Material crushing device and battery production system

Abstract

The utility model provides a material smashing device and a battery production system.The material smashing device comprises a material smashing device, a sorting assembly and a collecting assembly, the material smashing device comprises a material smashing cavity, a feeding assembly and an air injection assembly, and the feeding assembly communicating with the material smashing cavity is used for conveying to-be-smashed materials into the material smashing cavity; a nozzle in the air injection assembly is used for injecting air flow into the material crushing cavity, a grading wheel of the sorting assembly can sort the crushed materials according to the particle size, and the collecting assembly communicating with the sorting cavity is used for collecting the materials sorted by the grading wheel. According to the structure, the airflow sprayed into the material crushing cavity by the nozzle can drive the to-be-crushed materials in the material crushing cavity to collide or rub each other to be crushed, so that the to-be-crushed materials can be well crushed, and the crushed materials are sorted by the sorting assembly according to the particle size and then are collected and utilized; and the particle size of the obtained material is uniform, so that the material prepared by the material crushing device has good quality.

Description

Technical Field

[0001] The present application relates to the field of battery production technology, and in particular to a material crushing device and a battery production system. Background Art

[0002] Batteries have the advantages of high specific energy and high power density. They are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric airplanes, electric ships, and electric tools.

[0003] As people's requirements for battery quality become increasingly higher, people's requirements for the quality of materials used in the battery production process are also increasingly higher. How to improve the quality of the materials used is becoming more and more of a concern to those skilled in the art. Utility Model Content

[0004] In view of the above problems, the present application provides a material crushing device and a battery production system, wherein the material crushing device is conducive to improving the quality of the prepared material.

[0005] In the first aspect, some embodiments of the present application provide a material crushing device, which includes a crusher, a sorting component and a collecting component. The crusher includes a crushing chamber, a feeding component and an injection component. The feeding component is connected to the crushing chamber, and the feeding component is used to transport the material to be crushed into the crushing chamber. The injection component includes a nozzle, and the nozzle is used to spray air flow into the crushing chamber; the sorting component includes a sorting chamber and a grading wheel arranged in the sorting chamber, the sorting chamber is connected to the crushing chamber, and the grading wheel is used to sort the crushed material according to particle size; the collecting component is connected to the sorting chamber, and the collecting component is used to collect the material sorted by the grading wheel.

[0006] In the above structure, the airflow ejected from the nozzle into the crushing chamber can drive the materials to be crushed in the crushing chamber to collide or rub against each other and be crushed, so that the materials to be crushed can be well crushed, and the crushed materials are sorted by the sorting component according to the particle size and then collected and utilized, so that the particle size of the obtained materials is relatively uniform, and the materials prepared by the material crushing device have better quality.

[0007] According to the material crushing device provided in some embodiments of the present application, a plurality of nozzles are provided, and the jet assembly also includes a distribution pipeline. The plurality of nozzles are connected to the distribution pipeline and are arranged at intervals along the distribution pipeline, so that the material to be crushed in the crushing chamber can be evenly affected by the airflow ejected from the plurality of nozzles, so that the material can be better crushed.

[0008] In the material pulverizing device provided in some embodiments of the present application, the distribution pipeline is arranged along the circumference of the wall of the crushing chamber and around the outer periphery of the crushing chamber outlet. The blowing ports of the multiple nozzles are all directed toward the crushing chamber outlet. By aligning the blowing ports of the multiple nozzles toward the crushing chamber outlet, the material in the crushing chamber is exposed to the airflow ejected by the multiple nozzles during discharge from the crushing chamber through the outlet, reducing the possibility of the material being discharged directly without being affected by the airflow ejected by the nozzles, thereby improving the material pulverization effect.

[0009] According to the material crushing device provided in some embodiments of the present application, the flow rate of the air flow ejected from the nozzle is V, 50m / s≤V≤400m / s. This not only enables the air flow ejected from the nozzle to drive the particles of the material to be crushed to obtain sufficient kinetic energy, so that the particles of the material to be crushed have a good crushing effect after colliding or rubbing against each other, but also helps to reduce the energy waste caused by the formation of a higher flow rate of air flow.

[0010] According to the material crushing device provided in some embodiments of the present application, the outlet of the crushing chamber is connected to the bottom end of the sorting chamber, the top end of the sorting chamber is connected to the collection assembly, and the grading wheel is located between the top and bottom ends of the sorting chamber. Through this arrangement, the material trapped in the sorting chamber can fall from the outlet of the crushing chamber into the crushing chamber again under the action of gravity and be crushed again, and this process is repeated until the crushed material meets the particle size requirements, passes through the grading wheel, and can enter the collection assembly for collection, so that the material collected by the collection assembly is material that has been sorted by the grading wheel and meets the particle size requirements.

[0011] According to the material crushing device provided in some embodiments of the present application, the feeding component includes a connected material conveying pipeline and a positive pressure blowing pipeline. The material conveying pipeline and the positive pressure blowing pipeline intersect at an acute angle and are connected to the inlet of the crushing chamber, so that the material to be crushed conveyed by the material conveying pipeline can be smoothly blown into the crushing chamber by the airflow in the positive pressure blowing pipeline, which is beneficial to reduce the possibility of blockage of the material to be crushed.

[0012] According to the material crushing device provided in some embodiments of the present application, the collection component includes a collector, the inlet of which is connected to the sorting chamber, so that the material coming out of the sorting chamber can enter the collector for collection, making the subsequent transportation and storage of the material more convenient.

[0013] According to the material crushing device provided in some embodiments of the present application, the collection component also includes a dust collector, the collector includes a cyclone separator and a collection bin, the feed port of the cyclone separator is connected to the sorting chamber, the exhaust port of the cyclone separator is connected to the dust collector, and the collection bin is connected to the discharge port of the cyclone separator.

[0014] According to the material crushing device provided in some embodiments of the present application, the material crushing device also includes an induced draft fan, which is connected to the collecting component, so that the airflow in the material crushing device has a higher flow rate, thereby improving the efficiency of material transportation in the material crushing device.

[0015] In a second aspect, some embodiments of the present application further provide a battery production system, which includes a material crushing device provided by any of the aforementioned technical solutions, and the material crushing device is used to crush the material to be crushed.

[0016] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0017] The present application provides a material crushing device, which includes a crusher, a sorting component and a collecting component. The crusher includes a crushing chamber, a feeding component and an air jet component. The feeding component connected to the crushing chamber is used to convey the material to be crushed into the crushing chamber. The nozzle in the air jet component is used to spray air into the crushing chamber. The sorting chamber of the sorting component is provided with a grading wheel to sort the crushed material according to the particle size. The collecting component connected to the sorting chamber is used to collect the material sorted by the grading wheel. In the above structure, since the air flow sprayed from the nozzle into the crushing chamber can drive the material to be crushed in the crushing chamber to collide or rub against each other and crush, the material to be crushed can be well crushed, and the crushed material is sorted by the sorting component according to the particle size and then collected and utilized, so that the particle size of the obtained material is relatively uniform, so that the material prepared by the material crushing device has better quality.

[0018] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. Throughout the accompanying drawings, the same reference numerals are used to denote the same components.

[0020] Figure 1 A schematic diagram of the structure of a material crushing device provided in some embodiments of the present application;

[0021] Figure 2 A schematic structural diagram of a crusher from one perspective in a material crushing device provided in some embodiments of the present application;

[0022] Figure 3A schematic structural diagram of a crusher from another perspective in a material crushing device provided in some embodiments of the present application;

[0023] Figure 4 This is a schematic diagram of the airflow direction in the crusher of the material crushing device provided in some embodiments of the present application.

[0024] In the attached figure:

[0025] 1. Crushers; 11. Crush chamber; 12. Feed assembly; 121. Material conveying pipeline; 122. Positive pressure air blowing pipeline; 13. Jet assembly; 131. Distribution pipeline; 132. Air pipeline; 133. Nozzle; 2. Sorting chamber; 3. Classifying wheel; 4. Drive; 5. Collector; 51. Cyclone separator; 52. Collection bin; 6. Dust collector; 7. Induced draft fan. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0028] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0029] In addition, the technical terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0030] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0031] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] Currently, judging by market developments, batteries are increasingly being used. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace.

[0033] The production of battery active materials typically requires a powdered form for subsequent processing. Currently, such materials are typically obtained by drying active material solutions. However, due to the small particle size of the resulting powder, softly connected agglomerates easily form between the powder particles, requiring subsequent pulverization.

[0034] In the existing technology, the crushing effect of the agglomerated material to be crushed is not good, the particles of the agglomerated material are usually not completely deagglomerated, the shape of the crushed material particles is irregular, the particle size distribution range of the obtained material is wide, and the consistency of the material is poor, which seriously restricts the improvement of the material quality.

[0035] In order to improve the quality of the prepared material, the present application provides a material crushing device, which includes a crusher, a sorting component and a collecting component. The crusher includes a crushing chamber, a feeding component and an air jet component. The feeding component connected to the crushing chamber is used to transport the material to be crushed into the crushing chamber. The nozzle in the air jet component is used to spray air into the crushing chamber. The sorting chamber of the sorting component is provided with a grading wheel and is connected to the crushing chamber. The collecting component connected to the sorting chamber is used to collect the material sorted by the grading wheel. In the above structure, since the air flow sprayed into the crushing chamber by the nozzle can drive the material to be crushed in the crushing chamber to collide or rub against each other and crush, the material to be crushed can be well crushed, and the crushed material is sorted by the sorting component and then collected and utilized, so that the particle size of the obtained material is relatively uniform, so that the material prepared by the material crushing device has better quality.

[0036] The material crushing device disclosed in the embodiment of the present application can be used, but is not limited to, for preparing powder of active material, and can also be used for crushing intermediates such as fuel, soap powder and inorganic salt, and can also be used for crushing other materials to be crushed, thereby obtaining materials of better quality.

[0037] Some embodiments of the present application provide a material crushing device, referring to Figure 1 The material crushing device includes a crusher 1, including a crushing chamber 11, a feeding component 12 and an air jet component 13. The feeding component 12 is connected to the crushing chamber 11 and is used to transport the material to be crushed into the crushing chamber 11. The air jet component 13 includes a nozzle 133, and the nozzle 133 is used to spray air into the crushing chamber 11; the sorting component includes a sorting chamber 2 and a classifying wheel 3 arranged in the sorting chamber 2, the sorting chamber 2 is connected to the crushing chamber 11, and the classifying wheel is used to sort the crushed material according to particle size; the collecting component is connected to the sorting chamber 2, and the collecting component is used to collect the material sorted by the classifying wheel 3.

[0038] The crusher 1 can be a device for crushing materials to be crushed. The crushing chamber 11 can be a chamber for crushing the materials to be crushed, and is formed inside the crusher 1. For example, the crushing chamber 11 can be a cavity structure having an inlet and an outlet. Materials can enter the cavity structure through the inlet and exit the cavity structure through the outlet after being crushed.

[0039] The feed assembly 12 may be a component for conveying the material to be crushed into the crushing chamber 11, and it can smoothly convey the material to be crushed into the crushing chamber 11 for crushing. For example, the feed assembly 12 may include a pneumatic conveying pipeline system, so that the material to be crushed can smoothly enter the crushing chamber 11 under the action of airflow; the feed assembly 12 may also include a screw conveyor, so that the material to be crushed can smoothly enter the crushing chamber 11 under the action of the screw conveyor.

[0040] The jet assembly 13 may be a component for injecting air into the crushing chamber 11, so that the airflow injected into the crushing chamber 11 can impact and drive the material to be crushed, so that the material to be crushed can collide with or rub against each other under the action of the airflow and be crushed. The nozzle 133 may be a device for injecting air in the jet assembly 13, which can accelerate the airflow, so that the airflow is injected into the crushing chamber 11 at a faster speed, which helps the material to be crushed to obtain greater kinetic energy, so that the particles of the material to be crushed can be better crushed after collision or friction with each other, and thus helps to improve the quality of the crushed material.

[0041] The sorting assembly can be used to sort the crushed material, improving the consistency of the particle size of the prepared material through sorting, making the particle size of the material more uniform. The sorting chamber 2 can be a cavity structure used to provide space for material sorting. By connecting the sorting chamber 2 to the crushing chamber 11, the crushed material can enter the sorting chamber 2 for sorting.

[0042] The classifying wheel 3 can be a device for sorting materials according to the particle size of the material particles, which is rotatably connected to the wall of the sorting chamber 2. For example, the sorting component can also include a driver 4, which is in transmission connection with the classifying wheel 3, and the classifying wheel 3 can rotate under the drive of the driver 4. By arranging the classifying wheel 3 in the sorting chamber 2, after the crushed material enters the sorting chamber 2, it can be separated by the strong centrifugal force generated by the high-speed rotating classifying wheel 3, so that the material moving with the air flow to the classification area is separated, and smaller particles that meet the particle size requirements can enter the collection component through the classifying wheel 3, and larger particles larger than the particle size requirements can be thrown onto the wall of the sorting chamber 2 under the action of centrifugal force and slide down, and be trapped in the sorting chamber 2.

[0043] The collecting assembly can be a component for collecting the crushed material. By connecting the collecting assembly to the sorting chamber 2, the material sorted by the classifying wheel 3 can be collected for subsequent transportation and storage.

[0044] In the above structure, the airflow ejected from the nozzle 133 into the crushing chamber 11 can drive the materials to be crushed in the crushing chamber 11 to collide or rub against each other and be crushed, so that the materials to be crushed can be well crushed, and the crushed materials are sorted by the sorting component and then collected and utilized, so that the particle size of the obtained materials is relatively uniform, and the materials prepared by the material crushing device have better quality.

[0045] In some embodiments, the nozzle 133 is provided with a plurality of Figure 2The jet assembly 13 further includes a distribution pipeline 131 , which is located in the crushing chamber 11 , and a plurality of nozzles 133 are connected to the distribution pipeline 131 and are spaced apart along the distribution pipeline 131 .

[0046] The distribution pipeline 131 can be a pipeline in the jet assembly 13 that is connected to the nozzle 133, which is used to deliver high-pressure gas to the nozzle 133 so that the gas can obtain a higher flow rate at the blowing port of the nozzle 133, so that the airflow has a good crushing effect.

[0047] By setting up multiple nozzles 133 connected to the distribution pipeline 131, the distribution pipeline 131 can deliver high-pressure gas to the multiple nozzles 133, so that the material to be crushed in the crushing chamber can be affected by the airflow ejected by the multiple nozzles 133, so that the material can be better crushed.

[0048] The multiple nozzles 133 are connected to the distribution pipeline 131 and are arranged at intervals along the distribution pipeline 131, which may mean that the multiple nozzles 133 are arranged at equal intervals along the extension direction of the distribution pipeline 131, so that the multiple nozzles 133 can crush the material to be crushed in the crushing chamber 11 more evenly.

[0049] In some embodiments, reference Figures 2 to 4 The jet assembly 13 also includes a gas delivery pipeline 132, which connects a high-pressure gas source such as an air compressor with the distribution pipeline 131, so that the distribution pipeline 131 can obtain high-pressure gas.

[0050] In some embodiments, the distribution pipeline 131 is arranged along the circumference of the wall of the crushing chamber 11 and around the outer periphery of the outlet of the crushing chamber 11 , and the blowing ports of the plurality of nozzles 133 are all directed toward the outlet of the crushing chamber 11 .

[0051] The crushing chamber 11 can be set as a cylindrical cavity structure, and the distribution pipeline 131 is set along the circumference of the wall of the crushing chamber 11. It can be that the distribution pipeline 131 is located in the crushing chamber 11 and is connected to the inner circumferential surface of the wall of the crushing chamber 11 along the circumference of the crushing chamber 11, so that the distribution pipeline 131 can be protected by the wall of the crusher 1, reducing the possibility of the distribution pipeline 131 being damaged by collision; it can also be that the distribution pipeline 131 is located outside the crushing chamber 11 and is connected to the outer circumferential surface of the wall of the crushing chamber 11 along the circumference of the crushing chamber 11, and the blowing port of the nozzle 133 extends into the crushing chamber 11 to spray air into the crushing chamber 11, so that the distribution pipeline 131 can be conveniently maintained by being set outside the crushing chamber 11.

[0052] By surrounding the distribution pipeline 131 around the outer periphery of the outlet of the crushing chamber 11, the multiple nozzles 133 arranged along the distribution pipeline surround the outer periphery of the crushing chamber 11. By making the blowing ports of the multiple nozzles 133 all face the outlet of the crushing chamber 11, the material in the crushing chamber 11 can be affected by the airflow sprayed by the multiple nozzles 133 during the process of being discharged from the crushing chamber 11 from the outlet, reducing the possibility of the material being directly discharged without being affected by the airflow sprayed by the nozzles 133, which is beneficial to improving the crushing effect of the material.

[0053] Exemplarily, the crushing chamber 11 is configured as a cylindrical cavity structure, the outlet of the crushing chamber 11 is configured on the central axis of the crushing chamber 11, the distribution pipeline 131 is connected to the inner wall surface of the crushing chamber 11 along the circumference of the crushing chamber 11, and the blowing ports of multiple nozzles 133 are all configured toward the outlet located at the central axis of the crushing chamber 11, so that the material discharged from the outlet of the crushing chamber 11 is all affected by the airflow ejected by the nozzle 133.

[0054] In some embodiments, the velocity of the airflow ejected by the nozzle 133 is V, 50 m / s≤V≤400 m / s.

[0055] By setting the flow velocity V of the airflow ejected from the nozzle 133 to a range of 50m / s≤V≤400m / s, not only can the airflow ejected from the nozzle 133 drive the particles of the material to be crushed to obtain sufficient kinetic energy, so that the particles of the material to be crushed have a good crushing effect after colliding or rubbing against each other, but it is also beneficial to reduce the energy waste caused by the formation of a higher flow rate of airflow.

[0056] The flow velocity V of the airflow ejected from the nozzle 133 can be set within a range of 60 m / s ≤ V ≤ 100 m / s. For example, the flow velocity V of the airflow ejected from the nozzle 133 can be 70 m / s, 80 m / s, or 90 m / s. This not only enables the airflow ejected from the nozzle 133 to drive the particles of the material to be crushed to obtain sufficient kinetic energy, thereby achieving a good crushing effect after the particles of the material to be crushed collide or rub against each other, but also helps to reduce energy waste caused by forming a high flow rate of airflow.

[0057] In some embodiments, the outlet of the crushing chamber 11 is connected to the bottom end of the sorting chamber 2 , the top end of the sorting chamber 2 is connected to the collecting assembly, and the grading wheel 3 is located between the top and bottom ends of the sorting chamber 2 .

[0058] By connecting the outlet of the crushing chamber 11 to the bottom end of the sorting chamber 2, the material trapped in the sorting chamber 2 can fall from the outlet of the crushing chamber 11 into the crushing chamber 11 again under the action of gravity to be crushed again.

[0059] By connecting the top of the sorting chamber 2 to the collecting assembly, the classifying wheel 3 is located between the top and bottom of the sorting chamber 2, so that the crushed material that meets the particle size requirements can enter the collecting assembly from the top of the sorting chamber 2 for collection after passing through the classifying wheel 3.

[0060] Through the above arrangement, the material trapped in the sorting chamber 2 can fall into the crushing chamber 11 again from the outlet of the crushing chamber 11 under the action of gravity and be crushed again, and so on and so forth until the crushed material meets the particle size requirements and passes through the classifying wheel 3 and can enter the collecting assembly for collection, so that the material collected by the collecting assembly is the material that has been sorted by the classifying wheel 3 and meets the particle size requirements.

[0061] In some embodiments, the feeding assembly 12 includes a material conveying pipeline 121 and a positive pressure blowing pipeline 122 . The material conveying pipeline 121 and the positive pressure blowing pipeline 122 intersect at an acute angle and are connected to the inlet of the crushing chamber 11 .

[0062] The material conveying pipeline 121 can be a pipeline system for inputting the material to be crushed in the feed assembly 12. The positive pressure blowing pipeline 122, as a pipeline system in the pneumatic conveying pipeline system that uses positive pressure airflow to blow the material flow to achieve material conveyance, can be used to blow the material to be crushed conveyed by the material conveying pipeline 121 into the crushing chamber 11.

[0063] The connected material conveying pipeline 121 and the positive pressure blowing pipeline 122 intersect at an acute angle. It can be that the angle between the central axis of the material conveying pipeline 121 and the central axis of the positive pressure blowing pipeline 122 is an acute angle, and the flow direction of the material to be crushed in the material conveying pipeline 121 and the flow direction of the airflow in the positive pressure blowing pipeline 122 have the same component, so that the material to be crushed conveyed by the material conveying pipeline 121 can be smoothly blown into the crushing chamber 11 by the airflow in the positive pressure blowing pipeline 122, which is beneficial to reduce the possibility of blockage of the material to be crushed.

[0064] In some embodiments, the collecting assembly includes a material collecting container 5 , and an inlet of the material collecting container 5 is connected to the sorting chamber 2 .

[0065] The material collector 5 may be a device for collecting materials, and collecting the materials makes subsequent transportation and storage of the materials more convenient.

[0066] By connecting the inlet of the material collector 5 to the sorting chamber 2, the materials coming out of the sorting chamber 2 can enter the material collector 5 for collection, making the subsequent transportation and storage of the materials more convenient.

[0067] Exemplarily, the collector 5 may include a cyclone separator 51, a bag dust collector 6, or a sedimentation chamber collector 5. Those skilled in the art may set the type of collector 5 to collect materials according to actual conditions.

[0068] In some embodiments, the collection assembly also includes a dust collector 6, the collector 5 includes a cyclone separator 51 and a collection bin 52, the feed port of the cyclone separator 51 is connected to the sorting chamber 2, the exhaust port of the cyclone separator 51 is connected to the dust collector 6, and the collection bin 52 is connected to the discharge port of the cyclone separator 51.

[0069] The cyclone separator 51 is a device for separating gas-solid systems or liquid-solid systems, and can separate solid particulate materials from gas mixed with solid particulate materials. The collection bin 52 can be a bin structure for temporarily storing materials.

[0070] By making the collector 5 include a cyclone separator 51, and connecting the feed port of the cyclone separator 51 to the sorting chamber 2, the material mixed in the air flow coming out of the sorting chamber 2 can be separated and retained, and fall to the discharge port located at the bottom end of the cyclone separator 51; by connecting the collection bin 52 to the discharge port at the bottom end of the cyclone separator 51, the material can fall into the collection bin 52 through the discharge port of the cyclone separator 51 for temporary storage, which is convenient for subsequent transportation and storage of the material.

[0071] The dust collector 6 can be a device for removing and collecting material dust particles mixed in the gas. By connecting the exhaust port of the cyclone separator 51 to the dust collector 6, the material mixed in the airflow, after being separated by the cyclone separator 51, can enter the dust collector 6 for dust removal. This not only reduces the amount of dust released into the surrounding air, which is beneficial to environmental protection, but also allows the material dust particles to be recovered, which helps to reduce material loss.

[0072] Exemplarily, the dust collector 6 can be a cyclone separator, which can facilitate the installation of an induced draft fan 7 and other equipment at the exhaust port of the cyclone separator, so as to improve the airflow or material flow state in the material crushing device; the dust collector 6 can also be a bag dust collector 6, which has good dust collection efficiency and can better intercept the material dust particles in the mixture, which is conducive to further reducing the loss of material.

[0073] In some embodiments, the material crushing device further includes an induced draft fan 7, which is connected to the collecting assembly.

[0074] The induced draft fan 7 can be a device that generates negative pressure to extract air. The induced draft fan 7 is connected to the collection assembly, and can be connected to the exhaust port of the cyclone separator 51 in the collection assembly, which serves as the dust collector 6. This increases the airflow velocity in the material pulverizing device, thereby improving the material conveying efficiency in the material pulverizing device.

[0075] Some embodiments of the present application further provide a battery production system, comprising a material pulverizing device according to any of the aforementioned technical solutions, the material pulverizing device being configured to pulverize a material to be pulverized. The material pulverized by the material pulverizing device may be a battery active material. Because the powdered battery active material pulverized by the material pulverizing device according to the aforementioned technical solution has a relatively high quality, the battery production system is beneficial for improving battery quality.

[0076] Some embodiments of the present application provide a material crushing device such as Figure 1 As shown, it includes a crusher 1, a sorting component, a collecting component and an induced draft fan 7. The crusher 1 includes a crushing chamber 11, a feeding component 12 and an injection component 13. The distribution pipeline 131 in the injection component 13 is arranged around the outer periphery of the outlet of the crushing chamber 11, and a plurality of nozzles 133 with multiple blowing ports facing the outlet of the crushing chamber 11 are arranged at intervals thereon. The nozzle 133 is used to spray air into the crushing chamber 11. The positive pressure blowing pipeline 122 in the feeding component 12 intersects with the material conveying pipeline 121 at an acute angle, and delivers the material to be crushed from the material conveying pipeline 121 to the crushing chamber 11. The sorting component includes a sorting chamber 2 and a grading wheel 3 arranged in the sorting chamber 2. The sorting chamber 2 is connected to the crushing chamber 11 and the feed port of the cyclone separator 51 in the collecting component. The exhaust port of the cyclone separator 51 is connected to the dust collector 6, and the induced draft fan 7 is connected to the dust collector 6. In the above structure, the airflow ejected from the nozzle 133 into the crushing chamber 11 can drive the materials to be crushed in the crushing chamber 11 to collide or rub against each other and be crushed, so that the materials to be crushed can be well crushed, and the crushed materials are sorted by the sorting component and then collected and utilized, so that the particle size of the obtained materials is relatively uniform, and the materials prepared by the material crushing device have better quality.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A material crushing device, characterized in that: include: The crusher comprises a crushing chamber, a feeding assembly and an air jet assembly, wherein the feeding assembly is connected to the crushing chamber and is used to convey the material to be crushed into the crushing chamber, and the air jet assembly comprises a nozzle and is used to spray air into the crushing chamber; A sorting assembly includes a sorting chamber and a classifying wheel disposed in the sorting chamber, wherein the sorting chamber is connected to the crushing chamber, and the classifying wheel is used to sort the crushed material according to particle size; A collecting assembly is connected to the sorting chamber, and is used to collect the materials sorted by the grading wheel.

2. The material crushing device according to claim 1, characterized in that: There are multiple nozzles, and the jet assembly also includes a distribution pipeline. The multiple nozzles are connected to the distribution pipeline and are arranged at intervals along the distribution pipeline.

3. The material crushing device according to claim 2, characterized in that: The distribution pipeline is arranged along the circumference of the wall of the crushing cavity and around the outer circumference of the outlet of the crushing cavity. The blowing ports of the plurality of nozzles are all directed towards the outlet of the crushing cavity.

4. The material crushing device according to claim 1, characterized in that: The flow velocity of the airflow ejected by the nozzle is V, 50m / s≤V≤400m / s.

5. The material crushing device according to claim 1, characterized in that: The outlet of the crushing cavity is connected to the bottom end of the sorting cavity, the top end of the sorting cavity is connected to the collecting assembly, and the grading wheel is located between the top end and the bottom end of the sorting cavity.

6. The material crushing device according to claim 1, characterized in that: The feeding assembly includes a material conveying pipeline and a positive pressure blowing pipeline that are connected. The material conveying pipeline and the positive pressure blowing pipeline intersect at an acute angle and are connected to the inlet of the crushing cavity.

7. The material crushing device according to claim 1, characterized in that: The collecting assembly includes a material collector, and the inlet of the material collector is connected to the sorting cavity.

8. The material crushing device according to claim 7, characterized in that: The collection assembly also includes a dust collector, the collector includes a cyclone separator and a collection bin, the feed port of the cyclone separator is connected to the sorting chamber, the exhaust port of the cyclone separator is connected to the dust collector, and the collection bin is connected to the discharge port of the cyclone separator.

9. The material crushing device according to claim 1, characterized in that: The material crushing device further includes an induced draft fan, which is connected to the collecting assembly.

10. A battery production system, characterized in that: It comprises the material crushing device according to any one of claims 1 to 9, wherein the material crushing device is used to crush the material to be crushed.

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