A post-processing silicon carbide micropowder grading and packaging system and method of use

Abstract

The application discloses a kind of processing silicon carbide micro powder grading packaging system and use method, and the application belongs to silicon carbide micro powder grading packaging technical field, and it includes operating table and the controller being set to operating table inside, the top of the operating table is provided with placing box, the top of the placing box is provided with spiral feeding assembly, the spiral feeding assembly includes the fixed connection of connection frame with the top of placing box, the top of the connection frame is equipped with feed inlet, the side of the connection frame is equipped with first motor, the output of the first motor is provided with first transmission assembly, the inside of the placing box is provided with knock component, the knock component includes two groups of support rods being connected with the inside of placing box by bearing, the device solves the current equipment screening precision low, cannot self-adaptively optimize operating parameter, so that subsequent grading process precision is insufficient, different particle size micro powder mixes, and it is difficult to realize grading packaging problem.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of silicon carbide micro-powder grading packaging, and particularly relates to a silicon carbide micro-powder grading packaging system after processing and a use method. BACKGROUND

[0002] In the field of grading packaging of silicon carbide micro-powder after processing, the grading packaging system plays a key role in product quality and production efficiency. The traditional grading packaging process of silicon carbide micro-powder has many problems. In the feeding link, the lack of precise control often leads to material accumulation or material breakage, affecting the continuity and stability of the subsequent process, and different particle sizes of the material are easily mixed, affecting the accuracy of grading packaging.

[0003] In the traditional equipment, a large number of fine particles that meet the requirements cannot pass through the screen holes due to aggregation, which reduces the accuracy and efficiency of screening. The state of the material retained on the screen lacks intelligent sensing and adjusting ability, and the subsequent grading process lacks precision. Different particle sizes of the micro-powder are easily mixed, resulting in poor uniformity of the final product, and it is difficult to achieve accurate grading and automatic packaging with high quality and high efficiency. This phenomenon has become a problem that personnel in the field are eager to solve. SUMMARY

[0004] The present application aims to solve the problems raised in the background art by providing a silicon carbide micro-powder grading packaging system after processing and a use method.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a kind of after processing silicon carbide micro powder grading packaging system, including operation platform and the controller being set to operation platform interior, the top of the operation platform is provided with placing box, the top of the placing box is provided with screw feeding assembly, the screw feeding assembly includes the connecting frame being fixedly connected with the top of placing box, the top of the connecting frame is equipped with feed inlet, one side of the connecting frame is equipped with first motor, the output of the first motor is provided with first transmission assembly, the inside of the placing box is provided with knock component, the knock component includes two groups of support rods being connected with the inside of placing box by bearing, second transmission assembly is connected between the end of two groups of support rods located in the same side, the knock component is provided with screening component below, the top of the operation platform is installed with airflow dispersion component, the airflow dispersion component includes first discharge pipe, the output of the first discharge pipe is sequentially provided with first classification zone, second classification zone and third classification zone from left to right, the bottom of the first classification zone, second classification zone and third classification zone is provided with storage tank, the airflow dispersion component further includes induced draft fan being fixedly installed on the top of operation platform, the air outlet pipe of the induced draft fan is connected with fluidized bed, the air outlet pipe of the induced draft fan is also connected with connecting pipe, the other end of the connecting pipe is connected with placing box, valve is provided at the connecting pipe, the top of the operation platform is installed with feed pump, the bottom of one side of the fluidized bed is connected with one end of the feed pump, the first discharge pipe is arranged at the top of the other side of fluidized bed.

[0006] The present application further illustrates that the output of the first motor is provided with the first transmission assembly, the first transmission assembly includes the first belt pulley connected with the output of the first motor, the first belt body is drivingly connected to the outside of the first belt pulley, and the other end of the first belt body is drivingly connected to the second belt pulley.

[0007] The present application further illustrates that the inside of the placing box is provided with the knock component, and one group of the support rods is drivingly connected with the second belt pulley.

[0008] The present application further illustrates that the second transmission assembly is connected between the end of two groups of support rods located in the same side, the third belt pulley is fixedly connected with one end of one group of support rods, the second belt body is drivingly connected to the outer surface of the third belt pulley, the fourth belt pulley is drivingly connected to the other end of the second belt body, the inside of the fourth belt pulley is fixedly connected with one end of the adjacent support rod, the cam is fixedly connected to the outer surface of two groups of support rods located in the inside of the placing box, and the stirring rod is arranged on the outer surface of both sides of the cam.

[0009] The application further discloses that the screening assembly comprises a chute opened on both sides of the placing box, a sliding rod is fixedly connected to the inside of the chute, a sliding block is slidably connected to the outer top end of the sliding rod, a screening plate is hinged to one side of the sliding block, and a first visual sensor is arranged on the top of the screening plate.

[0010] The application further discloses that the bottom of the sliding block is fixedly connected with a connecting rod, the bottom of the connecting rod is fixedly connected with a sliding block, the sliding block is sleeved on the outside of the sliding rod, the bottom of the sliding block is fixedly connected with a supporting spring at the bottom of the chute, the supporting spring is sleeved on the outer surface of the sliding rod, and an electric push rod is hinged between the sliding block and the screening plate.

[0011] The application further discloses that a second motor is arranged below the supporting rod on the outer surface of the placing box, a first scattering roller is connected to the output end of the second motor, a second scattering roller is arranged on one side of the first scattering roller, a third transmission assembly is arranged between the first scattering roller and the second scattering roller, the third transmission assembly comprises a fifth belt pulley fixedly connected to one end of the outer surface of the first scattering roller, a third belt body is connected to the outside of the fifth belt pulley, a sixth belt pulley is transmissionally connected to one end of the third belt body, a rotating speed sensor is arranged on the outside of the second motor, a feeding pump is mounted on the top of the operation table, and one end of the feeding pump is connected to the top of the placing box.

[0012] The application further discloses that an airflow scattering assembly is mounted on the top of the operation table, the airflow scattering assembly comprises an air drafter fixedly mounted on the top of the operation table, a fluidized bed is connected to the air outlet pipe of the air drafter, one end of a connecting pipe is connected to the air outlet pipe of the air drafter, the other end of the connecting pipe is connected to the placing box, a valve is arranged at the connecting pipe, the bottom of one side of the fluidized bed is connected to one end of the feeding pump, and the first discharge pipe is arranged on the top of the other side of the fluidized bed.

[0013] The application further discloses that the output end of the first discharge pipe is sequentially provided with a first classification zone, a second classification zone and a third classification zone from left to right, and the bottom outer surfaces of the first classification zone, the second classification zone and the third classification zone are all provided with granularity detection sensors.

[0014] In addition, in order to achieve the above-mentioned purpose, the application also provides a use method of the post-processing silicon carbide micro-powder grading and packaging system, which comprises the following specific operation methods.

[0015] Step one: feeding, the silicon carbide micro-powder is added from the feeding port of the spiral feeding assembly, the controller starts the first motor to drive the spiral shaft to rotate, the micro-powder is pushed along the inside of the connecting frame to the bottom discharge port through the pushing force of the spiral shaft, the quantitative and stable conveying of the material is realized, and the accumulation or material breakage is avoided;

[0016] Step 2: Preliminary dispersion and vibrating screening. The first motor drives the two sets of support rods of the striking component to rotate synchronously through the first and second transmission components. This causes the stirring rod in the striking component to initially disperse the material and simultaneously strike the screening plate, thus achieving vibrating screening.

[0017] Step 3: Screening and detection. The diameter and area of ​​the retained material are detected by the first vision sensor, and the speed of the first motor, the speed of the second motor, and the angle of the screening plate are adjusted accordingly.

[0018] Step 4: Material airflow dispersion. The feed pump delivers the material into the fluidized bed of the airflow dispersion component. The induced draft fan provides high-pressure airflow from the bottom of the fluidized bed. The material is fluidized and suspended under the impact of the airflow. The buoyancy and shear force of the airflow further break up the agglomeration, so that the particles move upward with the airflow in a monodisperse state, realizing the airflow separation of agglomerated particles.

[0019] Step 5: After fluidization, the material is carried by the airflow through the first discharge pipe into the three-stage grading zone, thereby achieving multi-stage grading. Finally, the graded material enters the storage tanks at the bottom of the three-stage grading zone for graded collection and packaging.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention uses materials that enter from the screw feeder and are then subjected to a series of pretreatment processes, including tapping and stirring, sieving, and double roller dispersion, to remove large impurities and achieve initial dispersion. Subsequently, fluidized deep dispersion is achieved in the airflow dispersion component, and finally, the materials are precisely classified by particle size through a three-stage grading zone to obtain silicon carbide micro powder of different particle size grades, thus achieving the effect of rapid grading and packaging of products of different grades. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is the present invention. Figure 1 Overall rear view structural schematic diagram;

[0024] Figure 3 This is the present invention. Figure 1 Overall upward structural diagram;

[0025] Figure 4 This is a cross-sectional structural diagram of the screening component of the present invention;

[0026] Figure 5 This is the present invention. Figure 4 A magnified structural diagram of the region at point A in the middle;

[0027] Figure 6 is a schematic view of the rear view structure of the present application Figure 4 ;

[0028] Figure 7 is a schematic view of the enlarged area at B in the present application Figure 6 .

[0029] In the figure: 1, operation table; 2, placing box; 3, spiral feeding assembly; 301, connecting frame; 302, feeding port; 303, first motor; 304, spiral shaft; 305, discharging port; 4, first transmission assembly; 401, first belt pulley; 402, first belt body; 403, second belt pulley; 5, knocking assembly; 501, support rod; 502, cam; 503, stirring rod; 6, second transmission assembly; 601, third belt pulley; 602, second belt body; 603, fourth belt pulley; 7, screening assembly; 701, chute; 702, slide rod; 703, sliding block; 704, screening plate; 705, connecting rod; 706, sliding block; 707, support spring; 708, electric push rod; 709, first visual sensor; 8, second motor; 9, first dispersion roller; 10, second dispersion roller; 11, third transmission assembly; 1101, fifth belt pulley; 1102, third belt body; 1103, sixth belt pulley; 1104, rotating speed sensor; 12, material conveying pump; 13, airflow dispersion assembly; 1301, air blower; 1302, fluidized bed; 1303, first discharging pipe; 14, connecting pipe; 15, first classification zone; 16, second classification zone; 17, third classification zone; 18, granularity detection sensor; 19, storage tank. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be further described in detail below in combination with preferred embodiments and the drawings thereof. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work, fall within the protection scope of the present application.

[0031] Please refer to Figures 1-7The application provides the technical scheme: including an operation table 1 and a controller arranged in the operation table 1, a placing box 2 is arranged on the top of the operation table 1, a spiral feeding assembly 3 is arranged on the top of the placing box 2, the spiral feeding assembly 3 comprises a connecting frame 301 fixedly connected with the top of the placing box 2, a feeding port 302 is arranged on the top of the connecting frame 301, a first motor 303 is arranged on one side of the connecting frame 301, the first motor 303 is supported and fixed to the outer wall of the placing box 2 through a fixing frame, not shown in the figure, a spiral shaft 304 is connected to the output end of the first motor 303, and a discharging port 305 is arranged on the bottom of the connecting frame 301.

[0032] Silicon carbide powder is added from the feeding port 302 of the connecting frame 301, the controller controls the first motor 303 to start and drive the spiral shaft 304 to rotate, the spiral shaft 304 pushes the powder along the inside of the connecting frame 301 to the discharging port 305 at the bottom through the rotating thrust, realizes quantitative conveying of the material, can effectively control the feeding speed and avoid material accumulation or material breakage.

[0033] As shown in Figure 1 , Figure 2 , the output end of the first motor 303 is provided with a first transmission assembly 4, the first transmission assembly 4 comprises a first belt pulley 401 connected with the output end of the first motor 303, the outside of the first belt pulley 401 is drivingly connected with a first belt body 402, and the other end of the first belt body 402 is drivingly connected with a second belt pulley 403.

[0034] The first transmission assembly 4 is driven by the first motor 303, so that the power of the first transmission assembly 4 drives the first belt body 402 to rotate, and then the power is transmitted to the second belt pulley 403, so that the second belt pulley 403 rotates, so that a single power source drives multiple assemblies to operate, the setting of independent power sources is reduced, and then the energy consumption is saved.

[0035] As shown in Figure 3 , Figure 4As shown, the inside of the placing box 2 is provided with a knocking assembly 5 for dispersing particles for pretreatment for subsequent screening, the knocking assembly 5 includes two groups of support rods 501 connected with the inside of the placing box 2 through bearings, one group of support rods 501 is in transmission connection with the second belt pulley 403, the two groups of support rods 501 are connected between the same side ends through a second transmission assembly 6, the second transmission assembly 6 includes a third belt pulley 601 fixedly connected with one end of one group of support rods 501, the outer surface of the third belt pulley 601 is in transmission connection with a second belt body 602, the other end of the second belt body 602 is in transmission connection with a fourth belt pulley 603, the inside of the fourth belt pulley 603 is fixedly connected with the end of the adjacent support rod 501, the outer surfaces of the two groups of support rods 501 located inside the placing box 2 are fixedly connected with cams 502, and the outer surfaces of the two sides of the cam 502 are provided with stirring rods 503;

[0036] The output end of the first motor 303 drives the first belt pulley 401 to rotate at the same time, the power is transmitted to the second belt pulley 403 through the friction transmission of the first belt body 402, and then the support rods 501 of the knocking assembly 5 are driven to rotate, the two groups of support rods 501 rotate under the drive of the first transmission assembly 4, the cams 502 on the outer surfaces thereof rotate with the shaft, and the stirring rods 503 on the outer surfaces of the cams 502 can mechanically stir the micro powder to further disperse the particles.

[0037] As shown in the figure, Figure 5 The lower part of the knocking assembly 5 is provided with a screening assembly 7 for vibrating coarse screening of the micro powder, the screening assembly 7 includes a sliding groove 701 opened on both sides in the inside of the placing box 2, a sliding rod 702 is fixedly connected in the inside of the sliding groove 701, a sliding block 703 is slidingly connected to the outer top end of the sliding rod 702, a sieve plate 704 is hinged to one side of the sliding block 703, a first visual sensor 709 is arranged on the top of the sieve plate 704, the first visual sensor 709 captures image information of a target scene through an optical system, and then realizes detection, identification or measurement of the target through photoelectric conversion and signal processing, which is used to identify the size and accumulation area of the particle size, a connecting rod 705 is fixedly connected to the bottom of the sliding block 703, a sliding block 706 is fixedly connected to the bottom of the connecting rod 705, the sliding block 706 is sleeved on the outside of the sliding rod 702, a supporting spring 707 is fixedly connected to the bottom of the sliding block 706 and the bottom of the sliding groove 701, the supporting spring 707 is sleeved on the outer surface of the sliding rod 702, and an electric push rod 708 is hinged between the sliding block 706 and the sieve plate 704;

[0038] The sieve plate 704 is in sliding connection with the sliding rod 702 through the sliding block 703, the bottom of the sliding block 706 is fixedly connected with the bottom of the sliding groove 701 through the supporting spring 707, and a plurality of sieve holes with the same diameter are arranged in the sieve plate 704. When the cam 502 rotates, one end of the cam 502 with the diameter contacts the sieve plate 704, so as to push the sieve plate 704 to move downward. When the cam 502 is not in contact with the sieve plate 704, the supporting spring 707 pushes the sliding block 706 and the sieve plate 704 to reset, so that the sieve plate 704 vibrates up and down, and the material screening is accelerated. It should be noted that the side with the diameter of the cam 502 is arranged as a plane, and fine particles can directly fall into the bottom of the placing box 2, and coarse particles stay above the sieve plate 704. The electric push rod 708 can be telescopic to adjust the inclination angle of the sieve plate 704. The electric push rod 708 is remotely started to extend or contract, so as to control the inclination angle of the sieve plate 704, and then adjust the discharging speed.

[0039] As shown in Figure 4 , Figure 7 , the second motor 8 is arranged below the supporting rod 501 on the outer surface of the placing box 2. The output end of the second motor 8 is connected with the first dispersion roller 9. The first dispersion roller 9 is provided with the second dispersion roller 10 on one side. The third transmission assembly 11 is arranged between the first dispersion roller 9 and the second dispersion roller 10. The third transmission assembly 11 comprises a fifth belt pulley 1101 fixedly connected with one end of the outer surface of the first dispersion roller 9. The fifth belt pulley 1101 is externally connected with a third belt body 1102. One end of the third belt body 1102 is drivingly connected with a sixth belt pulley 1103. The outer portion of the second motor 8 is provided with a rotating speed sensor 1104. The top of the operation table 1 is provided with a material conveying pump 12. One end of the material conveying pump 12 is connected with the top of the placing box 2.

[0040] The second motor 8 is started by the controller. The output end of the second motor 8 drives the first dispersion roller 9 to rotate. At the same time, the second dispersion roller 10 is driven to rotate synchronously through the third transmission assembly 11. The screened material falls between the two dispersion rollers, and the residual small agglomerates are completely dispersed into single particles, so as to ensure that the material entering the subsequent airflow system is uniformly dispersed. The dispersed material is discharged through the material conveying pump 12.

[0041] As shown in Figure 1 , Figure 2As shown, the top of the operation table 1 is provided with an airflow dispersion assembly 13 for fluidizing and dispersing the fine powder, so that the fine powder is separated and the fine powder particles are prevented from agglomeration. The airflow dispersion assembly 13 includes an air blower 1301 fixedly installed on the top of the operation table 1. The air outlet pipe of the air blower 1301 is connected with a fluidized bed 1302. The air outlet pipe of the air blower 1301 is connected with one end of a connecting pipe 14. The other end of the connecting pipe 14 is connected with the placing box 2. The connecting pipe 14 is provided with a valve. The bottom of one side of the fluidized bed 1302 is provided with a connection with one end of a material conveying pump 12. The top of the other side of the fluidized bed 1302 is provided with a first discharge pipe 1303.

[0042] The air blower 1301 is used to provide high-pressure airflow. The airflow is sent to the bottom of the fluidized bed 1302 through the air outlet pipe. The fine powder input into the fluidized bed 1302 by the material conveying pump 12 is suspended in the bed in a fluidized state under the impact of the airflow. When the airflow passes through the gap between the particles, the agglomeration is further broken by the buoyancy and shear force, so that the particles move upward with the airflow in a monodisperse state, thereby realizing airflow separation of the agglomerated fine powder.

[0043] The connecting pipe 14 is used to input the airflow in the air blower 1301 into the inside of the placing box 2, so as to dry the material in the placing box 2.

[0044] As shown in Figure 1 , Figure 2 , Figure 3 The output end of the first discharge pipe 1303 is sequentially provided with a first classification zone 15, a second classification zone 16 and a third classification zone 17 from left to right. The bottom outer surface of each of the first classification zone 15, the second classification zone 16 and the third classification zone 17 is provided with a particle size detection sensor 18. The bottom of each of the first classification zone 15, the second classification zone 16 and the third classification zone 17 is provided with a storage tank 19. Each of the first classification zone 15, the second classification zone 16 and the third classification zone 17 is provided with a classification tank. The first classification zone 15 includes a classification turbine arranged in the classification tank. The second classification zone 16 includes a cyclone collector arranged in the classification tank. The third classification zone 17 includes a pulse dust collector arranged in the classification tank.

[0045] The classification turbine in the classification tank of the first classification area 15 rotates at high speed, generating centrifugal force. The dust-containing airflow entering from the first discharge pipe 1303 is affected by the centrifugal force and the airflow resistance. The larger particles are thrown to the tank wall and fall along the wall to be collected and packaged as a first-level product. The smaller particles enter the second classification area 16 inside the cyclone collector and are separated by the centrifugal force generated by the rotating airflow. The separated particles are then collected and packaged as a second-level product. The ultrafine particles enter the third classification area 17 inside the pulse dust collector. The pulse dust collector is provided with a filter bag. The ultrafine particles are trapped by the interception of the filter bag pores. The filter bag is periodically cleaned by pulse blowing. Compressed air is sprayed back to the filter bag to make the ultrafine particles fall and be collected and packaged as a third-level product. The particle sizes of the first-level product, the second-level product, and the third-level product decrease in turn.

[0046] In the present embodiment, first, the material enters the inside of the placing box 2 through the spiral feeding assembly 3, and is dispersed by the knocking assembly 5 and the screening assembly 7, and the size of the material retained on the screening plate 704 is detected;

[0047] The silicon carbide powder enters from the feed port 302 of the connecting frame 301. The control console remotely controls the first motor 303 to start, drives the spiral shaft 304 to rotate, and the spiral shaft 304 pushes the powder along the inside of the connecting frame 301 to the discharge port 305 at the bottom through the rotating thrust, realizing quantitative conveying of the material. At the same time, the first motor 303 drives the first transmission assembly 4 and the second transmission assembly 6 to rotate synchronously, so that the cam 502 in the knocking assembly 5 and the stirring rod 503 can push the screening plate 704 to vibrate and realize up-and-down reciprocating motion while dispersing the material, and screen the material. The material retained on the top of the screening plate 704 is detected by the first visual sensor 709;

[0048] In the present embodiment, in the first step, the user sets the numerical parameters in advance according to the actual feeding amount of the material through the controller. The numerical parameters include the initial speed r0 of the first motor 303, the speed R0 of the second motor 8, and the initial angle value a0 of the screening plate 704, which is set to 90°. In addition, the material diameter length is denoted as d0, and the retention area range is denoted as S0:

[0049] The material diameter length refers to the diameter length of the material retained on the top of the screening plate 704. Both the material diameter length and the retention area range are related to the speed of the first motor 303. The first motor 303 is used to control the speed of the first transmission assembly 4 and the second transmission assembly 6, and the frequency of the knocking assembly 5. The angle value of the screening plate 704 is used to control the flow of the discharge. When the angle value is 90°, the discharge process is not performed;

[0050] After the material feeding ends, the screening process inside the box 2 is continued for a period of time, and then the standing process is continued for a period of time. During the standing process, the first visual sensor 709 detects the actual value of the material diameter and the actual value of the residence area range, wherein the actual value of the material diameter is denoted as d1, and d1 is the average value of all measured material diameters. The actual value of the residence area range is denoted as S1;

[0051] Specifically, case one: when d1≤d0 and S1≤S0, it indicates that the material diameter size is overall qualified, and the residence area range on the top of the screening plate 704 is small, which meets the expected screening effect.

[0052] Case two: when d1≤d0 and S1>S0, it indicates that although the material diameter size is overall qualified, the residence area range is large. It is preliminarily judged that the initial knocking frequency is low, which leads to insufficient dispersion of the material on the screening plate 704, and a large number of qualified small particles are not passed through the screen holes in the screening plate 704 due to aggregation, resulting in accumulation on the screening plate 704.

[0053] Case three: when d1>d0 and S1≤S0, it indicates that the material diameter size retained on the top of the screening plate 704 is large, but the residence area range is small, which means that a small amount of material with oversized diameter size is mixed during the feeding process, making it difficult to pass through the screening plate 704.

[0054] Case four: when d1>d0 and S1>S0, it indicates that the material diameter size retained on the top of the screening plate 704 is large, and the residence area range is large. It is preliminarily judged that the knocking frequency of the first motor 303 is too low, and the material dispersion is seriously insufficient, resulting in a large number of large particles aggregating on the upper surface of the screening plate 704, causing the screen holes to be blocked, so that the qualified small particles cannot pass through the screen holes.

[0055] For case one, the speed of the first motor 303 does not need to be adjusted. After the standing process ends, the initial angle α0 of the screening plate 704 is adjusted to 45° to discharge the residual small particles, avoiding the accumulation of the retained material affecting the next round of screening.

[0056] For case two, the speed r0 of the first motor 303 is increased to increase the frequency of the knocking assembly 5 and the speed of the first transmission assembly 4 and the second transmission assembly 6, promoting the dispersion of the material. After standing, the angle of the screening plate 704 is adjusted to 50° to slowly discharge the particles.

[0057] For case three, a pretreatment screening mechanism is added before feeding to reduce the mixing of oversized particles. If the proportion of oversized particles is very low, the speed r0 can remain unchanged. If oversized particles frequently appear, the speed r0 can be reduced to slightly reduce the transmission speed, allowing the screen plate 704 sufficient time to intercept oversized particles. After standing, the angle of the screen plate 704 is adjusted to 70° to quickly discharge the small amount of large particles remaining, preventing them from clogging the screen holes, and increasing the speed of the second motor 8 to drive the third transmission assembly 11 and the first and second dispersion rollers 9 and 10 to break up and disperse oversized particles at high frequency.

[0058] For case four, the speed r0 of the first motor 303 is increased to significantly increase the knocking frequency to break up large particles, and the transmission speed is also increased to reduce the residence time of large particles on the screen plate 704. After standing, the angle of the screen plate 704 is adjusted to 50° to slowly discharge large particle materials, and the speed R0 of the second motor 8 is increased to break up large particle materials at high frequency. After the large particle materials are discharged, the speed of the second motor 8 is reduced, and the angle of the screen plate 704 is adjusted to 70° to quickly discharge the remaining small particles.

[0059] After preliminary processing for cases two and four, the comparison between S1 and S0 is performed again.

[0060] It should be noted that a heater is provided at the connection pipe 14, and the connection pipe 14 is connected with a switch valve. The connection pipe 14 can introduce heated airflow from the induced draft fan 1301 into the interior of the placement box 2. On the one hand, it assists the small screen hole diameter and residual material particles to be dispersed and discharged by airflow. On the other hand, if S1 is still greater than S0, the switch valve is opened to dry the remaining materials by heated airflow. After drying, the particles are subjected to a vibration step for knocking and screening.

[0061] Further, the preliminarily processed materials pass through the airflow dispersion assembly 13, which can provide high-pressure airflow through the induced draft fan 1301. The materials entering the fluidized bed 1302 from the first discharge pipe 1303 are suspended in the bed in a fluidized state under the impact of the airflow. When the airflow passes through the gaps between the particles, it further breaks up the agglomerates through buoyancy and shear force, allowing the particles to move upward with the airflow in a single dispersed state, thereby achieving airflow separation of the agglomerated fine powder.

[0062] The first, second, and third classification zones 15, 16, and 17 are each provided with a particle size detection sensor 18 for detecting the size of the material. The corresponding standard ranges are 、 、 , > > ;

[0063] After separation, the material enters the first classification area 15, and the classification turbine in the classification tank rotates at high speed to generate a centrifugal field. The dust-containing airflow entering from the first discharge pipe 1305 is subjected to the combined action of centrifugal force and airflow resistance. The coarse particles are thrown to the tank wall and fall along the wall due to the centrifugal force being greater than the airflow resistance. If the particle size of the collected material is D> D1 at this time, it is detected by the particle size detection sensor 18, indicating that the particle size is relatively large, exceeding the standard range of qualified particles. It can be preliminarily judged whether the classification turbine speed is insufficient. Due to insufficient centrifugal force, coarse particles cannot be effectively separated. At this time, the classification turbine speed should be increased to enhance the centrifugal force, so that more coarse particles are separated. When the particle size is detected as D≤ D1, , it can fall into the storage tank 19 at the bottom for collection and packaging.

[0064] Further, if D> D1 is still detected, , it can be judged whether the airflow speed entering the first classification area 15 is too fast, causing coarse particles to be wrapped by the airflow without being thrown to the tank wall. At this time, the airflow speed is reduced, and the control panel controls the airflow dispersion assembly 13 to reduce the airflow speed of the fluidized bed 1302 through the induced draft fan 1301, reducing the wrapping force of the airflow on the coarse particles, so that the coarse particles can fall along the wall and be collected for packaging in the storage tank 19 at the bottom.

[0065] The smaller particles in the first classification area 15 follow the airflow into the second classification area 16, and the centrifugal force generated by the rotating airflow causes the smaller particles to settle and separate. If the collected smaller particles are detected as D> D2, , it is judged whether the airflow rotation intensity of the cyclone collector is insufficient, and the centrifugal separation effect is poor. At this time, the airflow intensity of the cyclone collector needs to be increased to enhance the cyclone centrifugal force. The smaller particles settled at this time are detected as D≤ D2, , which is a two-level qualified product, and can fall into the inside of the storage tank 19 for collection and packaging.

[0066] The ultrafine particles in the second classification area 16 follow the airflow into the third classification area 17. If the particle size D> D3 of the particles intercepted by the pulse dust collector in the third classification area 17, , it indicates that the relatively coarse particles in the ultrafine particles have not been effectively intercepted. It can be judged that the filter bag of the pulse dust collector has decreased in filtering precision and has appeared damage phenomenon. The filter bag cannot effectively separate the ultrafine particles and the relatively coarse particles in the ultrafine particles. At this time, the same type of new filter bag needs to be replaced in its entirety, and the pulse dust collector intercepts the ultrafine particle material again. At this time, the new filter bag has a fine particle D≤ D3 , which is a three-level qualified product, and can enter the inside of the storage tank 19 for collection.

[0067] The specific use method is as follows:​

[0068] Step one: feeding, the silicon carbide powder is added from the feeding port 302 of the spiral feeding assembly 3, the controller starts the first motor 303, the spiral shaft 304 is driven to rotate, the powder is pushed along the inside of the connecting frame 301 to the bottom discharge port 305 through the pushing force of the spiral shaft 304, the quantitative and stable conveying of the material is realized, and accumulation or material breakage is avoided;

[0069] Step two: preliminary dispersion and vibration screening, the first motor 303 is driven through the first transmission assembly 4 and the second transmission assembly 6, and the two groups of support rods 501 of the knocking assembly 5 are synchronously driven to rotate, so that the stirring rod 503 in the knocking assembly 5 preliminarily disperses the material, and the sieve plate 704 is knocked, so that vibration screening is realized;

[0070] Step three: screening detection, the first motor 303 speed and the second motor 8 speed and the angle of the sieve plate 704 are adjusted through the first visual sensor 709 detecting the length and area range of the retained material;

[0071] Step four: material airflow dispersion, the material is sent into the fluidized bed 1302 of the airflow dispersion assembly 1301 by the feeding pump 12, and the high-pressure airflow is provided from the bottom of the fluidized bed 1302 by the induced draft fan 1301, so that the material is suspended in a fluidized state under the impact of the airflow, the buoyancy and shear force of the airflow further break the agglomeration, the particles move upward with the airflow in a monodisperse state, and airflow separation of the agglomerated particles is realized;

[0072] Step five: the material in a fluidized state enters the three-stage classification area through the first discharge pipe 1303 along the airflow, and then multi-stage classification is realized, finally, the classified material enters the storage tank 19 at the bottom of the three-stage classification area, and classification collection and packaging are realized.

[0073] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0074] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents, and these modifications or replacements do not change the essence of the corresponding technical solutions beyond the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A post-processing silicon carbide micropowder fractionation packaging system, characterized by: Including the operating platform (1) and the controller arranged inside the operating platform (1), the top of the operating platform (1) is provided with a placing box (2), the top of the placing box (2) is provided with a spiral feeding assembly (3), the spiral feeding assembly (3) includes a connecting frame (301) fixedly connected with the top of the placing box (2), a feeding port (302) is formed in the top of the connecting frame (301), and a first motor (303) is installed on one side of the connecting frame (301); The output end of the first motor (303) is provided with a first transmission assembly (4), the inside of the placing box (2) is provided with a knocking assembly (5), the knocking assembly (5) includes two groups of support rods (501) connected with the inside of the placing box (2) through bearings, the two groups of support rods (501) are connected with a second transmission assembly (6) between the same side ends, a screening assembly (7) is arranged below the knocking assembly (5), the top of the operating platform (1) is provided with an airflow dispersion assembly (13), the airflow dispersion assembly (13) includes a first discharge pipe (1303), the output end of the first discharge pipe (1303) is sequentially provided with a first classification zone (15), a second classification zone (16) and a third classification zone (17) from left to right, the bottoms of the first classification zone (15), the second classification zone (16) and the third classification zone (17) are provided with storage tanks (19), the airflow dispersion assembly (13) further includes an induced draft fan (1301) fixedly installed on the top of the operating platform (1), the air outlet pipe of the induced draft fan (1301) is connected with a fluidized bed (1302), the air outlet pipe of the induced draft fan (1301) is also connected with a connecting pipe (14), the other end of the connecting pipe (14) is connected with the placing box (2), a valve is arranged at the connecting pipe (14), a material conveying pump (12) is installed on the top of the operating platform (1), the bottom of one side of the fluidized bed (1302) is connected with one end of the material conveying pump (12), the first discharge pipe (1303) is arranged at the top of the other side of the fluidized bed (1302), the screening assembly (7) includes a chute (701) formed on both sides in the inside of the placing box (2), the inside of the chute (701) is fixedly connected with a sliding rod (702), the outside top end of the sliding rod (702) is slidingly connected with a sliding block (703), a sieve plate (704) is hinged on one side of the sliding block (703), the top of the sieve plate (704) is provided with a first visual sensor (709), a second motor (8) is arranged below the support rod (501) on the outer surface of the placing box (2), the output end of the second motor (8) is connected with a first dispersion roller (9), a second dispersion roller (10) is arranged on one side of the first dispersion roller (9), a rotational speed sensor (1104) is arranged on the outside of the second motor (8), the bottom outer surfaces of the first classification zone (15), the second classification zone (16) and the third classification zone (17) are all provided with particle size detection sensors (18).

2. The post-processing silicon carbide micropowder grading and packaging system according to claim 1, characterized in that: The first motor (303) is supported and fixed by a fixing frame and the outer wall of the placing box (2), the output end of the first motor (303) is connected with a spiral shaft (304), the bottom of the connecting frame (301) is provided with a discharge port (305), the first transmission assembly (4) comprises a first belt pulley (401) connected with the output end of the first motor (303), the outer transmission of the first belt pulley (401) is connected with a first belt body (402), and the other end of the first belt body (402) is transmissionally connected with a second belt pulley (403).

3. The system for grading and packaging of processed silicon carbide micropowder according to claim 2, characterized in that: One group of the support rods (501) are transmissionally connected with the second belt pulley (403).

4. The system for grading and packaging of processed microsilica of claim 3, wherein: The second transmission assembly (6) comprises a third belt pulley (601) fixedly connected with one end of one group of the support rods (501), the outer surface of the third belt pulley (601) is transmissionally connected with a second belt body (602), the other end of the second belt body (602) is transmissionally connected with a fourth belt pulley (603), the inner portion of the fourth belt pulley (603) is fixedly connected with one end of the adjacent support rod (501), the outer surfaces of the two groups of the support rods (501) located on the outer surface of the inside of the placing box (2) are fixedly connected with cams (502), and the outer surfaces of the two sides of the cam (502) are provided with stirring rods (503).

5. The post-processing silicon carbide micropowder classification and packaging system of claim 4, wherein: The bottom of the sliding block (703) is fixedly connected with a connecting rod (705), the bottom of the connecting rod (705) is fixedly connected with a sliding block (706), the sliding block (706) is sleeved on the outer portion of the sliding rod (702), the bottom of the sliding block (706) and the bottom of the sliding groove (701) are fixedly connected with a supporting spring (707), the supporting spring (707) is sleeved on the outer surface of the sliding rod (702), and the sliding block (706) and the sieve plate (704) are hingedly connected with an electric push rod (708).

6. The system for grading and packaging of processed microsilica of claim 5, wherein: The first dispersion roller (9) and the second dispersion roller (10) are provided with a third transmission assembly (11), the third transmission assembly (11) comprises a fifth belt pulley (1101) fixedly connected with one end of the outer surface of the first dispersion roller (9), the outer portion of the fifth belt pulley (1101) is connected with a third belt body (1102), one end of the third belt body (1102) is transmissionally connected with a sixth belt pulley (1103), and one end of the feed pump (12) is connected with the top of the placing box (2).

7. A method for using a post-processing silicon carbide micro-powder grading and packaging system, which is suitable for the post-processing silicon carbide micro-powder grading and packaging system of claim 6, characterized in that: Step one: feeding, the silicon carbide micro-powder is added from the feeding port (302) of the spiral feeding assembly (3), the controller starts the first motor (303), drives the spiral shaft (304) to rotate, and pushes the micro-powder along the inside of the connecting frame (301) to the bottom discharge port (305) through the pushing force of the spiral shaft (304), so that the quantitative and stable conveying of the material is realized, and the accumulation or material breakage is avoided. Step two: preliminary dispersion and vibration screening, the first motor (303) drives the two groups of support rods (501) of the knocking assembly (5) to rotate through the first transmission assembly (4) and the second transmission assembly (6), so that the stirring rod (503) in the knocking assembly (5) preliminarily disperses the material, and knocks the screen plate (704) at the same time, realizing vibration screening; Step three: screening detection, the first visual sensor (709) detects the size and area range of the retained material, and adjusts the rotation speed of the first motor (303) and the second motor (8) and the angle of the screen plate (704); Step four: material airflow dispersion, the material is sent to the fluidized bed (1302) of the airflow dispersion assembly (13) by the material pump (12), the induced draft fan (1301) provides high-pressure airflow from the bottom of the fluidized bed (1302), the material is suspended in a fluidized state under the impact of the airflow, and the buoyancy and shear force of the airflow further break the agglomeration, so that the particles move upward with the airflow in a monodisperse state, realizing airflow separation of the agglomerated particles; Step five: the fluidized material enters the three-stage classification area through the first discharge pipe (1303) along with the airflow, and then realizes multi-stage classification, finally, the classified material enters the storage tank (19) at the bottom of the three-stage classification area respectively, realizing classification collection and packaging.

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