Grinding equipment

Abstract

The invention provides grinding equipment. The grinding equipment comprises a barrel, a screen, a rotating shaft and a discharging paddle. The cylinder is provided with a grinding cavity, and a discharge port communicated with the grinding cavity is formed in the end of the cylinder. The screen is arranged at the position, corresponding to the discharge hole, of the barrel. The rotating shaft is rotatably arranged in the grinding cavity. The discharging paddle is arranged at the end, close to the discharging port, of the rotating shaft and comprises a base part and a protruding part, and the protruding part is arranged on the side, close to the discharging port, of the base part. The protruding parts can increase the contact area between the discharging paddle and materials, when the rotating shaft drives the discharging paddle to rotate, the discharging paddle can fully stir the materials near the discharging port, grinding media and the materials are raised, separation of the grinding media and the materials is promoted, the materials make full contact with all positions of the screen, and therefore the grinding efficiency is improved. And the possibility that the ground materials pass through the screen is improved, so that the discharging efficiency of the materials is improved, the materials are prevented from being accumulated at the discharging opening, and then the material pipe is prevented from blocking the screen.

Description

Technical Field

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

[0002] In traditional grinding equipment, materials tend to accumulate near the discharge port of the cylinder, and the discharge port is easily blocked, resulting in low discharge efficiency. Summary of the invention

[0003] The present application provides a grinding device to solve the problem that the discharge port is easily blocked.

[0004] In a first aspect, the present application provides a grinding device, which includes a cylinder, a rotating shaft, and a discharge paddle. The cylinder is provided with a grinding chamber, and an end of the cylinder is provided with a discharge port connected to the grinding chamber. The screen is arranged at the cylinder corresponding to the discharge port. The rotating shaft is rotatably arranged in the grinding chamber. The discharge paddle is arranged at the end of the rotating shaft close to the discharge port, and the discharge paddle includes a base and a protrusion, and the protrusion is arranged on one side of the base close to the discharge port.

[0005] In some embodiments, a length of the base along a radial direction of the rotating shaft is greater than a diameter of the rotating shaft.

[0006] In some embodiments, the protrusion is provided at least at one end of the base along the radial direction of the rotating shaft.

[0007] In some embodiments, the cylinder is used to accommodate grinding media, and the distance between the protrusion and the screen is smaller than the size of the grinding media.

[0008] In some embodiments, an area of ​​a cross section of the protrusion along the radial direction of the shaft decreases from the base to the protrusion.

[0009] In some embodiments, the raised portion includes a first raised portion and a second raised portion, the first raised portion is located between the second raised portion and the base, and along the direction from the base toward the second raised portion, the cross-sectional area of ​​the first raised portion remains unchanged, while the cross-sectional area of ​​the second raised portion decreases.

[0010] In some embodiments, the first protrusion and the second protrusion are integrally formed.

[0011] In some embodiments, at least one inclined surface is provided on a side of the protrusion facing away from the base, and the inclined surface is inclined toward the base relative to the axial direction of the rotating shaft.

[0012] In some embodiments, at least one of the inclined surfaces includes a first side surface and a second side surface, and the first side surface and the second side surface are arranged along the radial direction of the rotating shaft. An angle is formed between the first side surface and the second side surface, with the opening facing the base, and the angle between the first side surface and the second side surface is 120°-160°.

[0013] In some embodiments, the raised portion is configured as a triangular pyramid, triangular prism, quadrangular pyramid, quadrangular prism, cone, cylinder, elliptical cylinder, frustum, pyramid or polyhedron with a bottom surface arranged on the base, and a perpendicular line from the surface or edge of the raised portion away from the side of the base to the bottom surface of the raised portion is parallel to the axial direction of the rotating shaft.

[0014] In some embodiments, the discharge paddle is detachably connected to the rotating shaft.

[0015] In some embodiments, the protrusion is integrally formed with the base, or the protrusion is detachably connected to the base.

[0016] In some embodiments, the discharge paddle is configured as a non-metallic paddle.

[0017] In some embodiments, the corners of the base are in the form of arc transitions, and / or the corners of the protrusion are in the form of arc transitions.

[0018] In some embodiments, an air inlet connected to the grinding chamber is provided at the end of the cylinder away from the discharge port.

[0019] In some embodiments, the grinding equipment also includes an end plate, which is arranged at an end of the cylinder away from the discharge port, and the rotating shaft is rotatably inserted into the end plate. The end plate includes a first section and a second section, and the first section and the second section are arranged along the circumferential direction of the rotating shaft. The first section is located above the second section, and the first section is provided with the air inlet.

[0020] In some embodiments, the grinding device further includes an adjustment plate, which is rotatable relative to the end plate. The air inlet is provided in plurality, and the adjustment plate is used to block part of the air inlet.

[0021] In some embodiments, the grinding equipment also includes a partition and a plurality of first stirring paddles, wherein the partition is arranged on the rotating shaft, and the partition divides the grinding chamber into a plurality of grinding sub-chambers, and the partition is provided with a through groove penetrating the circumferential side wall of the partition, and the through groove connects two adjacent grinding sub-chambers, and a plurality of the first stirring paddles are arranged on the rotating shaft, and at least one first stirring paddle is arranged in each grinding sub-chamber.

[0022] In some embodiments, the cylinder is used to accommodate grinding media, and the through groove allows the grinding media to pass through.

[0023] In some embodiments, the grinding equipment also includes a second stirring paddle arranged on the rotating shaft, and each of the grinding sub-chambers is provided with a plurality of stirring components, each of the stirring components includes a plurality of the first stirring paddles, and the inclination direction of the first stirring portion of at least one of the first stirring paddles in each of the stirring components is different from the inclination direction of the first stirring portion of other first stirring paddles, and the second stirring paddle is located between two adjacent stirring components, and the number of stirring portions of the second stirring paddle is greater than the number of stirring portions of the first stirring paddle.

[0024] In the grinding equipment provided in the present application, the discharge paddle includes a base and a protrusion, and the protrusion is arranged on the side of the base close to the discharge port. The protrusion can increase the contact area between the discharge paddle and the material. When the rotating shaft drives the discharge paddle to rotate, the discharge paddle can fully stir the material near the discharge port, and the grinding medium and the material can be lifted up, thereby promoting the separation of the grinding medium and the material, and making the material fully contact with various positions of the screen, thereby increasing the possibility of the material passing through the screen after grinding is completed, thereby improving the material discharge efficiency, avoiding material accumulation and clogging at the discharge port, and further avoiding the material pipe clogging the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments 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.

[0026] Figure 1 It is a schematic diagram of the structure of the grinding equipment provided in the embodiment of the present application.

[0027] Figure 2 This is a cross-sectional view of the grinding equipment provided in an embodiment of the present application after some structures are removed.

[0028] Figure 3 It is a schematic diagram of the structure of the discharge paddle provided in the embodiment of the present application.

[0029] Figure 4 It is a cross-sectional view of the discharge paddle provided in the embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of the structure of the end plate provided in an embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of the structure of the separator provided in the embodiment of the present application.

[0032] Figure 7 It is a schematic diagram of the structure of the first stirring paddle provided in an embodiment of the present application.

[0033] Figure 8 is an exploded view of a first stirring paddle provided in some embodiments of the present application.

[0034] Fig. 9 It is a schematic diagram of the structure of the second stirring paddle provided in an embodiment of the present application.

[0035] Description of main reference numerals: grinding device 1000; cylinder 10; grinding chamber 101; grinding sub-chamber 1011; pushing chamber 102; discharge port 1031; feed port 1032; air inlet 104; first arc 1041; center angle α1; screen 11; end plate 12; first section 121; second section 122; adjustment plate 13; rotating shaft 20; partition 31; through groove 311; first shaft hole 312; stirring assembly 320; first stirring paddle 32; first fixing portion 321; second shaft hole 3211; clamping groove 3212; A first stirring portion 322; a snap-on protrusion 3221; a second stirring paddle 33; a second fixing portion 331; a third axial hole 3311; a second stirring portion 332; a pushing paddle 34; a pushing fixing portion 341; a pushing paddle portion 342; a discharging paddle 35; a base 351; a raised portion 352; a first protrusion 3521; a second protrusion 3522; an inclined surface 353; a first side surface 3531; a second side surface 3532; an angle θ1; a side end surface 3533; a mounting through hole 354; a driver 40; an axial direction X; a circumferential direction Y; a radial direction R.

[0036] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0037] 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 in 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.

[0038] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation 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.

[0039] It should be noted that the terms in the specification and claims of this application and the above-mentioned drawings are only for describing specific embodiments and are not intended to limit this application. The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. The term "and / or" used in this application refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0040] Please also read Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 is a schematic structural diagram of a grinding device 1000 provided in an embodiment of the present application; Figure 2 is a cross-sectional view of the grinding device 1000 provided in an embodiment of the present application after some structures are removed; Figure 3 is a schematic structural diagram of a discharge paddle 35 provided in an embodiment of the present application; Figure 4 3 is a cross-sectional view of the discharge paddle 35 provided in the embodiment of the present application. Figure 1 and Figure 2 For reference, in this application, the X-axis direction is defined as the axial direction of the rotating shaft 20, the Y-axis is defined as the circumferential direction of the rotating shaft 20, and the R-axis is defined as the radial direction of the rotating shaft 20. The axial direction X of the rotating shaft 20 is a direction parallel to or colinear with the central axis of the rotating shaft 20, the circumferential direction Y of the rotating shaft 20 is a direction surrounding the central axis of the rotating shaft 20, and the radial direction R of the rotating shaft 20 is parallel to the radius of the rotating shaft 20. The axial direction X of the rotating shaft 20 is perpendicular to the circumferential direction Y of the rotating shaft 20. The radial direction R of the rotating shaft 20 is perpendicular to the axial direction X of the rotating shaft 20.

[0041] The grinding device 1000 includes a cylinder 10, a screen 11, a rotating shaft 20 and a discharge paddle 35. The cylinder 10 is roughly cylindrical. The cylinder 10 is provided with a grinding chamber 101. The cylinder 10 is used to accommodate grinding media and materials to be ground. The end of the cylinder 10 is provided with a discharge port 1031 connected to the grinding chamber 101. The discharge port 1031 is used to discharge the ground materials. The screen 11 is located at a position of the cylinder 10 corresponding to the discharge port 1031. The screen 11 is used to filter the materials so that the materials with particle sizes that meet the requirements are discharged from the grinding chamber 101 through the screen 11, and the materials with particle sizes that do not meet the requirements continue to be ground in the grinding chamber 101. The rotating shaft 20 is rotatably arranged in the grinding chamber 101. The discharge paddle 35 is arranged at the end of the rotating shaft 20 close to the discharge port 1031. The discharge paddle 35 includes a base 351 and a protrusion 352. The raised portion 352 is disposed on one side of the base 351 close to the discharge port 1031. When the rotating shaft 20 drives the discharge paddle 35 to rotate, the raised portion 352 can increase the contact area between the discharge paddle 35 and the material, so that the discharge paddle 35 can fully stir the material near the discharge port 1031, 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 11, increase the contact opportunity between the material and the screen 11, and increase the possibility of the material passing through the screen 11 after grinding, thereby improving the discharge efficiency of the material, avoiding the accumulation of the material at the discharge port 1031, and further avoiding the material pipe from blocking the screen 11, and avoiding the material from being over-ground.

[0042] The length of the base 351 along the radial direction R of the rotating shaft 20 is greater than the diameter of the rotating shaft 20. The distance between the end of the base 351 and the central axis of the rotating shaft 20 is greater than the radius of the rotating shaft 20. In this way, the base 351 can be extended into the material to improve the stirring effect of the discharge paddle 35 on the material. Among them, the length of the base 351 along the radial direction R of the rotating shaft 20 can be specifically set according to actual needs and is not specifically limited in this application.

[0043] At least one end of the base 351 along the radial direction R of the rotating shaft 20 is provided with a protrusion 352. Exemplarily, in this embodiment, two protrusions 352 are provided, and the two protrusions 352 are correspondingly provided at the two ends of the base 351 along the radial direction R of the rotating shaft 20 to increase the contact area between the discharge paddle 35 and the material and improve the stirring effect on the material. The protrusion 352 is located at the end position of the base 351, which can increase the distance between the protrusion 352 and the central axis of the rotating shaft 20. When the rotating shaft 20 drives the discharge paddle 35 to rotate, the protrusion 352 can have a greater movement speed, thereby improving the turning effect of the protrusion 352 on the material, improving the lifting effect of the material, and improving the discharge effect. Among them, the discharge paddle 35 can be centrally symmetrically arranged along the central axis of the rotating shaft 20 to improve the stability of the rotating shaft 20 when rotating, and improve the reliability of the grinding device 1000. In some embodiments, the protrusion 352 can also be set to one, three, etc.

[0044] The distance between the raised portion 352 and the screen 11 is smaller than the size of the grinding medium, so that the raised portion 352 blocks the grinding medium, preventing the grinding medium from being stuck between the raised portion 352 and the screen 11, thereby preventing the grinding medium from damaging the discharge paddle 35 and the screen 11. The distance between the raised portion 352 and the screen 11 can be the distance between the end of the raised portion 352 away from the base 351 and the end of the screen 11 close to the raised portion 352 along the axial direction X of the rotating shaft 20. 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 entire grinding medium, 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.

[0045] In some embodiments, the distance between the protrusion 352 and the screen 11 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 352 and the screen 11. For example, the distance between the protrusion 352 and the screen 11 may be less than half the diameter of the grinding medium, that is, less than the radius of the grinding medium.

[0046] The corners of the base 351 are in a circular arc transition, and / or the corners of the raised portion 352 are in a circular arc transition. Among them, at least one corner on the raised portion 352 is set in a circular arc transition to improve the structural strength of the edges and corners of the raised portion 352, reduce or avoid damage or breakage of the raised portion 352. Exemplarily, all edges and corners on the raised portion 352 are set in a circular arc transition. Among them, the radius of the fillet at the edge and corner position on the raised portion 352 can be smaller than the radius of the grinding medium. The connection between the raised portion 352 and the base 351 is set in a circular arc transition to reduce the stress concentration at the connection between the raised portion 352 and the base 351, improve the connection strength between the raised portion 352 and the base 351, and avoid cracks in the discharge paddle 35 during operation.

[0047] The corners of the base 351 can be set in an arc transition to reduce the wear of the base 351. In some embodiments, the arc radius of the corners near the end position of the base 351 away from the rotating shaft 20 is larger than the arc radius of the edge of the base 351 near the rotating shaft 20. The arc radius of the corners of the end of the base 351 used for connecting with the protrusion 352 is larger than the arc radius of the edge of the base 351 near the rotating shaft 20. It can be understood that when the rotating shaft 20 drives the discharge paddle 35 to rotate, the end position of the base 351 away from the rotating shaft 20 has a higher rotational linear speed, so the contact with the grinding medium is more intense. The corners near the end position are set with a larger arc radius, which is beneficial to reducing the wear of the end, thereby increasing the service life of the discharge paddle 35.

[0048] In some embodiments, the cross-sectional area of ​​the protrusion 352 along the radial direction R of the rotating shaft 20 decreases from the base 351 to the protrusion 352. The cross-sectional area of ​​the protrusion 352 along the radial direction R of the rotating shaft 20 is perpendicular to the axial direction X of the rotating shaft 20. In the axial direction X of the rotating shaft 20, the cross-sectional area of ​​the protrusion 352 at a position relatively close to the base 351 is greater than the cross-sectional area of ​​the protrusion 352 at a position relatively far from the base 351. During the movement of the protrusion 352, the material sandwiched between the protrusion 352 and the screen 11 will generate pressure on the screen 11. The reduction in the cross-sectional area of ​​the protrusion 352 at the position close to the screen 11 can reduce the pressure of the material on the screen 11, avoid damage to the screen 11, and enable the distance between the protrusion 352 and the screen 11 to be set to a smaller value, thereby improving the flipping effect of the protrusion 352 on the material near the screen 11, and effectively avoiding the material blocking the screen 11. Along the axial direction X of the rotating shaft 20, the cross-sectional area of ​​the protrusion 352 can decrease linearly, or nonlinearly, or remain unchanged first and then decrease linearly or nonlinearly from the end close to the base 351 to the end away from the base 351. In some embodiments, the cross-sectional area of ​​the protrusion 352 along the radial direction R of the rotating shaft 20 remains unchanged from the base 351 to the protrusion 352.

[0049] The protrusion 352 can be configured as a triangular pyramid, triangular prism, quadrangular pyramid, quadrangular prism, cone, cylinder, elliptical cylinder, truncated cone, prism, or polyhedron, etc., with the bottom surface disposed on the base 351. A perpendicular line drawn from the side or edge of the protrusion 352 away from the base 351 to the bottom surface of the protrusion 352 is parallel to the axial direction X of the shaft 20.

[0050] In some embodiments, the raised portion 352 may be configured as a prism with the bottom surface disposed on the base 351. The raised portion 352 may be configured as a triangular prism, a quadrangular prism, or a multi-prism, etc. In some embodiments, the bottom surface of the prism may be one of the end surfaces of the prism along the length direction, and the length direction of the prism is parallel to the axial direction X of the shaft 20. The surface of the side of the raised portion 352 facing away from the base 351 is a plane. In some embodiments, the bottom surface of the prism may be one of the side surfaces of the prism located between the opposite ends in the length direction, and the side edges of the prism extending in the length direction are perpendicular to the axial direction X of the shaft 20. Among them, the side edges of the prism extending in the length direction may be perpendicular to the radial direction R of the shaft 20. In some embodiments, a side edge of the protrusion 352 is located on the side of the protrusion 352 away from the base 351, and a perpendicular line drawn from the side edge to the bottom surface of the protrusion 352 is parallel to the axial direction X of the rotating shaft 20, and the side of the protrusion 352 away from the base 351 has two planes arranged at an angle. In some embodiments, a side surface of the protrusion 352 is located on the side of the protrusion 352 away from the base 351, and the side surface is perpendicular to the axial direction X of the rotating shaft 20. The surface of the side of the protrusion 352 away from the base 351 is a plane. Among them, the edge of the protrusion 352 can be arranged in a circular arc transition. In some embodiments, the protrusion 352 can also be configured as a cylinder or an elliptical cylinder, the bottom surface of the cylinder is one of the end surfaces of the cylinder, and the bottom surface of the elliptical cylinder is one of the end surfaces of the elliptical cylinder.

[0051] In some embodiments, the protrusion 352 can be configured as a pyramid or a cone, the bottom surface of the protrusion 352 is connected to the base 351, and the tip of the protrusion 352 is located on the side of the protrusion 352 away from the base 351. The surface of the protrusion 352 on the side away from the base 351 is a conical surface. Among them, the pyramid can be a triangular pyramid, a quadrangular pyramid, a multi-sided pyramid, etc. Among them, the tip of the protrusion 352 can be set in an arc shape to avoid forming a sharp corner. The edge of the protrusion 352 can be set in an arc transition.

[0052] In some embodiments, the protrusion 352 can be configured as a prism or a truncated cone, the large end of the protrusion 352 is connected to the base 351, the small end of the protrusion 352 is located on the side of the protrusion 352 away from the base 351, and the bottom surface of the protrusion 352 is located on the side of the large end of the protrusion 352 away from the small end. The edges of the protrusion 352 are arranged in a circular arc transition.

[0053] In some embodiments, the surface of the side of the protrusion 352 facing away from the base 351 can also be an arc surface. For example, the shape of the protrusion 352 can be configured as a prism, a prism, a cylinder, a truncated cone, etc. The central axis direction of the protrusion 352 is parallel to the axial direction X of the rotating shaft 20, and the end surface of the protrusion 352 away from the base 351 is arc-shaped and protrudes in a direction away from the base 351. Among them, the distance between the end of the circumferential side surface of the protrusion 352 away from the base 351 and the screen 11 can be less than the size of the grinding medium. In some embodiments, the protrusion 352 can also be configured as other polyhedrons, which are not specifically limited in this application.

[0054] In some embodiments, the protrusion 352 includes a first protrusion 3521 and a second protrusion 3522. The first protrusion 3521 is located between the second protrusion 3522 and the base 351. Along the direction from the base 351 to the second protrusion 3522, the area of ​​the cross section of the first protrusion 3521 remains unchanged, and the area of ​​the cross section of the second protrusion 3522 decreases. The first protrusion 3521 is roughly in the shape of a rectangular parallelepiped. The second protrusion 3522 is roughly in the shape of a triangular prism. Among them, the cross-sectional area of ​​the first protrusion 3521 remains unchanged so that the second protrusion 3522 and the base have sufficient connection strength, reduce the risk of the protrusion 352 breaking, and increase the service life of the discharge paddle 35. The smaller cross-sectional area of ​​the second convex portion 3522 can reduce the pressure of the material stirred by the second convex portion 3522 on the screen 11, so that the side of the second convex portion 3522 away from the first convex portion 3521 can be closer to the screen 11, reducing the distance between the second convex portion 3522 and the screen 11, improving the cleaning effect of the screen 11, and avoiding the problem of clogging of the screen 11. The first convex portion 3521 and the second convex portion 3522 can be integrally formed. In some embodiments, the protruding height of the second convex portion 3522 relative to the first convex portion 3521 is greater than the protruding height of the first convex portion 3521 relative to the base 351.

[0055] At least one inclined surface 353 is provided on the side of the protrusion 352 facing away from the base 351. The inclined surface 353 is inclined relative to the axial direction X of the rotating shaft 20 toward the direction of the base 351. The number of inclined surfaces 353 can be specifically set according to actual needs, and this application does not specifically limit it. In some embodiments, the inclined surface 353 can be set to one, and the side of the inclined surface 353 close to the rotating shaft 20 is inclined relative to the side of the inclined surface 353 away from the rotating shaft 20 toward the side close to or away from the base 351.

[0056] In some embodiments, the number of inclined surfaces 353 is set to two. At least one inclined surface 353 includes a first side surface 3531 and a second side surface 3532. The first side surface 3531 and the second side surface 3532 are arranged along the radial direction R of the rotating shaft 20. The first side surface 3531 is located on the side of the second side surface 3532 away from the rotating shaft 20. The inclination direction and inclination angle of the first side surface 3531 relative to the axial direction X of the rotating shaft 20 may be the same as or different from the inclination direction and inclination angle of the second side surface 3532 relative to the rotating shaft 20. The side of the first side surface 3531 close to the rotating shaft 20 is inclined relative to the side of the first side surface 3531 away from the rotating shaft 20 toward the direction close to or away from the base 351, and / or the side of the second side surface 3532 close to the rotating shaft 20 is inclined relative to the side of the second side surface 3532 away from the rotating shaft 20 toward the direction close to or away from the base 351. Exemplarily, the side of the first side 3531 close to the shaft 20 is tilted relative to the side of the first side 3531 away from the shaft 20 toward the direction away from the base 351, and the side of the second side 3532 close to the shaft 20 is tilted relative to the side of the second side 3532 away from the shaft 20 toward the direction close to the base 351, and an angle θ1 is formed between the first side 3531 and the second side 3532, with the opening facing the base 351. The angle θ1 between the first side 3531 and the second side 3532 is 120°-160°. The specific value of the angle θ1 between the first side 3531 and the second side 3532 can be specifically set according to actual needs, and is not specifically limited in this application. For example, the angle θ1 between the first side 3531 and the second side 3532 can be 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, 160°.

[0057] The raised portion 352 also includes two side end surfaces 3533 that are opposite to each other along the circumferential direction Y of the rotating shaft 20. The side end surfaces 3533 can be constructed as a plane. The side end surfaces 3533 can be parallel to the axial direction X of the rotating shaft 20. The side end surfaces 3533 are respectively perpendicular to the first side surface 3531 and the second side surface 3532. In this way, when the discharge paddle 35 is working, the side end surfaces 3533 can block the grinding medium to prevent the grinding medium from being stuck between the raised portion 352 and the screen 11, and the side end surfaces 3533 can increase the contact area between the raised portion 352 and the grinding medium and the material, so that the raised portion 352 can lift the grinding medium and the material to a greater extent, avoid the material from clogging the screen 11, and improve the discharge efficiency. In some embodiments, the protrusion 352 extends from one end of the base 351 to the other end of the base 351 along the radial direction R of the rotating shaft 20, that is, the protrusion 352 covers the entire base 351 along the radial direction R of the rotating shaft 20 to increase the area of ​​the side end surface 3533, increase the amount of grinding media and materials lifted by the discharge paddle 35 when the discharge paddle 35 rotates, and improve the discharge paddle 35's ability to flip the material, thereby further improving the discharge efficiency.

[0058] In some embodiments, the protrusion 352 and the base 351 are integrally formed to reduce the manufacturing cost of the discharge paddle 35 and reduce the difficulty of installing the discharge paddle 35. In some embodiments, the protrusion 352 and the base 351 are detachably connected, so that the protrusion 352 or the base 351 can be easily replaced separately, without having to replace the entire discharge paddle 35, thereby reducing the maintenance cost of the grinding device 1000. Among them, the protrusion 352 and the base 351 can be fixedly connected together by bonding, screwing, clamping, etc.

[0059] The discharge paddle 35 is detachably connected to the rotating shaft 20 so that the user can easily replace or maintain the discharge paddle 35, thereby reducing the maintenance cost of the grinding device 1000. The discharge paddle 35 and the rotating shaft 20 can be fixedly connected together by bonding, screwing, clamping, etc. The discharge paddle 35 can be installed on the end face of the rotating shaft 20 near the discharge port 1031. Exemplarily, a mounting groove is provided on the end face of the rotating shaft 20 near the discharge port 1031, and the discharge paddle 35 is fixed in the mounting groove. Exemplarily, the discharge paddle 35 and the rotating shaft 20 can be detachably fixedly connected together by a fastener. For example, a mounting through hole 354 is provided on the discharge paddle 35, and the fastener is configured as a bolt, which is inserted into the mounting through hole 354 and is threadedly fixedly connected to the rotating shaft 20. In some embodiments, a mounting hole is provided at the end of the rotating shaft 20 near the discharge port 1031 along the radial direction R of the rotating shaft 20, and the base 351 can be inserted into the mounting hole.

[0060] In this embodiment, the discharge paddle 35 is configured as a non-metallic paddle. The grinding device 1000 can be applied to the grinding of battery materials. The discharge paddle 35 is configured as a non-metallic paddle to avoid metal contamination of the material by debris generated by the collision between the discharge paddle 35 and the grinding medium.

[0061] Please also read Figure 1 , Figure 2 and Figure 5 , Figure 5 1 is a schematic diagram of the structure of the end plate 12 provided in an embodiment of the present application. An air inlet 104 connected to the grinding chamber 101 is provided at the end of the cylinder 10 away from the discharge port 1031. The grinding device 1000 also includes an end plate 12. The end plate 12 is provided at one end of the cylinder 10 away from the discharge port 1031. The air inlet 104 is provided on the end plate 12. The rotating shaft 20 is rotatably penetrated in the end plate 12. A through hole is provided on the end plate 12, and the rotating shaft 20 is penetrated in the through hole.

[0062] The grinding device 1000 is used to blow air into the cylinder 10 through the air inlet 104, so that the material with the required particle size is blown toward the direction close to the discharge port 1031 to prevent the material from being over-grinded. Among them, the material in the cylinder 10 is mainly accommodated in the lower half of the cylinder 10 close to the ground. The material near the screen 11 is stirred by the discharge paddle 35, so that the material can be stirred to the upper half of the cylinder 10 away from the ground. The protrusion 352 can increase the contact degree between the discharge paddle 35 and the material, so that the material can form more dust during stirring, and cooperate with the blowing effect of the gas entering from the air inlet 104 on the material, so that the ground material is blown out of the grinding chamber 101 from the position of the screen 11 in the upper half in time, thereby improving the discharge efficiency of the material and preventing the material from being over-grinded. Secondly, the grinding device 1000 blows air into the cylinder 10 through the air inlet 104, and the air flow can also continuously ventilate the mesh of the screen 11, so that the mesh remains unobstructed and is prevented from being blocked by the material. In addition, when the air blown into the cylinder 10 by the air inlet 103 uses a cold air source, the cold air source can also cool the material, avoiding the problem of material denaturation due to high temperature, thereby improving the quality of the material.

[0063] The end plate 12 includes a first section 121 and a second section 122. The first section 121 and the second section 122 are arranged along the circumferential direction Y of the rotating shaft 20. The first section 121 is located above the second section 122. The first section 121 is provided with a plurality of air inlets 104. In this embodiment, based on the air inlet 104 being arranged on the first section 121 located above the second section 122, it is avoided that the gas blown out of the air inlet 104 arranged at the bottom of the end plate 12 is difficult to play the role of auxiliary feeding and causes a waste of resources due to the obstruction of the grinding medium, thereby improving the discharge effect of the material, reducing the risk of over-grinding of the material, improving the quality of the material, and improving the resource utilization rate, reducing the production cost.

[0064] There are multiple air inlets 104. The multiple air inlets 104 can be arranged at equal intervals or at unequal intervals along the circumferential direction Y of the rotating shaft 20. Among them, the multiple air inlets 104 can be arranged on the same arc line that is concentric with the end plate 12 to enhance the structural strength of the end plate 12 and reduce the difficulty of processing and manufacturing the air inlets 104. The number and setting method of the air inlets 104 can be set according to actual conditions, and the embodiments of the present application are not specifically limited. For example, in this embodiment, the number of air inlets 104 is set to 9. In some embodiments, the number of air inlets 104 can also be set to but not limited to 2, 3, 4, 5, 12 or more than 12, etc.

[0065] The arc formed by connecting the centers of the multiple air inlets 104 is the first arc 1041. The center angle α1 corresponding to the first arc 1041 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 inlets 104 is set within a suitable range, so that the flow area of ​​the gas can cover the material to be ground that is lifted above the grinding medium, so that the material stirred and lifted can be blown by the air flow blown out of the air hole, 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. The center angle α1 is, for example, but not limited to, 20°, 40°, 45°, 60°, 80°, 100°, 120°, 140°, 160°, 180°, 200°, 220° or 225°, etc.

[0066] The grinding device 1000 further includes an adjustment plate 13, which is rotatable relative to the end plate 12. The adjustment plate 13 is used to block part of the air inlets 104. In this way, the grinding device 1000 can adjust the number of air inlets 104 for guiding air to the cylinder 10 according to the stirring parameters and the capacity of the grinding medium, thereby improving the utilization rate of the air intake, improving the uniformity of the gas amount in the cylinder 10 and the stability of the gas velocity, and at the same time achieving the timely discharge of the ground material from the cylinder 10, reducing the risk of over-grinding of the material.

[0067] Please also read Figure 1 , Figure 2 , Figure 6 and Figure 7 , Figure 6 is a schematic structural diagram of a separator 31 provided in an embodiment of the present application; Figure 7 3 is a schematic diagram of the structure of the first stirring paddle 32 provided in an embodiment of the present application. The grinding device 1000 also includes a partition 31 and a plurality of first stirring paddles 32. The partition 31 is arranged on the rotating shaft 20. The partition 31 is used to divide the grinding chamber 101 into a plurality of grinding sub-chambers 1011. The plurality of first stirring paddles 32 are arranged on the rotating shaft 20. At least one first stirring paddle 32 is arranged in each grinding sub-chamber 1011. The rotating shaft 20 is used to drive the first stirring paddle 32 to stir the grinding medium and the material to be ground in the cylinder 10, so that the grinding medium squeezes and collides with the material to be ground, thereby reducing the particle size of the material to be ground. The partition 31 can make each grinding sub-chamber 1011 contain grinding medium and material to be ground, thereby avoiding the grinding medium and material to be ground from being concentrated and accumulated at the end position of the cylinder 10, improving the grinding effect of the grinding device 1000 on the material to be ground, and improving the grinding efficiency.

[0068] In some embodiments, a connecting through hole connecting two adjacent grinding sub-cavities 1011 is provided on the partition 31, and the connecting through hole is used for passing materials. In some embodiments, a through groove 311 penetrating the circumferential side wall of the partition 31 is provided on the partition 31, that is, the through groove 311 penetrates the circumferential side wall of the partition 31 facing the inner side wall of the cylinder 10. The through groove 311 connects two adjacent grinding sub-cavities 1011. When the rotating shaft 20 drives the partition 31 to rotate, due to the relative movement between the through groove 311 and the inner side wall of the cylinder 10, the grinding media and the material to be ground entering the through groove 311 are pushed out of the through groove 311 by the friction of the inner side wall of the cylinder 10 and the extrusion of other grinding media and the material to be ground, thereby avoiding the grinding media and the material to be ground blocking the through groove 311. In addition, the grinding media entering the through groove 311 can scrape off the material to be ground adhering to the inner side wall of the cylinder 10, so that the material to be ground is fully ground and the uniformity of material grinding is improved.

[0069] The through groove 311 can be used for the grinding medium and the material to pass through. Among them, the through groove 311 is set in multiple. The partition 31 is roughly gear-shaped. The size of the through groove 311 with the smallest area among the multiple through grooves 311 is larger than the size of the largest grinding medium. The orthographic projection of the through groove 311 with the smallest area can cover the orthographic projection of the grinding medium with the largest size. In this way, all grinding media can pass through or enter the through groove 311, so as to effectively scrape off the material adhering to the inner wall of the cylinder 10, so that the material to be ground can be fully ground, and the uniformity of material grinding is improved. Among them, the shape of the grinding medium can be constructed as a spherical shape. The size of the grinding medium can be the diameter of the grinding medium. The size of the largest grinding medium can be the maximum size of the largest grinding medium, that is, the distance between the two farthest points on the largest grinding medium.

[0070] The corners of the separator 31 are in the form of arc transitions, so as to reduce or avoid the separator 31 from being damaged or broken when it collides with the grinding medium, and to avoid the debris generated by the damage of the separator 31 from contaminating the material to be ground. Among them, the corners of the through slot 311 are in the form of arc transitions. For example, the two groove walls of the through slot 311 opposite to each other along the circumferential direction Y of the rotating shaft 20 and the groove wall of the through slot 311 close to the rotating shaft 20, the circumferential side wall of the separator 31 away from the rotating shaft 20, and the two end faces of the separator 31 opposite to each other along the axial direction X of the rotating shaft 20 are all in the form of rounded transitions.

[0071] On the projection plane perpendicular to the axial direction X of the rotating shaft 20, the area of ​​the orthographic projection of the through groove 311 accounts for 1%-5% of the area of ​​the orthographic projection of the separator 31. The area of ​​the orthographic projection of the separator 31 may be the area of ​​the envelope circle of the orthographic projection of the separator 31. In some embodiments, the separator 31 is provided with a first shaft hole 312, and the rotating shaft 20 is penetrated in the first shaft hole 312. The area of ​​the orthographic projection of the separator 31 may be the remaining area after the area of ​​the envelope circle of the orthographic projection of the separator 31 is subtracted from the area of ​​the orthographic projection of the first shaft hole 312.

[0072] The specific ratio of the area of ​​the orthographic projection of the through groove 311 to the area of ​​the orthographic projection of the separator 31 can be specifically set according to actual needs, and is not specifically limited in this application. For example, the specific ratio of the area of ​​the orthographic projection of the through groove 311 to the area of ​​the orthographic projection of the separator 31 can be 1%, 1.1%, 1.2%, 1.5%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.5%, 4%, 4.5%, 5%, etc.

[0073] Along the axial direction X of the rotating shaft 20, the shape of the orthographic projection of the through slot 311 can be specifically set according to actual needs, and is not specifically limited in the present application. For example, the shape of the through slot 311 can be configured as a U-shape, an Ω-shape, a semicircle, a triangle, a square, etc. Exemplarily, in the present embodiment, the shape of the through slot 311 is an Ω-shape. Along the direction of the central axis of the rotating shaft 20 toward the through slot 311, the width of the through slot 311 along the circumferential direction Y of the rotating shaft 20 changes along the trend of "increase-decrease-increase", that is, the width of the through slot 311 along the circumferential direction Y of the rotating shaft 20 first changes from small to large, then from large to small, and then from small to large. In some embodiments, the through slot 311 can be U-shaped, and along the direction of the central axis of the rotating shaft 20 toward the through slot 311, the width of the through slot 311 along the circumferential direction Y of the rotating shaft 20 changes along the trend of "increase-unchanged-increase".

[0074] The groove wall of the through groove 311 on the side close to the rotating shaft 20 may be concave in the direction of the rotating shaft 20. The groove wall of the through groove 311 on the side close to the rotating shaft 20 is curved in an arc shape in the direction of the rotating shaft 20. In this way, it is possible to avoid the formation of a "dead angle" at the connection between the two groove walls opposite to each other along the circumferential direction Y of the rotating shaft 20 and the groove wall on the side close to the rotating shaft 20 in the through groove 311, and when the grinding medium enters the through groove 311, the material adhering to the connection between the groove walls can be scraped off, and the material is prevented from being accumulated in the through groove 311, so that the material to be ground is fully ground and the uniformity of the material grinding is improved.

[0075] The plurality of through slots 311 are arranged at intervals along the circumferential direction Y of the rotating shaft 20. Exemplarily, the plurality of through slots 311 may be arranged at equal intervals to reduce the difficulty of processing the partition 31 and improve the grinding quality of the grinding device 1000. In some embodiments, the plurality of through slots 311 may be arranged at unequal intervals, or a portion of the plurality of through slots 311 may be arranged at equal intervals, and another portion may be arranged at unequal intervals.

[0076] Exemplarily, the shape and size of each through slot 311 in the plurality of through slots 311 are set to be the same. In some embodiments, at least some of the through slots 311 in the plurality of through slots 311 may have different shapes and / or sizes. For example, the shape of some through slots 311 is configured as a U shape, and the shape of another part of the through slots 311 is configured as a triangle.

[0077] The number of through slots 311 can be set according to actual needs, and is not specifically limited in this application. For example, the number of through slots 311 can be 2, 3, 4, 5, 6, 7, 8, 9, 10, etc.

[0078] Each first stirring paddle 32 includes a first fixed portion 321 and a plurality of first stirring portions 322. The first fixed portion 321 is disposed on the rotating shaft 20. The first fixed portion 321 is provided with a second shaft hole 3211. The rotating shaft 20 is passed through the second shaft hole 3211. The plurality of first stirring portions 322 are disposed on the first fixed portion 321 at intervals along the circumferential direction Y of the rotating shaft 20. The first stirring portion 322 extends in a direction away from the rotating shaft 20 relative to the first fixed portion 321. When the rotating shaft 20 drives the first stirring paddle 32 to rotate, the first stirring portion 322 stirs the grinding medium and the material to be ground. The number of the first stirring portions 322 in each first stirring paddle 32 can be set according to actual needs, and is not specifically limited in the present application. For example, the number of the first stirring portions 322 can be two, three, and so on. The number of the first stirring portions 322 on different first fixed portions 321 can be the same or different.

[0079] At least two of the plurality of first stirring parts 322 are arranged obliquely relative to the central axis of the first fixed part 321. The central axis of the first fixed part 321 is parallel or colinear with the central axis of the rotating shaft 20. Exemplarily, in the present embodiment, each of the first stirring parts 322 in the first stirring paddle 32 is arranged obliquely relative to the central axis of the first fixed part 321. In some embodiments, the number of the first stirring parts 322 in the first stirring paddle 32 can be set to an even number, and the even number of first stirring parts 322 are arranged at equal intervals along the circumferential direction Y of the rotating shaft 20, and among the even number of first stirring parts 322, two first stirring parts 322 with the same inclination direction and inclination angle relative to the central axis of the first fixed part 321 are arranged symmetrically relative to the central axis of the first fixed part 321. The first stirring paddle 32 can be arranged symmetrically relative to the central axis to improve the stability of the first stirring paddle 32 when rotating.

[0080] The first stirring paddle 32 may be inclined in a left-handed or right-handed direction. The first stirring portion 322 may be in a flat plate shape, and the plane direction of the first stirring portion 322 is set at an angle to the central axis of the first fixing portion 321. In some embodiments, the first stirring portion 322 may also be set in a spiral shape, and the tangent direction of the side of the first stirring portion 322 along the axial direction X of the rotating shaft 20 is set at an angle to the central axis of the first fixing portion 321.

[0081] The arc transition is set at the connection between the first stirring part 322 and the first fixing part 321 to reduce the stress concentration at the connection between the first stirring part 322 and the first fixing part 321, improve the connection strength between the first stirring part 322 and the first fixing part 321, and avoid cracks in the first stirring paddle 32 during operation. The corners of the first stirring part 322 are arc transitions to avoid the corners of the first stirring part 322 from breaking.

[0082] Please also read Figure 1 , Figure 2 , Figure 7 and Figure 8 , Figure 8 : is an exploded view of the first stirring paddle 32 provided in some embodiments of the present application. In some embodiments, the first fixed portion 321 and the first stirring portion 322 are detachably connected. It can be understood that the first stirring portion 322 plays a major role in promoting the stirring of the grinding medium and the material to be ground, and the first stirring portion 322 is prone to wear after long-term work. The first stirring portion 322 is detachable relative to the first fixed portion 321, and the first stirring portion 322 can be replaced separately, so that the first stirring paddle 32 does not need to be replaced as a whole, reducing the maintenance cost of the grinding equipment 1000. In addition, when the first fixed portion 321 is damaged or broken, the first fixed portion 321 can also be replaced separately. Among them, one of the first fixed portion 321 and the first stirring portion 322 is provided with a snap-in groove 3212, and the other is provided with a snap-in protrusion 3221, and the snap-in protrusion 3221 is used to snap into the snap-in groove 3212. In some embodiments, the first fixing portion 321 and the first stirring portion 322 may be integrally formed to reduce the manufacturing process steps of the first stirring paddle 32 and reduce the difficulty of assembling the first stirring paddle 32 .

[0083] At least one stirring assembly 320 is provided in each grinding sub-chamber 1011. Each stirring assembly 320 includes a plurality of first stirring paddles 32. The inclination direction of the first stirring portion 322 of at least one first stirring paddle 32 in each stirring assembly 320 is different from the inclination direction of the first stirring portion 322 of other first stirring paddles 32. When the rotating shaft 20 drives the stirring assembly 320 to rotate as a whole, the first stirring paddles 32 with different inclination directions push the grinding medium and the material to be ground in opposite directions, so that the grinding medium and the material to be ground can collide and rub against each other, thereby increasing the degree of disorder of the material to be ground in the grinding sub-chamber 1011 and improving the grinding effect of the material. Among them, the inclination directions of the first stirring portions 322 of two adjacent first stirring paddles 32 in each stirring assembly 320 are opposite to the first fixed portion 321. The first stirring portions 322 of two adjacent first stirring paddles 32 can be staggered along the circumferential direction Y of the rotating shaft 20, that is, along the axial direction X of the rotating shaft 20, the first stirring portion 322 of one of the two adjacent first stirring paddles 32 is located between the two adjacent first stirring portions 322 of the other first stirring paddle 32.

[0084] The number of the first stirring paddles 32 in each stirring assembly 320 can be specifically set according to actual needs, and is not specifically limited in this application. For example, in this embodiment, two first stirring paddles 32 are provided in each stirring assembly 320. In some embodiments, the number of the first stirring paddles 32 in each stirring assembly 320 can also be four, six, and so on. Among them, the number of the first stirring paddles 32 in each stirring assembly 320 can be an even number to increase the residence time of the material at the stirring assembly 320 position.

[0085] Please also read Figure 1 , Figure 2 and Fig. 9 , Fig. 9 3 is a schematic diagram of the structure of the second stirring paddle 33 provided in some embodiments of the present application. In some embodiments, the grinding device 1000 further includes a second stirring paddle 33 disposed on the rotating shaft 20. A plurality of stirring assemblies 320 are disposed in each grinding sub-chamber 1011. The second stirring paddle 33 is located between two adjacent stirring assemblies 320. The second stirring paddle 33 is used to push the material in the grinding sub-chamber 1011 to move along the axial direction X of the rotating shaft 20.

[0086] The second stirring paddle 33 includes a second fixed portion 331 and a plurality of second stirring portions 332. The second fixed portion 331 is arranged on the rotating shaft 20. The second fixed portion 331 is provided with a third shaft hole 3311. The rotating shaft 20 is penetrated in the third shaft hole 3311. The plurality of second stirring portions 332 are arranged on the second fixed portion 331 at intervals along the circumferential direction Y of the rotating shaft 20. The second stirring portion 332 extends in a direction away from the rotating shaft 20 relative to the second fixed portion 331. The number of the second stirring portions 332 in each second stirring paddle 33 can be set according to actual needs, and is not specifically limited in the present application. For example, the number of the second stirring portions 332 can be four, five, and so on. The number of the second stirring portions 332 on different second fixed portions 331 can be the same or different.

[0087] The number of the second stirring parts 332 on the second stirring paddle 33 is greater than the number of the first stirring parts 322 on the first stirring paddle 32. The second stirring paddle 33 can stir the grinding medium and the material to be ground more frequently, thereby further improving the grinding effect and grinding efficiency of the material. The pushing effect of the second stirring paddle 33 on the material is greater than the pushing effect of the first stirring paddle 32 on the material, which is conducive to the movement of the material along the axial direction X of the rotating shaft 20.

[0088] At least two second stirring parts 332 in the second stirring paddle 33 are tilted relative to the central axis of the second fixed part 331. The central axis of the second fixed part 331 is parallel or colinear with the central axis of the rotating shaft 20. Exemplarily, each second stirring part 332 in the second stirring paddle 33 is tilted relative to the central axis of the second fixed part 331. The tilting direction of the second stirring part 332 corresponds to the rotation direction of the rotating shaft 20. When the rotating shaft 20 drives the second stirring paddle 33 to rotate, the second stirring part 332 pushes the material to move toward the discharge port of the cylinder 10. The second stirring part 332 can be tilted in a left-handed or right-handed direction.

[0089] In some embodiments, the number of the second stirring parts 332 in the second stirring paddle 33 can be set to an even number, and the even number of second stirring parts 332 are arranged at equal intervals along the circumferential direction Y of the rotating shaft 20, and among the even number of second stirring parts 332, two second stirring parts 332 with the same inclination direction and inclination angle relative to the central axis of the second fixed part 331 are arranged symmetrically relative to the central axis of the second fixed part 331. Among them, the second stirring paddle 33 can be arranged symmetrically relative to the central axis to improve the stability of the second stirring paddle 33 when rotating.

[0090] The second stirring portion 332 may be in the shape of a flat plate, and the plane direction of the second stirring portion 332 is set at an angle with the central axis of the second fixing portion 331. In some embodiments, the second stirring portion 332 may also be set in a spiral shape, and the tangent direction of the side of the second stirring portion 332 along the axial direction X of the rotating shaft 20 is set at an angle with the central axis of the second fixing portion 331.

[0091] The inclination of the second stirring portion 332 relative to the second fixed portion 331 is smaller than the inclination of the first stirring portion 322 relative to the first fixed portion 321, so as to increase the residence time of the material at the position of the second stirring paddle 33, which is conducive to the second stirring paddle 33 fully stirring the material in the process of pushing the material to move along the axial direction of the rotating shaft 20. In some embodiments, in the orthographic projection on the projection plane perpendicular to the axial direction X of the rotating shaft 20, the area of ​​the second stirring portion 332 can be smaller than the area of ​​the first stirring portion 322, so as to increase the residence time of the material at the position of the second stirring paddle 33, so that the material moves toward the discharge port after being fully stirred and ground.

[0092] The connection between the second stirring part 332 and the second fixed part 331 is provided with an arc transition to reduce stress concentration at the connection between the second stirring part 332 and the second fixed part 331, improve the connection strength between the second stirring part 332 and the second fixed part 331, and avoid cracks in the second stirring paddle 33 during operation. The corners of the second stirring part 332 are in an arc transition to avoid the corners of the second stirring part 332 from breaking. In some embodiments, the second fixed part 331 and the second stirring part 332 are detachably connected. In some embodiments, the second fixed part 331 and the second stirring part 332 can be integrally formed.

[0093] In some embodiments, the grinding device 1000 further includes a push paddle 34. The cylinder 10 is further provided with a push chamber 102 connected to the grinding chamber 101. The rotating shaft 20 is rotatably disposed in the push chamber 102. The push paddle 34 is disposed at a position of the rotating shaft 20 corresponding to the push chamber 102. The cylinder 10 is provided with a discharge port 1031 and a feed port 1032. The grinding chamber 101 is disposed near the discharge port 1031 and is connected to the discharge port 1031. The discharge port 1031 is located at an end position of the cylinder 10 corresponding to the grinding chamber 101 away from the push chamber 102. The push chamber 102 is disposed near the feed port 1032 and is connected to the feed port 1032. The feed port 1032 is located at a position of the cylinder 10 corresponding to the push chamber 102. After the material to be ground enters the pushing chamber 102 from the feed port 1032, the pushing paddle 34 pushes the material into the grinding chamber 101 for grinding. After the material particle size is ground to meet the requirements, the material is discharged from the discharge port 1031. Along the axial direction X of the rotating shaft 20, the length of the grinding chamber 101 is greater than the length of the pushing chamber 102, so that the grinding medium can fully grind the material to be ground.

[0094] The push paddle 34 includes a push paddle fixing portion 341 and a plurality of push paddle portions 342. The push paddle fixing portion 341 is disposed on the rotating shaft 20. The plurality of push paddle portions 342 are disposed on the push paddle fixing portion 341 at intervals along the circumferential direction Y of the rotating shaft 20. The push paddle portions 342 extend in a direction away from the rotating shaft 20 relative to the push paddle fixing portion 341. The number of push paddle portions 342 in each push paddle 34 can be set according to actual needs, and is not specifically limited in the present application. For example, the number of push paddle portions 342 can be two, three, four, and so on.

[0095] The push paddle portions 342 of the plurality of push paddles 34 are arranged in a spiral shape. The projections of the push paddle portions 342 of two adjacent push paddles 34 on a plane perpendicular to the central axis of the rotating shaft 20 are offset. In this way, the material can be pushed by the push paddle portion 342 of the next adjacent push paddle 34 immediately after being pushed by the push paddle portion 342 of the previous push paddle 34, thereby improving the pushing effect of the push paddle 34 on the material. The push paddle portions 342 of two adjacent push paddles 34 can be staggered at 90 degrees.

[0096] The push paddle portion 342 of the push paddle 34 is tilted relative to the central axis of the push fixed portion 341. The tilt degree of the push paddle portion 342 relative to the push fixed portion 341 is greater than the tilt degree of the first stirring portion 322 relative to the first fixed portion 321. In some embodiments, the tilt direction of the first stirring portion 322 of the first stirring paddle 32 near the side of the push paddle 34 in the stirring assembly 320 is the same as the tilt direction of the push paddle 34, so as to facilitate pushing the material to the position corresponding to each first stirring paddle 32 in the corresponding stirring assembly 320 for stirring and grinding. The tilt direction of the second stirring portion 332 is the same as the tilt direction of the push paddle 34, so as to facilitate the movement of the material toward the discharge port 1031.

[0097] In some embodiments, the inclination degree of the second stirring portion in the second stirring paddle 33 relatively close to the pushing chamber 102 is greater than the inclination degree of the second stirring portion in the second stirring paddle 33 relatively far away from the pushing chamber 102, and / or the inclination degree of the first stirring portion 322 in the first stirring paddle 32 relatively close to the pushing chamber 102 is greater than the inclination degree of the first stirring portion 322 in the first stirring paddle 32 relatively far away from the pushing chamber 102, so that the material moves slowly in the grinding chamber 101 and the material is fully ground.

[0098] Along the axial direction X of the rotating shaft 20, the push paddle 34, the second stirring paddle 33, the first stirring paddle 32, and the end faces of the partition 31 are tightly connected to prevent materials from entering the connection position with the rotating shaft 20 and to prevent debris generated when the rotating shaft 20 is working from contaminating the materials.

[0099] The grinding device 1000 also includes a stopper. Stopper grooves are respectively provided on the rotating shaft 20 and the pusher paddle 34, the second stirring paddle 33, the first stirring paddle 32, and the separator 31, and the stopper is accommodated in the stopper groove to realize the clamping and fixing of the pusher paddle 34, the second stirring paddle 33, the first stirring paddle 32, and the separator 31 with the rotating shaft 20. Among them, the stopper can be configured as a key, and the stopper groove is configured with a keyway, and the key is accommodated in the keyway. The key is used to abut against the rotating shaft 20, the pusher paddle 34, the second stirring paddle 33, the first stirring paddle 32, and the separator 31, and the rotating shaft 20 drives the pusher paddle 34, the second stirring paddle 33, the first stirring paddle 32, and the separator 31 to rotate together with the rotating shaft 20 through the key.

[0100] The grinding device 1000 further includes a driver 40. An escape hole is provided at the end of the cylinder 10, and the rotating shaft 20 extends out of the cylinder 10 from the escape hole. The driver 40 is drivingly connected to the end of the rotating shaft 20 located outside the cylinder 10. The driver 40 is used to drive the rotating shaft 20 to rotate.

[0101] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A grinding device (1000), characterized in that: include: A cylinder (10), wherein the cylinder (10) is provided with a grinding chamber (101), and an end of the cylinder (10) is provided with a discharge port (1031) connected to the grinding chamber (101); A screen (11) is arranged on the cylinder (10) at a position corresponding to the discharge port (1031); A rotating shaft (20), the rotating shaft (20) being rotatably disposed in the grinding chamber (101); A discharge paddle (35), wherein the discharge paddle (35) is arranged at the end of the rotating shaft (20) close to the discharge port (1031), and the discharge paddle (35) comprises a base (351) and a protrusion (352), and the protrusion (352) is arranged on one side of the base (351) close to the discharge port (1031).

2. The grinding device (1000) according to claim 1, characterized in that: The length of the base (351) along the radial direction (R) of the rotating shaft (20) is greater than the diameter of the rotating shaft (20).

3. The grinding device (1000) according to claim 1, characterized in that: The protrusion (352) is provided at at least one end of the base (351) along the radial direction (R) of the rotating shaft (20).

4. The grinding device (1000) according to claim 1, characterized in that: The cylinder (10) is used to accommodate grinding media, and the distance between the protrusion (352) and the screen (11) is smaller than the size of the grinding media.

5. The grinding device (1000) according to claim 1, characterized in that: The cross-sectional area of ​​the protrusion (352) along the radial direction (R) of the rotation shaft (20) decreases in a direction from the base (351) to the protrusion (352).

6. The grinding device (1000) according to claim 1, characterized in that: The raised portion (352) includes a first raised portion (3521) and a second raised portion (3522), wherein the first raised portion (3521) is located between the second raised portion (3522) and the base (351), and along the direction from the base (351) toward the second raised portion (3522), the cross-sectional area of ​​the first raised portion (3521) remains unchanged, while the cross-sectional area of ​​the second raised portion (3522) decreases.

7. The grinding device (1000) according to claim 6, characterized in that: The first convex portion (3521) and the second convex portion (3522) are integrally formed.

8. The grinding device (1000) according to claim 1, characterized in that: At least one inclined surface (353) is provided on a side of the protrusion (352) facing away from the base (351), and the inclined surface (353) is inclined in a direction toward the base (351) relative to the axial direction (X) of the rotating shaft (20).

9. The grinding device (1000) according to claim 8, characterized in that: At least one of the inclined surfaces (353) includes a first side surface (3531) and a second side surface (3532), and the first side surface (3531) and the second side surface (3532) are arranged along the radial direction (R) of the rotating shaft (20), and an angle (θ1) is formed between the first side surface (3531) and the second side surface (3532) with the opening facing the base (351), and the angle (θ1) between the first side surface (3531) and the second side surface (3532) is 120°-160°.

10. The grinding device (1000) according to claim 1, characterized in that: The raised portion (352) is configured as a triangular pyramid, triangular prism, quadrangular pyramid, quadrangular prism, cone, cylinder, elliptical cylinder, frustum, pyramid or polyhedron, the bottom surface of which is arranged on the base (351), and a perpendicular line drawn from the surface or edge of the raised portion (352) away from the base (351) to the bottom surface of the raised portion (352) is parallel to the axial direction (X) of the rotating shaft (20).

11. The grinding device (1000) according to claim 1, characterized in that: The discharge paddle (35) is detachably connected to the rotating shaft (20).

12. The grinding device (1000) according to claim 1, characterized in that: The protrusion (352) and the base (351) are integrally formed, or the protrusion (352) and the base (351) are detachably connected.

13. The grinding device (1000) according to claim 1, characterized in that: The discharge paddle (35) is configured as a non-metallic paddle.

14. The grinding device (1000) according to claim 1, characterized in that: The corners of the base (351) are in the form of arc transitions, and / or the corners of the raised portion (352) are in the form of arc transitions.

15. The grinding device (1000) according to claim 1, characterized in that: An air inlet (104) communicating with the grinding chamber (101) is provided at the end of the cylinder (10) away from the discharge port (1031).

16. The grinding device (1000) according to claim 15, characterized in that The grinding device (1000) also includes an end plate (12), which is arranged at one end of the cylinder (10) away from the discharge port (1031), and the rotating shaft (20) is rotatably inserted into the end plate (12), and the end plate (12) includes a first section (121) and a second section (122), and the first section (121) and the second section (122) are arranged along the circumferential direction (Y) of the rotating shaft (20), and the first section (121) is located above the second section (122), and the first section (121) is provided with the air inlet (104).

17. The grinding device (1000) according to claim 16, characterized in that The grinding device (1000) further comprises an adjustment plate (13), wherein the adjustment plate (13) is rotatable relative to the end plate (12), the air inlet (104) is arranged in a plurality, and the adjustment plate (13) is used to block part of the air inlet (104).

18. The grinding device (1000) according to claim 1, characterized in that The grinding device (1000) further comprises a partition (31) and a plurality of first stirring paddles (32); the partition (31) is arranged on the rotating shaft (20); the partition (31) divides the grinding chamber (101) into a plurality of grinding sub-chambers (1011); a through groove (311) penetrating the circumferential side wall of the partition (31) is provided on the partition (31); the through groove (311) connects two adjacent grinding sub-chambers (1011); the plurality of first stirring paddles (32) are arranged on the rotating shaft (20); and at least one first stirring paddle (32) is arranged in each grinding sub-chamber (1011).

19. The grinding device (1000) according to claim 18, characterized in that The cylinder (10) is used to accommodate grinding media, and the through groove (311) allows the grinding media to pass through.

20. The grinding device (1000) according to claim 18, characterized in that The grinding device (1000) further comprises a second stirring paddle (33) arranged on the rotating shaft (20); a plurality of stirring assemblies (320) are arranged in each of the grinding sub-chambers (1011); each of the stirring assemblies (320) comprises a plurality of the first stirring paddles (32); the inclination direction of the first stirring portion (322) of at least one of the first stirring paddles (32) in each of the stirring assemblies (320) is different from the inclination direction of the first stirring portion (322) of other first stirring paddles (32); the second stirring paddle (33) is located between two adjacent stirring assemblies (320); and the number of stirring portions of the second stirring paddle (33) is greater than the number of stirring portions of the first stirring paddle (32).

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