Detection device for regulating and controlling particle size distribution of superfine high-purity spherical silica powder

Abstract

The invention discloses a detection device for regulating and controlling particle size distribution of superfine high-purity spherical silica powder, and belongs to the technical field of laser particle size analyzers. The detection device for regulating and controlling the particle size distribution of the superfine high-purity spherical silica powder comprises a base, a detection box is arranged on one side of the upper end of the base, and a first detection frame and a second detection frame are sequentially arranged in the middle of the detection box in the longitudinal direction. The invention solves the problems that when an existing laser particle analyzer is used for measuring and using a wet method, equipment cannot adjust the flowing speed according to the weight of a sample, so that an additional step of measuring and adjusting the weight of the sample is needed before the sample is measured and input, and the use and detection efficiency of the equipment is reduced. After the weight of a detected object is measured, the connection caliber with the whole flowing track can be adjusted through rotation of the first connecting pipe and the second connecting pipe, and the flowing speed of liquid and particles is adjusted by adjusting the caliber so as to adapt to the amount of input materials.

Description

Technical Field

[0001] The present invention relates to the technical field of laser particle size analyzers, and in particular to a detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder. Background Technique

[0002] The detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder is essentially a laser particle size analyzer, which measures the particle size distribution through the principle of laser scattering. It uses a laser beam to irradiate the sample, and the light signal scattered by the particles is received by a detector, and the particle size distribution data is obtained through computer processing. This device is suitable for the particle size regulation of ultra-fine high-purity spherical silica powder to ensure uniform product particle size and meet the requirements of high-end applications.

[0003] When the laser particle size analyzer measures and uses wet measurement, the sample is dispersed in a liquid, and the weight of the sample needs to be strictly measured every time the sample is put into the device. The device itself cannot adjust the flow rate according to the weight of the sample, resulting in an additional step of measuring and adjusting the weight of the sample before measuring and putting in the sample, reducing the efficiency of device use and detection. Summary of the Invention

[0004] The purpose of the present invention is to provide a detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder. After measuring the weight of the detected object, the rotation of the first connecting pipe and the second connecting pipe can adjust the connection diameter with the entire flow trajectory, and the flow rate of the liquid and particles is adjusted by adjusting the diameter to adapt to the amount of input material, solving the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder, including a base, on one side of the upper end of the base is provided a detection box, longitudinally and sequentially arranged in the middle position of the detection box are a first detection frame and a second detection frame, one end of the first detection frame is provided with an input pipe, one end of the second detection frame is provided with an output pipe, around the input pipe and the first detection frame are arranged three first connecting pipes with sequentially increasing liquid flow diameters, at the other end between the first detection frame and the second detection frame are arranged three second connecting pipes with sequentially increasing liquid flow diameters, on one side of the front end of the detection box are sequentially arranged a stirring barrel and a bracket, on the upper end of the bracket are sequentially arranged an electronic scale and a fixing frame. By adjusting the first connecting pipe and the second connecting pipe, the input pipe, the first detection frame, and the second detection frame with corresponding diameters are connected to adjust the flow rate for different weights of silica powder and adapt to different detection requirements.

[0006] Preferably, the three first connecting pipes are fixedly connected through a first connecting block, and the three second connecting pipes are fixedly connected through a second connecting block. The first connecting block and the second connecting block facilitate the adjustment of the positions of the first connecting pipe and the second connecting pipe.

[0007] Preferably, a progressive motor is provided at one end of each of the second connecting block and the first connecting block. A sliding rail is provided at the upper end inside the detection box. The outer wall of the progressive motor slides and is embedded inside the sliding rail. A first hydraulic rod is provided at one end of the second connecting block and the first connecting block corresponding to the progressive motor. The first hydraulic rod can horizontally adjust the progressive motor and the first connecting pipe and the second connecting pipe connected to the progressive motor through its telescopic movement.

[0008] Preferably, a second hydraulic rod is provided on one side of the connection position between the input pipe and the first connecting pipe, and both ends of the second hydraulic rod are fixedly connected to the outside of the detection box and the input pipe respectively. The second hydraulic rod can pull the input pipe alone to avoid the input pipe affecting the adjustment of the first connecting pipe.

[0009] Preferably, the first connecting block includes a central shaft and three connectors. The connector includes a sleeve and a connecting portion. Two openable and closable arc-shaped plates are provided on the sleeve. Inside the connecting portion, two sets of driving components for controlling the opening and closing of the two arc-shaped plates are arranged in a mirror image. The driving component includes a micro motor, a driving shaft, and two connecting rods. The driving shaft is rotationally connected to the micro motor. Driving disks are provided at both ends of the driving shaft. One end of the connecting rod is rotationally connected to the driving disk, and the other end of the driving rod is rotationally connected to the corresponding arc-shaped plate.

[0010] Preferably, a stirrer is provided inside the stirring barrel. One side of the stirrer is embedded in and slidably connected to the outer wall of the stirring barrel. The longitudinal sliding of the stirrer can expose the upper end outside the stirring barrel, which is convenient for putting the test substance in.

[0011] Preferably, clamping blocks are provided at both ends inside the fixing frame. Second threaded rods penetrate through both sides inside the clamping blocks, and the threaded parts of the second threaded rods are in threaded cooperation with the penetration positions of the clamping blocks. The relative movement of a pair of clamping blocks can complete the clamping and fixing of the container.

[0012] Preferably, one side of the fixing frame is rotatably connected to the upper end inside the bracket. By rotating the clamped container, the container can be tilted towards the inside of the stirring barrel to pour the test substance.

[0013] Preferably, a collection box is provided at the lower end of the detection box. A material dropping port penetrating the lower end inside the detection box is provided on the side of the collection box facing the detection box. The sewage discharged during subsequent cleaning can be directly discharged after the first connecting pipe is separated from the first detection frame, so that the sewage falls into the collection box.

[0014] Preferably, a touch terminal is provided at the front end of the detection box. The touch terminal is built-in with a detection system for assisting in the detection of the particle size distribution regulation of ultra-fine high-purity spherical silica powder and composed of a reset module, a weight extraction module, a calculation module, an adjustment module, and a detection module. Among them:

[0015] The weight extraction module is used to extract the weight of the detected silica powder;

[0016] The calculation module is used to calculate through a formula and, in combination with the data extracted by the weight extraction module, judge the clockwise rotation steps of the stepping motor at one end of the second connecting block and the first connecting block;

[0017] The calculation formula in the above calculation module is:

[0018]

[0019] In the above formula, H(x) is the unit step function:

[0020]

[0021] In the above calculation formula, W is the weight of the material to be measured extracted by the weight extraction module, in g; W1 is the demarcation threshold of the weight of the material to be measured corresponding to the first connecting pipe and the second connecting pipe with large diameters and the first connecting pipe and the second connecting pipe with medium diameters, in g; W2 is the demarcation threshold of the weight of the material to be measured corresponding to the first connecting pipe and the second connecting pipe with medium diameters and the first connecting pipe and the second connecting pipe with small diameters, in g;

[0022] θ1 is the angle of the stepping motor corresponding to the first connecting pipe and the second connecting pipe with large diameters, in degrees; θ2 is the angle of the stepping motor corresponding to the first connecting pipe and the second connecting pipe with medium diameters, in degrees; θ3 is the angle of the stepping motor corresponding to the first connecting pipe and the second connecting pipe with small diameters, in degrees;

[0023] α is the step angle of the stepping motor, in degrees / step;

[0024] N is the number of pulses required for the drive motor, in steps. The calculated N can give a start signal to the adjustment module to adjust the angles of the first connecting pipe and the second connecting pipe so that the weights of the materials transmitted corresponding to the diameters of the first connecting pipe and the second connecting pipe are appropriate;

[0025] The adjustment module is used to rotate and adjust the first connection block and the second connecting pipe according to the data calculated by the calculation module, and give start signals to the second hydraulic rod, two first hydraulic rods, the second connection block and the upper end of the first connection block;

[0026] The detection module is used to photograph and extract data of the liquid flowing at the position of the second detection frame and the particles in the liquid, and perform characterization detection on the liquid flowing at the position of the first detection frame and the particles in the liquid through the first detection frame;

[0027] The reset module is used to restore the first connecting pipe and the first connection block to the state before adjustment after the detection is completed and the inside of the device is cleaned.

[0028] Preferably, based on the weight extraction module, the calculation module and the adjustment module, the following steps are adopted to determine the target liquid flow diameter and control the stepping motor to rotate, driving the first hydraulic rod (26) to rotate the first connection block (15) to the first connecting pipe (16) corresponding to the target liquid flow diameter:

[0029] Preset the liquid flow diameters of the three first connecting pipes (16) to be the first diameter, the second diameter and the third diameter respectively;

[0030] The weight extraction module performs the following steps:

[0031] Based on the current weight value of the silicon micropowder weighed by the electronic scale (7), put the silicon micropowder into the stirring barrel (5) and stir to form a flowing liquid, and set the preset flow time for the whole flowing process from the input pipe (14) through the first connecting pipe (16), the first detection frame (18), the second connecting pipe (17), the second detection frame (19) and then flowing out from the output pipe (20);

[0032] The calculation module performs the following steps:

[0033] Based on the length of the flowing liquid in the whole flowing process and the preset flow time, calculate the estimated flow velocity of the flowing liquid;

[0034] Based on the current weight value, density value and preset flow time of the silicon micropowder, calculate the flow rate of the flowing liquid. The calculation formula for the flow rate of the flowing liquid is as follows:

[0035] Among them, represents the flow rate of the flowing liquid, the unit is cubic meters per second, m represents the current weight value of the silicon micropowder, the unit is kilograms, represents the density value of the silicon micropowder, and t represents the time, the unit is seconds;

[0036] Based on the flow rate of the flowing liquid and the estimated flow velocity, calculate the estimated pipe cross-sectional area value of the first connecting pipe (16);

[0037] Calculate the estimated target diameter value of the first connecting pipe (16) according to the estimated pipeline cross-sectional area value, and select the liquid flow diameter closest to it as the target liquid flow diameter from the liquid flow diameters.

[0038] The adjustment module performs the following steps: After obtaining the target liquid flow diameter of the first connecting pipe (16), the adjustment module controls the stepping motor to move, and drives the first hydraulic rod (26) to rotate the first connecting block (15) to the first connecting pipe (16) corresponding to the target liquid flow diameter.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] 1. When the liquid of the present invention drives the silicon micropowder to be detected to flow in the pipeline in the detection box, the first connecting pipe and the second connecting pipe with different diameters are adjusted for connection according to the amount of silicon micropowder put into the stirring barrel. By reducing the diameters of the first connecting pipe and the second connecting pipe, the flow rate of the material in the first detection frame and the second detection frame is increased when more silicon micropowder is put in, and by increasing the diameters of the first connecting pipe and the second connecting pipe, the flow rate in the first detection frame and the second detection frame is reduced when less silicon micropowder is put in. The acceleration of more granular materials can avoid the accumulation of granular materials, while the slower passage of less materials can avoid the situation where the speed is too slow to complete the required detection of the particle size distribution regulation of silicon micropowder, and there is no need to frequently adjust the power of the electromagnetic circulation pump to adapt to the input requirements of different amounts of materials.

[0041] 2. The present invention is provided with an electronic scale supported by a bracket on one side of the stirring barrel. The container is pre-placed on the upper end of the electronic scale. After the spherical silicon micropowder to be put into the stirring barrel is poured into the container on the upper end of the electronic scale, the electronic scale can be started to detect the weight of the material in the container. After the detection, the container can be clamped by the clamping block and rotated on the upper end of the bracket to actively pour the powder material in the container. The user only needs to place the container on the upper end of the electronic scale, turn on the electronic scale and add the material to be detected into the container, which reduces the operation difficulty and is convenient for the user to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic diagram of the overall external structure of the present invention;

[0043] Figure 2 is a schematic diagram of the positional relationship of the electromagnetic circulation pump of the present invention;

[0044] Figure 3 is a schematic diagram of the internal structure of the detection box of the present invention;

[0045] Figure 4 is a cross-sectional view of the internal structure of the first connecting pipe of the present invention;

[0046] Figure 5 Cross-sectional view of the positional relationship of the collection box of the present invention;

[0047] Figure 6 External structure schematic diagram of the first connecting pipe of the present invention;

[0048] Figure 7 Internal schematic diagram of the first connecting block of the present invention;

[0049] Figure 8 Internal structure cross-sectional view of the second connecting pipe;

[0050] Figure 9 Schematic diagram of the transmission structure of the first threaded rod of the present invention;

[0051] Figure 10 Cross-sectional view of the transmission structure of the clamping block of the present invention;

[0052] Figure 11 Schematic diagram of the flow chart of the detection system of the present invention.

[0053] In the figure: 1, base; 2, touch terminal; 3, detection box; 4, collection box; 5, stirring barrel; 6, bracket; 7, electronic scale; 8, fixed frame; 10, stirrer; 11, electromagnetic circulation pump; 12, digital camera; 13, monochromatic laser source; 14, input pipe; 15, first connecting block; 151, central axis; 152, connector; 1521, sleeve; 1522, connecting part; 1523, arc plate; 1524, support block; 16, first connecting pipe; 17, second connecting pipe; 18, first detection frame; 19, second detection frame; 20, output pipe; 21, blanking port; 24, second connecting block; 26, first hydraulic rod; 27, first threaded rod; 28, external connecting pipe; 29, second threaded rod; 30, clamping block; 31, second hydraulic rod; 32, sliding rail; 40, drive assembly; 41, micro motor; 42, drive shaft; 43, connecting rod. Detailed implementation manners

[0054] The present invention will be further described below in conjunction with specific embodiments.

[0055] As Figure 1 and Figure 2 shown, a detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder in this embodiment includes a base 1. On one side of the upper end of the base 1, a detection box 3 is provided. The powder to be detected is put into the stirring barrel 5 and mixed in the liquid, and then extracted by the electromagnetic circulation pump 11 and sent into the detection box 3 for detection;

[0056] Among them, as Figure 2 and Figure 5As shown, a pair of digital cameras 12 are arranged on one side inside the detection box 3. The two digital cameras 12 are 0.5 times and 10 times respectively, which improves the reliability of particle detection, enhances the ability to measure small particles, makes the images of detected particles clear, sharp and real, and improves the accuracy of the device in obtaining parameters such as aspect ratio and roundness through the accuracy of the images. A second detection frame 19 is arranged at the middle position of the detection box 3. When the liquid drives the particles to flow through the second detection frame 19 during the flow process, they are photographed and detected by a pair of digital cameras 12;

[0057] A monochromatic laser source 13 is arranged at the upper end of the digital camera 12, and a first detection frame 18 is arranged at the upper end of the second detection frame 19. The monochromatic laser source 13 is aligned with the first detection frame 18 for detection. Two lenses with an oblique incidence structure are arranged on both sides inside the first detection frame 18. The monochromatic laser source 13 can emit a scattering spectrum with a consistent wavelength and continuity towards the lenses, ensuring that even nano-particles can be effectively characterized;

[0058] To facilitate the transmission and discharge of the liquid, an input pipe 14 is arranged at one end of the first detection frame 18, and an output pipe 20 is arranged at one end of the second detection frame 19. The liquid and particles enter the detection box 3 from the position of the input pipe 14, and the liquid and detected particles are discharged from the position of the output pipe 20 after entering, and then flow back into the stirring barrel 5 again;

[0059] Among them, in order to adjust the flow velocity of the liquid and particles in the first detection frame 18 and the second detection frame 19 without changing the power and model of the electromagnetic circulation pump 11, so that the flow velocity matches the amount of silicon micropowder input, as Figure 4 、 Figure 6 and Figure 8 shown, three first connecting pipes 16 are arranged around between the input pipe 14 and the first detection frame 18, and three second connecting pipes 17 distributed around are arranged at the other end between the first detection frame 18 and the second detection frame 19. The three first connecting pipes 16 and the three second connecting pipes 17 are evenly distributed around. The included angle between two adjacent first connecting pipes 16 and two second connecting pipes 17 is 120°. And both ends of the first connecting pipe 16 are connected to the input pipe 14 and the first detection frame 18 by clamping slots, and the second connecting pipe 17 is connected to the first detection frame 18 and the second detection frame 19 by clamping slots. Through the splicing of the first connecting pipe 16 and the second connecting pipe 17, the liquid can flow and be detected in the detection box 3 along the trajectory of the input pipe 14, the first connecting pipe 16, the first detection frame 18, the second connecting pipe 17, the second detection frame 19 and the output pipe 20;

[0060] In addition, the inner liquid flow diameters of the three first connecting pipes 16 and the three second connecting pipes 17 increase in sequence. By adjusting the inner liquid flow diameters of the first connecting pipes 16 and the second connecting pipes 17, the speed of the liquid entering the first detection frame 18 and the second detection frame 19 is adjusted, so that the flow speed matches the weight of the input silicon micropowder. The three first connecting pipes 16 are fixedly connected through the first connecting block 15, and the three second connecting pipes 17 are fixedly connected through the second connecting block 24. Subsequently, the motor drives and drives the center positions of the first connecting block 15 and the second connecting block 24 to adjust the first connecting pipes 16 and the second connecting pipes 17;

[0061] To facilitate the adjustment of the first connecting pipes 16 and the second connecting pipes 17 and avoid the adjustment of the first connecting pipes 16 and the second connecting pipes 17 from affecting the normal operation of the internal flow trajectory of the detection box 3, as Figure 3 shown, stepping motors are arranged at one ends of the second connecting block 24 and the first connecting block 15. A sunken sliding rail 32 is horizontally arranged at the upper end inside the detection box 3. The outer wall of the stepping motor extends towards the sliding rail 32 and slides and is embedded inside the sliding rail 32. A first hydraulic rod 26 is arranged at one end of the second connecting block 24 and the first connecting block 15 corresponding to the stepping motor. The telescopic movement of the first hydraulic rod 26 can push the stepping motor and the connected first connecting pipes 16 and the second connecting pipes 17 to slide horizontally along the sliding rail 32. The horizontal sliding separates the first connecting pipes 16 and the second connecting pipes 17 from the corresponding first detection frame 18 and the second detection frame 19 before adjustment. The first hydraulic rod 26 is stored inside the sliding rail 32;

[0062] To facilitate the disassembly, installation and replacement of the first connecting pipes 16 and to facilitate the replacement of the first connecting pipes 16 with different diameters, so as to meet the detection requirements (since there are large differences in the diameters of the first connecting pipes 16 required for detection particles of different weights, the diameters of the first connecting pipes 16 can be made in different range intervals and installed and replaced as required). At the same time, it is also to facilitate the treatment of the residual liquid in the first connecting pipes 16, as Figure 7As shown in the figure, the first connecting block 15 includes a central shaft 151 and three connectors 152. The central shaft 151 is connected to the stepping motor for transmission. Each single first connecting pipe 16 is respectively installed on the three connectors 152. The connector 152 includes a sleeve 1521 and a connecting portion 1522. The sleeve 1521 is fixed on the side wall of the central shaft 151 through the connecting portion 1522. The first connecting pipe 16 is clamped inside the sleeve. The sleeve is semicircular. Both ends of the arc of the sleeve 1521 are slidably provided with openable and closable arc-shaped plates 1523. The sliding directions of the two arc-shaped plates 1523 are opposite. One end of the two arc-shaped plates 1523 is slidably arranged inside the sleeve 1521, and the other end is fixedly provided with a support block 1524. The inner side wall of the support block 1524 is concentric with and has the same diameter as the inner side wall of the sleeve 1521. Inside the connecting portion 1522, there are two sets of driving components 40 for controlling the opening and closing of the arc-shaped plates 1523 arranged in a mirror image. The driving component 40 includes a micro motor 41, a driving shaft 42, and two connecting rods 43. The two connecting rods 43 are respectively arranged at both ends of the driving shaft 42. The micro motor 41 is a double-shaft motor to drive the two connecting rods 43 simultaneously. The driving shaft 42 is rotationally connected to the micro motor 41. Driving disks are arranged at both ends of the driving shaft 42. One end of the connecting rod 43 is rotationally connected to the driving disk, and the other end of the connecting rod 43 is rotationally connected to the corresponding arc-shaped plate 1523 respectively. The rotation directions of the two micro motors 41 are opposite, so that the two connecting rods 43 drive the two arc-shaped plates 1523 to slide in opposite directions, thereby controlling the opening and closing of the two arc-shaped plates 1523. The above technical solution has a high degree of intelligence and a wider adaptation range.

[0063] Among them, in order to prevent the input pipe 14 from affecting the rotation and replacement of the first connecting pipe 16, a second hydraulic rod 31 is arranged on one side of the connection position between the input pipe 14 and the first connecting pipe 16. Both ends of the second hydraulic rod 31 are respectively fixedly connected to the outside of the detection box 3 and the input pipe 14. By contracting the input pipe 14, the input pipe 14 and the first connecting pipe 16 can be separated. The telescopic distance of the first hydraulic rod 26 is less than that of the second hydraulic rod 31, so as to avoid the rotation of the first connecting pipe 16 and the second connecting pipe 17 being affected by an object colliding with the first connecting pipe 16 and the second connecting pipe 17 after the second hydraulic rod 31 and the first hydraulic rod 26 contract simultaneously.

[0064] In order to prevent the liquid remaining inside the first connecting pipe 16 and the second connecting pipe 17 from spilling out and being inconvenient to collect when the first connecting pipe 16 and the second connecting pipe 17 are replaced, a collecting box 4 is arranged at the lower end of the detection box 3. A material dropping port 21 penetrating the lower end inside the detection box 3 is arranged on the side of the collecting box 4 facing the detection box 3. The liquid remaining inside the first connecting pipe 16 and the second connecting pipe 17 will drip and pass through the material dropping port 21 and fall inside the collecting box 4.

[0065] To facilitate the feeding of materials, a stirring barrel 5 is provided on one side of the front end of the detection box 3. A stirrer 10 is arranged inside the stirring barrel 5. The stirrer 10 can stir the liquid and the silica powder put into it, facilitating the conveying of materials. The stirring barrel 5 is hermetically connected to the output pipe 20, and the input pipe 14 and the stirring barrel 5 are hermetically connected through an electromagnetic circulation pump 11. By starting the electromagnetic circulation pump 11, the liquid can be extracted from the stirring barrel 5, detected in the detection box 3, and then returned to the inside of the stirring barrel 5;

[0066] Among them, as Figure 9 shown, one side of the stirrer 10 is embedded in the outer wall of the stirring barrel 5 and is slidably connected to the outer wall of the stirring barrel 5. A first threaded rod 27 is arranged through the middle of the sliding position of the stirrer 10 and the stirring barrel 5, and the outside of the first threaded rod 27 is in threaded cooperation with the penetrating position of the stirrer 10. When putting in the silica powder, after the stirrer 10 rotates through the first threaded rod 27 and is pushed longitudinally upward, the upper end exposed outside the stirring barrel 5 is convenient for putting in materials;

[0067] In addition, a bracket 6 is arranged on one side of the stirring barrel 5. A fixed frame 8 is arranged at the upper end of the bracket 6. An electronic scale 7 is arranged on the side of the bracket 6 facing the fixed frame 8. The electronic scale 7 can measure the weight of the materials placed inside the fixed frame 8;

[0068] As Figure 10 shown, in order to fix the container outside the silica powder and fix it inside the fixed frame 8 and on the upper end of the electronic scale 7, clamping blocks 30 are arranged at both ends inside the fixed frame 8. Second threaded rods 29 are arranged through both sides inside the clamping blocks 30, and the outside of the second threaded rods 29 is in threaded cooperation with the penetrating positions of the clamping blocks 30. After the weight of the container and the items inside the container is measured by the electronic scale 7, the second threaded rods 29 are driven to rotate. The rotation of the second threaded rods 29 can make a pair of clamping blocks 30 move relatively and clamp the outer wall of the container. The second threaded rods 29 are bidirectional threaded rods;

[0069] One side of the fixed frame 8 is rotatably connected to the upper end inside the bracket 6. By rotating, the fixed frame 8 can be turned over to pour the container clamped inside it, so that the container pours the silica powder inside it into the stirring barrel 5 for stirring.

[0070] To facilitate the cleaning of the stirring barrel 5 and the input pipe 14, the first connecting pipe 16, the first detection frame 18, the second connecting pipe 17, the second detection frame 19, and the output pipe 20 for transmission after measurement, the liquid for external cleaning can be sent into the stirring barrel 5 through the connecting external pipe 28. After the input pipe 14 and the first connecting pipe 16 are separated, the liquid in the stirring barrel 5 and the materials transmitted during the previous test pass through the material dropping port 21 and are discharged into the collection box 4;

[0071] As Figure 1 、Figure 2 and Figure 11 As shown in Figure 11 , a touch terminal 2 is provided at the front end of the detection box 3. The touch terminal 2 is built-in with a detection system for assisting in the detection of the particle size distribution regulation of ultra-fine high-purity spherical silica powder. The detection system includes a reset module, a weight extraction module, a calculation module, an adjustment module, and a detection module, where: The weight extraction module is used to extract the weight of the silica powder detected at the position of the electronic scale 7. When the container is placed separately on the surface of the electronic scale 7, it does not need to be detected by the electronic scale 7. However, after the container is placed on the surface of the electronic scale 7, when the user manually puts the silica powder into the container placed on the upper end of the electronic scale 7, the change in weight is detected by the electronic scale 7, and the change in weight is the weight of the silica powder;

[0072] The calculation module is used to calculate through a formula, match the data extracted by the weight extraction module, judge which caliber of the first connecting pipe 16 and the second connecting pipe 17 to use, judge the number of clockwise rotation steps of the stepping motor at one end of the second connecting block 24 and the first connecting block 15, and adjust the positions of the first connecting pipe 16 and the second connecting pipe 17 according to the calculation results, and directly adjust the flow rate by adjusting the caliber of the connection between the first connecting pipe 16 and the second connecting pipe 17 and the input pipe 14, the first detection frame 18, and the second detection frame 19, so as to avoid the material flow rate being too slow to be detected when more materials are put in, and also avoid the material flow rate being too fast to be detected when less materials are put in;

[0073] The calculation formula in the above calculation module is:

[0074]

[0075] In the above formula, Hx is the unit step function:

[0076]

[0077] In the above calculation formula, W is the weight of the material to be measured extracted by the weight extraction module, with the unit of g; W1 is the demarcation threshold of the weight of the material to be measured corresponding to the large-caliber first connecting pipe 16 and the second connecting pipe 17 and the medium-caliber first connecting pipe 16 and the second connecting pipe 17, with the unit of g; W2 is the demarcation threshold of the weight of the material to be measured corresponding to the medium-caliber first connecting pipe 16 and the second connecting pipe 17 and the small-caliber first connecting pipe 16 and the second connecting pipe 17, with the unit of g;

[0078] θ1 is the angle of the stepping motor corresponding to the large-caliber first connecting pipe 16 and the second connecting pipe 17, with the unit of degree; θ2 is the angle of the stepping motor corresponding to the medium-caliber first connecting pipe 16 and the second connecting pipe 17, with the unit of degree; θ3 is the angle of the stepping motor corresponding to the small-caliber first connecting pipe 16 and the second connecting pipe 17, with the unit of degree;

[0079] α is the step angle of the stepping motor, with the unit of degree / step;

[0080] N is the number of pulses required for the drive motor, with the unit of step. The calculated N can give a start signal to the adjustment module to adjust the angles of the first connecting pipe 16 and the second connecting pipe 17, so that the calibers of the first connecting pipe 16 and the second connecting pipe 17 correspond to the weight of the transmitted material.

[0081] For example, when the weight of silicon micropowder in the measuring container is 30 g, the demarcation threshold of the weight of the material to be measured corresponding to the large-caliber connecting pipe and the medium-caliber connecting pipe is 50 g, the demarcation threshold of the weight of the material to be measured corresponding to the medium-caliber connecting pipe and the small-caliber connecting pipe is 100 g, the angle of the stepping motor corresponding to the large-caliber connecting pipe is 0°, the angle of the stepping motor corresponding to the medium-caliber connecting pipe is 120°, and the angle of the stepping motor corresponding to the small-caliber connecting pipe is 240°; when the step angle of the stepping motor corresponding to the first connecting block 15 and the second connecting block 24 is 1.8 degrees / step;

[0082] The data corresponding to the symbols in the formula are W = 30; W1 = 50; W2 = 100; θ1 = 0; θ2 = 120; θ3 = 240; α = 1.8;

[0083] Substitute the numerical values corresponding to the symbols into the formula, and the calculation results are as follows:

[0084]

[0085] According to the unit step function of H(x), the further calculation results are as follows:

[0086]

[0087] It can be known through calculation that when the weight of the input silicon micropowder is 30 g, the number of pulses required for the stepping motor is 0 steps;

[0088] For example, when the weight of silicon micropowder in the measuring container is 80 g, the demarcation threshold of the weight of the material to be measured corresponding to the large-caliber connecting pipe and the medium-caliber connecting pipe is 50 g, the demarcation threshold of the weight of the material to be measured corresponding to the medium-caliber connecting pipe and the small-caliber connecting pipe is 100 g, the angle of the stepping motor corresponding to the large-caliber connecting pipe is 0°, the angle of the stepping motor corresponding to the medium-caliber connecting pipe is 120°, and the angle of the stepping motor corresponding to the small-caliber connecting pipe is 240°; when the step angle of the stepping motor corresponding to the first connecting block 15 and the second connecting block 24 is 1.8 degrees / step;

[0089] The data corresponding to the symbols in the formula are W = 80; W1 = 50; W2 = 100; θ1 = 0; θ2 = 120; θ3 = 240; α = 1.8;

[0090] Substitute the numerical values corresponding to the symbols into the formula, and the calculation results are as follows:

[0091]

[0092] The further calculation results based on the unit step function of H(x) are as follows:

[0093]

[0094] Through calculation, it can be known that when the weight of the silica fume input is 80 g, the number of pulses required for the stepping motor is 67 steps;

[0095] The adjustment module is used to perform rotational adjustment on the first connection block 15 and the second connecting pipe 17 according to the data calculated by the calculation module. Before adjustment, a contraction signal is first given to the second hydraulic rod 31 to separate the input pipe 14 from the first connecting pipe 16, and then two first hydraulic rods 26 are started simultaneously, so that the first connecting pipe 16 is separated from the first detection frame 18, and the second connecting pipe 17 is simultaneously separated from the first detection frame 18 and the second detection frame 19. After separation, according to the calculation of the calculation module, the number of pulse steps of the stepping motor at the upper end of the second connection block 24 and the first connection block 15 is calculated, and a start signal corresponding to the number of pulse steps is given to the stepping motor. After rotating and adjusting the angles of the second connecting pipe 17 and the first connecting pipe 16, the pulse motor fixes the second connecting pipe 17 and the first connecting pipe 16 at the adjusted angles, and then an extension signal is given to the first hydraulic rod 26 and the second hydraulic rod 31 to push and restore the connection between the input pipe 14, the first connecting pipe 16, the first detection frame 18, the second connecting pipe 17 and the second detection frame 19;

[0096] The detection module is used to start the digital camera 12 to take pictures and extract data of the liquid flowing at the position of the second detection frame 19 and the particles in the liquid, and is also used to start the monochromatic laser source 13 to perform characterization detection on the liquid flowing at the position of the first detection frame 18 and the particles in the liquid through the first detection frame 18. The detection of the two positions completes the detection of the regulation of the particle size distribution of the silica fume;

[0097] The reset module is used to, after the detection is completed and the inside of the device is cleaned, rotate the adjusted first connecting pipe 16 and the first connection block 15 in the opposite direction of the number of steps adjusted by the adjustment module to restore to the state before adjustment, which is convenient for subsequent reuse and adjust the first connecting pipe 16 and the first connection block 15 with corresponding calibers according to the amount of materials input subsequently.

[0098] In order to facilitate the rapid and intelligent selection of the matching first connecting pipe 16 after detecting the weight of the silica fume at the position of the electronic scale 7, the present invention is based on the weight extraction module, the calculation module and the adjustment module, and adopts the following steps to determine the target liquid flow caliber and control the rotation of the stepping motor to drive the first hydraulic rod 26 to rotate the first connection block 15 to the first connecting pipe 16 corresponding to the target liquid flow caliber:

[0099] The liquid flow diameters of the three preset first connecting pipes 16 are respectively a first diameter, a second diameter, and a third diameter;

[0100] The weight extraction module performs the following steps:

[0101] Based on the current weight value of the silicon micropowder weighed by the electronic scale 7, the silicon micropowder is put into the stirring barrel 5 and stirred to form a flowing liquid, and a preset flow-through time for the whole flow-through process from the input pipe 14 flowing through the first connecting pipe 16, the first detection frame 18, the second connecting pipe 17, the second detection frame 19 and then flowing out from the output pipe 20 is set;

[0102] The calculation module performs the following steps:

[0103] Based on the length and preset flow-through time of the flowing liquid in the whole flow-through process, the estimated flow velocity of the flowing liquid is calculated;

[0104] Based on the current weight value, density value and preset flow-through time of the silicon micropowder, the flow rate of the flowing liquid is calculated. The calculation formula for the flow rate of the flowing liquid is as follows:

[0105]

[0106] Among them, Q represents the flow rate of the flowing liquid, in cubic meters per second, m represents the current weight value of the silicon micropowder, in kilograms, ρ represents the density value of the silicon micropowder, and t represents time, in seconds;

[0107] Based on the flow rate and estimated flow velocity of the flowing liquid, the estimated pipeline cross-sectional area value of the first connecting pipe 16 is calculated;

[0108] According to the estimated pipeline cross-sectional area value, the estimated target diameter value of the first connecting pipe 16 is calculated. According to the estimated target diameter value of the first connecting pipe (16), a liquid flow diameter closest to it is selected as the target liquid flow diameter;

[0109] The adjustment module performs the following steps: After obtaining the target liquid flow diameter of the first connecting pipe 16, the adjustment module controls the stepping motor to move, and drives the first hydraulic rod 26 to rotate the first connecting block 15 to the first connecting pipe 16 corresponding to the target liquid flow diameter, and then respectively connect the two ends of the first connecting pipe 16 with the corresponding diameter to the input pipe 14 and the first detection frame 18 in a snap-fit manner.

[0110] In the above technical solution, the calculation method of the estimated flow velocity is that the length of the flowing liquid in the whole flow-through process is divided by the preset flow-through time, and the length of the whole flow-through process is converted into a straight-line length for calculation;

[0111] In the above technical solution, the estimated pipeline cross-sectional area value of the first connecting pipe 16 can be obtained by dividing the flow rate of the flowing liquid by the estimated flow velocity;

[0112] In the above technical solution, the estimated target diameter value of the first connecting pipe 16 can be calculated according to the following formula: where d is the target diameter value and A is the estimated pipeline cross-sectional area value;

[0113] The principle and effect of the above technical solution are as follows: During the detection process, since the weights of the silica fume are different, different calibers of the first connecting pipe 16 need to be selected for silica fume of different weights each time. If judged manually, there will be errors and it will affect the efficiency of the process. In the present invention, the weight extraction module receives in real time the weight value weighed by the electronic scale 7, and then the calculation module determines the target liquid flow caliber according to the calculation steps. The value of the target liquid flow caliber will be variable and irregular. During the selection process, the adjustment module stores the values of the first caliber, the second caliber, and the third caliber preset in the adjustment module, and compares them with the value of the obtained target liquid flow caliber, and selects the first connecting pipe 16 with the caliber closest to the value of the target liquid flow caliber. At the same time, the adjustment module controls the stepping motor to rotate, driving the first hydraulic rod 26 to rotate the first connecting block 15 to the first connecting pipe 16 corresponding to the target liquid flow caliber. The above technical solution improves the intelligence and accuracy and improves the work efficiency.

[0114] Working principle of the present invention: When using the device to detect the particle size distribution of silica powder, place the container inside the fixed frame 8 and on top of the electronic scale 7. Start the electronic scale 7, place the material to be detected in the container, and use the electronic scale 7 to detect the weight of the placed material. Based on the weight, determine what diameter of pipeline is needed. Start the two first connecting blocks 15. The two first connecting blocks 15 respectively drive the corresponding connected first connecting blocks 15 and the second connecting pipes 17 to rotate, and rotate to adjust the required angle. After adjusting the angle, start the first hydraulic rod 26. The elongation of the first hydraulic rod 26 can push the first connecting block 15 to connect with the first detection frame 18, and the second connecting pipe 17 is pushed to connect with the first detection frame 18 and the second detection frame 19. Start the second hydraulic rod 31. The second hydraulic rod 31 pushes the input pipe 14 to connect with the first connecting pipe 16. The first threaded rod 27 rotates to make the stirrer 10 move longitudinally to expose the upper end of the stirring barrel 5. The second threaded rod 29 rotates to make the clamp 30 clamp the container. The fixed frame 8 flips towards the stirring barrel 5 at the upper end of the bracket 6 and pours the silica powder. The stirrer 10 resets and agitates the liquid and silica powder inside the stirring barrel 5. The electromagnetic circulation pump 11 pumps and sends the material and liquid inside the stirring barrel 5 into the input pipe 14. The liquid inside the input pipe 14 flows along the first connecting pipe 16, the first detection frame 18, the second connecting pipe 17, the second detection frame 19, and the output pipe 20 and finally flows back into the stirring barrel 5. When the particles and liquid flow to the positions of the first detection frame 18 and the second detection frame 19, they are respectively photographed and detected by the monochromatic laser source 13 and the digital camera 12.

[0115] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0116] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder, comprising a base (1), one side of the upper end of the base (1) is provided with a detection box (3), characterized in that, At the middle position of the detection box (3), a first detection frame (18) and a second detection frame (19) are longitudinally arranged in sequence. One end of the first detection frame (18) is provided with an input pipe (14), and one end of the second detection frame (19) is provided with an output pipe (20). Three first connecting pipes (16) with gradually increasing liquid flow diameters are arranged around between the input pipe (14) and the first detection frame (18). At the other end between the first detection frame (18) and the second detection frame (19), three second connecting pipes (17) with gradually increasing liquid flow diameters are arranged. On one side of the front end of the detection box (3), a stirring barrel (5) and a bracket (6) are arranged in sequence. On the upper end of the bracket (6), an electronic scale (7) and a fixing frame (8) are arranged in sequence.

2. The detection device for regulating the particle size distribution of an ultra-fine high-purity spherical silica powder according to claim 1, characterized in that, The three first connecting pipes (16) are fixedly connected through a first connecting block (15). The three second connecting pipes (17) are fixedly connected through a second connecting block (24). A stepping motor is arranged at one end of both the second connecting block (24) and the first connecting block (15). A sliding rail (32) is arranged at the upper end inside the detection box (3). The outer wall of the stepping motor slides and is embedded inside the sliding rail (32). A first hydraulic rod (26) is arranged at the end of the second connecting block (24) and the first connecting block (15) corresponding to the stepping motor.

3. The detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder according to claim 2, wherein, A second hydraulic rod (31) is arranged on one side of the connection position between the input pipe (14) and the first connecting pipe (16), and both ends of the second hydraulic rod (31) are fixedly connected to the outside of the detection box (3) and the input pipe (14) respectively.

4. The detection device for regulating the particle size distribution of ultrafine high-purity spherical silica powder according to claim 3, wherein, The first connecting block (15) includes a central shaft (151) and three connectors (152). The connector (152) includes a sleeve (1521) and a connecting portion (1522). Two openable and closable arc-shaped plates (1523) are arranged on the sleeve (1521). Inside the connecting portion (1522), two groups of driving components (40) for controlling the opening and closing of the two arc-shaped plates (1523) are arranged in a mirror image. The driving component (40) includes a micro motor (41), a driving shaft (42), and two connecting rods (43). The driving shaft (42) is rotationally connected to the micro motor (41). Driving discs are arranged at both ends of the driving shaft (42). One end of the connecting rod (43) is rotationally connected to the driving disc, and the other end of the driving rod is rotationally connected to the corresponding arc-shaped plate (1523).

5. The detection device for regulating the particle size distribution of an ultra-fine high-purity spherical silica powder according to claim 1, wherein, A stirrer (10) is arranged inside the stirring barrel (5), and one side of the stirrer (10) is embedded in and slidably connected to the outer wall of the stirring barrel (5).

6. The detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder according to claim 1, characterized in that, Clamping blocks (30) are arranged at both ends inside the fixing frame (8). Second threaded rods (29) penetrate through both sides inside the clamping blocks (30), and the outer part of the second threaded rod (29) is in threaded cooperation with the penetrating position of the clamping blocks (30).

7. The detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder according to claim 6, characterized in that, One side of the fixing frame (8) is rotationally connected to the upper end inside the bracket (6).

8. The detection device for regulating the particle size distribution of ultrafine high-purity spherical silica powder according to claim 3, characterized in that, A collection box (4) is provided at the lower end of the detection box (3), and a blanking port (21) penetrating through the lower end inside the detection box (3) is provided on the side of the collection box (4) facing the detection box (3).

9. The detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder according to claim 8, characterized in that, A touch terminal (2) is provided at the front end of the detection box (3). The touch terminal (2) is built-in with a detection system for assisting in the detection of the particle size distribution regulation of ultra-fine high-purity spherical silica powder, which is composed of a reset module, a weight extraction module, a calculation module, an adjustment module, and a detection module. Among them: The weight extraction module is used to extract the weight of the silica powder detected at the position of the electronic scale (7). The calculation module is used to calculate through a formula and, in combination with the data extracted by the weight extraction module, determine the number of clockwise rotation steps of the stepping motor at one end of the second connecting block (24) and the first connecting block (15). The adjustment module is used to perform rotational adjustment on the first connecting block (15) and the second connecting pipe (17) according to the data calculated by the calculation module, and give start signals to the second hydraulic rod (31), two first hydraulic rods (26), the second connecting block (24), and the stepping motor at the upper end of the first connecting block (15). The detection module is used to photograph and extract data on the liquid flowing at the position of the second detection frame (19) and the particles in the liquid, and perform characterization detection on the liquid flowing at the position of the first detection frame (18) and the particles in the liquid through the first detection frame (18). The reset module is used to restore the first connecting pipe (16) and the first connecting block (15) to the state before adjustment after the detection is completed and the inside of the device is cleaned.

10. The detection device for regulating the particle size distribution of ultra-fine high-purity spherical silica powder according to claim 9, characterized in that, Based on the weight extraction module, the calculation module, and the adjustment module, the following steps are used to determine the target liquid flow diameter and control the rotation of the stepping motor to drive the first hydraulic rod (26) to rotate the first connecting block (15) to the first connecting pipe (16) corresponding to the target liquid flow diameter: It is preset that the liquid flow diameters of the three first connecting pipes (16) are the first diameter, the second diameter, and the third diameter respectively. The weight extraction module performs the following steps: Based on the current weight value of the silica powder weighed by the electronic scale (7), the silica powder is put into the stirring barrel (5) and stirred to form a flowing liquid, and a preset flowing time for the entire flowing process from the input pipe (14) flowing through the first connecting pipe (16), the first detection frame (18), the second connecting pipe (17), the second detection frame (19), and then flowing out from the output pipe (20) is set. The calculation module performs the following steps: Based on the length of the flowing liquid in the entire flowing process and the preset flowing time, the estimated flow velocity of the flowing liquid is calculated. Based on the current weight value, density value, and preset flowing time of the silica powder, the flow rate of the flowing liquid is calculated. The calculation formula for the flow rate of the flowing liquid is as follows: Among them, Q represents the flow rate of the flowing liquid, in cubic meters per second, m represents the current weight value of the silica powder, in kilograms, ρ represents the density value of the silica powder, and t represents time, in seconds. Based on the flow rate of the flowing liquid and the estimated flow velocity, the estimated pipe cross-sectional area value of the first connecting pipe (16) is calculated. Calculate the estimated target diameter value of the first connecting pipe (16) according to the estimated pipe cross-sectional area value, and select the liquid flow diameter closest to it as the target liquid flow diameter; The adjustment module performs the following steps: After obtaining the target liquid flow diameter of the first connecting pipe (16), the adjustment module controls the stepping motor to move, and drives the first hydraulic rod (26) to rotate the first connecting block (15) to the first connecting pipe (16) corresponding to the target liquid flow diameter.

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