Grinding and drying apparatus

Abstract

The pulverizing and drying apparatus provided by the embodiment of the present application includes a classifying unit, a first housing, and a second housing connected in sequence along the direction of gravity, the first housing is used for receiving and pulverizing a material, the second housing is used for conveying an airflow to the first housing to dry the material, and the classifying unit is used for sieving and discharging the target material after pulverization and drying, the target material being a material with a particle size smaller than a preset threshold. The pulverizing and drying apparatus provided by the embodiment of the present application can simultaneously pulverize and dry the material, thereby reducing the space occupied by the pulverizing and drying apparatus and improving the production efficiency of the target material.

Description

Technical Field

[0001] This application relates to the field of industrial equipment technology, and particularly to a pulverizing and drying device.

[0002] Cross-reference to Related Applications This application claims the priority of a Chinese patent application with the application number 202320709878.7 and the title "Pulverizing and Drying Device", which was filed on April 3, 2023, and the entire content of the application is incorporated herein by reference.

Background Art

[0003] Currently, the manufacturing process of powder materials for chemical industrial products mainly includes multiple processes such as material blending, reaction manufacturing, washing, filtration, drying, pulverization, uniform mixing, and finished products. Among them, powder drying and pulverization are important factors affecting the quality stability of products.

[0004] In the conventional powder production process, it is often necessary to use drying and pulverizing devices to perform drying and pulverizing treatments on the powder in sequence. As a result, not only does the number of devices increase and the occupied area become larger, but the process flow is long, which affects the manufacturing efficiency of products.

Summary of the Invention

[0005] Embodiments of this application provide a pulverizing and drying device that can simultaneously perform pulverization and drying of materials, thereby reducing the occupied area of the device and improving the manufacturing efficiency of target materials.

[0006] [[ID=3……]] According to a first aspect, it includes a classification unit, a first housing, and a second housing that are sequentially connected along the gravity direction. The first housing is used to accommodate and pulverize materials, the second housing is used to convey air flow to the first housing to dry the materials, the classification unit is used to screen and discharge the target materials after pulverization and drying, and the target materials are materials with a particle size smaller than a preset threshold value. A pulverizing and drying device is provided.

[0007] The pulverizing and drying apparatus in this embodiment can perform pulverizing and drying of materials simultaneously, thereby reducing the area occupied by the apparatus and improving the manufacturing efficiency of the target material.

[0008] In some feasible forms, the bottom of the second housing includes an insulating member to isolate the heat of the airflow from diffusing downward.

[0009] In the above embodiment, an insulating material is installed at the bottom of the second housing, which can block the downward diffusion of heat from the airflow to some extent, thereby reducing heat loss and improving the drying effect on the material.

[0010] In several feasible configurations, an air intake is provided on the side wall of the second housing, and the airflow passes through the air intake and enters the second housing.

[0011] In the above embodiment, the airflow passes through the intake port and enters the second housing, then moves upward and can be discharged upward by the action of the bottom wall of the second housing, thereby allowing the material inside the first housing to undergo drying treatment.

[0012] In some feasible forms, the airflow is a hot airflow.

[0013] In the above embodiment, the material can be dried with a hot airflow, thereby improving the drying effect on the material.

[0014] In several feasible forms, the pulverizing and drying apparatus further includes a first rotating shaft, a pulverizing member is installed at the bottom of the first housing, the pulverizing member is fixed to the first rotating shaft, and is used to pulverize the material while the first rotating shaft is rotating.

[0015] In the above embodiment, a grinding member is installed at the bottom of the first housing, and the grinding member can be rotated by the drive of the first rotating shaft, thereby performing a grinding process on the material. At the same time, during the material grinding process, the second housing conveys airflow to the first housing, enabling simultaneous grinding and drying of the material, thereby reducing the occupied area of ​​the grinding and drying apparatus and improving the manufacturing efficiency of the target material.

[0016] In several feasible forms, the grinding member comprises a body, a rotor, and at least one grinding block, wherein the rotor is located in the center of the body and fixed to the first rotating shaft, and the at least one grinding block is located at the horizontal end of the body.

[0017] In the above embodiment, the material can be crushed by the rotating crushing block within the crushing member.

[0018] In some feasible forms, the body is disc-shaped.

[0019] In the above embodiment, by installing the main body in a disc shape, the crushing member can rotate quickly and stably, thereby improving the efficiency of material crushing.

[0020] In several feasible configurations, a stator is installed on the side wall of the first housing, and along the horizontal direction, the stator is installed opposite the crushing block and has a gap between them.

[0021] In the above embodiment, a stator is installed on the side wall of the first housing, and the particle size after material grinding can be adjusted by adjusting the gap distance between the stator and the grinding block. Furthermore, the material can be ground by the frictional force between the stator and the grinding block against the material, thereby reducing the probability of wear on the side wall of the first housing during the material grinding process and extending the service life of the first housing.

[0022] In some possible embodiments, along the extending direction of the first housing, the dimension of the crushing block is smaller than the dimension of the stator.

[0023] In the above embodiment, by designing the height dimension of the crushing block to be smaller than the height dimension of the stator, it is possible to reduce the wear at the side wall position of the second housing located near the stator, which is beneficial for extending the service life of the second housing.

[0024] In some possible embodiments, the crushing block includes an alloy material.

[0025] In the above embodiment, the crushing block includes an alloy material, which can increase its hardness, thereby reducing the wear rate of the crushing block and improving the crushing strength against the material.

[0026] In some possible embodiments, the classification unit includes a second rotating shaft, a third housing, and a classification wheel. An outlet is installed on the side wall of the third housing. The classification wheel is installed at the bottom of the third housing and fixed to the second rotating shaft, and is used to screen the target material towards the outlet.

[0027] In the above embodiment, by installing a classification wheel in the classification unit to select the target material, the fineness of the material can be controlled by controlling the rotation speed of the classification wheel, thereby improving the quality of the target material.

[0028] In some possible embodiments, the classification unit further includes a scraper. The scraper is parallel to the gravitational direction, and one end of the scraper is fixed at a position facing the outlet of the second rotating shaft.

[0029] In the above embodiment, by installing a scraper in the third housing of the classification unit, it is possible to solve the problems that the target material adheres to the wall and the outlet is blocked during the rotation of the scraper.

[0030] In some possible embodiments, the pulverizing and drying device further includes a material supply unit connected to the side wall of the first housing, used for pre-pulverizing the material and conveying the material to the first housing.

[0031] In the above embodiment, by installing a material supply unit with a pre-pulverizing function, the size of the material entering the first housing can be made more uniform, and the pulverizing efficiency of the target material can be improved.

[0032] In some possible embodiments, the material supply unit includes a supply port, a crushing member, and a screw conveyor that are connected in sequence along the gravitational direction. The crushing member is used for performing pre-pulverizing treatment on the material, and the screw conveyor is used for conveying the pre-pulverized material to the first housing.

[0033] In the above embodiment, pre-pulverizing treatment on the material can be performed by the crushing member, making the size of the material more uniform. In the subsequent processing process, the device or components will not be caught due to the material being too large, and the material can be stably and uniformly conveyed to the first housing by the screw conveyor, improving the stability of the target material.

[0034] In some possible embodiments, the crushing member includes a third rotating shaft and a plurality of pulverizing columns installed on the third rotating shaft.

[0035] In some possible embodiments, the third rotating shaft is installed horizontally.

[0036] In the above embodiment, when the third rotating shaft is horizontally arranged, the contact area between the crushing member and the material is larger, and the effect of pre-pulverizing treatment on the material is better.

[0037] In some possible embodiments, the screw conveyor includes at least two screws installed opposite to each other along the horizontal direction.

[0038] In the above embodiment, at least two screws can mix, stir, and grind the material during the material transport process, that is, the material can be further processed, thereby improving the manufacturing efficiency of the target material. [Brief explanation of the drawing]

[0039] In order to more clearly explain the technical solutions in the embodiments of this application, the drawings necessary for the embodiments of this application are briefly described below, and it should be understood that the drawings shown below represent only a few embodiments of this application, and that those skilled in the art can obtain further drawings based on these drawings without requiring any creative effort.

[0040] [Figure 1] This is a schematic diagram of the pulverizing and drying apparatus according to an embodiment of the present invention. [Figure 2] These are schematic diagrams of the first and second housings according to embodiments of the present application. [Figure 3] This is a partial structural diagram of the first housing according to an embodiment of the present application. [Figure 4] This is a schematic diagram of the classification unit according to an embodiment of the present invention. [Figure 5] This is a schematic diagram of the material supply unit according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of another grinding and drying apparatus according to an embodiment of the present invention. [Figure 7] This is a schematic diagram of the screw conveyor according to an embodiment of the present invention.

[0041] In drawings, the drawings are not drawn according to actual proportions. [Modes for carrying out the invention]

[0042] Embodiments of the present application will be described in more detail below with reference to the drawings and examples. The detailed description of the following embodiments and drawings are used to illustrate the principles of the present application and are not intended to limit the scope of the present application, and the present application is not limited to the embodiments described.

[0043] In the description of this application, unless otherwise stated, "multiple" means two or more, and the directions or positional relationships indicated by terms such as "up," "down," "left," "right," "inside," and "outside" are merely to facilitate and simplify the explanation of this application, and do not indicate or imply that the devices or elements in question have a specific direction, or that they are composed of and should be operated in a specific direction, and therefore should not be understood as limiting this application. Furthermore, terms such as "first," "second," and "third" are used only for explanatory purposes and should not be understood as indicating or implying relative importance. "Perpendicular" does not mean perpendicular in the strict sense, but is within an acceptable margin of error. "Parallel" does not mean parallel in the strict sense, but is within an acceptable margin of error.

[0044] All directional expressions appearing in the following description refer to the directions shown in the diagrams and do not limit the specific structure of the present application. Further explanation is required in the description of this application. Unless otherwise explicitly specified and limited, the terms “attached,” “connected,” and “connected” should be understood in a broad sense. For example, they may be fixed connections, removable connections, or integral connections. They may be directly connected or indirectly connected via an intermediate medium. Those skilled in the art will be able to understand the specific meaning of these terms in this application depending on the specific circumstances.

[0045] In this application, the term "and / or" merely describes the relationship or connection between related objects, indicating that three types of relationships are possible. For example, A and / or B can represent three situations: A existing alone, A and B existing simultaneously, and B existing alone. In this application, the symbol " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0046] Unless otherwise defined, all technical and scientific terms used in this Application have the same meaning as those generally understood by those skilled in the art. Terms used in this Specification are for the sole purpose of describing specific embodiments and are not intended to limit this Application. The terms “includes” and “has” and their synonyms in the description of this Application, the Claims, and the Drawings are intended to be non-exclusive. Terms such as “first,” “second,” etc., in the Description of this Application, the Claims, or the Drawings are used to distinguish different subjects and are not used to describe a particular order or hierarchical relationship.

[0047] References to “Examples” in this Application mean that certain features, structures, or properties described in relation to the Examples may be included in at least one Example of this Application. Where the term “Examples” appears elsewhere in this Specification, it does not necessarily refer to the same Example, nor does it refer to an Example that is mutually exclusive, independent, or substitutable with other Examples. Those skilled in the art will understand, both explicitly and implicitly, that the Examples described herein can be combined with other Examples.

[0048] While the present application has been described with reference to preferred embodiments, various improvements and substitutions of components with equivalents can be made without departing from the scope of the application. In particular, each technical feature mentioned in each embodiment can be combined in any way, provided that there is no structural inconsistency. The present application is not limited to the specific embodiments disclosed herein and includes all technical solutions included in the claims.

[0049] Currently, in the manufacturing process of functional materials such as positive electrode active materials and negative electrode active materials for batteries, the raw materials must be processed through crushing, drying, and other methods to achieve powder formation. However, in the current powdering process, the raw materials generally need to be processed separately using crushing and drying equipment, which not only requires a large amount of equipment space but also affects the manufacturing efficiency of the materials.

[0050] In view of this, the embodiment of the present invention provides a grinding and drying apparatus that can simultaneously grind and dry materials, thereby reducing the space occupied by the grinding and drying apparatus and improving the manufacturing efficiency of functional materials.

[0051] Figure 1 is a schematic diagram of the structure of a grinding and drying apparatus 200 according to an embodiment of the present application. As shown in Figure 1, the grinding and drying apparatus 200 may include a classification unit 210 connected in order along the direction of gravity, a first housing 220, and a second housing 230.

[0052] The first housing 220 can be used to contain and crush the material. The second housing 230 can be used to dry the material by conveying an airflow to the first housing 220. The classification unit 210 can be used to sieve and discharge the target material after crushing and drying. The target material is a material whose particle size is smaller than a preset threshold.

[0053] Selectively, the classification unit 210 and the first housing 220, and the first housing 220 and the second housing 230 may be connected via removable connecting members, which may be, for example, bolts and nuts, or connected by welding, adhesive, or other means, and the present invention is not limited thereto.

[0054] Specifically, a first supply port 221 may be installed on the top or side wall of the first housing 220, and material can be introduced into the first housing 220 through the first supply port 221. The interior of the first housing 220 may include components for crushing the material. For example, a plurality of rotatable blades may be installed on the inner wall of the first housing 220 to crush the material when rotated, but this is not limited to this. Optionally, a plurality of vents may be installed on the wall where the first housing 220 and the second housing 230 face each other, allowing the airflow in the second housing 230 to move upward and dry the material inside the first housing 220 through the vents. A plurality of meshes may be installed on the opposing wall between the classification unit 210 and the first housing 220, and the size of the meshes can be set to be slightly larger than a preset threshold, for example, depending on the particle size requirements of the target material. The crushed and dried material inside the first enclosure 220 moves upward under the action of an upward airflow. Material with a particle size smaller than the mesh passes through the mesh, and material with a particle size larger than the mesh falls, and the crushing and drying process continues until the particle size requirements are met. The classification unit 210 may include an outlet 211, and target material that meets the particle size requirements is screened through a mesh and then discharged from the outlet 211. Selectively, a negative pressure fan may be installed on the outlet side of the outlet 211, which, in conjunction with the internal airflow, sucks out target material with a particle size smaller than a preset threshold.

[0055] In the embodiment of the present invention, the grinding and drying apparatus 200 can perform grinding and drying of the material simultaneously, which not only reduces the area occupied by the apparatus but also improves the manufacturing efficiency of the target material.

[0056] The pulverizing and drying apparatus 200 provided in the embodiment of this application can be used not only for the manufacture of the above-mentioned active material, but also in other applications including the manufacturing process of powdered or granular materials in industries such as chemical, pharmaceutical, and food industries, but is not limited to these applications.

[0057] Selectively, as shown in Figure 1, the grinding and drying apparatus may further include a base 201 for supporting the classification unit 210, the first housing 220, and the second housing 230.

[0058] In some embodiments, the bottom of the second housing 230 may include an insulating member 231, which can be used to isolate the downward diffusion of heat from the airflow.

[0059] Selectively, the heat insulating member 231 may be a heat insulating layer, such as a heat insulating pad, that fits the size of the bottom of the second housing 230.

[0060] Selectively, the heat insulating member 231 may be directly installed at the bottom of the second housing 230 or otherwise detachably connected to the second housing 230, thereby facilitating the replacement of the heat insulating member 231. Naturally, the heat insulating member 231 is located in the second housing 2 3 It may be fixedly connected by adhering it to the bottom wall of 0, and this invention is not limited thereto.

[0061] Selectively, the insulating member 231 may be manufactured and formed from a heat-insulating material and have an insulating and heat-retaining effect. For example, the insulating member 231 may be a light carbonaceous material, on the one hand, the insulating member is light in weight, which can reduce the overall weight of the crushing and drying apparatus 200, and on the other hand, using a carbonaceous material for the insulating member 231 results in a relatively lower cost, however, it is not limited to these.

[0062] Selectively, other members such as support members may be installed below the second housing 230, and an insulating member 231 can be installed at the bottom of the second housing 230 to block heat from diffusing downward and reduce the probability of the support member being damaged by heat.

[0063] In the above embodiment, a heat insulating member 231 is installed at the bottom of the second housing 230, which can block the downward diffusion of heat from the airflow to some extent, thereby reducing heat loss and improving the drying effect on the material.

[0064] In some embodiments, as shown in Figure 1, an air intake port 232 may be installed on the side wall of the second housing 230, and the airflow enters the second housing 230 through the air intake port 232. The direction of the airflow can be seen by referring to the direction of the arrow in Figure 1.

[0065] Specifically, when airflow enters the second housing 230 from the air intake 232, the heat insulating member 231 at the bottom of the second housing 230 can create a barrier and negative pressure effect against the airflow and its heat, causing the airflow to be discharged only upwards, thereby drying the material inside the first housing 220.

[0066] Selectively, the first housing 220 may have a hollow structure, meaning it does not have a bottom wall, which allows the airflow from the second housing 230 to be transported to the first housing 220, thereby improving the drying effect of the material.

[0067] In some embodiments, the above airflow may be a hot airflow.

[0068] Selectively, the intake port 232 may be connected to a hot air blower, and the second housing 2 3 Provides a hot airflow to dry the material.

[0069] Selectively, the temperature and pressure of the hot airflow can be set according to the requirements for the degree of material drying.

[0070] In the above embodiment, drying the material with a hot airflow can improve the drying effect and efficiency of the material.

[0071] Figure 2 is a schematic diagram of the first housing 220 and the second housing 230 according to an embodiment of the present application.

[0072] In some embodiments, the grinding and drying apparatus 200 further includes a first rotating shaft 240. As shown in Figure 2, a grinding member 222 is installed at the bottom of the first housing 220, and the grinding member 222 is fixed to the first rotating shaft 240 and used to grind materials while the first rotating shaft 240 is rotating.

[0073] Specifically, a drive unit (not shown) may be connected to the lower end of the first rotating shaft 240, and the drive unit can be installed within the base 201 of the device. The first rotating shaft 240 may be supported by a bearing base 250 fitted to the outside of the first rotating shaft 240. The bearing base 250 may contain bearings, which can reduce friction between the first rotating shaft 240 and the bearing base 250, making the rotation smoother.

[0074] Furthermore, by installing a heat insulating member 231 at the bottom of the second housing 230, heat can be prevented from diffusing to the bearing base 250, thereby reducing the probability of the bearing base 250 being damaged by heat.

[0075] For example, the drive unit may include a motor and a motor output shaft, the motor being connected to the motor output shaft and a driving wheel being provided on the motor output shaft, but is not limited to this. A driven wheel 241 may be provided at the lower end of the first rotating shaft 240, and a transmission belt is provided between the driving wheel and the driven wheel 241. The drive unit can drive and rotate the first rotating shaft 240 via the transmission belt.

[0076] When the first rotating shaft 240 begins to rotate, the crushing member 222 also rotates along with it, generating centrifugal force on the crushing member 222 during the rotation process, which allows the material to be sprinkled onto the side wall of the first housing 220. The material falls downward along the side wall of the first housing 220 between the crushing member 222 and the first housing 220, and the frictional force between the crushing member 222 and the material during the rotation process allows the material to be crushed and polished, thereby satisfying the particle size requirements of the material.

[0077] Selectively, as shown in Figure 2, the crushing member 222 and the first rotating shaft 240 may be detachably connected by a bolt connection or the like.

[0078] In the above embodiment, a crushing member 222 fixed to a first rotating shaft 240 is installed at the bottom of the first housing 220, so that the crushing member 222 can crush the material under the action of the first rotating shaft 240.

[0079] In some embodiments, as shown in Figures 2 and 3, the crushing member 222 may include a body 2221, a rotor 2222, and at least one crushing block 2223. The rotor 2222 is installed in the center of the body 2221 and can be fixed to the first rotation shaft 240. At least one rotor 2222 can be installed at the horizontal end of the body 2221.

[0080] Specifically, the rotor 2222 is fixed to the first rotating shaft 240, and when the drive device drives the first rotating shaft 240 to rotate, the rotor 2222 drives the main body 2221 and at least one crushing block 2223 to start rotating around the first rotating shaft 240, and when the material enters the first housing 220, the material can be crushed by the shear force of the crushing block 2223 on the material and the frictional force between the materials.

[0081] Specifically, as shown in Figure 3, the main body 2221 may be a hollow cylindrical body, and the hollow portion is used to allow the first rotation shaft 240 to pass through. The rotor 2222 may also be a hollow cylindrical body with an inner diameter the same as the inner diameter of the main body 2221, and is fixedly connected to the main body 2221.

[0082] Selectively, the rotor 2222 may be integrally molded with the main body 2221, or it may be two separate components.

[0083] Selectively, as shown in Figure 3, the crushing block 2223 and the main body 2221 may be detachably connected, or they may be connected to the main body 2221 by bolt connections or the like. Of course, the crushing block 2223 may also be fixedly connected to the main body 2221 by other methods such as welding or integral molding, and this application is not limited thereto.

[0084] Selectively, there may be multiple crushing blocks 2223, and the multiple crushing blocks 2223 can be uniformly installed on the upper surface of the main body 2221 along the circumferential direction of the main body 2221.

[0085] Specifically, one crushing block 2223 can be installed along the circumferential direction of the main body 2221 at predetermined intervals, and the external shape and dimensions of multiple crushing blocks 2223 may be the same. This allows the crushing member 222 to have high stability when it is rotating.

[0086] In the embodiment of the present invention, the material can be crushed by the rotating crushing block 2223 within the crushing member 222.

[0087] In some embodiments, the main body 2221 may be disc-shaped.

[0088] Specifically, the first housing 220 may be cylindrical, the disc-shaped main body 2221 and the first housing 220 are coaxial, and the diameter of the disc-shaped main body 2221 is smaller than the diameter of the first housing 220.

[0089] In the above embodiment, making the main body 2221 disc-shaped helps the crushing member 222 rotate quickly and stably, thereby improving the efficiency of material crushing.

[0090] In some embodiments, as shown in Figure 3, a stator 223 is installed on the side wall of the first housing 220, and the stator 223 is installed horizontally, facing the crushing block 2223 and having a gap t.

[0091] Specifically, the stator 223 may be cylindrical and fitted to the inner wall of the first housing 220, and the stator 223 can be installed facing the outer circumference of the crushing block 2223. There is a gap t between the stator 223 and the crushing block 2223, and the size of the gap t can be set according to the requirements for the particle size of the target material.

[0092] Specifically, when the drive unit drives the first rotating shaft 240 to rotate, the crushing member 222 also rotates along with it. After the material is placed in the first housing 220, centrifugal force is generated in the crushing member 222 during the rotation process, causing the material to be sprinkled onto the side wall of the first housing 220. The material falls downward along the side wall of the first housing 220 into the gap t between the crushing block 2223 and the stator 223. As the crushing member 222 rotates, the material is crushed and polished by the shear force of the crushing block 2223 on the material, the frictional force between the stator 223 and the material, and the frictional force between the materials.

[0093] The size of the gap t between the stator 223 and the crushing block 2223 may be adjusted selectively by increasing or decreasing the thickness of the stator 223, or, of course, by increasing or decreasing the diameter of the crushing member 222, and this invention is not limited thereto.

[0094] Selectively, the outer surface of the stator 223 may be rough, for example, burrs may be provided on the outer surface of the stator 223, thereby further grinding the material and improving the grinding efficiency of the material.

[0095] In the embodiment of the present invention, a stator 223 is installed on the side wall of the first housing 220, and the particle size after material crushing can be adjusted by adjusting the gap distance between the stator 223 and the crushing block 2223. Furthermore, the material can be crushed by the frictional force between the stator 223 and the crushing block 2223 against the material, thereby reducing the probability of wear of the side wall of the first housing 220 during the material crushing process and extending the service life of the first housing 220.

[0096] In some embodiments, as shown in Figure 3, along the extension direction of the first housing 220, the dimension H1 of the crushing block 2223 is smaller than the dimension H2 of the stator 223.

[0097] Specifically, the extension direction of the first housing 220 can be understood as the height direction of the first housing 220. Along the extension direction of the first housing 220, dimension H1 of the crushing block 2223 is the height dimension of the crushing block 2223. Similarly, along the extension direction of the first housing 220, dimension H2 of the stator 223 is the height dimension of the stator.

[0098] In the embodiment of the present invention, the height dimension of the crushing block 2223 is designed to be smaller than the height dimension of the stator 223, and the second housing 2 located near the stator 223 3 The wear on the side wall position of the second housing 2 can be reduced, 3 It is advantageous for extending the useful life of 0.

[0099] In some embodiments, the crushing block 2223 includes an alloy material.

[0100] Alloy materials are a different type of metallic material produced by fusing two or more metals through special forging techniques, and their hardness is generally higher than the hardness of any one of the metals in their composition.

[0101] Specifically, the hardness of the crushed block 2223 can be increased by inlaying an alloy material. For example, the alloy material may be an iron alloy, an aluminum alloy, a titanium alloy, etc., but is not limited to these.

[0102] In the above embodiment, the crushing block 2223 contains an alloy material, which can increase its hardness, thereby reducing the wear rate of the crushing block 2223 and improving the crushing strength against the material.

[0103] In some embodiments, as shown in Figure 4, the classification unit 210 may include a second rotating shaft 212, a third housing 213, and a classification wheel 214. An outlet 211 is provided on the side wall of the third housing 213. The classification wheel 214 is located at the bottom of the third housing 213 and is fixed to the second rotating shaft 212, and is used to sieve the target material toward the outlet 211.

[0104] Specifically, a motor 215 may be connected to the upper end of the second rotating shaft 212. The motor 215 is connected to a coupling 216, which in turn is connected to the second rotating shaft 212. The second rotating shaft 212 can be rotated by the motor 215. The classification wheel 214 may be fixed to the bottom end of the second rotating shaft 212, and when the second rotating shaft 212 rotates by the motor 215, the classification wheel 214 also rotates accordingly.

[0105] Specifically, the crushed and dried material moves upward under the action of the airflow, and at the same time the classification wheel 214 begins to rotate, generating a downward swirling airflow outwards. The material rising with the airflow is affected by the swirling airflow, and the larger material particles fall downward along the inner wall of the classification wheel 214, where they are crushed and dried again until they form smaller material particles. In contrast, the smaller material particles (target material) pass through the gaps in the blades of the classification wheel 214, enter the third housing 213, and are discharged through the outlet 211.

[0106] Furthermore, assuming other parameters remain unchanged, for example, the spacing of the blades of the classification wheel 214 can increase the rotational speed of the classification wheel 214, thereby improving the fineness of the material; otherwise, the fineness of the material will decrease. The classification wheel 214 can have a precise particle size cutting point, and the rotational speed of the classification wheel 214 can be adjusted within a certain range according to different requirements for the desired material particle size.

[0107] Selectively, as shown in Figure 4, the classification wheel 214 and the second rotating shaft 212 may be detachably connected by a bolt connection.

[0108] In the embodiment of the present invention, a classification wheel 214 is installed in the classification unit 210 to sort the target material. By controlling the rotational speed of the classification wheel 214, the fineness of the material can be controlled, thereby improving the quality of the target material.

[0109] In some embodiments, as shown in Figure 4, the classification unit 210 further includes a scraper 217, which is parallel to the direction of gravity and has one end fixed in a position facing the outlet 211 of the second rotation axis 212.

[0110] Selectively, the scraper 217 may be made of a metal or plastic material.

[0111] As can be understood, the target material screened by the classification wheel 214 may stick to the wall of the third housing 213 under the action of airflow and negative pressure. Also, if the target material is not collected immediately, clogging may occur in the discharge port 211. When one end of the scraper 217 is fixed to the second rotating shaft 212, the second rotating shaft 212 rotates due to the drive of the motor 215, and the scraper 217 rotates along with it, scraping off the target material on the side wall of the third housing 213, thereby solving the problem of the target material sticking to the wall. Alternatively, when one end of the scraper 217 is fixed in a position facing the discharge port 211, the second rotating shaft 212 rotates due to the drive of the motor 215, and the scraper 217 rotates along with it, scraping off the target material accumulated in the discharge port 211, thereby solving the problem of the discharge port 211 becoming clogged.

[0112] Selectively, the third housing 213 may be cylindrical, and the horizontal dimension of the scraper 217 may be slightly smaller than the radius of the third housing 213, so that the scraper 217 can rotate within the third housing 213 and scrape off material from the inner wall of the third housing 213.

[0113] Selectively, an elastic strip, such as a rubber strip, may be installed on one end of the scraper 217 facing the third housing 213. Due to its flexible properties, the rubber strip can reduce wear on the sidewalls of the third housing 213 by the material during the rotation of the scraper 217, thereby extending the service life of the third housing 213.

[0114] In the above embodiment, by installing a scraper inside the third housing 213 of the classification unit 210, the problem of the target material sticking to the wall and the discharge port 211 becoming clogged during the rotation of the scraper 217 can be solved.

[0115] In some embodiments, the grinding and drying apparatus 200 further includes a material supply unit 260. As shown in Figures 5 and 6, the material supply unit 260 may be connected to the side wall of the first housing 220 and is used to pre-grind the material and to transport the material to the first housing 220.

[0116] Specifically, the material supply unit 260 may be installed on one side of the first housing 220 and connected to the first supply port 221 on the side wall of the first housing 220.

[0117] Selectively, the connection between the material supply unit 260 and the first housing 220 may be a fixed connection such as welding, or a removable connection such as a bolt and nut connection, and the present invention is not limited thereto.

[0118] Specifically, the material supply unit 260 may include a component that performs a preliminary crushing treatment on the material, i.e., a coarse crushing treatment, and then the material after the preliminary crushing treatment is transported to the first housing for fine crushing treatment.

[0119] This makes it possible to make the size of the material entering the first enclosure 220 more uniform, thereby improving the efficiency of the crushing process.

[0120] In some embodiments, as shown in Figure 5, the material supply unit 260 may include a second supply port 261 connected in sequence along the direction of gravity, a crushing member 262, and a screw conveyor 263. The crushing member 262 can be used for preliminary crushing of the material. The screw conveyor 263 is used to transport the material after preliminary crushing to the first housing 220.

[0121] Selectively, the connection between the second supply port 261, the breaking member 262, and the screw conveyor 263 may be detachable or fixed, and the present invention is not limited thereto.

[0122] Specifically, a crumbling member 262 is installed at the outlet of the second supply port 261, and due to the action of gravity, the material enters the crumbling member directly from the second supply port 261 and undergoes preliminary crushing treatment via the crumbling member 262. A screw conveyor 263 is installed at the bottom outlet of the crumbling member 262. The preliminary crushed material enters the screw conveyor 263, allowing the material after preliminary crushing to be transported stably and at a constant speed into the first housing 220.

[0123] Selectively, the second supply port 261 may be a hollow cylinder, a hollow cone, or the like.

[0124] Selectively, as shown in Figure 5, the screw conveyor 263 may be a single-screw conveyor.

[0125] Selectively, a motor (not shown) may be connected to one end of the screw conveyor 263, and under the drive of the motor, the screw conveyor 263 can rotate the material at a constant speed and uniformly.

[0126] In the above embodiment, the material is pre-crushed by the crushing member 262, making the material size more uniform. This prevents the equipment or parts from getting stuck due to the material being too large during subsequent processing. Furthermore, the material can be stably and constantly transported to the first housing 220 by the screw conveyor 263, improving the stability of the target material.

[0127] In some embodiments, as shown in Figure 5, the crushing member 262 includes a third rotating shaft 2621 and a plurality of crushing columns 2622 installed on the third rotating shaft 2621.

[0128] Specifically, one crushing column 2622 may be installed at predetermined intervals along the circumferential direction of the third rotating shaft 2621, and the external shape and dimensions of the multiple crushing columns 2622 may be the same.

[0129] Specifically, a motor may be connected to one end of the third rotating shaft 2621, and the rotation of the third rotating shaft 2621 is driven by the motor. As the third rotating shaft 2621 rotates, the multiple crushing columns 2622 perform a preliminary crushing treatment on the material.

[0130] Selectively, the third rotating shaft 2621 may share a single motor with the screw conveyor 263, and this motor can be installed at the same end of both the third rotating shaft 2621 and the screw conveyor 263. This reduces the number of drive units in the crushing and drying apparatus 200.

[0131] In some embodiments, as shown in Figures 5 and 6, the third rotation axis 2621 may be installed horizontally.

[0132] In the above embodiment, when the third rotating shaft 2621 is positioned horizontally, the contact area between the crushing member 262 and the material is larger, and the effect of the pre-crushing treatment on the material is better.

[0133] In some embodiments, the screw conveyor 263 may include at least two screws 2631 that are positioned opposite each other along the horizontal direction.

[0134] Specifically, when material enters the screw conveyor 263, at least two screws 2631 begin to rotate under the drive of a motor. The rotation directions of two adjacent screws 2631 may be different, thereby reducing the risk of material sticking to the screws 2631. During the material conveying process, at least two screws 2631 can mix, stir, and crush the material, that is, further process the material and improve the manufacturing efficiency of the material. Furthermore, a screw conveyor 263 including at least two screws 2631 is suitable for materials with a large volume, high humidity, or that require stirring.

[0135] Selectively, as shown in Figure 7, the screw conveyor 263 may include two screws, i.e., the screw conveyor 263 may be a double screw conveyor.

[0136] Selectively, the size and dimensions of at least two screws of the screw conveyor 263 may be the same or different, and the present invention is not limited thereto.

[0137] Selectively, as shown in Figure 7, if at least two screws 2631 are installed facing each other horizontally, i.e., parallel to each other, the two screws 2631 can share one motor. For example, the motor can be installed at the same end of all the screws. The screws 2631 and the motor may be connected to a transmission belt via pulleys. This reduces the number of drive units in the grinding and drying apparatus 200.

[0138] While the present application has been described with reference to preferred embodiments, various improvements and substitutions of components with equivalents can be made without departing from the scope of the application. In particular, each technical feature mentioned in each embodiment can be combined in any way, provided that there is no structural inconsistency. The present application is not limited to the specific embodiments disclosed herein and includes all technical solutions included in the claims. [Explanation of Symbols]

[0139] 200 Grinding and drying equipment 210 Classification Units 220 First cabinet 230 Second enclosure 240 First rotation axis 241 Driven wheel 250 Bearing base 260 Material Supply Units 201 Bass 221 1st supply port 222 Crushing member 223 Stator 2221 Main Unit 2222 Rotor 2223 Crushed Block 211 Outlet 212 Second rotation axis 213 Third cabinet 214 Class Wheel 215 Motor 216 Coupling 217 Scraper 261 2nd supply port 262 Collapsed Member 263 Screw conveyor 2621 Third rotation axis 2622 Crushed Column 2631 Screw

Claims

1. It includes a classification unit (210) connected in order along the direction of gravity, a first housing (220), and a second housing (230), The first housing (220) is used for containing and crushing the material. The second housing (230) is used to deliver airflow to the first housing (220) to dry the material. The classification unit (210) is used to sieve and discharge the target material after crushing and drying, and the target material is a material whose particle size is smaller than a preset threshold. The second housing (230) comprises an air intake (232) installed on its side wall and a heat insulating member (231) installed at the bottom inside the second housing (230), the airflow passes through the air intake (232) and flows into the interior of the second housing (230), and the heat insulating member (231) isolates the heat of the airflow from diffusing to the outside from the bottom of the second housing (230). The classification unit (210) includes a second rotating shaft (212), a third housing (213), and a classification wheel (214). An outlet (211) is installed on the side wall of the third housing (213). The classification wheel (214) is installed at the bottom of the third housing (213) and fixed to the second rotating shaft (212), and is used to sieve the target material toward the discharge port (211). The classification unit (210) further includes a scraper (217), A crushing and drying apparatus wherein the scraper (217) is parallel to the direction of gravity, and one end of the scraper (217) is fixed in a position opposite to the discharge port (211) of the second rotating shaft (212).

2. The pulverizing and drying apparatus according to claim 1, characterized in that the airflow is a hot airflow.

3. Further including a first rotation axis (240), The crushing and drying apparatus according to claim 1, characterized in that a crushing member (222) is installed at the bottom of the first housing (220), the crushing member (222) is fixed to the first rotating shaft (240), and is used to crush the material while the first rotating shaft (240) is rotating.

4. The crushing member (222) includes a main body (2221), a rotor (2222), and at least one crushing block (2223), The rotor (2222) is installed in the center of the main body (2221) and fixed to the first rotating shaft (240), The grinding and drying apparatus according to claim 3, characterized in that the at least one grinding block (2223) is installed at the end of the main body (2221) along the horizontal direction.

5. The pulverizing and drying apparatus according to claim 4, characterized in that the main body (2221) is disc-shaped.

6. A stator (223) is installed on the side wall of the first housing (220). The pulverizing and drying apparatus according to claim 4, characterized in that the stator (223) is installed facing the pulverizing block (2223) along the horizontal direction and has a gap between them.

7. The grinding and drying apparatus according to claim 6, characterized in that, along the extension direction of the first housing (220), the dimensions of the grinding block (2223) are smaller than the dimensions of the stator (223).

8. The grinding and drying apparatus according to claim 4, characterized in that the grinding block (2223) contains an alloy material.

9. The crushing and drying apparatus according to any one of claims 1 to 8, further comprising a material supply unit (260) connected to the side wall of the first housing (220) and used for pre-crushing the material and transporting the material to the first housing (220).

10. The material supply unit (260) includes a second supply port (261) connected in order along the direction of gravity, a breaking member (262), and a screw conveyor (263). The aforementioned crushing member (262) is used for a preliminary crushing treatment of the material. The crushing and drying apparatus according to claim 9, characterized in that the screw conveyor (263) is used to transport the material after preliminary crushing to the first housing (220).

11. The crushing member (262) is characterized in that it includes a third rotating shaft (2621) and a plurality of crushing columns (2622) installed on the third rotating shaft (2621), as described in claim 10.

12. The crushing and drying apparatus according to claim 11, characterized in that the third rotating shaft (2621) is installed horizontally.

13. The crushing and drying apparatus according to claim 10, characterized in that the screw conveyor (263) includes at least two screws (2631) that are installed opposite to each other along the horizontal direction.

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