder feed tube 7, and the powder scrambling head 8 and the powder conveying rotor 9 are sleeved on the main shaft 50.

As shown in Fig. 1, Fig. 4 and Fig. 5, the dispersion stator 1 comprises a cylindrical shell 11, a partition 12 is radially arranged inside the shell 11, and the partition 12 divides the inner cavity of the shell 11 into a lower dispersion area 10 and an upper dispersion area 20; a central flow passage 30 is provided in the center of the partition 12, and the central flow passage 30 connects the lower dispersion area 10 and the upper dispersion area 20. A liquid inlet 13 is provided at the lower part of the shell 11, and the liquid inlet 13 connects the lower dispersion area 10; an upper liquid outlet channel 40 is provided at the top of the shell 11, and the upper liquid outlet channel 40 connects the upper dispersion area 20. On the lower side of the partition 12, a plurality of coaxial lower stator rings 14 are vertically extended downward toward the lower dispersion area 10, and a spacing is provided between two adjacent lower stator rings 14 to form a lower stator ring groove 15; each lower stator ring 14 is provided with a plurality of lower stator teeth 141 evenly distributed along the circumferential direction, and the gap between two adjacent lower stator teeth 141 forms a lower stator dispersion groove 142. On the upper side of the partition 12, a plurality of coaxial upper stator rings 16 are vertically extended upward toward the upper dispersion area 20, and a spacing is provided between two adjacent upper stator rings 16 to form an upper stator ring groove 17; each upper stator ring 16 is provided with a plurality of upper stator teeth 161 evenly distributed along the axial direction, and the gap between two adjacent upper stator teeth 161 forms an upper stator dispersion groove 162.

As shown in Fig. 1 and Fig. 6, the lower rotor 2 has a bottom plate 21, and a lower connecting tube 22 is provided on the inner side of the bottom plate 21 and vertically extends upward, and the lower connecting tube 22 is sleeved on the main shaft 50. A plurality of coaxial lower rotor rings 23 are provided on the upper side surface of the bottom plate 21 and located on the outer side of the lower connecting tube 22, and a spacing is provided between two adjacent circles of the lower rotor rings 23, forming a lower rotor ring groove 24; a plurality of lower rotor teeth 231 are provided on each circle of the lower rotor ring 23, and the gap between two adjacent lower rotor teeth 231 forms a lower rotor dispersion groove 232. As shown in Fig. 1 and Fig. 2, the lower rotor 2 is arranged in the lower dispersion area 10, and the lower rotor ring 23 is opposite to the lower stator ring 14 of the dispersion stator 1 and is arranged at intervals, and the lower stator ring 14 is inserted into the lower rotor ring groove 24, the lower rotor ring 23 is inserted into the lower stator ring groove 15.

As shown in Fig. 1 and Fig. 8, the upper rotor 3 has a top plate 31, and an upper connecting tube 32 is provided inside the top plate 31 and vertically extends downward. The upper connecting tube 32 is sleeved on the main shaft 50; the upper connecting tube 32 abuts against the top surface of the lower connecting tube 22 of the lower rotor 2, which can improve the support strength and make the support more reliable. A plurality of coaxial upper rotor rings 33 are provided on the lower side of the top plate 31 and outside the upper connecting tube 32, and there is a spacing between two adjacent upper rotor rings 33 to form an upper rotor ring groove 34; a plurality of upper rotor teeth 331 are provided on each upper rotor ring 33, and the gap between two adjacent upper rotor teeth 331 forms an upper rotor dispersion groove 332. As shown in Fig. 1 and Fig. 3, the upper rotor 3 is arranged in the upper dispersion area 20, and the upper rotor ring 33 is opposite to the upper stator ring 16 of the dispersion stator 1 and arranged at intervals, and the upper stator ring 16 is inserted into the upper rotor ring groove 34, and the upper rotor ring 33 is inserted into the upper stator ring groove 17.

As shown in Figure 1, the liquid conveying direction of the lower dispersion zone 10 is from outside to inside in the radial direction, which is opposite to the direction of the liquid centrifugal force. The liquid conveying direction of the upper dispersion zone 20 is from inside to outside in the radial direction, which is the same as the direction of the liquid centrifugal force.

As shown in FIGS. 2 and 3 , in the present embodiment, the gap values of the lower stator dispersion grooves 142 and the lower rotor dispersion grooves 232 are greater than the gap values of the upper stator dispersion grooves 162 and the upper rotor dispersion grooves 332, that is, the gap value of the dispersion grooves in the lower dispersion zone 10 is greater than the gap value of the dispersion grooves in the upper dispersion zone 20. Since the liquid conveying direction of the lower dispersion zone 10 is opposite to the centrifugal force direction of the liquid, the dispersion grooves in the lower dispersion zone 10 have a larger gap value. While ensuring that the liquid stays in the lower dispersion zone 10 for a longer time and is fully dispersed, the liquid in the lower dispersion zone 10 also has a larger circulation space, which is beneficial to pushing the liquid from the outside to the inside and improving the dispersion efficiency.

As shown in FIG2 , in this embodiment, the lower stator dispersion groove 142 and the lower rotor dispersion groove 232 of the lower dispersion zone 10 are not opened in the radial direction, but are opened at a certain angle to the radial direction and tilted to one side. The lower stator dispersion groove 142 and the lower rotor dispersion groove 232 are tilted in opposite directions; the lower rotor dispersion groove 232 tilts backward from the outside to the inside in the direction of rotation of the lower rotor 2. When the lower rotor 2 rotates, the lower rotor dispersion groove 232 will produce an inward pushing force on the liquid. The force is opposite to the outward centrifugal force generated by the rotation of the liquid, which will offset a part of the centrifugal force of the liquid. Therefore, the centrifugal force of the lower dispersion zone 10 on the liquid is reduced, which is conducive to pushing the liquid from the outside to the inside, thereby improving the dispersion efficiency and dispersion effect. In other embodiments, the lower stator dispersion groove 142 and the lower rotor dispersion groove 232 can also be one of a radial groove and the other is an oblique groove, or both are radial grooves, which is conducive to improving the dispersion efficiency.

As shown in FIG. 3 , in this embodiment, the upper stator dispersion groove 162 and the upper rotor dispersion groove 332 of the upper dispersion zone 20 are not opened in the radial direction, but are opened at a certain angle to the radial direction and tilted to one side. The upper stator dispersion groove 162 and the upper rotor dispersion groove 332 are tilted in opposite directions. The upper rotor dispersion groove 332 is directed from outside to inside toward the upper rotor 3 The rotational forward direction is inclined forward, and when the upper rotor 3 rotates, the centrifugal force acting on the liquid can be increased, and an outward pushing force can be generated on the liquid, which is conducive to pushing the liquid from the inside to the outside, thereby improving the dispersion efficiency and dispersion effect. In other embodiments, the upper stator dispersion groove 162 and the upper rotor dispersion groove 332 can also be one of radial grooves and the other of oblique grooves, or both of them are radial grooves, which is conducive to improving the dispersion efficiency.

As shown in Figures 1 and 6, a plurality of lower spoiler blades 25 are provided on the lower side of the bottom plate 21 of the lower rotor 2. The lower spoiler blades 25 can stir the liquid in the area below the lower rotor 2, drive the liquid in the area to rotate, push the liquid in the area out, and prevent the existence of a liquid dead zone in the area.

As shown in Figures 1 and 7, a plurality of upper spoiler blades 35 are provided on the upper side of the top plate 31 of the upper rotor 3. The upper spoiler blades 35 can stir the liquid in the area above the upper rotor 3. On the one hand, they can drive the liquid in the area to rotate and push the liquid in the area out to prevent the existence of a liquid dead zone in the area; on the other hand, they are also conducive to pushing the liquid in the upper dispersion area 20 upward from the upper liquid outlet channel 40 to improve the conveying efficiency.

When the present invention is actually used, the main shaft 50 is driven by the driving mechanism to rotate at a high speed, thereby driving the lower rotor 2, the upper rotor 3, the mixing rotor 5, the powder breaking head 8 and the powder conveying rotor 9 to rotate at a high speed; the liquid enters the lower dispersion area 10 from the liquid inlet 13, and after being dispersed in the lower dispersion area 10, enters the upper dispersion area 20 through the central flow channel 30, and after being further dispersed in the upper dispersion area 20, enters the mixing chamber 41 through the upper liquid outlet channel 40; the powder enters from the powder inlet tube 7, is broken by the powder breaking head 8, and is conveyed to the mixing chamber 41 via the powder conveying rotor 9; the liquid and the powder are evenly mixed by the mixing rotor 5 in the mixing chamber 41, and then output from the discharge port 42.

The inner cavity of the shell 11 of the dispersion stator 1 of the present invention is divided into a lower dispersion area 10 and an upper dispersion area 20 by a partition 12; the dispersion stator 1 is provided with an upper and lower two-layer matching structure, wherein the lower matching structure is rotationally matched with the lower rotor 2, and the upper matching structure is rotationally matched with the upper rotor 3, that is, a double-layer dispersion stator 1 is adopted to simultaneously cooperate with the lower rotor 2 and the upper rotor 3 to realize layered dispersion. As shown in FIG1 , the liquid in the two-layer dispersion area of the liquid only needs to go through the "C"-shaped flow channel from outside to inside to outside. Compared with the existing single-layer structure, it has fewer components, a simpler internal flow channel structure, shortened process, higher dispersion efficiency, better dispersion effect, and the liquid only needs to go through three turns during the flow in the "C"-shaped flow channel, with smaller flow resistance, smoother flow, and better flow. The dynamic loss is smaller, and it is more conducive to the heat dissipation of the liquid, which is beneficial to the control of the pulping temperature and the guarantee of the pulp characteristics. Moreover, since the liquid in the lower dispersion area 10 is pushed from the outside to the inside, the liquid inlet 13 connected to the lower dispersion area 10 can be directly set on the shell 11 of the dispersion stator 1, which saves the design of an additional liquid inlet cavity, can make the overall structure more compact, and the liquid flow in the dispersion area is shorter and smoother. In addition, the lower dispersion area 10, where the liquid conveying direction is opposite to the direction of the liquid centrifugal force, is closer to the external liquid conveying pump, and the force of the conveying pump on the liquid in the lower dispersion area 10 is greater, making the forced circulation of the conveying pump easier to achieve, and the liquid direction of the upper dispersion area 20 is the same as the direction of the liquid centrifugal force, and the centrifugal force can play a conveying role, which is more conducive to improving the conveying efficiency.

The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention. For example, in other embodiments, the stator ring and/or rotor ring of the dispersion stator 1, the lower rotor 2, and the upper rotor 3 may also be a continuous annular plate, and stator dispersion grooves and rotor dispersion grooves may be formed on the annular plate to achieve the purpose of liquid dispersion.

Claims (10)

A liquid dispersion structure assembly, characterized in that it comprises a dispersion stator (1), a lower rotor (2) and an upper rotor (3); a partition (12) is arranged in a shell (11) of the dispersion stator (1), the partition (12) divides the inner cavity of the shell (11) into a lower dispersion area (10) and an upper dispersion area (20); a central flow passage (30) is provided in the center of the partition (12), and the central flow passage (30) connects the lower dispersion area (10) and the upper dispersion area (20); a liquid inlet (13) is provided on the shell (11), and the liquid inlet (13) connects the lower dispersion area (10); the shell (11) ) is provided with an upper liquid outlet channel (40) at the top, and the upper liquid outlet channel (40) is connected to the upper dispersion area (20); the dispersion stator (1) is provided with a lower matching structure and an upper matching structure in the lower dispersion area (10) and the upper dispersion area (20) respectively; a lower rotor (2) is provided in the lower dispersion area (10), and the lower rotor (2) is rotationally matched with the lower matching structure of the dispersion stator (1); an upper rotor (3) is provided in the upper dispersion area (20), and the upper rotor (3) is rotationally matched with the upper matching structure of the dispersion stator (1); the lower rotor (2) and the upper rotor (3) are sleeved on the main shaft (50); The lower matching structure of the dispersed stator (1) comprises a plurality of lower stator rings (14), each of which is provided with a plurality of lower stator dispersion grooves (142); a plurality of lower rotor rings (23) are correspondingly arranged on the lower rotor (2), each of which is provided with a plurality of lower rotor dispersion grooves (232); the lower stator ring (14) and the lower rotor ring (23) are arranged opposite to each other and spaced apart; The upper matching structure of the dispersed stator (1) comprises a plurality of upper stator rings (16), each of which is provided with a plurality of upper stator dispersed grooves (162); a plurality of upper rotor rings (33) are correspondingly arranged on the upper rotor (3), each of which is provided with a plurality of upper rotor dispersed grooves (332); and the upper stator rings (16) and the upper rotor rings (33) are arranged opposite to each other and spaced apart. According to the liquid dispersion structure assembly described in claim 1, it is characterized in that: the liquid conveying direction of the lower dispersion area (10) is radially from the outside to the inside, and the conveying direction is opposite to the direction of the centrifugal force of the liquid; the liquid conveying direction of the upper dispersion area (20) is radially from the inside to the outside, and the conveying direction is the same as the direction of the centrifugal force of the liquid. The liquid dispersion structure assembly according to claim 1 is characterized in that: the lower rotor (2) has a bottom plate (21), and the lower rotor ring (23) is vertically upwardly arranged on the bottom plate (21); a plurality of lower spoiler blades (25) are arranged on the lower side of the bottom plate (21); the upper rotor (3) has a top plate (31), and the upper rotor ring (33) is vertically downwardly arranged on the top plate (31); and a plurality of upper spoiler blades (35) are arranged on the upper side of the top plate (31). According to the liquid dispersion structure assembly as claimed in claim 1, it is characterized in that the dispersion groove gap value of the lower dispersion area (10) is greater than the dispersion groove gap value of the upper dispersion area (20). The liquid dispersion structure assembly according to claim 1 is characterized in that: the lower stator dispersion groove (142) and the lower rotor dispersion groove (232) are oblique grooves or radial grooves; or one of the lower stator dispersion groove (142) and the lower rotor dispersion groove (232) is an oblique groove and the other is a radial groove. The liquid dispersion structure assembly according to claim 5 is characterized in that: the lower rotor dispersion groove (232) is inclined backward from the outside to the inside toward the rotation direction of the lower rotor (2), and the lower stator dispersion groove (142) is inclined in the opposite direction to the lower rotor dispersion groove (232). The liquid dispersion structure assembly according to claim 1 is characterized in that: the upper stator dispersion groove (162) and the upper rotor dispersion groove (332) are oblique grooves or radial grooves; or one of the upper stator dispersion groove (162) and the upper rotor dispersion groove (332) is an oblique groove and the other is a radial groove. The liquid dispersion structure assembly according to claim 7 is characterized in that: the upper rotor dispersion groove (332) is inclined forward from the outside to the inside toward the rotation direction of the upper rotor (3), and the upper stator dispersion groove (162) is inclined in the opposite direction to the upper rotor dispersion groove (332). The liquid dispersion structure assembly according to claim 1 is characterized in that: the lower stator ring (14) and the upper stator ring (16) are respectively vertically arranged on the lower and upper sides of the partition (12); a plurality of stator teeth are arranged on the lower stator ring (14) and/or the upper stator ring (16), and the gaps between adjacent stator teeth constitute stator dispersion grooves; or, the lower stator ring (14) and/or the upper stator ring (16) are continuous annular plates, and stator dispersion grooves are opened on the annular plates; and/or, a plurality of rotor teeth are arranged on the lower rotor ring (23) and/or the upper rotor ring (33), and the gaps between adjacent rotor teeth constitute rotor dispersion grooves; or, the lower rotor ring (23) and/or the upper rotor ring (33) are continuous annular plates, and rotor dispersion grooves are opened on the annular plates. A powder-liquid mixing device, characterized in that: the liquid dispersion structure assembly described in claim 1 is adopted, a mixing sleeve (4) is connected to the top of the shell (11), a mixing chamber (41) is opened in the mixing sleeve (4), and a discharge port (42) connected to the mixing chamber (41) is provided on the mixing sleeve (4); a mixing rotor (5) is arranged in the mixing chamber (41), and the mixing rotor (5) is sleeved on a main shaft (50); a powder feed barrel (7) is connected to the top of the mixing sleeve (4), a powder breaking head (8) and a powder conveying rotor (9) are arranged above and below in the powder feed barrel (7), and the powder breaking head (8) and the powder conveying rotor (9) are sleeved on the main shaft (50).