A nanoceramic powder airflow pulverizing and classifying device

Abstract

The utility model discloses a kind of airflow pulverization classification devices for nanometer ceramic powder, it is related to nanometer ceramic powder processing technical field, including airflow pulverization mechanism, airflow pulverization mechanism includes classification mechanism, classification mechanism includes support frame board, the upper end of support frame board is installed with classification box, the lower end of classification box is fixedly installed with detachable conical tube, classification box is installed with step motor on the upper end, the transmission shaft rod is rotatably installed with the upper end of classification box and is penetrated, classification turbine is arranged in the inside of classification box, and spiral guide vane is installed on the inner wall of classification box. The utility model, spiral guide vane arranged in classification box can guide the flow of airflow and material, make material more orderly in classification process, cooperate classification turbine, greatly improve classification precision, can satisfy the production demand of high-precision nanometer ceramic powder.

Description

Technical Field

[0001] This utility model relates to the field of nano-ceramic powder processing technology, and in particular to an airflow pulverizing and classifying device for nano-ceramic powder. Background Technology

[0002] With the rapid development of nanotechnology, nano-ceramic powders, due to their unique physicochemical properties, have been widely used in many high-end fields such as electronic information, biomedicine, and aerospace. The performance of nano-ceramic powders is closely related to factors such as particle size, particle size distribution, and particle morphology, and airflow milling and classification technology, as a key means to prepare high-quality nano-ceramic powders, has attracted much attention.

[0003] However, in existing technologies, common grading methods mainly rely on simple centrifugal force or inertial force to separate coarse and fine particles. For nanoscale fine particles, this grading method is difficult to accurately distinguish particles of different sizes, resulting in the presence of coarse or fine particles that do not meet the particle size requirements in the graded product, which affects product quality. Moreover, existing grading devices are complex to operate and have a limited adjustment range when adjusting the grading particle size, and cannot quickly adapt to the diverse requirements of different production needs for the particle size of nano-ceramic powders. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing an airflow pulverizing and classifying device for nano-ceramic powders.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an airflow pulverizing and classifying device for nano-ceramic powder, comprising an airflow pulverizing mechanism, the airflow pulverizing mechanism comprising a classification mechanism, the classification mechanism comprising a support frame plate, a classification box being installed through the upper end of the support frame plate, a detachable conical tube being fixedly installed at the lower end of the classification box, a stepper motor being installed at the upper end of the classification box, a transmission shaft being rotatably installed through the upper end of the classification box, a classification turbine being provided inside the classification box, and a spiral guide plate being installed on the inner wall of the classification box.

[0006] Preferably, a connecting pipe is fixedly installed at the lower end of the tapered tube, and a special-shaped tube is installed through the upper end of the grading box.

[0007] Preferably, the upper end of the drive shaft is fixed to the output end of the stepper motor, and the lower end of the drive shaft is fixed to the upper end of the staged turbine.

[0008] Preferably, the staged turbine is located in the middle of the helical guide vane.

[0009] Preferably, the lower end of the support frame plate is fixed to the upper end of the grinding box of the airflow grinding mechanism, and the lower end of the connecting pipe is fixed to the upper opening of the grinding box of the airflow grinding mechanism.

[0010] Preferably, a shock-absorbing mechanism is fixedly installed at the lower end of the pulverizing chamber of the airflow pulverizing mechanism.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by setting up a grading mechanism, the spiral guide plate set in the grading box can guide the flow of air and materials, making the materials more orderly in the grading process. Combined with the grading turbine, it greatly improves the grading accuracy and can meet the production needs of high-precision nano-ceramic powder.

[0012] 2. In this utility model, by setting a shock absorption mechanism, the vibration during equipment operation can be effectively reduced, which not only improves the working environment, but also reduces the wear caused by vibration and extends the service life of the equipment. In addition, the entire device has a reasonable structure and the components are closely matched, which can realize the efficient crushing and classification of nano-ceramic powder, improve production quality and efficiency, and has good practicality and promotion value. Attached Figure Description

[0013] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an airflow pulverizing and classifying device for nano-ceramic powders; Figure 2 This utility model provides a front view of the airflow pulverizing and classifying device for nano-ceramic powders. Figure 3 This utility model provides a partial half-section diagram of the classification mechanism of an airflow pulverizing and classifying device for nano-ceramic powders. Figure 4 This invention presents a three-dimensional view of the grading mechanism of an airflow pulverizing and grading device for nano-ceramic powders.

[0014] Legend: 1. Airflow pulverizing mechanism; 11. Shock absorption mechanism; 2. Grading mechanism; 21. Support frame plate; 22. Grading box; 23. Conical tube; 24. Connecting pipe; 25. Stepper motor; 26. Drive shaft; 27. Grading turbine; 28. Spiral guide plate; 29. ​​Special-shaped tube. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides an airflow pulverizing and classifying device for nano-ceramic powders, including an airflow pulverizing mechanism 1, which includes a classification mechanism 2. The classification mechanism 2 includes a support frame plate 21, a classification box 22 is installed through the upper end of the support frame plate 21, a detachable conical tube 23 is fixedly installed at the lower end of the classification box 22, a stepper motor 25 is installed at the upper end of the classification box 22, a transmission shaft 26 is rotatably installed through the upper end of the classification box 22, and a classification turbine 27 is provided inside the classification box 22. The inner wall of the 2 is equipped with a spiral guide plate 28, the lower end of the tapered tube 23 is fixedly installed with a connecting pipe 24, the upper end of the classifier 22 is installed with a special-shaped tube 29, the upper end of the drive shaft 26 is fixed to the output end of the stepper motor 25, the lower end of the drive shaft 26 is fixed to the upper end of the classifier turbine 27, the classifier turbine 27 is located in the middle of the spiral guide plate 28, the lower end of the support frame plate 21 is fixed to the upper end of the airflow pulverizing mechanism 1 pulverizing box, and the lower end of the connecting pipe 24 is fixed to the upper opening of the airflow pulverizing mechanism 1 pulverizing box.

[0018] The specific setup and function of this embodiment are described in detail below. A support frame plate 21 is installed on the upper end of the airflow pulverizing mechanism 1. A classifying box 22 is installed through the upper end of the support frame plate 21. A tapered tube 23 is installed at the lower end of the classifying box 22, and a connecting pipe 24 is installed at the lower end of the tapered tube 23. The lower end of the connecting pipe 24 is connected to the discharge port of the airflow pulverizing mechanism 1. A stepper motor 25 is installed on the upper end of the classifying box 22. A drive shaft 26 is rotatably installed through the upper end of the classifying box 22. A classifying turbine 27 is installed at the lower end of the drive shaft 26. A spiral guide plate 28 is installed on the inner wall of the classifying box 22, and the classifying turbine 27 is located in the middle of the spiral guide plate 28. A special-shaped tube 29 is installed through the upper end of the box 22. The stepper motor 25 is controlled to run. The stepper motor 25 drives the classifying turbine 27 to rotate through the transmission shaft 26. The classifying turbine 27 rotates at high speed under the drive of the stepper motor 25, generating a strong centrifugal force to separate coarse and fine materials. Fine particles that meet the particle size requirements enter the special-shaped tube 29 through the classifying turbine 27, while coarse particles fall into the airflow pulverizing mechanism 1 under the action of centrifugal force and gravity to continue to be pulverized. The spiral guide plate 28 is spirally wrapped around the outside of the classifying turbine 27, which can guide the flow direction of airflow and material, making the flow of material in the classifying box 22 smoother and improving the classification accuracy. By adjusting the speed of the stepper motor 25, the rotational speed of the classifying turbine 27 can be changed, thereby adjusting the magnitude of the centrifugal force and achieving precise control over the classification particle size. The cone angle of the tapered tube 23 is designed to be 60°-75°. This angle range allows coarse particles to slide more smoothly into the crushing chamber of the return airflow crushing mechanism 1 under the action of gravity, while avoiding the accumulation of materials in the pipe. The spiral guide vane 28 has a spiral angle of 45°±5°, which is consistent with the direction of the rising airflow, ensuring a smooth transition of the airflow to the staged turbine 27 area and reducing turbulence disturbance; The blades of the grading turbine 27 adopt a variable cross-section design, with the thickness gradually decreasing from the root to the top, which can make the centrifugal force distribution more uniform and improve the grading efficiency. The connecting pipe 24 is connected to the discharge port of the crushing box in the airflow crushing mechanism 1 by a flange. A sealing rubber ring is set at the connection to prevent dust leakage and facilitate the disassembly and maintenance of the equipment. The support plate 21 can support the grading box 22 and improve the stability of the stepper motor 25 during operation. The special-shaped tube 29 can guide the separated materials and facilitate the centralized collection of materials.

[0019] Example 2: Figure 1 and Figure 2 As shown, a shock-absorbing mechanism 11 is fixedly installed at the lower end of the pulverizing box of the airflow pulverizing mechanism 1.

[0020] The overall effect of this embodiment is that by installing a shock-absorbing mechanism 11 at the lower end of the airflow pulverizing mechanism 1, the vibration amplitude of the airflow pulverizing mechanism 1 during operation can be reduced through the synergistic action of the base, shock-absorbing spring and shock-absorbing pad. This effectively reduces the loosening and wear of equipment parts caused by vibration, extends the service life of the equipment, and improves the working environment. It can dampen the airflow pulverizing mechanism 1, effectively reduce the vibration during equipment operation, not only improve the working environment, but also reduce the wear caused by vibration and extend the service life of the equipment. When the equipment vibrates during operation, the vibration energy is transmitted to the damping springs and pads. Through the elastic deformation of the springs and the elastic buffering of the pads, the vibration energy is converted into elastic potential energy and heat energy, thereby attenuating the vibration and reducing the transmission of vibration to the ground and the surrounding environment. The entire device has a reasonable structure and all components are closely integrated, enabling efficient pulverization and classification of nano-ceramic powders, improving production quality and efficiency, and possessing good practicality and promotional value.

[0021] The method of use and working principle of this device: First, pour the material into the airflow pulverizing mechanism 1, and then control the operation of the airflow pulverizing mechanism 1. In the airflow pulverizing mechanism 1, multiple nozzles connected to the high-pressure gas source are evenly distributed along the circumference of the pulverizing chamber. After the high-pressure gas is accelerated by the nozzles, it forms a supersonic airflow and is sprayed into the pulverizing chamber, so that the material entering the pulverizing chamber is in a fluidized suspension state. At the same time, the dispersing impeller in the pulverizing chamber rotates at high speed under the drive of the drive motor, further agitating the material and enhancing the dispersion effect of the material, so that the material particles are fully mixed and the material and the high-speed airflow are fully mixed. In this state, the material particles collide violently with each other, rub and shear at the intersection of each nozzle, so as to achieve pulverization and refinement, and generate ceramic powder with finer particle size. Finally, the pulverized material, carried by the high-speed airflow, rises through the connecting pipe 24 into the classifying chamber 22 of the classifying mechanism 2. The stepper motor 25 drives the transmission shaft 26, causing the classifying turbine 27 to rotate at high speed, generating a strong centrifugal force field. At the same time, the spiral guide plate 28 on the inner wall guides the airflow and material to flow along a specific spiral path, allowing the material to enter the classifying area in an orderly manner. Under the action of centrifugal force, coarse particles with larger diameters and heavier weights are thrown towards the inner wall of the classifying chamber 22, and under the combined action of gravity and airflow thrust, they return to the airflow pulverizing mechanism 1 along the conical pipe 23 and the connecting pipe 24 to continue pulverizing. Meanwhile, fine particles with smaller diameters and lighter weights, due to the smaller centrifugal force they experience, can pass through the classifying turbine 27 and enter the shaped pipe 29, and are then transported away. By adjusting the speed of the stepper motor 25, the rotational speed of the classifying turbine 27 can be changed, thereby adjusting the magnitude of the centrifugal force and achieving precise control of the classifying particle size.

[0022] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. An airflow pulverizing and classifying device for nano-ceramic powders, comprising an airflow pulverizing mechanism (1), characterized in that: The airflow pulverizing mechanism (1) includes a grading mechanism (2), which includes a support frame plate (21). A grading box (22) is installed through the upper end of the support frame plate (21). A detachable conical tube (23) is fixedly installed at the lower end of the grading box (22). A stepper motor (25) is installed at the upper end of the grading box (22). A transmission shaft (26) is rotatably installed through the upper end of the grading box (22). A grading turbine (27) is provided inside the grading box (22). A spiral guide plate (28) is installed on the inner wall of the grading box (22).

2. The airflow pulverizing and classifying device for nano-ceramic powder according to claim 1, characterized in that: A connecting pipe (24) is fixedly installed at the lower end of the tapered tube (23), and a special-shaped tube (29) is installed through the upper end of the grading box (22).

3. The airflow pulverizing and classifying device for nano-ceramic powder according to claim 2, characterized in that: The upper end of the drive shaft (26) is fixed to the output end of the stepper motor (25), and the lower end of the drive shaft (26) is fixed to the upper end of the staged turbine (27).

4. The airflow pulverizing and classifying device for nano-ceramic powder according to claim 3, characterized in that: The staged turbine (27) is located in the middle of the spiral guide plate (28).

5. The airflow pulverizing and classifying device for nano-ceramic powder according to claim 4, characterized in that: The lower end of the support frame plate (21) is fixed to the upper end of the crushing box of the airflow crushing mechanism (1), and the lower end of the connecting pipe (24) is fixed to the upper opening of the crushing box of the airflow crushing mechanism (1).

6. The airflow pulverizing and classifying device for nano-ceramic powder according to claim 1, characterized in that: The airflow pulverizing mechanism (1) has a shock-absorbing mechanism (11) fixedly installed at the lower end of the pulverizing box.

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