Crushing and drying equipment

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] The present application relates to the field of industrial equipment technology, and in particular to a grinding and drying device.

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to a Chinese patent application entitled "Crushing and Drying Apparatus," application number 202320709878.7, filed on April 3, 2023, the entire contents of which are incorporated herein by reference. [Background technology]

[0003] At present, the manufacturing process of powder materials for chemical industrial products mainly involves multiple processes, including material blending, reaction production, washing, filtration, drying, grinding, uniform mixing, and final product production. Among them, powder drying and grinding are important factors that affect the quality stability of the products.

[0004] In the conventional powder production process, it is often necessary to use drying and grinding equipment to dry and grind the powder respectively, which not only increases the amount of equipment and occupies a large area, but also lengthens the process flow, affecting the manufacturing efficiency of the product. Summary of the Invention

[0005] The present embodiment provides a crushing and drying apparatus that can crush and dry materials simultaneously, thereby reducing the area occupied by the apparatus and improving the production efficiency of the target material.

[0006] According to a first aspect, there is provided a crushing and drying device including a classification unit, a first housing, and a second housing connected in sequence along the direction of gravity, wherein the first housing is used for storing and crushing a material, the second housing is used for transporting an airflow to the first housing to dry the material, the classification unit is used for sieving and discharging a target material after crushing and drying, and the target material is a material having a particle size smaller than a preset threshold value.

[0007] The crushing and drying apparatus in the present embodiment can crush and dry materials simultaneously, which not only reduces the area occupied by the apparatus, but also improves the production efficiency of the target material.

[0008] In some possible embodiments, the bottom of the second housing includes a heat insulating member for insulating the heat of the airflow from diffusing downward.

[0009] In the above embodiment, a heat insulating member is installed at the bottom of the second housing, which can block the heat of the airflow from diffusing downward to a certain extent, reduce heat loss, and improve the drying effect on the materials.

[0010] In some possible configurations, an air inlet is provided in a sidewall of the second housing, and the airflow passes through the air inlet and enters the second housing.

[0011] In the above embodiment, the airflow passes through the air 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 performing a drying process on the material in the first housing.

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

[0013] In the above embodiment, the material can be dried by hot air current, which can improve the drying effect on the material.

[0014] In some possible embodiments, the grinding and drying apparatus further includes a first rotating shaft, a grinding member is installed at the bottom of the first housing, the grinding member is fixed to the first rotating shaft, and is used to grind the material under a condition in which the first rotating shaft rotates.

[0015] In the above embodiment, the crushing member is installed at the bottom of the first housing, and the crushing member can be rotated by driving the first rotating shaft, thereby crushing the material. At the same time, during the crushing process of the material, the second housing can deliver air flow to the first housing, so that the material can be crushed and dried at the same time, thereby reducing the area occupied by the crushing and drying device and improving the production efficiency of the target material.

[0016] In some possible embodiments, the grinding member includes a body, a rotor, and at least one grinding block, the rotor is installed in the center of the body and fixed to the first rotation shaft, and the at least one grinding block is installed at an end along the horizontal direction of the body.

[0017] In the above embodiment, grinding of the material can be achieved by rotating grinding blocks within the grinding member.

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

[0019] In the above embodiment, the main body is arranged in a disk shape, which helps the pulverizing member to rotate quickly and stably, thereby improving the efficiency of material pulverization.

[0020] In some possible embodiments, a stator is installed on a side wall of the first housing, and the stator is installed opposite the grinding block along the horizontal direction and has a gap therebetween.

[0021] In the above embodiment, a stator is installed on the side wall of the first housing, and the particle size after the material is crushed can be adjusted by adjusting the gap distance between the stator and the crushing block. In addition, the material can be crushed by the friction force between the stator and the crushing block against the material, which can reduce the probability that the side wall of the first housing is worn during the material crushing process, and can extend the service life of the first housing.

[0022] In some possible configurations, the dimensions of the grinding block along the extension direction of the first housing are smaller than the dimensions of the stator.

[0023] In the above embodiment, the height dimension of the grinding block is designed to be smaller than the height dimension of the stator, which can reduce wear at the side wall position of the second housing located near the stator, and is advantageous in extending the service life of the second housing.

[0024] In some possible configurations, the grinding block comprises an alloy material.

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

[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, and the classification wheel is installed at the bottom of the third housing and fixed to the second rotating shaft, and is used to sift the target material toward the outlet.

[0027] In the above embodiment, the classifying unit is equipped with a classifying wheel to select the target material, and the fineness of the material can be controlled by controlling the rotation speed of the classifying wheel, thereby improving the quality of the target material.

[0028] In some possible embodiments, the classifying unit further includes a scraper, the scraper being parallel to the direction of gravity, and one end of the scraper being fixed to a position facing the discharge outlet of the second rotation shaft.

[0029] In the above embodiment, the scraper is installed in the third housing of the classifying unit, which can solve the problem that the target material sticks to the wall and the outlet is clogged during the scraper rotation.

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

[0031] In the above embodiment, by installing a material supply unit having a preliminary crushing function, the size of the material entering the first housing can be made more uniform, thereby improving the crushing efficiency of the target material.

[0032] In some possible embodiments, the material supply unit includes a supply port, a crushing member, and a screw conveyor, which are connected in sequence along the direction of gravity, the crushing member being used to perform a pre-crushing process on the material, and the screw conveyor being used to transport the material after the pre-crushing process to the first housing.

[0033] In the above embodiment, the crushing member performs a pre-crushing process on the material, making the size of the material more uniform. This prevents the material from getting caught on equipment or parts in the subsequent processing process due to being too large. Furthermore, the screw conveyor allows the material to be transported stably and at a constant speed to the first housing, improving the stability of the target material.

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

[0035] In some possible configurations, the third axis of rotation is horizontally oriented.

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

[0037] In some possible configurations, the screw conveyor includes at least two screws arranged opposite each other along a horizontal direction.

[0038] In the above embodiment, during the process of conveying the material, at least two screws can mix, stir and crush the material, that is, the material can be further processed, and the production efficiency of the target material can be improved. [Brief description of the drawings]

[0039] In order to more clearly describe the technical solutions in the embodiments of the present application, the following briefly describes the drawings required for the embodiments of the present application, it should be understood that the drawings shown below are only some embodiments of the present application, and those skilled in the art can further obtain other drawings based on the drawings without creative efforts.

[0040] [Figure 1] 1 is a schematic structural diagram of a pulverization and drying device according to an embodiment of the present application. [Diagram 2] 1 is a schematic structural diagram of a first housing and a second housing according to an embodiment of the present application. [Diagram 3] FIG. 2 is a partial structural view of a first housing according to an embodiment of the present application. [Figure 4] FIG. 2 is a schematic structural diagram of a classification unit according to an embodiment of the present application. [Diagram 5] FIG. 2 is a schematic structural diagram of a material supply unit according to an embodiment of the present application. [Figure 6] FIG. 2 is a schematic structural diagram of another crushing and drying apparatus according to an embodiment of the present application. [Figure 7] 1 is a schematic structural diagram of a screw conveyor according to an embodiment of the present application.

[0041] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0042] The 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 examples and the drawings are used to exemplarily explain 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 described examples.

[0043] In the description of this application, unless otherwise stated, "multiple" means two or more, and the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", and "outer" is merely for facilitating and simplifying the description of this application, and does not indicate or imply that the subject device or element has a particular orientation, is configured and should be operated in a particular orientation, and therefore should not be understood as limiting this application. Furthermore, terms such as "first", "second", and "third" are used for explanatory purposes only, and should not be understood as indicating or implying relative importance. "Perpendicular" is not strictly perpendicular, but is within a margin of error. "Parallel" is not strictly parallel, but is within a margin of error.

[0044] Any directional expressions appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the present application. It should be further explained in the description of the present application that, unless otherwise clearly specified and limited, the terms "attached", "connected" and "connection" should be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrally connected. They may be directly connected, or indirectly connected through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0045] The term "and / or" in this application merely describes the relationship between related objects, and indicates that three types of relationships can exist. For example, A and / or B can indicate three situations: A exists alone, A and B exist simultaneously, and B exists alone. In this application, the symbol " / " generally indicates that the related objects before and after it are in an "or" relationship.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the art. The terms used in this application are merely for the purpose of describing specific embodiments and are not intended to limit the present application. The terms "include" and "have" and their equivalents in the description of the present application and claims and the above drawings are intended to be non-exclusive. The terms "first", "second", etc. in the description of the present application and claims or the above drawings are used to distinguish different objects and are not used to describe a specific order or subordinate relationship.

[0047] Reference to an "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearances of the term "embodiment" in various places in this specification do not necessarily refer to the same embodiment, nor do they refer to embodiments that are mutually exclusive, independent, or alternative to other embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described herein can be combined with other embodiments.

[0048] Although the present application has been described with reference to the preferred embodiments, various modifications can be made and the elements can be replaced with equivalents without departing from the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural contradiction. The present application is not limited to the specific embodiments disclosed in this specification, but includes all technical solutions included in the claims.

[0049] Currently, in the manufacturing process of functional materials such as positive and negative active materials for batteries, the raw materials need to be pulverized, dried, etc., to achieve powderization of the materials. However, in the current powderization process, the raw materials generally need to be processed separately in equipment such as a pulverizer and a dryer, which not only occupies a large space in the equipment, but also affects the manufacturing efficiency of the materials.

[0050] In view of this, an embodiment of the present application 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 production efficiency of functional materials.

[0051] 1 is a structural schematic diagram of a crushing and drying apparatus 200 according to an embodiment of the present application. As shown in FIG 1, the crushing and drying apparatus 200 can include a classification unit 210, a first housing 220, and a second housing 230, which are connected in sequence along the gravity direction.

[0052] The first housing 220 can be used to contain and crush the material. The second housing 230 can be used to deliver airflow to the first housing 220 to dry the material. 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 value.

[0053] Alternatively, 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 may be connected by welding, adhesives, or other methods, and the present application is not limited thereto.

[0054] Specifically, a first supply port 221 may be installed on the top wall or side wall of the first housing 220, and the material can be fed into the first housing 220 through the first supply port 221. The inside of the first housing 220 may include a member for crushing the material, for example, but not limited to, a plurality of rotatable blades may be installed on the inner wall of the first housing 220 to crush the material when rotating. Optionally, a plurality of vent holes may be installed on the wall where the first housing 220 and the second housing 230 face each other, and the airflow of the second housing 230 can move upward and dry the material in the first housing 220 through the plurality of vent holes. A plurality of meshes may be installed on the opposing walls between the classification unit 210 and the first housing 220, and the size of the meshes may be set according to the particle size requirements of the target material, for example, slightly larger than a preset threshold value. The crushed and dried materials in the first housing 220 move upward under the action of the upward airflow, and materials with particle sizes smaller than the mesh pass through the mesh, while materials with particle sizes larger than the mesh fall, and continue to be crushed and dried until the particle size requirement is met. The classification unit 210 may include an outlet 211, and the target material that meets the particle size requirement is sieved through the mesh and then discharged from the outlet 211. Optionally, a negative pressure fan may be further installed on the outlet side of the outlet 211, which works in conjunction with the internal airflow to suck out the target material whose particle size is smaller than a preset threshold.

[0055] In the embodiment of the present application, the crushing and drying apparatus 200 can crush and dry the material simultaneously, which not only reduces the occupation area of ​​the apparatus, but also improves the production efficiency of the target material.

[0056] In addition, the grinding and drying apparatus 200 provided in the embodiment of the present application can be used not only in the production of the above-mentioned active materials, but also in other situations, including, but not limited to, the production processes of powdered or granular materials in industries such as chemical industry, pharmaceutical industry, and food industry.

[0057] Optionally, as shown in FIG. 1, the crushing and drying apparatus may further include a base 201 for supporting the classifying unit 210, the first housing 220 and the second housing 230.

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

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

[0060] Alternatively, the heat insulating member 231 may be detachably connected to the second housing 230, for example by being directly installed on the bottom of the second housing 230, which allows easy replacement of the heat insulating member 231. Of course, the heat insulating member 231 may be fixedly connected to the bottom wall of the second housing 220, for example by being adhered thereto, and the present application is not limited thereto.

[0061] Alternatively, the heat insulating member 231 may be made of a heat-insulating material and have the effect of heat insulation. For example, the heat insulating member 231 may be a light carbonaceous material, which is light in weight and can reduce the overall weight of the pulverizer / dryer 200, and is relatively low in cost due to the use of the carbonaceous material for the heat insulating member 231, but is not limited thereto.

[0062] Optionally, other members such as a support member may be installed under the second housing 230, and a heat insulating member 231 may 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 heat of the airflow from diffusing downward to a certain extent, reduce heat loss, and improve the drying effect on the material.

[0064] 1, an air intake 232 may be provided on a side wall of the second housing 230, and airflow passes through the air intake 232 and enters the second housing 230. The direction of the airflow may refer to the direction of the arrow in FIG.

[0065] Specifically, when the airflow enters the second housing 230 through the air intake 232, the insulating member 231 at the bottom of the second housing 230 can generate an insulating and negative pressure effect on the airflow and its heat, and the airflow is discharged only upward, thereby performing a drying process on the material in the first housing 220.

[0066] Optionally, the first housing 220 may be a hollow structure, i.e., the first housing 220 may not have a bottom wall, so that the airflow of the second housing 230 can be conveyed to the first housing 220, thereby improving the drying effect of the material.

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

[0068] Optionally, the air inlet 232 may be connected to a hot air blower to provide a hot air flow to the second housing 220 for drying materials.

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

[0070] In the above embodiment, the material is dried by using hot air current, which can improve the drying effect and efficiency of the material.

[0071] FIG. 2 is a schematic structural diagram of a first housing 220 and a 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 Fig. 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 is used to grind materials when the first rotating shaft 240 rotates.

[0073] Specifically, a driving device (not shown) may be connected to the lower end of the first rotating shaft 240, and the driving device may be installed in the base 201 of the apparatus. The first rotating shaft 240 may be supported by a bearing stand 250 fitted to the outside of the first rotating shaft 240. A bearing may be included inside the bearing stand 250, and the bearing may reduce friction between the first rotating shaft 240 and the bearing stand 250, making the rotation smoother.

[0074] Furthermore, a heat insulating member 231 can be provided at the bottom of the second housing 230 to block heat from diffusing to the bearing stand 250, thereby reducing the probability that the bearing stand 250 will be damaged by heat.

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

[0076] When the first rotating shaft 240 starts to rotate, the grinding member 222 also rotates therewith, so that the grinding member 222 generates centrifugal force during the rotation process, which can sprinkle the material on the side wall of the first housing 220, and the material falls downward along the side wall of the first housing 220 between the grinding member 222 and the first housing 220, and the frictional force between the grinding member 222 and the material during the rotation process of the grinding member 222 can crush and grind the material, so that the particle size of the material meets the requirement.

[0077] Optionally, as shown in FIG. 2, the crushing member 222 and the first rotating shaft 240 may be removably connected, such as by a bolt connection.

[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 materials under the action of the first rotating shaft 240.

[0079] 2 and 3, the grinding member 222 may include a body 2221, a rotor 2222, and at least one grinding block 2223. The rotor 2222 may be installed in the center of the body 2221 and fixed to the first rotating shaft 240. The at least one rotor 2222 may be installed at an end of the body 2221 along the horizontal direction.

[0080] Specifically, the rotor 2222 is fixed to the first rotating shaft 240, and when the driving 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 begin to rotate around the first rotating shaft 240, and when material enters the first housing 220, the shear force of the crushing block 2223 on the material and the friction force between the materials can perform a crushing process on the material.

[0081] 3, the main body 2221 may be a hollow cylinder, and the hollow portion is used to pass the first rotating shaft 240. The rotor 2222 may also be a hollow cylinder whose inner diameter is the same as the inner diameter of the main body 2221, and is fixedly connected to the main body 2221.

[0082] Alternatively, the rotor 2222 may be integrally molded with the body 2221 or may be two separate pieces.

[0083] 3, the grinding block 2223 and the body 2221 may be removably connected, or may be connected to the body 2221 by a bolt connection or the like. Of course, the grinding block 2223 may be fixedly connected to the body 2221 by other methods, such as welding or integral molding, and the present application is not limited thereto.

[0084] Alternatively, the grinding blocks 2223 may be multiple, and the multiple grinding blocks 2223 may be uniformly disposed on the upper surface of the body 2221 along the circumferential direction of the body 2221 .

[0085] Specifically, one crushing block 2223 may be installed at every certain preset distance along the circumferential direction of the main body 2221, and the outer shapes and dimensions of the multiple crushing blocks 2223 may be the same, so that the crushing member 222 can have high stability when in a rotating state.

[0086] In the present embodiment, the grinding of the material can be achieved by a rotating grinding block 2223 within the grinding member 222 .

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

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

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

[0090] In some embodiments, as shown in FIG. 3, a stator 223 is installed on the side wall of the first housing 220, and the stator 223 is installed opposite the grinding block 2223 along the horizontal direction and has 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 may be installed facing the outer periphery of the grinding block 2223. There is a gap t between the stator 223 and the grinding 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 driving device drives the first rotating shaft 240 to rotate, the crushing member 222 also rotates accordingly, and after the material is placed in the first housing 220, centrifugal force is generated in the crushing member 222 during the rotation process, so that the material can be sprinkled on 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, and during the rotation process of the crushing member 222, the material can be crushed and polished due to the shear force of the crushing block 2223 against the material, the frictional force between the stator 223 and the material, and the frictional force between the materials.

[0093] Alternatively, the size of the gap t between the stator 223 and the grinding block 2223 may be adjusted by increasing or decreasing the thickness of the stator 223, and of course, the size of the gap t may also be adjusted by increasing or decreasing the diameter of the grinding member 222, and the present application is not limited thereto.

[0094] Optionally, the outer surface of the stator 223 may be rough, for example, burrs may be provided on the outer surface of the stator 223, which can better break down the material and improve the efficiency of breaking down the material.

[0095] In the embodiment of the present application, the stator 223 is installed on the side wall of the first housing 220, and the particle size after the material is crushed can be adjusted by adjusting the gap distance between the stator 223 and the crushing block 2223. In addition, the material can be crushed by the frictional force of the stator 223 and the crushing block 2223 against the material, which can reduce the probability that the side wall of the first housing 220 is worn in the process of crushing the material, and can extend the service life of the first housing 220.

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

[0097] Specifically, the extension direction of the first housing 220 can be understood to be the height direction of the first housing 220. Along the extension direction of the first housing 220, the 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, the dimension H2 of the stator 223 is the height dimension of the stator.

[0098] According to an embodiment of the present application, the height dimension of the grinding block 2223 is designed to be smaller than the height dimension of the stator 223, thereby reducing wear at the side wall position of the second housing 220 located near the stator 223, which is advantageous in extending the service life of the second housing 220.

[0099] In some embodiments, the grinding block 2223 comprises an alloy material.

[0100] An alloy material is another type of metallic material produced after fusing two or more metals together through special forging techniques, and its hardness is generally greater than that of any of the metals in its composition.

[0101] Specifically, the grinding block 2223 can be inlaid with alloy material to increase the hardness. By way of example, the alloy material can be, but is not limited to, iron alloy, aluminum alloy, titanium alloy, etc.

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

[0103] 4, the classifying unit 210 may include a second rotating shaft 212, a third housing 213, and a classifying wheel 214. A discharge port 211 is installed on the side wall of the third housing 213. The classifying wheel 214 is installed at the bottom of the third housing 213 and fixed to the second rotating shaft 212, and is used to sift the target material toward the discharge port 211.

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

[0105] Specifically, the material that has been crushed and dried moves upward under the action of the airflow, and at the same time, the classifying wheel 214 begins to rotate, generating a swirling airflow that flows downward outward. The material that rises with the airflow is affected by the swirling airflow, and the larger material particles fall downward along the inner wall of the classifying wheel 214, and are crushed and dried again until the particles form small materials, while the smaller material particles (target material) pass through the gaps between the blades of the classifying wheel 214, enter the third housing 213, and are discharged through the discharge port 211.

[0106] It should be noted that when other parameters are not changed, such as the spacing of the blades of the classifying wheel 214, the rotation speed of the classifying wheel 214 can be increased to improve the fineness of the material, otherwise the fineness of the material will decrease. The classifying wheel 214 can have a precise particle size cutoff point, and according to different requirements for the required material particle size, the rotation speed of the classifying wheel 214 can be adjusted within a certain range.

[0107] Optionally, as shown in FIG. 4, the classifying wheel 214 and the second rotating shaft 212 may be removably connected by a bolt connection.

[0108] In the embodiment of the present application, a classifying wheel 214 is installed in the classifying unit 210 to select the target material, and the fineness of the material can be controlled by controlling the rotation speed of the classifying wheel 214, thereby improving the quality of the target material.

[0109] In some embodiments, as shown in FIG. 4 , the classification unit 210 further includes a scraper 217, which is parallel to the direction of gravity, and one end of the scraper 217 is fixed at a position facing the discharge port 211 of the second rotating shaft 212.

[0110] Alternatively, the scraper 217 may be a metallic or plastic material.

[0111] As can be seen, the target material sieved by the classifying wheel 214 may stick to the wall of the third housing 213 under the action of air flow 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 is rotated by the driving of the motor 215, and the scraper 217 also rotates accordingly, scraping off the target material on the side wall of the third housing 213 at this time, thereby solving the problem of the target material sticking to the wall. Also, when one end of the scraper 217 is fixed to a position facing the discharge port 211, the second rotating shaft 212 is rotated by the driving of the motor 215, and the scraper 217 also rotates accordingly, scraping off the target material accumulated in the discharge port 211, thereby solving the problem of the discharge port 211 being clogged.

[0112] Optionally, the third housing 213 may be cylindrical and the horizontal dimension of the scraper 217 may be slightly smaller than the radial dimension of the third housing 213, thereby allowing the scraper 217 to rotate within the third housing 213 and scrape material off the inner wall of the third housing 213.

[0113] Optionally, 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 flexibility, the rubber strip can reduce wear on the sidewall of the third housing 213 caused 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, a scraper is installed in the third housing 213 of the classification unit 210, which can solve the problem of the target material sticking to the wall and clogging the outlet 211 during the rotation of the scraper 217.

[0115] In some embodiments, the crushing and drying apparatus 200 further includes a material supplying unit 260. As shown in Figures 5 and 6, the material supplying unit 260 may be connected to a side wall of the first housing 220 and is used to pre-crush the material and 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 is connected to a first supply port 221 on the side wall of the first housing 220 .

[0117] Alternatively, 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 application is not limited thereto.

[0118] Specifically, the material supply unit 260 may include a component for performing a pre-grinding process on the material, i.e., performing a coarse grinding process, and then transporting the pre-grinded material to the first housing for a fine grinding process.

[0119] This allows the size of the material entering the first housing 220 to be more uniform, improving the efficiency of the crushing process.

[0120] 5, the material supply unit 260 may include a second supply port 261, a crushing member 262, and a screw conveyor 263, which are connected in sequence along the gravity direction. The crushing member 262 may be used for pre-crushing the material. The screw conveyor 263 may be used for transporting the material after pre-crushing to the first housing 220.

[0121] Alternatively, the second supply port 261, the collapsing member 262 and the screw conveyor 263 may be connected detachably or fixedly, and the present application is not limited thereto.

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

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

[0124] Optionally, as shown in FIG. 5, the screw conveyor 263 may be a single screw conveyor.

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

[0126] In the above embodiment, the crushing member 262 performs a pre-crushing process on the material, making the size of the material more uniform. In the subsequent processing steps, the material is not caught on the equipment or parts due to being too large. Furthermore, the screw conveyor 263 can transport the material to the first housing 220 stably and at a constant speed, improving the stability of the target material.

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

[0128] Specifically, one crushing pillar 2622 may be installed at every fixed preset distance along the circumferential direction of the third rotating shaft 2621, and one crushing pillar 2622 may be installed at every fixed preset distance along the circumferential direction of the third rotating shaft 2621, and the multiple crushing pillars 2622 may have the same outer shape and dimensions.

[0129] Specifically, a motor may be connected to one end of the third rotating shaft 2621, and the motor drives the rotation of the third rotating shaft 2621. During the process of the rotation of the third rotating shaft 2621, the multiple crushing columns 2622 perform a preliminary crushing process on the material.

[0130] Alternatively, the third rotating shaft 2621 may share one motor with the screw conveyor 263, and the motor may be installed at the same end of the third rotating shaft 2621 and the screw conveyor 263. This allows the number of driving devices in the pulverizing and drying apparatus 200 to be reduced.

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

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

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

[0134] Specifically, when the material enters the screw conveyor 263, the at least two screws 2631 start to rotate under the driving of the motor. It should be noted that the rotation directions of two adjacent screws 2631 may be different, thereby reducing the risk of the material sticking to the screws 2631. In the process of material conveyance, the at least two screws 2631 can mix, stir and crush the material, that is, the material can be further processed, improving the production efficiency of the material. In addition, the screw conveyor 263 including at least two screws 2631 is suitable for materials with large volume, high humidity or requiring stirring.

[0135] Optionally, as shown in FIG. 7, the screw conveyor 263 may include two screws, ie, the screw conveyor 263 may be a double screw conveyor.

[0136] Optionally, the size and dimensions of the at least two screws of the screw conveyor 263 may be the same or different, and the present application is not limited in this regard.

[0137] Alternatively, as shown in FIG. 7, when at least two screws 2631 are installed opposite each other along the horizontal direction, 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 screw 2631 and the motor may be connected to each other through a transmission belt via a pulley. This can reduce the number of driving devices in the pulverization and drying apparatus 200.

[0138] Although the present application has been described with reference to the preferred embodiments, various modifications can be made and the elements can be replaced with equivalents without departing from the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural contradiction. The present application is not limited to the specific embodiments disclosed in this specification, but includes all technical solutions included in the claims. [Explanation of symbols]

[0139] 200 Crushing and drying equipment 210 Classification Unit 220 1st cabinet 230 2nd cabinet 240 First Rotation Axis 241 Driven Wheel 250 Bearing stand 260 Material Supply Unit 201 Base 221 1st supply port 222 Crushing material 223 Stator 2221 Main unit 2222 Rotor 2223 Crushed Block 211 Outlet 212 Second Rotation Axis 213 3rd cabinet 214 Classification Wheel 215 Motor 216 Coupling 217 Scraper 261 2nd supply port 262 Breaking member 263 Screw Conveyor 2621 3rd rotation axis 2622 Crushed Pillar 2631 Screw

Claims

1. The apparatus includes a classification unit (210), a first housing (220), and a second housing (230) connected in order along the direction of gravity, The first housing (220) is used to contain and crush materials; 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 sift 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 value, characterized in that the crushing and drying apparatus.

2. The crushing and drying apparatus according to claim 1, wherein the bottom of the second housing (230) includes a heat insulating member (231) for insulating the heat of the airflow from diffusing downward.

3. An air intake port (232) is provided on a side wall of the second housing (230); The crushing and drying apparatus according to claim 1 or 2, characterized in that the air flow passes through the air inlet (232) and enters the second housing (230).

4. The crushing and drying apparatus according to any one of claims 1 to 3, characterized in that the air current is a hot air current.

5. Further comprising a first rotating shaft (240); The crushing and drying device according to any one of claims 1 to 4, characterized in that a crushing member (222) is installed at the bottom of the first housing (220), the crushing member is fixed to the first rotating shaft (240), and is used to crush the material while the first rotating shaft (240) is rotating.

6. The grinding member (222) includes a body (2221), a rotor (2222), and at least one grinding block (2223), The rotor (2222) is installed in the center of the body (2221) and fixed to the first rotating shaft (240); The crushing and drying apparatus according to claim 5, characterized in that the at least one crushing block (2223) is installed at an end portion along a horizontal direction of the main body (2221).

7. The crushing and drying apparatus according to claim 6, characterized in that the main body (2221) is disk-shaped.

8. A stator (223) is installed on a side wall of the first housing (220), The crushing and drying apparatus according to claim 6 or 7, characterized in that the stator (223) is disposed opposite the crushing block (2223) along the horizontal direction and has a gap therebetween.

9. The crushing and drying apparatus according to claim 8, characterized in that, along the extension direction of the first housing (220), the dimension of the crushing block (2223) is smaller than the dimension of the stator (223).

10. The crushing and drying apparatus according to any one of claims 6 to 9, characterized in that the crushing block (2223) contains an alloy material.

11. The classification unit (210) includes a second rotating shaft (212), a third housing (213), and a classification wheel (214), An exhaust port (211) is provided on a side wall of the third housing (213), The crushing and drying apparatus according to any one of claims 1 to 10, characterized in that the classifying wheel (214) is installed at the bottom of the third housing (213) and fixed to the second rotating shaft (212) and used to sift the target material toward the discharge outlet (211).

12. The classification unit (210) further includes a scraper (217), The crushing and drying apparatus according to claim 11, characterized in that the scraper (217) is parallel to the direction of gravity, and one end of the scraper (217) is fixed at a position facing the discharge port (211) of the second rotating shaft (212).

13. The crushing and drying apparatus according to any one of claims 1 to 12, further comprising a material supplying unit (260) connected to a side wall of the first housing (220) and used for pre-crushing the material and transporting the material to the first housing (220).

14. The material supply unit (260) includes a second supply port (261), a breaking member (262), and a screw conveyor (263), which are connected in sequence along the gravity direction, The crushing member (262) is used for preliminary crushing treatment of the material, The crushing and drying apparatus according to claim 13, characterized in that the screw conveyor (263) is used to transport the material after the preliminary crushing process to the first housing (220).

15. The crushing and drying apparatus according to claim 14, characterized in that the crushing member (262) includes a third rotating shaft (2621) and a plurality of crushing posts (2622) installed on the third rotating shaft (2621).

16. The crushing and drying apparatus according to claim 15, wherein the third rotating shaft (2621) is installed horizontally.

17. The crushing and drying apparatus according to any one of claims 14 to 16, characterized in that the screw conveyor (263) includes at least two screws (2631) arranged opposite each other along a horizontal direction.

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