Pulping equipment

Abstract

The utility model provides pulping equipment. The pulping equipment comprises a circulating tank, a dispersing structure, a stirring paddle and a heat dissipation structure. An accommodating cavity for accommodating slurry is formed in the circulating tank. The dispersing structure is located in the containing cavity and arranged at the bottom of the circulating tank, and the dispersing structure is used for dispersing the slurry and enabling the slurry to circularly flow in the circulating tank. The stirring paddle is contained in the containing cavity and comprises a rotating shaft and wall scraping blades, the rotating shaft extends in the axial direction of the circulating tank, and the wall scraping blades are connected to the rotating shaft and used for scraping off slurry adhering to the inner wall of the circulating tank. The heat dissipation structure is at least partially contained in the containing cavity and used for cooling the slurry. Therefore, slurry adhered to the inner wall of the circulating tank is scraped off through the wall scraping blades, the dirt thermal resistance effect is greatly reduced, the slurry close to the center of the circulating tank is subjected to heat dissipation through the heat dissipation structure, the slurry is subjected to heat dissipation through the heat dissipation structure and the circulating tank together, and therefore the heat dissipation efficiency of the slurry is improved.

Description

Technical Field

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

[0002] When pulping, the temperature of the pulp increases. In traditional pulping equipment, the pulp tends to adhere to the inner wall of the tank, forming fouling thermal resistance and resulting in poor heat dissipation of the pulp. Utility Model Content

[0003] The present application provides a pulping device to solve the problem of poor heat dissipation effect of slurry.

[0004] The present application provides a pulping device, which includes a circulation tank, a dispersion structure, a stirring paddle and a heat dissipation structure. A holding cavity for accommodating slurry is provided in the circulation tank. The dispersion structure is located in the holding cavity and is arranged at the bottom of the circulation tank. The dispersion structure is used to disperse the slurry and circulate the slurry in the circulation tank. The stirring paddle is accommodated in the holding cavity. The stirring paddle includes a rotating shaft and a scraping blade. The rotating shaft extends along the axial direction of the circulation tank. The scraping blade is connected to the rotating shaft and is used to scrape off the slurry adhered to the inner wall of the circulation tank. The heat dissipation structure is at least partially accommodated in the holding cavity and is used to cool the slurry.

[0005] In some embodiments, a heat conduction channel is provided in the heat dissipation structure, a heat conduction medium is provided in the heat conduction channel, and the heat conduction medium circulates in the heat conduction channel.

[0006] In some embodiments, the heat dissipation structure includes a heat pipe, the heat conduction channel is arranged in the heat pipe, and the heat conduction channel is configured as a capillary channel, or the heat dissipation structure includes a heat dissipation pipe, the heat conduction channel is arranged in the heat dissipation pipe, and the heat dissipation structure also includes a pumping member, and the pumping member is used to pump the heat conduction medium into the heat conduction channel.

[0007] In some embodiments, the heat dissipation structure includes a first heat dissipation member and multiple second heat dissipation members, the first heat dissipation member is connected to the circulation tank and extends along a first direction in the accommodating cavity, multiple second heat dissipation members are respectively connected to the first heat dissipation member and are arranged at intervals along the first direction, the second heat dissipation members extend along a second direction in the accommodating cavity, and the first direction intersects with the second direction.

[0008] In some embodiments, the scraping blade includes a first paddle portion and a second paddle portion, the first paddle portion is connected to the rotating shaft, the second paddle portion is connected to an end of the first paddle portion away from the rotating shaft, the first paddle portion is arranged close to the bottom wall of the circulation tank, and the second paddle portion is arranged close to the side wall of the circulation tank.

[0009] In some embodiments, the first paddle portion includes a first paddle segment and a second paddle segment, the first paddle segment is connected to the rotating shaft and is located on a side of the dispersion structure away from the bottom wall of the circulation tank, the second paddle segment is connected to an end of the first paddle segment away from the rotating shaft and is located between the dispersion structure and the side wall of the circulation tank, and the second paddle portion is connected to the end of the second paddle segment away from the first paddle segment.

[0010] In some embodiments, the stirring paddle also includes a plurality of stirring blades, which are respectively connected to the rotating shaft and arranged at intervals along the extension direction of the rotating shaft. The extension direction of the stirring blades intersects with the extension direction of the rotating shaft. Along the axial direction of the circulation tank, the plurality of stirring blades and the plurality of second heat dissipation members are staggered.

[0011] In some embodiments, the plurality of stirring blades are arranged in a spiral shape along the axial direction of the rotating shaft, or the arrangement direction of the plurality of stirring blades is parallel to the axial direction of the rotating shaft.

[0012] In some embodiments, the width direction of the cross section of the stirring blade is tilted relative to the orthographic projection of the axial direction of the rotating shaft on the plane where the cross section of the stirring blade is located, and / or the width direction of the cross section of the second heat sink is tilted relative to the orthographic projection of the first direction on the plane where the cross section of the second heat sink is located.

[0013] In some embodiments, an inclination direction of the stirring blade relative to the axial direction of the rotating shaft is the same as an inclination direction of the second heat dissipating element relative to the first direction.

[0014] In some embodiments, the stirring paddle further includes a plurality of stirring portions disposed on the scraping blade, and along the axial direction of the circulation tank, the plurality of stirring portions and the plurality of second heat dissipating elements are staggered.

[0015] In some embodiments, a guide groove is provided on the rotating shaft, a guide sleeve is provided in the guide groove, the guide sleeve and the side wall of the guide groove are spaced to form a cooling channel, and the guide sleeve can be rotatable or fixed relative to the rotating shaft.

[0016] In some embodiments, the dispersed structure includes a stator and a rotor, 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; an inlet is provided on the stator disk, and the stator slots on the outermost stator retaining rings or the rotor slots on the outermost rotor retaining rings are configured as outflow outlets, and the slurry flows in from the inflow inlet and flows out from the outflow outlet.

[0017] In the pulping equipment provided by the present application, on the one hand, based on the stirring paddle arranged in the accommodating chamber, the scraping blades of the stirring paddle scrape off the slurry adhering to the inner wall of the circulation tank, which greatly reduces the thermal resistance effect of dirt and improves the heat exchange efficiency between the slurry and the circulation tank, thereby improving the heat dissipation efficiency of the slurry. On the other hand, the pulping equipment dissipates heat to the slurry near the center of the circulation tank through the heat dissipation structure. When stirring the slurry, the stirring paddle can also increase the flow rate of the slurry when flowing through the heat dissipation structure, improve the heat exchange efficiency between the heat dissipation structure and the slurry, thereby improving the heat dissipation efficiency of the slurry. The heat dissipation of the slurry by the heat dissipation structure and the circulation tank is effectively improved. The temperature consistency of the slurry is improved, thereby improving the quality of the slurry. On the other hand, compared with the traditional pulping equipment in which the dispersion structure is arranged outside the circulation tank and connected to the circulation tank through a pipeline, the pulping equipment in the embodiment of the present application is based on the dispersion structure arranged in the accommodating chamber. The dispersion structure disperses and circulates the slurry inside the circulation tank, which can simplify the structure of the pulping equipment, make the structure of the pulping equipment more compact, and do not require additional pipelines, greatly reducing the difficulty of cleaning the pulping equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a cross-sectional view of the pulping equipment provided in the embodiment of the present application.

[0020] Figure 2 is a cross-sectional view of a heat dissipation structure provided in some embodiments of the present application.

[0021] Figure 3 This is a schematic diagram of the heat dissipation structure provided in some embodiments of the present application.

[0022] Figure 4This is a partial cross-sectional view of the heat dissipation structure provided in some embodiments of the present application.

[0023] Figure 5 This is a partial cross-sectional view of the heat dissipation structure provided in some embodiments of the present application.

[0024] Figure 6 This is a partial structural diagram of the heat dissipation structure provided in some embodiments of the present application.

[0025] Figure 7 This is a schematic diagram of the partial structure of the heat dissipation structure and stirring paddle provided in some embodiments of the present application.

[0026] Figure 8 It is a side view of the heat dissipation structure provided in an embodiment of the present application.

[0027] Figure 9 It is a partial cross-sectional view of a stirring paddle provided in some embodiments of the present application.

[0028] Figure 10 It is a cross-sectional view of the dispersed structure provided in the embodiment of the present application.

[0029] Figure 11 It is a structural schematic diagram of the stator and rotor provided in an embodiment of the present application.

[0030] Description of the main reference numerals: pulping equipment 100; circulation tank 10; accommodating chamber 101; top 102; bottom 103; top cover 11; side wall 12; bottom wall 13; discharge port 131; central axis C1; dispersion structure 20; inlet 201; outlet 202; stator 21; stator disk 211; stator retaining ring 212; stator slot 2121; rotor 22; rotor disk 221; rotor retaining ring 222; rotor slot 2221; pusher blade 223; mounting seat 224; first seat body 2241; second seat body 2242; connecting member 2243; communicating hole 2244; driving shaft 23; driver 24; drainage cover 25; stirring paddle 30; rotating shaft 31; guide Flow trough 311; guide sleeve 312; cooling flow channel 313; stirring blade 32; scraping blade 33; first paddle portion 331; first paddle section 3311; second paddle section 3312; second paddle portion 332; scraper 34; stirring portion 35; heat dissipation structure 40; first heat dissipation element 411; heat conduction channel 4111; second heat dissipation element 412; guide hole 4121; inclined surface 4122; guide structure 4124; first segment 421; second segment 422; third segment 423; temperature control element 424; fin 425; protective cover 426; first tube portion 431; first flow channel 4311; second tube portion 432; second flow channel 4321; heat dissipation jacket 50.

[0031] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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 dispersion structure 20, a stirring paddle 30 and a heat dissipation structure 40. A accommodating chamber 101 for accommodating slurry is provided in the circulation tank 10. The circulation tank 10 includes a top 102 and a bottom 103 arranged opposite to each other along the central axis C1. After the pulping equipment 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 dispersion structure 20 is located in the accommodating chamber 101 and is arranged at the bottom 103 of the circulation tank 10. The dispersion structure 20 is used to disperse the slurry and circulate the slurry in the circulation tank 10. The stirring paddle 30 includes a rotating shaft 31 and a scraping blade 33. The rotating shaft 31 extends in the axial direction of the circulation tank 10. The scraping blade 33 is connected to the rotating shaft 31 and is used to scrape off the slurry adhering to the inner wall of the circulation tank 10 to promote the circulation of the slurry and improve the dispersion effect of the slurry. The heat dissipation structure 40 is at least partially accommodated in the accommodating cavity 101 and is used to cool the slurry in the accommodating cavity 101 .

[0036] In the pulping equipment 100 of the embodiment of the present application, on the one hand, based on the stirring paddle 30 set in the accommodating chamber 101, the slurry adhering to the inner wall of the circulation tank 10 is scraped off by the scraping blade 33 of the stirring paddle 30, which greatly reduces the dirt thermal resistance effect, improves the heat exchange efficiency between the slurry and the circulation tank 10, and thus improves the heat dissipation efficiency of the slurry. On the other hand, the pulping equipment 100 dissipates heat to the slurry near the center of the circulation tank 10 through the heat dissipation structure 40. The stirring paddle 30 can also increase the flow rate of the slurry when it flows through the heat dissipation structure 40 when stirring the slurry, thereby improving the heat exchange efficiency between the heat dissipation structure 40 and the slurry, thereby improving the slurry. The heat dissipation efficiency is improved, and the slurry is jointly dissipated through the heat dissipation structure 40 and the circulation tank 10, which effectively improves the temperature consistency of the slurry and thus improves the quality of the slurry. On the other hand, 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 100 in the embodiment of the present application is based on the dispersion structure 20 set in the accommodating cavity 101, so that the slurry is dispersed and circulated inside the circulation tank 10, which can simplify the structure of the pulping equipment 100, make the structure of the pulping equipment 100 more compact, and do not need to set additional pipelines, which greatly reduces the difficulty of cleaning the pulping equipment 100.

[0037] The circulation tank 10 includes a side wall 12 and a bottom wall 13 fixedly connected to the side wall 12. The side wall 12 and the bottom wall 13 enclose a accommodating chamber 101. The pulping equipment 100 also includes a top cover 11. The top cover 11 is arranged at the top 102 of the circulation tank 10, and is used to seal the end of the side wall 12 away from the bottom wall 13. The dispersion structure 20 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. The slurry flows in the circulation tank 10 from the central axis C1 of the circulation tank 10 along the bottom wall 13 toward the side wall 12, rises along the side wall 12 from the bottom 103 to the top 102, and sinks from the top 102 to the bottom 103 in the center axis C1 of the circulation tank 10 and its vicinity, thereby forming a circulating flow in the circulation tank 10. Exemplarily, there is an arc transition between the side wall 12 and the bottom wall 13, and the side wall 12 and the bottom wall 13 are smoothly connected, which is conducive 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 bent toward the top 102 to guide the slurry and reduce the flow velocity loss of the slurry. In some embodiments, a discharge port 131 connected to the accommodating cavity 101 is provided on the bottom wall 13. The discharge port 131 is arranged near the position of the dispersion structure 20 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.

[0038] The distance between the heat dissipation structure 40 and the side wall 12 of the circulation tank 10 is less than or equal to the distance between the heat dissipation structure 40 and the central axis C1 of the circulation tank 10. When the dispersion structure 20 drives the slurry to circulate, the flow velocity of the slurry near the side wall 12 of the circulation tank 10 is greater than the flow velocity of the slurry near the central axis C1 of the circulation tank 10. The heat dissipation structure 40 is arranged close to the side wall 12 of the circulation tank 10, which can make the flow velocity of the slurry at the surface of the heat dissipation structure 40 higher, thereby improving the heat exchange efficiency between the heat dissipation structure 40 and the slurry and improving the heat dissipation efficiency. The heat dissipation structure 40 is spaced apart from the side wall 12 of the circulation tank 10 to avoid slurry being blocked between the heat dissipation structure 40 and the side wall 12. The distance between the heat dissipation structure 40 and the side wall 12 can be specifically set according to actual needs and is not specifically limited in this application.

[0039] Multiple heat dissipation structures 40 may be provided, and the multiple heat dissipation structures 40 may be arranged at intervals along the circumference of the circulation tank 10, thereby increasing the contact area between the heat dissipation structure 40 and the slurry and improving heat dissipation efficiency. The multiple heat dissipation structures 40 may be arranged at equal intervals or at unequal intervals along the circumference of the circulation tank 10. In some embodiments, a single heat dissipation structure 40 may be provided.

[0040] Please also refer to Figure 1 and Figure 2 The heat dissipation structure 40 is provided with a heat conduction channel 4111. A heat conduction medium is provided in the heat conduction channel 4111 and circulates within the heat conduction channel 4111. A portion of the heat dissipation structure 40 is located inside the circulation tank 10, while another portion is located outside the circulation tank 10. The heat dissipation structure 40 transfers heat from the circulation tank 10 to the outside of the circulation tank 10 through the circulation of the heat conduction medium within the heat conduction channel 4111.

[0041] Please also refer to Figure 1 、 Figure 2 and Figure 3, illustratively, the heat dissipation structure 40 includes a heat pipe. A heat conducting channel 4111 is provided in the heat pipe. The heat conducting channel 4111 is configured as a capillary tube. The heat pipe includes a first segment 421 and a second segment 422. The first segment 421 is located in the accommodating cavity 101. The first segment 421 is immersed in the slurry. The second segment 422 is connected to the first segment 421. The second segment 422 is located outside the circulation tank 10. The heat conducting medium in the first segment 421 vaporizes after absorbing the heat of the slurry, and the vaporized heat conducting medium flows along the heat conducting channel 4111 to the second segment 422, and condenses into a liquid in the second segment 422. The liquid heat conducting medium spontaneously flows back to the first segment 421 along the capillary tube by capillary action. The heat conducting medium circulates back and forth between the first segment 421 and the second segment 422 by capillary action, thereby achieving heat dissipation of the slurry. In this way, the heat dissipation structure 40 can spontaneously drive the heat transfer medium to circulate within the heat transfer channel 4111 by utilizing the temperature difference between the slurry and the external environment, thereby avoiding the need for an additional drive structure, thereby reducing the power consumption of the pulping apparatus 100 and lowering the cost of using the pulping apparatus 100. For example, the boiling point of the heat transfer medium can be configured to be 25°C-45°C. For example, the boiling point of the heat transfer medium can be 25°C, 26°C, 30°C, 35°C, 40°C, 45°C, and so on.

[0042] In some embodiments, the heat pipe further includes a third segment 423 connected between the first segment 421 and the second segment 422. The third segment 423 is at least partially located within the accommodating cavity 101. The third segment 423 is located above the slurry, or the third segment 423 can be partially immersed in the slurry. The third segment 423 is constructed as an insulating segment, and the third segment 423 is used to reduce the heat exchange between the heat-conducting medium located in the third segment 423 and the outside. When the heat-conducting medium in the first segment 421 vaporizes and flows along the heat-conducting channel 4111, the third segment 423 is used to prevent the heat of the vaporized heat-conducting medium from dissipating to the space between the top cover 11 and the slurry, so that the vaporized heat-conducting medium flows to the second segment 422, thereby conducting the heat of the slurry to the outside of the circulation tank 10.

[0043] In some embodiments, the heat dissipation structure 40 further includes a temperature control element 424. The temperature control element 424 is disposed outside the circulation tank 10 and is used to regulate the temperature of the second segment 422. By regulating the temperature of the second segment 422, the temperature control element 424 can indirectly regulate the temperature of the first segment 421, thereby regulating the temperature of the slurry. The temperature control element 424 can be configured as, but is not limited to, a cooling water jacket, a cooling fan, or the like.

[0044] In some embodiments, fins 425 are provided on the first segment 421 and / or the second segment 422 to increase the heat conduction area, thereby increasing the heat absorption capacity of the first segment 421 and / or increasing the heat dissipation capacity of the second segment 422. A plurality of fins 425 may be provided, with intervals between the plurality of fins 425. The number of fins can be specifically set according to actual needs and is not specifically limited in this application. In some embodiments, fins 425 are provided on the first segment 421. In some embodiments, fins 425 are provided on the second segment 422. In some embodiments, fins 425 are provided on each of the first segment 421 and the second segment 422.

[0045] In some embodiments, the heat dissipation structure 40 further includes a protective sleeve 426. The protective sleeve 426 is hollow, and the heat pipe is disposed within the protective sleeve 426. The protective sleeve 426 is used to protect the heat pipe, preventing the slurry from contacting the heat pipe, preventing the slurry from corroding the heat pipe, and preventing the heat pipe from contaminating the slurry. The second heat dissipation element 412 is connected to the protective sleeve 426.

[0046] See also Figure 1 and Figure 4 In some embodiments, the heat dissipation structure 40 includes a heat dissipation pipe, and a heat conduction channel 4111 is disposed within the heat dissipation pipe. The heat dissipation pipe includes a first pipe portion 431 and a second pipe portion 432. The heat conduction channel 4111 includes a first flow channel 4311 and a second flow channel 4321. The first pipe portion 431 defines the first flow channel 4311. The first pipe portion 431 extends through the interior of the second pipe portion 432. The second flow channel 4321 is formed between the outer wall of the first pipe portion 431 and the inner wall of the second pipe portion 432. The ends of the first pipe portion 431 and the second pipe portion 432 are connected, thereby connecting the first flow channel 4311 and the second flow channel 4321. The end of the second pipe portion 432 located within the accommodating chamber 101 is closed. The heat conduction medium circulates between the first flow channel 4311 and the second flow channel 4321. One end of the first pipe portion 431 and the other end of the second pipe portion 432 extend into the circulation tank 10, and the other end extends outside the circulation tank 10. After absorbing heat from the slurry, the heat-conducting medium in the second flow channel 4321 flows to the outside of the circulation tank 10 to dissipate heat. The cooled heat-conducting medium then flows from the first flow channel 4311 into the circulation tank 10. In some embodiments, after absorbing heat from the slurry, the heat-conducting medium in the second flow channel 4321 flows into the first flow channel 4311 and then flows through the first flow channel 4311 to the outside of the circulation tank 10 to dissipate heat. The cooled heat-conducting medium then flows from the second flow channel 4321 into the circulation tank 10.

[0047] The cross-sectional shape of the first tube portion 431 can be circular, elliptical, polygonal, etc. The cross-sectional shape of the second tube portion 432 can be circular, elliptical, polygonal, etc. The cross-sectional shape of the first tube portion 431 can be the same as or different from the cross-sectional shape of the second tube portion 432. In some embodiments, the second tube portion 432 can be provided with fins to increase the heat exchange efficiency between the second tube portion 432 and the slurry, thereby improving the heat dissipation effect.

[0048] See also Figure 5 In some embodiments, the first tube portion 431 is located outside the second tube portion 432. A first flow channel 4311 is defined in the first tube portion 431. A second flow channel 4321 is defined in the second tube portion 432. The end of the first tube portion 431 is connected to the end of the second tube portion 432. For example, the first tube portion 431 and the second tube portion 432 can be connected to form a U-shaped structure. In some embodiments, the first tube portion 431 and the second tube portion 432 can also be connected to form a V-shaped, wavy, or other structure, which is not specifically limited in this application.

[0049] In some embodiments, the heat dissipation structure 40 further includes a pumping member. The pumping member is located outside the circulation tank 10. The pumping member is used to extract the heat-conducting medium from one of the first flow channel 4311 and the second flow channel 4321, and pump the heat-conducting medium into the other of the first flow channel 4311 and the second flow channel 4321, thereby causing the heat-conducting medium to circulate between the first flow channel 4311 and the second flow channel 4321. In this way, the pumping member drives the heat-conducting medium to actively circulate within the heat-conducting channel 4111. By adjusting the circulation speed of the heat-conducting medium, the heat dissipation efficiency of the heat dissipation structure 40 can be adjusted to meet the heat dissipation requirements of the slurry at different dispersion stages, improve the temperature adjustment accuracy of the slurry, improve the temperature consistency of the slurry, and improve the quality of the slurry.

[0050] See also Figure 1 and Figure 2, the heat dissipation structure 40 includes a first heat dissipation member 411. The first heat dissipation member 411 is connected to the top cover 11 and extends along the first direction F1 in the accommodating cavity 101. For example, the first direction F1 can be parallel to the axial direction of the circulation tank 10. In some embodiments, the first direction F1 can be set at an angle to the axial direction of the circulation tank 10. In some embodiments, the first heat dissipation member 411 can also be set in a curved manner. For example, the first heat dissipation member 411 can be set in a spiral shape along the axial and circumferential directions of the circulation tank 10. In some embodiments, the first heat dissipation member 411 can also be set in a winding extension to increase the contact area between the first heat dissipation member 411 and the slurry. Among them, the distance between the heat dissipation structure 40 and the side wall 12 of the circulation tank 10 can refer to the distance between the first heat dissipation member 411 and the side wall 12 of the circulation tank 10. The distance between the heat dissipation structure 40 and the central axis C1 of the circulation tank 10 can refer to the distance between the first heat dissipation member 411 and the central axis C1 of the circulation tank 10.

[0051] A heat conduction channel 4111 is provided in the first heat sink 411. The heat conduction channel 4111 is extended along the extension direction of the first heat sink 411. The first heat sink 411 is constructed as a tubular structure. The cross-section of the first heat sink 411 can be circular, elliptical, polygonal, etc. One end of the first heat sink 411 extends into the circulation tank 10 and extends into the slurry, and the other end of the first heat sink 411 extends to the outside of the circulation tank 10. In some embodiments, the first heat sink 411 can be configured as a heat pipe. In some embodiments, the first heat sink 411 can be configured as a heat dissipation pipeline.

[0052] In some embodiments, the heat dissipation structure 40 further includes a second heat dissipation member 412. The second heat dissipation member 412 is connected to the first heat dissipation member 411 and extends along the second direction F2 in the accommodating cavity 101. The first direction F1 and the second direction F2 are arranged to intersect. For example, the first direction F1 and the second direction F2 can be arranged vertically. The second direction F2 can be parallel to the radial direction of the circulation tank 10. In some embodiments, the first direction F1 and the second direction F2 can also be arranged at an acute angle or an obtuse angle. In some embodiments, the second direction F2 can be arranged at an angle to the radial direction of the circulation tank 10. For example, the second heat dissipation member 412 is inclined relative to the first heat dissipation member 411 toward the top 102 or bottom 103 of the circulation tank 10, or toward the side wall 12 of the circulation tank 10. In some embodiments, the second heat dissipation member 412 is arranged to extend in a winding manner to increase the contact area between the second heat dissipation member 412 and the slurry. The second heat dissipation element 412 may be connected to the first segment 421 , or the second heat dissipation element 412 may be connected to the first tube portion 431 and / or the second tube portion 432 .

[0053] The second heat sink 412 is provided in a plurality, and the plurality of second heat sinks 412 are arranged at intervals along the first direction F1. The number of the second heat sinks 412 can be specifically set according to actual needs and is not specifically limited in this application. For example, the number of the second heat sinks 412 can be 2, 3, 4, 5, etc. In particular, when the dispersion structure 20 drives the slurry to circulate, the flow rate of the slurry near the bottom 103 of the circulation tank 10 is greater than the flow rate of the slurry near the top 102 of the circulation tank 10. The length of the second heat sink 412 near the bottom 103 of the circulation tank 10 is greater than or equal to the length of the second heat sink 412 near the top cover 11, and / or the spacing between two adjacent second heat sinks 412 decreases or becomes equal in the direction from the top cover 11 toward the bottom 103 of the circulation tank 10. This can increase the contact area between the second heat sink 412 and the high-flow slurry, thereby improving the heat dissipation efficiency of the second heat sink 412 to the slurry. The length of the second heat sink 412 may refer to the distance between the free end of the second heat sink 412 and the first heat sink 411, or the extended length of the second heat sink 412. The extended length of the second heat sink 412 is greater than the width of the first heat sink 411 along the radial direction of the circulation tank 10. Among the plurality of second heat sinks 412, along the first direction F1, the spacing between two adjacent second heat sinks 412 may decrease in an arithmetic progression, decrease in a geometric ratio, or decrease irregularly. Along the first direction F1, the lengths of the plurality of second heat sinks 412 may increase in an arithmetic progression, increase in a geometric ratio, or increase irregularly.

[0054] In some embodiments, the plurality of second heat sinks 412 include at least two groups, each group includes at least two second heat sinks 412, the lengths of the second heat sinks 412 in each group are the same, and the length of a group of second heat sinks 412 near the bottom 103 is greater than the length of a group of second heat sinks 412 near the top cover 11.

[0055] In some embodiments, a branch channel is provided in the second heat sink 412. The branch channel is connected to the heat conduction channel 4111. A heat conduction medium is provided in the heat conduction channel 4111 and the branch channel. The heat conduction medium can circulate between the branch channel and the heat conduction channel 4111, thereby conducting the heat of the second heat sink 412 to the first heat sink 411, and then conducting it to the outside of the circulation tank 10 through the first heat sink 411. Exemplarily, the number of branch channels can be set to one. In some embodiments, the number of branch channels can be set to multiple to improve the heat dissipation capacity of the second heat sink 412. The multiple branch channels are spaced apart, or the multiple branch channels are interconnected and staggered.

[0056] In some embodiments, a guide hole 4121 is provided on the second heat sink 412. The guide hole 4121 is provided through the second heat sink 412. It can be understood that when the slurry flows, due to the blocking effect of the second heat sink 412, the slurry will form a vortex area on the downstream side of the second heat sink 412 along the flow direction of the slurry. The vortex area is located on the side of the second heat sink 412 facing away from the inclined surface 3122. The slurry flow rate in the vortex area is low, and the slurry is retained, causing the slurry to easily adhere to the second heat sink 412, forming a fouling thermal resistance effect, thereby reducing the heat dissipation capacity of the second heat sink 412. When the slurry flows through the second heat sink 412, the guide hole 4121 can allow part of the slurry to flow to the downstream side of the second heat sink 412 along the flow direction of the slurry, thereby reducing the size of the vortex area, reducing the size of the pressure resistance caused by the slurry when flowing through the second heat sink 412, reducing the flow rate loss of the slurry, and the slurry flowing through the guide hole 4121 will promptly take away the slurry retained in the vortex area, reducing the slurry adhering to the second heat sink 412, reducing the dirt thermal resistance effect, and improving the heat dissipation capacity of the second heat sink 412. In addition, the guide hole 4121 can also cause the slurry to form a diversion, thereby improving the stirring and mixing effect of the slurry. Among them, the aperture of the guide hole 4121 can be specifically set according to actual needs and is not specifically limited in this application.

[0057] See also Figure 6 In some embodiments, the heat dissipation structure 40 is provided with a flow-guiding structure 4124 along the sidewall 12 of the circulation tank 10 in the circumferential direction. The flow-guiding structure 4124 is used to form turbulence near the surface of the heat dissipation structure 40 when the slurry flows through the surface of the heat dissipation structure 40, so as to reduce the fluid separation effect when the slurry flows through the heat dissipation structure 40, thereby reducing the size of the vortex area formed on the downstream side of the heat dissipation structure 40 in the flow direction of the slurry, reducing the size of the pressure resistance caused by the slurry when flowing through the heat dissipation structure 40, and thus reducing the flow rate loss of the slurry. In addition, the flow-guiding structure 4124 can also reduce the slurry adhering to the heat dissipation structure 40, reduce the thermal resistance effect of dirt, and increase the contact area between the heat dissipation structure 40 and the slurry, thereby improving the heat dissipation capacity of the heat dissipation structure 40.

[0058] The guide structure 4124 can be constructed as a guide groove and / or a guide protrusion on the heat dissipation structure 40. In some embodiments, the guide structure 4124 is constructed as a guide groove opened on the first heat dissipation member 411. A plurality of guide grooves are provided, and the plurality of guide grooves are spaced apart. In some embodiments, the guide structure 4124 is constructed as a guide protrusion protruding from the first heat dissipation member 411. A plurality of guide protrusions are provided, and the plurality of guide protrusions are spaced apart. In some embodiments, the guide structure 4124 can also be constructed as a plurality of guide grooves and a plurality of guide protrusions opened on the first heat dissipation member 411. A plurality of guide grooves and a plurality of guide protrusions are spaced apart. In some embodiments, the guide structure 4124 can also be constructed as a guide groove and / or a guide protrusion provided on the second heat dissipation member 412.

[0059] See also Figure 1 , a plurality of scraping blades 33 can be provided, and a plurality of scraping blades 33 are arranged at intervals along the circumference of the rotating shaft 31 to improve the scraping effect of the slurry. The scraping blade 33 includes a first paddle portion 331 and a second paddle portion 332. The first paddle portion 331 is connected to the rotating shaft 31. The second paddle portion 332 is connected to the end of the first paddle portion 331 away from the rotating shaft 31. The first paddle portion 331 is arranged close to the bottom wall 13 of the circulation tank 10. The first paddle portion 331 is used to scrape off the slurry adhered to the bottom wall 13. The second paddle portion 332 is arranged close to the side wall 12 of the circulation tank 10. The second paddle portion 332 is used to scrape off the slurry adhered to the side wall 12.

[0060] For example, on a projection plane perpendicular to the central axis C1 of the circulation tank 10, the orthographic projection of the first paddle portion 331 and the orthographic projection of the second paddle portion 332 are respectively along the radial direction of the circulation tank 10. In some embodiments, on a projection plane perpendicular to the central axis C1 of the circulation tank 10, the orthographic projection of the first paddle portion 331 is arranged in a spiral shape. In this way, when the rotating shaft 31 drives the first paddle portion 331 to rotate, the first paddle portion 331 can form a cutting effect on the slurry, thereby reducing the resistance of the slurry to the first paddle portion 331. In some embodiments, along the axial direction of the circulation tank 10, the second paddle portion 332 is arranged in a spiral shape. In this way, when the rotating shaft 31 drives the second paddle portion 332 to rotate, the second paddle portion 332 can form a cutting effect on the slurry, thereby reducing the resistance of the slurry to the second paddle portion 332. In some embodiments, the first paddle portion 331 and the second paddle portion 332 are respectively arranged in a spiral shape to reduce the resistance of the stirring paddle 30 when it rotates.

[0061] The first paddle portion 331 includes a first paddle segment 3311 and a second paddle segment 3312. The first paddle segment 3311 is connected to the rotating shaft 31 and is located on the side of the dispersion structure 20 away from the bottom wall 13 of the circulation tank 10. The first paddle segment 3311 is tilted relative to the rotating shaft 31 toward the bottom wall 13 of the circulation tank 10. The first paddle segment 3311 of the multiple wall-scraping blades 33 forms an avoidance space with the bottom wall 13 when rotating, and the dispersion structure 20 is located in the avoidance space, thereby avoiding interference between the wall-scraping blades 33 and the dispersion structure 20. The second paddle segment 3312 is connected to the end of the first paddle segment 3311 away from the rotating shaft 31, and is located between the dispersion structure 20 and the side wall 12 of the circulation tank 10. The second paddle segment 3312 is arranged close to the bottom wall 13 of the circulation tank 10. The second paddle segment 3312 is spaced apart from the dispersion structure 20 to reduce the second paddle segment 3312's blocking effect on the slurry discharged from the dispersion structure 20, thereby reducing slurry flow rate loss and improving the slurry circulation capacity within the circulation tank 10. The second paddle portion 332 is connected to the end of the second paddle segment 3312 away from the first paddle segment 3311. In some embodiments, the first paddle segment 3311 is positioned proximate to the dispersion structure 20 and is used to scrape off slurry adhering to the side of the dispersion structure 20 away from the bottom wall 13 of the circulation tank 10.

[0062] In some embodiments, the stirring paddle 30 also includes a scraping member 34. The scraping member 34 is provided on the scraping blade 33. The scraping member 34 is used to contact the inner wall of the circulation tank 10 and / or to contact the dispersion structure 20 to scrape the slurry. There are multiple scraping members 34. The scraping members 34 on different scraping blades 33 are set at different positions. When the stirring paddle 30 rotates, the scraping working surface formed by the scraping member 34 on the scraping blade 33 covers the side wall 12, the bottom wall 13 of the circulation tank 10 and the side surface of the dispersion structure 20 away from the bottom wall 13 of the circulation tank 10. In this way, when the stirring paddle 30 rotates, the scraping members 34 on different scraping blades 33 can scrape the slurry at different positions, thereby reducing the reaction force of the slurry borne by a single scraping blade 33 and avoiding the problem of bending or breaking of the scraping blade 33.

[0063] Please also refer to Figure 1 and Figure 7 In some embodiments, the stirring paddle 30 further includes a plurality of stirring portions 35 provided on the scraping blade 33. The plurality of stirring portions 35 are provided on the side of the second paddle portion 332 close to the central axis C1 of the circulation tank 10. The plurality of stirring portions 35 are arranged at intervals. A plurality of second heat sinks 412 are provided on the side of the first heat sink 411 close to the side wall 12 of the circulation tank 10. Along the axial direction of the circulation tank 10, the plurality of stirring portions 35 and the plurality of second heat sinks 412 are staggered. When the rotating shaft 31 drives the scraping blade 33 to rotate, the scraping blade 33 drives the stirring portion 35 to meet the second heat sink 412 and forms shear on the slurry, thereby improving the mixing uniformity of the slurry.

[0064] In some embodiments, the stirring paddle 30 further includes a plurality of stirring blades 32. The rotating shaft 31 extends in the axial direction of the circulation tank 10. The plurality of stirring blades 32 are respectively connected to the rotating shaft 31 and are arranged at intervals along the extension direction of the rotating shaft 31. The scraping blades 33 are spaced apart from the stirring blades 32 to avoid interference with the stirring blades 32. The stirring blades 32 are used to push the slurry to flow toward the dispersion structure 20. In some embodiments, the plurality of stirring blades 32 are also spaced apart along the circumferential direction of the rotating shaft 31. For example, the plurality of stirring blades 32 can be divided into multiple groups, and the multiple groups of stirring blades 32 are spaced apart along the circumferential direction of the rotating shaft 31, each group including multiple stirring blades 32, and the multiple stirring blades 32 in each group are spaced apart along the extension direction of the rotating shaft 31. The number of stirring blades 32 can be specifically set according to actual needs and is not specifically limited in this application. For example, the number of stirring blades 32 can be 6, 9, 12, etc.

[0065] Along the axial direction of the circulation tank 10, a plurality of stirring blades 32 and a plurality of second heat sinks 412 are staggered. When the rotating shaft 31 drives the stirring blades 32 to rotate, the stirring blades 32 meet the second heat sink 412 and shear the slurry, thereby improving the mixing uniformity of the slurry. In some embodiments, the plurality of stirring blades 32 are arranged in a spiral shape along the axial direction of the rotating shaft 31. When the rotating shaft 31 drives the stirring blades 32 to rotate, the plurality of stirring blades 32 meet the second heat sink 412 in turn, avoiding the concentrated encounter of the plurality of stirring blades 32 and the plurality of second heat sinks 412, thereby avoiding the concentrated shearing of the slurry by the plurality of stirring blades 32 and the plurality of second heat sinks 412, reducing the reaction force of the slurry on the stirring blades 32, and reducing the rotational resistance of the stirring blade 30. In addition, when the rotating shaft 31 drives the multiple stirring blades 32 to rotate, the multiple stirring blades 32 are arranged in a spiral shape, which can drive the slurry to flow along the axial direction of the rotating shaft 31, thereby driving the slurry to move toward the dispersion structure 20, thereby improving the circulation efficiency of the slurry in the circulation tank 10. In some embodiments, the arrangement direction of the multiple stirring blades 32 is parallel to the axial direction of the rotating shaft 31 to reduce the difficulty of installing the stirring blades 32.

[0066] The extension direction of the stirring blade 32 intersects with the extension direction of the rotating shaft 31. For example, the stirring blade 32 is extended along the radial direction of the rotating shaft 31. In some embodiments, the extension direction of the stirring blade 32 is at an acute angle to the axial direction of the rotating shaft 31. The stirring blade 32 is inclined toward the top 102 or the bottom 103 of the circulation tank 10. In some embodiments, the stirring blade 32 can also extend in a curved manner. When the rotating shaft 31 drives the stirring blade 32 to rotate, the stirring blade 32 cuts the slurry, thereby reducing the rotational resistance of the stirring blade 30. In some embodiments, the stirring blade 32 is arranged to extend in a winding manner to increase the length of the shear seam formed when the stirring blade 42 and the second heat sink 412 are intertwined, thereby improving the shear effect on the slurry.

[0067] The width direction of the cross section of the second heat sink 412 is tilted relative to the orthographic projection of the first direction F1 on the plane where the cross section of the second heat sink 412 is located, and / or the width direction of the cross section of the stirring blade 32 is tilted relative to the orthographic projection of the axial direction of the rotation shaft 31 on the plane where the cross section of the stirring blade 32 is located. That is, the width direction of the cross section of the second heat sink 412 is arranged at an angle to the first direction F1, and / or the width direction of the cross section of the stirring blade 32 is arranged at an angle to the axial direction of the rotation shaft 31.

[0068] In some embodiments, the width direction of the cross section of the stirring blade 32 is tilted relative to the orthographic projection of the axial direction of the rotating shaft 31 on the plane where the cross section of the stirring blade 32 is located. The stirring blade 32 can be constructed as a sheet-like structure. The thickness of the stirring blade 32 is less than the width. The cross section of the stirring blade 32 can be rectangular, elliptical, spindle-shaped, etc. The width direction of the cross section of the stirring blade 32 is the direction of the long side of the cross section. In this way, when the slurry collides with the stirring blade 32, the stirring blade 32 can push the slurry toward the dispersion structure 20 to promote the circulation and dispersion of the slurry. The tilt direction of the stirring blade 32 corresponds to the rotation direction of the stirring paddle 30. In some embodiments, from the top 102 of the circulation tank 10 toward the bottom 103, when the stirring paddle 30 rotates clockwise, the stirring blade 32 tilts in a left-hand direction. From the top 102 of the circulation tank 10 toward the bottom 103, along the clockwise direction of the rotating shaft 31, the stirring blade 32 tilts toward the top 102 of the circulation tank 10. In some embodiments, the stirring blade 32 tilts in a right-hand direction from the top 102 of the circulation tank 10 toward the bottom 103 when the stirring paddle 30 rotates counterclockwise. From the top 102 of the circulation tank 10 toward the bottom 103, along the counterclockwise direction of the rotation shaft 31, the stirring blade 32 tilts toward the top 102 of the circulation tank 10.

[0069] In some embodiments, the width direction of the cross section of the second heat sink 412 is tilted relative to the orthographic projection of the first direction F1 on the plane where the cross section of the second heat sink 412 is located. The second heat sink 412 can be constructed as a sheet structure. The thickness of the second heat sink 412 is less than the width. Among them, the cross section of the second heat sink 412 can be rectangular, elliptical, spindle-shaped, etc. The width direction of the cross section of the second heat sink 412 is the long side direction of the cross section. In this way, when the slurry collides with the second heat sink 412, the second heat sink 412 can guide the slurry so that the slurry flows toward the dispersion structure 20 to promote the circulation and dispersion of the slurry. Exemplarily, the cross section of the second heat sink 412 can extend in a straight line. In some embodiments, the cross section of the second heat sink 412 can also extend in an arc shape.

[0070] The inclination direction of the second heat sink 412 corresponds to the rotation direction of the stirring paddle 30. In some embodiments, from the top 102 of the circulation tank 10 toward the bottom 103, when the stirring paddle 30 rotates clockwise, the second heat sink 412 is inclined in a left-handed direction. Along the clockwise direction of the first heat sink 411, the second heat sink 412 is inclined 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 paddle 30 rotates counterclockwise, the second heat sink 412 is inclined in a right-handed direction. From the top 102 of the circulation tank 10 toward the bottom 103, along the counterclockwise direction of the first heat sink 411, the second heat sink 412 is inclined toward the top 102 of the circulation tank 10. Among them, the inclination direction of the stirring blade 32 is the same as the inclination direction of the second heat sink 412, so that the moving direction of the slurry pushed by the stirring blade 32 is the same as the moving direction of the slurry pushed by the second heat sink 412, which is conducive to the slurry flowing toward the dispersion structure 20, thereby improving the circulation efficiency of the slurry.

[0071] Please also refer to Figure 1 and Figure 8The second heat sink 412 is provided with an inclined surface 4122 on the side closest to the dispersion structure 20. When the slurry impacts the inclined surface 4122, the inclined surface 4122 exerts a reaction force on the slurry along the axial direction of the circulation tank 10, causing the slurry to flow toward the dispersion structure 20. In a plane perpendicular to the extension direction of the second heat sink 412, the cross-section of the second heat sink 412 includes an inclined side edge adjacent to the bottom 103 of the circulation tank 10. The inclined side edge extends along the second direction F2 to form the inclined surface 4122. The width of the second heat sink 412 is the extension direction of the inclined side edge. An acute angle α is formed between the inclined side edge and the first direction F1. For example, the acute angle α can be 45°, which provides the second heat sink 412 with better flow conductivity for the slurry. In one embodiment, the acute angle α can also be 25°, 30°, 35°, 40°, 50°, 55°, 60°, 65°, etc., and is not specifically limited in this application.

[0072] The distance between the end of the second heat sink 412 away from the first heat sink 411 and the rotating shaft 31 is greater than or equal to the distance between the end of the stirring blade 32 away from the rotating shaft 31 and the first heat sink 411. The distance between the end of the second heat sink 412 away from the first heat sink 411 and the rotating shaft 31 can be set according to actual needs and is not specifically limited in this application. The distance between the second heat sink 412 and the adjacent stirring blade 32 can be set according to actual needs and is not specifically limited in this application.

[0073] In some embodiments, the extension length of the second heat dissipation member 412 is greater than or equal to the extension length of the stirring blade 32. In some embodiments, the extension length of the stirring blade 32 is greater than or equal to the extension length of the second heat dissipation member 412.

[0074] The second heat sink 412 is spaced apart from the end of the first heat sink 411 and the rotating shaft 31. The stirring blade 32 is spaced apart from the scraping blade 33. The distance between the end of the second heat sink 412 away from the first heat sink 411 and the rotating shaft 31 is greater than the distance between the second heat sink 412 and the adjacent stirring blade 32. In this way, when the stirring blade 32 meets the second heat sink 412, the gap between the second heat sink 412 and the rotating shaft 31 can provide sufficient circulation space for the slurry, thereby reducing the rotational resistance of the stirring paddle 30.

[0075] In some embodiments, a through hole is provided on the stirring blade 32. It is understandable that when the slurry flows, due to the blocking effect of the stirring blade 32, the slurry will form a vortex area on the side downstream of the stirring blade 32 along the flow direction of the slurry, that is, the stirring blade 32 will form a vortex area on the side facing the top 102 of the circulation tank 10. The through hole can make the slurry flow through the surface of the stirring blade 32, so that part of the slurry flows through the through hole to the side downstream of the stirring blade 32 along the flow direction of the slurry, thereby reducing the size of the vortex area, reducing the size of the pressure resistance caused by the slurry when flowing through the stirring blade 32, reducing the flow rate loss of the slurry, and reducing or avoiding the jitter of the stirring blade 32 caused by the Karman vortex street effect, improving the stability and reliability of the stirring blade 30 when rotating, thereby improving the service life of the stirring blade 30. In addition, the through hole can also cause the slurry to form a diversion, thereby improving the stirring and mixing effect of the slurry. The diameter of the through hole can be set according to actual needs and is not specifically limited in this application.

[0076] In some embodiments, the rotating shaft 31 may include a first shaft and a second shaft. The first shaft is hollow, and the second shaft is inserted into the first shaft. The stirring blade 32 is connected to the first shaft. The scraping blade 33 is connected to the second shaft. The first shaft and the second shaft can rotate independently of each other so that the stirring blade 32 and the scraping blade 33 rotate at different speeds. In some embodiments, the rotating shaft 31 can also be configured as a single shaft body, and the stirring blade 32 and the scraping blade 33 are both connected to the rotating shaft 31, and the rotating shaft 31 drives the stirring blade 32 and the scraping blade 33 to rotate synchronously.

[0077] Please also refer to Figure 1 and Figure 9 In some embodiments, a guide groove 311 is provided in the rotating shaft 31. A guide sleeve 312 is provided in the guide groove 311. The guide sleeve 312 and the side wall of the guide groove 311 are separated to form a cooling channel 313. A cooling medium is provided in the cooling channel 313. The cooling medium is used to cool the rotating shaft 31, so that the rotating shaft 31 cools the slurry. The cooling medium can be a liquid or a gas. For example, the cooling medium can be water, oil, etc. After absorbing the heat of the slurry, the cooling medium in the cooling channel 313 flows to the outside of the circulation tank 10 to dissipate heat, and the cooled cooling medium flows from the guide sleeve 312 into the circulation tank 10.

[0078] The flow guide sleeve 312 can be rotatable or fixed relative to the rotating shaft 31. For example, the flow guide sleeve 312 is disposed on the top cover 11 and can rotate relative to the rotating shaft 31. This allows the flow guide sleeve 312 to remain stationary relative to the top cover 11 when the rotating shaft 31 rotates, thereby simplifying the assembly of the flow guide sleeve 312. The flow guide sleeve 312 and the top cover 11 are detachably fixed together, thereby facilitating operations such as assembly and replacement of the flow guide sleeve 312. In some embodiments, the flow guide sleeve 312 can be rotatably connected to the top cover 11.

[0079] Please also refer to Figure 1 、 Figure 10 and Figure 11 The dispersed structure 20 includes a stator 21 and a rotor 22. The stator 21 includes a stator disk 211 and at least one layer of stator retaining rings 212 arranged on the stator disk 211. The stator retaining rings 212 are provided with stator slots 2121. The rotor 22 includes a rotor disk 221 and at least one layer of rotor retaining rings 222 arranged on the rotor disk 221. The rotor retaining rings 222 are provided with rotor slots 2221. The rotor retaining rings 222 are located on the inner side and / or outer side of the stator retaining rings 212. An inlet 201 is provided on the stator disk 211. The stator slots 2121 on the outermost stator retaining ring 212 or the rotor slots 2221 on the outermost rotor retaining ring 222 are configured as the inlet 202. At least one of the stator retaining rings 212 and the rotor retaining rings 222 is provided in multiple layers. For example, the rotor retaining ring 222 is provided as a single layer, and the stator retaining ring 212 is provided as a double layer, and the rotor retaining ring 222 is located between the two layers of stator retaining rings 212. The stator slots 2121 on the outermost stator retaining ring 212 are configured as the outflow port 202. The slurry flows in from the inflow port 201 and flows out from the outflow port 202. The stator 21 is fixed relative to the circulation tank 10, and the rotor 22 is rotatable relative to the circulation tank 10. When the rotor 22 rotates, the slurry generates a negative pressure near the rotor retaining ring 222, causing the slurry to flow from the inflow port 201 into the interior of the dispersion structure 20, and the slurry is thrown out from the outflow port 202 through the centrifugal action of the rotor retaining ring 222 on the slurry. When the slurry flows through the rotor slots 2221 on the rotor retaining ring 222 and the stator slots 2121 on the stator retaining ring 212, the rotor retaining ring 222 and the stator retaining ring 212 shear and disperse the slurry.

[0080] The rotor 22 also includes pusher blades 223. The pusher blades 223 are fixedly connected to the rotor disk 221. The pusher blades 223 and the rotor disk 221 can be fixedly connected together by welding, screwing, clamping, etc., or the pusher blades 223 can also be integrally formed with the rotor disk 221. The pusher blades 223 extend in a spiral shape. Along the axial direction of the circulation tank 10, the pusher blades 223 are roughly conical. The pusher blades 223 can be a clockwise spiral or a counterclockwise spiral. When the rotor 22 rotates, the pusher blades 223 are used to push the slurry to flow along the axial direction and radial direction of the circulation tank 10, so that the slurry flows from the inlet 201 into the interior of the dispersion structure 20.

[0081] The dispersed structure 20 also includes a mounting base 224. The mounting base 224 includes a first base body 2241, a second base body 2242 and a connecting member 2243. The first base body 2241 is fixedly connected to the circulation tank 10. The second base body 2242 is located on the side of the first base body 2241 away from the bottom wall 13 of the circulation tank 10. The connecting member 2243 is located between the first base body 2241 and the second base body 2242, and abuts against the first base body 2241 and the second base body 2242 respectively. The first base body 2241, the second base body 2242 and the connecting member 2243 are fixedly connected together. For example, the first base body 2241, the second base body 2242 and the connecting member 2243 can be fixedly connected together by screws or bolts. For example, the second base 2242 is provided with a screw hole, the connector 2243 is hollow, the first base 2241 is provided with a threaded hole, and the screw is passed through the threaded hole and the connector 2243 and is threadedly connected to the threaded hole. In some embodiments, the first base 2241, the second base 2242, and the connector 2243 can be fixedly connected together by welding or clamping, or the first base 2241, the second base 2242, and the connector 2243 can be integrally formed.

[0082] The stator 21 and the rotor 22 are both located between the first base 2241 and the second base 2242. The stator 21 is fixedly connected to the first base 2241 and / or the second base 2242. For example, the stator 21 is fixedly connected to the second base 2242. The stator 21 and the second base 2242 can be fixedly connected together by welding, clamping, screwing, etc., or the stator 21 and the second base 2242 can be integrally formed.

[0083] A connecting hole 2244 is provided on the second seat body 2242. The connecting hole 2244 is connected to the inlet 201. The pusher blade 223 is provided in the connecting hole 2244 and extends between the first seat body 2241 and the second seat body 2242. The portion of the pusher blade 223 located in the connecting hole 2244 and on the side of the second seat body 2242 away from the first seat body 2241 is used to push the slurry to flow along the axial direction of the circulation tank 10, so that the dispersion structure 20 sucks the slurry from the connecting hole 2244 and the inlet 201. The portion of the pusher blade 223 located between the first seat body 2241 and the second seat body 2242 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 2221 and the stator slot 2121. The pusher blade 223 is used to increase the flow velocity of the slurry, thereby increasing the flow rate of the slurry in the dispersion structure 20 and improving the dispersion and circulation efficiency.

[0084] The dispersed structure 20 also includes a drive shaft 23 and a driver 24. The driver 24 is in driving connection with the drive shaft 23. The drive shaft 23 is fixedly connected to the rotor 22. The driver 24 is configured to rotate the drive shaft 23, thereby causing the drive shaft 23 to rotate the rotor 22 relative to the stator 21. The first base 2241 has a mounting hole formed therein, into which the drive shaft 23 is inserted. The driver 24 is disposed externally of the circulation tank 10.

[0085] In some embodiments, the dispersion structure 20 further includes a drainage hood 25. The drainage hood 25 is provided at the connecting hole 2244 and the inlet 201. The drainage hood 25 is fixedly connected to the side of the second seat body 2242 away from the first seat body 2241. The drainage hood 25 and the second seat body 2242 can be fixedly connected together by welding, clamping, screwing, etc., or the drainage hood 25 and the second seat body 2242 can be integrally formed. The drainage hood 25 is arranged in an annular shape. The pusher blades 223 are passed through the drainage hood 25. The drainage hood 25 is used to limit and guide the slurry. When the pusher blades 223 push the slurry to move, the drainage hood 25 can reduce the loss of the slurry in the radial direction under the action of centrifugation, so that the slurry remains between the drainage hood 25 and the pusher blades 223, thereby improving the axial pushing effect of the pusher blades 223 on the slurry and improving the suction flow of the dispersion structure 20.

[0086] In some embodiments, the pulping apparatus 100 further includes a heat dissipation jacket 50 disposed on the circulation tank 10. The heat dissipation jacket 50 surrounds the sidewalls 12 and / or the bottom wall 13. A cooling medium is passed through the heat dissipation jacket 50 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.

[0087] In some embodiments, the pulping equipment 100 further includes a temperature measuring element. The temperature measuring element is connected to the top cover 11 and extends at least partially into the accommodating chamber 101. The end of the temperature measuring element is immersed in the slurry and is used to measure the temperature of the slurry. In some of the described embodiments, the distance between the end of the temperature measuring element and the bottom wall 13 is less than the distance between the end of the temperature measuring element and the top cover 11. The ratio of the distance between the end of the temperature measuring element and the liquid surface of the slurry to the distance between the liquid surface of the slurry and the bottom wall 13 is greater than 0.2. For example, the ratio of the distance between the end of the temperature measuring element and the liquid surface of the slurry to the distance between the liquid surface of the slurry and the bottom wall 13 can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, etc. Wherein, 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 slurry liquid level and the bottom wall 13 of the circulation tank 10 refers to the distance between the bottom wall 13 near the dispersion structure 20 and the liquid level when the slurry in the circulation tank 10 is in a static state, along the axial direction of the circulation tank 10. In some embodiments, the temperature measuring element may also be connected to the stirring paddle 30 or to the side wall 12 of the circulation tank 10.

[0088] 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 accommodating chamber 101. The opening of the liquid inlet pipe in the accommodating 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 preventing gas from mixing into the liquid material.

[0089] In some embodiments, the pulping apparatus 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 material into the circulation tank 10. The feeding structure can be configured as a twin-screw feeding mechanism.

[0090] 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 a receiving chamber (101) for receiving slurry is provided in the circulation tank (10); a dispersion structure (20) located in the accommodating chamber (101) and arranged at the bottom (103) of the circulation tank (10), the dispersion structure (20) being used to disperse the slurry and allow the slurry to circulate in the circulation tank (10); a stirring paddle (30) accommodated in the accommodating chamber (101), the stirring paddle (30) comprising a rotating shaft (31) and a scraping blade (33), the rotating shaft (31) extending along the axial direction of the circulation tank (10), the scraping blade (33) being connected to the rotating shaft (31) and used for scraping off the slurry adhered to the inner wall of the circulation tank (10); The heat dissipation structure (40) is at least partially accommodated in the accommodating cavity (101) and is used to cool the slurry.

2. The pulping device (100) according to claim 1, characterized in that A heat conduction channel (4111) is provided in the heat dissipation structure (40), a heat conduction medium is provided in the heat conduction channel (4111), and the heat conduction medium circulates in the heat conduction channel (4111).

3. The pulping device (100) according to claim 2, characterized in that The heat dissipation structure (40) includes a heat pipe, the heat conduction channel (4111) is arranged in the heat pipe, and the heat conduction channel (4111) is configured as a capillary channel, or the heat dissipation structure (40) includes a heat dissipation pipe, and the heat conduction channel (4111) is arranged in the heat dissipation pipe.

4. The pulping device (100) according to claim 1, characterized in that The heat dissipation structure (40) comprises a first heat dissipation member (411) and a plurality of second heat dissipation members (412), wherein the first heat dissipation member (411) is connected to the circulation tank (10) and extends along a first direction (F1) in the accommodating cavity (101), and the plurality of second heat dissipation members (412) are respectively connected to the first heat dissipation member (411) and are arranged at intervals along the first direction (F1), and the second heat dissipation members (412) extend along a second direction (F2) in the accommodating cavity (101), and the first direction (F1) and the second direction (F2) intersect.

5. The pulping device (100) according to claim 1, characterized in that The wall-scraping blade (33) includes a first paddle portion (331) and a second paddle portion (332), wherein the first paddle portion (331) is connected to the rotating shaft (31), and the second paddle portion (332) is connected to an end of the first paddle portion (331) away from the rotating shaft (31), the first paddle portion (331) is arranged close to the bottom wall (13) of the circulation tank (10), and the second paddle portion (332) is arranged close to the side wall (12) of the circulation tank (10).

6. The pulping device (100) according to claim 5, characterized in that The first paddle portion (331) includes a first paddle segment (3311) and a second paddle segment (3312), the first paddle segment (3311) is connected to the rotating shaft (31), and is located on the side of the dispersion structure (20) away from the bottom wall (13) of the circulation tank (10), the second paddle segment (3312) is connected to one end of the first paddle segment (3311) away from the rotating shaft (31), and is located between the dispersion structure (20) and the side wall (12) of the circulation tank (10), and the second paddle portion (332) is connected to the end of the second paddle segment (3312) away from the first paddle segment (3311).

7. The pulping device (100) according to claim 4, characterized in that The stirring paddle (30) further includes a plurality of stirring blades (32), which are respectively connected to the rotating shaft (31) and are arranged at intervals along the extension direction of the rotating shaft (31). The extension direction of the stirring blades (32) intersects with the extension direction of the rotating shaft (31). Along the axial direction of the circulation tank (10), the plurality of stirring blades (32) and the plurality of second heat dissipating members (412) are staggered.

8. The pulping device (100) according to claim 7, characterized in that The plurality of stirring blades (32) are arranged in a spiral shape along the axial direction of the rotating shaft (31), or the arrangement direction of the plurality of stirring blades (32) is parallel to the axial direction of the rotating shaft (31).

9. The pulping device (100) according to claim 7, characterized in that The width direction of the cross section of the stirring blade (32) is tilted relative to the orthographic projection of the axial direction of the rotating shaft (31) on the plane where the cross section of the stirring blade (32) is located, and / or the width direction of the cross section of the second heat sink (412) is tilted relative to the orthographic projection of the first direction (F1) on the plane where the cross section of the second heat sink (412) is located.

10. The pulping device (100) according to claim 9, characterized in that The inclination direction of the stirring blade (32) relative to the axial direction of the rotating shaft (31) is the same as the inclination direction of the second heat dissipating element (412) relative to the first direction (F1).

11. The pulping device (100) according to claim 4, characterized in that The stirring paddle (30) further comprises a plurality of stirring portions (35) arranged on the scraping blade (33), and along the axial direction of the circulation tank (10), the plurality of stirring portions (35) and the plurality of second heat dissipating elements (412) are arranged alternately.

12. The pulping device (100) according to claim 1, characterized in that A guide groove (311) is provided on the rotating shaft (31), a guide sleeve (312) is provided in the guide groove (311), the guide sleeve (312) and the side wall of the guide groove (311) are spaced apart to form a cooling channel (313), and the guide sleeve (312) can be rotatably or fixedly arranged relative to the rotating shaft (31).

13. The pulping device (100) according to claim 1, characterized in that The dispersed structure (20) comprises a stator (21) and a rotor (22), wherein the stator (21) comprises a stator disk (211) and at least one layer of stator retaining rings (212) disposed on the stator disk (211), wherein the stator retaining rings (212) are provided with stator slots (2121), and the rotor (22) comprises a rotor disk (221) and at least one layer of rotor retaining rings (222) disposed on the rotor disk (221), wherein the rotor retaining rings (222) are provided with rotor slots ( 2221), the rotor retaining ring (222) is located on the inner side and / or outer side of the stator retaining ring (212), an inlet (201) is provided on the stator disc (211), the stator slot (2121) on the outermost stator retaining ring (212) or the rotor slot (2221) on the outermost rotor retaining ring (222) is configured as an outflow outlet (202), and the slurry flows in from the inflow inlet (201) and flows out from the outflow outlet (202).

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