pulping equipment

Abstract

The present application provides a pulping device, which includes a circulation tank, a guide tube and a dispersion structure. The circulation tank is used to accommodate slurry. The guide tube is arranged inside the circulation tank, and a receiving cavity is formed inside the guide tube. The outer wall of the guide tube and the inner wall of the circulation tank are spaced apart to form a flow guide channel. The dispersion structure is at least partially located between the bottom of the guide tube and the bottom wall of the circulation tank. The dispersion structure has an inlet and an outlet. The inlet is located on the side of the dispersion structure close to the bottom of the guide tube and is connected to the receiving cavity. The outlet is located on the peripheral side of the dispersion structure and is connected to the flow guide channel. The dispersion structure is used to disperse the slurry. In this way, the pulping equipment can disperse and circulate the slurry inside the circulation tank, thereby simplifying the structure of the pulping equipment, making the structure of the pulping equipment more compact, reducing manufacturing costs, and eliminating the need to set up additional pipelines, which greatly reduces the difficulty of cleaning the pulping equipment.

Description

Technical Field

[0001] The present application relates to the field of pulping technology, and in particular to a pulping device. Background Art

[0002] In traditional pulping equipment, solid and liquid materials are mixed in a circulation tank to form a slurry. This slurry then needs to be introduced into an external disperser for dispersion. In traditional pulping equipment, the circulation tank is equipped with a liquid outlet pipe and a return pipe. The disperser draws the slurry from the circulation tank through the liquid outlet pipe, disperses the slurry, and then returns it to the circulation tank through the return pipe. This results in a complex structure and high manufacturing costs. Summary of the Invention

[0003] The present application provides a pulping device to solve the problems of complex structure and high manufacturing cost of the pulping device.

[0004] The present application provides a pulping device, which includes a circulation tank, a guide tube and a dispersion structure. The circulation tank is used to accommodate slurry. The guide tube is arranged inside the circulation tank, and a receiving cavity is formed in the guide tube. The outer wall of the guide tube and the inner wall of the circulation tank are spaced apart to form a guide channel. The dispersion structure is at least partially located between the bottom of the guide tube and the bottom wall of the circulation tank. The dispersion structure has an inlet and an outlet. The inlet is located on the side of the dispersion structure close to the bottom of the guide tube and is connected to the receiving cavity. The outlet is located on the peripheral side of the dispersion structure and is connected to the guide channel. The dispersion structure is used to disperse the slurry.

[0005] In some embodiments, the diversion channel includes a first flow channel and a second flow channel connected to the first flow channel, the circulation tank includes a bottom wall and a side wall, the side wall is arranged in a ring shape, the bottom wall and the side wall together form a circulation cavity, the diversion tube is located in the circulation cavity, the diversion tube includes a bottom plate and a side plate, the bottom plate is connected to the end of the side plate close to the bottom wall of the circulation tank, the side plate is arranged in a ring shape, the side plate and the bottom plate together form the receiving cavity, the bottom plate and the bottom wall form the first flow channel, the side plate and the side wall form the second flow channel, and the inlet is connected to the receiving cavity.

[0006] In some embodiments, a cross-sectional area of the second flow channel near a top of the circulation tank is smaller than or equal to a cross-sectional area near a bottom of the circulation tank.

[0007] In some embodiments, a first distance between the bottom plate and the bottom wall is less than or equal to a second distance between the side plate and the side wall.

[0008] In some embodiments, the side panels are inclined or curved relative to the bottom panel toward the side walls of the circulation tank.

[0009] In some embodiments, a ratio of a distance between an end of the side plate away from the bottom plate and the bottom wall of the circulation tank to a distance between a liquid surface of the slurry and the bottom wall of the circulation tank is 0.8-3.

[0010] In some embodiments, the ratio of the diameter of the draft tube to the diameter of the circulation tank is 0.4-0.98.

[0011] In some embodiments, at least one of the outer wall of the guide cylinder and the inner wall of the circulation tank is provided with a guide structure, and the guide structure extends in a spiral shape.

[0012] In some embodiments, the dispersed structure includes a stator and a rotor, the stator is fixed relative to the circulation tank, and the rotor and the stator can rotate relative to each other, the stator includes a stator disk and at least one layer of stator retaining rings arranged on the stator disk, and the stator retaining rings are provided with stator slots, the rotor includes a rotor disk and at least one layer of rotor retaining rings arranged on the rotor disk, and the rotor retaining rings are provided with rotor slots, and the rotor retaining rings are located on the inner side and / or outer side of the stator retaining rings, the stator disk is provided with the inlet, and the stator slot or the rotor slot located at the outermost side of the dispersed structure is configured as the outflow outlet.

[0013] In some embodiments, the stator is fixed relative to the circulation tank, the guide tube is fixed relative to the stator, or the guide tube is fixed relative to the rotor.

[0014] In some embodiments, the dispersion structure further includes a pusher blade, which is disposed on the rotor disk and located on the inner side of the rotor retaining ring at the innermost side of the dispersion structure, and is used to push the slurry along the radial direction of the rotor disk.

[0015] In some embodiments, the pulping equipment also includes a baffle, which is arranged on the side wall of the circulation tank and is located on the side of the guide tube away from the bottom of the circulation tank. The baffle is extended along the radial direction of the circulation tank. On a plane perpendicular to the central axis of the circulation tank, the orthographic projection of the baffle at least partially covers the outlet of the guide channel close to the top side of the circulation tank.

[0016] In some embodiments, at least one of two surfaces of the baffle facing each other in the axial direction of the circulation tank is inclined or curved toward the bottom of the circulation tank.

[0017] In some embodiments, the baffle includes multiple first plates and multiple second plates, the second plates are located on the side of the first plate away from the bottom wall of the circulation tank, and the multiple first plates and the multiple second plates are alternately arranged along the circumferential direction of the circulation tank.

[0018] In some embodiments, the pulping equipment further includes a stirring structure, which extends into the receiving cavity and is used to stir the slurry.

[0019] In some embodiments, the pulping equipment further includes a heat dissipation structure, which extends into the receiving cavity and is used to dissipate heat from the slurry.

[0020] In the pulping equipment provided in the present application, a guide channel is formed between the outer wall of the guide tube and the inner wall of the circulation tank, and the dispersion structure is at least partially located between the bottom of the guide tube and the bottom wall of the circulation tank. The dispersion structure is used to suck the slurry from the receiving cavity through the inlet, and after dispersing the slurry, discharge the slurry into the guide channel through the outlet. Compared with the traditional pulping equipment in which the dispersion structure is set outside the circulation tank and connected to the circulation tank through a pipeline, the pulping equipment can disperse and circulate the slurry inside the circulation tank, thereby simplifying the structure of the pulping equipment, making the structure of the pulping equipment more compact, reducing manufacturing costs, and no additional pipelines are required, which greatly reduces the difficulty of cleaning the pulping equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 It is a cross-sectional view of the pulping equipment provided in the embodiment of the present application.

[0023] Figure 2 is a cross-sectional view of a pulping device provided in some embodiments of the present application.

[0024] Figure 3 Schematic diagram of the structure of the guide tube provided in some embodiments of the present application.

[0025] Figure 4 It is a cross-sectional view of the pulping equipment provided in other embodiments of the present application.

[0026] Figure 5 It is a cross-sectional view of the pulping equipment provided in other embodiments of the present application.

[0027] Figure 6 It is a cross-sectional view of the pulping equipment provided in other embodiments of the present application.

[0028] Figure 7 It is a cross-sectional view of the pulping equipment provided in other embodiments of the present application.

[0029] Figure 8 It is a cross-sectional view of the dispersed structure provided in the embodiment of the present application.

[0030] Figure 9 It is a structural schematic diagram of the stator and rotor provided in an embodiment of the present application.

[0031] Description of the main reference numerals: pulping equipment 100; circulation tank 10; circulation chamber 101; top 102; bottom 103; top cover 11; side wall 12; bottom wall 13; discharge port 131; central axis C1; guide cylinder 20; receiving chamber 201; guide channel 202; first flow channel 2021; second flow channel 2022; side plate 21; bottom plate 22; connecting hole 221; extension plate 23; guide structure 24; baffle 25; first plate body 251; second plate body 252; dispersion structure 30; inlet 301; outlet 302 02; stator 31; stator disk 311; stator retaining ring 312; stator slot 3121; rotor 32; rotor disk 321; rotor retaining ring 322; rotor slot 3221; pusher blade 323; mounting base 324; first base body 3241; second base body 3242; connector 3243; connecting hole 3244; air guide cover 33; drive shaft 34; driver 35; stirring structure 40; rotating shaft 41; stirring blade 42; heat dissipation structure 50; fin 514; cooling jacket 60; first width D1; second width D2.

[0032] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments in this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] References herein to "embodiments" or "implementations" mean that a particular feature, structure, or characteristic described in connection with the embodiments or implementations may be included in at least one embodiment of the present application. The appearance of such phrases in various places in the specification does not necessarily refer to the same embodiment, nor do they constitute independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] It should be noted that the terms in the specification and claims of this application and the above-mentioned drawings are intended only to describe specific embodiments and are not intended to limit this application. The terms "first," "second," and so on in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, not to describe a specific order. The term "and / or" as used in this application refers to any and all possible combinations of one or more of the associated listed items, including and including these combinations.

[0036] See also Figure 1 , Figure 1 It is a cross-sectional view of the pulping equipment 100 provided in an embodiment of the present application. The pulping equipment 100 includes a circulation tank 10, a guide tube 20 and a dispersion structure 30. The circulation tank 10 is used to accommodate slurry. The circulation tank 10 includes a side wall 12 and a bottom wall 13. The side wall 12 is fixedly connected to the bottom wall 13. The side wall 12 and the bottom wall 13 enclose a circulation chamber 101. The guide tube 20 is arranged inside the circulation tank 10. A receiving chamber 201 is formed in the guide tube 20. A guide channel 202 is formed between the outer wall of the guide tube 20 and the inner wall of the circulation tank 10. The dispersion structure 30 is at least partially located between the bottom of the guide tube 20 and the bottom wall 13 of the circulation tank 10. The dispersion structure 30 has an inlet 301 and an outlet 302. The inlet 301 is located on one side of the dispersion structure 30 close to the bottom of the guide tube 20 and is communicated with the receiving chamber 201. The outlet 302 is located around the dispersion structure 30 and communicates with the flow channel 202. The dispersion structure 30 is used to draw slurry from the receiving chamber 201 through the inlet 301 and discharge the slurry into the flow channel 202 through the outlet 302 after dispersing the slurry.

[0037] Compared with the traditional pulping equipment in which the dispersion structure is set outside the circulation tank and connected to the circulation tank through a pipeline, in the embodiment of the present application, the pulping equipment 100 is provided with a guide tube 20 and a dispersion structure 30, so that the slurry is dispersed and circulated inside the circulation tank 10, thereby simplifying the structure of the pulping equipment 100, making the structure of the pulping equipment 100 more compact, reducing the manufacturing cost, and no additional pipeline is required, which greatly reduces the difficulty of cleaning the pulping equipment 100.

[0038] The pulping apparatus 100 also includes a top cover 11. The circulation tank 10 includes a top 102 and a bottom 103 disposed opposite each other along a central axis C1. After the pulping apparatus 100 is installed, the top 102 of the circulation tank 10 is located on the side of the bottom 103 away from the ground. The top cover 11 is disposed on the top 102 of the circulation tank 10.

[0039] The dispersion structure 30 is used to suck the slurry along the axial direction of the circulation tank 10 and discharge the slurry along the radial direction of the circulation tank 10. In this way, the change range of the inflow direction and the outflow direction of the slurry is less than or equal to 90°, and the turning of the slurry is less obstructed, which is conducive to the dispersion structure 30 to accelerate the slurry, increase the outflow speed of the slurry, and promote the circulation of the slurry in the circulation tank 10. The slurry flows from the central axis C1 of the circulation tank 10 toward the side wall 12 in the guide channel 202, flows upward from the bottom 103 to the top 102, and flows downward from the top 102 to the bottom 103 in the direction of the central axis C1 of the circulation tank 10 and its vicinity, thereby forming a circulating flow in the circulation tank 10. Exemplarily, the bottom wall 13 can be arranged in an arc shape. The bottom wall 13 is bent toward the top 102 to guide the slurry, thereby reducing the flow rate loss of the slurry. The connection between the bottom wall 13 and the side wall 12 is provided with an arc transition, which is beneficial to reducing the flow velocity loss of the slurry at the connection between the bottom wall 13 and the side wall 12, and improving the circulation speed of the slurry in the circulation tank 10. In some embodiments, the bottom wall 13 can be provided with a flat bottom. In some embodiments, a discharge port 131 connected to the guide channel 202 is provided on the bottom wall 13. The discharge port 131 is provided near the position of the dispersion structure 30 to increase the discharge speed of the slurry from the discharge port 131 and improve the discharge efficiency. Among them, the axial direction of the circulation tank 10 is parallel to the central axis C1, the radial direction of the circulation tank 10 is perpendicular to the central axis C1, and the circumferential direction of the circulation tank 10 is perpendicular to the central axis C1 and surrounds the central axis C1.

[0040] The guide tube 20 is located in the circulation chamber 101. The guide tube 20 includes a side plate 21 and a bottom plate 22. The bottom plate 22 is connected to the end of the side plate 21 close to the bottom wall 13 of the circulation tank 10. The side plate 21 is arranged in a ring shape. The side plate 21 and the bottom plate 22 enclose a receiving chamber 201. The guide channel 202 includes a first flow channel 2021 and a second flow channel 2022 connected to the first flow channel 2021. The bottom plate 22 and the bottom wall 13 of the circulation tank 10 form the first flow channel 2021. The side plate 21 and the side wall 12 of the circulation tank 10 form the second flow channel 2022. A connecting hole 221 is provided at the bottom of the guide tube 20, and the inlet 301 is connected to the receiving chamber 201 through the connecting hole 221. The connecting hole 221 is provided on the bottom plate 22. For example, the connection between the side panels 21 and the bottom panel 22 is configured as an arc transition to reduce or prevent slurry from accumulating at and near the connection between the side panels 21 and the bottom panel 22. The bottom panel 22 may be configured in an arc shape, and the bottom panel 22 may be curved toward the top 102 to facilitate the slurry to flow toward the dispersion structure 30 under the action of gravity and the suction of the dispersion structure 30.

[0041] In this embodiment, the side plate 21 of the guide tube 20 and the side wall 12 of the circulation tank 10 are both cylindrical and coaxially arranged. The central axis of the guide tube 20 is collinear with the central axis of the circulation tank 10. The first flow channel 2021 extends in an arc-shaped curve. The second flow channel 2022 extends along the axial direction of the circulation tank 10. The cross-sectional area of the second flow channel 2022 at the position close to the top 102 of the circulation tank 10 is equal to the cross-sectional area of the second flow channel 2022 at the position close to the bottom 103 of the circulation tank 10. Among them, the curved shapes of the bottom plate 22 and the bottom wall 13 can be set to be the same. Along the extension direction of the first flow channel 2021, the first flow channel 2021 is set with equal width.

[0042] See also Figure 2 In some embodiments, the cross-sectional area of the second flow channel 2022 at a position close to the top 102 of the circulation tank 10 is smaller than the cross-sectional area of the second flow channel 2022 at a position close to the bottom 103 of the circulation tank 10. The flow area of the second flow channel 2022 decreases in the direction from the bottom 103 of the circulation tank 10 toward the top 102, so that when the slurry flows in the second flow channel 2022, the flow velocity of the slurry increases, thereby improving the circulation effect. Exemplarily, the side plate 21 of the guide tube 20 is inclined relative to the bottom plate 22 toward the side wall 12 of the circulation tank 10. The flow area of the second flow channel 2022 can decrease in a linear relationship. In some embodiments, the side plate 21 of the guide tube 20 is bent relative to the bottom plate 22 toward the side wall 12 of the circulation tank 10. The flow area of the second flow channel 2022 can decrease in a nonlinear relationship.

[0043] See also Figure 1In this embodiment, the first distance D1 between the bottom plate 22 and the bottom wall 13 of the circulation tank 10 is equal to the second distance D2 between the side plate 21 and the side wall 12 of the circulation tank 10. The width of the first flow channel 2021 is equal to the width of the second flow channel 2022. In this way, it is beneficial for the slurry to flow out of the first flow channel 2021 and the second flow channel 2022 quickly, thereby improving the circulation speed of the slurry. In some embodiments, the first distance D1 between the bottom plate 22 and the bottom wall 13 of the circulation tank 10 is smaller than the second distance D2 between the side plate 21 and the side wall 12 of the circulation tank 10. The width of the first flow channel 2021 is smaller than the width of the second flow channel 2022, so that the slurry has a greater flow rate in the first flow channel 2021, thereby avoiding the accumulation of slurry in the first flow channel 2021. The specific values of the first distance D1 and the second distance D2 can be set according to actual needs, and this application does not make specific limitations.

[0044] The ratio of the diameter of the guide tube 20 to the diameter of the circulation tank 10 is 0.4-0.98. In this way, the slurry in the second flow channel 2022 and the slurry in the receiving chamber 201 can be fully circulated, so that the dispersion structure 30 can fully disperse the slurry and improve the quality of the slurry. Among them, when the ratio of the diameter of the guide tube 20 to the diameter of the circulation tank 10 is less than 0.4, the cross-sectional area at the outlet of the second flow channel 2022 is large, and the flow rate of the slurry in the second flow channel 2022 is low, which easily causes part of the slurry to be retained in the second flow channel 2022, thereby causing part of the slurry to be unable to be fully dispersed, resulting in a decrease in the quality of the slurry. When the ratio of the diameter of the guide tube 20 to the diameter of the circulation tank 10 is greater than 0.98, the flow rate of the slurry in the guide tube 20 is low, and the slurry is easily retained in the guide tube 20, making it easy for slurry to accumulate on the bottom plate 22, resulting in insufficient dispersion and circulation of the slurry, which causes a decrease in the quality of the slurry. The ratio of the diameter of the draft tube 20 to the diameter of the circulation tank 10 can be specifically set according to actual needs and is not specifically limited in this application. For example, the ratio of the diameter of the draft tube 20 to the diameter of the circulation tank 10 can be 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.98, etc. Among them, the diameter of the draft tube 20 can refer to the inner diameter of the draft tube 20, and the diameter of the circulation tank 10 can refer to the inner diameter of the circulation tank 10. In some embodiments, the diameter of the draft tube 20 can refer to the outer diameter of the draft tube 20, and the diameter of the circulation tank 10 can refer to the outer diameter of the circulation tank 10.

[0045] It is understood that, since the slurry has an upward flow tendency when flowing out of the diversion channel 202, a height difference is formed between the liquid level of the slurry at the outlet of the diversion channel 202 and the liquid level of the slurry in the receiving chamber 201. In this embodiment, the ratio of the distance between the end of the side plate 21 away from the bottom plate 22 and the bottom wall 13 of the circulation tank 10 to the distance between the liquid level of the slurry and the bottom wall 13 of the circulation tank 10 is 0.8-3. In this way, the height difference formed by the slurry on the liquid surface is within an appropriate range. On the one hand, it is conducive to accelerating the slurry to flow back from the guide channel 202 to the receiving chamber 201, promoting the circulation of the slurry in the circulation tank 10. On the other hand, it can prevent the slurry from splashing on the liquid surface, prevent the slurry from splashing onto the side wall 12 of the circulation tank 10, and prevent air from mixing into the slurry to form bubbles. On the other hand, it is conducive to preventing the slurry from accumulating in the guide channel 202 and allowing the slurry flowing out of the guide channel 202 to cover the original slurry in the receiving chamber 201, thereby pushing the slurry in the receiving chamber 201 to flow toward the dispersion structure 30, so that the slurry in the receiving chamber 201 can all enter the dispersion structure 30, thereby improving the dispersion effect of the slurry and improving the quality of the slurry. Among them, the liquid level of the slurry can be the liquid level formed when the slurry contained in the circulation tank 10 is within the rated capacity range of the circulation tank 10. The distance between the bottom wall 13 of the circulation tank 10 and the liquid level of the slurry refers to the distance along the axial direction of the circulation tank 10 between the position of the bottom wall 13 close to the dispersion structure 30 and the liquid level when the slurry in the circulation tank 10 is in a stationary state. The distance between the end of the side plate 21 away from the bottom plate 22 and the bottom wall 13 of the circulation tank 10 refers to the distance between the end of the side plate 21 away from the bottom plate 22 and the position of the bottom wall 13 of the circulation tank 10 close to the dispersion structure 30. The ratio of the distance between the end of the side plate 21 away from the bottom plate 22 and the bottom wall 13 of the circulation tank 10 to the distance between the liquid level of the slurry and the bottom wall 13 of the circulation tank 10 can be specifically set according to actual needs and is not specifically limited in this application. Illustratively, the ratio of the distance between the end of the side plate 21 away from the bottom plate 22 and the bottom wall 13 of the circulation tank 10 to the distance between the liquid level of the slurry and the bottom wall 13 of the circulation tank 10 can be 0.8, 0.9, 1, 1.2, 1.4, 1.5, 1.6, 1.8, 2, 2.2, 2.4, 2.5, 2.6, 2.8, 3, etc.

[0046] In some embodiments, the end of the side plate 21 away from the bottom plate 22 can be located on the side of the slurry liquid surface away from the bottom wall 13 of the circulation tank 10. That is, the end of the side plate 21 away from the bottom plate 22 is located above the liquid surface. The volume of the slurry in the receiving chamber 201 is greater than half the volume of the diversion channel 202, so that the slurry in the diversion channel 202 can flow back into the receiving chamber 201 in a timely manner, preventing the dispersion structure 30 from inhaling gas.

[0047] Please also refer to Figure 1 and Figure 3 In some embodiments, at least one of the outer wall of the guide tube 20 and the inner wall of the circulation tank 10 is provided with a guide structure 24. The guide structure 24 is provided to extend in a spiral shape. When the slurry flows along the guide channel 202, the guide structure 24 is used to guide the slurry so that the slurry flows in a spiral direction along the circumferential direction of the circulation tank 10, so that when the slurry flows out from the outlet of the second flow channel 2022, the flow direction of the slurry forms an acute angle with the axial direction of the circulation tank 10, thereby reducing the surging of the slurry at the liquid surface, reducing or preventing the slurry from adhering to the side wall 12 of the circulation tank 10, allowing the slurry to be fully circulated and dispersed, and improving the accuracy of the slurry ratio.

[0048] The flow-guiding structure 24 can be constructed as a spiral protrusion and / or a spiral groove. Among them, the flow-guiding structure 24 can be constructed as a spiral protrusion. The spiral protrusion can also improve the structural strength of the flow-guiding tube 20 and / or the circulation tank 10, and avoid deformation of the flow-guiding tube 20 and / or the circulation tank 10. In some embodiments, the flow-guiding structure 24 can be constructed as a spiral groove. In some embodiments, the flow-guiding structure 24 can be constructed as a combination of a spiral protrusion and a spiral groove, for example, the flow-guiding structure 24 includes a plurality of flow-guiding structures 24, wherein a part of the flow-guiding structure 24 is constructed as a spiral protrusion, and another part of the flow-guiding structure 24 is constructed as a spiral groove.

[0049] For example, the flow guide structure 24 can be provided on the side of the side plate 21 of the flow guide cylinder 20 facing the side wall 12 of the circulation tank 10. In some embodiments, the flow guide structure 24 can also be provided on the side of the bottom plate 22 of the flow guide cylinder 20 facing the bottom wall 13 of the circulation tank 10. In some embodiments, the flow guide structure 24 can also be provided on the side wall 12 or the bottom wall 13 of the circulation tank 10.

[0050] See also Figure 4 In some embodiments, the pulping equipment 100 further includes a baffle 25. The baffle 25 is provided on the side wall 12 of the circulation tank 10 and is located on the side of the guide tube 20 away from the bottom 103 of the circulation tank 10. The baffle 25 is extended along the radial direction of the circulation tank 10. On a plane perpendicular to the central axis C1 of the circulation tank 10, the orthographic projection of the baffle 25 at least partially covers the outlet of the guide channel 202 on the side close to the top 102 of the circulation tank 10. The baffle 25 is used to block the slurry overflowing from the outlet of the guide channel 202 to prevent the slurry from splashing onto the side wall 12 of the circulation tank 10, so that the slurry can be fully circulated and dispersed, the accuracy of the slurry ratio can be improved, and the air can be prevented from being drawn into the slurry after the slurry splashes. Exemplarily, the baffle 25 can be located above the liquid surface of the slurry.

[0051] In some embodiments, at least one of the two surfaces of the baffle 25 facing away from each other along the axial direction of the circulation tank 10 is tilted or bent toward the bottom 103 of the circulation tank 10, so that the slurry falling on the baffle 25 can slide down into the guide tube 20 under the action of gravity, thereby preventing the slurry from accumulating on the baffle 25. The baffle 25 can be tilted or bent relative to the side wall 12 toward the bottom 103 of the circulation tank 10. The extension length of the baffle 25 along the radial direction of the circulation tank 10 is greater than or equal to the width of the outlet of the guide channel 202 near the top 102 side along the radial direction of the circulation tank 10, so that the slurry can slide from the baffle 25 into the receiving chamber 201. In some embodiments, the two surfaces of the baffle 25 facing away from each other along the axial direction of the circulation tank 10 can also be arranged in a plane to reduce the difficulty of processing the baffle 25.

[0052] In some embodiments, a single baffle 25 can be provided. The baffle 25 can be arranged in an annular shape, with the orthographic projection of the baffle 25 covering the outlet of the diversion channel 202 near the top 102 of the circulation tank 10 on a plane perpendicular to the central axis C1 of the circulation tank 10. In some embodiments, a plurality of baffles 25 can be provided, and the plurality of baffles 25 can be arranged along the circumference of the circulation tank 10.

[0053] See also Figure 5 In some embodiments, the baffle 25 includes a plurality of first plates 251 and a plurality of second plates 252. The second plate 252 is located on the side of the first plate 251 away from the bottom wall 13 of the circulation tank 10. The plurality of first plates 251 and the plurality of second plates 252 are alternately arranged along the circumferential direction of the circulation tank 10. On a plane perpendicular to the central axis C1 of the circulation tank 10, the orthographic projections of the plurality of first plates 251 and the orthographic projections of the plurality of second plates 252 overlap to form a complete ring. In this way, it is possible to effectively avoid blocking the overflowing slurry and prevent the slurry from splashing onto the side wall of the circulation tank 10. When cleaning the circulation tank 10, it is helpful to remove the slurry remaining at the connection between the first plate 251 and the side wall 12 and at the connection between the second plate 252 and the side wall 12, thereby improving the cleaning efficiency.

[0054] See also Figure 6In some embodiments, an extension plate 23 is provided on the inner wall of the guide tube 20. The extension plate 23 extends in the radial direction of the guide tube 20. The extension plate 23 can be connected to the side plate 21 and / or the bottom plate 22. For example, the extension plate 23 is fixedly connected to the side plate 21. A plurality of extension plates 23 are provided. The plurality of extension plates 23 are arranged at intervals along the axial direction of the guide tube 20. The plurality of extension plates 23 are also arranged at intervals along the circumferential direction of the guide tube 20. The plurality of extension plates 23 can include a plurality of rows of extension plates 23 arranged at intervals along the circumferential direction of the guide tube 20. The plurality of rows of extension plates 23 can be arranged at equal intervals or at unequal intervals. Each row of extension plates 23 includes a plurality of extension plates 23, and the plurality of extension plates 23 in each row are arranged at intervals along the axial direction of the guide tube 20. The plurality of extension plates 23 in each row can be arranged at equal intervals or at unequal intervals. The number of the extension plates 23 can be set according to actual needs and is not specifically limited in this application. For example, the number of the extension plates 23 can be set to 4, 6, 8, 9, 12, etc.

[0055] The extension plate 23 is used to straighten the slurry flowing into the guide tube 20, ensuring that the slurry at all locations within the guide tube 20 flows toward the dispersion structure 30. This prevents the formation of stagnant areas within the guide tube 20 and ensures that all slurry flows into the dispersion structure 30, thereby improving the slurry dispersion and quality. Furthermore, the extension plate 23 increases the structural strength of the guide tube 20 and prevents deformation of the guide tube 20.

[0056] The extension plate 23 has a greater length in the axial direction of the guide tube 20 than its width in the circumferential direction of the guide tube 20, thereby increasing the contact length between the extension plate 23 and the slurry and improving the slurry flow straightening effect of the extension plate 23. The extension plate 23 is provided in a sheet-like shape to reduce the obstruction of the extension plate 23 on the slurry and reduce the flow rate loss of the slurry. The thickness of the extension plate 23 is less than its width. The cross-section of the extension plate 23 can be rectangular, elliptical, or fusiform, etc.

[0057] The extension plate 23 extends radially along the guide tube 20. In some embodiments, the extension direction of the extension plate 23 forms an acute angle with the axial direction of the guide tube 20. The extension plate 23 is inclined toward the bottom 103 or top 102 of the circulation tank 10. In some embodiments, the extension plate 23 may also extend in a curved manner, for example, toward the bottom 103 or top 102 of the circulation tank 10, or the extension plate 23 may be curved along the circumferential direction of the circulation tank 10.

[0058] Please participate Figure 7In some embodiments, the pulping equipment 100 further includes a stirring structure 40. The stirring structure 40 includes a rotating shaft 41 and a plurality of stirring blades 42. The rotating shaft 41 extends in the axial direction of the circulation tank 10. The plurality of stirring blades 42 are respectively connected to the rotating shaft 41 and are arranged at intervals along the extension direction of the rotating shaft 41. In some embodiments, the plurality of stirring blades 42 are also arranged at intervals along the circumferential direction of the rotating shaft 41. For example, the plurality of stirring blades 42 can be divided into multiple groups, and the multiple groups of stirring blades 42 are arranged at intervals along the circumferential direction of the rotating shaft 41, each group includes multiple stirring blades 42, and the multiple stirring blades 42 in each group are arranged at intervals along the extension direction of the rotating shaft 41. Among them, the number of stirring blades 42 can be specifically set according to actual needs, and is not specifically limited in this application. For example, the number of stirring blades 42 can be 6, 9, 12, etc.

[0059] The extension direction of the stirring blade 42 intersects with the extension direction of the rotating shaft 41. For example, the stirring blade 42 is extended along the radial direction of the rotating shaft 41. In some embodiments, the extension direction of the stirring blade 42 forms an acute angle with the extension direction of the rotating shaft 41. The stirring blade 42 is inclined toward the bottom 103 or the top 102 of the circulation tank 10. In some embodiments, the stirring blade 42 can also extend in a curved manner. When the rotating shaft 41 drives the stirring blade 42 to rotate, the stirring blade 42 cuts the slurry, thereby reducing the rotational resistance of the stirring structure 40. In some embodiments, the stirring blade 42 is arranged to extend in a winding manner.

[0060] Along the axial direction of the circulation tank 10, multiple stirring blades 42 and multiple extension plates 23 are staggered. When the rotating shaft 41 drives the stirring blades 42 to rotate, the stirring blades 42 and the extension plates 23 form shear on the slurry, thereby improving the mixing uniformity of the slurry. Among them, the arrangement direction of the multiple stirring blades 42 can be parallel to the axial direction of the rotating shaft 41 to reduce the difficulty of installing the stirring blades 42. In some embodiments, the multiple stirring blades 42 are arranged in a spiral along the axial direction of the rotating shaft 41, and / or the multiple extension plates 23 are arranged in a spiral along the axial direction of the guide tube 20. In this way, when the rotating shaft 41 drives the stirring blades 42 to rotate, the multiple stirring blades 42 meet the extension plates 23 in turn, avoiding the concentrated encounter of the multiple stirring blades 42 and the multiple extension plates 23, thereby avoiding the concentrated shearing of the slurry by the multiple stirring blades 42 and the multiple extension plates 23, reducing the reaction force of the slurry on the stirring blades 42, and reducing the rotational resistance of the stirring structure 40. In some embodiments, a plurality of stirring blades 42 are arranged in a spiral shape along the axial direction of the rotating shaft 41. When the rotating shaft 41 drives the plurality of stirring blades 42 to rotate, the plurality of stirring blades 42 are arranged in a spiral shape, which can drive the slurry to flow along the axial direction of the rotating shaft 41, thereby driving the slurry to flow in the direction of the connecting hole 221, prompting the slurry to enter the dispersion structure 30, and improving the circulation efficiency of the slurry in the circulation tank 10. In some embodiments, a plurality of extension plates 23 are arranged in a spiral shape along the axial direction of the guide tube 20. In some embodiments, a plurality of stirring blades 42 are arranged in a spiral shape along the axial direction of the rotating shaft 41, and a plurality of extension plates 23 are arranged in a spiral shape along the axial direction of the guide tube 20. The spiral arrangement direction of the plurality of stirring blades 42 and the spiral arrangement direction of the plurality of extension plates 23 can be the same or opposite.

[0061] The stirring blade 42 can be constructed as a sheet structure. The thickness of the stirring blade 42 is less than the width. The cross section of the stirring blade 42 can be rectangular, elliptical, spindle-shaped, etc. The width direction of the cross section of the stirring blade 42 is tilted relative to the orthographic projection of the axial direction of the rotating shaft 41 on the plane where the cross section of the stirring blade 42 is located, and / or the width direction of the cross section of the extension plate 23 is tilted relative to the orthographic projection of the axial direction of the guide tube 20 on the plane where the cross section of the extension plate 23 is located. The width direction of the cross section of the stirring blade 42 is the long side direction of the cross section. The width direction of the cross section of the extension plate 23 is the long side direction of the cross section.

[0062] In some embodiments, the width direction of the cross section of the stirring blade 42 is tilted relative to the orthographic projection of the axial direction of the rotating shaft 41 on the plane where the cross section of the stirring blade 42 is located, that is, the width direction of the cross section of the stirring blade 42 is arranged at an angle to the axial direction of the rotating shaft 41. When the slurry collides with the stirring blade 42, the stirring blade 42 can guide the slurry toward the dispersion structure 30 to promote the circulation and dispersion of the slurry. The tilt direction of the stirring blade 42 corresponds to the rotation direction of the stirring structure 40. In some embodiments, from the top 102 of the circulation tank 10 toward the bottom 103, when the stirring structure 40 rotates clockwise, the stirring blade 42 tilts in a left-handed direction. Along the clockwise direction of the rotating shaft 41, the stirring blade 42 tilts toward the top 102 of the circulation tank 10. In some embodiments, from the top 102 of the circulation tank 10 toward the bottom 103, when the stirring structure 40 rotates counterclockwise, the stirring blade 42 tilts in a right-handed direction. Along the counterclockwise direction of the rotation shaft 41 , the stirring blade 42 is inclined toward the top 102 of the circulation tank 10 .

[0063] In some embodiments, the width direction of the cross section of the extension plate 23 is inclined relative to the orthographic projection of the axial direction of the guide tube 20 onto the plane of the extension plate 23's cross section. That is, the width direction of the cross section of the extension plate 23 is arranged at an angle to the axial direction of the guide tube 20. When the slurry collides with the extension plate 23, the extension plate 23 can direct the slurry toward the dispersion structure 30, thereby promoting the circulation and dispersion of the slurry. In some embodiments, the inclination direction of the extension plate 23 can be the same as the spiral direction of the guide structure 24, so that the width direction of the cross section of the extension plate 23 is approximately parallel to the flow direction of the slurry, reducing the flow obstruction of the extension plate 23 to the slurry. For example, when the guide structure 24 is arranged in a clockwise direction, the extension plate 23 is inclined clockwise toward the guide tube 20, and the width direction of the cross section of the extension plate 23 is arranged in a clockwise direction. In some embodiments, the width direction of the cross section of the extension plate 23 is parallel to the axial direction of the guide tube 20. The extension plate 23 extends along the axial direction of the guide tube 20. In this way, the flow-blocking effect of the extension plate 23 on the slurry can be reduced, the difficulty of installing the extension plate 23 can be reduced, and the manufacturing cost of the pulping equipment 100 can be reduced.

[0064] In some embodiments, the width direction of the cross section of the stirring blade 42 is tilted relative to the orthographic projection of the axial direction of the rotating shaft 41 on the plane where the cross section of the stirring blade 42 is located, and the width direction of the cross section of the extension plate 23 is tilted relative to the orthographic projection of the axial direction of the guide tube 20 on the plane where the cross section of the extension plate 23 is located. The tilt direction of the extension plate 23 corresponds to the rotation direction of the stirring structure 40, so that when the stirring structure 40 drives the slurry to rotate along the axial direction of the guide tube 20, the extension plate 23 can guide the slurry toward the direction close to the dispersion structure 30, thereby promoting the circulation and dispersion of the slurry. In some embodiments, from the top 102 of the circulation tank 10 toward the bottom 103, when the stirring structure 40 rotates clockwise, the extension plate 23 tilts in a left-handed direction. Along the clockwise direction of the guide tube 20, the extension plate 23 tilts toward the bottom 103 of the circulation tank 10. In some embodiments, when the stirring structure 40 rotates counterclockwise from the top 102 of the circulation tank 10 toward the bottom 103, the extension plate 23 tilts in a clockwise direction. Along the counterclockwise direction of the guide tube 20, the extension plate 23 tilts toward the bottom 103 of the circulation tank 10. The inclination direction of the stirring blade 42 is the same as the inclination direction of the extension plate 23, so that the direction of movement of the slurry pushed by the stirring blade 42 is the same as the direction of movement of the slurry pushed by the extension plate 23, thereby facilitating the flow of the slurry toward the dispersion structure 30 and thereby improving the circulation efficiency of the slurry.

[0065] The stirring blade is spaced apart from the side plate 21, and the distance between the end of the stirring blade 42 away from the rotating shaft 41 and the side plate 21 is greater than the distance between the stirring blade 42 and the adjacent extension plate 23. In this way, when the stirring blade 42 meets the extension plate 23, the gap between the stirring blade 42 and the side plate 21 can provide sufficient circulation space for the slurry, thereby reducing the rotational resistance of the stirring structure 40. The extension length of the stirring blade 42 is greater than or equal to the extension length of the extension plate 23. The distance between the end of the extension plate 23 away from the side plate 21 and the rotating shaft 41 is greater than the distance between the end of the stirring blade 42 away from the rotating shaft 41 and the side plate 21, thereby preventing the extension plate 23 from being too long, thereby preventing the slurry from exerting too much force on the extension plate 23 when the stirring blade 42 meets the extension plate 23, and thus preventing deformation of the extension plate 23 and / or the side plate 21.

[0066] In some embodiments, the stirring structure 40 further includes a scraping blade connected to the rotating shaft 41. The scraping blade extends into the second flow channel 2022 and is used to scrape the slurry adhered to the side wall 12 of the circulation tank 10 and the side plate of the guide tube 20.

[0067] Please also refer to Figure 1 、 Figure 8 and Figure 9The dispersed structure 30 includes a stator 31 and a rotor 32. The stator 31 includes a stator disk 311 and at least one layer of stator retaining rings 312. The stator retaining ring 312 is arranged on the stator disk 311. A stator slot 3121 is provided on the stator retaining ring 312. The rotor 32 includes a rotor disk 321 and at least one layer of rotor retaining rings 322. The rotor retaining ring 322 is arranged on the rotor disk 321. A rotor slot 3221 is provided on the rotor retaining ring 322. The rotor retaining ring 322 is located on the inner side and / or outer side of the stator retaining ring 312. An inlet 301 is provided on the stator disk 311. The stator slot 3121 on the outermost stator retaining ring 312 or the rotor slot 3221 on the outermost rotor retaining ring 322 is configured as an outflow port 302. The stator 31 is fixed relative to the circulation tank 10, and the rotor 32 is rotatable relative to the circulation tank 10. When the rotor 32 rotates, the slurry generates negative pressure near the rotor retaining ring 322, causing the slurry to flow from the inlet 301 into the dispersion structure 30. The rotor retaining ring 322 then exerts a centrifugal force on the slurry, causing it to be ejected from the outlet 302. As the slurry flows through the rotor slots 3221 on the rotor retaining ring 322 and the stator slots 3121 on the stator retaining ring 312, the rotor retaining ring 322 and the stator retaining ring 312 shear and disperse the slurry.

[0068] At least one of the stator retaining ring 312 and the rotor retaining ring 322 is configured as a multi-layer structure. For example, the rotor retaining ring 322 is configured as a single layer, and the stator retaining ring 312 is configured as a two-layer structure, with the rotor retaining ring 322 located between the two layers of stator retaining rings 312. The stator slot 3121 on the outermost stator retaining ring 312 is configured as an outflow port 302. The slurry flows in from the inflow port 301 and out from the outflow port 302. In some embodiments, the rotor retaining ring 322 is disposed at the outermost side of the dispersion structure 30. When the rotor 32 rotates, the outermost rotor retaining ring 322 throws out the slurry, and the slurry directly enters the guide channel 202, avoiding the stator retaining ring 312 from causing flow obstruction to the slurry, thereby increasing the outflow speed of the slurry and the circulation speed.

[0069] The rotor 32 also includes a pusher blade 323. The pusher blade 323 is arranged on the rotor disk 321 and is located on the inner side of the rotor retaining ring 322 at the innermost side of the dispersion structure 30. It is fixedly connected to the rotor disk 321. The pusher blade 323 and the rotor disk 321 can be fixedly connected together by welding, screwing, clamping, etc., or the pusher blade 323 can also be integrally formed with the rotor disk 321. The pusher blade 323 is arranged to extend in a spiral shape. Along the axial direction of the circulation tank 10, the pusher blade 323 is roughly conical. The pusher blade 323 can be a clockwise spiral or a counterclockwise spiral. When the rotor 32 rotates, the pusher blade 323 is used to push the slurry along the axial direction of the circulation tank 10 and the radial direction of the rotor disk 321, so that the slurry flows from the inlet 301 into the interior of the dispersion structure 30.

[0070] The dispersed structure 30 also includes a mounting base 324. The mounting base 324 includes a first base body 3241, a second base body 3242 and a connector 3243. The first base body 3241 is fixedly connected to the circulation tank 10. The connector 3243 is located between the first base body 3241 and the second base body 3242, and abuts against the first base body 3241 and the second base body 3242 respectively. The first base body 3241, the second base body 3242 and the connector 3243 are fixedly connected together. For example, the first base body 3241, the second base body 3242 and the connector 3243 can be fixedly connected together by screws or bolts. For example, a screw through hole is provided on the second base body 3242, the connector 3243 is hollow, a threaded hole is provided on the first base body 3241, the screw is passed through the threaded through hole and the connector 3243, and is threadedly connected to the threaded hole. In some embodiments, the first base body 3241 , the second base body 3242 and the connecting member 3243 may be fixedly connected together by welding or clamping, or the first base body 3241 , the second base body 3242 and the connecting member 3243 may be integrally formed.

[0071] The stator 31 and the rotor 32 are both located between the first base 3241 and the second base 3242. The stator 31 is fixedly connected to the first base 3241 and / or the second base 3242. For example, the stator 31 is fixedly connected to the second base 3242. The stator 31 and the second base 3242 can be fixedly connected together by welding, clamping, screwing, etc., or the stator 31 and the second base 3242 can be integrally formed.

[0072] The guide tube 20 is fixed relative to the stator 31. The guide tube 20 can be fixedly connected to the stator disk 311 or to the second base 3242. In some embodiments, the guide tube 20 can be fixedly connected relative to the rotor 32. The guide tube 20 can be fixedly connected to the rotor disk 321. When the rotor 32 rotates, the guide tube 20 rotates together with the rotor 32.

[0073] A connecting hole 3244 is provided on the second seat body 3242. The connecting hole 3244 is connected to the inlet 301. The pusher blade 323 is provided in the connecting hole 3244 and extends between the first seat body 3241 and the second seat body 3242. The portion of the pusher blade 323 located in the connecting hole 3244 and on the side of the second seat body 3242 away from the first seat body 3241 is used to push the slurry to flow along the axial direction of the circulation tank 10, so that the dispersion structure 30 sucks the slurry from the connecting hole 3244 and the inlet 301. The portion of the pusher blade 323 located between the first seat body 3241 and the second seat body 3242 is used to push the slurry to flow along the radial direction of the circulation tank 10, so that the slurry passes through the rotor slot 3221 and the stator slot 3121. The pusher blade 323 is used to increase the flow velocity of the slurry, thereby increasing the flow rate of the slurry in the dispersion structure 30 and improving the dispersion and circulation efficiency.

[0074] In some embodiments, the dispersion structure 30 further includes a flow guide hood 33. The flow guide hood 33 is provided at the connection hole 3244 and the inlet 301. The flow guide hood 33 is fixedly connected to the side of the second seat body 3242 away from the first seat body 3241. The flow guide hood 33 and the second seat body 3242 can be fixedly connected together by welding, clamping, screwing, etc., or the flow guide hood 33 and the second seat body 3242 can be integrally formed. The flow guide hood 33 is arranged in an annular shape. The pusher blades 323 are passed through the flow guide hood 33. The flow guide hood 33 is used to limit and guide the slurry. When the pusher blades 323 push the slurry to move, the flow guide hood 33 can reduce the loss of the slurry in the radial direction under the action of centrifugation, so that the slurry remains between the flow guide hood 33 and the pusher blades 323, thereby improving the axial pushing effect of the pusher blades 323 on the slurry and improving the suction flow of the dispersion structure 30.

[0075] The dispersed structure 30 also includes a drive shaft 34 and a driver 35. The driver 35 is in transmission connection with the drive shaft 34. The drive shaft 34 is fixedly connected to the rotor 32. The driver 35 is used to drive the drive shaft 34 to rotate, so that the drive shaft 34 drives the rotor 32 to rotate relative to the stator 31. Exemplarily, the driver 35 is located at the bottom of the circulation tank 10. A mounting hole is provided on the bottom wall 13 of the circulation tank 10, and the first seat body 3241 is fixedly connected to the bottom wall 13 and sealed at the mounting hole. A avoidance hole is provided on the first seat body 3241, and the drive shaft 34 is inserted into the avoidance hole.

[0076] In some embodiments, the driver 35 can also be mounted on the top cover 11, which has a mounting hole. The first base 3241 is fixedly connected to the top cover 11 and sealed to the mounting hole. The first base 3241 has a clearance hole, through which the drive shaft 34 is inserted. A sleeve can be mounted on the outside of the drive shaft 34, which is fixedly or rotatably connected to the rotor. The sleeve is used to seal the drive shaft 34 to prevent erosion of the drive shaft 34 by the slurry and to prevent debris generated by the rotation of the drive shaft 34 from entering the slurry, thereby preventing contamination of the slurry.

[0077] See also Figure 7 In some embodiments, the pulping equipment 100 further includes a heat dissipation structure 50. The heat dissipation structure 50 is connected to the top cover 11 and extends at least partially into the receiving cavity 201. The heat dissipation structure 50 is immersed in the slurry. The heat dissipation structure 50 is used to dissipate heat from the slurry so that the slurry is within a suitable temperature range and the quality of the slurry is improved. A heat conduction channel is provided in the heat dissipation structure 50. A heat conduction medium is provided in the heat conduction channel, and the heat conduction medium circulates in the heat conduction channel. A part of the heat dissipation structure 50 is located inside the circulation tank 10, and the other part is located outside the circulation tank 10. When the heat conduction medium flows in the heat conduction channel, the heat inside the circulation tank 10 can be brought to the outside of the circulation tank 10.

[0078] Wherein, the heat dissipation structure 50 can be configured as a heat pipe, or configured as a cooling circulation pipe. For example, wherein, the heat dissipation structure 50 is configured as a heat pipe. The heat conduction channel is provided in the heat pipe. The heat conduction channel is configured as a capillary tube. The heat pipe includes a first segment and a second segment connected to the first segment. The first segment is located in the receiving chamber 201. The second segment is located outside the circulation tank 10. When slurry is stored in the circulation tank 10, the first segment is immersed in the slurry. The heat-conducting medium in the first segment vaporizes after absorbing the heat of the slurry and flows along the heat-conducting channel to the second segment. The vaporized heat-conducting medium condenses into a liquid in the second segment. The heat-conducting medium condensed into a liquid will flow back to the first segment along the capillary tube due to the capillary principle. The heat-conducting medium circulates back and forth between the first segment and the second segment, thereby realizing heat dissipation of the slurry. In this way, the heat dissipation structure 50 can spontaneously drive the heat-conducting medium to circulate in the heat-conducting channel through the temperature difference between the slurry and the external environment, avoiding the need for an additional driving structure, thereby reducing the power consumption of the pulping equipment 100 and reducing the cost of using the pulping equipment 100. Exemplarily, the boiling point of the heat-conducting medium can be configured to be 25°C-45°C. For example, the boiling point of the heat-conducting medium can be 25°C, 26°C, 30°C, 35°C, 40°C, 45°C, etc. In some embodiments, fins 514 are provided on the heat dissipation structure 50 to increase the heat conduction area and improve the heat dissipation capacity.

[0079] In some embodiments, the circulation tank 10 is provided with a cooling jacket 60. The cooling jacket 60 surrounds the sidewalls 12 and / or the bottom wall 13. A cooling medium is passed through the cooling jacket 60 to cool the sidewalls 12 and / or the bottom wall 13, thereby dissipating heat from the slurry through the sidewalls 12 and / or the bottom wall 13.

[0080] In some embodiments, the pulping equipment 100 further includes a feeding structure. A feeding port is provided on the top cover 11. The feeding structure is connected to the feeding port. The feeding structure is used to feed solid materials into the circulation tank 10. The feeding structure can be configured as a twin-screw feeding mechanism. In some embodiments, the pulping equipment 100 further includes a liquid inlet structure. A liquid inlet is provided on the top cover 11. The liquid inlet structure includes a liquid inlet pipe. The liquid inlet pipe is passed through the liquid inlet and extends into the circulation chamber 101. The opening of the liquid inlet pipe in the circulation chamber 101 is arranged toward the side wall 12 of the circulation tank 10, so that when the liquid inlet pipe transports liquid material into the circulation tank 10, the liquid material will flow down along the side wall 12, thereby reducing the impact force of the liquid material on the liquid surface, reducing or avoiding splashing of the liquid material, and avoiding gas mixing into the liquid material.

[0081] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A pulping device (100), characterized in that: include: A circulation tank (10), wherein the circulation tank (10) is used to contain slurry; A guide tube (20) is arranged inside the circulation tank (10), a receiving cavity (201) is formed in the guide tube (20), and an outer wall of the guide tube (20) and an inner wall of the circulation tank (10) are spaced apart to form a guide channel (202); A dispersion structure (30), wherein the dispersion structure (30) is at least partially located between the bottom of the guide tube (20) and the bottom wall (13) of the circulation tank (10), and the dispersion structure (30) has an inlet (301) and an outlet (302), wherein the inlet (301) is located on one side of the dispersion structure (30) close to the bottom of the guide tube (20) and is communicated with the receiving chamber (201), and the outlet (302) is located on the peripheral side of the dispersion structure (30) and is communicated with the guide channel (202), and the dispersion structure (30) is used to disperse the slurry; the dispersion structure (30) includes a stator (31) and a rotor (32), wherein the stator (31) is fixed relative to the circulation tank (10), and the rotor (32) rotates relative to the stator (31), and the stator (31) rotates relative to the rotor (32). 1) comprising a stator disk (311) and at least one layer of stator retaining rings (312) arranged on the stator disk (311), wherein the stator retaining rings (312) are provided with stator slots (3121); the rotor (32) comprising a rotor disk (321) and at least one layer of rotor retaining rings (322) arranged on the rotor disk (321), wherein the rotor retaining rings (322) are provided with rotor slots (3221); the rotor retaining rings (322) are located on the inner side and / or the outer side of the stator retaining rings (312); the stator disk (311) is provided with the inlet (301); the stator slots (3121) or the rotor slots (3221) located at the outermost side of the dispersed structure (30) are configured as the inlet (302); and at least one of the stator retaining rings (312) and the rotor retaining rings (322) is provided with multiple layers.

2. The pulping device (100) according to claim 1, characterized in that: The guide channel (202) includes a first flow channel (2021) and a second flow channel (2022) connected to the first flow channel (2021); the circulation tank (10) includes a bottom wall (13) and a side wall (12); the side wall (12) is arranged in an annular shape; the bottom wall (13) and the side wall (12) enclose a circulation cavity (101); the guide tube (20) is located in the circulation cavity (101); the guide tube (20) includes a bottom plate (22) and a side plate (21); the bottom plate (22) is connected to the end of the side plate (21) close to the bottom wall (13) of the circulation tank (10), the side plate (21) is arranged in a ring shape, the side plate (21) and the bottom plate (22) enclose the receiving chamber (201), the bottom plate (22) and the bottom wall (13) form the first flow channel (2021), the side plate (21) and the side wall (12) form the second flow channel (2022), and the inlet (301) is connected to the receiving chamber (201).

3. The pulping device (100) according to claim 2, characterized in that: The cross-sectional area of the second flow channel (2022) at a position close to the top (102) of the circulation tank (10) is less than or equal to the cross-sectional area at a position close to the bottom (103) of the circulation tank (10).

4. The pulping device (100) according to claim 2, characterized in that A first distance (D1) between the bottom plate (22) and the bottom wall (13) is less than or equal to a second distance (D2) between the side plate (21) and the side wall (12).

5. The pulping device (100) according to claim 2, characterized in that The side plate (21) is inclined or curved relative to the bottom plate (22) toward the side wall (12) of the circulation tank (10).

6. The pulping device (100) according to claim 2, characterized in that The ratio of the distance between the end of the side plate (21) away from the bottom plate (22) and the bottom wall (13) of the circulation tank (10) to the distance between the liquid surface of the slurry and the bottom wall (13) of the circulation tank (10) is 0.8-3.

7. The pulping device (100) according to claim 1, characterized in that The ratio of the diameter of the guide tube (20) to the diameter of the circulation tank (10) is 0.4-0.

98.

8. The pulping device (100) according to claim 1, characterized in that At least one of the outer wall of the guide cylinder (20) and the inner wall of the circulation tank (10) is provided with a guide structure (24), and the guide structure (24) extends in a spiral shape.

9. The pulping device (100) according to claim 1, characterized in that The stator (31) is fixed relative to the circulation tank (10), the guide tube (20) is fixed relative to the stator (31), or the guide tube (20) is fixed relative to the rotor (32).

10. The pulping device (100) according to claim 1, characterized in that The dispersion structure (30) further includes a pusher blade (323), which is arranged on the rotor disk (321) and located on the inner side of the rotor retaining ring (322) at the innermost side of the dispersion structure (30). The pusher blade (323) is used to push the slurry along the radial direction of the rotor disk (321).

11. The pulping device (100) according to claim 1, characterized in that The pulping equipment (100) further includes a baffle (25), which is arranged on the side wall (12) of the circulation tank (10) and is located on a side of the guide tube (20) away from the bottom (103) of the circulation tank (10), and the baffle (25) is extended in the radial direction of the circulation tank (10). On a plane perpendicular to the central axis (C1) of the circulation tank (10), the orthographic projection of the baffle (25) at least partially covers the outlet of the guide channel (202) on the side close to the top (102) of the circulation tank (10).

12. The pulping device (100) according to claim 11, characterized in that At least one of the two surfaces of the baffle (25) facing each other in the axial direction of the circulation tank (10) is inclined or curved toward the bottom (103) of the circulation tank (10).

13. The pulping device (100) according to claim 11, characterized in that The baffle (25) includes a plurality of first plates (251) and a plurality of second plates (252), wherein the second plates (252) are located on a side of the first plates (251) away from the bottom wall (13) of the circulation tank (10), and the plurality of first plates (251) and the plurality of second plates (252) are alternately arranged along the circumferential direction of the circulation tank (10).

14. The pulping device (100) according to claim 1, characterized in that The pulping equipment (100) further comprises a stirring structure (40), wherein the stirring structure (40) extends into the receiving cavity (201), and the stirring structure (40) is used to stir the pulp.

15. The pulping device (100) according to claim 1, characterized in that The pulping equipment (100) further comprises a heat dissipation structure (50), wherein the heat dissipation structure (50) extends into the receiving cavity (201), and the heat dissipation structure (50) is used to dissipate heat from the pulp.

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