High-speed circulating dispersion pulping system and pulping method

Abstract

The invention belongs to the technical field of pulping, and particularly relates to a high-speed circulating dispersion pulping system and a pulping method. The pulping system comprises a rack, the powder mixing device is mounted on the rack; a circulating mixing device; a powder-liquid matched conveying device; a dispersing and mixing device; a finished product tank; the powder-liquid matched conveying device comprises a mounting frame, a circular tank body mounted on the mounting frame, a first input port, a second input port, an output port and a dispersing assembly, wherein the first input port, the second input port and the output port are formed in the circular tank body, and the dispersing assembly is arranged in the circular tank body between the output port and the second input port. The first input port and the output port are located at the same height, and the second input port is located below the output port. On one hand, the input cost is reduced, the conveying completeness of the powder is ensured, on the other hand, the liquid and the powder are preliminarily and roughly mixed in the powder-liquid matched conveying device, and slurry can be circularly circulated between the powder-liquid matched conveying device and the circulating mixing device in a reciprocating manner, so that the dispersion quality and the dispersion efficiency of the slurry are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pulping, and particularly relates to a high-speed circulating and dispersing pulping system and a pulping method. Background Art

[0002] At present, in various industries such as the new energy industry, coating industry, cosmetics industry, food industry, printing ink, and nanocomposites, the preparation process of slurry is generally to quantitatively and stepwise add different powder materials and liquid materials into a stirring device according to the formula regulations, and stir and mix for a long time to achieve homogeneous dispersion between the powder and liquid materials. In the process of preparing lithium batteries, as the most front-end process, the quality of the obtained slurry will have a significant impact on the entire production process. In the pulping method of lithium batteries, powder is usually transported into a liquid and mixed and dispersed in a powder-liquid mixing device to obtain a homogeneous slurry. The more uniform the obtained slurry is, the higher the quality of the prepared lithium battery will be.

[0003] Existing pulping systems mostly adopt a powder mixing device and a circulating mixing device, and then transport the two to a slurry dispersing device through an independent conveying device for dispersion. If uniform dispersion is desired, multiple dispersing devices are set up for circulating dispersion, resulting in problems such as large overall volume, low efficiency, and high cost. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of high cost, many devices, and large volume existing in the prior art, and provide a high-speed circulating and dispersing pulping system and a pulping method that jointly transport powder and liquid, and use the mixed liquid in the circulating mixing device to bring the powder into the circulating mixing device for dispersion and mixing.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] As a first aspect, a high-speed circulating and dispersing pulping system includes:

[0007] A frame;

[0008] A powder mixing device installed on the frame for stirring and mixing powder;

[0009] A circulating mixing device for stirring and mixing liquid;

[0010] A powder-liquid combined conveying device arranged below the powder mixing device;

[0011] A dispersion and mixing device that is connected to the circulating mixing device through a pipeline and is used for dispersing and mixing the mixed slurry in the circulating mixing device;

[0012] A finished product tank, connected to the pipeline of the dispersing and mixing device, and used for storing or transferring the slurry mixed by the dispersing and mixing device;

[0013] The powder-liquid combination conveying device comprises a mounting frame, a circular tank body mounted on the mounting frame, a first input port, a second input port and an output port arranged on the circular tank body, and a dispersion component arranged in the circular tank body between the output port and the second input port; the first input port and the output port are located at the same height, and the second input port is located below the output port; the discharge port of the powder mixing device is connected to the first feed port pipeline, and the discharge port of the circulation mixing device is connected to the second input port pipeline; the feed port of the circulation mixing device is connected to the output port, and the circulation mixing device and the powder-liquid combination conveying device perform reciprocating circulation of the slurry.

[0014] Furthermore, the dispersed assembly comprises:

[0015] A first driving mechanism installed on the circular tank;

[0016] A dispersion shaft, arranged for transmission with the output end of the first driving mechanism;

[0017] A dispersion chamber is arranged inside the circular tank body;

[0018] A lower stator, a bidirectional stator and an upper stator are fixedly arranged on the inner wall of the dispersion chamber from bottom to top in sequence;

[0019] The primary rotor and the secondary rotor are sleeved on the dispersion shaft and rotate along with the dispersion shaft;

[0020] At least one dispersion impeller, fixedly arranged on the primary rotor and / or the secondary rotor;

[0021] The primary rotor, the lower stator and the corresponding lower part of the bidirectional stator form a primary dispersing assembly for dispersing the slurry; the secondary rotor, the upper stator and the corresponding upper part of the bidirectional stator form a secondary dispersing assembly for dispersing the slurry.

[0022] Further, the lower stator comprises a lower stator plate fixedly mounted on the inner wall of the dispersion chamber, and a first stator gear ring fixedly arranged on the upper end surface of the lower stator plate;

[0023] The bidirectional stator comprises a bidirectional stator disc, a second stator gear ring and a third stator gear ring symmetrically mounted on the lower upper end surface of the bidirectional stator disc;

[0024] The upper stator comprises an upper stator plate fixedly mounted on the inner wall of the dispersion chamber and a fourth stator gear ring mounted on the lower end surface of the upper stator plate.

[0025] Further, the primary rotor includes a primary rotor disk sleeved on the dispersion shaft, a first upper rotor gear ring and a second upper rotor gear ring fixedly arranged on the upper end face of the primary rotor disk, and a first lower rotor gear ring fixedly arranged on the lower end face of the primary rotor disk;

[0026] The first lower rotor gear ring cooperates with the first stator gear ring and is located outside the first stator gear ring;

[0027] The second stator gear ring is arranged in the interval gap between the first upper rotor gear ring and the second upper rotor gear ring.

[0028] Further, the secondary rotor includes a secondary rotor disk sleeved on the dispersion shaft, a third upper rotor gear ring and a fourth upper rotor gear ring fixedly arranged on the upper end face of the secondary rotor disk, and a second lower rotor gear ring fixedly arranged on the lower end face of the secondary rotor disk;

[0029] The third stator gear ring is arranged in the interval gap between the third upper rotor gear ring and the fourth upper rotor gear ring;

[0030] The second lower rotor gear ring cooperates with the third stator gear ring and is located outside the third stator gear ring.

[0031] Further, there are two dispersion blades, and the two dispersion blades are respectively arranged on the primary rotor and the secondary rotor and rotate following the dispersion shaft.

[0032] Further, a discharging assembly corresponding to the output port is arranged inside the circular tank body; the discharging assembly includes a discharging cavity arranged inside the circular tank body, a discharging blade sleeved on the dispersion shaft, and a discharging stator fixedly arranged on the inner wall of the discharging cavity;

[0033] The output port is communicated with the discharging cavity.

[0034] Further, a powder delivery assembly is arranged on the pipeline between the powder mixing device and the powder-liquid combined conveying device. The powder delivery assembly includes a "⊥"-shaped delivery pipe connected to the output end of the powder mixing device, a powder delivery motor installed at one end of the "⊥"-shaped delivery pipe, and a propeller coaxially arranged with the output shaft of the powder delivery motor;

[0035] One end of the "⊥"-shaped delivery pipe far from the powder delivery motor is communicated with the first input port.

[0036] Further, the circulation mixing device is communicated with the second input port through a liquid slurry delivery assembly. The liquid slurry delivery assembly includes a rotor pump and a condenser installed on the pipeline corresponding to the output port of the circulation mixing device.

[0037] Further, the circulation mixing device includes a circulation tank body, a first tank cover covering the top end of the circulation tank body, a first circulation motor installed on the first tank cover, a first circulation dispersion shaft coaxially connected to the output shaft of the first circulation motor, and a first circulation paddle sleeved and installed at the end of the first circulation dispersion shaft.

[0038] Further, the powder mixing device includes a premixing tank body, a premixing motor installed on the top end of the premixing tank body, a premixing stirring shaft coaxially connected to the output shaft of the premixing motor, and a premixing stirring paddle installed on the premixing stirring shaft. The premixing stirring paddle includes a first paddle blade and a second paddle blade. The first paddle blade and the second paddle blade are centrosymmetric about the center of the premixing stirring shaft, and both the first paddle blade and the second paddle blade are fixed on the premixing stirring shaft through a support frame.

[0039] As a second aspect, a pulping method of a high-speed circulation dispersion pulping system includes the following steps:

[0040] Step 1: Add the powder to be mixed to the powder mixing device, and at the same time add the liquid to be mixed to the circulation mixing device;

[0041] Step 2: Start the powder mixing device and the circulation mixing device to stir and mix the corresponding materials;

[0042] Step 3: Start the powder-liquid combined conveying device to conduct rough mixing and conveying of the powder in the powder mixing device and the liquid in the circulation mixing device, and convey it to the circulation mixing device;

[0043] Step 4: Start the circulation mixing device to mix and stir the input slurry; and conduct circulating mixing of the slurry between the circulation mixing device and the powder-liquid combined conveying device;

[0044] Step 5: After mixing is completed, convey it to the dispersion mixing device;

[0045] Step 6: Start the dispersion mixing device to conduct fine mixing of the input slurry;

[0046] Step 7: After fine mixing is completed, convey the slurry to the finished product tank.

[0047] Specifically, the output port of the powder-liquid combined conveying device is connected to the feed port of the dispersion mixing device through a pipeline, and the powder-liquid combined conveying device directly conveys the roughly mixed slurry into the dispersion mixing device for fine mixing.

[0048] The beneficial effects of the high-speed circulation dispersion pulping system and the pulping method of the present invention are:

[0049] In the present invention, the liquid and the powder are independently stirred and mixed to obtain a uniformly mixed liquid mixture and a powder mixture. Then, a powder-liquid coordinated conveying device is used to simultaneously obtain the mixed powder in the powder mixing device and the mixed liquid in the circulating mixing device. A dispersion component provided on the circular tank body is used to roughly mix the mixed powder and the mixed liquid, and the slurry after rough mixing is circulated and dispersed multiple times between the circulating mixing device and the powder-liquid coordinated conveying device to perform semi-fine mixing on the solid-liquid slurry. Finally, the slurry after semi-fine mixing is conveyed into a dispersion and mixing device for fine mixing. The present invention ingeniously uses the same powder-liquid coordinated conveying device to convey the powder and the liquid, and uses the fluidity of the liquid to carry the powder out. On the one hand, it reduces the input cost and ensures the complete conveying of the powder. On the other hand, it performs preliminary rough mixing of the liquid and the powder in the powder-liquid coordinated conveying device, and reciprocally circulates the slurry between the powder-liquid coordinated conveying device and the circulating mixing device, thereby improving the dispersion quality and dispersion efficiency of the slurry.

[0050] The first input port of the powder-liquid coordinated conveying device in the embodiment of the present invention is communicated with the discharge port of the powder mixing device, and the second input port is communicated with the discharge port of the circulating mixing device. The second input port is arranged below the output port, that is, the liquid is output upward from the lower part of the dispersion component, driving the powder entering the dispersion component to be output from the output port, avoiding the situation that the slurry roughly mixed in the dispersion component precipitates at the bottom of the circular tank due to the action of gravity. The powder-liquid coordinated conveying device of the present invention adopts the form of liquid entering from the bottom and exiting from the top. The mixed liquid can quickly carry out the added powder out of the dispersion cavity, is not easy to block the pipe, avoids the tank body from generating high temperature and high pressure, and at the same time avoids the slurry from returning to the powder pipeline and introducing air bubbles into the slurry. Brief Description of the Drawings

[0051] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0052] Figure 1 is a three-dimensional view of the high-speed circulating dispersion pulping system in the embodiment of the present invention.

[0053] Figure 2 is Figure 1 a cross-sectional view of

[0054] Figure 3 is Figure 1 a top view of

[0055] Figure 4 is a first cross-sectional view of the powder-liquid coordinated conveying device in the embodiment of the present invention.

[0056] Figure 5 is Figure 4 an enlarged view of part A in

[0057] Figure 6It is the second cross-sectional view of the powder-liquid combined conveying device according to the embodiment of the present invention.

[0058] Figure 7 It is Figure 6 The enlarged view of position B in

[0059] Figure 8 It is the partial structural schematic diagram of the powder-liquid combined conveying device according to the embodiment of the present invention.

[0060] Figure 9 It is Figure 8 The cross-sectional view of

[0061] Figure 10 It is the internal structural schematic diagram of the powder-liquid combined conveying device in the embodiment of the present invention.

[0062] Figure 11 It is the partial structural schematic diagram of the dispersion component of the powder-liquid combined conveying device in the embodiment of the present invention.

[0063] Figure 12 It is the flow chart of the pulping method of the high-speed circulation dispersion pulping system in the embodiment of the present invention.

[0064] In the figure: 1, frame; 2, powder mixing device; 3, powder-liquid combined conveying device; 31, mounting frame; 32, circular tank body; 33, first input port; 34, second input port; 35, output port; 36, dispersion component; 361, first driving mechanism; 362, dispersion shaft; 363, dispersion cavity; 364, lower stator; 3641, lower stator disk; 3642, first stator gear ring; 365, bidirectional stator; 3651, bidirectional stator disk; 3652, second stator gear ring; 3653, third stator gear ring; 366, upper stator; 3661, upper stator disk; 3662, fourth stator gear ring; 367, primary rotor; 3671, primary rotor disk; 3672, first upper rotor gear ring; 3673, second upper rotor gear ring; 3674, first lower rotor gear ring; 368, secondary rotor; 3681, secondary rotor disk; 3682, third upper rotor gear ring; 3683, fourth upper rotor gear ring; 3684, second lower rotor gear ring; 369, dispersion impeller; 4, dispersion mixing device; 5, raw liquid material tank; 6, discharge component; 61, discharge cavity; 62, discharge paddle; 63, discharge stator; 7, powder delivery component; 71, "⊥"-shaped delivery pipe; 72, powder delivery motor; 73, propeller; 8, slurry delivery component; 9, circulation mixing device. Detailed implementation manners

[0065] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0066] As Figures 1 - 11 shown in the specific embodiment of a high-speed circulating dispersion pulping system of the present invention, it includes a frame 1, a powder mixing device 2 installed on the frame 1, a circulating mixing device 9, a powder-liquid coordinated conveying device 3, a dispersion mixing device 4, and a finished product tank. Among them, the powder mixing device 2 is used for stirring and mixing powders, the circulating mixing device 9 is used for stirring and mixing liquids, the powder-liquid coordinated conveying device 3 is arranged below the powder mixing device 2, and the dispersion mixing device 4 is connected to the circulating mixing device 9 through pipelines and is used for dispersing and mixing the mixed slurry in the circulating mixing device 9. The finished product tank is connected to the dispersion mixing device 4 through pipelines and is used for storing or transferring the slurry mixed by the dispersion mixing device 4. As a preferred implementation manner, the powder-liquid coordinated conveying device 3 in this embodiment is also connected to the dispersion mixing device 4 through pipelines. During specific use, the mixed slurry in the powder-liquid coordinated conveying device 3 can directly enter the dispersion mixing device 4 for dispersion mixing, or can first perform circulating mixing between the powder-liquid coordinated conveying device 3 and the circulating mixing device 9 and then enter the dispersion mixing device 4 for more refined dispersion mixing.

[0067] It should be elaborated in detail that the powder-liquid coordinated conveying device 3 in this embodiment includes a mounting frame 31, a circular tank body 32 installed on the mounting frame 31, a dispersion component 36 installed on the circular tank body 32, a first input port 33 arranged on the upper side wall of the circular tank body 32, a second input port 34 arranged on the lower end face of the circular tank body 32, and an output port 35 arranged in the middle of the circular tank body 32; the discharge port of the powder mixing device 2 is connected to the first feed port through pipelines, and the discharge port of the circulating mixing device 9 is connected to the second input port 34 through pipelines; the feed port of the circulating mixing device 9 is connected to the output port 35, and the circulating mixing device 9 and the powder-liquid coordinated conveying device 3 can perform reciprocating circulation of the slurry, and the mixed liquid in the circulating mixing device 9 and the mixed powder in the powder mixing device 2 are synchronously conveyed.

[0068] In this embodiment, the liquid and the powder are stirred and mixed independently to obtain a uniformly mixed mixed liquid and mixed powder, and then the powder-liquid mixing and conveying device 3 is used to simultaneously obtain the mixed powder in the powder mixing device 2 and the mixed liquid in the circulating mixing device 9, and the mixed powder and the mixed liquid are roughly mixed by using the dispersion component 36 arranged on the circular tank body 32, and the roughly mixed slurry is circulated and dispersed multiple times between the circulating mixing device 9 and the powder-liquid mixing and conveying device 3, and the solid-liquid slurry is semi-finely mixed, and finally the semi-finely mixed slurry is conveyed to the dispersion mixing device 4 for fine mixing. The present invention cleverly uses the same powder-liquid mixing and conveying device 3 to convey the powder and the liquid, and uses the fluidity of the liquid to carry the powder out, which, on the one hand, reduces the investment cost and ensures the completeness of the powder conveying, and on the other hand, the liquid and the powder are preliminarily roughly mixed in the powder-liquid mixing and conveying device 3, and the slurry is reciprocated and dispersed between the powder-liquid mixing and conveying device 3 and the circulating mixing device 9, thereby improving the dispersion quality and dispersion efficiency of the slurry.

[0069] As an implementation mode, the high-speed circulating dispersion pulping system of this embodiment further includes at least two raw liquid material tanks 5 connected to the circulating mixing device 9 pipeline. When in use, the raw liquid in the raw liquid material tank 5 first enters the circulating mixing device 9 for mixing, and the mixed liquid is transported to the powder-liquid matching conveying device 3 to be dispersed and mixed with the powder entering the powder-liquid matching conveying device 3 from the powder mixing device 2. In this embodiment, two raw liquid material tanks 5 are provided, namely, an NMP liquid material tank and a CNT liquid material tank.

[0070] like Figures 6 - 11 As shown, the dispersion component 36 in this embodiment includes a first driving mechanism 361 installed on the circular tank body 32, a dispersion shaft 362 that is transmission-arranged with the output end of the first driving mechanism 361, a dispersion chamber 363 arranged inside the circular tank body 32, a lower stator 364, a bidirectional stator 365, an upper stator 366, a primary rotor 367, a secondary rotor 368 and at least one dispersion impeller 369. The lower stator 364, the bidirectional stator 365 and the upper stator 366 are fixedly arranged on the inner wall of the dispersion chamber 363 from bottom to top, the primary rotor 367 and the secondary rotor 368 are sleeved on the dispersion shaft 362 and rotate with the dispersion shaft 362. The dispersion impeller 369 is fixedly arranged on the primary rotor 367 and / or the secondary rotor 368. In this embodiment, two dispersion impellers 369 are arranged, and the two dispersion impellers 369 are respectively arranged on the primary rotor 367 and the secondary rotor 368. In order to achieve a dispersion effect, the dispersion impeller 369 in this embodiment includes a plurality of arc blades distributed in a circular array.

[0071] As a preferred implementation, the first driving mechanism 361 in this embodiment uses a belt drive assembly to perform transmission with minimal noise.

[0072] It should be further noted that in this embodiment, the first-stage rotor 367 and the lower stator 364 and the lower part of the corresponding two-way stator 365 form a first-stage dispersion assembly for dispersing the slurry. The second-stage rotor 368 and the upper stator 366 and the upper part of the corresponding two-way stator 365 form a second-stage dispersion assembly for dispersing the slurry. Both the first-stage dispersion assembly and the second-stage dispersion assembly are located in the dispersion chamber 363 between the discharge port and the second input port 34.

[0073] Specifically, referring to Figures 7 - 11 , the lower stator 364 in this embodiment includes a lower stator disk 3641 fixedly installed on the inner wall of the dispersion chamber 363 and a first stator gear ring 3642 fixedly arranged on the upper end surface of the lower stator disk 3641. The two-way stator 365 includes a two-way stator disk 3651, a second stator gear ring 3652 installed on the lower end surface of the two-way stator disk 3651, and a third stator gear ring 3653 installed on the upper end surface of the two-way stator disk 3651. The upper stator 366 includes an upper stator disk 3661 fixedly installed on the inner wall of the dispersion chamber 363 and a fourth stator gear ring 3662 installed on the lower end surface of the upper stator disk 3661.

[0074] The first-stage rotor 367 includes a first-stage rotor disk 3671 sleeved on the dispersion shaft 362, a first upper rotor gear ring 3672 and a second upper rotor gear ring 3673 fixedly arranged on the upper end surface of the first-stage rotor disk 3671, and a first lower rotor gear ring 3674 fixedly arranged on the lower end surface of the first-stage rotor disk 3671. The first lower rotor gear ring 3674 cooperates with the first stator gear ring 3642 and is located outside the first stator gear ring 3642. The second stator gear ring 3652 is arranged in the interval gap between the first upper rotor gear ring 3672 and the second upper rotor gear ring 3673. When the dispersion shaft 362 rotates at a high speed, driving the first-stage rotor 367 to rotate, the first lower rotor gear ring 3674 cooperates with the first stator gear ring 3642, and the first upper rotor gear ring 3672 and the second upper rotor gear ring 3673 cooperate with the second stator gear ring 3652 at the same time to disperse the slurry.

[0075] The second-stage rotor 368 includes a second-stage rotor disk 3681 sleeved on the dispersion shaft 362, a third upper rotor gear ring 3682 and a fourth upper rotor gear ring 3683 fixedly arranged on the second-stage rotor disk 3681, and a second lower rotor gear ring 3684 fixedly arranged on the lower end surface of the second-stage rotor disk 3681. The fourth stator gear ring 3662 is arranged in the interval gap between the third upper rotor gear ring 3682 and the fourth upper rotor gear ring 3683. The second lower rotor gear ring 3684 cooperates with the third stator gear ring 3653 and is located outside the third stator gear ring 3653.

[0076] In this embodiment, the first stator gear ring 3642, the second stator gear ring 3652, the third stator gear ring 3653, the fourth stator gear ring 3662, the first upper rotor gear ring 3672, the second upper rotor gear ring 3673, the first lower rotor gear ring 3674, the third upper rotor gear ring 3682, the fourth upper rotor gear ring 3683 and the second lower rotor gear ring 3684 are all provided with a number of equally spaced circumferentially arrayed dispersing teeth. When the driving mechanism drives the dispersing shaft 362 to rotate at a high speed, the dispersing teeth on the cooperating stator and rotor will break up and disperse the slurry, and perform primary solid-liquid mixing on the mixed powder and the mixed liquid.

[0077] To enhance the dispersing efficiency, there are two dispersing blades in this embodiment. The two dispersing blades are respectively arranged on the first-stage rotor 367 and the second-stage rotor 368, inside the rotor gear ring, and rotate following the dispersing shaft 362. When the dispersing shaft 362 rotates, the dispersing blades push the slurry in the middle of the dispersing chamber 363 towards the surroundings. Under the combined action of the dispersing teeth on the rotor gear ring and the stator gear ring, the slurry is dispersed and mixed, thereby enhancing the dispersing quality and efficiency.

[0078] As Figure 5 shown, an unloading component 6 corresponding to the output port 35 is arranged inside the circular tank body 32 in this embodiment; the unloading component 6 includes an unloading chamber 61 arranged inside the circular tank body 32, an unloading blade 62 sleeved on the dispersing shaft 362, and an unloading stator 63 fixedly arranged on the inner wall of the unloading chamber 61. The output port 35 is communicated with the unloading chamber 61. In this embodiment, the unloading stator 63 is fixed on the lower surface at the top of the unloading chamber 61. The unloading stator 63 includes an unloading stator disk fixed on the unloading chamber 61 and a number of unloading teeth equally spaced in a circumferential array on the unloading stator disk.

[0079] In this embodiment, the dispersing component 36 performs primary and secondary dispersion on the slurry. Through two-stage dispersion, the mixing of the slurry can be achieved faster and better. The slurry is subjected to comprehensive actions such as strong mechanical and hydraulic shearing, centrifugal extrusion, liquid layer friction, impact tearing, etc. in the gap between the dispersing teeth of the stator and the rotor, and is instantly sheared and dispersed. After two-stage high-frequency reciprocation, the mixed product is obtained. Through two-stage dispersion, the dispersing efficiency can be effectively improved.

[0080] In this embodiment, as Figure 2 and Figure 8As shown, a powder delivery assembly 7 is provided on the pipeline between the powder mixing device 2 and the powder-liquid combined delivery device 3. The powder delivery assembly 7 includes a "⊥"-shaped delivery pipe 71 connected to the output end of the powder mixing device 2, a powder delivery motor 72 installed at one end of the "⊥"-shaped delivery pipe 71, and a propeller 73 coaxially arranged with the output shaft of the powder delivery motor 72. The end of the "⊥"-shaped delivery pipe 71 far from the powder delivery motor 72 is communicated with the first input port 33. In specific use, the upper tank opening of the "⊥"-shaped delivery pipe 71 is communicated with the discharge port of the powder mixing device 2, the left tank opening of the "⊥"-shaped delivery pipe 71 installs the powder delivery motor 72, the propeller 73 is arranged horizontally inside the pipe body of the "⊥"-shaped delivery pipe 71, and the right tank opening of the "⊥"-shaped delivery pipe 71 is communicated with the discharge chamber 61. The circulating mixing device 9 is communicated with the second input port 34 through the liquid slurry delivery assembly 8. The liquid slurry delivery assembly 8 includes a rotor pump and a condenser installed on the corresponding pipeline of the output port 35 of the circulating mixing device 9.

[0081] As Figure 3 As shown, the powder mixing device 2 in this embodiment includes a premixing tank body, a premixing motor installed at the top of the premixing tank body, a premixing stirring shaft coaxially connected to the output shaft of the premixing motor, and premixing stirring paddles installed on the premixing stirring shaft. The premixing stirring paddles include a first paddle and a second paddle. The first paddle and the second paddle are centrosymmetric about the center of the premixing stirring shaft. Both the first paddle and the second paddle are fixed on the premixing stirring shaft through a support frame.

[0082] The circulating mixing device 9 in this embodiment includes a circulating tank body, a first tank cover covering the top of the circulating tank body, a first circulating motor installed on the first tank cover, a first circulating dispersion shaft coaxially connected to the output shaft of the first circulating motor, and a first circulating paddle sleeved and installed at the end of the first circulating dispersion shaft.

[0083] The dispersion and mixing device 4 in this embodiment includes a dispersion tank, a second tank cover covering the top of the dispersion tank, a second circulation motor installed on the second tank cover, a second circulation dispersion shaft coaxially connected to the output shaft of the second circulation motor, a second circulation dispersion blade and a second dispersion rotor sleeved and installed at the end of the second circulation dispersion shaft, a second feed chamber fixed on the second tank cover, and a first dispersion stator and a second dispersion stator fixed on the second feed chamber. The second dispersion rotor includes a second rotor disc, a plurality of second upper dispersion teeth fixed equidistantly in a circumferential array on the upper surface of the second rotor disc, and a plurality of second lower dispersion teeth fixed equidistantly in a circumferential array on the lower surface of the second rotor disc. There are two layers of the second lower dispersion teeth; the first dispersion stator includes a first stator disc fixed on the inner wall of the second feed chamber and a plurality of first stator teeth fixed equidistantly in a circumferential array on the first stator disc. The first stator teeth are located between the second upper dispersion teeth and the second circulation dispersion blade; the second dispersion stator includes a second stator disc fixed at the bottom end of the second feed chamber and a plurality of second stator teeth fixed equidistantly on the upper surface of the second stator disc. The second stator teeth are located between the two layers of the second lower dispersion teeth.

[0084] In this embodiment, the powder mixing device 2 of the high-speed circulation dispersion pulping system is used to initially mix each powder material, and the circulation mixing device 9 is used to initially mix each liquid material. After the liquid materials are initially mixed well, the initially mixed powder materials and liquid materials are combined by the powder-liquid matching conveying device 3 to converge the powder materials and liquid materials for solid-liquid rough mixing, and then conveyed to the circulation mixing device 9 for mixing. The slurry can continue to circulate between the circulation mixing device 9 and the powder-liquid matching conveying device 3 to reduce viscosity, and then transferred to the dispersion and mixing device 4 for cyclic fine dispersion. Of course, the slurry in the circulation mixing device 9 can also be directly transferred to the dispersion and mixing device 4 for dispersion and mixing without circulating between the circulation mixing device 9 and the powder-liquid matching conveying device 3. After the dispersion and mixing is completed, the materials are discharged from the dispersion and mixing device 4 into the finished product tank. After the slurry is transferred to the dispersion and mixing device 4, the next batch of materials can be mixed in the powder mixing device 2 and the circulation mixing device 9, which can effectively save time and increase production.

[0085] As Figure 12 shown, based on the above pulping method of the high-speed circulation dispersion pulping system, it includes the following contents:

[0086] Step 1: Add the powders to be mixed into the powder mixing device 2, and at the same time add the liquids to be mixed into the circulation mixing device 9;

[0087] Step 2: Start the powder mixing device 2 and the circulation mixing device 9 to stir and mix the corresponding materials;

[0088] Step 3: Start the powder-liquid combined conveying device 3 to roughly mix and convey the powder in the powder mixing device 2 and the liquid in the circulating mixing device 9, and convey them to the circulating mixing device 9;

[0089] Step 4: Start the circulating mixing device 9 to mix and stir the input slurry; and circulate and mix the slurry between the circulating mixing device 9 and the powder-liquid combined conveying device 3. By reciprocally circulating and mixing the slurry through the circulating mixing device 9 and the powder-liquid combined conveying device 3, the mixing effect and quality can be effectively improved.

[0090] Step 5: After mixing is completed, convey it to the dispersion mixing device 4;

[0091] Step 6: Start the dispersion mixing device 4 to finely mix the input slurry; the slurry passing through the powder-liquid combined conveying device 3, the circulating mixing device 9, and then through the dispersion mixing device 4 can further improve the mixing efficiency and quality. When transferring the slurry into the dispersion mixing device 4, the mixing of the next batch of materials can be carried out in the powder mixing device 2 and the circulating mixing device 9, which can effectively save time, improve efficiency and output.

[0092] Step 7: After fine mixing is completed, convey the slurry to the finished product tank. The discharge port of the dispersion mixing device 4 is connected to the finished product tank, and the slurry is output to the finished product tank for storage after being mixed well in the dispersion mixing device 4.

[0093] As an implementation manner, the output port 35 of the powder-liquid combined conveying device 3 in this embodiment is connected to the feed port pipeline of the dispersion mixing device 4, and the powder-liquid combined conveying device 3 can also directly convey the roughly mixed slurry into the dispersion mixing device 4 for fine mixing.

[0094] In the present invention, the powder and liquid materials are pre-mixed separately, and then the pre-mixed powder and liquid are converged and roughly mixed through the powder-liquid combined conveying device 3. Then, the circulating solid-liquid mixing is carried out between the circulating mixing device 9 and the powder-liquid combined conveying device 3. Next, the slurry is transferred to the dispersion mixing device 4 to continue the fine dispersion of the slurry. After the slurry is dispersed well, it is discharged from the dispersion mixing device 4 to the finished product tank for defoaming, which has the characteristics of good mixing effect and high efficiency.

[0095] It should be understood that the specific embodiments described above are only used to explain the present invention and are not used to limit the present invention. The obvious changes or variations derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A high-speed circulating dispersion pulping system, characterized in that, include: frame; A powder mixing device installed on the frame, used for stirring and mixing the powder; A circulating mixing device, used for stirring and mixing the liquid; A powder-liquid mixing and conveying device is arranged below the powder mixing device; A dispersing and mixing device, connected to the pipeline of the circulating mixing device, for dispersing and mixing the slurry mixed in the circulating mixing device; A finished product tank, connected to the pipeline of the dispersing and mixing device, and used for storing or transferring the slurry mixed by the dispersing and mixing device; The powder-liquid mixing conveying device comprises a mounting frame, a circular tank body mounted on the mounting frame, a first input port, a second input port and an output port arranged on the circular tank body, and a dispersing component arranged in the circular tank body between the output port and the second input port; the first input port and the output port are located at the same height, and the second input port is located below the output port; The discharge port of the powder mixing device is connected to the first feed port pipeline, and the discharge port of the circulating mixing device is connected to the second input port pipeline; the feed port of the circulating mixing device is connected to the discharge port; the circulating mixing device and the powder-liquid conveying device perform reciprocating circulation of the slurry.

2. The high-speed circulating dispersion pulping system according to claim 1, wherein The dispersed components include: A first driving mechanism installed on the circular tank; A dispersion shaft, arranged for transmission with the output end of the first driving mechanism; A dispersion chamber is arranged inside the circular tank body; A lower stator, a bidirectional stator and an upper stator are fixedly arranged on the inner wall of the dispersion chamber from bottom to top in sequence; The primary rotor and the secondary rotor are sleeved on the dispersion shaft and rotate along with the dispersion shaft; At least one dispersion impeller, fixedly arranged on the primary rotor and / or the secondary rotor; The primary rotor, the lower stator and the corresponding lower part of the bidirectional stator form a primary dispersing assembly for dispersing the slurry; the secondary rotor, the upper stator and the corresponding upper part of the bidirectional stator form a secondary dispersing assembly for dispersing the slurry.

3. The high-speed cyclic dispersion pulping system according to claim 2, wherein: The lower stator comprises a lower stator plate fixedly mounted on the inner wall of the dispersion chamber, and a first stator gear ring fixedly arranged on the upper end surface of the lower stator plate; The bidirectional stator comprises a bidirectional stator disc, a second stator gear ring and a third stator gear ring symmetrically mounted on the lower upper end surface of the bidirectional stator disc; The upper stator comprises an upper stator plate fixedly mounted on the inner wall of the dispersion chamber and a fourth stator gear ring mounted on the lower end surface of the upper stator plate.

4. The high-speed circulating dispersion pulping system according to claim 3, wherein: The primary rotor comprises a primary rotor disk sleeved on the dispersion shaft, a first upper rotor gear ring and a second upper rotor gear ring fixedly arranged on the upper end surface of the primary rotor disk, and a first lower rotor gear ring fixedly arranged on the lower end surface of the primary rotor disk; The first lower rotor gear ring cooperates with the first stator gear ring and is located outside the first stator gear ring; The second stator gear ring is disposed in a spacing gap between the first upper rotor gear ring and the second upper rotor gear ring.

5. A high-speed circulating dispersion pulping system according to claim 3, characterized in that: The secondary rotor comprises a secondary rotor disk sleeved on the dispersion shaft, a third upper rotor gear ring and a fourth upper rotor gear ring fixedly arranged on the upper end surface of the secondary rotor disk, and a second lower rotor gear ring fixedly arranged on the lower end surface of the secondary rotor disk; The third stator gear ring is arranged in the interval gap between the third upper rotor gear ring and the fourth upper rotor gear ring; The second lower rotor gear ring cooperates with the third stator gear ring and is located outside the third stator gear ring.

6. The high-speed circulating dispersion pulping system according to claim 5, characterized in that: The dispersion blades include two, and the two dispersion blades are respectively arranged on the primary rotor and the secondary rotor and rotate following the dispersion shaft.

7. A high-speed circulating dispersion pulping system according to claim 3, characterized in that: An unloading component corresponding to the output port is arranged inside the circular tank body; the unloading component includes an unloading cavity arranged inside the circular tank body, an unloading paddle sleeved on the dispersion shaft, and an unloading stator fixedly arranged on the inner wall of the unloading cavity; The output port is communicated with the unloading cavity.

8. A high-speed circulating dispersion pulping system according to claim 1, characterized in that: A powder delivery component is arranged on the pipeline between the powder mixing device and the powder-liquid combined conveying device. The powder delivery component includes a "⊥"-shaped delivery pipe connected to the output end of the powder mixing device, a powder delivery motor installed at one end of the "⊥"-shaped delivery pipe, and a propeller coaxially arranged with the output shaft of the powder delivery motor; One end of the "⊥"-shaped delivery pipe far from the powder delivery motor is communicated with the first input port.

9. A high-speed circulating dispersion pulping system according to claim 1, characterized in that: The circulation mixing device is communicated with the second input port through a liquid slurry delivery component. The liquid slurry delivery component includes a rotor pump and a condenser installed on the pipeline corresponding to the output port of the circulation mixing device.

10. A pulping method of a high-speed circulating dispersion pulping system according to any one of claims 1-9, characterized in that, It includes the following contents: Step 1: Add the powder to be mixed into the powder mixing device, and at the same time add the liquid to be mixed into the circulation mixing device; Step 2: Start the powder mixing device and the circulation mixing device to stir and mix the corresponding materials; Step 3: Start the powder-liquid combined conveying device to conduct rough mixing and conveying of the powder in the powder mixing device and the liquid in the circulation mixing device, and convey them into the circulation mixing device; Step 4: Start the circulation mixing device to mix and stir the input slurry; And conduct circulation mixing of the slurry between the circulation mixing device and the powder-liquid combined conveying device; Step 5: After mixing is completed, convey it into the dispersion mixing device; Step 6: Start the dispersion mixing device to conduct fine mixing of the input slurry; Step 7: After fine mixing is completed, convey the slurry into the finished product tank.

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