Grinding equipment
By incorporating separators and stirring paddles into the grinding equipment, the problem of material accumulation is solved, resulting in a more efficient and uniform grinding effect.
Patent Information
- Application Number
- CN202423015490.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-06
AI Technical Summary
In traditional grinding equipment, grinding media and materials to be ground tend to accumulate at the end of the grinding cylinder, resulting in reduced grinding effect and low efficiency.
A separator is installed in the grinding equipment. A through groove is opened on the separator and runs through the circumferential sidewall. Multiple stirring paddles are installed on the rotating shaft. Through the friction and extrusion between the through groove and the inner sidewall of the cylinder, material accumulation is avoided, and the grinding effect and efficiency are improved.
It effectively avoids material blockage, improves grinding effect and efficiency, and ensures material uniformity.
Smart Images
Figure CN223832427U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of material grinding technology, and more particularly to a grinding device. Background Technology
[0002] The grinding cylinder of a grinding equipment is used to hold the grinding media and the material to be ground. By stirring the grinding media and the material to be ground, the grinding media compresses and collides with the material to be ground, which can reduce the particle size of the material to be ground. However, in traditional grinding equipment, as the grinding media and the material to be ground are continuously stirred, the grinding media and the material to be ground tend to accumulate at the end of the grinding cylinder, resulting in a significant decrease in grinding effect and low grinding efficiency. Utility Model Content
[0003] This application provides a grinding device to solve the problem that grinding media and materials to be ground tend to accumulate at the end of the grinding cylinder.
[0004] This application provides a grinding apparatus, which includes a cylinder, a rotating shaft, a partition, and a plurality of first stirring paddles. The cylinder has a grinding chamber. The rotating shaft is rotatably disposed within the grinding chamber. The partition is disposed on the rotating shaft, dividing the grinding chamber into a plurality of grinding sub-cavities. A through groove is formed on the partition, penetrating its circumferential sidewall, and the through groove connects two adjacent grinding sub-cavities. A plurality of first stirring paddles are disposed on the rotating shaft, and at least one first stirring paddle is disposed within each grinding sub-cavity.
[0005] In some embodiments, the corners of the through groove are rounded.
[0006] In some embodiments, the groove wall on the side of the through groove near the rotating shaft is curved in an arc towards the direction of the rotating shaft.
[0007] In some embodiments, the width of the through groove along the central axis of the rotating shaft towards the through groove first increases in size, then decreases in size, and then increases again in size along the circumferential direction of the rotating shaft.
[0008] In some embodiments, the cylindrical body is used to contain abrasive media, and the through groove allows the abrasive media to pass through.
[0009] In some embodiments, the through slots are provided in a plurality of manner, and the plurality of through slots are arranged at intervals along the circumferential direction of the rotating shaft.
[0010] In some embodiments, on a projection plane perpendicular to the axial direction of the rotating shaft, the area of the orthographic projection of the through groove accounts for 1%-5% of the area of the orthographic projection of the separator.
[0011] In some embodiments, each of the first stirring paddles includes a first fixing part and a plurality of first stirring parts. The first fixing part is disposed on the rotating shaft, and the plurality of first stirring parts are disposed at intervals on the first fixing part along the circumferential direction of the rotating shaft. At least two of the first stirring parts are disposed at an angle relative to the central axis of the first fixing part.
[0012] In some embodiments, the first fixing part and the first stirring part are integrally formed, or the first fixing part and the first stirring part are detachably connected.
[0013] In some embodiments, the grinding apparatus further includes a second stirring paddle disposed on the rotating shaft. Each grinding sub-cavity is provided with a plurality of stirring components. Each stirring component includes a plurality of first stirring paddles. The inclination direction of the first stirring part of at least one first stirring paddle in each stirring component is different from the inclination direction of the first stirring part of the other first stirring paddles. The second stirring paddle is located between two adjacent stirring components. The second stirring paddle includes a second fixing part and a plurality of second stirring parts. The second fixing part is disposed on the rotating shaft. The plurality of second stirring parts are disposed at intervals on the second fixing part along the circumferential direction of the rotating shaft. The number of second stirring parts on the second stirring paddle is greater than the number of first stirring parts on the first stirring paddle.
[0014] In some embodiments, at least two of the second stirring parts in the second stirring paddle are inclined relative to the central axis of the second fixed part.
[0015] In some embodiments, the grinding device further includes a pusher paddle, and the cylinder is further provided with a pusher chamber communicating with the grinding chamber. The cylinder is provided with a discharge port and a feed port. The grinding chamber is located near the discharge port and is connected to the discharge port. The pusher chamber is located near the feed port and is connected to the feed port. The rotating shaft is rotatably disposed in the pusher chamber, and the pusher paddle is disposed at the position of the rotating shaft corresponding to the pusher chamber.
[0016] In some embodiments, the grinding apparatus further includes a discharge paddle, and the end of the cylinder is provided with a discharge port communicating with the grinding chamber. The discharge paddle is disposed at the end of the rotating shaft near the discharge port. The discharge paddle includes a base and a protrusion, and the protrusion is disposed on the side of the base near the discharge port.
[0017] In some embodiments, the protrusion is configured as a triangular pyramid, triangular prism, square pyramid, square prism, cylinder, cone, frustum, truncated pyramid, or polyhedron with its bottom surface disposed on the base, and the perpendicular line drawn from the face or edge of the protrusion away from the base to the bottom surface of the protrusion is parallel to the axial direction of the axis of rotation.
[0018] In some embodiments, the grinding device further includes a screen disposed at the discharge port, the cylinder is used to contain grinding media, and the distance between the protrusion and the screen is smaller than the size of the grinding media.
[0019] The grinding equipment provided in this application is based on a separator on a rotating shaft. The separator divides the grinding chamber of the cylinder into multiple grinding sub-chambers. A through groove is formed on the circumferential sidewall of the separator. On the one hand, the separator allows each grinding sub-chamber to contain grinding media and material to be ground, thereby preventing the grinding media and material to be ground from accumulating at the end of the cylinder, thus improving the grinding effect and efficiency of the grinding equipment. On the other hand, when the rotating shaft drives the separator to rotate, the grinding media and material to be ground that enter the through groove are pushed out of the through groove by the friction of the inner sidewall of the cylinder and the squeezing of other grinding media and material to be ground, thus preventing the grinding media and material to be ground from clogging the through groove. Furthermore, when the rotating shaft drives the separator to rotate, the grinding media that enters the through groove can scrape off the material to be ground that is adhering to the inner sidewall of the cylinder, thereby ensuring that the material to be ground is fully ground and improving the uniformity of material grinding. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a cross-sectional view of the grinding equipment provided in the embodiments of this application.
[0022] Figure 2 This is a cross-sectional view of the grinding equipment provided in this application embodiment after removing part of the structure.
[0023] Figure 3 This is a schematic diagram of the structure of the separator provided in the embodiment of this application.
[0024] Figure 4 This is a schematic diagram of the structure of the first stirring impeller provided in the embodiment of this application.
[0025] Figure 5 This is an exploded view of the first stirring impeller provided in some embodiments of this application.
[0026] Figure 6 This is a schematic diagram of the structure of the second stirring impeller provided in the embodiment of this application.
[0027] Figure 7 This is a schematic diagram of the structure of the discharge paddle provided in the embodiments of this application.
[0028] Key reference numerals in the drawings: Grinding equipment 1000; cylinder 10; grinding chamber 101; grinding sub-chamber 1011; pushing chamber 102; discharge port 1031; inlet port 1032; screen 11; rotating shaft 20; separator 31; through groove 311; first shaft hole 312; stirring assembly 320; first stirring paddle 32; first fixing part 321; second shaft hole 3211; snap-fit groove 3212; first stirring part 322; snap-fit protrusion 3221; second stirring paddle 33; second fixing part 331; third shaft hole 3311; second stirring part 332; pushing paddle 34; pushing fixing part 341; pushing paddle part 342; discharge paddle 35; base 351; protrusion 352; driver 40; axial direction X; circumferential direction Y.
[0029] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0031] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0032] It should be noted that the terminology in the specification, claims, and accompanying drawings of this application is for describing specific embodiments only and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. The term "and / or" as used in this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.
[0033] Please refer to the following: Figure 1 , Figure 2 , Figure 3 as well as Figure 4 , Figure 1 This is a cross-sectional view of the grinding apparatus 1000 provided in an embodiment of this application; Figure 2 This is a cross-sectional view of the grinding equipment 1000 provided in this application embodiment after removing part of its structure; Figure 3 This is a schematic diagram of the structure of the separator 31 provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the first stirring paddle 32 provided in the embodiment of this application.
[0034] The grinding equipment 1000 includes a cylinder 10, a rotating shaft 20, a partition 31, and a plurality of first stirring paddles 32. The cylinder 10 is generally cylindrical. The cylinder 10 is provided with a grinding chamber 101. The grinding chamber 101 is used to contain grinding media and materials to be ground. The rotating shaft 20 is rotatably disposed within the grinding chamber 101. The partition 31 is disposed on the rotating shaft 20. The partition 31 is used to divide the grinding chamber 101 into a plurality of grinding sub-chambers 1011. A through groove 311 is formed on the partition 31, penetrating the circumferential sidewall of the partition 31, that is, the through groove 311 penetrates the circumferential sidewall of the partition 31 facing the inner sidewall of the cylinder 10. The through groove 311 connects two adjacent grinding sub-chambers 1011. A plurality of first stirring paddles 32 are disposed on the rotating shaft 20. Each grinding sub-chamber 1011 is provided with at least one first stirring paddle 32. The rotating shaft 20 drives the first stirring paddle 32 to stir the grinding media and the material to be ground in the cylinder 10, causing the grinding media to compress and collide with the material to be ground, thereby reducing the particle size of the material to be ground. In this embodiment, the separator 31 allows each grinding sub-cavity 1011 to contain both grinding media and the material to be ground, thus preventing the grinding media and the material to be ground from accumulating at the end of the cylinder 10, improving the grinding effect of the grinding equipment 1000 on the material to be ground, and increasing the grinding efficiency. In addition, in related technologies, the separator has through holes that do not penetrate the circumferential sidewall of the separator. When the grinding equipment is grinding, the through holes are easily blocked by the grinding media and the material to be ground, making it difficult for the material to pass through the through holes, causing the material to be ground to be over-ground, and the material to be ground to adhere to the inner sidewall of the cylinder corresponding to the circumferential sidewall of the separator. In this embodiment, a through groove 311 is formed in the separator 31, penetrating the circumferential sidewall of the separator 31. When the rotating shaft 20 drives the separator 31 to rotate, the grinding medium and the material to be ground that enter the through groove 311 move relative to each other. The grinding medium and the material to be ground are pushed out of the through groove 311 by the friction of the inner sidewall of the cylinder 10 and the squeezing of the grinding medium and the material to be ground. This avoids the grinding medium and the material to be ground from clogging the through groove 311. In addition, the grinding medium that enters the through groove 311 can scrape off the material to be ground that is adhered to the inner sidewall of the cylinder 10, so that the material to be ground is fully ground and the uniformity of the material grinding is improved.
[0035] In the embodiments of this application, for the purpose of clearer description, Figure 1 For reference, in this application, the X-axis direction is defined as the axial direction of the rotating shaft 20, and the Y-axis is defined as the circumferential direction of the rotating shaft 20. The axial direction X of the rotating shaft 20 is parallel to or collinear with the central axis of the rotating shaft 20, and the circumferential direction Y of the rotating shaft 20 is the direction surrounding the central axis 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.
[0036] In this embodiment, the corners of the separator 31 are rounded to reduce or prevent damage or breakage of the separator 31 when it collides with the grinding media, and to prevent debris from the separator 31 from contaminating the material to be ground. Specifically, the corners of the through groove 311 are rounded. For example, the two opposite groove walls along the circumferential direction Y of the rotating shaft 20, the groove wall of the through groove 311 near 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 rounded.
[0037] The through-slots 311 allow the grinding media to pass through. Multiple through-slots 311 are provided. The separators 31 are generally gear-shaped. The smallest through-slot 311 has a larger area than the largest grinding media. The orthographic projection of the smallest through-slot 311 covers the orthographic projection of the largest grinding media. This allows all grinding media to pass through or enter the through-slots 311, effectively scraping off material adhering to the inner wall of the cylinder 10. The grinding media can be spherical. The size of the grinding media can be its diameter. The grinding media can be non-metallic to avoid the introduction of metallic impurities into the material being ground. For example, the grinding media can be ceramic balls, etc. In some embodiments, the grinding media can also be constructed in other shapes. The size of the largest grinding media can be its maximum size, i.e., the distance between the two farthest points on the largest grinding media.
[0038] 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 partition 31. The area of the orthographic projection of the partition 31 can be the area of the envelope circle of the orthographic projection of the partition 31. In some embodiments, the partition 31 is provided with a first shaft hole 312, and the rotating shaft 20 passes through the first shaft hole 312. The area of the orthographic projection of the partition 31 can be the remaining area after subtracting the area of the orthographic projection of the first shaft hole 312 from the area of the envelope circle of the orthographic projection of the partition 31.
[0039] The specific ratio of the area of the orthographic projection of the through groove 311 to the area of the orthographic projection of the partition 31 can be 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 partition 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.
[0040] Along the axial direction X of the rotating shaft 20, the shape of the orthographic projection of the through groove 311 can be specifically set according to actual needs, and is not specifically limited in this application. For example, the shape of the through groove 311 can be constructed as U-shaped, Ω-shaped, semi-circular, triangular, square, etc. Exemplarily, in this embodiment, the shape of the through groove 311 is Ω-shaped. Along the direction of the central axis of the rotating shaft 20 toward the through groove 311, the width of the through groove 311 along the circumferential direction Y of the rotating shaft 20 changes with a trend of "increasing-decreasing-increasing", that is, the width of the through groove 311 along the circumferential direction Y of the rotating shaft 20 first increases from small to large, then decreases from large to small, and then increases from small to large again. In some embodiments, the through groove 311 can be U-shaped, and along the direction of the central axis of the rotating shaft 20 toward the through groove 311, the width of the through groove 311 along the circumferential direction Y of the rotating shaft 20 changes with a trend of "increasing-remaining unchanged-increasing".
[0041] The wall of the through groove 311 near the rotating shaft 20 is concave towards the rotating shaft 20. The wall of the through groove 311 near the rotating shaft 20 is curved in an arc towards the rotating shaft 20. This avoids the formation of a "dead angle" at the connection between the two opposite walls of the through groove 311 along the circumferential direction Y of the rotating shaft 20 and the wall near the rotating shaft 20. When the grinding media enters the through groove 311, it can scrape off the material adhering to the connection between the walls, preventing material accumulation in the through groove 311, thus ensuring that the material to be ground is fully ground and improving the uniformity of the grinding process.
[0042] Multiple through slots 311 are arranged at intervals along the circumferential direction Y of the rotating shaft 20. For example, the multiple through slots 311 can be arranged at equal intervals to reduce the processing difficulty of the separator 31 and improve the grinding quality of the grinding equipment 1000. In some embodiments, the multiple through slots 311 can be arranged at unequal intervals, or a portion of the multiple through slots 311 can be arranged at equal intervals while another portion is arranged at unequal intervals.
[0043] For example, each of the plurality of through slots 311 is configured to have the same shape and size. In some embodiments, at least some of the plurality of through slots 311 may have different shapes and / or sizes. For example, some of the through slots 311 may be U-shaped, while others may be triangular.
[0044] 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.
[0045] Each first stirring paddle 32 includes a first fixing part 321 and a plurality of first stirring parts 322. The first fixing part 321 is disposed on the rotating shaft 20. The first fixing part 321 is provided with a second shaft hole 3211. The rotating shaft 20 passes through the second shaft hole 3211. The plurality of first stirring parts 322 are disposed at intervals on the first fixing part 321 along the circumferential direction Y of the rotating shaft 20. The first stirring parts 322 extend away from the rotating shaft 20 relative to the first fixing part 321. When the rotating shaft 20 drives the first stirring paddle 32 to rotate, the first stirring parts 322 stir the grinding media and the material to be ground. The number of first stirring parts 322 in each first stirring paddle 32 can be set according to actual needs, and is not specifically limited in this application. For example, the number of first stirring parts 322 can be two, three, etc. The number of first stirring parts 322 on different first fixing parts 321 can be the same or different.
[0046] At least two of the plurality of first stirring sections 322 are inclined relative to the central axis of the first fixed section 321. The central axis of the first fixed section 321 is parallel or collinear with the central axis of the rotating shaft 20. Exemplarily, in this embodiment, each of the first stirring sections 322 in the first stirring paddle 32 is inclined relative to the central axis of the first fixed section 321. In some embodiments, the number of first stirring sections 322 in the first stirring paddle 32 can be set to an even number, with the even number of first stirring sections 322 evenly spaced along the circumferential direction Y of the rotating shaft 20. Among the even number of first stirring sections 322, two first stirring sections 322 with the same inclination direction and angle relative to the central axis of the first fixed section 321 are symmetrically arranged with respect to the central axis of the first fixed section 321. The first stirring paddle 32 can be centrally symmetrically arranged to improve the stability of the first stirring paddle 32 during rotation.
[0047] The first stirring paddle 32 can be tilted in a left-hand or right-hand direction. The first stirring section 322 can be flat, and the plane of the first stirring section 322 is set at an angle to the central axis of the first fixing section 321. In some embodiments, the first stirring section 322 can also be spirally arranged, and the tangent direction of the side of the first stirring section 322 along the axial direction X of the rotating shaft 20 is set at an angle to the central axis of the first fixing section 321.
[0048] The connection between the first stirring part 322 and the first fixing part 321 is rounded to reduce stress concentration at the connection, improve the connection strength between them, and prevent cracks from forming in the first stirring paddle 32 during operation. The edges and corners of the first stirring part 322 are also rounded to prevent them from breaking.
[0049] Please refer to the following: Figure 1 , Figure 2 , Figure 4 and Figure 5 , Figure 5 This is an exploded view of the first stirring impeller 32 provided in some embodiments of this application. In some embodiments, the first fixing part 321 and the first stirring part 322 are detachably connected. It is understood that the first stirring part 322 plays a major driving role in stirring the grinding media and the material to be ground, and the first stirring part 322 is prone to wear after long-term operation. The first stirring part 322 is detachable from the first fixing part 321, so that the first stirring part 322 can be replaced separately, thereby avoiding the need to replace the entire first stirring impeller 32 and reducing the maintenance cost of the grinding equipment 1000. In addition, when the first fixing part 321 is damaged or broken, the first fixing part 321 can also be replaced separately. One of the first fixing part 321 and the first stirring part 322 is provided with a snap-fit groove 3212, and the other is provided with a snap-fit protrusion 3221, which is used to snap into the snap-fit groove 3212. In some embodiments, the first fixing part 321 and the first stirring part 322 can be integrally formed to reduce the manufacturing process steps of the first stirring paddle 32 and reduce the assembly difficulty of the first stirring paddle 32.
[0050] Each grinding chamber 1011 is provided with at least one stirring assembly 320. Each stirring assembly 320 includes multiple 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 the 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 media and the material to be ground in opposite directions, thereby causing the grinding media and the material to be ground to collide and rub against each other, increasing the degree of disorder of the material to be ground in the grinding chamber 1011, and improving the grinding effect of the material. Among them, the inclination direction of the first stirring portion 322 of two adjacent first stirring paddles 32 in each stirring assembly 320 is opposite to that of the first fixed part 321. The first stirring parts 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 part 322 of one of the two adjacent first stirring paddles 32 is located between the two adjacent first stirring parts 322 of the other first stirring paddle 32.
[0051] The number of 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, each stirring assembly 320 is provided with two first stirring paddles 32. In some embodiments, the number of first stirring paddles 32 in each stirring assembly 320 can also be four, six, etc. The number of 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.
[0052] Please refer to the following: Figure 1 , Figure 2 and Figure 6 , Figure 6 This is a schematic diagram of the structure of the second stirring paddle 33 provided in this embodiment. The grinding equipment 1000 also includes a second stirring paddle 33 disposed on the rotating shaft 20. In this embodiment, each grinding sub-cavity 1011 is provided with a plurality of stirring components 320. The second stirring paddle 33 is located between two adjacent stirring components 320. The second stirring paddle 33 is used to push the material in the grinding sub-cavity 1011 to move along the axial direction X of the rotating shaft 20.
[0053] The second stirring paddle 33 includes a second fixing part 331 and a plurality of second stirring parts 332. The second fixing part 331 is disposed on the rotating shaft 20. The second fixing part 331 is provided with a third shaft hole 3311. The rotating shaft 20 passes through the third shaft hole 3311. The plurality of second stirring parts 332 are disposed at intervals on the second fixing part 331 along the circumferential direction Y of the rotating shaft 20. The second stirring parts 332 extend away from the rotating shaft 20 relative to the second fixing part 331. The number of second stirring parts 332 in each second stirring paddle 33 can be set according to actual needs, and is not specifically limited in this application. For example, the number of second stirring parts 332 can be four, five, etc. The number of second stirring parts 332 on different second fixing parts 331 can be the same or different.
[0054] The second stirring paddle 33 has more second stirring sections 332 than the first stirring sections 322 on the first stirring paddle 32. The second stirring paddle 33 can agitate the grinding media and the material to be ground more frequently, thereby further improving the grinding effect and efficiency. The pushing effect of the second stirring paddle 33 on the material is greater than that of the first stirring paddle 32, which is beneficial for the material to move along the axial direction X of the rotating shaft 20.
[0055] At least two second stirring sections 332 in the second stirring paddle 33 are inclined relative to the central axis of the second fixed section 331. The central axis of the second fixed section 331 is parallel or collinear with the central axis of the rotating shaft 20. Exemplarily, in this embodiment, each second stirring section 332 in the second stirring paddle 33 is inclined relative to the central axis of the second fixed section 331. The inclination direction of the second stirring section 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 section 332 pushes the material towards the discharge port of the cylinder 10. The second stirring section 332 can be inclined in a left-hand or right-hand direction.
[0056] In some embodiments, the number of second stirring parts 332 in the second stirring paddle 33 can be set to an even number. The even number of second stirring parts 332 are evenly spaced along the circumferential direction Y of the rotating shaft 20. 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 symmetrically arranged with respect to the central axis of the second fixed part 331. The second stirring paddle 33 can be centrally symmetrically arranged to improve the stability of the second stirring paddle 33 during rotation.
[0057] The second stirring part 332 may be flat, and the plane direction of the second stirring part 332 is set at an angle to the central axis of the second fixing part 331. In some embodiments, the second stirring part 332 may also be spiral, and the tangent direction of the side of the second stirring part 332 along the axial direction X of the rotating shaft 20 is set at an angle to the central axis of the second fixing part 331.
[0058] The inclination of the second stirring section 332 relative to the second fixed section 331 is less than the inclination of the first stirring section 322 relative to the first fixed section 321, thereby increasing the residence time of the material at the position of the second stirring paddle 33. This facilitates thorough stirring of the material by the second stirring paddle 33 as it propels the material to move axially along the rotating shaft 20. In some embodiments, the area of the second stirring section 332 can be smaller than the area of the first stirring section 322 in the orthographic projection onto a projection plane perpendicular to the axial direction X of the rotating shaft 20, further increasing the residence time of the material at the position of the second stirring paddle 33 and ensuring that the material is thoroughly stirred and ground before moving towards the discharge port.
[0059] The connection between the second stirring part 332 and the second fixing part 331 is rounded to reduce stress concentration at the connection, improve the connection strength between them, and prevent cracks from forming in the second stirring paddle 33 during operation. The edges and corners of the second stirring part 332 are also rounded to prevent breakage. In some embodiments, the second fixing part 331 and the second stirring part 332 are detachably connected. In some embodiments, the second fixing part 331 and the second stirring part 332 can be integrally formed.
[0060] In some embodiments, the grinding apparatus 1000 further includes a pusher paddle 34. The cylindrical body 10 also has a pusher chamber 102 communicating with the grinding chamber 101. A rotating shaft 20 is rotatably disposed within the pusher chamber 102. The pusher paddle 34 is disposed at a position on the rotating shaft 20 corresponding to the pusher chamber 102. The cylindrical body 10 has a discharge port 1031 and a feed port 1032. The grinding chamber 101 is disposed near and communicates with the discharge port 1031. The discharge port 1031 is located at the end of the cylindrical body 10 corresponding to the grinding chamber 101 and away from the pusher chamber 102. The pusher chamber 102 is disposed near and communicates with the feed port 1032. The feed port 1032 is located at a position on the cylindrical body 10 corresponding to the pusher chamber 102. After the material to be ground enters the feeding chamber 102 through the feed inlet 1032, the pusher 34 pushes the material into the grinding chamber 101 for grinding. After the particle size of the material is ground to meet the requirements, the material is discharged from the discharge outlet 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 feeding chamber 102, so that the grinding media can fully grind the material to be ground.
[0061] The pusher paddle 34 includes a pusher fixing part 341 and a plurality of pusher paddle parts 342. The pusher fixing part 341 is disposed on the rotating shaft 20. The plurality of pusher paddle parts 342 are disposed at intervals on the pusher fixing part 341 along the circumferential direction Y of the rotating shaft 20. The pusher paddle parts 342 extend relative to the pusher fixing part 341 in a direction away from the rotating shaft 20. The number of pusher paddle parts 342 in each pusher paddle 34 can be set according to actual needs, and is not specifically limited in this application. For example, the number of pusher paddle parts 342 can be two, three, four, etc.
[0062] The pusher blades 342 of multiple pusher blades 34 are arranged in a spiral pattern. The projections of the pusher blades 342 of two adjacent pusher blades 34 on a plane perpendicular to the central axis of the rotating shaft 20 are staggered. This allows the material to be immediately pushed by the pusher blade 342 of the next adjacent pusher blade 34 after being pushed by the previous pusher blade 34, improving the pushing effect of the pusher blades 34 on the material. The pusher blades 342 of two adjacent pusher blades 34 can be staggered at 90°.
[0063] The pusher portion 342 of the pusher paddle 34 is inclined relative to the central axis of the pusher fixing portion 341. The inclination of the pusher portion 342 relative to the pusher fixing portion 341 is greater than the inclination of the first stirring portion 322 relative to the first fixing portion 321. In some embodiments, the inclination direction of the first stirring portion 322 of the first stirring paddle 32 near the pusher paddle 34 in the stirring assembly 320 is the same as the inclination direction of the pusher paddle 34, so as to facilitate pushing the material to the position of the corresponding first stirring paddle 32 in the stirring assembly 320 for stirring and grinding. The inclination direction of the second stirring portion 332 is the same as the inclination direction of the pusher paddle 34, so as to facilitate the movement of the material toward the discharge port 1031.
[0064] In some embodiments, the inclination of the second stirring part in the second stirring paddle 33 relatively closer to the pushing chamber 102 is greater than the inclination of the second stirring part in the second stirring paddle 33 relatively farther from the pushing chamber 102, and / or, the inclination of the first stirring part 322 in the first stirring paddle 32 relatively closer to the pushing chamber 102 is greater than the inclination of the first stirring part 322 in the first stirring paddle 32 relatively farther from the pushing chamber 102, so that the material moves slowly in the grinding chamber 101 and the material is sufficiently ground.
[0065] Along the axial direction X of the rotating shaft 20, the end faces of the pusher 34, the second stirring paddle 33, the first stirring paddle 32, and the separator 31 are sealed together to prevent materials from entering the connection position with the rotating shaft 20 and to prevent debris generated during the operation of the rotating shaft 20 from contaminating the materials.
[0066] The grinding equipment 1000 also includes a stop component. Stop grooves are respectively provided on the rotating shaft 20, the pusher 34, the second stirring paddle 33, the first stirring paddle 32, and the separator 31. The stop component is housed within the stop groove to achieve a snap-fit fixation between the pusher 34, the second stirring paddle 33, the first stirring paddle 32, the separator 31, and the rotating shaft 20. The stop component can be configured as a key, with a keyway in the stop groove. The key is housed within the keyway and abuts against the rotating shaft 20, the pusher 34, the second stirring paddle 33, the first stirring paddle 32, and the separator 31, respectively. The rotating shaft 20 drives the pusher 34, the second stirring paddle 33, the first stirring paddle 32, and the separator 31 to rotate together with the rotating shaft 20 via the key.
[0067] Please refer to the following: Figure 1 , Figure 2 and Figure 7 , Figure 7 This is a schematic diagram of the structure of the discharge paddle 35 provided in this embodiment. The grinding equipment 1000 also includes the discharge paddle 35 and the screen 11. The discharge paddle 35 is disposed at the end of the rotating shaft 20 near the discharge port 1031. The screen 11 is disposed at the discharge port 1031. The discharge paddle 35 is used to stir the material near the screen 11 to prevent the material from clogging the screen 11, so that the ground material can pass smoothly through the screen 11 and improve the discharge efficiency.
[0068] The discharge paddle 35 includes a base 351 and a protrusion 352. The protrusion 352 is located on the side of the base 351 near the discharge port 1031. The protrusion 352 can increase the contact area between the discharge paddle 35 and the material. When the rotating shaft 20 drives the discharge paddle 35 to rotate, the discharge paddle 35 can fully agitate the material near the discharge port 1031 and lift the grinding media and material, promoting the separation of the grinding media and the material. It also ensures that the material is in full contact with all parts of the screen 11, increasing the contact opportunity between the material and the screen 11 and increasing the possibility of the ground material passing through the screen 11, thereby improving the material discharge efficiency and preventing the material from accumulating at the discharge port 1031, thus preventing the material pipe from clogging the screen 11.
[0069] In some embodiments, the distance between the protrusion 352 and the screen 11 is less than the size of the grinding media, so that the protrusion 352 blocks the grinding media, preventing the grinding media from being stuck between the protrusion 352 and the screen 11, thereby preventing the grinding media from damaging the discharge paddle 35 and the screen 11. The distance between the protrusion 352 and the screen 11 can be the distance along the axial direction X of the rotation axis 20 between the end of the protrusion 352 away from the base 351 and the end of the screen 11 near the protrusion 352. The size of the grinding media can be the minimum size of the grinding media. The minimum size of the grinding media is the minimum thickness or minimum height of the grinding media as a whole, and the minimum size of the grinding media corresponds to the minimum width of the gap through which the grinding media can pass. The shape of the grinding media can be spherical. The size of the grinding media can be the diameter of the grinding media. The grinding media can be configured as a non-metallic grinding media to avoid the introduction of metallic impurities into the material to be ground. For example, the grinding media can be configured as ceramic balls, etc. In some embodiments, the grinding media can also be configured in other shapes.
[0070] 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 media, so as to sufficiently prevent the grinding media from getting 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 media, that is, less than the radius of the grinding media.
[0071] The corners of the base 351 are rounded, and / or the corners of the protrusion 352 are rounded. At least one corner of the protrusion 352 is rounded to improve the structural strength of its edges and corners, reducing or preventing damage or breakage. Exemplarily, all edges and corners of the protrusion 352 are rounded. The radius of the rounded corners at the edges and corners of the protrusion 352 may be smaller than the radius of the grinding media. The connection between the protrusion 352 and the base 351 is rounded to reduce stress concentration at the connection, improve the connection strength between the protrusion 352 and the base 351, and prevent cracks from forming in the discharge paddle 35 during operation.
[0072] The corners of the base 351 can be rounded to reduce wear. In some embodiments, the radius of the rounded corners near the end of the base 351 away from the rotating shaft 20 is larger than the radius of the rounded edge of the base 351 near the rotating shaft 20. The radius of the rounded corners of the end of the base 351 that connects to the protrusion 352 is larger than the radius of the rounded edge of the base 351 near the rotating shaft 20. It is understood that when the rotating shaft 20 drives the discharge paddle 35 to rotate, the end of the base 351 away from the rotating shaft 20 has a higher rotational linear velocity, and therefore the contact with the grinding media is more intense. Setting a larger radius of rounded corners near the end position helps to reduce wear at the end, thereby improving the service life of the discharge paddle 35.
[0073] In some embodiments, the cross-sectional area of the protrusion 352 along the radial direction 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 of the rotating shaft 20 is perpendicular to the axial direction X of the rotating shaft 20. Specifically, along the axial direction X of the rotating shaft 20, the cross-sectional area of the protrusion 352 relative to the position closer to the base 351 is greater than the cross-sectional area of the protrusion 352 relative to the position farther from the base 351. During the movement of the protrusion 352, the material sandwiched between the protrusion 352 and the screen 11 exerts pressure on the screen 11. The reduced cross-sectional area of the protrusion 352 near the screen 11 can reduce the pressure of the material on the screen 11, preventing damage to the screen 11. It also allows the distance between the protrusion 352 and the screen 11 to be set to a smaller value, thereby improving the agitation effect of the protrusion 352 on the material near the screen 11 and effectively preventing material blockage of the screen 11. Along the axial direction X of the rotating shaft 20, the cross-sectional area of the protrusion 352 decreases linearly, non-linearly, or remains constant before decreasing linearly or non-linearly from the end near 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 of the rotating shaft 20 remains constant from the base 351 to the protrusion 352.
[0074] The protrusion 352 can be configured as a triangular pyramid, triangular prism, square pyramid, square prism, cone, cylinder, elliptical cylinder, frustum, truncated cone, or polyhedron with its base surface set on the base 351. The perpendicular line drawn from the face 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 rotation axis 20.
[0075] In some embodiments, the protrusion 352 may be configured as a prism with its bottom surface disposed on the base 351. The protrusion 352 may be constructed as a triangular prism, a quadrangular prism, or a polyhedral prism, etc. In some embodiments, the bottom surface of the prism may be one of the end faces of the prism along its length direction, the length direction of the prism being parallel to the axial direction of the rotation shaft 20. The side surface of the protrusion 352 facing away from the base 351 is planar. In some embodiments, the bottom surface of the prism may be one of the side faces of the prism located between opposite ends in the length direction, the side edge of the prism extending along its length direction being perpendicular to the axial direction X of the rotation shaft 20. The side edge of the prism extending along its length direction may be perpendicular to the radial direction R of the rotation shaft 20. In some embodiments, one side edge of the protrusion 352 is located on the side of the protrusion 352 away from the base 351, and the perpendicular line drawn from the side edge to the bottom surface of the protrusion 352 is parallel to the axial direction X of the rotation shaft 20. The side of the protrusion 352 away from the base 351 has two planes arranged at an angle. In some embodiments, one side surface of the protrusion 352 is located on the side of the protrusion 352 away from the base 351, and this side surface is perpendicular to the axial direction X of the rotation shaft 20. The surface of the side of the protrusion 352 away from the base 351 is a plane. The edge of the protrusion 352 may be rounded. In some embodiments, the protrusion 352 may also be configured as a cylinder or an elliptical cylinder, where the bottom surface of the cylinder is one end face of the cylinder, and the bottom surface of the elliptical cylinder is one end face of the elliptical cylinder.
[0076] In some embodiments, the protrusion 352 may be configured as a pyramid or a cone, with its bottom surface connected to the base 351 and its tip located on the side of the protrusion 352 away from the base 351. The surface of the protrusion 352 facing away from the base 351 is a conical surface. The pyramid may be a triangular pyramid, a square pyramid, a multi-faceted pyramid, etc. The tip of the protrusion 352 may be rounded to avoid forming sharp corners. The edges of the protrusion 352 may have rounded transitions.
[0077] In some embodiments, the protrusion 352 may be configured as a frustum or a truncated cone. The larger end of the protrusion 352 is connected to the base 351, the smaller 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 larger end of the protrusion 352 away from the smaller end. The edges of the protrusion 352 are rounded.
[0078] In some embodiments, the surface 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, frustum, cylinder, or truncated cone, etc., with the central axis of the protrusion 352 parallel to the axial direction X of the rotating shaft 20, and the end face of the protrusion 352 away from the base 351 protruding arc-shaped in a direction away from the base 351. The distance between the end of the circumferential side of the protrusion 352 away from the base 351 and the screen 11 can be smaller than the size of the grinding media. In some embodiments, the protrusion 352 can also be configured as other polyhedra, which are not specifically limited in this application.
[0079] The grinding apparatus 1000 also includes a driver 40. A clearance hole is provided at one end of the cylinder 10, and a rotating shaft 20 extends out of the cylinder 10 from the clearance hole. The driver 40 is 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.
[0080] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A grinding device, characterized in that, include: A cylindrical body, wherein the cylindrical body is provided with a grinding chamber; A rotating shaft is rotatably disposed within the grinding chamber; A separator is disposed on the rotating shaft. The separator divides the grinding chamber into multiple grinding sub-cavities. A through groove is provided on the separator, penetrating the circumferential sidewall of the separator. The through groove connects two adjacent grinding sub-cavities. Multiple first stirring blades are disposed on the rotating shaft, and at least one first stirring blade is disposed in each of the grinding chambers.
2. The grinding equipment according to claim 1, characterized in that, The corners of the through groove are rounded.
3. The grinding equipment according to claim 1, characterized in that, The groove wall on the side of the through groove closest to the rotating shaft is curved in an arc towards the direction of the rotating shaft.
4. The grinding equipment according to claim 3, characterized in that, Along the central axis of the rotating shaft toward the through groove, the width of the through groove along the circumferential direction of the rotating shaft first increases, then decreases, and then increases again.
5. The grinding equipment according to claim 1, characterized in that, The cylindrical body is used to contain the grinding media, and the through groove allows the grinding media to pass through.
6. The grinding equipment according to claim 1, characterized in that, The through slots are configured as a plurality of slots, which are arranged at intervals along the circumferential direction of the rotating shaft.
7. The grinding equipment according to claim 1, characterized in that, On the projection plane perpendicular to the axial direction of the rotating shaft, the area of the orthographic projection of the through groove accounts for 1%-5% of the area of the orthographic projection of the separator.
8. The grinding equipment according to claim 1, characterized in that, Each of the first stirring blades includes a first fixing part and a plurality of first stirring parts. The first fixing part is disposed on the rotating shaft, and the plurality of first stirring parts are disposed at intervals on the first fixing part along the circumferential direction of the rotating shaft. At least two of the first stirring parts are inclined relative to the central axis of the first fixing part.
9. The grinding equipment according to claim 8, characterized in that, The first fixing part and the first stirring part are integrally formed, or the first fixing part and the first stirring part are detachably connected.
10. The grinding equipment according to claim 8, characterized in that, The grinding equipment further includes a second stirring paddle disposed on the rotating shaft. Each grinding sub-cavity is provided with a plurality of stirring components. Each stirring component includes a plurality of first stirring paddles. The inclination direction of the first stirring part of at least one first stirring paddle in each stirring component is different from the inclination direction of the first stirring part of the other first stirring paddles. The second stirring paddle is located between two adjacent stirring components. The second stirring paddle includes a second fixing part and a plurality of second stirring parts. The second fixing part is disposed on the rotating shaft. The plurality of second stirring parts are disposed at intervals on the second fixing part along the circumferential direction of the rotating shaft. The number of second stirring parts on the second stirring paddle is greater than the number of first stirring parts on the first stirring paddle.
11. The grinding apparatus according to claim 10, characterized in that, At least two of the second stirring parts in the second stirring paddle are inclined relative to the central axis of the second fixed part.
12. The grinding equipment according to claim 1, characterized in that, The grinding equipment further includes a pusher paddle, and the cylinder is also provided with a pusher chamber communicating with the grinding chamber. The cylinder is provided with a discharge port and a feed port. The grinding chamber is located near the discharge port and is connected to the discharge port. The pusher chamber is located near the feed port and is connected to the feed port. The rotating shaft is rotatably disposed in the pusher chamber, and the pusher paddle is disposed at the position of the rotating shaft corresponding to the pusher chamber.
13. The grinding equipment according to claim 1, characterized in that, The grinding equipment also includes a discharge paddle. The end of the cylinder is provided with a discharge port that communicates with the grinding chamber. The discharge paddle is located at the end of the rotating shaft near the discharge port. The discharge paddle includes a base and a protrusion. The protrusion is located on the side of the base near the discharge port.
14. The grinding apparatus according to claim 13, characterized in that, The protrusion is configured as a polygonal prism, polygonal pyramid, cylinder, cone, frustum or truncated pyramid with its bottom surface set on the base. The perpendicular line drawn from the face or edge of the protrusion away from the base to the bottom surface of the protrusion is parallel to the axial direction of the rotating shaft.
15. The grinding apparatus according to claim 13, characterized in that, The grinding equipment also includes a screen disposed at the discharge port, the cylinder is used to contain the grinding media, and the distance between the protrusion and the screen is smaller than the size of the grinding media.