CN220513862U - Solid-liquid mixing device for superfine powder - Google Patents

Abstract

The application relates to a solid-liquid mixing arrangement for superfine powder, including premixing unit, liquid feed unit, powder feed unit, conveying unit and dispersion unit, premixing unit is including premixing section of thick bamboo and first stirring unit, dispersion unit includes dispersion section of thick bamboo and second stirring unit, the second stirring unit include second driving motor and connect in second driving motor's second (mixing) shaft and third (mixing) shaft, fixed being equipped with dispersion blade on second (mixing) shaft and the third (mixing) shaft, conveying unit's one end connect in premixing section of thick bamboo, conveying unit's the other end connect in dispersion section of thick bamboo. The application is provided with the independent premixing unit and the independent dispersing unit, powder and liquid are premixed through the premixing unit to obtain a premixing material, and the premixing material is fully dispersed through the dispersing unit, so that the efficient mixing and dispersing effects are achieved.

Description

Solid-liquid mixing device for superfine powder

Technical Field

The application relates to a solid-liquid mixing technology, in particular to a solid-liquid mixing device for superfine powder.

Background

The superfine powder is not only a functional material, but also has wide application prospect for compounding and developing new functional materials. Ultrafine powder such as fumed silica, graphene and the like has the advantages of large specific surface area, high surface activity, high chemical reaction speed, high dissolution speed, high strength of sintered bodies, unique electrical property, magnetic property, optical property and the like due to fine granularity, narrow distribution and uniform quality, and is widely applied to the technical fields of electronic information, medicine, chemical industry and the like.

Because of the extremely large specific surface area and surface energy of the ultrafine powder, particles are easy to agglomerate and agglomerate in the preparation and post-treatment processes to form secondary agglomerate particles, the original excellent performance of the ultrafine particles is lost, and in the process that the ultrafine powder is dispersed into a small amount of liquid to form high-viscosity slurry, the surface of the ultrafine powder is often adsorbed with a large amount of gas, so that the powder particles and the liquid are sufficiently soaked very difficult, and the service performance of the ultrafine powder is affected.

Disclosure of Invention

In order to overcome the defects, the application provides a solid-liquid mixing device for superfine powder, wherein the device is provided with an independent premixing unit and a dispersing unit, powder and liquid are premixed through the premixing unit to obtain a premixed material, and the premixed material is fully dispersed through the dispersing unit, so that more efficient mixing and dispersing effects are achieved.

The technical scheme that this application adopted in order to solve its technical problem is:

the utility model provides a solid-liquid mixing arrangement for superfine powder, includes pre-mixing unit, liquid feed unit, powder feed unit, delivery unit and dispersion unit, pre-mixing unit include pre-mix a section of thick bamboo and install in pre-mix a section of thick bamboo on first stirring unit, dispersion unit include a dispersion section of thick bamboo and install in second stirring unit on the dispersion section of thick bamboo, second stirring unit include second driving motor and connect in second driving motor's second (mixing) shaft and third (mixing) shaft, second (mixing) shaft and third (mixing) shaft level arrange in the dispersion section of thick bamboo, be equipped with dispersion blade on second (mixing) shaft and the third (mixing) shaft is fixed, liquid feed unit with powder feed unit all connect in pre-mix a section of thick bamboo, delivery unit's one end connect in pre-mix a section of thick bamboo, delivery unit's the other end connect in a dispersion section of thick bamboo.

Optionally, the inside wall of a premixing section of thick bamboo is equipped with a plurality of parallel arrangement's baffle, first stirring unit includes a plurality of parallel arrangement's stirring rake, the stirring rake with baffle interval arrangement, the stirring rake with be located stirring rake top and below the baffle constitutes the teeter chamber, form multistage in the premixing section of thick bamboo the teeter chamber, the top of premixing section of thick bamboo is equipped with gas vent and manometer.

Optionally, the first stirring unit includes first driving motor, first (mixing) shaft and rotatory impeller, the one end fixed connection of first (mixing) shaft in first driving motor, the other end fixed connection of first (mixing) shaft in rotatory impeller, the stirring rake install in on the first (mixing) shaft, the stirring rake includes the oar formula agitator, rotatory impeller includes turbine formula agitator.

Optionally, a plurality of dispersing blade groups are arranged on the second stirring shaft and the third stirring shaft, and each dispersing blade group comprises a plurality of spirally rising dispersing blades.

Optionally, the dispersing blades are obliquely arranged on the second stirring shaft and the third stirring shaft, the second stirring shaft and the third stirring shaft are arranged in parallel, and an included angle between the dispersing blades and the central axis of the second stirring shaft is alpha, and alpha is 30-50 degrees.

Optionally, the second stirring shaft is fixedly connected to the second driving motor, the second stirring shaft is connected with the third stirring shaft through a transmission unit, the rotation direction of the second stirring shaft is opposite to that of the third stirring shaft, and a discharge opening is formed in the lower end of the dispersing cylinder.

Optionally, the conveying unit comprises a conveying pump and a conveying pipe connected to the conveying pump, one end of the conveying pipe is communicated with the premixing cylinder, and the other end of the conveying pipe is communicated with the dispersing cylinder.

Optionally, the conveying unit further comprises a feed back pipe, one end of the feed back pipe is communicated with the dispersing cylinder, and the other end of the feed back pipe is communicated with the conveying pipe.

Optionally, the liquid feeding unit includes a first jar body and install in the third stirring unit on the first jar body, the third stirring unit include third driving motor and connect in the stirring leaf of third driving motor, the upper end of the first jar body is equipped with first feed inlet, the lower extreme of the first jar body is fixed with liquid supply pipeline, liquid supply pipeline's one end connect in the first jar body, liquid supply pipeline's the other end is located in the premix section of thick bamboo, just liquid supply pipeline's the other end is equipped with the injection unit.

Optionally, the powder feeding unit includes the second jar body, the upper end of the second jar body is fixed with the second feed inlet, the lower extreme of the second jar body is fixed with powder supply pipe, the one end of powder supply pipe connect in the second jar body, the other end of powder supply pipe communicate in the premix section of thick bamboo, powder supply pipe connects in the air-blower.

The beneficial effects of this application are:

1) In the application, the powder naturally flows downwards under the action of the propelling force generated by positive pressure conveying of the blower, the suction force generated by the stirring shaft and the gravity of the powder, so that the dust-raising phenomenon is avoided; the small liquid drops sprayed from the liquid spraying unit move downwards under the suction force generated by the stirring shaft, the powder and the small liquid drops are in solid-liquid contact in the multistage stirring chamber, and the dust catching bodies in the form of the small liquid drops are easier to catch tiny powder particles, so that invalid mixing conditions caused by powder dust are effectively prevented, and the liquid and the powder are efficiently premixed in the premixing unit.

2) In the method, each stirring chamber of the multistage stirring chamber consists of one stirring paddle and two annular baffles, the stirring paddles are positioned at the upper part and the middle part of a first stirring shaft, powder and liquid flow are sucked by the stirring paddles to circulate through two circulating flow passages formed above and below the stirring paddles, and solid-liquid contact treatment is repeated for a plurality of times in each stirring chamber, so that the mixing efficiency is improved; because the outlet flow velocity of the rotary impeller is higher, the turbulence of the liquid near the impeller end is stronger, so that larger shearing force is generated, the viscosity of the materials can be effectively reduced while the materials are further mixed, and the mixed materials are easier to discharge.

3) In the method, a second stirring shaft and a third stirring shaft which are horizontally arranged are arranged in a dispersing cylinder, the two stirring shafts are driven by the same motor and have opposite rotation directions, a plurality of dispersing blades are fixed on the two stirring shafts, the dispersing blades are in multi-piece and spirally ascending arrangement, the dispersing blades and the central axis of the stirring shaft are not parallel, and in the rotating process, the dispersing blades drive materials to axially rotate and radially rotate; because the materials in the dispersing cylinder simultaneously have axial motion and circular motion, the stirring forms such as shearing stirring and diffusion stirring simultaneously, the effect of dispersing the materials is achieved, and the internal space of the dispersing cylinder is fully utilized.

4) The application is provided with the independent premixing unit and the independent dispersing unit, powder and liquid are premixed through the premixing unit to obtain a premixing material, and the premixing material is fully dispersed through the dispersing unit, so that the efficient mixing and dispersing effects are achieved.

Drawings

FIG. 1 is a schematic diagram of a solid-liquid mixing device according to the present application;

FIG. 2 is a graph of the distribution of the dispersive blade in the present application;

in the figure: 100-premixing units, 110-premixing cylinders, 111-baffles, 112-exhaust ports, 113-pressure gauges, 120-first stirring units, 121-first driving motors, 122-first stirring shafts, 123-rotating impellers, 124-stirring paddles,

200-liquid feeding unit, 210-first tank, 211-first feed port, 212-liquid supply pipe, 213-spraying unit, 214-first valve, 220-third stirring unit, 221-third driving motor, 222-stirring blade,

300-powder feeding unit, 310-second tank, 311-second feed inlet, 312-powder supply pipe, 313-blower,

400-conveying unit, 401-conveying pump, 402-conveying pipe, 403-feed back pipe, 404-second valve,

500-dispersing units, 510-dispersing cylinders, 511-discharge ports, 512-third valves, 520-second stirring units, 521-second driving motors, 522-second stirring shafts, 523-third stirring shafts and 524-dispersing blades.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below in connection with the embodiments of the present application. It should be apparent that the embodiments described herein are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the following figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so used may be interchanged where appropriate to enable the embodiments of the present application described herein to be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Examples: as shown in fig. 1 and 2, a solid-liquid mixing device for ultra-fine powder comprises a premixing unit 100, a liquid feeding unit 200, a powder feeding unit 300, a conveying unit 400 and a dispersing unit 500, wherein the premixing unit 100 comprises a premixing barrel 110 and a first stirring unit 120 mounted on the premixing barrel 110, the dispersing unit 500 comprises a dispersing barrel 510 and a second stirring unit 520 mounted on the dispersing barrel 510, the second stirring unit 520 comprises a second driving motor 521, a second stirring shaft 522 and a third stirring shaft 523 connected with the second driving motor 521, the second stirring shaft 522 and the third stirring shaft 523 are horizontally arranged in the dispersing barrel 510, dispersing blades 524 are fixedly arranged on the second stirring shaft 522 and the third stirring shaft 523, the liquid feeding unit 200 and the powder feeding unit 300 are both connected with the premixing barrel 110, one end of the conveying unit 400 is connected with the premixing barrel 110, and the other end of the conveying unit 400 is connected with the dispersing barrel 510.

The liquid feeding unit 200 is used for conveying liquid materials to the premixing barrel 110, the powder feeding unit 300 is used for conveying powder materials to the premixing barrel 110, the first stirring unit 120 is used for mixing the liquid materials and the powder materials into premixed materials, the conveying unit 400 is used for conveying the premixed materials in the premixing barrel 110 to the dispersing barrel 510, and the second stirring unit 520 is used for fully dispersing the premixed materials into a uniform solid-liquid mixture in the dispersing barrel 510. Optionally, the powder feeding unit 300 includes the air-blower 313, the first stirring unit 120 includes rotary impeller 123, be equipped with multistage teeter chamber in the premix barrel 110, the positive pressure that the powder passed through the air-blower in this application is carried and the suction effect of first (mixing) shaft has effectively prevented the raise dust of powder, and carry out the solid-liquid contact with the atomized liquid and reach the purpose of effective mixing in the multistage teeter chamber in the premix barrel, the mixed material realizes further mixing and has effectively reduced the viscosity of premix material through rotary impeller stirring, premix material rethread conveying unit carries to dispersion unit intensive mixing, utilize two parallel arrangement's (mixing) shaft in the dispersion unit, set up dispersion blade on two (mixing) shafts, in order to make the premix material fully disperse, make the mixture more even. The application is provided with the independent premixing unit and the independent dispersing unit, powder and liquid are premixed through the premixing unit, and the premixed materials are fully dispersed through the dispersing unit, so that the efficient mixing and dispersing effects are achieved.

As shown in fig. 1, the liquid feeding unit 200 includes a first tank 210 and a third stirring unit 220 mounted on the first tank 210, the third stirring unit 220 includes a third driving motor 221 and a stirring blade 222 connected to the third driving motor 221, a first feeding port 211 is provided at an upper end of the first tank 210, a liquid supply pipe 212 is fixedly provided at a lower end of the first tank 210, one end of the liquid supply pipe 212 is connected to the first tank 210, the other end of the liquid supply pipe 212 is located in the premix barrel 110, and a spraying unit 213 is provided at the other end of the liquid supply pipe 212. The liquid material is added into the first tank 210 through the first feed inlet 211, the liquid feed unit 200 is provided with a liquid stirring blade 222, the liquid is generally a mixed liquid of a solvent and a surfactant, the liquid is stirred to a certain extent before solid-liquid mixing, so that the liquid is uniformly mixed to facilitate the rapid wetting of the subsequent powder, and the liquid forms a plurality of droplets through the spraying unit 213 to enter the premixing barrel 110 so as to facilitate the mixing.

As shown in fig. 1, the powder feeding unit 300 includes a second tank 310, a second feeding port 311 is fixedly provided at an upper end of the second tank 310, a powder feeding pipe 312 is fixedly provided at a lower end of the second tank 310, one end of the powder feeding pipe 312 is connected to the second tank 310, the other end of the powder feeding pipe 312 is connected to the premix barrel 110, and the powder feeding pipe 312 is connected to a blower 313. Powder material is added into the second tank 310 through the second feeding hole 311, the powder feeding unit 300 is arranged at the top of the premixing barrel 110 and adopts the blower 313 to convey powder in a positive pressure mode, when powder particles enter the premixing barrel through the blower, the powder naturally flows downwards through the propelling force generated by the positive pressure conveying of the blower, the suction force generated by the first stirring shaft 122 and the gravity inertia of the powder, and dust is prevented from happening.

The powder is in solid-liquid contact with small liquid drops ejected from the liquid ejecting unit 213 below (the small liquid drops move downwards due to the suction force generated by the stirring shaft) when flowing downwards, the method can prevent ineffective mixing caused by dust rising of the powder, and dust catching bodies in the form of small liquid drops are easier to catch tiny dust particles, so that effective wetting is realized, the solid-liquid mixing efficiency is improved, and the possibility of secondary aggregate formation is reduced.

The third valve 512 is disposed on the discharge port 511, the second valve 404 is disposed on the feed back pipe 403, and the first valve 214 is disposed on the liquid supply pipe 212, and in operation, the opening and closing states and opening magnitudes of the valves are selected according to the needs to meet the requirements of normal operation of the device.

As shown in fig. 1, the inner side wall of the premixing barrel 110 is provided with a plurality of baffles 111 arranged in parallel, the first stirring unit 120 includes a plurality of stirring paddles 124 arranged in parallel, the stirring paddles 124 are arranged at intervals with the baffles 111, the stirring paddles 124 and the baffles 111 above and below the stirring paddles 124 form a stirring chamber, multiple stages of stirring chambers are formed in the premixing barrel 110, and the top of the premixing barrel 110 is provided with an air outlet 112 and a pressure gauge 113.

The baffle 111 is in a ring structure, and the stirring paddles 124 are located at the center of the baffle 111, as shown in fig. 1, each stirring paddle 124 forms a stirring chamber with the baffle above and the baffle below, arrows in fig. 1 indicate the flow direction of the material, the material flows in the stirring chamber to increase the contact time between the powder and the liquid, and since each stirring paddle forms a stirring chamber with the baffle above and below, a plurality of stages of stirring chambers are arranged in the vertical direction in the premix barrel 110. During operation, the powder and the liquid are fully contacted and wetted in the multistage stirring chamber, and enter the lower rotating impeller 123 along with the gradual formation and aggregation of the mixed materials, and small gaps are formed between the plurality of blades in the rotating impeller 123 and the inner wall of the premixing barrel 110, so that all the mixed materials can obtain kinetic energy under the rotation of the rotating impeller as much as possible, and liquid turbulence is generated, so that the materials are mixed more uniformly.

The filter screen is arranged in the exhaust port 112, which can be externally connected with a pulse device for cleaning, and the number of the exhaust ports can be two or more, so that the other exhaust port can be immediately opened when the exhaust port is blocked in the actual working process, and the operation is prevented from being stopped due to the blocking of the exhaust port. The premixing barrel is in a negative pressure state in the operation process of the equipment, and the pressure condition in the premixing barrel is monitored in real time through a pressure gauge so as to adjust the stirring rotating speed and the air pressure of the air blower.

Each stirring chamber of the multistage stirring chambers consists of a stirring paddle 124 and two annular baffles 111, the stirring paddle 124 is positioned at the upper part and the middle part of the first stirring shaft 122, powder and liquid flow are sucked by the stirring paddle to circulate through two circulating flow passages formed above and below the stirring paddle, and solid-liquid contact treatment is repeated in each stirring chamber, so that the mixing efficiency is improved.

As shown in fig. 1, the first stirring unit 120 includes a first driving motor 121, a first stirring shaft 122 and a rotating impeller 123, one end of the first stirring shaft 122 is fixedly connected to the first driving motor 121, the other end of the first stirring shaft 122 is fixedly connected to the rotating impeller 123, the stirring paddle 124 is mounted on the first stirring shaft 122, the stirring paddle 124 includes a paddle stirrer, and the rotating impeller 123 includes a turbine stirrer. The stirring paddle 124 can be any of a paddle type stirrer, such as a Ping Sheshi paddle, a pitched blade paddle, a variable cross-section folded blade paddle, etc.; the paddle stirrer has the advantage of low power consumption in the mixing of solid-liquid suspensions.

The rotary impeller 123 may be any of turbine type agitators, such as a straight blade disc type impeller, a curved blade disc type impeller, a hinge blade turbine, etc.; compared with other types of stirrers, the turbine stirrer has the advantages that the overall circulation flow loop is more tortuous, and the liquid turbulence near the blade ends is stronger due to higher outlet flow velocity, so that larger shearing force is generated, the viscosity of materials can be effectively reduced while further mixing is carried out, and the mixed materials are easier to discharge.

As shown in fig. 2, fig. 2 is a section of the second stirring shaft taken along the axial direction of the second stirring shaft 522, and a plurality of dispersing blade groups are disposed on the second stirring shaft 522 and the third stirring shaft 523, and each dispersing blade group includes a plurality of spirally rising dispersing blades 524. By spiral elevation is meant that at least one point of the dispersive blades 524 in the same set are on the same spiral.

The dispersing blades 524 are obliquely arranged on the second stirring shaft 522 and the third stirring shaft 523, the second stirring shaft 522 and the third stirring shaft 523 are arranged in parallel, and as shown in fig. 2, an included angle between the dispersing blades 524 and the central axis of the second stirring shaft 522 is between 30 and 50 degrees. Likewise, the angle between the dispersing blade 524 and the central axis of the third stirring shaft 523 is α.

As shown in fig. 1, the second stirring shaft 522 is fixedly connected to the second driving motor 521, the second stirring shaft 522 is connected to the third stirring shaft 523 by a transmission unit, the rotation directions of the second stirring shaft 522 and the third stirring shaft 523 are opposite, and a discharge opening 511 is provided at the lower end of the dispersing cylinder 510. The transmission unit comprises a gear synchronous belt assembly, a gear fluted disc assembly and the like.

A second stirring shaft 522 and a third stirring shaft 523 which are horizontally arranged are arranged in the dispersing cylinder 510, the two stirring shafts are driven by the same motor and have opposite rotation directions, a plurality of dispersing blades 524 are fixed on the two stirring shafts, the dispersing blades 524 are obliquely arranged with the two stirring shafts, and in the rotating process, the dispersing blades 524 drive materials to axially rotate and radially rotate; because the materials in the dispersing cylinder 510 have both axial movement and circular movement, the materials can be efficiently dispersed by simultaneously having stirring modes such as shearing stirring and diffusion stirring, and the space in the dispersing cylinder is fully utilized.

The second stirring shaft 522 and the third stirring shaft 523 are provided with a plurality of dispersing blades 524 which are arranged in a spiral ascending manner, as shown in fig. 2, the included angle between the dispersing blades 524 and the central axes of the two stirring shafts is alpha, alpha is 30-50 degrees, the materials need to be pushed to perform axial and radial bidirectional movement during dispersing, so that strong stirring shearing force is generated to realize a high dispersing effect, when the included angle alpha is too small, the blades lack necessary axial movement when driving the materials to rotate around the stirring shafts, when the included angle alpha is too large, the blades lack necessary radial movement when driving the materials to rotate around the stirring shafts, all stirring effects are reduced, and therefore, the proper included angle alpha needs to be selected, so that the materials simultaneously perform axial and radial movement.

As shown in fig. 1, the delivery unit 400 includes a delivery pump 401 and a delivery pipe 402 connected to the delivery pump 401, one end of the delivery pipe 402 is connected to the premix barrel 110, and the other end of the delivery pipe 402 is connected to the dispersion barrel 510.

The conveying unit 400 further comprises a material returning pipe 403, one end of the material returning pipe 403 is communicated with the dispersing cylinder 510, and the other end of the material returning pipe 403 is communicated with the conveying pipe 402. The premixed material in the premixing tube 110 is conveyed into the dispersing tube 510 by the conveying pump 410 through the conveying pipe 402, and the material can repeatedly enter the dispersing tube 510 through the material return pipe 403 for circulation and dispersion, so as to ensure the dispersing effect of the material.

The operation process of the application comprises the following steps: the method comprises the following steps:

step 1: liquid is sprayed into the premixing cylinder 110 through the liquid supply pipeline 212 and the spraying unit 213, powder is conveyed to the premixing cylinder 110 through the powder supply pipeline 312 and the blower 313, the powder naturally flows downwards by the propelling force generated by positive pressure conveying of the blower 313, the suction force generated by stirring of the first stirring shaft 122 and the gravity inertia of the powder, and the powder is in solid-liquid contact with small liquid drops sprayed from the liquid spraying unit 213 below, wherein the suction force generated by the first stirring shaft enables the small liquid drops to move downwards;

step 2: powder and liquid are sucked by a stirring paddle 124 on a first stirring shaft 122 and circulate in two circulation passages formed above and below the stirring paddle, the powder and the liquid are fully contacted in a multistage stirring chamber for a plurality of times, along with the solid-liquid contact, the premixed material gradually gathers and enters a rotary impeller 123 below, and larger shearing force is generated by the rotary impeller 123, so that the premixed material is discharged;

step 3: the discharged premixed material is conveyed into the dispersing cylinder 510 under the action of the conveying pump 401, the second stirring shaft 522 and the third stirring shaft 523 in the dispersing cylinder 510 reversely rotate under the action of the second driving motor 521, and the dispersing blades 524 drive the material to axially rotate and radially rotate, so that the material can be efficiently dispersed; the material repeatedly enters the dispersing cylinder 510 for circulating dispersion through the material return pipe 403 for a plurality of times so as to ensure the dispersing effect of the material; during the dispersing process, the third valve 512 is closed, so that the material circularly flows in the dispersing unit;

step 4: when the dispersion is completed, the third valve 512 is opened so that the uniformly dispersed material is discharged through the discharge port 511.

It should be noted that it would be apparent to those skilled in the art that several variations and modifications could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A solid-liquid mixing device for superfine powder is characterized in that: including premixing unit (100), liquid feed unit (200), powder feed unit (300), delivery unit (400) and dispersion unit (500), premixing unit (100) including premix section of thick bamboo (110) and install in first stirring unit (120) on premix section of thick bamboo (110), dispersion unit (500) including dispersion section of thick bamboo (510) and install in second stirring unit (520) on dispersion section of thick bamboo (510), second stirring unit (520) including second driving motor (521) and connect in second driving motor (521) second (522) and third (523) stirring axle, second (522) and third (523) stirring axle horizontal arrangement in dispersion section of thick bamboo (510), be equipped with dispersion blade (524) on second (522) and the third (523) stirring axle, liquid feed unit (200) and powder feed unit (300) all are connected in premix section of thick bamboo (110), delivery unit (400) connect in delivery unit (400) other end in premix section of thick bamboo (510).

2. The solid-liquid mixing device for ultra-fine powder according to claim 1, wherein: the inside wall of a premixing barrel (110) is provided with a plurality of baffles (111) which are arranged in parallel, a first stirring unit (120) comprises a plurality of stirring paddles (124) which are arranged in parallel, the stirring paddles (124) are arranged at intervals with the baffles (111), the stirring paddles (124) and the baffles (111) which are arranged above and below the stirring paddles (124) form a stirring chamber, a plurality of stages of stirring chambers are formed in the premixing barrel (110), and an exhaust port (112) and a pressure gauge (113) are arranged at the top of the premixing barrel (110).

3. The solid-liquid mixing device for ultra-fine powder according to claim 2, wherein: the first stirring unit (120) comprises a first driving motor (121), a first stirring shaft (122) and a rotary impeller (123), one end of the first stirring shaft (122) is fixedly connected with the first driving motor (121), the other end of the first stirring shaft (122) is fixedly connected with the rotary impeller (123), a stirring paddle (124) is arranged on the first stirring shaft (122), the stirring paddle (124) comprises a paddle stirrer, and the rotary impeller (123) comprises a turbine stirrer.

4. The solid-liquid mixing device for ultra-fine powder according to claim 1, wherein: a plurality of dispersing blade groups are arranged on the second stirring shaft (522) and the third stirring shaft (523), and each dispersing blade group comprises a plurality of spirally rising dispersing blades (524).

5. The solid-liquid mixing device for ultra-fine powder according to claim 4, wherein: the dispersing blades (524) are obliquely arranged on the second stirring shaft (522) and the third stirring shaft (523), the second stirring shaft (522) and the third stirring shaft (523) are arranged in parallel, and an included angle between the dispersing blades (524) and the central axis of the second stirring shaft (522) is alpha, and alpha is 30-50 degrees.

6. The solid-liquid mixing device for ultra-fine powder according to claim 4, wherein: the second stirring shaft (522) is fixedly connected to the second driving motor (521), the second stirring shaft (522) is connected with the third stirring shaft (523) through a transmission unit, the rotation direction of the second stirring shaft (522) is opposite to that of the third stirring shaft (523), and a discharge opening (511) is formed in the lower end of the dispersing cylinder (510).

7. The solid-liquid mixing device for ultra-fine powder according to claim 1, wherein: the conveying unit (400) comprises a conveying pump (401) and a conveying pipe (402) connected to the conveying pump (401), one end of the conveying pipe (402) is communicated with the premixing cylinder (110), and the other end of the conveying pipe (402) is communicated with the dispersing cylinder (510).

8. The solid-liquid mixing device for ultra-fine powder according to claim 7, wherein: the conveying unit (400) further comprises a feed back pipe (403), one end of the feed back pipe (403) is communicated with the dispersing cylinder (510), and the other end of the feed back pipe (403) is communicated with the conveying pipe (402).

9. The solid-liquid mixing device for ultra-fine powder according to claim 1, wherein: the liquid feeding unit (200) comprises a first tank body (210) and a third stirring unit (220) arranged on the first tank body (210), the third stirring unit (220) comprises a third driving motor (221) and stirring blades (222) connected with the third driving motor (221), a first feeding port (211) is formed in the upper end of the first tank body (210), a liquid feeding pipeline (212) is fixedly arranged at the lower end of the first tank body (210), one end of the liquid feeding pipeline (212) is connected with the first tank body (210), the other end of the liquid feeding pipeline (212) is located in the premixing barrel (110), and an injection unit (213) is arranged at the other end of the liquid feeding pipeline (212).

10. The solid-liquid mixing device for ultra-fine powder according to claim 1, wherein: the powder feeding unit (300) comprises a second tank body (310), a second feeding port (311) is fixedly arranged at the upper end of the second tank body (310), a powder feeding pipeline (312) is fixedly arranged at the lower end of the second tank body (310), one end of the powder feeding pipeline (312) is connected with the second tank body (310), the other end of the powder feeding pipeline (312) is communicated with the premixing barrel (110), and the powder feeding pipeline (312) is connected with a blower (313).