Air jet mill for micro-nano powder

Abstract

The utility model relates to a kind of airflow pulverizer for micro-nano powder, it is characterized by: including feeding module and airflow pulverizing module;The feeding module is set at the side of airflow pulverizing module, for conveying micro-nano powder to airflow pulverizing module;In the utility model, by setting feeding module at the side of airflow pulverizing module, the conveying of micro-nano powder is carried out using conveying auger, then by setting the structure of pre-pulverization in connecting pipeline, when micro-nano powder enters into connecting channel and falls on breaking net, by air bag cooperation pulse valve release pulse airflow, on the one hand, it can drive impact column to hit breaking net, and the accumulated massive micro-nano powder is broken, on the other hand, the airflow of pulse jet can be quickly blown through breaking net by the powder on breaking net, realize the pre-breaking of micro-nano powder;It is convenient for subsequent airflow pulverizing module to carry out further breaking, so that the breaking effect of micro-nano powder is better.

Description

Technical Field

[0001] This utility model relates to the field of airflow pulverizers, and more particularly to an airflow pulverizer for micro and nano powders. Background Technology

[0002] The process of pulverizing micro and nano powders requires a pulverizer. Existing pulverizing methods such as mechanical impact pulverizers, vibratory mills, and stirred mills have unsatisfactory pulverizing effects. Furthermore, the pulverization process generates a large amount of heat, which can cause heat-sensitive materials to deteriorate, leading to equipment aging. Equipment wear can also contaminate products. Therefore, these mechanical pulverizers can no longer fully meet the increasingly high requirements for ultrafine powder materials. Some manufacturers are using air jet mills to replace mechanical impact pulverizers, vibratory mills, and stirred mills.

[0003] However, existing air jet mills cannot pre-crush aggregated micro-nano powder materials during use, resulting in insufficient airflow to fully crush the aggregated micro-nano powder materials. Therefore, we propose an air jet mill for micro-nano powders. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an airflow pulverizer for micro and nano powders, which can solve the problem of traditional airflow separation of micro and nano powders and the inability to pulverize micro and nano powders that are aggregated in advance, resulting in the airflow not being able to fully pulverize the aggregated micro and nano powder raw materials.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: an airflow pulverizer for micro-nano powders, the innovation of which is: it includes a feeding module and an airflow pulverizing module; the feeding module is arranged on one side of the airflow pulverizing module and is used to convey micro-nano powders into the airflow pulverizing module;

[0006] The feeding module includes a feeding frame, a feeding box, a conveying auger, a crushing screen, and a pulse module. The feeding frame is a rectangular frame structure and is located on one side of the airflow pulverizing module. The conveying auger is horizontally positioned on the top of the feeding frame, and one end of the conveying auger is connected to a drive motor to drive the auger to rotate. The other end of the conveying auger is a discharge port and is connected to the airflow pulverizing module through a connecting pipe. A feeding port is provided on the upper surface of the conveying auger near the drive motor end. The feeding box is located at the feeding port of the conveying auger and is in communication with the conveying auger.

[0007] The crushing mesh is horizontally arranged inside the connecting pipe; the pulse module is installed on the connecting pipe; the pulse module includes an air tank, a pulse pipe, and a pulse valve; the air tank is located outside the connecting pipe; the pulse pipe is connected to the output end of the air tank and extends into the connecting pipe and is located above the crushing mesh; the pulse valve is located on the pulse pipe; the micro-nano powder falling on the crushing mesh is blown through the crushing mesh and enters the airflow pulverizing module through the pulse pipe.

[0008] Furthermore, the portion of the pulse pipeline located within the connecting pipeline has at least two branch pipes, namely a first branch pipe and a second branch pipe; both the first and second branch pipes are provided with a plurality of pulse nozzles, all aligned with the crushing mesh; an impact column is embedded in the pulse nozzle on the first branch pipe, and an impact plate is provided at the end of the impact column for striking the crushing mesh, and the surface of the impact plate is connected to the outer wall of the first branch pipe by a spring; the impact column is pushed out of the pulse nozzle by the pulse airflow to realize the pulse-type impact of the impact plate on the crushing mesh; the pulse nozzle on the second branch pipe is used to pass the micro-nano powder falling on the crushing mesh through the crushing mesh and enter the airflow pulverizing module through the connecting pipeline.

[0009] Furthermore, the airflow pulverizing module includes an airflow pulverizer body, and the side of the airflow pulverizer body is provided with a feed port connected to a connecting pipe.

[0010] The advantages of this utility model are:

[0011] 1) In this utility model, a feeding module is set on one side of the airflow pulverizing module to transport micro-nano powders using a conveying auger. Then, a pre-crushing structure is set in the connecting pipe. When the micro-nano powders enter the connecting channel and fall onto the crushing net, a pulse airflow is released by the air tank and pulse valve. On the one hand, the impact column can be driven to strike the crushing net, breaking up the accumulated blocky micro-nano powders. On the other hand, the airflow from the pulse nozzle can quickly blow the powders on the crushing net through the crushing net, realizing the pre-crushing of micro-nano powders. This facilitates further crushing by the subsequent airflow pulverizing module, resulting in a better crushing effect for micro-nano powders. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of an airflow pulverizer for micro and nano powders according to the present invention.

[0014] Figure 2 This is a partially enlarged view of an airflow pulverizer for micro and nano powders according to the present invention. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] like Figure 1 Figure 2 The airflow pulverizer for micro and nano powders shown includes a feeding module 1 and an airflow pulverizing module 2; the feeding module 1 is disposed on one side of the airflow pulverizing module 2 and is used to convey micro and nano powders into the airflow pulverizing module 2.

[0018] The feeding module 1 includes a feeding frame 11, a feeding box 12, a conveying auger 13, a crushing screen 14, and a pulse module 15. The feeding frame 11 has a rectangular frame structure and is located on one side of the airflow pulverizing module 2. The conveying auger 13 is horizontally located on the top of the feeding frame 11, and one end of the conveying auger 13 is connected to a drive motor to drive the conveying auger 13 to rotate. The other end of the conveying auger 13 is a discharge port and is connected to the airflow pulverizing module 2 through a connecting pipe 16. A feeding port is provided on the upper surface of the conveying auger 13 near the drive motor end. The feeding box 12 is located at the feeding port of the conveying auger 13 and is in communication with the conveying auger 13.

[0019] The crushing mesh 14 is horizontally arranged inside the connecting pipe 16; the pulse module 15 is installed on the connecting pipe; the pulse module 15 includes an air tank 151, a pulse pipe 152, and a pulse valve 153; the air tank 151 is arranged outside the connecting pipe 16; the pulse pipe 152 is connected to the output end of the air tank 151, and the pulse pipe 152 extends into the connecting pipe 16 and is located above the crushing mesh 14; the pulse valve 153 is arranged on the pulse pipe 16; the micro-nano powder falling on the crushing mesh 14 is blown through the crushing mesh 14 and enters the airflow pulverizing module 2 through the pulse pipe 152.

[0020] The portion of the pulse conduit 152 located within the connecting conduit has at least two branches, namely a first branch 154 and a second branch 155. Both the first branch 154 and the second branch 155 are provided with several pulse nozzles, all aligned with the crushing mesh. An impact column 156 is embedded in the pulse nozzle on the first branch 154. The end of the impact column 156 is provided with a striking plate for striking the crushing mesh 14, and the surface of the striking plate is connected to the outer wall of the first branch 154 by a spring 157. The impact column 156 is pushed out of the pulse nozzle by the pulse airflow to realize the pulse striking of the striking plate on the crushing mesh 14. The pulse nozzle on the second branch 155 is used to pass the micro-nano powder falling on the crushing mesh 14 through the crushing mesh and into the airflow pulverizing module 2 through the connecting conduit 16.

[0021] The airflow pulverizing module 2 includes an airflow pulverizer body, and the side of the airflow pulverizer body is provided with a feed port connected to the connecting pipe 16.

[0022] The working principle of this utility model is as follows: A feeding module is set on one side of the airflow pulverizing module to transport micro-nano powders using a conveying auger. Then, a pre-crushing structure is set in the connecting pipe. When the micro-nano powders enter the connecting channel and fall onto the crushing net, a pulse airflow is released through the air chamber and pulse valve. On the one hand, the impact column can be driven to strike the crushing net, breaking up the accumulated blocky micro-nano powders. On the other hand, the airflow from the pulse nozzle can quickly blow the powders on the crushing net through the crushing net, realizing the pre-crushing of the micro-nano powders. This facilitates further crushing by the subsequent airflow pulverizing module, resulting in a better crushing effect for the micro-nano powders.

[0023] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. An air jet mill for micronano-powder, characterized by: It includes a feeding module and an airflow pulverizing module; the feeding module is located on one side of the airflow pulverizing module and is used to transport micro-nano powders into the airflow pulverizing module; The feeding module includes a feeding frame, a feeding box, a conveying auger, a crushing screen, and a pulse module. The feeding frame is a rectangular frame structure and is located on one side of the airflow pulverizing module. The conveying auger is horizontally positioned on the top of the feeding frame, and one end of the conveying auger is connected to a drive motor to drive the auger to rotate. The other end of the conveying auger is a discharge port and is connected to the airflow pulverizing module through a connecting pipe. A feeding port is provided on the upper surface of the conveying auger near the drive motor end. The feeding box is located at the feeding port of the conveying auger and is in communication with the conveying auger. The crushing mesh is horizontally arranged inside the connecting pipe; the pulse module is installed on the connecting pipe; the pulse module includes an air tank, a pulse pipe, and a pulse valve; the air tank is located outside the connecting pipe; the pulse pipe is connected to the output end of the air tank and extends into the connecting pipe and is located above the crushing mesh; the pulse valve is located on the pulse pipe; the micro-nano powder falling on the crushing mesh is blown through the crushing mesh and enters the airflow pulverizing module through the pulse pipe.

2. The jet mill for micro-nano powder according to claim 1, characterized in that: The portion of the pulse pipeline located within the connecting pipeline has at least two branch pipes, namely a first branch pipe and a second branch pipe. Both the first and second branch pipes are equipped with several pulse nozzles, all aligned with the crushing mesh. An impact column is embedded within the pulse nozzle on the first branch pipe, and an impact plate is provided at the end of the impact column for striking the crushing mesh. The surface of the impact plate is connected to the outer wall of the first branch pipe by a spring. The impact column is pushed out of the pulse nozzle by the pulse airflow to achieve pulse-type impact of the impact plate on the crushing mesh. The pulse nozzle on the second branch pipe is used to pass the micro-nano powder falling on the crushing mesh through the crushing mesh and into the airflow pulverizing module through the connecting pipeline.

3. The jet mill for micro-nano powder of claim 1, wherein: The airflow pulverizing module includes an airflow pulverizer body, and the side of the airflow pulverizer body is provided with a feed port connected to a connecting pipe.

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