Pulping machine

Abstract

The present utility model discloses a pulping machine, which comprises a rack, a mixing device and a dispersing device. The rack is provided with a mixing cavity and a dispersing cavity, wherein the mixing device is accommodated in the mixing cavity, and the dispersing device is accommodated in the dispersing cavity. The dispersing cavity is provided with a liquid inlet, and the mixing cavity is provided with a liquid outlet. The liquid inlet, the dispersing cavity, the mixing cavity and the liquid outlet are sequentially communicated. The mixing cavity is further provided with a powder material inlet. The powder material inlet, the mixing cavity and the liquid outlet are sequentially communicated along the flow direction of the powder material. The liquid outlet is connected to a filter device. The pulping machine has a protection function which can prevent hard impurities (such as screws) from damaging the dispersing device (or the weighing and grinding device) of the pulping machine.

Description

A pulping machine Technical Field

[0001] The utility model relates to the technical field of mixing equipment, in particular to a pulping machine. Background Art

[0002] With the development of powder technology, more and more ultrafine powders need to be dispersed into a small amount of liquid (liquid, i.e., solvent) to form a slurry with high solid content and high viscosity. However, it is difficult to evenly mix slurries with high solid content and high viscosity. Therefore, equipment is needed to fully disperse and grind them to improve the physical properties of the slurry.

[0003] The pulping machine's work is mainly divided into early mixing and later dispersion (also known as grinding or shearing). Patent document CN113499698A discloses a powder-liquid mixer, which includes a mixing chamber and a dispersion chamber. The slurry flows in a circular pattern: mixing chamber (i.e., stirring chamber) → mixing outlet → liquid storage tank (i.e., solvent tank) → liquid feed port → dispersion chamber → mixing chamber.

[0004] However, the powder material from the pulping machine may be mixed with hard impurities (such as screws), which may cause damage to the dispersing device (also known as the grinding device or the shearing device) of the pulping machine.

[0005] Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a pulping machine having a protective function, thereby preventing hard impurities (such as screws) from damaging the dispersing device (or grinding device) of the pulping machine.

[0007] The purpose of this utility model is achieved by the following technical solutions:

[0008] A pulping machine comprises a frame, a mixing device, and a dispersing device; the frame has a mixing chamber and a dispersing chamber, the mixing device is accommodated in the mixing chamber, and the dispersing device is accommodated in the dispersing chamber; the dispersing chamber has a liquid inlet, and the mixing chamber has a liquid outlet, and the liquid inlet, the dispersing chamber, the mixing chamber, and the liquid outlet are connected in sequence; the mixing chamber also has a powder material inlet, and the powder material inlet, the mixing chamber, and the liquid outlet are connected in sequence along the flow direction of the powder material; the liquid outlet is connected to a filtering device.

[0009] Furthermore, the filtering device includes a first pipe and a second pipe, the first pipe is connected to the liquid outlet, the second pipe is located below the first pipe, the top of the second pipe is connected to the bottom wall of the first pipe, the first pipe is used to connect to the liquid storage tank, and the bottom of the second pipe has a sealing structure.

[0010] Furthermore, the blocking structure is detachably connected to the second pipe.

[0011] Furthermore, the frame is further provided with a cooling cavity, which surrounds the periphery of the dispersion cavity and is isolated from the dispersion cavity.

[0012] Furthermore, the inlet of the cooling cavity is located at the bottom of the cooling cavity, and the outlet of the cooling cavity is located at the top of the cooling cavity.

[0013] Furthermore, the pulping machine also includes an internal circulation flushing pipe, which is connected to a flushing valve and a power water pump. The inlet of the internal circulation flushing pipe is connected to the mixing chamber, and the outlet of the internal circulation flushing pipe faces the mixing device.

[0014] Furthermore, the mixing device includes a centrifugal impeller, which is pivotally connected to the frame via a rotating shaft; the impeller body of the centrifugal impeller has a plurality of upper blades, which are arranged at intervals around the circumference of the impeller body; the impeller body of the centrifugal impeller is also connected to a plurality of lower blades, which are located directly below the impeller body and are arranged at intervals around the circumference of the impeller body; the lower blades extend from the inside to the outside along the radial direction of the impeller body to the edge of the bottom of the impeller body; and the lower blades are provided with a plurality of turbulent flow holes;

[0015] The bottom of each upper blade is connected to the bottom of one of the lower blades, and the bottom of the upper blade continues to extend from the edge of the bottom of the impeller body in the radial direction of the impeller body to form a protrusion, and the outermost end of the lower blade extends to directly below the protrusion, so that a small stirring zone is formed between two adjacent protrusions;

[0016] The plurality of turbulent flow holes of the lower blade are located on the horizontal side of the small stirring zone;

[0017] The upper blades are of a one-piece structure and extend spirally and obliquely downward along the circumference of the impeller body;

[0018] The mixing device further comprises a centrifugal wheel body having a plurality of cutting rods, the plurality of cutting rods being arranged at intervals on the side wall of the centrifugal wheel body; the centrifugal wheel body is connected to the top of the impeller body;

[0019] The scattering centrifugal wheel body is detachably connected to the impeller body; the side wall of the cutting rod has multiple sharp edges;

[0020] The scattering centrifugal wheel body is arranged in a conical structure, and the cross-sectional outer contour of the scattering centrifugal wheel body gradually increases from top to bottom; multiple cutting rods extend spirally and at intervals downward along the circumference of the scattering centrifugal wheel body to form a scattering unit combination, and multiple scattering unit combinations are distributed at intervals around the circumference of the scattering centrifugal wheel body.

[0021] Furthermore, the dispersion device includes a grinding stator and a grinding rotor; the grinding stator and the grinding rotor are both disc-shaped structures, and the grinding stator and the grinding rotor are coaxially and stacked; the grinding stator is provided with a plurality of first axial through holes, and the plurality of first axial through holes are arranged at intervals from each other; the grinding rotor is provided with a plurality of second axial through holes, and the plurality of second axial through holes are arranged at intervals from each other; when the grinding rotor rotates relative to the grinding stator, at least part of the first axial through holes can be connected with at least part of the second axial through holes.

[0022] A first flow-disrupting assembly is provided on the end surface of the grinding stator facing the grinding rotor, wherein the first flow-disrupting assembly includes a plurality of first flow-disrupting units, and the plurality of first flow-disrupting units are arranged at intervals from each other;

[0023] A second spoiler assembly is provided on the end surface of the grinding rotor facing the grinding stator, wherein the second spoiler assembly includes a plurality of second spoiler units, and the plurality of second spoiler units are arranged at intervals from each other;

[0024] Furthermore, the first flow-disrupting unit is a groove structure; the first flow-disrupting unit is a long strip structure, and extends from the inside to the outside in the radial direction of the grinding stator; the second flow-disrupting unit is a groove structure; the second flow-disrupting unit is a long strip structure, and extends from the inside to the outside in the radial direction of the grinding rotor;

[0025] The grinding stator and the grinding rotor are spaced apart from each other so as to form a slurry flow gap therebetween.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] After the powder material is mixed with the liquid (i.e., solvent) in the mixing chamber, it needs to pass through the filtering device first and then through the dispersion device of the dispersion chamber, so that the hard impurities (such as screws) mixed in the powder material have been filtered out by the filtering device, so that the hard impurities (such as screws) will not cause damage to the dispersion device, which improves the protection capability of the pulping machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic structural diagram of a pulping machine of the present invention, wherein the solid arrow line represents the flow direction of the powder material, and the dotted arrow line represents the flow direction of the slurry;

[0029] FIG2 is a schematic structural diagram of the centrifugal impeller of FIG1 ;

[0030] FIG3 is another perspective view of FIG2;

[0031] FIG4 is a schematic structural diagram of the connection between the centrifugal wheel body and the cutting rod in FIG1 ;

[0032] FIG5 is a schematic structural diagram of the dispersion device of FIG1 ;

[0033] FIG6 is a schematic structural diagram of the grinding stator of FIG5 ;

[0034] Figure 7 is a schematic diagram of the structure of the grinding rotor in Figure 5. In the figure: 1, frame; 11, mixing chamber; 111, liquid outlet; 112, powder material inlet; 12, dispersion chamber; 121, liquid inlet; 13, cooling chamber; 2, mixing device; 21, centrifugal impeller; 211, impeller body; 212, upper blade; 2121, protrusion; 213, lower blade; 2131, turbulent flow hole; 214, Small stirring area; 22. Breaking up the centrifugal wheel body; 221. Cutting rod; 3. Dispersing device; 31. Grinding stator; 311. First axial through hole; 312. Second spoiler assembly; 3121. Second spoiler unit; 32. Grinding rotor; 321. Second axial through hole; 322. First spoiler assembly; 3221. First spoiler unit; 33. Flow gap; 4. Filtering device; 41. First pipeline; 42. Second pipeline; 43. Blocking structure; 5. Internal circulation flushing pipeline; 51. Flushing valve; 6. Rotating shaft; 7. Ball valve. DETAILED DESCRIPTION

[0035] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element, or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element, or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are intended only to describe specific embodiments and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0038] FIG1 shows a pulping machine according to a preferred embodiment of the present invention, which includes a frame 1, a mixing device 2, and a dispersing device 3. The frame 1 has a mixing chamber 11 and a dispersing chamber 12. The mixing device 2 is housed in the mixing chamber 11, and the dispersing device 3 is housed in the dispersing chamber 12. The dispersing chamber 12 has a liquid inlet 121, and the mixing chamber 11 has a liquid outlet 111. The liquid inlet 121, the dispersing chamber 12, the mixing chamber 11, and the liquid outlet 111 are sequentially connected. The mixing chamber 11 also has a powder material inlet 112. The powder material inlet 112, the mixing chamber 11, and the liquid outlet 111 are sequentially connected along the flow direction of the powder material. The liquid outlet 111 is connected to the filter device 4.

[0039] With this arrangement, the slurry flow direction of this pulping machine is: liquid storage tank → liquid inlet 121 → dispersion chamber 12 → mixing chamber 11 → liquid outlet 111 → filter device 4 → liquid storage tank. The flow direction of hard impurities (such as screws) is: powder material inlet 112 → mixing chamber 11 → liquid outlet 111 → filter device 4. As the powder material is added to the mixing chamber 11 in small amounts multiple times, and as the solid content of the slurry increases, the pulping machine will enter the dispersion stage (i.e., grinding stage or shearing stage) from the mixing stage. In the dispersion stage, the addition of powder material will be stopped, and the slurry will be fully dispersed to improve the mixing degree of the slurry, that is, to improve the performance of the slurry. Specifically, the addition of powder material is controlled by the ball valve 7 at the top of the frame 1.

[0040] Obviously, after the powder material is mixed with the liquid (i.e., solvent) in the mixing chamber 11, it needs to first pass through the filtering device 4 and then pass through the dispersing device 3 of the dispersing chamber 12, so that the hard impurities (such as screws) mixed in the powder material have been filtered out by the filtering device 4, so that the hard impurities (such as screws) will not cause damage to the dispersing device 3, which improves the protection capability of the pulping machine.

[0041] Referring to Figure 1, preferably, the filtering device 4 includes a first pipe 41 and a second pipe 42. The first pipe 41 is connected to the liquid outlet 111, the second pipe 42 is located below the first pipe 41, the top of the second pipe 42 is connected to the bottom wall of the first pipe 41, the first pipe 41 is used to connect to the liquid storage tank, and the bottom of the second pipe 42 has a blocking structure 43. With this arrangement, when hard impurities (such as screws) flow along the first pipe 41 and enter directly above the second pipe 42, they fall into the second pipe 42 due to their own gravity. Moreover, the fluidity of the slurry based on the second pipe 42 is poor, so that the hard impurities are stably retained in the second pipe 42. It is understandable that the filter can also adopt a conventional mature filter.

[0042] In order to facilitate regular cleaning of hard impurities, the blocking structure 43 is detachably connected to the second pipe 42 .

[0043] Referring to FIG1 , preferably, since the dispersion device 3 generates a large amount of heat during the slurry dispersion process, in order to prevent the slurry from being damaged by high temperature, the frame 1 is further provided with a cooling chamber 13. The cooling chamber 13 surrounds the periphery of the dispersion chamber 12 and is isolated from the dispersion chamber 12. To improve the cooling effect, the inlet of the cooling chamber 13 is located at the bottom of the cooling chamber 13, and the outlet of the cooling chamber 13 is located at the top of the cooling chamber 13.

[0044] Referring to FIG1 , a pulping machine preferably further includes an internal circulation flushing pipe 5, to which a flushing valve 51 and a power water pump are connected. The inlet of the internal circulation flushing pipe 5 is communicated with the mixing chamber 11, and the outlet of the internal circulation flushing pipe 5 faces the mixing device 2. In this way, the slurry in the mixing chamber 11 is pumped onto the mixing device 2 through the internal circulation flushing pipe 5, thereby bringing the powder material remaining on the mixing device 2 into the slurry.

[0045] Referring to Figures 1-3, the mixing device 2 preferably includes a centrifugal impeller 21, which is pivotally connected to the frame 1 via a rotating shaft 6. The impeller body 211 of the centrifugal impeller 21 has a plurality of upper blades 212, which are arranged at intervals around the circumference of the impeller body 211. The impeller body 211 of the centrifugal impeller 21 is also connected to a plurality of lower blades 213, which are located directly below the impeller body 211 and are arranged at intervals around the circumference of the impeller body 211. The lower blades 213 extend radially from the inside to the outside of the impeller body 211 to the edge of the bottom of the impeller body 211. The lower blades 213 are provided with a plurality of turbulent flow holes 2131. During operation, the liquid solvent and powdered material meet and mix at the bottom of the impeller body 211 to form a slurry. The slurry is then stirred by the lower blades 213, and the centrifugal force of the motion itself is then used to radially discharge the slurry. This ensures high stirring efficiency while also taking into account the discharge capacity of the mixing device 2. Apparently, the upper blades 212 evenly distribute the powder around the bottom of the impeller body 211, thereby improving the stirring efficiency of the slurry by the lower blades 213. By designing the lower blades 213 to extend radially outward from the inside to the edge of the bottom of the impeller body 211, the stirring area of ​​the lower blades 213 is increased, ensuring a certain degree of stirring efficiency while significantly improving its discharge capacity. Furthermore, the multiple turbulent holes in the lower blades 213 enhance the stirring capacity of the lower blades 213, thereby compensating for the decrease in stirring efficiency. Thus, the present mixing device 2 ensures high stirring efficiency while also taking into account the discharge capacity of the mixing device 2.

[0046] 2 and 3 , preferably, the bottom of each upper blade 212 is connected to the bottom of one of the lower blades 213, and the bottom of the upper blade 212 continues to extend from the edge of the bottom of the impeller body 211 in the radial direction of the impeller body 211 to form a protrusion 2121. The outermost end of the lower blade 213 extends to directly below the protrusion 2121, so that a small stirring zone 214 is formed between two adjacent protrusions 2121. Obviously, based on the two adjacent lower blades 213 and the two adjacent protrusions 2121 jointly enclosing a semi-enclosed small stirring zone 214, and based on the bottom of each upper blade 212 being connected to the bottom of one of the lower blades 213, the discharge capacity of each lower blade 213 is further improved. Therefore, the formation of the small stirring zone 214 not only improves the stirring efficiency, but also takes into account the discharge capacity of the centrifugal impeller 21. More preferably, in order to maximize the effect of the turbulence holes, the plurality of turbulence flow holes 2131 of the lower blade 213 are located on the horizontal side of the small stirring zone 214 .

[0047] 2 and 3 , preferably, the upper blades 212 are of a unitary structure and extend spirally and obliquely downward along the circumference of the impeller body 211 ; with this arrangement, the drainage area of ​​the upper blades 212 is larger, thereby enabling the powder material already located between two adjacent upper blades 212 to escape to between the other two upper blades 212 , so that the centrifugal impeller 21 can drain the powder solid more evenly, thereby improving the stirring capacity of the centrifugal impeller 21 .

[0048] Referring to FIG4 , the mixing device 2 preferably further includes a centrifugal wheel body 22 having a plurality of cutting rods 221 spaced apart on the sidewalls of the centrifugal wheel body 22. The centrifugal wheel body 22 is connected to the top of the impeller body 211. This arrangement allows the centrifugal wheel body 22 to more evenly disperse the powder material, thereby distributing the powder material more evenly around the bottom of the impeller body 211.

[0049] Referring to FIG1 , preferably, to facilitate maintenance and reduce maintenance costs, the centrifugal wheel body 22 is detachably connected to the impeller body 211. This arrangement allows the centrifugal wheel body 22 and the impeller body 211 to be replaced while the other can continue to be used. To provide more sharp cutting areas for the cutting rod 221, the sidewall of the cutting rod 221 has multiple sharp edges.

[0050] Referring to FIG4 , the centrifugal wheel body 22 is preferably configured in a conical structure, with the cross-sectional outer contour of the centrifugal wheel body 22 gradually increasing in size from top to bottom. A plurality of cutting rods 221 spirally and spaced downwardly along the circumference of the centrifugal wheel body 22 form a plurality of breaking unit assemblies, which are spaced apart around the circumference of the centrifugal wheel body 22. This arrangement allows the cutting rods 221 to be more densely distributed along the circumference of the centrifugal wheel body 22 when viewed from above, thereby preventing falling powder materials from directly passing through and being cut by the cutting rods 221. This ensures that agglomerated materials in the powder materials are reliably broken up.

[0051] Referring to Figure 5, preferably, the dispersing device 3 includes a grinding stator 31 and a grinding rotor 32; the grinding stator 31 and the grinding rotor 32 are both disc-shaped structures, and the grinding stator 31 and the grinding rotor 32 are coaxially and stacked; the grinding stator 31 is provided with a plurality of first axial through holes 311, and the plurality of first axial through holes 311 are arranged at intervals from each other; the grinding rotor 32 is provided with a plurality of second axial through holes 321, and the plurality of second axial through holes 321 are arranged at intervals from each other; when the grinding rotor 32 rotates relative to the grinding stator 31, at least part of the first axial through holes 311 can be connected with at least part of the second axial through holes 321. In other words, at least a portion of the first axial through-hole 311 and at least a portion of the second axial through-hole 321 can be in a state of constant communication, or only communicate when they at least partially overlap. The essential requirement is that as long as the grinding rotor 32 rotates relative to the grinding stator 31, at least a portion of the first axial through-hole 311 and at least a portion of the second axial through-hole 321 remain in communication. This allows the slurry to pass through the first grinding assembly and be sheared by the grinding stator 31 and grinding rotor 32, thereby improving the slurry's mixing and fluidity, that is, the performance of the slurry. Obviously, by configuring both the grinding stator 31 and the grinding rotor 32 as disc-shaped structures, they can be coaxially and stacked, enabling them to shear the slurry and improve the slurry's performance. Furthermore, since both the first axial through-hole 311 and the second axial through-hole 321 are used for slurry passage, the vast majority of the slurry will inevitably pass along the shearing point between the stator and the rotor, thereby ensuring that the slurry is reliably sheared, thereby improving the slurry's dispersion and grinding effects. Furthermore, when the grinding rotor 32 rotates relative to the grinding stator 31, at least a portion of the first axial through-hole 311 communicates with at least a portion of the second axial through-hole 321, ensuring continuous flow of the slurry. Furthermore, the stacked arrangement of the grinding stator 31 and the grinding rotor 32 significantly increases the dispersion volume between them, thereby significantly improving the production efficiency of the pulping machine. Clearly, the dispersion device 3 may also utilize other conventional structures.

[0052] Preferably, referring to Figures 6 and 7, a first spoiler assembly 322 is provided on the end surface of the grinding stator 31 facing the grinding rotor 32. The first spoiler assembly 322 includes a plurality of first spoiler units 3221, and the plurality of first spoiler units 3221 are spaced apart from each other. This arrangement further increases the turbulence of the slurry through the first spoiler assembly 322, thereby causing the slurry to remain in the dispersion device 3 for a slightly longer time, thereby further increasing the shearing effect and further improving the performance of the slurry. Similarly, a second spoiler assembly 312 is provided on the end surface of the grinding rotor 32 facing the grinding stator 31. The second spoiler assembly 312 includes a plurality of second spoiler units 3121, and the plurality of second spoiler units 3121 are spaced apart from each other.

[0053] Preferably, to improve grinding accuracy and avoid forcing a larger gap between the grinding stator 31 and the grinding rotor 32, the first flow-disrupting element 3221 is a groove structure. In other words, if the first flow-disrupting element 3221 were a raised structure, this would require increasing the gap between the grinding stator 31 and the grinding rotor 32. More preferably, to enable the first flow-disrupting element 3221 to disrupt the flow over a large area, the first flow-disrupting element 3221 is an elongated strip-shaped structure, extending radially outward from the inside of the grinding stator 31. Similarly, the second flow-disrupting element 3121 is a groove structure; the second flow-disrupting element 3121 is an elongated strip-shaped structure, extending radially outward from the inside of the grinding rotor 32.

[0054] Preferably, the grinding stator 31 and the grinding rotor 32 are spaced apart to form a slurry flow gap 33. In this way, the first axial through hole 311 and the second axial through hole 321 are in a continuous communication state to ensure the fluidity of the slurry.

[0055] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A pulping machine, characterized in that: The invention comprises a frame (1), a mixing device (2), and a dispersing device (3); the frame (1) has a mixing chamber (11) and a dispersing chamber (12); the mixing device (2) is accommodated in the mixing chamber (11), and the dispersing device (3) is accommodated in the dispersing chamber (12); the dispersing chamber (12) has a liquid inlet (121), and the mixing chamber (11) has a liquid outlet (111); the liquid inlet (121), the dispersing chamber (12), the mixing chamber (11), and the liquid outlet (111) are sequentially connected; the mixing chamber (11) also has a powder material inlet (112); the powder material inlet (112), the mixing chamber (11), and the liquid outlet (111) are sequentially connected along the flow direction of the powder material; the liquid outlet (111) is connected to a filtering device (4).

2. A pulping machine according to claim 1, characterized in that: The filtering device (4) comprises a first pipe (41) and a second pipe (42), wherein the first pipe (41) is connected to the liquid outlet (111), the second pipe (42) is located below the first pipe (41), the top of the second pipe (42) is communicated with the bottom wall of the first pipe (41), the first pipe (41) is used to connect to a liquid storage tank, and the bottom of the second pipe (42) has a blocking structure (43).

3. A pulping machine according to claim 2, characterized in that: The blocking structure (43) is detachably connected to the second pipe (42).

4. A pulping machine according to claim 1, characterized in that: The frame (1) is further provided with a cooling cavity (13), and the cooling cavity (13) surrounds the periphery of the dispersion cavity (12) and is isolated from the dispersion cavity (12).

5. A pulping machine according to claim 4, characterized in that: The inlet of the cooling cavity (13) is located at the bottom of the cooling cavity (13), and the outlet of the cooling cavity (13) is located at the top of the cooling cavity (13).

6. A pulping machine according to claim 1, characterized in that: The pulping machine further comprises an internal circulation flushing pipe (5), the internal circulation flushing pipe (5) being connected to a flushing valve (51) and a power water pump, the inlet of the internal circulation flushing pipe (5) being in communication with the mixing chamber (11), and the outlet of the internal circulation flushing pipe (5) being directed toward the mixing device (2).

7. A pulping machine according to claim 1, characterized in that: The mixing device (2) comprises a centrifugal impeller (21), which is pivotally connected to the frame (1) via a rotating shaft (6); the impeller body (211) of the centrifugal impeller (21) has a plurality of upper blades (212), which are arranged at intervals around the circumference of the impeller body (211); the impeller body (211) of the centrifugal impeller (21) is further connected with a plurality of lower blades (213), which are located directly below the impeller body (211) and are arranged at intervals around the circumference of the impeller body (211); the lower blades (213) extend from the inside to the outside along the radial direction of the impeller body (211) to the edge of the bottom of the impeller body (211); the lower blades (213) are provided with a plurality of turbulent flow holes (2131); The bottom of each upper blade (212) is connected to the bottom of one of the lower blades (213), and the bottom of the upper blade (212) continues to extend from the edge of the bottom of the impeller body (211) along the radial direction of the impeller body (211) to form a protrusion (2121), and the outermost end of the lower blade (213) extends to directly below the protrusion (2121), so that a small stirring zone (214) is formed between two adjacent protrusions (2121); The plurality of turbulent flow holes (2131) of the lower blade (213) are located on the horizontal side of the small stirring zone (214); The upper blades (212) are of a one-piece structure and extend spirally and obliquely downward along the circumference of the impeller body (211); The mixing device (2) further comprises a centrifugal wheel body (22) for breaking up the centrifugal wheel. It has a plurality of cutting rods (221), which are arranged at intervals on the side wall of the scattering centrifugal wheel body (22); the scattering centrifugal wheel body (22) is connected to the top of the impeller body (211); The scattering centrifugal wheel body (22) is detachably connected to the impeller body (211); the side wall of the cutting rod (221) has multiple sharp edges; The scattering centrifugal wheel body (22) is arranged in a cone structure, and the cross-sectional outer contour of the scattering centrifugal wheel body (22) gradually increases from top to bottom; a plurality of cutting rods (221) extend downwardly in a spiral manner and at intervals along the circumference of the scattering centrifugal wheel body (22) to form a scattering unit combination, and a plurality of the scattering unit combinations are distributed at intervals around the circumference of the scattering centrifugal wheel body (22).

8. A pulping machine according to claim 1, characterized in that: The dispersing device (3) comprises a grinding stator (31) and a grinding rotor (32); the grinding stator (31) and the grinding rotor (32) are both disc-shaped structures, and the grinding stator (31) and the grinding rotor (32) are coaxially and stacked; the grinding stator (31) is provided with a plurality of first axial through holes (311), and the plurality of first axial through holes (311) are arranged at intervals from each other; the grinding rotor (32) is provided with a plurality of second axial through holes (321), and the plurality of second axial through holes (321) are arranged at intervals from each other; when the grinding rotor (32) rotates relative to the grinding stator (31), at least part of the first axial through holes (311) and at least part of the second axial through holes (321) can be communicated with.

9. A pulping machine according to claim 8, characterized in that: A first flow-disrupting component (322) is provided on the end surface of the grinding stator (31) facing the grinding rotor (32), wherein the first flow-disrupting component (322) comprises a plurality of first flow-disrupting units (3221), and the plurality of first flow-disrupting units (3221) are arranged at intervals from each other; A second spoiler assembly (312) is provided on the end surface of the grinding rotor (32) facing the grinding stator (31), and the second spoiler assembly (312) includes a plurality of second spoiler units (3121). The second spoiler units (3121) are arranged at intervals from each other.

10. A pulping machine according to claim 9, characterized in that: The first flow-disrupting unit (3221) is a groove structure; the first flow-disrupting unit (3221) is a long strip structure, and extends from the inside to the outside in the radial direction of the grinding stator (31); the second flow-disrupting unit (3121) is a groove structure; the second flow-disrupting unit (3121) is a long strip structure, and extends from the inside to the outside in the radial direction of the grinding rotor (32); The grinding stator (31) and the grinding rotor (32) are spaced apart to form a slurry flow gap (33) therebetween.