Grinding cylinder and grinding equipment

Abstract

The invention discloses a grinding cylinder and grinding equipment. The grinding cylinder comprises a grinding cylinder body and a gas sealing piece. The grinding cylinder is provided with a grinding cavity. And the air-tight sealing piece is arranged at one end of the grinding cylinder body along the axial direction of the grinding cylinder. The airtight sealing piece comprises a first section and a second section, and the first section and the second section are arranged in the circumferential direction of the grinding cylinder and located above the second section. The first section is provided with a plurality of air guide holes communicated with the grinding cavity. By the adoption of the grinding cylinder, the discharging effect of ground materials is improved, the materials are prevented from being over-ground, and the quality of the materials is improved.

Description

Technical Field

[0001] The present application relates to the technical field of material grinding, and in particular to a grinding cylinder and a grinding device. Background Art

[0002] The grinding equipment includes a driver, an agitator and a grinding cylinder. The grinding cylinder contains grinding media and materials. The driver is used to drive the agitator to agitate the grinding media and materials so that the grinding media and materials move relative to each other, thereby grinding the materials. The existing grinding equipment also includes an air blowing structure, which is used to blow air into the grinding cylinder to blow the materials out of the grinding cylinder. However, the air blowing holes of the existing air blowing structure are evenly arranged along the circumference of the grinding cylinder, so that the airflow blown out of the air blowing holes arranged in the lower half of the grinding cylinder is difficult to play an auxiliary feeding role due to the obstruction of the grinding media, resulting in a waste of resources and shortening the contact time between the materials in the lower half of the grinding cylinder and the grinding media, thereby affecting the fineness of the product. Summary of the invention

[0003] In view of this, one purpose of the present application is to provide a grinding cylinder and grinding equipment to solve the technical problem that the air blowing holes of the air blowing structure in the prior art are evenly arranged along the circumference of the grinding cylinder, resulting in the air flow blown out of the air blowing holes arranged in the lower half of the grinding cylinder being difficult to play an auxiliary feeding role due to the obstruction of the grinding medium, resulting in waste of resources and shortening the contact time between the material in the lower half of the grinding cylinder and the grinding medium, thereby affecting the fineness of the product.

[0004] In a first aspect, an embodiment of the present application provides a grinding cylinder, comprising a grinding cylinder body and an air seal. The grinding cylinder body is provided with a grinding chamber. The air seal is provided at one end of the grinding cylinder body along the axial direction of the grinding cylinder. The air seal comprises a first section and a second section. The first section and the second section are arranged along the circumferential direction of the grinding cylinder and are located above the second section. The first section is provided with a plurality of air guide holes. The plurality of air guide holes are connected to the grinding chamber.

[0005] In combination with the first aspect, in certain implementations of the first aspect, the plurality of air guide holes are arranged at intervals along the circumferential direction of the grinding cylinder.

[0006] In combination with the first aspect, in certain implementations of the first aspect, an arc formed by connecting the centers of the plurality of air guide holes is a first arc, a central angle corresponding to the first arc is a first angle, and the first angle is 45°-225°.

[0007] In combination with the first aspect, in certain implementations of the first aspect, an arc formed by connecting the centers of two adjacent air guide holes is a second arc, a central angle corresponding to the second arc is a second angle, and the second angle is 5°-45°.

[0008] In combination with the first aspect, in certain implementations of the first aspect, a diameter of the air guide hole is 4 mm-7 mm.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the air seal includes an end cover and an air guide plate, the air guide plate is arranged on a side of the end cover close to the grinding chamber, and forms an air supply channel between the end cover and the end cover, the air supply channel is connected to the plurality of air guide holes, and the air guide plate includes the first section and the second section.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the air guide plate includes a substrate and a surrounding plate arranged on the surface of the substrate facing away from the grinding chamber, a plurality of the air guide holes are arranged on the substrate, and the substrate and the surrounding plate form an air guide cavity connected to the air guide holes.

[0011] In combination with the first aspect, in certain implementations of the first aspect, a plurality of air inlet holes connected to the air guide cavity are provided on the enclosure, and the plurality of air inlet holes are connected to the air guide cavity and the air supply channel.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the air guide plate further includes a reinforcing rib, the reinforcing rib is disposed on a surface of the substrate facing away from the grinding chamber and is located on an inner side of the enclosure, and the plurality of air guide holes are disposed on the reinforcing rib.

[0013] In combination with the first aspect, in certain implementations of the first aspect, along the axial direction of the grinding cylinder, the height of the reinforcing rib protruding from the substrate is a first height, the height of the surrounding plate protruding from the substrate is a second height, and the first height is less than the second height.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the air seal is used to be rotatably connected to the stirring shaft, and the arc formed by the center connection of the multiple air guide holes is a first arc. Along the circumferential direction of the grinding cylinder, the first arc includes a first end and a second end that are relatively arranged, and the first end and the second end are arranged in sequence along the rotation direction of the stirring shaft. Along the gravity direction of the grinding cylinder, the first end is higher than the second end.

[0015] In combination with the first aspect, in certain implementations of the first aspect, a plane perpendicular to the central axis of the grinding cylinder is defined as a projection plane, and the plurality of air guide holes are located in the first section; when the stirring shaft rotates counterclockwise, the projection of the first arc in the projection plane is located to the left of the projection of the first section in the projection plane, and when the stirring shaft rotates clockwise, the projection of the first arc in the projection plane is located to the right of the projection of the first section in the projection plane.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the grinding cylinder further includes an adjustment plate, the adjustment plate is rotatable relative to the air sealing member, and the adjustment plate is used to block a portion of the air guide holes.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the arc formed by connecting the centers of the multiple air guide holes is a first arc line, the first arc line includes a first arc segment and a second arc segment, the first arc segment and the second arc segment are arranged along the circumferential direction of the grinding cylinder, and the adjustment plate is used to block the air guide holes corresponding to the first arc segment or the air guide holes corresponding to the second arc segment.

[0018] In a second aspect, an embodiment of the present application provides a grinding device, comprising a stirring shaft and a grinding cylinder as described above, wherein the stirring shaft is rotatably disposed in the grinding cylinder.

[0019] The grinding cylinder and grinding equipment provided by the present application, on the one hand, are based on arranging the air seal at one end of the grinding cylinder along the axial direction of the grinding cylinder, so that most of the gas can flow toward the discharge side of the grinding chamber, avoiding gas waste, reducing energy loss and production costs, and improving the gas conveying effect and efficiency on materials; on the other hand, based on arranging the air guide holes on the first section located above the second section, it is avoided that the gas blown out of the air guide holes arranged at the bottom of the air seal is difficult to play an auxiliary feeding role and cause a waste of resources due to the obstruction of the grinding medium, thereby improving the discharge effect of the ground material, reducing the risk of over-grinding of the material, improving the quality of the ground material, and improving resource utilization, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0021] Figure 1It is a partial cross-sectional view of the grinding equipment provided in the embodiment of the present application.

[0022] Figure 2 It is a structural schematic diagram of the partial structure of the grinding cylinder of the grinding equipment provided in the first embodiment of the present application.

[0023] Figure 3 yes Figure 2 A partial cross-sectional view of the local structure of the grinding cylinder of the grinding equipment along line AA.

[0024] Figure 4 yes Figure 2 A schematic structural diagram of the first perspective of the air guide plate of the grinding cylinder of the grinding device.

[0025] Figure 5 yes Figure 4 A partial cross-sectional view of the air guide plate in FIG.

[0026] Figure 6 yes Figure 2 A schematic structural diagram of the air guide plate of the grinding cylinder of the grinding device from a second perspective.

[0027] Figure 7 yes Figure 4 A schematic structural diagram of another embodiment of the air guide plate of the grinding cylinder of the grinding device in FIG.

[0028] Figure 8 It is a structural schematic diagram of the partial structure of the grinding cylinder of the grinding equipment provided in the second embodiment of the present application.

[0029] Fig. 9 yes Figure 1 Magnified view of the discharge paddle of the grinding equipment.

[0030] Description of main reference numerals: grinding device-1000; drive-110; bearing seat-120; bearing-130; stirring shaft-200; stirring paddle-210; discharge paddle-220; base-221; protrusion-222; grinding cylinder-300; grinding cylinder-10; grinding chamber-101; feeding port-102; discharge port-103; exhaust port-104; air seal-30; air supply channel-301; end cover-31; positioning groove-3101; air guide plate-32; air guide cavity-3201; through hole-3202; first section-321; second section-3 22; base plate-323; reinforcing rib-324; enclosure-325; air inlet-3251; mounting protrusion-326; air guide hole-33; air guide hole group-330; first hole-3301; second hole-3302; first arc line-331; first end-3311; second end-3312; first arc segment-3313; second arc segment-3314; second arc line-332; adjustment plate-35; separator-50; screen-51; rotation direction-F; center axis-P; axial direction-X; radial direction-Y; circumferential direction-Z; first angle-α; second angle-β.

[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 the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] It is understood that the terms in the specification and claims of the present application and the above-mentioned drawings are only for describing specific embodiments and are not intended to limit the present application. The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. Unless the context clearly states otherwise, the singular forms "one" and "the" are also intended to include plural forms. The term "including" and any of their variations are intended to cover non-exclusive inclusions. In addition, the present application can be implemented in a variety of different forms and is not limited to the embodiments described in this embodiment. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of the present application, in which the words indicating the orientation such as upper, lower, left, and right are only for the position of the structure shown in the corresponding drawings. In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set on..." 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; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be a connection between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] The following description is a preferred embodiment of the present invention, but the above description is for the purpose of explaining the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

[0035] See also Figure 1 , Figure 1 1 is a partial cross-sectional view of a grinding device 1000 provided in an embodiment of the present application. The grinding device 1000 includes a stirring shaft 200 and a grinding cylinder 300. The stirring shaft 200 is rotatably arranged in the grinding cylinder 300. The grinding cylinder 300 contains grinding media and materials to be ground. The stirring shaft 200 is used to stir the grinding media and the materials to be ground. As a result, the materials to be ground and the grinding media collide and rub against each other to grind the materials to be ground with larger particle sizes into materials with smaller particle sizes, thereby achieving the particle size and uniformity required for the materials.

[0036] For the accuracy of description, please refer to the directions in this article. Figure 1For reference, the "axial direction X" refers to the direction parallel to the central axis P of the grinding cylinder 300, that is, the left-right direction (where the positive direction of the X axis is left); the term "radial direction Y" refers to the direction perpendicular to the central axis P of the grinding cylinder 300, that is, the radial direction along the cross section of the grinding cylinder 300, and is also the up-down direction (where the positive direction of the axis is up); the term "circumferential direction Z" refers to the circumferential direction of the grinding cylinder 300, that is, the direction around the central axis P of the grinding cylinder 300. Among them, the axial direction X, radial direction Y and circumferential direction Z together constitute the three orthogonal directions of the grinding cylinder 300. The axial direction X, radial direction Y and circumferential direction Z of the grinding cylinder 300 can be customized according to the specific structure of the product and the perspective of the drawings, and this application does not make specific restrictions. For the convenience of description, the directions such as up, down, left and right in this application are relative positions and do not constitute a limitation.

[0037] Exemplarily, in this embodiment, the grinding device 1000 is configured as a horizontal grinding device 1000. Specifically, the central axis P of the grinding cylinder 300 is parallel to the horizontal plane.

[0038] The grinding device 1000 further includes a driver 110. The driver 110 is in transmission connection with the stirring shaft 200. The driver 110 is used to drive the stirring shaft 200 to rotate. One end of the stirring shaft 200 is inserted into the grinding cylinder 300, and one end of the stirring shaft 200 is inserted outside the grinding cylinder 300 and connected to the driver 110.

[0039] In some embodiments, the grinding device 1000 further includes a bearing seat 120 and a bearing 130. The bearing 130 is mounted on the bearing seat 120 and sleeved on the outside of the stirring shaft 200. Thus, the bearing 130 reduces friction and wear, makes the rotation smoother, reduces the mechanical load friction coefficient of the device during the transmission process, thereby reducing energy consumption, and further extending the service life of the grinding device 1000.

[0040] In this embodiment, the grinding cylinder 300 is configured with a cylindrical barrel, thereby improving the smoothness of the movement of the grinding medium and the material to be ground in the grinding cylinder 300, reducing the wear of the grinding cylinder 300, extending the service life of the grinding cylinder 300 and the grinding medium, and improving the uniformity of the material to be ground after being ground. The radial cross-section of the grinding cylinder 300 is circular. In other embodiments, the grinding cylinder 300 can also be configured as, but not limited to, a spherical barrel, a prismatic barrel or other regular or irregular barrels, which are not specifically limited in the embodiments of the present application.

[0041] The grinding cylinder 300 is provided with a grinding chamber 101. The grinding chamber 101 is used to accommodate materials and grinding media. The end of the grinding cylinder 300 along the axial direction X of the grinding cylinder 300 is provided with a feed port 102, and the other end of the grinding cylinder 300 along the axial direction X of the grinding cylinder 300 is provided with a discharge port 103. The feed port 102 and the discharge port 103 are connected to the grinding chamber 101.

[0042] The stirring shaft 200 is coaxially arranged with the grinding cylinder 300. Of course, in some embodiments, the stirring shaft 200 and the grinding cylinder 300 can also be eccentrically arranged. A plurality of stirring paddles 210 are arranged on the stirring shaft 200. The stirring paddles 210 are used to stir the material to be ground and the grinding medium so that the material to be ground can be dispersed, sheared and ground.

[0043] The materials to be ground include but are not limited to battery materials, food materials, pharmaceutical materials, fertilizer materials, building materials, etc., and the embodiments of the present application do not limit the materials to be ground. For example, in the embodiments of the present application, the materials to be ground are battery materials. Battery materials are, for example, but not limited to positive electrode materials, negative electrode materials, conductive agents or dispersants, etc.; or, various materials are mixed to form a battery mixture.

[0044] Grinding media is a small ball or bead-like object used to grind and disperse particulate materials. The material of the grinding media includes but is not limited to at least one of zirconium oxide, aluminum oxide and zirconium silicate. The grinding media usually adopts a structure with high hardness, good wear resistance, chemical stability, and can be applied to a variety of grinding application scenarios.

[0045] It should be noted that Figure 1 The purpose is only to schematically describe the arrangement between the stirring shaft 200 and the grinding cylinder 300, and it is not to specifically limit the connection position, connection relationship and specific structure of each component. Figure 1 The structure of the grinding device 1000 is only shown in the embodiment of the present application, and does not constitute a specific limitation on the grinding device 1000. In other embodiments of the present application, the grinding device 1000 may include Figure 1 More or fewer components, or combinations of certain components, or different components, such as the grinding device 1000 may also include but are not limited to a gas collecting device, a temperature sensor, etc. The gas collecting device is used to collect the gas exhausted from the grinding cylinder 300. The temperature sensor is used to detect the temperature inside the grinding cylinder 300.

[0046] Please also read Figure 1 , Figure 2 and Figure 3 , Figure 2 is a structural schematic diagram of a partial structure of a grinding cylinder 300 of a grinding device 1000 provided in the first embodiment of the present application; Figure 3 yes Figure 2 A partial cross-sectional view of the local structure of the grinding cylinder 300 of the grinding device 1000 along the AA line. The grinding cylinder 300 includes a grinding cylinder body 10 and an air seal 30. The air seal 30 is arranged at one end of the grinding cylinder body 10 along the axial direction X of the grinding cylinder 300. The air seal 30 includes a first section 321 and a second section 322. The first section 321 and the second section 322 are arranged along the circumferential direction Z of the grinding cylinder 300 and are located above the second section 322. The first section 321 is provided with a plurality of air guide holes 33. The plurality of air guide holes 33 are connected to the grinding chamber 101.

[0047] The grinding cylinder 300 and the grinding device 1000 provided in the present application, on the one hand, are based on the air seal 30 being arranged at one end of the grinding cylinder body 10 along the axial direction X of the grinding cylinder 300, so that most of the gas can flow toward the discharge side of the grinding chamber 101, thereby avoiding gas waste, reducing energy loss and production cost, and improving the gas conveying effect and conveying efficiency of the material; on the other hand, based on the air guide hole 33 being arranged on the first section 321 located above the second section 322, it is avoided that the gas blown out of the air guide hole 33 arranged at the bottom of the air seal 30 is difficult to play the role of auxiliary feeding due to the obstruction of the grinding medium and causes the problem of waste of resources, thereby improving the discharge effect of the ground material, reducing the risk of the material being over-ground, improving the quality of the ground material, and improving the resource utilization rate, reducing the production cost; on the other hand, when the gas blown into the grinding cylinder 300 by the air guide hole 33 adopts a cold air source, the cold air source can also assist in cooling the ground material, avoiding the problem of the ground material being denatured due to high temperature, and improving the quality of the material.

[0048] It should be noted that the first section 321 being located above the second section 322 means that the lowest point of the first section 321 in the gravity direction of the grinding cylinder 10 is located above the lowest point of the second section 322 in the gravity direction of the grinding cylinder 10. For example, the first section 321 being located above the second section 322 may include that the entire area corresponding to the first section 321 is located above the entire area corresponding to the second section 322; or, it may also include that the entire area corresponding to the first section 321 is located above at least a portion of the area corresponding to the second section 322, that is, at least a portion of the second section 322 is located below the first section 321.

[0049] The other end of the grinding cylinder 300 along the axial direction X of the grinding cylinder 300 is provided with an exhaust port 104. The exhaust port 104 and the discharge port 103 are provided independently of each other. For example, in this embodiment, the exhaust port 104 is located above the discharge port 103, so that the material can be quickly discharged from the discharge port 103 under the action of gravity, and the gas is discharged from the exhaust port 104, thereby reducing the dust generated during the discharge process of the material.

[0050] The gas blown from the air guide hole 33 to the grinding cylinder 300 can also be provided by an air supply device. The air supply device can directly provide natural wind or a cold air source. Of course, in some embodiments, a cooling device is provided on the conveying path of the air supply device, and the cooling device cools the gas provided by the air supply device. The air supply device can be, but is not limited to, a fan, an air conditioner, and other devices.

[0051] The gas seal 30 is provided with an air supply channel 301. Exemplarily, in the present embodiment, the gas seal 30 includes an end cover 31 and an air guide plate 32. The air guide plate 32 is provided on a side of the end cover 31 close to the grinding chamber 101, and forms an air supply channel 301 between the end cover 31. The air guide plate 32 includes a first section 321 and a second section 322. Thus, the air guide plate 32 is provided on a side of the end cover 31 close to the grinding chamber 101, so that most of the gas can flow toward the discharge side of the grinding chamber 101, avoiding gas waste, reducing energy loss and production costs, and improving the gas conveying effect and efficiency of the material. Of course, in some embodiments, the end cover 31 is directly provided with the air supply channel 301, that is, the air supply channel 301 is independent of the air guide plate 32.

[0052] For example, in this embodiment, the end cap 31 and the air guide plate 32 are independently arranged. A positioning groove 3101 is arranged on the side of the end cap 31 facing the air guide plate 32, and the air guide plate 32 is accommodated in the positioning groove 3101, thereby improving the assembly efficiency between the air guide plate 32 and the end cap 31. The positioning groove 3101 is connected to the air supply channel 301, so as to achieve air sealing between the connection gap between the air guide plate 32 and the end cap 31, prevent the material from entering the end cap 31 from the connection gap between the air guide plate 32 and the end cap 31, and improve the use safety and reliability of the grinding device 1000.

[0053] Of course, in some embodiments, the end cap 31 and the air guide plate 32 may be sealed and connected by a seal, thereby preventing the material in the grinding chamber 101 from entering the end cap 31 from between the end cap 31 and the air guide plate 32, thereby improving the safety and reliability of the grinding device 1000. The end cap 31 and the air guide plate 32 may also be integrally formed, that is, the end cap 31 and the air guide plate 32 are connected to form an integral structure.

[0054] In this embodiment, a plurality of air guide holes 33 are arranged at intervals along the circumferential direction Z of the grinding cylinder 300. Thus, on the one hand, the smoothness and uniformity of the gas flow at the top of the grinding chamber 101 are improved, and the conveying effect and efficiency of the ground material lifted above the grinding medium are improved; on the other hand, stress concentration on the air guide plate 32 is avoided, the structural strength of the air guide plate 32 is improved, and the service life of the air guide plate 32 is extended. The plurality of air guide holes 33 are arranged at equal intervals along the circumferential direction Z of the grinding cylinder 300. Of course, in some embodiments, the plurality of air guide holes 33 can also be dispersed on the air guide plate 32 along the grinding cylinder 300.

[0055] In this embodiment, along the radial direction Y of the air guide plate 32, the plurality of air guide holes 33 form a row of air guide hole groups 330. Specifically, the plurality of air guide holes 33 are all arranged on the same arc line that is concentric with the air guide plate 32. Thus, the structural strength of the air guide plate 32 is enhanced, and the difficulty of manufacturing the air guide plate 32 is reduced.

[0056] Of course, in some embodiments, along the radial direction Y of the air guide plate 32, multiple air guide holes 33 form multiple rows of air guide hole groups 330. Specifically, multiple air guide hole groups 330 are arranged at intervals along the radial direction Y of the air guide plate 32. Multiple air guide holes 33 corresponding to different air guide hole groups 330 are arranged on different arc lines concentric with the air guide plate 32. Multiple air guide holes 33 corresponding to each air guide hole group 330 are arranged on the same arc line concentric with the air guide plate 32. The number of air guide hole groups in two adjacent rows may be the same; or the number of air guide hole groups in two adjacent rows may be different. The air guide holes 33 in two adjacent rows of air guide hole groups are staggered along the radial direction Y of the grinding cylinder 300. Specifically, any one of the air guide holes 33 in one row of air guide hole groups is located between two corresponding adjacent air guide holes 33 in another row of air guide hole groups. Of course, the multiple air guide holes 33 in one row of air guide hole groups and the multiple air guide holes 33 in another row of air guide hole groups are arranged one by one along the radial direction Y of the grinding cylinder 300. The line connecting the center of any air guide hole 33 in one row of air guide hole groups and the center of the corresponding air guide hole 33 in another row of air guide hole groups passes through the center of the air guide plate 32.

[0057] The number and arrangement of the air guide holes 33 provided on the air guide plate 32 can be set according to actual conditions, and are not specifically limited in the embodiment of the present application. For example, in this embodiment, the number of the air guide holes 33 is set to 9. For example, in some embodiments, the number of the air guide holes 33 can also be set to, but not limited to, 2, 3, 4, 5, 12, or more than 12, etc.

[0058] Please also refer to 2 and Figure 4 , Figure 4 yes Figure 2Schematic diagram of the structure of the air guide plate 32 of the grinding cylinder 300 of the grinding device 1000 from the first perspective. The arc formed by connecting the centers of the multiple air guide holes 33 is the first arc 331. The central angle corresponding to the first arc 331 is the first angle α, and the first angle α is 45°-225°. Therefore, in the embodiment of the present application, the length of the arc formed by the center connection line of the multiple air guide holes 33 is set within a suitable range, so that the flow area of ​​the gas can cover the ground material raised above the grinding medium, so that the ground material stirred and raised by the stirring shaft 200 can be blown by the air flow blown out of the air hole, so as to achieve the auxiliary feeding effect, avoid the powder material from being over-grinded, and thus improve the gas to the material The conveying effect and conveying efficiency. The first angle α is, for example, but not limited to 45°, 60°, 80°, 100°, 120°, 140°, 160°, 180°, 200°, 220° or 225°, etc.

[0059] In some embodiments, the first angle α is 45°-90°, thereby preventing the gas introduced by the air guide hole 33 from being blocked by the grinding medium and thus being difficult to play an auxiliary feeding role and causing a waste of resources. At the same time, the ground material stirred and lifted by the stirring shaft 200 can be blown by the air flow blown out of the air hole, thereby achieving an auxiliary feeding function and avoiding over-grinding of the powder material, thereby improving the gas conveying effect and efficiency of the material, and at the same time ensuring that the ground material has good quality.

[0060] The arc formed by connecting the centers of two adjacent air guide holes 33 is the second arc 332. The central angle corresponding to the second arc 332 is the second angle β, and the second angle β is 5°-45°. In the embodiment of the present application, the density of the distribution of the air guide holes 33 is set within a suitable range, thereby ensuring that the air guide plate 32 has good structural strength, and the air guide holes 33 can more effectively discharge the ground material above the grinding medium from the grinding chamber 101, thereby improving the discharge efficiency and the quality of the material.

[0061] The second angle β is, for example but not limited to, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°, etc. It should be noted that the magnitudes of the first angle α and the second angle β can be set according to factors such as the amount of the ground medium and the ground material in the grinding chamber 101, the size of the grinding cylinder 300, etc., and are not specifically limited in the embodiment of the present application.

[0062] The diameter of the air guide hole 33 is 4 mm to 7 mm. The diameter of the air guide hole 33 is smaller than the diameter of the grinding medium, thereby preventing the grinding medium from overflowing from the air guide hole 33 into the grinding chamber 101, thereby improving the safety of the grinding cylinder 300. The diameter of the air guide hole 33 may be, but is not limited to, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm or 7 mm.

[0063] It is understandable that when the aperture of the air guide hole 33 is too large, the following problems will occur: on the one hand, the flow rate of the material in the grinding chamber 101 will be accelerated, resulting in a shortened contact time between the material and the grinding medium, thereby affecting the fineness of the product; on the other hand, the structural strength of the air guide plate 32 is reduced, which can easily cause the air guide plate 32 to be damaged or deformed, and the grinding medium can easily overflow from the air guide hole 33 into the grinding chamber 101, thereby reducing the safety of use; on the other hand, excessive intake pressure can make the particles collide more violently, increasing the wear of the equipment. When the aperture of the air guide hole 33 is too small, the following problems will occur: on the one hand, the material will not flow smoothly in the grinding chamber, affecting the material discharge efficiency; on the other hand, too small a blowing will cause the material to stay in the grinding chamber 101 for too long, which may lead to over-crushing or uneven distribution of product particle size, affecting product quality; on the other hand, it is easy to cause hole blockage, large blowing resistance, large energy loss, unstable gas volume, and increased processing and manufacturing difficulty. The embodiment of the present application sets the guide holes of appropriate sizes to avoid the problem that the material stays in the grinding chamber 101 for too long or too short a time, thereby affecting the product quality, and avoids the problem that the grinding medium overflows from the grinding chamber 101 from the air guide holes 33 and reduces the safety of use, prevents gas waste, reduces blowing resistance, improves energy utilization, extends the service life of the equipment, and makes the air guide plate 32 have good structural strength.

[0064] Please also read Figure 4 and Figure 5 , Figure 5 yes Figure 4 A partial cross-sectional view of the air guide plate 32 in FIG. The air guide hole 33 includes a first hole 3301 and a second hole 3302. The second hole 3302 is connected between the first hole 3301 and the grinding chamber 101, and the aperture of the second hole 3302 is smaller than the aperture of the first hole 3301. The aperture of the second hole 3302 is smaller than the particle size of the grinding medium. Therefore, on the one hand, the apertures of the first hole 3301 and the second hole 3302 are different, thereby reducing the resistance of the gas flowing in the air guide hole 33, so that the gas can pass through the air guide hole 33 more smoothly, while reducing the possibility of gas leakage; on the other hand, the gas flow rate and pressure distribution can be better controlled. Among them, the aperture of the first hole 3301 refers to the diameter of the first hole 3301, the aperture of the second hole 3302 refers to the diameter of the second hole 3302, and the particle size of the grinding medium refers to the diameter of the grinding medium.

[0065] Please also read Figure 2 , Figure 5 and Figure 6 , Figure 6 yes Figure 2Schematic diagram of the structure of the air guide plate 32 of the grinding cylinder 300 of the grinding device 1000 from a second perspective. The air guide plate 32 includes a substrate 323 and a surrounding plate 325 arranged on the surface of the substrate 323 facing away from the grinding chamber 101, and a plurality of air guide holes 33 are arranged on the substrate 323. The substrate 323 and the surrounding plate 325 form an air guide cavity 3201 connected to the air guide holes 33. Therefore, on the one hand, the setting of the air guide cavity 3201 can be used to buffer and store the gas provided by the gas supply device, thereby achieving stable regulation of the gas flow and pressure, so that the gas is evenly distributed to each air guide hole 33, reducing the gas pressure applied by the gas to the air guide plate 32; on the other hand, the setting of the surrounding plate 325 can enhance the overall structural strength of the air guide plate 32, prevent the air guide plate 32 from being damaged or deformed, and extend the service life of the air guide plate 32.

[0066] The substrate 323 is configured as a circular plate. As a result, since the edges of the circular plate are smooth, the problem of plate breakage during the processing is avoided, and the difficulty of processing and manufacturing the air guide plate 32 is reduced. It should be noted that the shape of the substrate 323 can be set according to the shape of the grinding cylinder 10, and the embodiment of the present application does not make specific restrictions. For example, the substrate 323 can also be configured as a square plate or a polygonal plate.

[0067] The substrate 323 is coaxially arranged with the stirring shaft 200. Specifically, a through hole 3202 is provided in the middle of the substrate 323 for the stirring shaft 200 to pass through. The substrate 323 is provided with a mounting protrusion 326 at the edge of the through hole 3202. Exemplarily, in this embodiment, the mounting protrusion 326 is fixedly connected to the end cover 31, thereby realizing a fixed connection between the air guide plate 32 and the end cover 31, ensuring that the air guide hole 33 is located above the air guide plate 32, thereby enabling the flow area of ​​the gas to cover the ground material lifted above the grinding medium.

[0068] In some embodiments, the enclosure 325 is provided with a plurality of air inlet holes 3251 connected to the air guide cavity 3201. The plurality of air inlet holes 3251 are connected to the air guide cavity 3201 and the air supply channel 301. Therefore, the air inlet holes 3251 are provided on the lateral wall of the enclosure 325. On the one hand, the impact force of the gas on the substrate 323 is reduced, the damage or deformation of the air guide plate 32 is prevented, and the service life of the air guide plate 32 is extended; on the other hand, the gas enters the air guide cavity 3201 for buffering and then is stably distributed to each air guide hole 33, the gas path setting is optimized, and the utilization rate of the gas volume is improved.

[0069] The multiple air inlet holes 3251 are arranged at intervals. The multiple air inlet holes 3251 are evenly arranged along the circumferential direction Z of the grinding cylinder 300, so that the surrounding plate 325 is evenly stressed and the service life is extended. The number and arrangement of the multiple air inlet holes 3251 can be set according to actual conditions, and the embodiment of the present application does not make specific limitations.

[0070] In some embodiments, the air guide plate 32 further includes a reinforcing rib 324. The reinforcing rib 324 is disposed on the surface of the substrate 323 facing away from the grinding chamber 101 and is located on the inner side of the enclosure 325. A plurality of air guide holes 33 are disposed on the reinforcing rib 324. Thus, on the one hand, the provision of the reinforcing rib 324 can enhance the structural strength of the air guide plate 32, thereby preventing the air guide plate 32 from being damaged or deformed, and extending the service life of the air guide plate 32; on the other hand, the reinforcing rib 324 is disposed on the surface of the substrate 323 facing the end cover 31, thereby avoiding the problem of the grinding medium and the reinforcing rib 324 expanding to cause damage to the air guide plate 32, and avoiding the problem of material accumulation at the corner of the reinforcing rib 324 and the substrate 323.

[0071] The reinforcing rib 324 is configured as an arc-shaped structure, so that during the process of the air guide plate 32 guiding air, the reinforcing rib 324 is evenly stressed, thereby extending the service life of the air guide plate 32. The reinforcing rib 324 is convexly arranged in the area of ​​the air guide plate 32 corresponding to the plurality of air guide holes 33, so that the air guide cavity 3201 can have a larger space to store gas, thereby improving the gas buffering capacity of the air guide cavity 3201. Of course, in some embodiments, the reinforcing rib 324 is configured as an annular structure, so as to facilitate the processing and shaping of the reinforcing rib 324 and enhance the structural strength of the air guide plate 32. Specifically, the reinforcing rib 324 can also extend around the central axis of the grinding cylinder 300.

[0072] In some embodiments, along the axial direction X of the grinding cylinder 300, the height of the reinforcing rib 324 protruding from the base plate 323 is a first height, the height of the surrounding plate 325 protruding from the base plate 323 is a second height, and the first height is less than the second height. Thus, the gas enters the gas guide cavity 3201 for buffering and then is stably redistributed to each gas guide hole 33, the gas path setting is optimized, and the utilization rate of the gas volume is improved.

[0073] See also Figure 2 In this embodiment, the gas seal 30 is used to be rotatably connected to the stirring shaft 200. Along the circumferential direction Z of the grinding cylinder 300, the first arc 331 includes a first end 3311 and a second end 3312 that are arranged opposite to each other, and the first end 3311 and the second end 3312 are arranged in sequence along the rotation direction F of the stirring shaft 200. Along the gravity direction of the grinding cylinder 300, the first end 3311 is higher than the second end 3312. Therefore, based on the fact that the rotation direction F of the stirring shaft 200 is opposite to the arrangement direction of the air guide hole 33 at the lowest position to the air guide hole 33 at the highest position, the flow area of ​​the gas can fully cover the ground material lifted above the grinding medium, so that the ground material stirred and lifted by the stirring shaft 200 can be blown by the air flow blown out of the air hole, realizing the auxiliary feeding function, avoiding over-grinding of the powder material, and thus improving the conveying effect and conveying efficiency of the gas on the material.

[0074] For example, when the stirring shaft 200 rotates in the counterclockwise direction, the material to be ground and the grinding medium in the grinding cylinder 300 rotate along the rotation direction F of the stirring shaft 200, so that the height of the grinding medium at the front end of the grinding cylinder 300 corresponding to the rotation direction F of the stirring shaft 200 is higher than the height of the grinding medium at the rear end of the grinding cylinder 300 corresponding to the rotation direction F of the stirring shaft 200. Therefore, most of the grinding media are concentrated on the lower right side of the grinding cylinder 300. In the embodiment of the present application, the air guide holes 33 are concentrated in the area of ​​the upper left side of the grinding cylinder 300 corresponding to the air guide plate 32, thereby improving the air guide efficiency of each air guide hole 33 and avoiding The gas introduced by the air guide holes 33 is blocked by the grinding medium, causing a problem of waste of resources, so that the flow area of ​​the gas can fully cover the ground material lifted above the grinding medium, so that the ground material stirred and lifted by the stirring shaft 200 can be blown by the air flow blown out of the air holes, thereby achieving an auxiliary feeding effect, avoiding over-grinding of the powder material, and thus improving the gas conveying effect and conveying efficiency of the material. Therefore, the embodiment of the present application optimizes the setting position of the air guide holes 33 of the air guide plate 32, so that the air guide plate 32 simultaneously takes into account the good air guide effect of the air guide holes 33 and the good structural strength of the air guide plate 32.

[0075] Please also read Figure 4 and Figure 7 , Figure 7 yes Figure 4 Schematic diagram of another embodiment of the air guide plate 32 of the grinding cylinder 300 of the grinding device 1000. Specifically, a plane perpendicular to the central axis P of the grinding cylinder 300 is defined as a projection plane, and a plurality of air guide holes 33 are located in the first section 321. Figure 4 As shown in FIG. 2 , when the stirring shaft 200 rotates counterclockwise, the projection of the first arc 331 in the projection plane is located to the left of the projection of the first section 321 in the projection plane. Figure 7 As shown, when the stirring shaft 200 rotates in the clockwise direction, the projection of the first arc 331 in the projection plane is located on the right side of the projection of the first section 321 in the projection plane. Therefore, the setting position of the air guide hole 33 is set based on the rotation direction F of the stirring shaft 200, so that the flow area of ​​the gas can fully cover the ground material lifted above the grinding medium, so that the ground material stirred and lifted by the stirring shaft 200 can be blown by the air flow blown out of the air hole, realizing the auxiliary feeding function, avoiding the powder material from being over-grinded, and thus improving the gas conveying effect and conveying efficiency of the material.

[0076] Of course, in some embodiments, a plurality of air guide holes 33 can also be provided on the top of the air guide plate 32. Thus, whether the stirring shaft 200 rotates counterclockwise or clockwise, the gas blown out of most of the air guide holes 33 can lift the ground material above the grinding medium, so that the ground material stirred and lifted by the stirring shaft 200 can be blown by the air flow blown out of the air holes, thereby achieving an auxiliary feeding effect, avoiding over-grinding of the powder material, thereby improving the gas conveying effect and conveying efficiency of the material, and thus enabling the air guide plate 32 to be applicable to different usage scenarios. For example, the first end 3311 and the second end 3312 of the first arc 331 are symmetrically arranged relative to the gravity direction of the grinding cylinder 300. Specifically, along the circumferential direction Z of the grinding cylinder 300, the line connecting the center of the first arc 331 and the center of the guide plate is the symmetry axis, and the first end 3311 and the second end 3312 of the first arc 331 are symmetrically arranged relative to the symmetry axis. It should be noted that the locations of the multiple air guide holes 33 on the air guide plate 32 can be set according to the actual use of the grinding equipment 1000, and this application does not make any specific limitation.

[0077] For example, in this embodiment, the air guide plate 32 is fixedly arranged relative to the end cover 31. Therefore, the air guide holes 33 arranged on the air guide plate 32 can always be located at the upper half of the air guide plate 32, preventing the air guide plate 32 from being displaced relative to the end cover 31 under the action of gas pressure, thereby enabling the flow area of ​​the gas to cover the ground material lifted above the grinding medium, thereby improving the utilization rate of gas resources and achieving the function of assisting in conveying materials.

[0078] Of course, in some embodiments, the air guide plate 32 is rotatable relative to the end cover 31. Therefore, based on the fact that the air guide plate 32 is rotatable relative to the end cover 31, it is convenient to adjust the position of the air guide hole 33 provided on the air guide plate 32 relative to the end cover 31 to adapt to the rotation direction F of the stirring shaft 200, thereby achieving the maximum coverage of the area outside the grinding medium in the grinding chamber 101 by the air guide hole 33, so that the ground material stirred and lifted by the stirring shaft 200 can be blown by the air flow blown out of the air hole, achieving the auxiliary feeding effect, avoiding over-grinding of the powder material, and improving the gas conveying effect and conveying efficiency of the material.

[0079] Please also read Figure 2 and Figure 83 is a structural schematic diagram of a partial structure of a grinding cylinder 300 of a grinding device 1000 provided in a second embodiment of the present application. The grinding cylinder 300 also includes an adjustment plate 35. The adjustment plate 35 is rotatable relative to the air seal 30. The adjustment plate 35 is used to block part of the air guide holes 33. Thus, the mixing cylinder can adjust the number of air guide holes 33 used to guide air to the grinding chamber 101 according to the mixing parameters of the mixing shaft 200 and the capacity of the grinding medium, thereby improving the utilization rate of the air intake, improving the uniformity of the gas volume in the grinding chamber 101 and the stability of the gas velocity, and at the same time achieving that the ground material can be discharged from the grinding chamber 101 in a timely manner, reducing the risk of over-grinding of the material.

[0080] Exemplarily, in the present embodiment, the center angle of the circle corresponding to the first arc 331 is 180°. Of course, the center angle of the circle corresponding to the first arc 331 may also be greater than 180° or less than 180°. It should be noted that the user may set the position of the adjustment plate 35 according to factors such as the rotation speed of the stirring shaft 200 and the capacity of the grinding medium, so as to control the number of air holes 33 connected to the grinding chamber 101. For example, when the capacity of the grinding medium in the grinding chamber 101 is small, the number of air holes 33 not blocked by the adjustment plate 35 may be large, that is, the center angle corresponding to the line connecting the centers of the air holes 33 connected to the grinding chamber 101 is large. On the contrary, when the capacity of the grinding medium in the grinding chamber 101 is large, the number of air holes 33 not blocked by the adjustment plate 35 may be small, that is, the center angle corresponding to the line connecting the centers of the air holes 33 connected to the grinding chamber 101 is small.

[0081] Of course, in some embodiments, in order to facilitate the processing and manufacturing of the air guide plate 32, the air guide plate 32 can also evenly arrange multiple air guide holes 33 along the circumferential direction Z of the grinding cylinder 300, that is, the first section 321 and the second section 322 are both provided with air guide holes 33, and the adjustment plate 35 is used to block the air guide holes 33 set on the second section 322 and part of the air guide holes 33 set on the first section 321.

[0082] The shape of the adjustment plate 35 matches the shape of the reinforcing rib 324, so that the adjustment plate 35 can block part of the air guide holes 33. In some embodiments, the adjustment plate 35 is sleeved on the outside of the reinforcing rib 324, so that the reinforcing rib 324 can provide a guide for the rotation of the adjustment plate 35, thereby improving the smoothness and reliability of the rotation of the adjustment plate 35 relative to the air guide plate 32.

[0083] In some embodiments, the arc formed by connecting the centers of the plurality of air guide holes 33 is a first arc 331. The first arc 331 includes a first arc segment 3313 and a second arc segment 3314, which are arranged along the circumferential direction Z of the grinding cylinder 300, and the adjustment plate 35 is used to block the air guide hole 33 corresponding to the first arc segment 3313 or the air guide hole 33 corresponding to the second arc segment 3314. Thus, the rotation positioning of the adjustment plate 35 is facilitated, and the structure is simple.

[0084] In some embodiments, a limiting structure is provided on the air guide plate 32, and the limiting structure is used to limit the rotation angle of the adjustment plate 35 relative to the air guide plate 32. Thus, the rotation angle of the adjustment plate 35 relative to the air guide plate 32 can be precisely adjusted.

[0085] Please also read Figure 1 and Fig. 9 , Fig. 9 yes Figure 1 FIG. 1 is an enlarged view of the discharge paddle 220 of the grinding device 1000 in FIG. In some embodiments, a discharge paddle 220 is provided on one side of the stirring shaft 200 near the discharge port 103. The discharge paddle 220 is used to stir the material near the discharge port 103 so that the material after grinding can pass through the discharge port 103 smoothly, thereby improving the discharge efficiency.

[0086] The grinding cylinder 300 also includes a separator 50. The separator 50 is disposed at one end of the grinding cylinder 10 facing away from the air seal 30. The separator 50 is disposed near the discharge port 103. The material separated by the separator 50 is discharged to the discharge port 103. At least one screen 51 is disposed on the separator 50. The screen 51 is used to filter the material. The outer diameter of the grinding medium is larger than the mesh of the screen 51, so that the material is discharged from the grinding chamber 101. The discharge paddle 220 is used to stir the material near the screen 51 to prevent the material from clogging the screen 51, so that the material after grinding can pass through the screen 51 smoothly, thereby improving the discharge efficiency.

[0087] The discharge paddle 220 includes a base 221 and a raised portion 222. The raised portion 222 is disposed on a side of the base 221 close to the screen 51. The raised portion 222 can increase the contact area between the discharge paddle 220 and the material. When the stirring shaft 200 drives the discharge paddle 220 to rotate, the discharge paddle 220 can fully stir the material near the screen 51, and lift the grinding medium and the material, promote the separation of the grinding medium and the material, and make the material fully contact with various positions of the screen 51, increase the contact opportunity between the material and the screen 51, and increase the possibility of the material passing through the screen 51 after grinding, thereby improving the material discharge efficiency, avoiding the accumulation of the material at the screen 51, and further avoiding the material pipe from clogging the screen 51.

[0088] In some embodiments, the distance between the protrusion 222 and the screen 51 is smaller than the size of the grinding medium, so that the protrusion 222 blocks the grinding medium, preventing the grinding medium from being stuck between the protrusion 222 and the screen 51, thereby preventing the grinding medium from damaging the discharge paddle 220 and the screen 51. The distance between the protrusion 222 and the screen 51 can be the distance between the end of the protrusion 222 away from the base 221 and the end of the screen 51 close to the protrusion 222 along the axial direction X of the grinding cylinder 300. Among them, the size of the grinding medium can be the minimum size of the smallest grinding medium. The minimum size of the grinding medium is the minimum thickness or minimum height of the grinding medium as a whole, and the minimum size of the grinding medium corresponds to the minimum width of the gap through which the grinding medium can pass. Among them, the shape of the grinding medium can be configured as a spherical shape. The size of the grinding medium can be the diameter of the grinding medium. The grinding medium can be configured as a non-metallic grinding medium to prevent metal impurities from being mixed into the material to be ground. For example, the grinding medium can be configured as a ceramic ball, etc. In some embodiments, the grinding medium can also be configured as other shapes.

[0089] In some embodiments, the distance between the protrusion 222 and the screen 51 may also be less than half the size of the smallest grinding medium to fully prevent the grinding medium from being stuck between the protrusion 222 and the screen 51. For example, the distance between the protrusion 222 and the screen 51 may be less than half the diameter of the grinding medium, that is, less than the radius of the grinding medium.

[0090] The grinding device 1000 is used to blow air into the grinding chamber 101 through the air guide hole 33, so that the material with the required particle size is blown toward the direction close to the discharge port 103 to avoid excessive grinding of the material. Among them, the material in the grinding cylinder 10 is mainly accommodated in the lower half of the grinding cylinder 10 close to the ground. The material near the screen 51 is stirred by the discharge paddle 220, so that the material can be stirred to the upper half of the grinding cylinder 10 away from the ground. The raised portion 222 can make the material form more dust during stirring, and cooperate with the blowing effect of the gas entering the air guide hole 33 on the material, which is conducive to the material being blown out of the grinding chamber 101 from the position of the screen 51 located in the upper part, thereby improving the discharge efficiency of the material. In addition, the grinding device 1000 blows air into the grinding cylinder 10 through the air guide hole 33, and the air flow can also continue to ventilate the sieve holes of the sieve 51, so that the sieve holes remain unobstructed and avoid being blocked by the material.

[0091] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A grinding cylinder (300), characterized in that: include: A grinding cylinder (10), wherein the grinding cylinder (10) is provided with a grinding chamber (101); An air seal (30) is arranged at one end of the grinding cylinder (10) along the axial direction (X) of the grinding cylinder (300); the air seal (30) comprises a first section (321) and a second section (322), the first section (321) and the second section (322) are arranged along the circumferential direction (Z) of the grinding cylinder (300) and are located above the second section (322), the first section (321) is provided with a plurality of air guide holes (33), and the plurality of air guide holes (33) are connected to the grinding chamber (101).

2. The grinding cylinder (300) according to claim 1, characterized in that: The plurality of air guide holes (33) are arranged at intervals along the circumferential direction (Z) of the grinding cylinder (300).

3. The grinding cylinder (300) according to claim 2, characterized in that: An arc formed by connecting the centers of the plurality of air guide holes (33) is a first arc (331), a central angle corresponding to the first arc (331) is a first angle (α), and the first angle (α) is 45°-225°.

4. The grinding cylinder (300) according to claim 2, characterized in that: An arc formed by connecting the centers of two adjacent air guide holes (33) is a second arc (332), a central angle corresponding to the second arc (332) is a second angle (β), and the second angle (β) is 5°-45°.

5. The grinding cylinder (300) according to claim 1, characterized in that: The diameter of the air guide hole (33) is 4 mm to 7 mm.

6. The grinding cylinder (300) according to claim 1, characterized in that: The air seal (30) comprises an end cover (31) and an air guide plate (32); the air guide plate (32) is arranged on a side of the end cover (31) close to the grinding chamber (101) and forms an air supply channel (301) between the air seal and the end cover (31); the air supply channel (301) is connected to the plurality of air guide holes (33); and the air guide plate (32) comprises the first section (321) and the second section (322).

7. The grinding cylinder (300) according to claim 6, characterized in that: The air guide plate (32) comprises a base plate (323) and a surrounding plate (325) arranged on the surface of the base plate (323) facing away from the grinding chamber (101), a plurality of air guide holes (33) are arranged on the base plate (323), and the base plate (323) and the surrounding plate (325) form an air guide cavity (3201) connected to the air guide holes (33).

8. The grinding cylinder (300) according to claim 7, characterized in that: The enclosure (325) is provided with a plurality of air inlet holes (3251) which are in communication with the air guide cavity (3201); the plurality of air inlet holes (3251) are in communication with the air guide cavity (3201) and the air supply channel (301).

9. The grinding cylinder (300) according to claim 7, characterized in that: The air guide plate (32) further comprises a reinforcing rib (324), wherein the reinforcing rib (324) is arranged on a surface of the base plate (323) facing away from the grinding chamber (101) and is located on the inner side of the enclosure plate (325), and the plurality of air guide holes (33) are arranged on the reinforcing rib (324).

10. The grinding cylinder (300) according to claim 9, characterized in that: Along the axial direction (X) of the grinding cylinder (300), the height of the reinforcing rib (324) protruding from the base plate (323) is a first height, and the height of the surrounding plate (325) protruding from the base plate (323) is a second height, and the first height is smaller than the second height.

11. The grinding cylinder (300) according to claim 1, characterized in that: The air seal (30) is used to be rotatably connected to the stirring shaft (200); the arc formed by connecting the centers of the plurality of air guide holes (33) is a first arc (331); along the circumferential direction (Z) of the grinding cylinder (300), the first arc (331) includes a first end (3311) and a second end (3312) that are arranged opposite to each other; the first end (3311) and the second end (3312) are arranged in sequence along the rotation direction (F) of the stirring shaft (200); along the gravity direction of the grinding cylinder (300), the first end (3311) is higher than the second end (3312).

12. The grinding cylinder (300) according to claim 11, characterized in that: A plane perpendicular to the central axis (P) of the grinding cylinder (300) is defined as a projection plane, and the plurality of air guide holes (33) are located in the first section (321); when the stirring shaft (200) rotates counterclockwise, the projection of the first arc (331) in the projection plane is located to the left of the projection of the first section (321) in the projection plane, and when the stirring shaft (200) rotates clockwise, the projection of the first arc (331) in the projection plane is located to the right of the projection of the first section (321) in the projection plane.

13. The grinding cylinder (300) according to claim 1, characterized in that: The grinding cylinder (300) further comprises an adjustment plate (35), wherein the adjustment plate (35) is rotatable relative to the air sealing member (30), and the adjustment plate (35) is used to block a portion of the air guide hole (33).

14. The grinding cylinder (300) according to claim 13, characterized in that: An arc formed by connecting the centers of the plurality of air guide holes (33) is a first arc line (331), the first arc line (331) comprises a first arc segment (3313) and a second arc segment (3314), the first arc segment (3313) and the second arc segment (3314) are arranged along the circumferential direction (Z) of the grinding cylinder (300), and the adjustment plate (35) is used to block the air guide hole (33) corresponding to the first arc segment (3313) or the air guide hole (33) corresponding to the second arc segment (3314).

15. A grinding device (1000), characterized in that: It comprises a stirring shaft (200) and a grinding cylinder (300) according to any one of claims 1 to 14, wherein the stirring shaft (200) is rotatably arranged in the grinding cylinder (300).

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