A piezoelectric ceramic driven resonant micro-nano particle feeding system and method

Abstract

A piezoelectric ceramic driven resonant micro-nano particle feeding system and method belongs to the field of micro-nano particle feeding devices. It includes a microcontroller, a power regulator, a material storage and resonance generator, a material feeder, a height regulator and a vibrator. The microcontroller adjusts the output power and waveform through the power regulator and outputs it to the material storage and resonance generator and the vibrator. The height regulator is arranged below the material storage and resonance generator, the material feeder is arranged below the material storage and resonance generator outlet, and the vibrator is connected to the material feeder in the middle and lower parts. It is suitable for micro-amount powder feeding of micro-nano solid particles, and solves the current problems of low lower limit of powder feeding particle size, particle agglomeration and uneven feeding.

Description

Technical Field

[0001] The invention relates to a piezoelectric ceramic driven resonant micro-nano particle feeding system and method, belonging to the field of micro-nano particle feeding devices. Background Art

[0002] In experimental research and related industries such as food and chemical industry, micro-nano powder materials are often needed. During the use of powders, suitable feeding devices are needed to provide continuous, uniform and stable material supply. When it comes to single particle feeding of micro-nano materials, it is necessary to be able to feed them in a single particle dispersed form.

[0003] The commonly used spiral powder feeding devices, rotary disk scraper powder feeding devices, and electromagnetic vibration powder feeding devices are suitable for feeding coarse powders. They have large feeding amounts, poor feeding stability, and low feeding accuracy, and cannot meet the feeding requirements of micro-nano powders. In terms of miniaturized and precise feeding, the continuous and stable feeding of trace materials is achieved with the help of fluidized and bubbling powder feeding devices with pneumatic conveying. However, both powder feeding devices have requirements for the particle size of the materials, and the minimum particle size of the materials that can be fed is tens of microns. Micro-powder feeding devices represented by the ejector type can achieve micro-feeding of materials and overcome the particle size limitation, but cannot avoid the agglomeration problem between micro-nano particles.

[0004] Therefore, there is an urgent need for a piezoelectric ceramic driven resonant micro-nano particle feeding system and method to meet the feeding needs of micro-nano particles. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of low lower limit of powder particle size, particle agglomeration and uneven feeding in existing powder feeding devices. The present invention provides a piezoelectric ceramic driven resonant micro-nano particle feeding system and method. A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to determine the key or important parts of the present invention, nor is it intended to limit the scope of the present invention.

[0006] The technical solution of the present invention:

[0007] Solution 1: A piezoelectric ceramic driven resonant micro-nano particle feeding system, including a microcontroller, a power regulator, a material storage and resonance generator, a material feeder, a height regulator and a vibrator. The microcontroller adjusts the output power and waveform through the power regulator and outputs it to the material storage and resonance generator and the vibrator. The height regulator is arranged below the material storage and resonance generator, the material feeder is arranged below the discharge port of the material storage and resonance generator, and the vibrator is connected to the material feeder in the middle and lower parts.

[0008] Preferably: a baffle is provided inside the material storage and resonance generator, and a piezoelectric ceramic driving sheet is arranged on the bottom surface.

[0009] Preferably, the baffle is a reciprocating baffle, the ends of the baffle are collected at the center, and a discharge port is opened at the center.

[0010] Preferably: the height adjuster is arranged on one side of the bottom of the material storage and resonance generator, and the height adjuster includes a support, a spring and a threaded column. The support is threadedly mounted with a threaded column, and the threaded column is located on one side above the support and is externally mounted with a spring, one end of the spring is in contact with the top of the support, and the other end of the spring is in contact with the bottom of the material storage and resonance generator.

[0011] Preferably, the piezoelectric ceramic driving plate is composed of a plurality of ceramic plates connected in parallel.

[0012] Preferably, the vibrator is driven by a piezoelectric ceramic sheet.

[0013] Preferably, the power regulator is a piezoelectric ceramic driving plate and a driving power supply for the piezoelectric ceramic plate, which is driven by a waveform generated by a microcontroller, and the microcontroller generates an arbitrary waveform.

[0014] Preferably, the microcontroller generates a square wave waveform and a sine wave waveform, the square wave drives the material storage and resonance generator through a power regulator, and the sine wave drives the vibrator through a power regulator.

[0015] Preferably, the frequency of the square wave is the same as the resonant frequency of the feed material.

[0016] Solution 2: A piezoelectric ceramic driven resonant micro-nano particle feeding method is implemented based on a piezoelectric ceramic driven resonant micro-nano particle feeding system described in Solution 1, and includes the following steps:

[0017] Step 1. Initialize the microcontroller and power regulator;

[0018] Step 2. According to the material characteristics and feeding requirements, use the microcontroller to set the working parameters of the material storage and the resonance generator and the vibrator respectively;

[0019] Step 3. Load the material, the material is placed inside the first baffle at the end of the material storage and the resonance generator;

[0020] Step 4. Start the material storage and resonance generator to make the material vibrate, and at the same time, start the vibrator;

[0021] Step 5. Adjust the height adjuster to move the material toward the discharge port, and complete the feeding of the micro-nano particle material through the material feeder. At the same time, calibrate the powder feeding amount before use.

[0022] The present invention has the following beneficial effects:

[0023] The microcontroller of the present invention adjusts the output power and waveform, and outputs the square wave voltage to the material storage and resonance generator through the power regulator, and the sine wave voltage is output to the vibrator. The output of different waveforms meets the dual requirements of resonance and vibration. The height regulator adjusts the height of the material storage and the storage part of the resonance generator. Its spring can effectively fix the height of the height regulator to avoid affecting the oscillation of the material storage and the resonance generator. The vibrator is used for the vibration of the material feeder. The operation of the vibrator can ensure that the material is given in a single particle state. The material is given from the material storage and the resonance generator through the material feeder. The baffle can effectively enhance the uniformity of the material. It is suitable for micro-powder feeding of micro-nano solid particles, and solves the current problems of low lower limit of powder feeding particle size, particle agglomeration, and uneven feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a piezoelectric ceramic driven resonant micro-nano particle feeding system of the present invention;

[0025] Figure 2 yes Figure 1 A magnified image of point A;

[0026] Figure 3 It is a schematic structural diagram of the baffle of the present invention.

[0027] In the figure: 1-microcontroller, 2-power regulator, 3-material storage and resonance generator, 4-height regulator, 5-vibrator, 6-discharge port, 7-baffle, 8-support, 9-spring, 10-threaded column. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0029] The connection mentioned in the present invention is divided into fixed connection and detachable connection. The fixed connection is a non-detachable connection including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but not limited to conventional detachable methods such as threaded connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can always be found in the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example: a fixed connection is selected as a welding connection, and a detachable connection is selected as a hinge connection.

[0030] Specific implementation method 1: Combination Figure 1-Figure 3 The present embodiment is described. A piezoelectric ceramic driven resonant micro-nano particle feeding system of the present embodiment includes a microcontroller 1, a power regulator 2, a material storage and resonance generator 3, a material feeder, a height regulator 4 and a vibrator 5;

[0031] The microcontroller 1 adjusts the output power and waveform through the power regulator 2, and the power regulator processes the waveform and outputs it in the form of voltage to the material storage and resonance generator 3 and the vibrator 5. The microcontroller 1 generates an arbitrary waveform and adjusts the frequency, width, offset, phase, and duty cycle parameters of the waveform to adjust the resonant frequency of the material storage and resonance generator 3 and the vibration amplitude and frequency of the vibrator 5 according to the material characteristics. For example, the microcontroller 1 in this embodiment generates a square wave waveform and a sine wave waveform. The square wave drives the material storage and resonance generator 3 through the power regulator 2, and the sine wave drives the vibrator 5 through the power regulator 2. The frequency of the square wave is the same as the resonant frequency of the fed material, that is, the frequency output to the material storage and resonance generator 3 is the same as the resonant frequency of the material.

[0032] The height adjuster 4 is arranged below the material storage and resonance generator 3, and changes the inclination angle of the material storage and resonance generator by rotating the thread. The material feeder is arranged below the discharge port 6 of the material storage and resonance generator 3 to collect the material given out from the storage and resonance generator for feeding. The vibrator 5 is connected to the material feeder in a fit with the middle and lower parts. Through the vibration of the vibrator 5, it is ensured that the material falls stably in the form of single particles.

[0033] The material storage and resonance generator 3 includes a storage bin, the main body is made of aluminum, and the interior of the aluminum is a smooth surface. The main body is made of aluminum, and the interior of the aluminum is a smooth surface. A baffle 7 is provided inside the storage bin, and a piezoelectric ceramic driving plate for resonance is provided on the bottom of the storage bin, which is used to complete the storage of initial materials and the transportation of resonant materials. The end of the storage bin is connected to the height adjuster 4. The baffle 7 is a reciprocating baffle, and the end of the baffle 7 is collected at the center. The micro-nano particles are placed at the end inside the aluminum material, and a circular hole is opened at the top, that is, a discharge port 6 is opened at the center for the discharge of micro-nano particles. During the working process, the micro-nano particles will move to the outlet through the baffle. Such a design can increase the moving distance of the micro-nano particles, avoid uneven feeding caused by uneven stacking of materials in the early stage, and improve the uniformity of micro-nano particle feeding.

[0034] The piezoelectric ceramic drive plate is composed of multiple ceramic plates connected in parallel, which can avoid damage to the piezoelectric ceramic caused by large-scale, high-parameter oscillation, improve the control parameters of the piezoelectric ceramic, and effectively increase the life of the ceramic. The vibrator 5 is driven by a piezoelectric ceramic plate.

[0035] The power regulator 2 is a driving power source for the piezoelectric ceramic driving plate and the piezoelectric ceramic plate, and is driven by the waveform generated by the microcontroller 1 .

[0036] The height adjuster 4 is arranged on one side of the bottom of the material storage and resonance generator 3. The height adjuster 4 includes a support 8, a spring 9 and a threaded column 10. The support 8 is threadedly mounted with the threaded column 10. The threaded column 10 is located on one side above the support 8 and is externally sleeved with a spring 9. The lowest end of the threaded column 10 is provided with a screw handle, such as Figure 2 As shown, one end of the spring 9 is in contact with the top of the support 8, and the other end of the spring 9 is in contact with the bottom of the material storage and resonance generator 3. The extension length of the spring 9 outside the threaded column 10 is changed by rotating the thread, thereby raising or lowering the height of the tail end of the material storage and resonance generator 3. With such a design, there is no fixed rigid connection at the tail end of the material storage and resonance generator 3, which ensures the oscillation characteristics of the material storage and resonance generator. At the same time, the existence of the spring 9 also plays a locking role in the height adjustment.

[0037] A vibrator 5 is provided at the middle and lower part of the material feeder. The vibrator 5 uses a piezoelectric ceramic plate to generate vibration. During operation, the vibration frequency and amplitude of the vibrator 5 are adjusted by the microcontroller 1. As the vibrator 5 vibrates, the micro-nano particles inside the material feeder collide with the tube wall during the falling process, and then the sample is given. Such a design can ensure the continuity of material feeding and avoid the occurrence of agglomeration between micro-nano particles.

[0038] The microcontroller 1 determines the waveform characteristics that resonate with the material according to the material characteristics, and adjusts the frequency and amplitude of the sine wave used to drive the vibrator 5 according to the powder feeding requirements and the material characteristics. The power regulator 2 drives the two piezoelectric ceramic pieces according to the signal sent by the microcontroller 1. The two piezoelectric ceramic pieces are the piezoelectric ceramic drive piece and the piezoelectric ceramic piece. The two power supplies can output independently according to the different waveforms generated by the microcontroller 1. Different waveforms produce different effects, and the functions used in this device are also different. The output of different waveforms meets the dual requirements of resonance and vibration.

[0039] The square wave is used to generate oscillation to reach the resonant frequency of the material, so that the material can oscillate in the storage and resonance generator 3, so that it has a moving force. The sine wave is used to drive the piezoelectric ceramic vibrator 5, so that the piezoelectric ceramic produces periodic displacement and completes the vibration. This design not only meets the resonance requirements of the material, but also meets the requirements for the adjustable vibration characteristics of the vibrator 2.

[0040] Specific implementation method 2: Combination Figure 1-Figure 3This embodiment is described. A piezoelectric ceramic driven resonant micro-nano particle feeding method of this embodiment is implemented based on a piezoelectric ceramic driven resonant micro-nano particle feeding system described in the first embodiment, and includes the following steps:

[0041] Step 1. Initialize the microcontroller 1 and the power regulator 2;

[0042] Step 2. According to the material characteristics and feeding requirements, use the microcontroller 1 to set the working parameters of the material storage and the resonance generator 3 and the vibrator 5 respectively;

[0043] Step 3. Loading materials, the materials are placed within the first baffle 7 at the tail end of the material storage and resonance generator 3;

[0044] Step 4. Start the material storage and resonance generator 3 to make the material vibrate, and at the same time, start the vibrator 5;

[0045] Step 5. Adjust the height adjuster 4 to move the material toward the discharge port 6, and complete the feeding of the micro-nano particle material through the material feeder. At the same time, the piezoelectric ceramic drives the resonant micro-nano particle feeding device to calibrate the powder feeding amount before use.

[0046] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities based on the mathematical knowledge of arrangement and combination. Therefore, the present invention will no longer describe the technical solutions after arrangement and combination one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present invention.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A piezoelectric ceramic driven resonant micro-nano particle feeding system, characterized in that: The invention comprises a microcontroller (1), a power regulator (2), a material storage and resonance generator (3), a material feeder, a height regulator (4) and a vibrator (5); the microcontroller (1) regulates the output power and waveform, and outputs the output power and waveform to the material storage and resonance generator (3) and the vibrator (5) after passing through the power regulator (2); the height regulator (4) is arranged below the material storage and resonance generator (3); the material feeder is arranged below the discharge port (6) of the material storage and resonance generator (3); the vibrator (5) and the material feeder are connected to each other in the middle and lower parts; a baffle (7) is arranged inside the material storage and resonance generator (3), and a piezoelectric ceramic driving sheet is arranged on the bottom surface; the baffle (7) is a reciprocating baffle, and the end of the baffle (7) is closed at the center, and a discharge port (6) is opened at the center; The material is placed inside the first baffle (7) at the rear end of the material storage and resonance generator (3), and the microcontroller (1) generates a square wave waveform and a sine wave waveform. The square wave drives the material storage and resonance generator (3) through the power regulator (2), and the sine wave drives the vibrator (5) through the power regulator (2). The square wave is used to generate oscillation to reach the resonant frequency of the material, so that the material can oscillate in the storage and resonance generator (3) to have a moving force. The sine wave drives the piezoelectric ceramic vibrator (5), causing the piezoelectric ceramic vibrator (5) to generate periodic displacement to complete vibration. The frequency of the square wave is the same as the resonant frequency of the material being fed, that is, the frequency output to the material storage and resonance generator (3) is the same as the resonant frequency of the material.

2. A piezoelectric ceramic driven resonant micro-nano particle feeding system according to claim 1, characterized in that: The height adjuster (4) is arranged on one side of the bottom of the material storage and resonance generator (3), and the height adjuster (4) comprises a support (8), a spring (9) and a threaded column (10). The threaded column (10) is threadedly mounted on the support (8), and the threaded column (10) is located on one side above the support (8) and is externally sleeved with a spring (9). One end of the spring (9) is in contact with the top of the support (8), and the other end of the spring (9) is in contact with the bottom of the material storage and resonance generator (3).

3. A piezoelectric ceramic driven resonant micro-nano particle feeding system according to claim 2, characterized in that: The piezoelectric ceramic driving plate is composed of a plurality of ceramic plates connected in parallel.

4. A piezoelectric ceramic driven resonant micro-nano particle feeding system according to claim 3, characterized in that: The vibrator (5) is driven by a piezoelectric ceramic sheet.

5. A piezoelectric ceramic driven resonant micro-nano particle feeding system according to claim 4, characterized in that: The power regulator (2) is a driving power source for the piezoelectric ceramic driving plate and the piezoelectric ceramic plate, and is driven by a waveform generated by the microcontroller (1).

6. A piezoelectric ceramic driven resonant micro-nano particle feeding method is implemented by relying on the piezoelectric ceramic driven resonant micro-nano particle feeding system according to claim 1, characterized in that: The following steps are involved: Step 1. Initialize the microcontroller (1) and the power regulator (2); Step 2. According to the material characteristics and feeding requirements, use the microcontroller (1) to set the working parameters of the material storage and the resonance generator (3) and the vibrator (5); Step 3. Loading the material, the material is placed inside the first baffle (7) at the tail end of the material storage and resonance generator (3); Step 4. Start the material storage and resonance generator (3) to make the material vibrate, and at the same time, start the vibrator (5); Step 5. Adjust the height adjuster (4) to move the material toward the discharge port (6), and complete the feeding of the micro-nano particle material through the material feeder. At the same time, calibrate the powder feeding amount before use.

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