Slurrying equipment and slurrying system

Abstract

The utility model belongs to the technical field of chemical equipment, and particularly relates to slurrying equipment and a slurrying system. The first rotary driving part is mounted at the top of the kettle body; the stirring shaft is mounted in the kettle body and is connected with the first rotary driving part; the stirring mechanism is mounted on the stirring shaft, the stirring mechanism comprises a stirring assembly and a dispersing disc which are coaxially distributed in sequence from top to bottom, and the dispersing disc is located at the bottom of the kettle body. In some embodiments, the agitation assembly includes a propeller and a pitched blade turbine paddle. By adopting the slurrying equipment, the stirring efficiency in the kettle body can be improved, materials are fully stirred, a stirring dead zone is eliminated, and the slurrying effect of the materials is optimized.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, specifically relating to a pulping equipment and a pulping system. Background Technology

[0002] In the production of ferric phosphate, the ferric phosphate material tends to clump together severely after being poured out of the washing frame. In existing technologies, the ferric phosphate material poured out of the washing frame is typically subjected to a pulping process to increase the reaction surface area for subsequent reactions.

[0003] However, most existing slurry reactors are equipped with double-layer swirl blades to stir the materials. The double-layer swirl blades do not stir the materials sufficiently, which makes it difficult to disperse some of the materials after unloading, resulting in incomplete slurrying and poor slurrying effect. Furthermore, it causes a stirring dead zone to form at the bottom of the reactor. Utility Model Content

[0004] The purpose of this invention is to provide a slurry equipment and slurry system to fully stir the materials in the reactor and eliminate the dead zone of stirring.

[0005] To achieve the above objectives, this utility model provides a pulping device, which includes:

[0006] The vessel body;

[0007] The first rotary drive component is installed on the top of the vessel body;

[0008] A stirring shaft is installed in the vessel body and connected to the first rotary drive component;

[0009] The stirring mechanism is installed on the stirring shaft. The stirring mechanism includes a stirring component and a dispersing plate arranged coaxially from top to bottom. The dispersing plate is located at the bottom of the vessel.

[0010] In some embodiments, the distance between the dispersing disk and the bottom surface of the vessel body is L3, where L3 is greater than 0.1 times the diameter of the dispersing disk and less than the diameter of the dispersing disk.

[0011] In some embodiments, the mixing assembly includes propellers and inclined blade turbines mounted at different heights.

[0012] In some embodiments, the distance between the propeller and the oblique blade turbine propeller is L1, and the distance between the oblique blade turbine propeller and the dispersion disk is L2. L1 is greater than 0.8 times the diameter of the propeller and less than 1.3 times the diameter of the propeller, and L2 is greater than 0.3 times the diameter of the oblique blade turbine propeller and less than 0.6 times the diameter of the oblique blade turbine propeller.

[0013] In some implementations, each inclined blade turbine blade has serrations on its outer periphery, with the tooth tip angle being greater than 30 degrees and less than or equal to 60 degrees.

[0014] In some embodiments, the dispersion disk is provided with a dispersion tooth assembly, which includes a plurality of dispersion teeth spaced apart circumferentially.

[0015] In some embodiments, the dispersing teeth satisfy at least one of the following conditions: A. The tilt angle between the dispersing teeth and the surface of the dispersing disk is greater than or equal to 30 degrees and less than or equal to 60 degrees; B. There are two sets of dispersing tooth assemblies, with the two sets of dispersing tooth assemblies located on the top and bottom surfaces of the dispersing disk, respectively, and the tilt direction of multiple dispersing teeth in each set of dispersing tooth assemblies is consistent.

[0016] The second aspect of this utility model provides a pulping system, which includes a pre-dispersing device and the aforementioned pulping device.

[0017] In some embodiments, the pre-dispersing device is installed on the feed inlet at the top of the vessel and communicates with the interior of the vessel through the feed inlet.

[0018] In some embodiments, the pre-dispersing device includes: a housing mounted above the feed inlet, with a dispersing inlet and a dispersing outlet respectively provided at the top and bottom of the housing, the dispersing outlet facing the feed inlet; and a first flange assembly mounted between the top of the housing and the vessel body for connecting the housing and the vessel body.

[0019] In the above technical solution, the slurry equipment includes a vessel body, a first rotary drive component, a stirring shaft, and a stirring mechanism. The vessel body is provided with a reaction space for carrying out the slurry reaction. The first rotary drive component is installed on the top of the vessel body and is used to drive the stirring shaft to rotate. The stirring shaft is provided with a stirring mechanism. The dispersion plate in the stirring mechanism is located at the bottom of the stirring shaft. The stirring mechanism can fully stir and evenly disperse the material in the vessel body. The dispersion plate at the bottom of the stirring shaft can evenly disperse the material at the bottom of the vessel body, eliminate the stirring dead zone, and prevent incomplete slurrying after the bottom material settles.

[0020] When the above-mentioned slurry system is used to slurry amorphous ferric phosphate, the material formed by the amorphous ferric phosphate in the reactor is dispersed more evenly, and the slurry effect is better. Then, the slurry is further crystallized, dehydrated and sintered to form anhydrous ferric phosphate containing fewer hard particles.

[0021] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0023] Figure 1 This is a schematic diagram of the pulping system provided according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the dispersion disk structure provided according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the oblique blade turbine propeller provided according to an embodiment of the present utility model;

[0026] Figure 4 This is a structural schematic diagram of the pre-dispersing device provided according to an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached figures

[0028] 10. Kettle body

[0029] 11. Feed Inlet

[0030] 20 First Rotary Drive Component

[0031] 30 stirring shaft

[0032] 41. Propeller

[0033] 42 Inclined-blade turbine propeller

[0034] 43. Serrated edges

[0035] 50 Distributed Plates

[0036] 51 Dispersion teeth

[0037] 60 Pre-dispersing equipment

[0038] 61 Rotation axis

[0039] 62 Second Rotary Drive

[0040] 63 Disintegrating stick

[0041] 64. Outer shell

[0042] 65 First Flange

[0043] 66 Third Flange

[0044] 70 hoppers Detailed Implementation

[0045] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0046] The pulping equipment and pulping system provided according to this utility model are described below with reference to the accompanying drawings, such as... Figure 1 The diagram shown is a structural schematic of a pulping system provided according to an embodiment of the present invention.

[0047] In existing technologies, the production of chemical materials such as ferric phosphate often requires slurry processing to increase the reaction area and accelerate the reaction rate during subsequent reactions, ensuring a more complete reaction. Existing slurry equipment typically uses a double-layer vortex impeller; however, this double-layer vortex impeller results in uneven mixing, the formation of dead zones at the bottom, and incomplete slurry processing.

[0048] The slurry equipment provided in this embodiment of the present invention includes a vessel body 10, a first rotary drive component 20, a stirring shaft 30, and a stirring mechanism. The first rotary drive component 20 is installed on the top of the vessel body 10 and can drive the stirring shaft 30 to rotate. The stirring shaft 30 can drive the stirring mechanism to rotate to stir the material inside the vessel body 10. The stirring mechanism includes a stirring component and a dispersing disk 50 coaxially distributed from top to bottom. The dispersing disk 50 is located at the bottom of the vessel body 10 and can disperse the material at the bottom of the vessel body 10. The stirring component is located above the dispersing disk 50 and can stir the material in the middle and upper parts of the vessel body 10 to make the material evenly stirred and fully slurryed.

[0049] Compared with the prior art's double-layer swirl propeller technology, the slurry equipment provided in this embodiment of the utility model can fully stir the material in the vessel 10. Furthermore, a dispersion disk 50 is provided at the bottom of the vessel 10, which can disperse the material at the bottom of the vessel 10, eliminate the stirring dead zone at the bottom of the vessel 10, and prevent the material from settling at the bottom of the vessel 10, resulting in incomplete slurrying.

[0050] Furthermore, compared to setting different types of agitators on multiple agitator shafts 30, setting different types of agitators on a single agitator shaft 30 is simpler, more effective, less energy-consuming, less costly, and easier to operate.

[0051] In one embodiment, the distance between the dispersing disk 50 and the bottom surface of the vessel body 10 is L3, where L3 is greater than 0.1 times the diameter of the dispersing disk 50 and less than the diameter of the dispersing disk 50. This distance relationship between the dispersing disk 50 and the bottom surface of the vessel body 10 allows the dispersing disk 50 to better agitate the material and prevents material sedimentation at the bottom. Optionally, L3 can be 0.2, 0.3, 0.4, 0.6, 0.8, or 0.9 times the diameter of the dispersing disk 50.

[0052] In one embodiment, the stirring assembly includes a propeller 41 and an inclined blade turbine 42 mounted at different heights. The propeller 41 is an axial-flow impeller agitator, and the inclined blade turbine 42 is a mixed-flow agitator that generates both axial and radial flow. In a specific embodiment, the propeller 41 is positioned above the inclined blade turbine 42. After the material enters the vessel 10, the propeller 41 drives the material within the vessel 10 to form an axial flow. Upon reaching the vicinity of the inclined blade turbine 42, the inclined blade turbine 42 enables the material to generate both axial and radial flow, thus circulating the material within the reactor. Optionally, the inclined blade turbine 42 has at least three blades; preferably, the inclined blade turbine 42 has three blades.

[0053] In one embodiment, the distance between the propeller 41 and the inclined blade turbine 42 is L1, and the distance between the inclined blade turbine 42 and the dispersing disk 50 is L2. L1 is greater than 0.8 times and less than 1.3 times the diameter of the propeller 41, and L2 is greater than 0.3 times and less than 0.6 times the diameter of the inclined blade turbine 42. The aforementioned distance relationship between the propeller 41, the inclined blade turbine 42, and the dispersing disk 50 improves the mixing effect and enhances the dispersion and size uniformity of solid particles in the slurry. Optionally, L1 can be 0.85, 0.9, 1.0, 1.1, 1.2, or 1.25 times the diameter of the propeller 41; and L2 can be 0.35, 0.4, 0.5, or 0.55 times the diameter of the inclined blade turbine 42.

[0054] L1 refers to the vertical distance between the centerline of the propeller 41 and the centerline of the oblique blade turbine propeller 42, L2 refers to the vertical distance between the centerline of the oblique blade turbine propeller 42 and the centerline of the dispersion disk 50, and L3 refers to the vertical distance between the centerline of the oblique blade turbine propeller 42 and the bottom surface of the vessel body 10. The centerlines of the propeller 41, the oblique blade turbine propeller 42, and the dispersion disk 50 refer to the lines along the diameter direction of each component and passing through the center.

[0055] In one embodiment, such as Figure 3The diagram shows a schematic representation of the oblique-blade turbine propeller 42 according to an embodiment of the present invention. Each oblique-blade turbine propeller 42 has serrations 43 on its outer periphery, with the tooth tip angle of the serrations 43 being greater than or equal to 30 degrees and less than or equal to 60 degrees. The serrations 43 on the oblique-blade turbine propeller 42 can disperse materials near the blades, and the tooth tip angle is within the range of 30 degrees to 60 degrees, resulting in a better dispersing effect. Optionally, the tooth tip angle can be 30 degrees, 40 degrees, 50 degrees, or 60 degrees.

[0056] In one embodiment, such as Figure 2 The diagram shown is a schematic representation of the structure of the dispersion disc 50 according to an embodiment of the present invention. The dispersion disc 50 is provided with a dispersion tooth assembly, which enables the material at the bottom of the vessel body 10 to be more fully dispersed.

[0057] In one embodiment, such as Figure 1 As shown, there is one dispersing disc 50, which has concentric holes (not shown in the figure). The inner circumferential wall of the concentric holes is fitted around the outer circumference of the stirring shaft 30. The dispersing disc 50 can disperse the material at the bottom of the vessel 10, preventing the material from caking. However, if the dispersing disc 50 is relatively offset from the center of the vessel 10, it may cause uneven dispersion of the material at the bottom, affecting the quality of the material after the slurry reaction. Therefore, the dispersing disc 50 provided in this embodiment is one, and the dispersing disc 50 has concentric holes. The inner circumference of the concentric holes is fitted around the outer circumference of the stirring shaft 30, which is located on the central axis of the vessel 10. The dispersing disc 50 can evenly disperse the material in all directions.

[0058] In one embodiment, such as Figure 2 As shown, the dispersing tooth assembly includes multiple dispersing teeth 51 arranged circumferentially at intervals. Each dispersing tooth 51 satisfies at least one of the following conditions: A) The inclination angle between the dispersing tooth 51 and the surface of the dispersing disk 50 is greater than or equal to 30 degrees and less than or equal to 60 degrees; B) There are two sets of dispersing tooth assemblies, located on the top and bottom surfaces of the dispersing disk 50 respectively, with the multiple dispersing teeth 51 in each set having the same inclination direction. The inclination angle of the dispersing teeth 51 can affect the flow direction of the material within the vessel body 10. To ensure the material flows in the same direction, each set of dispersing teeth 51 in this invention has the same inclination direction and the same inclination angle. Multiple dispersing teeth 51 within a single dispersing tooth assembly can collectively drive the material to move in the same direction, thereby enhancing the dispersing effect. Furthermore, the inclination angle between the dispersing tooth 51 and the disk surface is greater than 30 degrees and less than 60 degrees, so that the dispersing disk 50 can achieve a better dispersing effect. Optionally, the inclination angle between the dispersing tooth 51 and the disk surface is 35 degrees, 40 degrees, 50 degrees, or 55 degrees.

[0059] In one embodiment, a pulping system is provided, comprising a pre-dispersing device 60 and the pulping device described above. For example... Figure 4 The diagram shown is a structural schematic of the pre-dispersing device 60 provided according to an embodiment of the present invention. The pre-dispersing device 60 is used to pre-disperse materials. When agitating materials with severe agglomeration are agitated, there are problems with difficulty in dispersing and uneven mixing. The slurry system of this application includes the pre-dispersing device 60, which can pre-disperse materials, that is, pre-disperse large agglomerated materials into small pieces before they enter the slurry reactor, so as to facilitate subsequent dispersing and mixing by the agitating device.

[0060] In one embodiment, the pre-dispersing device 60 is installed on the feed inlet 11 at the top of the vessel body 10 and communicates with the interior of the vessel body 10 through the feed inlet 11. Installing the pre-dispersing device 60 on the feed inlet 11 at the top of the vessel body 10 makes it easier for materials to enter the vessel body 10.

[0061] In one embodiment, such as Figure 4 As shown, the pre-dispersing device 60 includes a housing 64 and a first flange assembly. The housing 64 is installed above the feed inlet 11. A dispersing inlet and a dispersing outlet are respectively located at the top and bottom of the housing 64, with the dispersing outlet facing the feed inlet 11. The first flange assembly is installed above the feed inlet 11 and connects the pre-dispersing device 60 to the vessel body 10. When material enters the dispersing inlet of the pre-dispersing device 60, it sequentially passes through the dispersing outlet and the feed inlet 11 into the vessel body 10. This structure ensures a sealed flow of material into the vessel body 10, preventing material leakage.

[0062] In one specific embodiment, the first flange assembly includes a first flange 65 mounted on the outer periphery of the dispersing outlet, a second flange (not shown) mounted on the outer periphery of the feed inlet 11, and a first locking member (not shown). The first locking member can lock the first flange 65 and the second flange to prevent material from overflowing from the connection between the pre-dispersing device 60 and the vessel body 10.

[0063] In one embodiment, the pre-dispersing device 60 includes a rotating shaft 61, a second rotating drive 62, and a plurality of dispersing rods 63. The two ends of the rotating shaft 61 penetrate the outer casing 64. The second rotating drive 62 is connected to the rotating shaft 61, and the plurality of dispersing rods 63 are evenly spaced along the circumference of the rotating shaft 61. The second rotating drive 62 can drive the rotating shaft 61 to rotate, and the plurality of dispersing rods 63 on the rotating shaft 61 can break up large pieces of agglomerated material into smaller pieces, thus pre-dispersing the material before it enters the reactor body 10, improving the dispersing effect and facilitating the slurry reaction.

[0064] In one embodiment, the pulping system further includes a hopper 70, the outlet end of which is connected to a dispersing inlet, and the inlet end of the hopper 70 is used for material feeding.

[0065] In one embodiment, the pulping system further includes a second flange assembly, which includes a third flange 66 mounted on the outer periphery of the dispersing inlet, a fourth flange (not shown) mounted on the outer periphery of the outlet end of the hopper 70, and a second locking member (not shown) capable of locking the third flange 66 and the fourth flange to prevent material from overflowing from the connection between the pre-dispersing device 60 and the hopper 70.

[0066] In one specific embodiment, the slurry system is used to slurry 600mm × 800mm block ferric phosphate material. The pre-dispersing device 60 can disperse the block ferric phosphate to facilitate the stirring mechanism's stirring and dispersing of the material. The slurry equipment includes a first rotary drive 20, a stirring shaft 30, a propeller 41, an inclined blade turbine propeller 42, and a dispersing disk 50. The inclined blade turbine propeller 42 is a three-bladed turbine propeller with three inclined blade sections. Each inclined blade section has multiple continuously arranged serrations 43, the size of which is 20mm-50mm. The dispersion disk 50 is located at the bottom of the stirring shaft 30. The diameter of the dispersion disk 50 is 500mm-800mm. Two sets of dispersion tooth assemblies are provided on the dispersion disk 50. Each set of dispersion tooth assemblies includes multiple dispersion teeth 51 arranged at intervals along the axial direction. The width of the dispersion teeth 51 is 50mm-100mm, the height of the dispersion teeth 51 is 40mm-80mm, and the distance between adjacent dispersion teeth 51 is 20mm-50mm. Within this size range, the dispersion effect of the dispersion disk 50 is optimal.

[0067] Example 1: A pulping system includes: a pre-dispersing device 60 and a pulping device.

[0068] The pre-dispersing device 60 is installed on the feed inlet 11 at the top of the vessel body 10. The pre-dispersing device 60 includes: a housing 64 and a first flange assembly; the housing 64 is installed above the feed inlet 11, and the top and bottom ends of the housing 64 are respectively provided with a dispersing inlet and a dispersing outlet, with the dispersing outlet facing the feed inlet 11; the first flange assembly is installed between the housing 64 and the top of the vessel body 10 and is used to connect the housing 64 and the vessel body 10.

[0069] The slurry processing equipment includes: a vessel body 10, a first rotary drive component 20, a stirring shaft 30, and a stirring mechanism. The first rotary drive component 20 is installed on the top of the vessel body 10; the stirring shaft 30 is installed in the vessel body 10 and connected to the first rotary drive component 20; the stirring mechanism is installed on the stirring shaft 30, and the stirring mechanism includes a propeller 41, an inclined blade turbine propeller 42, and a dispersion disk 50 arranged coaxially from top to bottom. Specifically, the inclined blade turbine propeller 42 is provided with three inclined blade sections.

[0070] The diameter of the propeller 41 is 110mm, the diameter of the inclined blade turbine propeller 42 is 110mm, the diameter of the dispersion disk 50 is 50mm, the distance L1 between the propeller 41 and the inclined blade turbine propeller 42 is 140mm, the distance L2 between the inclined blade turbine propeller 42 and the dispersion disk 50 is 40mm, and the distance L3 between the dispersion disk 50 and the bottom surface of the vessel body 10 is 10mm.

[0071] The outer periphery of the oblique blade turbine propeller 42 is provided with serrations 43, and the tooth tip angle of the serrations 43 is 45 degrees.

[0072] Two sets of dispersion tooth assemblies are provided on the dispersion disk 50, and the two sets of dispersion tooth assemblies are located on the top surface and bottom surface of the dispersion disk 50, respectively; each set of dispersion tooth assemblies includes multiple dispersion teeth 51 arranged at intervals along the circumference; the dispersion teeth 51 are inclined in the same direction, and the inclination angle between them and the disk surface of the dispersion disk 50 is 45 degrees.

[0073] Example 2: Compared with Example 1, the difference in Example 2 is that a pre-dispersing device is not installed at the upper end of the feed inlet 11 of the pulping equipment.

[0074] Compared with Example 1, Comparative Example 1 in the prior art does not have a dispersion disc 50 similar to that in Example 1 in the pulping equipment.

[0075] Compared with Example 1, Comparative Example 2 differs in the position and number of the dispersing discs. In Comparative Example 2, the two dispersing discs are installed on the stirring shaft outside the center line of the vessel body. Specifically, the distance between each dispersing disc and the bottom of the vessel body is half the height of the vessel body, and the distance between each dispersing disc and the center line of the vessel body is half the diameter of the vessel body.

[0076] In one specific embodiment, a method for testing the content of hard particles is provided: 1 kg of sample is passed through a 200-mesh water sieve to obtain the first sieve oversize and the first sieve undersize. Then, the first sieve oversize is sonicated for 60 min and passed through a 200-mesh water sieve to obtain the second sieve oversize. Finally, the second sieve oversize is dried and weighed. The weight of the second sieve oversize is the weight of the hard particles.

[0077] Table 1. Content of hard particles in anhydrous ferric phosphate

[0078] Content of hard particles in ferric phosphate (wt.%) Example 1 0.1 Example 2 1 Comparative Example 1 10 Comparative Example 2 5

[0079] The number and installation position of the dispersion discs 50 affect the slurrying effect of amorphous ferric phosphate, thus affecting the crystal transformation process of amorphous ferric phosphate. Materials with incomplete crystal transformation are prone to forming hard particles after sintering.

[0080] As can be seen from the data in Table 1, in this embodiment, the dispersion disk 50 is installed on the stirring shaft 30 on the center line of the vessel 10 and located at the bottom of the vessel 10. Its slurrying effect is good, resulting in a low content of hard particles in the anhydrous ferric phosphate product formed subsequently through crystallization (or aging) and calcination. Specifically, the content of hard particles is below 1 wt.%. In Comparative Example 2, the dispersion disk 50 is installed on the stirring shaft 30 outside the center line of the vessel 10, resulting in a poor slurrying effect and an increased content of hard particles in the anhydrous ferric phosphate. In Comparative Example 1, the dispersion disk 50 was not used, resulting in a very poor slurrying effect and a hard particle content as high as 10% in the anhydrous ferric phosphate.

[0081] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pulping device, characterized in that, The pulping equipment includes: The vessel body (10); The first rotary drive component (20) is installed on the top of the vessel body (10); A stirring shaft (30) is installed in the vessel body (10) and connected to the first rotary drive (20); A stirring mechanism is installed on the stirring shaft (30). The stirring mechanism includes a stirring component and a dispersing disk (50) arranged coaxially from top to bottom. The dispersing disk (50) is located at the bottom of the vessel body (10).

2. The pulping equipment according to claim 1, characterized in that, The distance between the dispersion disk (50) and the bottom surface of the vessel body (10) is L3, which is greater than 0.1 times the diameter of the dispersion disk (50) and less than the diameter of the dispersion disk (50).

3. The pulping equipment according to claim 1 or 2, characterized in that, The stirring assembly includes a propeller (41) and a slanted blade turbine (42) mounted at different heights.

4. The pulping equipment according to claim 3, characterized in that, The distance between the propeller (41) and the oblique blade turbine propeller (42) is L1, and the distance between the oblique blade turbine propeller (42) and the dispersion disk (50) is L2. Wherein, L1 is greater than 0.8 times the diameter of the propeller (41) and less than 1.3 times the diameter of the propeller (41), and L2 is greater than 0.3 times the diameter of the oblique blade turbine propeller (42) and less than 0.6 times the diameter of the oblique blade turbine propeller (42).

5. The pulping equipment according to claim 4, characterized in that, Each of the oblique blade turbine propellers (42) has serrations (43) on its outer periphery, the tooth tip angle of which is greater than or equal to 30 degrees and less than or equal to 60 degrees.

6. The pulping equipment according to claim 1 or 2, characterized in that, The dispersion disk (50) is provided with a dispersion tooth assembly, which includes a plurality of dispersion teeth (51) arranged at intervals along the circumference.

7. The pulping equipment according to claim 6, characterized in that, The dispersion tooth (51) satisfies at least one of the following conditions: A. The inclination angle between the dispersing tooth (51) and the surface of the dispersing disk (50) is greater than or equal to 30 degrees and less than or equal to 60 degrees; B. The number of the dispersion tooth assembly is two sets, and the two sets of dispersion tooth assemblies are located on the top and bottom surfaces of the dispersion disk (50) respectively. The multiple dispersion teeth (51) in each set of dispersion tooth assemblies have the same inclination direction.

8. A pulping system, characterized in that, The pulping system includes: a pre-dispersing device (60) and a pulping device according to any one of claims 1 to 7.

9. The pulping system according to claim 8, characterized in that, The pre-dispersing device (60) is installed on the feed inlet (11) at the top of the vessel body (10) and communicates with the interior of the vessel body (10) through the feed inlet (11).

10. The pulping system according to claim 9, characterized in that, The pre-dispersing device (60) includes: The outer shell (64) is installed above the feed inlet (11). The top and bottom ends of the outer shell (64) are respectively provided with a dispersing inlet and a dispersing outlet, and the dispersing outlet faces the feed inlet (11). A first flange assembly is installed between the top of the housing (64) and the vessel body (10) and is used to connect the housing (64) and the vessel body (10).

Images