Pulping machine

Abstract

The utility model discloses a pulping machine which comprises an installation base body, a supporting assembly and a dispersing main shaft. The mounting base body is provided with a cavity; the supporting assembly is connected to the mounting base body, the supporting assembly divides the cavity into a feeding cavity, a shearing cavity and a mixing cavity which communicate with one another from bottom to top, the feeding cavity communicates with a water inlet pipe, and the mixing cavity communicates with a discharging pipe; the dispersing main shaft is rotatably arranged on the mounting base body, penetrates through the supporting assembly and is connected with a dispersing rotor, a dispersing and mixing turbine set and a dispersing impeller from bottom to top, and the dispersing rotor is arranged in the shearing cavity and divides the shearing cavity into an upper shearing area and a lower shearing area which are communicated with each other; the scattering and mixing turbine set and the scattering impeller are both arranged in the mixing cavity; the feeding cavity is used for introducing liquid, the shearing cavity is used for pumping the liquid into the mixing cavity through the scattering and mixing turbine set under the action of the dispersing rotor, the mixing cavity is used for bearing powder and the liquid, and the scattering and mixing turbine set is used for mixing the powder and the liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of pulping machines, and particularly relates to a pulping machine. Background Art

[0002] A pulping machine is a commonly used mechanical pulping device, which is a machine used to mix powder materials and liquids to form a slurry.

[0003] In a traditional pulping machine, water and powder are usually mixed in a container, and then the mixture is stirred by an electric stirring shaft to make pulp. The traditional pulping machine has a narrow applicable working condition range and cannot make a slurry with a high solid content, which affects production. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a pulping machine, which can make a slurry with a solid content of more than 80%, and improve the convenience of production.

[0005] A pulping machine according to an embodiment of the first aspect of the utility model includes an installation base, a support assembly and a dispersion main shaft; the installation base is provided with a cavity; the support assembly is connected to the installation base, and the support assembly divides the cavity into a connected feeding cavity, a shearing cavity and a mixing cavity from bottom to top. The feeding cavity is communicated with a water inlet pipe, and the mixing cavity is communicated with a discharge pipe; the dispersion main shaft is rotatably arranged on the installation base, the dispersion main shaft passes through the support assembly, and the dispersion main shaft is connected with a dispersion rotor, a dispersion and mixing turbine group and a dispersion impeller from bottom to top. The dispersion rotor is arranged in the shearing cavity, and the dispersion rotor divides the shearing cavity into a connected upper shearing area and a lower shearing area. The dispersion and mixing turbine group and the dispersion impeller are both arranged in the mixing cavity; the feeding cavity is used for introducing liquid, the shearing cavity is used for pumping the liquid into the mixing cavity through the dispersion and mixing turbine group under the action of the dispersion rotor, the mixing cavity is used for carrying powder materials and liquid, and the dispersion and mixing turbine group and the dispersion impeller are used for mixing the powder materials and the liquid.

[0006] According to a pulping machine of the embodiment of the utility model, at least the following beneficial effects are achieved: the pulping machine can generate strong suction when working, the powder feeding port can generate a negative pressure difference of 95kpa when closed, which can effectively prevent powder blockage caused by insufficient discharge pressure, the pulping machine can produce slurry with a solid content of up to 80%, the pulping machine assembly is a stacked installation, which can be dismantled layer by layer from the top, and is convenient for disassembly and maintenance, the pulping machine has a compact structure, and avoids unstable factors in design, and can work under more severe working conditions, thereby improving the convenience of production. The liquid enters the mixing chamber from the feeding chamber, and the powder enters the mixing chamber after being dispersed. Under the operation of the breaking and mixing turbine group, the powder is mixed into a primary slurry-like material. As the powder is continuously added, the solid content of the slurry continues to increase, and a high-pressure chamber can be formed between the upper and lower shear zones to accelerate the wetting speed of the powder. The unique turbulent jet mixing hole of the inner turbine can intensify the mixing intensity of the powder and liquid, greatly improving the mixing efficiency.

[0007] According to some embodiments of the utility model, the support assembly includes: a first support ring, a first fixed wheel, a second fixed wheel, a second support ring and a cover plate, the first support ring is connected in the cavity, the first support ring is coaxially arranged with the cavity, and the feeding cavity is arranged below the first support ring; the first fixed wheel is connected to the lower end of the first support ring; the second fixed wheel is connected to the upper end of the first support ring, the first fixed wheel and the second fixed wheel are both provided with a first shearing tooth group at the ends opposite to each other in the up and down directions, the upper and lower ends of the dispersion rotor are both provided with a second shearing tooth group, the first shearing tooth group and the second shearing tooth group are staggered along the radial direction of the dispersion rotor, and the first fixed wheel and the second fixed wheel define the shearing cavity; the second support ring is connected in the cavity, the lower end of the second support ring abuts the upper end of the first support ring, and the second support ring is coaxially arranged with the first support ring; the cover plate is detachably connected to the mounting base, the cover plate is used to encapsulate the upper port of the mixing cavity, and the cover plate, the second support ring and the second fixed wheel define the mixing cavity.

[0008] According to some embodiments of the present invention, the first shearing tooth group and the second shearing tooth group are both provided with a plurality of first shearing tooth groups and the second shearing tooth groups, and the plurality of first shearing tooth groups and the second shearing tooth groups provide a better shearing effect.

[0009] According to some embodiments of the present invention, each group of the first shearing tooth group includes a plurality of first shearing teeth, and each group of the second shearing tooth group includes a plurality of second shearing teeth. The plurality of first shearing teeth are evenly distributed around the circumference of the corresponding first fixed wheel or the second fixed wheel, and the plurality of second shearing teeth are evenly distributed around the circumference of the dispersion rotor.

[0010] According to some embodiments of the utility model, the breaking and mixing turbine group includes a first turbine and a second turbine, the first turbine is fixedly clamped on the upper end of the first fixed wheel, and an annular space is defined between the first turbine and the dispersion main shaft; the second turbine is sleeved on the dispersion main shaft, and the second turbine is accommodated in the annular space. The second turbine is provided with a turbulent jet mixing hole, and the turbulent jet mixing hole connects the shear chamber and the mixing chamber. The combination of the two turbines forms a better mixing module, which is convenient for mixing powder and liquid.

[0011] According to some embodiments of the present utility model, the first turbine is configured as a slot-type turbine, the second turbine is configured as a conical turbine, and the second turbine is arranged in the slot space of the first turbine.

[0012] According to some embodiments of the utility model, the first turbine and the upper end of the first fixed wheel are clamped together by means of a labyrinth seal, and the provided labyrinth seal prevents liquid from flowing back, flowing over or overflowing.

[0013] According to some embodiments of the present invention, a grille is further included. The grille is detachably connected to the lower end of the cover plate, and the grille extends into the gap between the first turbine and the second turbine.

[0014] According to some embodiments of the present utility model, the breaking up impeller is sleeved on the upper end of the dispersion main shaft.

[0015] According to some embodiments of the utility model, a discharger is also included, wherein the discharger includes a feed barrel, a hopper and a prying shaft, wherein the hopper is connected to the upper end of the feed barrel, and the hopper is used to load powder; the prying shaft is rotatably arranged on the feed barrel, and the prying shaft is accommodated in the feed barrel, and a plurality of prying pieces are arranged on the prying shaft, and the prying pieces are used to pry the powder downwardly along the feed barrel; a connecting barrel is arranged at the upper end of the cover plate, and the connecting barrel is connected to the mixing chamber, and the lower end of the feed barrel is detachably plugged into the connecting barrel, and the feed barrel is connected to the connecting barrel. The discharger has a simple structure and is easy to operate.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic diagram of the cross-section structure of a pulping machine according to an embodiment of the utility model;

[0019] Figure 2 is Figure 1 an exploded cut-away view of the pulping machine shown;

[0020] Figure 3 is Figure 1 a schematic structural view of the pulping machine shown;

[0021] Figure 4 is Figure 3 an exploded view of the pulping machine shown;

[0022] Figure 5 is Figure 1 a schematic structural view of the cooperation of the first fixed wheel, the second fixed wheel and the dispersion rotor of the pulping machine shown;

[0023] Figure 6 is Figure 5 an exploded view of;

[0024] Figure 7 is Figure 1 a schematic structural view of the support assembly of the pulping machine shown;

[0025] Figure 8 is Figure 7 an exploded view of the support assembly of the pulping machine shown;

[0026] Figure 9 is Figure 1 a schematic structural view of the combination of the feed cylinder and the material distributing shaft on the discharger of the pulping machine shown;

[0027] Figure 10 is Figure 9 an exploded view of.

[0028] Explanation of reference numerals:

[0029] Mounting base 100, cavity 110;

[0030] Feeding cavity 111, water inlet pipe 111a;

[0031] Shearing cavity 112, upper shearing area 112a, lower shearing area 112b;

[0032] Mixing cavity 113, discharge pipe 113a;

[0033] Support assembly 200, first shearing tooth group 200a, first shearing tooth 200a1;

[0034] First support ring 210, first fixed wheel 220, second fixed wheel 230;

[0035] Second support ring 240, cover plate 250, connecting cylinder 251;

[0036] Dispersing main shaft 300, dispersing rotor 310, second shearing tooth group 311, second shearing tooth 311a;

[0037] The mixing turbine group 320, the first turbine 321, the second turbine 322, the annular space 323, and the turbulent jet mixing hole 324 are broken up;

[0038] Break up the impeller 330 and the grille 400;

[0039] Discharger 500 , feed cylinder 510 , hopper 520 , material shifting shaft 530 , and shifting piece 531 . DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "more" is two or more, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0044] Reference Figures 1 to 10, a pulping machine, comprising a mounting base 100, a support assembly 200 and a dispersion main shaft 300; the mounting base 100 is provided with a cavity 110; the support assembly 200 is connected to the mounting base 100, and the support assembly 200 divides the cavity 110 into a connected feed cavity 111, a shearing cavity 112 and a mixing cavity 113 from bottom to top. The feed cavity 111 is communicated with a water inlet pipe 111a, and the mixing cavity 113 is communicated with a discharge pipe 113a; the dispersion main shaft 300 is rotatably arranged on the mounting base 100, the dispersion main shaft 300 passes through the support assembly 200, and the dispersion main shaft 300 is connected with a dispersion rotor 310, a crushing and mixing turbine group 320 and a crushing impeller 330 from bottom to top. The dispersion rotor 310 is arranged in the shearing cavity 112, and the dispersion rotor 310 divides the shearing cavity 112 into a connected upper shearing area 112a and a lower shearing area 112b. The crushing and mixing turbine group 320 and the crushing impeller 330 are both arranged in the mixing cavity 113; the feed cavity 111 is used for introducing liquid, the shearing cavity 112 is used for pumping the liquid into the mixing cavity 113 through the crushing and mixing turbine group 320 under the action of the dispersion rotor 310, the mixing cavity 113 is used for carrying powder and liquid, and the crushing and mixing turbine group 320 and the crushing impeller 330 are used for mixing the powder and the liquid. It can be understood that the shearing cavity 112 can generate negative pressure under the shearing action when the dispersion rotor 310 rotates, and the negative pressure pumps the liquid into the mixing cavity 113 through the crushing and mixing turbine group 320, that is, the liquid enters the mixing cavity 113 from the shearing cavity 112 through the turbulent jet mixing holes 324.

[0045] The pulping machine can generate suction during operation. The suction is generated by the rotation of the dispersion and mixing turbine group 320 and the dispersion impeller 330. During operation, suction can be used to pump water or liquid, and when the powder feeding port is closed, a negative pressure of up to 95 kPa can be generated to prevent powder blockage caused by insufficient discharge pressure. In addition, a high-pressure chamber can be formed between the upper shear zone 112a and the lower shear zone 112b to accelerate the wetting speed of the powder. The centrifugal forces generated by the first shear tooth group 200a and the second shear tooth group 311 are both outward, forming an extrusion section, thus forming a high-pressure chamber. Therefore, the pulping machine can produce a slurry with a solids content of up to 80%. In addition, the pulping machine is assembled in a stacked manner and can be disassembled layer by layer from above, making disassembly, installation, and maintenance convenient. The structure of the pulping machine is compact, and unstable factors are avoided in the design, enabling it to work under more severe working conditions, such as in the presence of dry and solid materials, high-solid-content materials, and materials with dispersible particles, improving the convenience of production. It can be understood that the liquid enters the mixing chamber 113 from the feeding chamber 111, and the powder enters the mixing chamber 113 after being dispersed. Under the action of the dispersion and mixing turbine group 320, it is mixed into a primary slurry-like material. As the powder is continuously added, the solids content of the slurry continuously increases. A high-pressure chamber can be formed between the upper shear zone 112a and the lower shear zone 112b to accelerate the wetting speed of the powder. The unique turbulent jet mixing holes in the inner layer turbine can intensify the mixing intensity of the powder and liquid, greatly improving the mixing efficiency. It can be understood that the turbulent jet mixing holes are on the conical second turbine 322 and form a certain angle with the generatrix of the second turbine 322, which makes the liquid coming out of the turbulent jet mixing holes enter the mixing chamber in a turbulent manner.

[0046] Refer to Figure 2 , the dispersion main shaft 300 is equipped with an independent water cooling device, which includes a water cooling chamber 140, a water inlet pipe 130, and a water outlet pipe 120. The water cooling chamber 140 is filled with water to exchange heat on the dispersion main shaft 300, ensuring that the dispersion main shaft 300 works continuously for a long time. It can work when the material needs to be heated at a high temperature. There is no dead angle residue at the lower discharge port in the dispersion main machine. When production stops, the residual slurry inside can be discharged to avoid losses. The vulnerable parts of the pulping machine are divided into multiple independent small modules, and the later replacement and maintenance costs are low. It can be understood that there is no low-lying depression in the structure of the dispersion main machine, and all materials can be discharged. The so-called dispersion main machine is the whole pulping machine.

[0047] In some embodiments, the support assembly 200 includes: a first support ring 210, a first fixed wheel 220, a second fixed wheel 230, a second support ring 240, and a cover plate 250. The first support ring 210 is connected in the cavity 110, and the first support ring 210 is coaxially arranged with the cavity 110. The feeding cavity 111 is arranged below the first support ring 210. The first fixed wheel 220 is connected to the lower end of the first support ring 210. The second fixed wheel 230 is connected to the upper end of the first support ring 210. At the opposite ends of the first fixed wheel 220 and the second fixed wheel 230 in the up-and-down direction, a first shear tooth group 200a is provided. At the upper and lower ends of the dispersion rotor 310, a second shear tooth group 311 is provided. The first shear tooth group 200a and the second shear tooth group 311 are arranged staggeredly along the radial direction of the dispersion rotor 310. The first fixed wheel 220 and the second fixed wheel 230 define a shear cavity 112. The second support ring 240 is connected in the cavity 110. The lower end of the second support ring 240 abuts against the upper end of the first support ring 210, and the second support ring 240 is coaxially arranged with the first support ring 210. The cover plate 250 is detachably connected to the mounting base 100. The cover plate 250 is used to seal the upper port of the mixing cavity 113. The cover plate 250, the second support ring 240, and the second fixed wheel 230 define the mixing cavity 113. It can be understood that the support assembly 200 not only serves as a support for installation, but also enables each cavity to have its due function after the dispersion main shaft 300 and the dispersion rotor 310, the dispersion and mixing turbine group 320, and the dispersion impeller 330 thereon are installed.

[0048] In some embodiments, a plurality of first shear tooth groups 200a and second shear tooth groups 311 are provided. The plurality of first shear tooth groups 200a and second shear tooth groups 311 provide a better shear effect. It can be understood that the centrifugal force generated when the first shear tooth group 200a and the second shear tooth group 311 rotate will generate local high pressure.

[0049] In some embodiments, each first shear tooth group 200a includes a plurality of first shear teeth 200a1, and each second shear tooth group 311 includes a plurality of second shear teeth 311a. The plurality of first shear teeth 200a1 are evenly distributed around the circumference of the corresponding first fixed wheel 220 or second fixed wheel 230, and the plurality of second shear teeth 311a are evenly distributed around the circumference of the dispersion rotor 310.

[0050] In some embodiments, the breaking up and mixing turbine group 320 includes a first turbine 321 and a second turbine 322. The first turbine 321 is fixedly connected to the upper end of the first fixed wheel 220. An annular space 323 is defined between the first turbine 321 and the dispersion main shaft 300. The second turbine 322 is sleeved on the dispersion main shaft 300. The second turbine 322 is accommodated in the annular space 323. The second turbine 322 is provided with a turbulent jet mixing hole 324. The turbulent jet mixing hole 324 connects the shear chamber 112 and the mixing chamber 113. The combination of the two turbines forms a better mixing module, which is convenient for mixing powder and liquid.

[0051] In some embodiments, the first turbine 321 is configured as a slot-type turbine, the second turbine 322 is configured as a conical turbine, the second turbine 322 is disposed in the slot space of the first turbine 321 , and the first turbine 321 and the second turbine 322 are coaxially disposed.

[0052] In some embodiments, the first turbine 321 is clamped with the upper end of the first fixed wheel 220 by means of a labyrinth seal, and the labyrinth seal is provided to prevent liquid from flowing back, flowing over or overflowing.

[0053] In some embodiments, a grille 400 is further included, which is detachably connected to the lower end of the cover plate 250, and the grille 400 extends to the gap between the first turbine 321 and the second turbine 322. It can be understood that ordinary stirring claws stir and knead, while the grille 400 and the turbine group provided in the utility model are strong convection mixing of powder and liquid jet, which quickly forms a slurry-like material through centrifugal compression and shearing by the first turbine 321 and the second turbine 322.

[0054] In some embodiments, the scattering impeller 330 is sleeved on the upper end of the dispersion main shaft 300 .

[0055] In some embodiments, a discharger 500 is also included. The discharger 500 includes a feed barrel 510, a hopper 520 and a paddle shaft 530. The hopper 520 is connected to the upper end of the feed barrel 510, and the hopper 520 is used to load powder; the paddle shaft 530 is rotatably arranged on the feed barrel 510, and the paddle shaft 530 is accommodated in the feed barrel 510. A plurality of paddles 531 are arranged on the paddle shaft 530, and the paddles 531 are used to paddle the powder and transport it downward along the feed barrel 510; a connecting barrel 251 is arranged at the upper end of the cover plate 250, and the connecting barrel 251 is connected to the mixing chamber 113. The lower end of the feed barrel 510 is detachably plugged into the connecting barrel 251, and the feed barrel 510 is connected to the connecting barrel 251. The discharger 500 has a simple structure and is easy to operate. It can be understood that the paddle shaft 530 is driven by a motor, and the plurality of paddles 531 are evenly spaced around the circumference of the paddle shaft 530.

[0056] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant art.

Claims

1. A pulping machine, characterized in that: include: A mounting base (100) is provided with a cavity (110); A support assembly (200) connected to the mounting base (100), the support assembly (200) dividing the cavity (110) from bottom to top into a feed cavity (111), a shear cavity (112) and a mixing cavity (113) which are connected to each other, the feed cavity (111) being connected to a water inlet pipe (111a), and the mixing cavity (113) being connected to a discharge pipe (113a); A dispersion main shaft (300) is rotatably arranged on the mounting base (100), the dispersion main shaft (300) passes through the support assembly (200), and the dispersion main shaft (300) is connected with a dispersion rotor (310), a dispersion mixing turbine group (320) and a dispersion impeller (330) from bottom to top, the dispersion rotor (310) is arranged in the shearing chamber (112), and the dispersion rotor (310) divides the shearing chamber (112) into an upper shearing area (112a) and a lower shearing area (112b) that are connected, and the dispersion mixing turbine group (320) and the dispersion impeller (330) are both arranged in the mixing chamber (113); The feed chamber (111) is used to introduce liquid, the shear chamber (112) is used to pump the liquid into the mixing chamber (113) through the dispersing mixing turbine group (320) under the action of the dispersing rotor (310), the mixing chamber (113) is used to carry powder and liquid, and the dispersing mixing turbine group (320) and the dispersing impeller (330) are used to mix the powder and liquid.

2. The pulping machine according to claim 1, characterized in that: The support assembly (200) comprises: A first support ring (210) connected in the cavity (110), wherein the first support ring (210) and the cavity (110) are coaxially arranged, and the feeding cavity (111) is arranged below the first support ring (210); A first fixed wheel (220) connected to the lower end of the first supporting ring (210); a second fixed wheel (230) connected to the upper end of the first supporting ring (210); a first shearing tooth group (200a) is provided at one end of the first fixed wheel (220) and the second fixed wheel (230) opposite to each other in the upper and lower directions; a second shearing tooth group (311) is provided at the upper and lower ends of the dispersion rotor (310); the first shearing tooth group (200a) and the second shearing tooth group (311) are staggered in the radial direction of the dispersion rotor (310); and the first fixed wheel (220) and the second fixed wheel (230) define the shearing cavity (112); a second support ring (240) connected in the cavity (110), the lower end of the second support ring (240) abutting against the upper end of the first support ring (210), and the second support ring (240) and the first support ring (210) being coaxially arranged; A cover plate (250) is detachably connected to the mounting base (100), the cover plate (250) being used to encapsulate an upper port of the mixing chamber (113), and the cover plate (250), the second supporting ring (240) and the second fixing wheel (230) defining the mixing chamber (113).

3. The pulping machine according to claim 2, characterized in that: The first shearing tooth group (200a) and the second shearing tooth group (311) are both provided with a plurality of teeth.

4. The pulping machine according to claim 3, characterized in that: Each group of the first shearing teeth group (200a) includes a plurality of first shearing teeth (200a1), and each group of the second shearing teeth group (311) includes a plurality of second shearing teeth (311a). The plurality of first shearing teeth (200a1) are evenly distributed around the circumference of the corresponding first fixed wheel (220) or the second fixed wheel (230), and the plurality of second shearing teeth (311a) are evenly distributed around the circumference of the dispersion rotor (310).

5. The pulping machine according to claim 4, characterized in that: The mixing turbine group (320) comprises: A first turbine (321) is fixedly connected to the upper end of the first fixed wheel (220), and an annular space (323) is defined between the first turbine (321) and the dispersion main shaft (300); The second turbine (322) is sleeved on the dispersion main shaft (300). The second turbine (322) is accommodated in the annular space (323). The second turbine (322) is provided with a turbulent jet mixing hole (324). The turbulent jet mixing hole (324) connects the shear chamber (112) and the mixing chamber (113).

6. The pulping machine according to claim 5, characterized in that: The first turbine (321) is configured as a slot-type turbine, the second turbine (322) is configured as a conical turbine, and the second turbine (322) is arranged in the slot space of the first turbine (321).

7. The pulping machine according to claim 5, characterized in that: The first turbine (321) is clamped with the upper end of the first fixed wheel (220) by means of a labyrinth seal.

8. The pulping machine according to claim 5, characterized in that: The invention also comprises a grille (400), wherein the grille (400) is detachably connected to the lower end of the cover plate (250), and the grille (400) extends into the space between the first turbine (321) and the second turbine (322).

9. The pulping machine according to claim 1, characterized in that: The scattering impeller (330) is sleeved on the upper end of the dispersion main shaft (300).

10. The pulping machine according to claim 5, characterized in that: Also included is a discharger (500), the discharger (500) comprising: Feeding cylinder (510); A hopper (520) connected to the upper end of the feed barrel (510), the hopper (520) being used to load powder; A material-moving shaft (530) is rotatably arranged on the feeding barrel (510), the material-moving shaft (530) is accommodated in the feeding barrel (510), and a plurality of paddles (531) are arranged on the material-moving shaft (530), and the paddles (531) are used to move the powder material to be transported downward along the feeding barrel (510); A connecting cylinder (251) is provided at the upper end of the cover plate (250), and the connecting cylinder (251) is connected to the mixing chamber (113). The lower end of the feed cylinder (510) is detachably plugged into the connecting cylinder (251), and the feed cylinder (510) is connected to the connecting cylinder (251).

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