A shearing dispersion device and a continuous pulping equipment

Abstract

This invention discloses a shearing and dispersing device and a continuous pulping equipment. The shearing and dispersing device includes a cylinder, a stator unit, and a rotor unit. The stator unit and the rotor unit are alternately installed in the cylinder. The rotor unit is fixedly sleeved on the shaft core. The stator unit has multiple first through holes along its own axial direction, and the rotor unit has multiple second through holes along its own axial direction. When the driving component drives the shaft core to rotate, it drives the rotor unit to rotate, so that the multiple first through holes and multiple second through holes are interleaved. When the rotor unit rotates relative to the stator unit, a large shearing force is formed at the connection between the first through holes and the second through holes. As the pulp flows from the first through holes to the second through holes, it is sheared and dispersed to improve the dispersion of the pulp. The multiple stator units and multiple rotor units are alternately arranged, and the shaft core drives the rotor unit to rotate, which shears the pulp and promotes the flow of the pulp at the same time, so as to achieve the purpose of rapid and continuous pulping and improve pulping efficiency.

Description

Technical Field

[0001] This invention relates to the field of slurry dispersion equipment technology, specifically to a shear dispersion device and a continuous slurry preparation equipment. Background Technology

[0002] Existing twin-screw extruders connect all functional components to two parallel screws, including powder conveying, powder mixing, kneading, dilution, and dispersion. However, the speed requirements for dispersion are not consistent with those of the other functions, and the differences are significant, so the dispersion effect cannot meet the usage requirements.

[0003] The current market solution to the problem of insufficient dispersion capacity of twin-screw extruders is to add a buffer tank at the rear end of the twin-screw extruder and use the high-speed and low-speed stirring shafts of the buffer tank to disperse the slurry. However, this solution sacrifices the natural advantage of continuous production of twin-screw extruders. Twin-screw extruders are inherently continuous production lines, which frees up production capacity, but the buffer tank at the rear can only mix batches before outputting to the downstream process, making it impossible to achieve continuous pulping operations and reducing production capacity. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art, such as the inability to achieve continuous pulping operation, small pulping capacity, and low efficiency, thereby providing a shearing dispersion device and a continuous pulping equipment.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A shearing and dispersing device includes: a cylinder, stator units, and rotor units; the cylinder is connected to the discharge end of a screw extruder, and a shaft driven to rotate within the cylinder by a driving component; multiple stator units are sleeved on the shaft and fixedly connected to the cylinder, each stator unit having a first through hole extending through it along its axial direction; multiple rotor units are fixedly sleeved on the shaft, with the multiple stator units alternately arranged along the axial direction of the shaft, each rotor unit having a second through hole extending through it along its axial direction; the rotor units rotate with the shaft, such that the multiple first through holes and multiple second through holes are interleaved to form a first channel for shearing and dispersing the slurry.

[0007] According to some embodiments of the present invention, the stator unit includes an outer stator ring, an inner stator ring, and a plurality of stator ribs extending radially from the outer stator ring to the inner stator ring; the outer stator ring is fixedly connected to the inner wall of the cylinder, the plurality of stator ribs are evenly distributed along the circumference of the outer stator ring, and the first through hole is formed by at least two adjacent stator ribs, the outer stator ring, and the inner stator ring;

[0008] The rotor unit includes an inner rotor ring, an outer rotor ring, and multiple rotor ribs extending radially from the inner rotor ring to the outer rotor ring. The inner rotor ring is fixedly sleeved on the shaft core, and the multiple rotor ribs are evenly distributed along the circumference of the inner rotor ring. The second through hole is formed by at least two adjacent rotor ribs, the inner rotor ring, and the outer rotor ring.

[0009] According to some embodiments of the present invention, the stator unit and the rotor unit are arranged opposite to each other, and in the axial direction of the mandrel, the thickness of the stator outer ring is greater than the thickness of the stator inner ring and the stator ribs, and the thickness of the rotor inner ring is greater than the thickness of the rotor outer ring and the rotor ribs;

[0010] A first axial channel is formed between the inner wall of the stator outer ring and the outer wall of the rotor outer ring, and a second axial channel is formed between the outer wall of the rotor inner ring and the inner wall of the stator inner ring. The flow direction of the first axial channel and the second axial channel is consistent with the axial direction of the shaft core.

[0011] A radial channel is formed between the sidewall of the rotor rib and the sidewall of the adjacent stator rib, and the flow direction of the radial channel is perpendicular to the axial direction of the shaft core.

[0012] The first axial channel, the radial channel, and the second axial channel are sequentially connected to form a second channel for shearing and dispersing the material; the second axial channel is connected to the two radial channels on both sides of the corresponding stator rib so that multiple second channels are sequentially connected.

[0013] According to some embodiments of the present invention, the width of the radial channel is adjustable, and its width adjustment range is 1-4 mm.

[0014] According to some embodiments of the present invention, an adjusting washer is also included, wherein at least one side of the inner ring of the rotor is provided with a receiving groove, the adjusting washer is sleeved on the shaft core and located in the receiving groove, and the adjusting washer is adapted to adjust the width of the radial channel.

[0015] According to some embodiments of the present invention, a fixing member is further included, the fixing member comprising a gasket sleeved on the shaft and abutting against the inner ring of the rotor located at the front port of the cylinder, and a fastener connected to the shaft to be adapted to fix the gasket on the inner ring of the rotor.

[0016] According to some embodiments of the present invention, the inner ring of the rotor is provided with a limiting groove on the side facing the front end of the cylinder, and the gasket abuts against the bottom of the limiting groove.

[0017] According to some embodiments of the present invention, the cylinder is provided with a first positioning key, and the outer wall of the stator outer ring is provided with a first positioning groove that can cooperate with the positioning key; the shaft is provided with at least one second positioning key, and the inner wall of the rotor inner ring is provided with a second positioning groove that cooperates with the second positioning key.

[0018] According to some embodiments of the present invention, the cylinder wall is provided with a medium heat exchange channel, the medium heat exchange channel having a medium inlet and a medium outlet.

[0019] The present invention proposes a continuous pulping equipment, characterized in that it includes a screw extrusion device and the above-mentioned shearing and dispersing device, wherein the screw extrusion device includes an extrusion cylinder and a screw extrusion element disposed within the extrusion cylinder, and the cylinder is connected to the discharge end of the extrusion cylinder.

[0020] The technical solution of this invention has the following advantages:

[0021] 1. The shearing and dispersing device provided by the present invention comprises stator units and rotor units alternately installed in a cylinder. The rotor unit is fixedly sleeved on a shaft core. The stator unit has multiple first through holes along its own axial direction, and the rotor unit has multiple second through holes along its own axial direction. When the driving component drives the shaft core to rotate, it drives the rotor unit to rotate, so that the multiple first through holes and multiple second through holes are interconnected. The rotor unit rotates relative to the stator unit, and a large shearing force is formed at the connection between the first through holes and the second through holes. During the process of the slurry flowing from the first through hole to the second through hole, it is sheared and dispersed to improve the dispersion of the slurry. The multiple stator units and multiple rotor units are alternately arranged, and the shaft core drives the rotor unit to rotate, so that the first channel formed by the first through holes and the second through holes always remains in a connected state. While shearing the slurry, it promotes the flow of the slurry, thereby achieving the purpose of rapid and continuous pulping and improving pulping efficiency.

[0022] 2. The shearing and dispersing device provided by the present invention adjusts the radial channel between the rotor unit and the stator unit by adjusting the gasket according to the characteristics of the slurry, thereby improving the versatility of the shearing and dispersing device.

[0023] 3. The continuous pulping equipment proposed in this invention achieves continuous pulping by connecting with a shearing and dispersing device, thereby improving pulping efficiency and increasing pulping output. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 An exploded view of a shearing and dispersing apparatus provided in some embodiments of the present invention;

[0026] Figure 2 This is a half-sectional view of a shearing and dispersing device provided in some embodiments of the present invention;

[0027] Figure 3 for Figure 2 A partial view at point A in the middle;

[0028] Figure 4 This is a half-sectional view of the shearing and dispersing device provided in some embodiments of the present invention from another angle.

[0029] Figure 5 for Figure 4 A partial view at point B in the middle;

[0030] Figure 6 This is a stator unit structure view of a shearing and dispersing device provided in some embodiments of the present invention;

[0031] Figure 7 This is an assembly view of the rotor unit and shaft core of a shearing and dispersing device provided in some embodiments of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1. Cylinder; 2. Stator unit; 3. Rotor unit; 4. Shaft core; 5. Fixing component; 6. First axial channel; 7. Radial channel; 8. Second axial channel; 11. First locating key; 21. Stator outer ring; 211. First locating groove; 22. Stator rib; 221. First through hole; 23. Stator inner ring; 31. Rotor inner ring; 311. Second locating groove; 32. Rotor rib; 321. Second through hole; 33. Rotor outer ring; 41. Second locating key; 51. Shim; 52. Fastener. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Reference Figures 1 to 7 As shown, the present invention proposes a shearing and dispersing device, comprising: a cylinder 1, a stator unit 2, and a rotor unit 3; the cylinder 1 is connected to the discharge end of a screw extrusion device, and a shaft core 4 driven to rotate by a driving component is provided inside the cylinder 1; there are multiple stator units 2, each stator unit 2 is sleeved on the shaft core 4, the stator unit 2 is fixedly connected to the cylinder 1, and each stator unit 2 has a first through hole 221 penetrating the stator unit 2 along its own axial direction; there are multiple rotor units 3, each rotor unit 3 is fixedly sleeved on the shaft core 4, and the multiple stator units 2 are alternately arranged along the axial direction of the shaft core 4, each rotor unit 3 has a second through hole 321 penetrating the rotor unit 3 along its own axial direction; the rotor unit 3 rotates with the shaft core 4, so that the multiple first through holes 221 and the multiple second through holes 321 are interleaved to form a first channel for shearing and dispersing the slurry.

[0038] Specifically, stator unit 2 and rotor unit 3 are alternately installed inside cylinder 1. Rotor unit 3 is fixedly sleeved on shaft core 4. Stator unit 2 has multiple first through holes 221 along its own axial direction, and rotor unit 3 has multiple second through holes 321 along its own axial direction. When the driving component drives shaft core 4 to rotate, it drives rotor unit 3 to rotate, so that the multiple first through holes 221 and multiple second through holes 321 are interleaved and interconnected. When rotor unit 3 rotates relative to stator unit 2, a large shearing force is formed at the connection between first through holes 221 and second through holes 321. During the process of slurry flowing from first through hole 221 to second through hole 321, it is sheared and dispersed to improve the dispersion of slurry. Multiple stator units 2 and multiple rotor units 3 are alternately arranged, and shaft core 4 drives rotor unit 3 to rotate, so that the first channel formed by first through holes 221 and second through holes 321 always remains in a connected state. While shearing the slurry, it also promotes the flow of slurry, achieving the purpose of rapid and continuous pulping and improving pulping efficiency.

[0039] Reference Figure 4 and Figure 5 As shown, it can be understood that when the number of first through holes 221 is the same as the number of second through holes 321, during the rotation of rotor unit 3, the projections of the first through holes 221 and the second through holes 321 overlap to facilitate the flow of slurry. When the number of first through holes 221 is not equal to the number of second through holes 321, during the rotation of rotor unit 3, at least one projection of the first through hole 221 overlaps with the projection of one projection of the second through hole 321. The specific number of first through holes 221 and second through holes 321 is not a limitation of this invention.

[0040] Specifically, to ensure that the slurry with a high solids content can be fully sheared and dispersed, the first through hole 221 and the second through hole 321 are configured as a fan shape. During the rotation of the rotor unit 3, the radius of the first through hole 221 or the second through hole 321 with a fan-shaped cross-section shears the slurry, which helps to improve the shearing efficiency of the slurry. The cross-sectional shape of the first through hole 221 and the second through hole 321 is not a limitation of the present invention, and can also be configured as square or triangular.

[0041] Reference Figure 3 and Figure 5 As shown, in some embodiments of the present invention, the stator unit 2 includes a stator outer ring 21, a stator inner ring 23, and a plurality of stator ribs 22 extending radially from the stator outer ring 21 to the stator inner ring 23. The stator outer ring 21 is fixedly connected to the inner wall of the cylinder 1. The plurality of stator ribs 22 are evenly distributed along the circumference of the stator outer ring 21. The first through hole 221 is formed by at least two adjacent stator ribs 22, the stator outer ring 21, and the stator inner ring 23. In the axial direction of the mandrel 4, the stator inner ring 23 and the stator ribs 22 have the same thickness and are both less than the thickness of the stator outer ring 21.

[0042] Reference Figure 6 As shown in the figure, specifically, the cylinder 1 is provided with at least one first positioning key 11, and the outer peripheral wall of the stator outer ring 21 is provided with a first positioning groove 211 that cooperates with the first positioning key 11; the number of the first positioning groove 211 and the second positioning groove 311 can be multiple, and the specific number of the first positioning groove 211 and the second positioning groove 311 is not a limitation of the present invention.

[0043] The stator unit 2 is fixed to the cylinder 1 via a keyway connection. Specifically, the cylinder 1 is provided with at least one first positioning key 11, and the rotor outer ring 33 is provided with at least two first positioning grooves 211 that can cooperate with the first positioning key 11. The first positioning key 11 can cooperate with any one of the first positioning grooves 211, which can improve the adaptability of the stator unit 2 installation and reduce the installation difficulty. The first through holes 221 on each stator unit 2 can be located on the same axis or staggered by adjusting the installation position between the first positioning key 11 and the two first positioning grooves 211, thereby changing the dispersion performance of the shearing and dispersing device.

[0044] The rotor unit 3 includes an inner rotor ring 31, an outer rotor ring 33, and multiple rotor ribs 32 extending radially from the inner rotor ring 31 to the outer rotor ring 33. The inner rotor ring 31 is fixedly sleeved on the spindle 4. The multiple rotor ribs 32 are evenly distributed circumferentially along the inner rotor ring 31. The second through hole 321 is formed by at least two adjacent rotor ribs 32, the inner rotor ring 31, and the outer rotor ring 33. In the axial direction of the spindle 4, the outer rotor ring 33 and the rotor ribs 32 have the same thickness and are both less than the thickness of the inner rotor ring 31.

[0045] Reference Figure 7 As shown, the rotor unit 3 is also fixed to the shaft core 4 by a keyway connection. Specifically, the shaft core 4 is provided with at least one second positioning key 41, and the inner wall of the rotor inner ring 31 is provided with a second positioning groove 311 that mates with the second positioning key 41. Fixing the stator unit 2 to the cylinder 1 and the rotor unit 3 to the shaft core 4 by keyway connection facilitates the disassembly and disassembly of the stator unit 2 and the rotor unit 3, shortens the assembly time, and improves the assembly efficiency.

[0046] Specifically, multiple rotor units 3 are sequentially mounted on the shaft core 4 in the same direction. Rotor ribs 32 and stator ribs 22 interlock sequentially, with the stator ribs 22 extending between two adjacent rotor ribs 32 and vice versa. During rotor unit 3 rotation, the rotor ribs 32 rotate relative to the stator ribs 22, creating a significant shearing force between them. When the slurry has a high solids content, as it flows at a high velocity through the first through-hole 221 and the second through-hole 321, the stator ribs 22 and rotor ribs 32 shear and disperse the slurry, reducing its viscosity. In this invention, the arrangement of the first through-hole 221, the second through-hole 321, the stator ribs 22, and the rotor ribs 32 helps improve the dispersion of slurries with high solids content and reduces their viscosity.

[0047] Reference Figures 2 to 5 As shown, in some embodiments of the present invention, the stator unit 2 and the rotor unit 3 are arranged opposite to each other. The rotor ribs 32 and the stator ribs 22 are arranged sequentially at intervals along the axial direction of the spindle 4. The thickened portion of the rotor inner ring 31 corresponds to the stator inner ring 23, and the thickened portion of the stator outer ring 21 corresponds to the rotor outer ring 33. A first axial channel 6 is formed between the inner wall of the stator outer ring 21 and the outer wall of the rotor outer ring 33, and a second axial channel 8 is formed between the outer wall of the rotor inner ring 31 and the inner wall of the stator inner ring 23. The flow direction of the first axial channel 6 and the second axial channel 8 is consistent with the axial direction of the spindle 4. A radial channel 7 is formed between the opposite side walls of the rotor ribs 32 and the side walls of the stator ribs 22. The flow direction of the radial channel 7 is perpendicular to the axial direction of the spindle 4. The first axial channel 6, the radial channel 7, and the second axial channel 8 are sequentially connected to form a second channel for shearing and dispersing the material. The second axial channel 8 connects the two radial channels 7 on opposite sides of the stator ribs 22.

[0048] Specifically, after the slurry is extruded by the screw extruder, part of the slurry enters the first axial channel 6 between the outer peripheral wall of the rotor outer ring 33 and the inner wall of the stator outer ring 21 from the front port of the cylinder 1. The shaft core 4 drives the rotor unit 3 to rotate, and the slurry is sheared and dispersed in the first axial channel 6, flowing backward along the axis of the shaft core 4. The rotor ribs 32 block the slurry, causing it to flow radially. After entering the radial channel 7, part of the slurry flows into the first channel, and part flows radially. After being sheared and dispersed in the radial channel 7, it flows backward in a square shape along the axis of the shaft core 4, entering the second axial channel 8 between the outer wall of the rotor inner ring 31 and the outer wall of the stator outer ring 21. The second channel, which is formed by connecting the first axial channel 6, the radial channel 7, and the second axial channel 8, is zigzag-shaped, which extends the flow distance of the slurry and increases the dispersion area, thereby improving the dispersion degree of the slurry and increasing the dispersion efficiency.

[0049] It is understandable that the stator ribs 22 and rotor ribs 32 have the same extension length. The longer the extension length of the stator ribs 22 and rotor ribs 32, the stronger the shear force within the radial channel 7 between the rotor ribs 32 and stator ribs 22 during the rotation of the rotor unit 3 with the shaft core 4, and the greater the resistance experienced by the rotor unit 3. The stronger the shear force, the higher the dispersion of the slurry; the greater the resistance, the lower the rotational speed of the rotor unit 3, and the lower the dispersion of the slurry. In some embodiments of the present invention, the linear velocity of the rotor unit 3 is controlled above 20 m / s to ensure that a large shear force is generated, allowing the slurry to be fully dispersed.

[0050] The linear speed of rotor unit 3 is adjustable. In practical applications, the rotation speed of rotor unit 3 can be adjusted according to the composition, viscosity and other characteristics of the slurry to match the requirements of different slurries for shear dispersion efficiency. The rotation speed of rotor unit 3 can be adjusted by changing the rotation speed of the drive component through a PLC controller. The rotation speed adjustment method of rotor unit 3 is not a limitation of this invention.

[0051] In some embodiments of the present invention, the width of the radial channel 7 is adjustable, and its width adjustment range is 1-4 mm.

[0052] In some embodiments of the present invention, an adjusting washer is also included. At least one side of the inner ring 31 of the rotor is provided with a receiving groove. The adjusting washer is sleeved on the shaft core 4 and located in the receiving groove. The adjusting washer is adapted to adjust the width of the radial channel 7.

[0053] Specifically, by providing a receiving groove on at least one side of the rotor, and installing adjusting shims within the receiving groove, the width of the radial channel 7 can be adjusted by changing the thickness of the adjusting shims. In some embodiments of the present invention, multiple adjusting shims can be optionally placed for adjustment, with the total thickness of the multiple adjusting shims being 1.2mm-4.2mm. When the groove depth is equal to 0.2mm, the width adjustment range of the radial channel 7 is 1mm-4mm. The groove depth and the thickness of the adjusting shims are not limitations of the present invention, therefore the width adjustment range of the radial channel 7 is also not a limitation of the present invention.

[0054] It is understood that a receiving groove can be provided on one side of the inner ring 31 of the rotor, or a receiving groove can be provided on both sides of the inner ring 31 of the rotor. The number of receiving grooves is not a limitation of the present invention.

[0055] In some embodiments of the present invention, a fixing member 5 is also included, which includes a gasket 51 sleeved on the shaft core 4 and abutting against the rotor inner ring 31 located at the front port of the cylinder 1, and a fastener 52 connected to the shaft core 4 to be adapted to fix the gasket 51 on the rotor inner ring 31.

[0056] In some embodiments of the present invention, the inner ring 31 of the rotor is provided with a limiting groove on the side facing the front end of the cylinder 1, and the gasket 51 abuts against the bottom of the limiting groove.

[0057] Specifically, the rotor unit 3 near the front end of the cylinder 1 is fixedly connected to the shaft core 4 via a fixing member 5. The inner rings 31 of the multiple axially distributed rotor units 3 abut against and press against each other to ensure that the rotor unit 3 does not wobble during rotation. The fixing member 5 is specifically a gasket 51 sleeved on the shaft core 4 and abutting against the rotor unit 3 located at the front end of the cylinder 1. The gasket 51 is placed within the limiting groove of the rotor unit 3 and is fixed to the rotor unit 3 by fasteners 52 connected to the shaft core 4. The fasteners 52 are specifically bolts. The gasket 51 is designed to prevent wear between the fasteners 52 and the rotor unit 3 during the rotation of the shaft core 4. By acting as a buffer, the gasket 51 prevents wear on the rotor unit 3 and reduces maintenance costs.

[0058] It is understood that, depending on the characteristics of the slurry being introduced, different numbers of stator units 2 and rotor units 3 can be selected for assembly. Specifically, when there are n stator units 2, the number of rotor units 3 is n+2, to ensure that the rotor units 3 are located at both ends of the shaft core 4, facilitating the fixing of the rotor units 3. In some embodiments of the present invention, there are 9 stator units 2 and 11 rotor units 3. The specific number of stator units 2 and rotor units 3 is not a limitation of the present invention.

[0059] It is understood that the limiting groove is set on the side of the inner ring 31 facing the front end of the cylinder 1, the bottom of the limiting groove abuts against the gasket 51, and the depth of the limiting groove is the same as the thickness of the gasket 51. The gasket 51 can be made of materials such as metal, and the specific material of the gasket 51 is not a limitation of the present invention.

[0060] When a receiving groove is provided on only one side of the inner ring 31 of the rotor, a limiting groove is provided on the side of the inner ring 31 of the rotor unit 3 located at the front end of the cylinder 1 near the front port, and a receiving groove is provided on the other side away from the front port; when receiving grooves are provided on both sides of the inner ring 31 of the rotor, the limiting groove of the inner ring 31 of the rotor unit 3 located at the front end of the cylinder 1 coincides with the receiving groove.

[0061] In some embodiments of the present invention, a medium heat exchange channel is provided on the cylinder wall of the cylinder body 1, and the medium heat exchange channel has a medium inlet and a medium outlet.

[0062] Specifically, the medium heat exchange channel is spirally arranged around the circumferential wall of the cylinder 1. Specifically, the medium heat exchange channel is a cold medium channel; the cold medium enters from the medium inlet, passes through the cold medium channel, and flows out from the medium outlet. The cold medium can carry away some of the heat from the cylinder 1, thereby cooling the slurry inside the cylinder 1. Alternatively, the medium heat exchange channel is a hot medium channel; the hot medium enters from the medium inlet, passes through the hot medium channel, and flows out from the medium outlet. The hot medium can heat the slurry inside the cylinder 1.

[0063] This shearing and dispersing device has, on the one hand, multiple first through holes 221 on the stator unit 2 and multiple second through holes 321 on the rotor unit 3, forming a first channel; on the other hand, a second channel is formed between the stator unit 2 and the rotor unit 3, consisting of a first axial channel 6, a radial channel 7, and a second axial channel 8. When shearing a high-solids slurry, the mandrel 4 drives the rotor unit 3 to rotate. After the rotor ribs 32 on the rotor unit 3 shear the slurry, the dispersed slurry passes through the rotor unit 3 through different second through holes 321. The slurry that has passed through contacts the next stator unit 2. After the high-speed rotating slurry collides with the stationary stator unit 2, the stator ribs 22 shear and disperse the slurry again, and then the slurry passes through the second through holes 321. The slurry passes through the first through hole 221 of the stator unit 2 and contacts the second rotor unit 3. The subsequent dispersion process is the same as before. That is, the slurry enters from the inlet of the device and flows out from the outlet of the device. It is dispersed into different channels. These channels themselves rotate at high speed. During the rotation, the slurry channels will be disconnected and connected back and forth. Due to the high speed of the motor and the fast channel switching frequency, the slurry will be dispersed at high speed. After the high solid content slurry is sheared and dispersed, the viscosity decreases. The slurry with reduced viscosity will flow into the narrow, zigzag second channel under the action of centrifugal force for further shearing and dispersion, and finally obtain the finished slurry. This can greatly improve the rate of shearing and dispersing of slurry in the device and realize the continuous production of slurry.

[0064] The present invention proposes a continuous pulping equipment, characterized in that it includes a screw extrusion device and the above-mentioned shearing and dispersing device. The screw extrusion device includes an extrusion cylinder 1 and a screw extrusion element disposed in the extrusion cylinder 1. The cylinder 1 is connected to the discharge end of the extrusion cylinder 1.

[0065] Specifically, the continuous pulping equipment proposed in this invention achieves continuous pulping by connecting with a shearing and dispersing device, thereby improving pulping efficiency and increasing pulping output.

[0066] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A shearing and dispersing device, characterized in that, include: A cylinder (1) is connected to the discharge end of a screw extrusion device, and a shaft (4) driven to rotate by a drive component is provided inside the cylinder (1). A stator unit (2), in multiple quantities, is sleeved on the shaft core (4). The stator unit (2) is fixedly connected to the cylinder (1). The stator unit (2) has a first through hole (221) that penetrates the stator unit (2) along its own axial direction. The stator unit (2) includes a stator outer ring (21), a stator inner ring (23), and multiple stator ribs (22) that extend radially from the stator outer ring (21) to the stator inner ring (23). The stator outer ring (21) is fixedly connected to the inner wall of the cylinder (1). The multiple stator ribs (22) are evenly distributed along the circumference of the stator outer ring (21). The first through hole (221) is formed by at least two adjacent stator ribs (22), the stator outer ring (21), and the stator inner ring (23). The rotor unit (3) is a plurality of units, which are fixedly sleeved on the shaft core (4). The plurality of stator units (2) are alternately arranged along the axial direction of the shaft core (4). The rotor unit (3) is provided with a second through hole (321) that penetrates the rotor unit (3) along its own axial direction. The rotor unit (3) includes an inner rotor ring (31), an outer rotor ring (33), and a plurality of rotor ribs (32) that extend radially from the inner rotor ring (31) to the outer rotor ring (33). The inner rotor ring (31) is fixedly sleeved on the shaft core (4). The plurality of rotor ribs (32) are evenly arranged along the circumference of the inner rotor ring (31). The second through hole (321) is formed by at least two adjacent rotor ribs (32), the inner rotor ring (31), and the outer rotor ring (33). The cross-sections of the first through hole (221) and the second through hole (321) are fan-shaped, and the stator ribs (22) and the rotor ribs (32) are interwoven with each other in sequence; The rotor unit (3) rotates with the shaft core (4) so ​​that the plurality of first through holes (221) and the plurality of second through holes (321) are intersected to form a first channel for shearing and dispersing the slurry; During the rotation of the rotor unit (3), at least one first through hole (221) and one second through hole (321) have their projections coincide. A first axial channel (6) is formed between the inner wall of the stator outer ring (21) and the outer wall of the rotor outer ring (33), and a radial channel (7) is formed between the side wall of the rotor rib (32) and the side wall of the adjacent stator rib (22). The first axial channel (6), the radial channel (7) and the second axial channel (8) are connected in sequence to form a second channel for shearing and dispersing the material.

2. The shearing and dispersing device according to claim 1, characterized in that, The stator unit (2) and the rotor unit (3) are arranged opposite to each other. In the axial direction of the shaft core (4), the thickness of the stator outer ring (21) is greater than the thickness of the stator inner ring (23) and the stator rib (22), and the thickness of the rotor inner ring (31) is greater than the thickness of the rotor outer ring (33) and the rotor rib (32). A second axial channel (8) is formed between the outer wall of the rotor inner ring (31) and the inner wall of the stator inner ring (23), and the flow direction of the first axial channel (6) and the second axial channel (8) is consistent with the axial direction of the shaft core (4); The flow direction of the radial channel (7) is perpendicular to the axial direction of the shaft core (4); The second axial channel (8) connects the two radial channels (7) on both sides of the corresponding stator bar (22) so that multiple second channels are connected in sequence.

3. The shearing and dispersing device according to claim 2, characterized in that, The width of the radial channel (7) is adjustable, and its width adjustment range is 1-4mm.

4. The shearing and dispersing device according to claim 3, characterized in that, It also includes an adjusting washer, and at least one side of the inner ring (31) of the rotor is provided with a receiving groove. The adjusting washer is sleeved on the shaft core (4) and located in the receiving groove. The adjusting washer is adapted to adjust the width of the radial channel (7).

5. The shearing and dispersing device according to claim 1, characterized in that, It also includes a fastener (5), which includes a gasket (51) sleeved on the shaft core (4) and abutting against the rotor inner ring (31) located at the front port of the cylinder (1), and a fastener (52) connected to the shaft core (4) to be adapted to fix the gasket (51) on the rotor inner ring (31).

6. The shearing and dispersing device according to claim 5, characterized in that, The inner ring (31) of the rotor is provided with a limiting groove on the side facing the front end of the cylinder (1), and the gasket (51) abuts against the bottom of the limiting groove.

7. The shearing and dispersing device according to claim 1, characterized in that, The cylinder (1) is provided with a first positioning key (11), and the outer wall of the stator outer ring (21) is provided with a first positioning groove (211) that can cooperate with the positioning key; the shaft core (4) is provided with at least one second positioning key (41), and the inner wall of the rotor inner ring (31) is provided with a second positioning groove (311) that cooperates with the second positioning key (41).

8. The shearing and dispersing device according to claim 1, characterized in that, The cylinder (1) has a medium heat exchange channel on its cylinder wall, and the medium heat exchange channel has a medium inlet and a medium outlet.

9. A continuous pulping apparatus, characterized in that, The device includes a screw extrusion apparatus and a shearing and dispersing apparatus as described in any one of claims 1-8 above. The screw extrusion apparatus includes an extrusion barrel and a screw extrusion element disposed within the extrusion barrel. The barrel (1) is connected to the discharge end of the extrusion barrel.

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