Pulping machine

Abstract

The utility model provides a pulping machine, and belongs to the technical field of batteries. The pulping machine comprises a powder feeding cavity; the pipe cleaning device is used for cleaning powder attached to the inner wall surface of the powder feeding cavity; the mixing impeller is used for stirring powder, and the rotating shaft is used for driving the pipe cleaning device and the mixing impeller to rotate. The pipe cleaning device comprises a scraper assembly coaxially and fixedly connected with the rotating shaft, and the scraper assembly extends in the radial direction and the axial direction of the rotating shaft.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] Pulping machines are widely used in the process of battery production. Their main function is to prepare positive and negative electrode slurries for batteries. In the process of preparing slurry, some powder materials may need to be dispersed to ensure that the powder can be evenly and fully mixed with water or other additives to obtain high-quality slurry. For this reason, a powder dispersing head is usually provided in the powder inlet chamber of the pulping machine. The powder dispersing head can be in the form of an extended rotating blade, which disperses the powder through high-speed rotation and transports it downward to produce high-quality slurry.

[0004] However, during the long production process, powder may accumulate on the inner wall of the powder inlet chamber of the pulping machine, narrowing the net cross-section of the powder inlet chamber, causing problems such as slow material drop and blockage. Since the pulping machine does not have the function of cleaning the inner wall, it needs to be cleaned manually. Frequent manual cleaning is time-consuming and labor-intensive and poses safety hazards. Utility Model Content

[0005] The present application aims to solve at least one of the technical problems in the background technology. To this end, one purpose of the present application is to provide a pulping machine to improve the problems in the related technology.

[0006] The embodiment of the first aspect of the present application provides a pulping machine. The pulping machine includes a powder inlet chamber; a pipe cleaning device for cleaning powder attached to the inner wall of the powder inlet chamber; a mixing impeller for stirring the powder, and a rotating shaft for driving the pipe cleaning device and the mixing impeller to rotate. The pipe cleaning device includes a scraper assembly coaxially fixedly connected to the rotating shaft, and the scraper assembly extends radially and axially along the rotating shaft.

[0007] In the technical solution of the embodiment of the present application, a scraper assembly extending axially along the rotating shaft is arranged on the rotating shaft. When the rotating shaft rotates, the scraper can rotate with the rotating shaft relative to the inner wall of the powder feed chamber, so as to automatically clean the powder that may be attached to the inner wall of the powder feed chamber, thereby solving the problem of powder accumulation that may occur on the inner wall of the powder chamber after long-term use.

[0008] In some embodiments, the scraper assembly includes: a sleeve, the sleeve includes a first mounting hole, and the sleeve is sleeved on the rotating shaft through the first mounting hole; an extension portion, the extension portion extends radially outward from the circumferential outer surface of the sleeve along the rotating shaft; and a scraper, the scraper is arranged at the radial outer edge of the extension portion, the scraper includes an upper end of the scraper and a lower end of the scraper, and the upper end of the scraper is located in front of the lower end of the scraper in the rotation direction of the rotating shaft. Therefore, by arranging the upper end of the scraper in front of the lower end of the scraper in the rotation direction of the rotating shaft, it is possible to prevent the powder falling from the upper side from accumulating under the scraper, and to a certain extent, the efficiency of the scraper in cleaning the wall of the powder inlet chamber can be improved.

[0009] In some embodiments, the scraper further includes a front edge of the scraper and a rear end of the scraper, wherein the front edge of the scraper is the front edge of the scraper in the rotation direction; and the rear end of the scraper is the rearmost surface of the scraper in the rotation direction. In the cross section perpendicular to the axis of the rotating shaft, the size of the scraper gradually increases along the direction from the front edge of the scraper to the rear end of the scraper. Thus, in the rotation direction, the front edge of the scraper and the rear end of the scraper form a wedge-shaped structure as a whole, which is conducive to prying up the powder attached to the wall of the powder inlet chamber, and to a certain extent improves the cleaning efficiency.

[0010] In some embodiments, the scraper includes an upper end surface, and the cleaning device is connected to the sleeve via a smooth curved surface. Thus, the upper end surface is connected to the sleeve via a smooth curved surface, so that the powder sliding down from the upper end surface can fall into the powder inlet chamber via the smooth curved surface, avoiding accumulation inside the extension portion, thereby improving the cleaning efficiency to a certain extent.

[0011] In some embodiments, there is a gap between the scraper and the inner wall of the powder feeding chamber, thereby preventing the scraper from directly contacting the inner wall of the powder feeding chamber, which is beneficial to improving the service life of the scraper.

[0012] In some embodiments, the gap between the scraper and the inner wall of the powder feeding chamber is less than or equal to 5 mm. Thus, while preventing the scraper from directly contacting the inner wall of the powder feeding chamber, the 5 mm gap prevents the gap from being too large, thereby increasing the service life of the scraper and ensuring the cleaning effect.

[0013] In some embodiments, the scraper assembly includes at least two scrapers, and the at least two scrapers are configured to be rotationally symmetrical around the axis of the rotating shaft. Thus, providing at least two scrapers that are rotationally symmetrical around the axis of the rotating shaft is beneficial to improving the scraping effect, and is also beneficial to reducing the vibration that may be generated when the rotating shaft rotates.

[0014] In some embodiments, the first mounting hole includes a keyway, and the sleeve is connected to a key block on the rotating shaft through the keyway. Thus, through the key connection, relative displacement between the sleeve and the rotating shaft can be avoided while transmitting torque, and installation and removal of the cleaning device can also be facilitated.

[0015] In some embodiments, the cleaning device further includes a second mounting hole, the second mounting hole penetrates the side wall of the sleeve in the radial direction of the sleeve, and the cleaning device is connected to the rotating shaft via a first connecting member passing through the second mounting hole. Thus, by further adding the second mounting hole and the first connecting member, the connection strength between the cleaning device and the rotating shaft is improved to a certain extent.

[0016] In some embodiments, the second mounting hole passes through the side wall and the extension of the sleeve. Thus, when the first connector passes through the second mounting hole and is connected to the shaft, the second mounting hole that passes through the sleeve and the extension provides a larger connection area, thereby improving the connection strength between the cleaning device and the shaft to a certain extent.

[0017] In some embodiments, the scraper is made of silicone or rubber. Therefore, the scraper is made of silicone or rubber, which can prevent the scraper from scratching the inner wall of the powder inlet chamber to a certain extent.

[0018] In some embodiments, the pulping machine further comprises a stopper, which is sleeved on the top of the rotating shaft and is used to limit the movement of the cleaning device along the axial direction of the rotating shaft. Thus, it is possible to prevent the cleaning device from sliding along the axial direction of the rotating shaft when in operation to a certain extent, and prevent the powder scraping effect from being affected by the relative sliding.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0021] Figure 1 A schematic diagram of the structure of a pulping machine according to some embodiments of the present application;

[0022] Figure 2 This is a schematic diagram of the structure of a pipe cleaning device in some embodiments of the present application;

[0023] Figure 3 A side view of a pipe cleaning device according to some embodiments of the present application;

[0024] Figure 4 A top view of a pipe cleaning device according to some embodiments of the present application.

[0025] Description of reference numerals:

[0026] Pulping machine 100, powder inlet chamber 10, cleaning device 20, mixing impeller 30, rotating shaft 40, limiting block 50;

[0027] Bushing 21, first mounting hole 22, extension 23, scraper 24, scraper upper end 241, scraper lower end 242, scraper front edge 251, scraper rear end 252, upper end surface 26, keyway 27, second mounting hole 28;

[0028] Direction of rotation S. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0031] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0035] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0038] As mentioned above, in the battery production process, the pulping machine is an important equipment for preparing the positive and negative electrode slurry of the battery. As the use time increases, powder may adhere to the inner wall surface of the powder inlet chamber of the pulping machine, narrowing the net cross-section of the powder inlet chamber, causing slow material dropping, blockage and other problems. Since the pulping machine does not have the function of cleaning the inner wall surface, it needs to be cleaned manually. Frequent manual cleaning is time-consuming and labor-intensive and poses a safety hazard. Therefore, it is necessary to set a pipe cleaning device in the powder inlet chamber of the pulping machine to automatically clean the powder that may be attached to the inner wall surface of the powder inlet chamber.

[0039] The pulping machine disclosed in the embodiment of the present application can be used for, but not limited to, preparing positive and negative electrode slurries in the battery field, and can also be used for preparing slurries in other similar industries. In this way, it is conducive to automatically cleaning the powder that may be attached to the inner wall surface of the powder inlet chamber.

[0040] The embodiment of the present application provides a pulping machine 100 . Figure 1 Schematic diagram of the structure of the pulping machine 100 according to some embodiments of the present application. Figure 1 As shown, the pulping machine 100 comprises: a powder inlet chamber 10; a cleaning device 20 for cleaning powder attached to the inner wall of the powder inlet chamber 10; a mixing impeller 30 for stirring the powder, and a rotating shaft 40 for driving the cleaning device 20 and the mixing impeller 30 to rotate. The cleaning device 20 comprises a scraper assembly 200 coaxially fixedly connected to the rotating shaft 40, and the scraper assembly 200 extends in the radial direction and axial direction of the rotating shaft 40.

[0041] refer to Figure 1 The pulping machine 100 includes a powder feeding chamber 10, a pipe cleaning device 20, a mixing impeller 30 and a rotating shaft 40 in a vertical direction from top to bottom. The powder feeding chamber 10 is a cavity with an upward opening, and its function is to accommodate the powder to be dispersed. The pipe cleaning device 20 is used to clean the powder attached to the inner wall surface of the powder feeding chamber 10, and the mixing impeller 30 is used to stir the powder, and the pipe cleaning device 20 and the mixing impeller 30 are both arranged on the same rotating shaft 40 to be driven to rotate by the rotating shaft 40. The other end of the rotating shaft 40 is connected to the motor, so that it is driven to rotate by the motor.

[0042] Scraper assembly 200( Figure 1 The scraper assembly 200 is coaxially fixedly connected to the rotating shaft 40 and extends in the radial and axial directions of the rotating shaft 40. In the radial direction of the rotating shaft 40, the positioning of the scraper assembly 200 is close to or in contact with the inner wall surface of the powder inlet chamber 10, so that when the rotating shaft 40 drives the scraper assembly 200 to rotate, the scraper assembly 200 rotates along the inner wall surface of the powder inlet chamber 10, thereby cleaning the powder attached to the inner wall surface of the powder inlet chamber 10.

[0043] Therefore, by arranging a scraper assembly extending axially along the rotating shaft on the rotating shaft, when the rotating shaft rotates, the scraper can rotate with the rotating shaft relative to the inner wall surface of the powder inlet chamber, so as to automatically clean the powder that may be attached to the inner wall surface of the powder inlet chamber, thereby solving the problem of powder accumulation that may occur on the inner wall surface of the powder chamber after long-term use.

[0044] Figure 2 Schematic diagram of the structure of the cleaning device 20 of some embodiments of the present application. According to some embodiments of the present application, the scraper assembly 200 includes: a sleeve 21, the sleeve 21 includes a first mounting hole 22, and the sleeve 21 is sleeved on the rotating shaft 40 through the first mounting hole 22; an extension 23, the extension 23 extends outward from the circumferential outer surface of the sleeve 21 along the radial direction of the rotating shaft 40; and a scraper 24, the scraper 24 is arranged on the radial outer edge of the extension 23, and the scraper 24 includes a scraper upper end 241 and a scraper lower end 242, and the scraper upper end 241 is located in front of the scraper lower end 242 in the rotation direction S of the rotating shaft 40.

[0045] like Figure 2 As shown, the pipe cleaning device 20 includes a sleeve 21, a first mounting hole 22, a protruding portion 23 and a scraper 24. The sleeve 21 has a first mounting hole 22 inside, and is sleeved on the rotating shaft 40 through the first mounting hole 22, so that the pipe cleaning device 20 can rotate with the rotating shaft 40. The protruding portion 23 is a structure extending along the radial direction of the rotating shaft 40 on the outer surface of the rotating shaft 40, and its function is to provide a mounting position for the scraper 24. The extension length of the protruding portion 23 can be set according to the inner diameter of the powder feeding chamber 10, and the protruding portion 23 can be in contact with the powder feeding chamber 10 in the radial direction of the rotating shaft 40, or the protruding portion 23 can be in contact with the powder feeding chamber 10 in the radial direction of the rotating shaft 40. There is a certain gap between the protruding portion 23 and the powder feeding chamber 10 in the radial direction of the rotating shaft 40. The scraper 24 is used to scrape off the powder attached to the inner wall surface of the powder feeding chamber 10. The scraper 24 is disposed at the radial outer edge of the extension portion 23 . The scraper 24 includes a scraper upper end 241 and a scraper lower end 242 . The scraper upper end 241 is located in front of the scraper lower end 242 in the rotation direction S of the shaft 40 .

[0046] Figure 3 FIG. 2 is a side view of a pipe cleaning device 20 according to some embodiments of the present application. Figure 3 For example, the rotation direction S of the scraper 24 driven by the rotating shaft 40 is counterclockwise, and the scraper upper end 241 is located in the counterclockwise direction in front of the scraper lower end 242. Therefore, the powder scraped by the scraper upper end 241 can avoid contacting the scraper lower end 242 as much as possible during the vertical falling process, thereby avoiding affecting the scraper lower end 242 from scraping the powder contacting with it.

[0047] Therefore, by arranging the upper end of the scraper in front of the lower end of the scraper in the rotation direction of the rotating shaft, the scraper lower end is not affected in scraping away the powder in contact with it, and the powder falling from above can be reduced or avoided from accumulating under the scraper, which can improve the efficiency of the scraper in cleaning the wall of the powder inlet chamber to a certain extent.

[0048] According to some embodiments of the present application, the scraper 24 also includes a scraper leading edge 251 and a scraper rear end 252, the scraper leading edge 251 is the frontmost edge of the scraper 24 in the rotation direction S, and the scraper rear end 252 is the rearmost surface of the scraper 24 in the rotation direction S, wherein, in a cross section perpendicular to the axis of the rotating shaft 40, the size of the scraper 24 gradually increases along the direction from the scraper leading edge 251 to the scraper rear end 252.

[0049] like Figure 2As shown, the scraper 24 also includes a scraper front edge 251 and a scraper rear end 252. The scraper front edge 251 is the frontmost edge of the scraper 24 in the rotation direction S, and the scraper rear end 252 is the rearmost surface of the scraper 24 in the rotation direction S. The thickness gradually increases from the scraper front edge 251 to the scraper rear end 252. It can be seen that the scraper front edge 251 and the scraper rear end 252 form a wedge-shaped structure. After the scraper front edge 251 is inserted into the powder material adhesion layer on the inner wall surface of the powder inlet chamber 10, the scraper rear end 252 is also inserted into the powder material adhesion layer as it rotates further. Since the thickness of the scraper rear end 252 is relatively large, the powder material adhesion layer can be pried up to a certain extent, which is conducive to the separation of the powder material.

[0050] Therefore, the scraper rear end 252 has a thickness greater than the scraper front edge 251, so that in the rotation direction S, the scraper front edge 251 and the scraper rear end 252 form a wedge-shaped structure as a whole, which is conducive to prying up the powder attached to the wall of the powder inlet chamber 10, thereby improving the cleaning efficiency to a certain extent.

[0051] According to some embodiments of the present application, the scraper 24 includes an upper end surface 26 , and the upper end surface 26 is connected to the shaft sleeve 21 through a smooth curved surface.

[0052] like Figure 2 As shown, the upper end surface 26 is the top surface of the extension portion 23 in the vertical direction. When the scraper 24 rotates with the rotating shaft 40, part of the powder may fall through the upper end surface 26 to the inner side of the extension portion 23. By setting the upper end surface 26 to be connected to the shaft sleeve 21 through a smooth curved surface, the accumulation of the fallen powder inside the extension portion 23 can be avoided.

[0053] Thus, the upper end surface 26 is connected to the shaft sleeve 21 through a smooth curved surface, so that the powder sliding down from the upper end surface can fall into the powder inlet chamber 10 through the smooth curved surface to avoid accumulation inside the extension part, thereby improving the cleaning efficiency to a certain extent.

[0054] According to some embodiments of the present application, there is a gap between the scraper 24 and the inner wall of the powder feeding chamber 10. Thus, the scraper 24 can be prevented from directly contacting the inner wall surface of the powder feeding chamber 10, which is beneficial to improving the service life of the scraper 24.

[0055] According to some embodiments of the present application, the gap between the scraper 24 and the inner wall of the powder feeding chamber 10 is less than or equal to 5 mm. Thus, while preventing the scraper 24 from directly contacting the inner wall surface of the powder feeding chamber 10, the gap of 5 mm prevents the gap from being too large, thereby improving the service life of the scraper 24 while ensuring the cleaning effect.

[0056] According to some embodiments of the present application, the scraper assembly 200 includes at least two scrapers 24 , and the at least two scrapers 24 are configured to be rotationally symmetric around the axis of the rotating shaft 40 .

[0057] like Figure 2 As shown, the scraper assembly 200 includes two scrapers 24, which are rotationally symmetrical around the axis of the rotating shaft. In some embodiments, the scraper assembly 200 may include three scrapers 24, which may be distributed at equal angles with an interval of 120 degrees.

[0058] Therefore, providing at least two scrapers 24 that are rotationally symmetrical around the axis of the rotating shaft 40 is beneficial to improving the scraping effect, and is also beneficial to reducing the vibration that may be generated when the rotating shaft 40 rotates.

[0059] Figure 4 It is a top view of the pipe cleaning device 20 according to some embodiments of the present application. According to some embodiments of the present application, the first mounting hole 22 includes a keyway 27 , and the shaft sleeve 21 is connected to the key block on the rotating shaft 40 through the keyway 27 .

[0060] like Figure 4 As shown, the first mounting hole 22 on the sleeve 21 has a keyway 27 , and the keyway 27 can cooperate with a key block (not shown) on the rotating shaft 40 , so that the rotating shaft 40 drives the keyway 27 .

[0061] Thus, by means of the key connection, relative sliding between the shaft sleeve 21 and the rotating shaft 40 can be avoided while transmitting the torque, and the installation and disassembly of the pipe cleaning device 20 can also be easily completed.

[0062] According to some embodiments of the present application, the pipe cleaning device 20 further includes a second mounting hole 28 , which penetrates the side wall of the sleeve 21 in the radial direction of the sleeve 21 , and the pipe cleaning device 20 is connected to the rotating shaft 40 via a first connecting member passing through the second mounting hole 28 .

[0063] like Figure 4 As shown, the second mounting hole 28 penetrates the side wall of the sleeve 21 along the radial direction of the rotating shaft 40, thereby providing a channel for the first connecting member (not shown) to achieve the connection between the cleaning device 20 and the rotating shaft 40. The first connecting member can be a screw, a stud and a pin. It can be understood that the present application does not limit the form of the first connecting member.

[0064] Therefore, by further adding the second mounting hole 28 and the first connecting member, the connection strength between the pipe cleaning device 20 and the rotating shaft 40 is improved to a certain extent.

[0065] According to some embodiments of the present application, the second mounting hole 28 passes through the side wall of the sleeve 21 and the extension portion 23 .

[0066] like Figure 4 As shown, the second mounting hole 28 penetrates the side wall of the sleeve 21 and the protruding portion 23 along the radial direction of the rotating shaft 40 .

[0067] Therefore, when the first connecting member passes through the second mounting hole 28 to connect with the rotating shaft 40, the second mounting hole 28 that passes through the side wall of the sleeve 21 and the extension portion 23 provides a larger connection area, which improves the connection strength between the pipe cleaning device 20 and the rotating shaft 40 to a certain extent.

[0068] According to some embodiments of the present application, the scraper 24 is made of silicone or rubber. Therefore, the material of the scraper 24 is selected to include silicone or rubber, which can prevent the scraper 24 from scratching the inner wall surface of the powder inlet chamber 10 to a certain extent. It will be understood that silicone or rubber are both known materials in the art.

[0069] According to some embodiments of the present application, the pulping machine 100 further includes a limit block 50 , which is sleeved on the top of the rotating shaft 40 and is used to limit the axial movement of the pipe cleaning device 20 along the rotating shaft 40 .

[0070] like Figure 1 As described above, the limit block 50 is sleeved on the top of the cleaning device 20, which can limit the relative sliding of the cleaning device 20 along the rotating shaft 20. Therefore, it can prevent the cleaning device from unnecessary relative sliding along the axial direction of the rotating shaft during operation to a certain extent, and prevent the powder scraping effect from being affected by the relative sliding.

[0071] The technical solution of the present application is further described below through a specific embodiment.

[0072] like Figure 1 As shown, the pulping machine 100 includes a powder inlet chamber 10, a pipe cleaning device 20, a mixing impeller 30, a rotating shaft 40 and a limit block 50 in sequence from top to bottom in the vertical direction.

[0073] The powder inlet chamber 10 is a cavity with an upward opening, and its function is to accommodate the powder to be broken up. The cleaning device 20 is used to clean the powder attached to the inner wall surface of the powder inlet chamber 10, and the mixing impeller 30 is used to stir the powder, and the cleaning device 20 and the mixing impeller 30 are both arranged on the same rotating shaft 40 to be driven to rotate by the rotating shaft 40. The other end of the rotating shaft 40 is connected to the motor, so as to be driven to rotate by the motor. The limit block 50 is sleeved above the cleaning device 20, which can limit the relative sliding of the cleaning device 20 along the rotating shaft 20.

[0074] like Figure 2 As shown, the pipe cleaning device 20 includes a sleeve 21 , a first mounting hole 22 , an extension portion 23 , a scraper 24 , a scraper rear end 25 and an upper end surface 26 .

[0075] The sleeve 21 has a first mounting hole 22 inside, and is sleeved on the rotating shaft 40 through the first mounting hole 22, so that the pipe cleaning device 20 can rotate with the rotating shaft 40. The extension portion 23 is a structure extending along the radial direction of the rotating shaft 40 on the outer surface of the rotating shaft 40, and its function is to provide an installation position for the scraper 24. The extension length of the extension portion 23 can be set according to the inner diameter of the powder feeding chamber 10, and the extension portion 23 can be in contact with the powder feeding chamber 10 in the radial direction of the rotating shaft 40, or the extension portion 23 can be in contact with the powder feeding chamber 10 in the radial direction of the rotating shaft 40. There is also a certain gap between the extension portion 23 and the powder feeding chamber 10 in the radial direction of the rotating shaft 40.

[0076] The scraper 24 is used to scrape off the powder attached to the inner wall surface of the powder inlet chamber 10. The scraper 24 is arranged at the outer edge of the extension portion 23 in the radial direction, and the scraper 24 includes a scraper upper end 241, a scraper lower end 242, a scraper front edge 251 and a scraper rear end 252. The scraper upper end 241 is located in front of the scraper lower end 242 in the rotation direction S of the rotating shaft 40. The scraper front edge 251 is the frontmost edge of the scraper 24 in the rotation direction S, and the scraper rear end 252 is the rearmost surface of the scraper 24 in the rotation direction S. In the cross section perpendicular to the axis of the rotating shaft 40, the size of the scraper 24 gradually increases along the direction from the scraper front edge 251 to the scraper rear end 252.

[0077] The scraper front edge 251 and the scraper rear end 252 form a wedge-shaped structure. After the scraper front edge 251 is inserted into the powder material adhesion layer on the inner wall surface of the powder inlet chamber 10, the scraper rear end 252 is also inserted into the powder material adhesion layer as it rotates further. Since the scraper rear end 252 is thicker, it is helpful to pry up the powder material adhesion layer to a certain extent, which is helpful for the powder to be separated.

[0078] The upper end surface 26 is the top surface of the extension portion 23 in the vertical direction. When the scraper 24 rotates with the rotating shaft 40, part of the powder may fall through the upper end surface 26 to the inner side of the extension portion 23. By setting the upper end surface 26 to be connected to the sleeve 21 through a smooth curved surface, the accumulation of the fallen powder inside the extension portion 23 can be avoided.

[0079] The pipe cleaning device 20 further includes a first mounting hole 22 and a second mounting hole 28 .

[0080] The first mounting hole 22 includes a keyway 27, and the sleeve 21 is connected to the key block on the rotating shaft 40 through the keyway 27. Thus, through the key connection, relative sliding between the sleeve 21 and the rotating shaft 40 can be avoided while transmitting torque, and the installation and removal of the cleaning device 20 are also convenient.

[0081] The second mounting hole 28 simultaneously penetrates the shaft sleeve 21 and the extension 23 along the radial direction of the shaft sleeve 21, and the cleaning device 20 is connected to the rotating shaft 40 via the first connecting member passing through the second mounting hole 28. Therefore, when the first connecting member passes through the second mounting hole 28 and is connected to the rotating shaft 40, the second mounting hole 28 that simultaneously penetrates the shaft sleeve 21 and the extension 23 provides a larger connection area, thereby improving the connection strength between the cleaning device 20 and the rotating shaft 40 to a certain extent.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A pulping machine, characterized in that: include: Powder inlet chamber (10); A pipe cleaning device (20) for cleaning powder adhered to the inner wall surface of the powder inlet chamber; A mixing impeller (30) for mixing powder, and The rotating shaft (40) is used to drive the cleaning device and the mixing impeller to rotate. The pipe cleaning device (20) comprises a scraper assembly (200) coaxially fixedly connected to the rotating shaft (40), and the scraper assembly (200) extends in the radial direction and the axial direction of the rotating shaft (40).

2. The pulping machine according to claim 1, characterized in that: The scraper assembly (200) comprises: A shaft sleeve (21), the shaft sleeve (21) comprising a first mounting hole (22), and the shaft sleeve is sleeved on the rotating shaft (40) through the first mounting hole (22); a protruding portion (23), the protruding portion (23) extending outward from a circumferential outer surface of the sleeve (21) in a radial direction of the rotating shaft (40); and A scraper (24), wherein the scraper (24) is arranged on the radial outer edge of the protruding portion (23), and the scraper (24) comprises a scraper upper end (241) and a scraper lower end (242), wherein the scraper upper end is located in front of the scraper lower end in the rotation direction (S) of the rotating shaft.

3. The pulping machine according to claim 2, characterized in that: The scraper (24) further comprises: a scraper leading edge (251), the scraper leading edge (251) being the frontmost edge of the scraper (24) in the rotation direction (S); and a scraper rear end (252), the scraper rear end (252) being the rearmost surface of the scraper (24) in the rotation direction (S), In which, in a cross section perpendicular to the axis of the rotating shaft (40), the size of the scraper (24) gradually increases along the direction from the scraper front edge (251) to the scraper rear end (252).

4. The pulping machine according to claim 2, characterized in that: The scraper (24) further comprises an upper end surface (26), and the upper end surface (26) is connected to the shaft sleeve (21) via a smooth curved surface.

5. The pulping machine according to any one of claims 1 to 4, characterized in that: There is a gap between the scraper (24) and the inner wall of the powder feeding chamber (10).

6. The pulping machine according to claim 5, characterized in that: The gap between the scraper (24) and the inner wall of the powder feeding chamber (10) is less than or equal to 5 mm.

7. The pulping machine according to any one of claims 2 to 4, characterized in that The scraper assembly (200) includes at least two scrapers (24), and the at least two scrapers (24) are configured to be rotationally symmetrical around the axis of the rotating shaft (40).

8. The pulping machine according to any one of claims 2 to 4, characterized in that The first mounting hole (22) comprises a keyway (27), and the shaft sleeve (21) is connected to a key block on the rotating shaft (40) via the keyway.

9. The pulping machine according to any one of claims 2 to 4, characterized in that The pipe cleaning device (20) further comprises a second mounting hole (28), the second mounting hole penetrating the side wall of the shaft sleeve (21) in a radial direction, and the pipe cleaning device is connected to the rotating shaft via a first connecting member passing through the second mounting hole.

10. The pulping machine according to claim 9, characterized in that The second mounting hole (28) passes through the side wall of the shaft sleeve (21) and the protruding portion (23).

11. The pulping machine according to any one of claims 1 to 4, characterized in that The scraper (24) is made of silicone or rubber.

12. The pulping machine according to any one of claims 1 to 4, characterized in that Also includes: A limit block is sleeved on the top of the rotating shaft (40) and is used to limit the movement of the pipe cleaning device (20) along the axial direction of the rotating shaft.

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