A powder disaggregation classification system

Abstract

This application discloses a powder deagglomeration and classification system, belonging to the field of powder material handling technology. It includes: a silo and a powder processing device, the powder processing device being used for modifying, drying, and deagglomerating the powder; a closed powder conveying pipeline connecting the silo and the powder processing device, providing a fully enclosed space within the system; a powder stripping device, installed inside the silo, for intercepting the powder and causing it to fall into the silo; and a self-cleaning device for self-cleaning the closed powder conveying pipeline and the powder stripping device. By combining the powder stripping device and the self-cleaning device, continuous and stable transportation of the powder within the closed powder conveying pipeline is achieved, avoiding system blockages that could affect production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of powder material processing technology, and specifically relates to a powder deagglomeration and classification system. Background Technology

[0002] Because of its large specific surface area and high surface energy, nano silver powder is prone to adsorption between particles, forming soft or hard agglomerates. Such agglomeration will affect its industrial performance. Therefore, it is necessary to deagglomerate the silver powder before processing. During the processing of silver powder, it is necessary to isolate oxygen / moisture, prevent explosions, and ensure purity to provide silver powder raw materials that meet the requirements of high-end applications. However, fully enclosed processing of powder can easily lead to powder blockage, thereby affecting processing efficiency.

[0003] The existing technology has the following technical shortcomings: it is difficult to solve the clogging problem in fully enclosed silver powder processing. Utility Model Content

[0004] In view of the technical problems existing in the background art, this application provides a powder deagglomeration and classification system, including:

[0005] A silo and a powder processing device, wherein the powder processing device is used to modify, dry and depolymerize the powder;

[0006] A closed-loop material conveying pipeline is used to connect the silo and the material processing device and provide a closed space throughout the entire system.

[0007] A powder stripping device is installed inside the hopper to intercept the powder and cause it to fall into the hopper.

[0008] The self-cleaning device is used to self-clean the closed material powder conveying pipeline and the material powder stripping device.

[0009] In other embodiments, the powder stripping device includes a precision filter bag.

[0010] In other embodiments, the self-cleaning device includes a negative pressure source and a positive pressure source disposed in the closed powder conveying pipeline.

[0011] In other embodiments, the hopper includes at least two hoppers, and at least one of the hoppers is connected to the powder processing device.

[0012] In other embodiments, the powder processing device includes an air mill deagglomerator, which is disposed between two adjacent silos and connected to the two silos via the closed powder conveying pipeline.

[0013] In other embodiments, adjacent pairs are connected by a cleaning pipe equipped with a valve, and the closed material conveying pipe is equipped with a negative pressure source and a positive pressure source in the passage at both the starting end and the collection end of the material transport.

[0014] In other embodiments, it further includes: a powder collection device, wherein a powder screening device is provided between the powder collection device and the adjacent silo, and the powder screening device and the silo are connected by the closed powder conveying pipeline.

[0015] In other embodiments, the powder screening device includes:

[0016] Sieve cylinder;

[0017] A screen is fixed to the inner wall of a screen cylinder, and at least two screens are provided, with different aperture sizes between the two screens.

[0018] In other embodiments, the screen cylinder has a vibrating feed port on the edge of the upper surface of each screen mesh, and the bottom edge of the vibrating feed port coincides with the upper surface of the screen mesh.

[0019] In other embodiments, an ultrasonic generator is fixedly connected to the screen.

[0020] This application provides a powder deagglomeration and classification system, comprising: a silo and a powder processing device, wherein the powder processing device is used to modify, dry, and deagglomerate the powder; the silo serves as a temporary storage unit for the powder in a fully enclosed processing chain, and the powder processing device provides basic powder processing functions such as modification, deagglomeration and crushing, and powder drying; a closed powder conveying pipeline connects the silo and the powder processing device and provides a fully enclosed space within the system, which isolates the influence of external pollutants and, combined with the internal inert gas filling, can suppress dust explosions; and a powder stripping device, disposed within the silo, intercepts the powder and causes it to fall into the silo. The material powder stripping device can separate the material powder from the carrier that carries it, so that it remains in the hopper for further processing, thus working with the closed material powder conveying pipeline to realize the material powder transportation function; the self-cleaning device is used to self-clean the closed material powder conveying pipeline and the material powder stripping device, thereby realizing online cleaning of the conveying pipeline and the material powder stripping device, avoiding cross-contamination of residual materials, and reducing the amount of silver powder residue in the system, thereby indirectly reducing the loss of material powder during processing; by combining the material powder stripping device and the self-cleaning device, the continuous and stable transportation of material powder in the closed material powder conveying pipeline is achieved, avoiding system blockage and affecting production efficiency.

[0021] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a powder deagglomeration and classification system provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the silo portion of a powder deagglomeration and classification system provided in an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the cleaning pipeline configuration of a powder deagglomeration and classification system provided in an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the structure of a powder screening device and a powder collection device in a powder deagglomeration and classification system provided in this application embodiment.

[0027] Explanation of reference numerals in the attached drawings: 10, silo; 20, powder processing device; 21, air mill deagglomerator; 22, double cone modified fluidized bed dryer; 30, powder stripping device; 31, precision filter bag; 40, self-cleaning device; 41, cleaning pipeline; 50, powder sieving device; 51, sieve cylinder; 52, sieve mesh; 53, ultrasonic generator; 60, powder collection device; 61, large particle size powder storage bottle; 62, small particle size powder storage bottle; 63, microparticle size powder storage bottle. Detailed Implementation

[0028] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0030] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0033] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0034] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0035] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0036] Silver powder deagglomeration system is a precious metal powder processing system that solves the agglomeration problem and accurately classifies the powder through a closed-loop process of pneumatic impact deagglomeration, centrifugal classification, and surface modification. It is often an essential pre-processing equipment for high-end electronic products, pure silver recycling, or aerospace materials.

[0037] This application provides a powder deagglomeration and classification system, mainly used to solve the problem of powder blockage caused by long-term system operation. In some embodiments, refer to Figure 1 A powder deagglomeration and grading system includes: a silo 10 and a powder processing device 20. The silo 10 can be a single unit or multiple units. For example, the silo 10 is located at the beginning of the system for storing powder, and the powder processing device 20 is located adjacent to the silo 10 and directly connected via a closed powder conveying pipeline. For example, two silos 10 are provided, with the powder processing device 20 positioned between them. It should be noted that the location of the silo 10 is also closely related to its function. For example, the silo 10 is located at the beginning, and the powder processing device 20 is located adjacent to the silo 10 and directly connected via a closed powder conveying pipeline. In this case, the silo 10 is only used to store unprocessed powder, serving as a processing unit. The starting point of the process, the silo 10 can initially store powder, or it can be externally connected to a pipe for transporting powder or have an opening for manually adding powder. In this case, the silo 10 can exist independently of the entire system and abandon its sealed state during system operation. For example, the silo 10 is set in the powder processing device 20. This can mean that the silo 10 and the powder processing device 20 are integrated in the same large device, or it can mean that the silo 10 is among multiple independent powder processing devices 20 that perform different functions. Specifically, the powder in the silo 10 is processed powder that has been partially or completely processed. In this case, the silo 10 needs to be part of a fully enclosed link and cannot abandon its sealed state.

[0038] The powder processing device 20 is used to modify, dry, and depolymerize the powder. It should be noted that the powder processing device 20 can be an integrated device that can simultaneously achieve all process effects, or it can be a system composed of multiple independent devices for separate processing. For example, the powder processing device 20 includes the Tanggula TAC system, in which case the silo 10 is only set at the beginning or end of the system. For example, the powder processing device 20 includes a double cone modified fluidized bed dryer 22 for simultaneously drying and modifying the powder, and an air mill depolymerizer 21 for air-jet depolymerization. In this case, the silo 10 can be set at the beginning or end of the system, or it can be set after the double cone modified fluidized bed dryer 22 and before the air mill depolymerizer 21, thereby playing a buffer storage role and enabling better coordination between two processes with different working hours and output.

[0039] A closed-loop material conveying pipeline is used to connect the silo 10 and the material processing device 20 and provide a closed space for the entire system.

[0040] A powder stripping device 30 is installed inside the hopper 10 to intercept powder and allow it to fall into the hopper 10. It should be noted that the powder stripping device 30 can be any structure capable of intercepting powder and allowing it to fall into the hopper 10. For example, the powder stripping device 30 includes multiple parallel filaments horizontally arranged at the feed inlet of the hopper 10. Both ends of the filaments are fixed to mounting bases on the inner wall of the hopper 10. Tension is adjusted by locking components to ensure that the intercepting net does not deform under airflow impact, allowing the powder airflow to enter. When the material is in hopper 10, agglomerated powder larger than the filamentary gaps is intercepted on the mesh surface and falls naturally into the bottom of hopper 10 under gravity. For example, the powder stripping device 30 includes an adjustable gap baffle structure. Specifically, an inclined baffle is installed below the feed pipe at the top of hopper 10. The bottom of the baffle forms an adjustable gap with the inner wall of hopper 10. After the powder airflow impacts the baffle, its kinetic energy is reduced. Due to inertial collision, it is intercepted and slides down the baffle into hopper 10, thereby intercepting the powder sent from the closed powder conveying pipeline as much as possible, thereby improving processing efficiency.

[0041] The self-cleaning device 40 is used to self-clean the closed conveying pipeline and the powder stripping device 30. It should be noted that the self-cleaning device 40 can include any structure capable of self-cleaning the closed powder conveying pipeline and the powder stripping device 30. For example, the powder stripping device 30 includes a filamentous interception mesh structure. Correspondingly, the self-cleaning device 40 includes a negative pressure backflushing system. Specifically, a negative pressure air extraction port is provided above the filamentous mesh, and a positive pressure spray pipe is provided below. The spray pipe is aligned with the gaps between the filamentous parts, and the spray pipe is activated to spray the filamentous mesh. The blowing process simultaneously opens the negative pressure exhaust port to assist the positive pressure blowing effect, thereby loosening the powder adhering to the surface of the filamentous mesh and achieving a self-cleaning effect. For example, when the powder stripping device 30 includes an adjustable gap baffle structure, the self-cleaning device 40 includes a mechanical scraper-vibration combined mechanism. Specifically, the scraper is attached to the surface of the baffle and is driven by a cylinder to move back and forth along the baffle. At the same time, an ultrasonic transducer is installed on the back of the baffle. The scraper scrapes the powder adhering to the surface of the baffle, and the vibration of the ultrasonic transducer removes the ultrafine powder adhering to the surface, thereby achieving a self-cleaning effect.

[0042] This application provides a powder deagglomeration and classification system, including: a silo 10 and a powder processing device 20, the powder processing device 20 being used for modifying, drying, and deagglomerating the powder; the silo 10 serving as a temporary storage unit for the powder in a fully enclosed processing chain, and the powder processing device 20 providing basic powder processing functions such as modification, deagglomeration and crushing, and powder drying; a closed powder conveying pipeline connecting the silo 10 and the powder processing device 20, providing a fully enclosed space within the system, which on the one hand isolates the influence of external pollutants, and on the other hand, combined with the internal inert gas filling, can suppress dust explosions; and a powder stripping device 30, installed inside the silo 10, for intercepting the powder and causing it to fall into the silo 10. Specifically, the powder stripping device 30 can strip the powder from the carrier that carries it, so that it remains in the silo 10 for further processing, thus cooperating with the closed powder conveying pipeline to realize the powder transportation function; the self-cleaning device 40 is used to self-clean the closed powder conveying pipeline and the powder stripping device 30, thereby realizing online cleaning of the conveying pipeline and the powder stripping device 30, avoiding cross-contamination of residual materials, and reducing the amount of silver powder residue in the system, thereby indirectly reducing the loss of powder during processing; by combining the powder stripping device 30 and the self-cleaning device 40, the powder is continuously and stably transported in the closed powder conveying pipeline, avoiding system blockage and affecting production efficiency.

[0043] In other embodiments, reference is made to... Figure 2The powder separation device 30 includes a precision filter bag 31. Specifically, the precision filter bag 31 is vertically fixed below the top inlet of the silo 10 by any installation method (such as bolt fixing or sleeve on a welding ring), so that most of the powder airflow entering the silo 10 flows through the filter bag fabric layer. The precision filter bag 31 adopts a multi-layer gradient pore structure. The outer layer is coarse-pore to intercept large particle agglomerates, and the inner layer is fine-pore to capture fine dust. The two layers of filter bags are coaxially fitted together by clamps to form a graded interception barrier. When the powder airflow enters the silo 10 from the closed powder conveying pipe, the agglomerated powder in the airflow is intercepted on the outer surface of the filter bag because the particle size is larger than the outer pore size of the filter bag, and falls naturally into the bottom of the silo 10 under the action of gravity. The discrete fine powder penetrates the outer filter bag with the airflow and is intercepted a second time by the inner fine-pore filter bag. Finally, only clean airflow is discharged from the exhaust port at the top of the filter bag, realizing the complete separation of powder and airflow.

[0044] In other embodiments, reference is made to... Figure 1 The self-cleaning device 40 includes a negative pressure source and a positive pressure source installed in the closed powder conveying pipeline. It should be noted that the positive pressure source and the negative pressure source can include any structure that can provide corresponding pressure conditions for the closed powder conveying pipeline. For example, the negative pressure source is a vacuum pump connected to the end of the closed powder conveying pipeline through a negative pressure pipeline, and the positive pressure source is an air compressor connected to the beginning of the closed powder conveying pipeline through a positive pressure pipeline. When the system enters the cleaning mode, the positive pressure source is first turned on to generate a high-pressure airflow to impact the inner wall of the pipeline and the powder stripping device 30, causing the attached powder to loosen and fall off. Then, the negative pressure source is switched to form a negative pressure suction to draw the fallen powder into the upper container, thereby realizing the self-cleaning of the precision powder stripping device 30 and the closed powder conveying pipeline without stopping the machine to disassemble the pipeline or filter bag, which has the effect of improving the efficiency of the process flow.

[0045] In other embodiments, reference is made to... Figure 1The system includes at least two silos 10, at least one of which is connected to the powder processing device 20. It is important to note that the function of each silo 10 varies depending on its relative position to the powder processing device 20. For example, two silos 10 are arranged side-by-side within the system frame, their bottoms fixed by a support frame, and their tops connected by a transverse connecting beam, forming a physically linked structure. The relative positions of the silos 10 remain independent, but the spacing is adapted to the pipeline connection requirements. The bottom outlet of each silo 10 is sealed with a flange to a branch interface of a closed powder conveying pipeline. The powder processing device 20 is located between or to the side of the two silos 10, selectively connected to the conveying pipeline of one of the silos 10 via a main pipeline branch valve. When the powder from the first silo 10 enters the powder processing device 20 for modification, drying, and depolymerization, the second silo 10 can simultaneously receive and temporarily store new powder. Through valve switching, the system can seamlessly switch to the second silo 10 after the first silo 10 is emptied. To ensure material supply and prevent production line interruptions, for example, two silos 10 are arranged side-by-side within the system framework, and both silos 10 are connected to the air mill deagglomerator 21 via a closed powder conveying pipeline. In this case, if both silos 10 are feed silos 10 that supply material to the air mill deagglomerator 21, then the purpose of having two silos 10 is to receive the discharge from the device whose discharge rate in the previous step was insufficient to meet the process consumption of the air mill deagglomerator 21, and to achieve the purpose of powder confluence through multi-silo aggregation; when one of the two silos 10 When one bin is a feed bin 10 and the other is a receiving bin 10, the receiving bin 10 is used to receive the processed powder conveyed by the gas mill deagglomerator 21. It can also serve as the end point of the system and be used for screening afterwards. Both bins 10 have a buffer redundancy effect in their respective positions. The feed bin 10 is used as a buffer bin when the gas mill deagglomerator 21 fails, and the receiving bin 10 is used as a buffer bin when there are problems with screening (or loading and unloading). Therefore, the dual bin 10 structure significantly improves the reliability of the system and the flexibility of the process.

[0046] In other embodiments, reference is made to... Figure 1The powder processing device 20 includes an air mill deagglomerator 21, which is located between two adjacent silos 10 and connected to the two silos 10 via a closed powder conveying pipeline. The air mill deagglomerator 21 employs a combination of a high-speed rotating impeller and a static grinding ring. When powder enters the air mill deagglomerator 21 from the first silo 10, the vortex field generated by the high-speed impeller forces the powder particles to collide with each other and undergo shear friction with the grinding ring, achieving efficient deagglomeration of agglomerates. The series layout of the air mill deagglomerator 21 optimizes the continuity of the material processing flow: the first silo 10 serves as a pre-processing unit to temporarily store unagglomerated raw powder; the air mill deagglomerator 21 serves as a dynamic deagglomeration unit to process incoming materials in real time; and the second silo 10 serves as a post-processing buffer unit to store deagglomerated powder. The three are connected via a closed powder conveying pipeline to form a unidirectional streamlined transmission, avoiding the intermediate transfer links required by independent deagglomeration equipment in traditional systems, and preventing dust leakage and secondary agglomeration risks during transfer.

[0047] In other embodiments, reference is made to... Figure 3 The two adjacent silos are connected by a cleaning pipe 41, which is equipped with a valve. The closed material conveying pipeline is equipped with a negative pressure source and a positive pressure source in the passage at the starting end and the collection end of the material transport. Specifically, the cleaning pipe 41 is sealed to the side wall interface of the two adjacent silos 10 through a flange. The cleaning pipe 41 is equipped with a pneumatic ball valve to control the on and off. At the same time, a negative pressure valve and a positive pressure valve are added at the starting end (i.e., the connection of the discharge port of the first silo 10) and the collection end (i.e., the connection of the inlet of the second silo 10) of the closed material conveying pipeline, respectively. The negative pressure valve is connected to the negative pressure source through a pipe, and the positive pressure valve is connected to the positive pressure source through a pipe. The four sets of valves are linked by a central controller to switch the airflow direction. When the system needs to switch hopper 10, the pneumatic ball valve of the cleaning pipe 41 is opened, allowing the temporarily stored powder in the unconnected hopper 10 to be transferred to the working hopper 10 through the cleaning pipe 41, avoiding material stagnation. In cleaning mode, the powder conveying pipe valve is closed, and the cleaning pipe 41 valve is opened. The positive pressure valve injects high-pressure airflow into the closed powder conveying pipe. The airflow carries the residual powder and flushes it back through the cleaning pipe 41 to the target hopper 10. Then, the powder is sucked into the collection container through the negative pressure valve at the collection end, forming an additional cleaning path. Thus, when other devices are connected between the two hoppers 10, the two hoppers 10 can be cleaned online through the cleaning channel while the devices are processing but not discharging material. This further improves the maintenance efficiency and operational continuity of the system, and to a certain extent enhances the material coordination capability between the hoppers 10.

[0048] In other embodiments, reference is made to... Figure 1 and Figure 4The system also includes a powder collection device 60, and a powder screening device 50 is installed between the powder collection device 60 and the adjacent silo 10. Specifically, the powder screening device 50 is sealed between the inlet of the powder collection device 60 and the outlet of the adjacent silo 10 through a closed powder conveying pipeline flange to achieve particle size separation.

[0049] In other embodiments, reference is made to... Figure 4 The powder screening device 50 includes a screen cylinder 51 and screens 52. The screen cylinder 51 serves as the outer shell of the powder screening device 50, providing space for the powder inside and space for the installation of other internal parts. Screens 52 are fixed to the inner wall of the screen cylinder 51, and at least two screens 52 are provided, with different apertures between the two screens 52. Specifically, the screens 52 are fixedly or detachably connected to the inner wall of the screen cylinder 51, and at least two are provided, with different apertures between the two screens 52, to form at least three interconnected spaces through the screens 52 on the inner wall of the screen cylinder 51. The screening function is achieved through the screens 52 with different apertures, allowing the first screen 52 to... Large-diameter powder is sieved, while small-diameter powder is blocked by a second screen 52. Particle-diameter powder passes through the second screen 52 and falls directly into the corresponding part of the powder collection device 60. Each space in the screen cylinder 51 is connected to a collection component for powder of different diameters in the powder collection device 60. For example, the space inside the screen cylinder 51 divided by the screen 52 from top to bottom includes a first receiving cavity, a second receiving cavity, and a third receiving cavity. The first receiving cavity is connected to a large-diameter powder storage bottle 61 through a flexible connecting tube, the second receiving cavity is connected to a small-diameter powder storage bottle 62 through a flexible connecting tube, and the third receiving cavity is connected to a particle-diameter powder storage bottle 63 through a flexible connecting tube.

[0050] In other embodiments, reference is made to... Figure 4 The screen cylinder 51 has a vibrating feed port on the edge of the upper surface of each screen 52. The bottom edge of the feed port coincides with the upper surface of the screen 52. Specifically, when the powder is vibrated and screened by the screen 52, the part with a particle size larger than the screen mesh of the screen 52 will be blocked on the upper surface of the screen 52 and will move towards the edge of the screen 52 under continuous vibration. At this time, the powder with the corresponding particle size can leave the screen cylinder 51 through the vibrating feed port and smoothly enter the powder collection device 60.

[0051] In other embodiments, reference is made to... Figure 4An ultrasonic generator 53 is fixedly connected to the screen 52. Specifically, the ultrasonic generator 53 is rigidly fixed to the reinforcing ribs of the screen 52 frame by bolts. Its vibration output end is directly coupled to the metal frame of the screen 52, and each screen 52 is independently equipped with at least one ultrasonic generator 53. The ultrasonic generator 53 has a built-in piezoelectric ceramic transducer. The output frequency is adjusted by a frequency converter to make the screen 52 generate axial high-frequency micro-amplitude vibration, which is used in conjunction with the vibrating feed port to vibrate and discharge the material. After receiving the vibration energy of the screen 52, the vibrating feed port discharges the coarse particles intercepted on the surface of the screen 52 along the screen surface to avoid particle retention.

[0052] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A powder deagglomeration and classification system, characterized in that, include: The material silo (10) and the material powder processing device (20) are used to modify, dry and deagglomerate the material powder; A closed-loop material conveying pipeline is used to connect the silo (10) and the material processing device (20) and to provide a closed space for the entire system. A powder stripping device (30) is installed inside the hopper (10) to intercept the powder and cause it to fall into the hopper (10); The self-cleaning device (40) is used to self-clean the closed material powder conveying pipeline and the material powder stripping device (30).

2. The powder deagglomeration and classification system according to claim 1, characterized in that, The powder stripping device (30) includes a precision filter bag (31).

3. A powder deagglomeration and classification system according to claim 1 or 2, characterized in that, The self-cleaning device (40) includes a negative pressure source and a positive pressure source disposed in the closed material powder conveying pipeline.

4. The powder deagglomeration and classification system according to claim 1, characterized in that, The hopper (10) includes at least two, and at least one of the hoppers (10) is connected to the powder processing device (20).

5. The powder deagglomeration and classification system according to claim 4, characterized in that, The powder processing device (20) includes an air mill deagglomerator (21), which is located between two adjacent silos (10) and connected to the two silos (10) through the closed powder conveying pipeline.

6. A powder deagglomeration and classification system according to claim 4 or 5, characterized in that, The two adjacent silos (10) are also connected by a cleaning pipe (41), which is equipped with a valve. The closed material powder conveying pipe is equipped with a negative pressure source and a positive pressure source in the passage at the starting end and the collection end of the material transportation.

7. The powder deagglomeration and classification system according to claim 1, characterized in that, Also includes: A powder collection device (60) is provided between the powder collection device (60) and the adjacent silo (10), and the powder screening device (50) and the silo (10) are connected by the closed powder conveying pipeline.

8. A powder deagglomeration and classification system according to claim 7, characterized in that, The powder screening device (50) includes: Sieve cylinder (51); Screen (52), the screen (52) is fixed to the inner wall of the screen cylinder (51), and at least two screens (52) are provided, and the apertures of the two screens (52) are different.

9. A powder deagglomeration and classification system according to claim 8, characterized in that, The screen cylinder (51) has a vibrating feed port on the edge of the upper surface of each screen (52), and the bottom edge of the vibrating feed port coincides with the upper surface of the screen (52).

10. A powder deagglomeration and classification system according to claim 9, characterized in that, An ultrasonic generator (53) is fixedly connected to the screen (52).

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