Sic powder conveying apparatus and method

Abstract

The application relates to the technical field of powder conveying equipment, and discloses SIC powder conveying equipment and a conveying method. The equipment comprises a vacuum mechanism, a feeding assembly, a feeding mechanism, a screening device and a sub-packaging device which are sequentially arranged on a workbench. The vacuum mechanism connected with the feeding mechanism is started, the crushed SIC crushed material is input from a first feeding port on the feeding assembly into a conical hopper of the feeding mechanism, the crushed material is conveyed from a discharging pipe to the screening device under the vibration of a straight vibrator to be screened in multiple layers, a plurality of powder materials of different specifications are screened out, the powder materials of different specifications are finally sub-packaged into a material frame through the sub-packaging mechanism, and the material frame is conveyed to a destination by a conveying mechanism. The SIC powder conveying equipment and the conveying method realize integrated automatic production of feeding, screening, quantitative sub-packaging and conveying of the SIC powder, reduce the labor cost, and improve the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of powder conveying equipment technology, specifically to SIC powder conveying equipment and conveying method. Background Technology

[0002] SiC (silicon carbide) is a very important industrial raw material used in various industries and fields. SiC powder can be mixed with other materials to make refractory materials, which have high temperature stability and corrosion resistance. It can also be made into substrates and packaging materials in electronic devices, which have excellent thermal and electrical conductivity. Therefore, it is widely used in semiconductor and other fields.

[0003] In the semiconductor field, SiC raw materials typically need to be crushed and screened to obtain powder of the required mesh size. Then, the SiC powder is cleaned to remove impurities, ultimately yielding qualified SiC powder. In current production, the SiC raw material crushing process, the SiC powder screening process, and the process of packaging and cleaning into containers are all carried out separately. This results in increased labor costs due to transfers and transportation between each process, and low production efficiency.

[0004] Therefore, there is an urgent need for SIC powder conveying equipment and methods to solve the above problems. Summary of the Invention

[0005] Based on the above, the purpose of this invention is to provide a SiC powder conveying device and conveying method to solve the problems of low production efficiency and high labor costs in the SiC powder processing and production process in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This invention provides a SiC powder conveying device, comprising: a worktable;

[0008] The feeding mechanism, located on the workbench, includes a first frame and a feeding assembly mounted on the first frame, for transferring crushed SiC powder.

[0009] A first vacuum mechanism is provided on the worktable, and a negative pressure channel is formed between the first vacuum mechanism and the feeding assembly; it is used to assist the feeding assembly in feeding.

[0010] The screening device, located on the workbench near the feeding mechanism, includes a first vibrating screen, a second vibrating screen, a first storage mechanism, and a second storage mechanism that are electrically connected to each other. The first vibrating screen is electrically connected to the feeding assembly. The screening device is used for grading and screening and grading storage of crushed SIC powder.

[0011] The dispensing device, located on the workbench, includes a second frame and a dispensing mechanism on the second frame. The dispensing mechanism is conductively connected to the second storage mechanism. A transport mechanism is located below the dispensing device, and a material frame is located on the transport mechanism. The dispensing mechanism is used to quantitatively dispense the graded and screened SiC powder into the material frame and transport it to the destination via the transport mechanism.

[0012] A second vacuum mechanism forms a negative pressure channel with the material distribution mechanism to assist the material distribution mechanism in feeding materials.

[0013] As an optional technical solution for the SIC powder conveying equipment, it also includes a feeding assembly connected to the feeding assembly; the feeding assembly includes a first filter assembly, a first electric butterfly valve, a first conical hopper, and a discharge pipe connected in sequence from top to bottom. The first filter assembly has a first air outlet at the top and a second feed inlet on one side near its bottom. The discharge pipe is shaped like a "7", with one end connected to the bottom opening of the first conical hopper and the other end extending to the outside of the first frame and connected to the first vibrating screen; a straight vibrator is also provided below the discharge pipe and abuts against its bottom.

[0014] The vacuum mechanism is connected to the first air outlet to form a negative pressure channel; the feeding assembly is connected to the second feeding port; the crushed SiC powder is transported from the feeding assembly to the loading assembly under the action of negative pressure airflow.

[0015] As an optional technical solution for SIC powder conveying equipment, the first rotary vibrating screen and the second rotary vibrating screen are arranged adjacent to each other. The first rotary vibrating screen is provided with a first screening layer, a second screening layer and a third screening layer from top to bottom; the second rotary vibrating screen is provided with a fourth screening layer, a fifth screening layer and a sixth screening layer from top to bottom.

[0016] The first and fourth screening layers are each provided with a feed inlet on their upper surfaces, and each screening layer is provided with a discharge port; the discharge port on the second screening layer is connected to the feed inlet pipe on the fourth screening layer.

[0017] As an optional technical solution for SIC powder conveying equipment, the first storage mechanism has two parts, including a first support bracket, a storage box, and a third inlet on the upper surface of the storage box. The upper end of the first support bracket has two relatively overlapping first support platforms. The storage box is partially inserted through the first support platforms. A first gravity sensor is provided between the four middle positions of the two first support platforms. The bottom of the storage box is also provided with a first discharge port.

[0018] The discharge ports on the first and third screening layers are respectively connected to the third inlet ports on the two storage tanks via pipes.

[0019] As an optional technical solution for the SIC powder conveying equipment, the second storage mechanism is provided in three parts and arranged around the second vibrating screen. The second storage mechanism includes a second support bracket, a storage bucket, and a fourth inlet on the upper surface of the storage bucket. The upper end of the second support bracket is provided with two relatively overlapping second support platforms. The storage bucket is partially inserted through the second support platforms. A second gravity sensor is provided between the four middle positions of the two second support platforms. A second discharge port is provided below the storage bucket. A first discharge baffle is provided on the second discharge port. A first discharge cylinder is connected to one side of the first discharge baffle.

[0020] The discharge ports on the fourth, fifth, and sixth screening layers are respectively connected to the fourth inlet pipes on the three second storage mechanisms.

[0021] As an optional technical solution for the SiC powder conveying equipment, a powder transfer assembly is also provided between the dispensing device and the screening device; the dispensing mechanism includes a third filter assembly, a second electric butterfly valve, a second conical hopper, a quantitative conveying assembly, and a quantitative discharge assembly connected sequentially from top to bottom. The third filter assembly has a second air outlet at the top and a fifth inlet on one side near its bottom. The quantitative conveying assembly includes a conveying motor, an auger, and a "7"-shaped guide pipe. The output end of the conveying motor is connected to the auger, which is fitted inside the "7"-shaped guide pipe. The top surface of the horizontally placed "7"-shaped guide pipe has a sixth inlet, and the bottom of the vertically placed "7"-shaped guide pipe has a second outlet.

[0022] The powder transfer assembly is a multi-port transfer pipe, including a first discharge port and multiple feed ports, and an electric valve is installed on each feed port; the first discharge port is electrically connected to the fifth feed port; the sixth feed port is electrically connected to the bottom opening of the second conical hopper.

[0023] As an optional technical solution for the SIC powder conveying equipment, the quantitative conveying assembly further includes two first mounting plates that are spaced apart on the second frame. A third support platform is provided above the two first mounting plates. Two third gravity sensors are installed between the third support platform and each of the first mounting plates. A motor bracket and two material pipe brackets are arranged in sequence on the third support platform. The conveying motor is mounted on the motor bracket. The "7"-shaped guide pipe is mounted on the two material pipe brackets. An annular clamp for fastening the "7"-shaped guide pipe is provided on each material pipe bracket.

[0024] As an optional technical solution for the SiC powder conveying equipment, the quantitative discharge assembly includes a first mounting bracket and a weighing box fixedly connected to the second frame. The first mounting bracket has a hollow structure and is equipped with a fourth gravity sensor on both sides. The weighing box has a seventh feed inlet at the top and an opening at the bottom. Mounting blocks are provided on both sides of the weighing box, and the weighing box is mounted on the fourth gravity sensor through the mounting blocks. A second mounting bracket is provided on the weighing box, and the bottom of the weighing box is inclined. Its opening is inclined on one side of the bottom of the weighing box below the second mounting bracket. A second unloading cylinder is installed on the second mounting bracket. The telescopic end of the second unloading cylinder is parallel to the bottom opening of the weighing box. The end of the telescopic end of the second unloading cylinder is connected to a second unloading baffle, and the second unloading baffle is movably sleeved on the bottom opening of the weighing box.

[0025] The second discharge port is electrically connected to the seventh inlet port.

[0026] As an optional technical solution for the SiC powder conveying equipment, the conveying mechanism includes a conveying support and two side plates symmetrically arranged at intervals on the top of the conveying support. A drive shaft is connected between one end of the two side plates, and a driven shaft is connected between the other ends. A chain plate is provided near the inner side of the two side plates on both the drive shaft and the driven shaft. Gears are provided at both ends of the drive shaft and the driven shaft. The chain plate is arranged around the gears on the drive shaft and the driven shaft. A drive motor is installed at one end of the drive shaft. The material frame is arranged on the chain plate. Multiple positioning components for positioning the material frame are spaced apart on the X-axis of the top surface of the conveying support. The positioning components include positioning cylinders and positioning parts connected to the telescopic ends of the positioning cylinders.

[0027] On the other hand, a method for conveying SiC powder is provided, including the following steps:

[0028] S1. Feeding: Connect the first feed inlet to the crushed SiC powder, start the first vacuum mechanism, and the crushed SiC powder is conveyed into the first conical funnel under negative pressure airflow. At this time, the direct vibrator works and linearly conveys the powder in the first conical funnel to the first rotary vibrating screen through the discharge pipe.

[0029] S2. Powder coarse screening: Start the first vibrating screen. The powder in the first and third screen layers after screening is transported to the two first storage units through pipelines. The powder in the second screen layer is transported to the second vibrating screen through pipelines.

[0030] S3. Fine screening of powder: Start the second vibrating screen, and further finely screen the powder in the second screen layer through the fourth, fifth and sixth screen layers to obtain three different mesh sizes of powder, which are then transported to the three second storage mechanisms through pipelines respectively.

[0031] S4. Powder dispensing and transportation: The second vacuum mechanism is activated, and the powder in the second storage mechanism is transported to the second conical hopper under negative pressure airflow. Then, it is transported to the weighing box through the quantitative conveying component. The second unloading cylinder drives the second unloading baffle to move upward to form an opening, and the powder falls into the material frame. Finally, the transportation mechanism transports the dispensed powder to the destination.

[0032] The beneficial effects of this invention are as follows:

[0033] The SiC powder conveying equipment provided by this invention includes a vacuum mechanism, a feeding assembly, a loading mechanism, a screening device, and a dispensing device, sequentially arranged on a worktable. By activating the first vacuum mechanism connected to the loading mechanism, a negative pressure is generated on the loading mechanism. Crushed SiC particles are input from the first inlet on the feeding assembly and enter the conical hopper of the loading mechanism. Under the vibration of the linear vibrator, the particles are conveyed from the discharge pipe to the first vibrating screen for the first screening. Particles that pass the first screening are conveyed through a pipeline to the second vibrating screen for the second screening, resulting in various powders of different specifications. Finally, the dispensing mechanism distributes the various powders of different specifications into the material frames on the powder conveying assembly, which then transports them to the next destination. This SiC powder conveying equipment, from the input of particles, through multiple screenings, to the final quantitative dispensing of various powders of different specifications by the dispensing device, achieves full automation of the entire production and conveying process, eliminating the need for tedious manual operations, improving production efficiency, and reducing production costs.

[0034] The SiC powder conveying method provided by this invention achieves integrated automated production of SiC powder feeding, screening, quantitative packaging and transportation by applying the above-mentioned SiC powder conveying equipment, thereby reducing labor costs and improving production efficiency. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the SiC powder conveying device of the present invention;

[0036] Figure 2 This is an exploded view of the feeding mechanism in an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the screening device in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the first material storage mechanism in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of the second material storage mechanism in an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the vacuum mechanism in an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the feeding assembly in an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the structure of the powder transfer assembly in an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram of the dispensing device and the transport mechanism in an embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram of the dispensing device in an embodiment of the present invention;

[0045] Figure 11 This is a schematic diagram of the material distribution mechanism in an embodiment of the present invention;

[0046] Figure 12 This is a schematic diagram of the structure of the quantitative feeding component and the quantitative discharging component in an embodiment of the present invention;

[0047] Figure 13 This is an exploded view of the quantitative feeding component in an embodiment of the present invention;

[0048] Figure 14 This is a schematic diagram of the structure of the quantitative dispensing component in an embodiment of the present invention;

[0049] Figure 15 This is a schematic diagram of the transportation mechanism in an embodiment of the present invention;

[0050] Figure 16 This is a schematic diagram of the positioning component in an embodiment of the present invention;

[0051] In the picture:

[0052] 1. First vacuum mechanism; 10. First vacuum pump; 11. Second filter assembly; 12. First air inlet;

[0053] 2. Feeding assembly; 20. First feed inlet; 21. "Y" shaped conveyor pipe; 22. Breather valve;

[0054] 3. Feeding mechanism; 30. First frame; 31. Feeding assembly;

[0055] 32. First filter assembly; 321. First air outlet; 322. Second feed inlet; 33. First conical hopper; 331. Discharge pipe; 332. First electric butterfly valve; 34. Straight vibrator;

[0056] 4. Screening device; 41. First vibrating screen; 411. First screening layer; 412. Second screening layer; 413. Third screening layer;

[0057] 42. Second vibrating screen; 421. Fourth screen layer; 422. Fifth screen layer; 423. Sixth screen layer;

[0058] 43. First material storage mechanism; 431. Material storage box; 432. Third feed inlet; 433. First discharge port; 434. First gravity sensor; 435. First support platform; 436. First support bracket;

[0059] 44. Second storage mechanism; 441. Storage hopper; 442. Fourth feed inlet; 443. Second discharge port; 444. Second support platform; 445. Second support bracket; 446. Second gravity sensor; 447. First discharge cylinder; 448. First discharge baffle;

[0060] 5. Powder transfer assembly; 51. Feed inlet; 52. First discharge port; 53. Electric valve;

[0061] 6. Packaging device; 61. Second frame;

[0062] 62. Material distribution mechanism; 621. Third filter assembly; 622. Second air outlet; 623. Fifth feed inlet; 624. Second electric butterfly valve; 625. Second conical hopper;

[0063] 63. Quantitative feeding assembly; 631. Feeding motor; 632. Screwdriver; 633. "7" shaped guide pipe; 6331. Pipe support; 6332. Annular clamp; 634. Sixth feed inlet; 635. Second discharge outlet; 636. Motor support; 637. Third support platform; 638. First mounting plate; 639. Third gravity sensor;

[0064] 64. Quantitative discharge assembly; 641. First mounting bracket; 642. Weighing bin; 643. Seventh feed inlet; 644. Mounting block; 645. Second unloading cylinder; 646. Second unloading baffle; 647. Second mounting bracket; 648. Fourth gravity sensor;

[0065] 7. Transport mechanism; 71. Transport support; 72. Side plate; 73. Drive shaft; 74. Driven shaft; 75. Chain plate; 76. Drive motor; 77. Positioning assembly; 771. Positioning cylinder; 772. Positioning component; 78. Material frame;

[0066] 8. Second vacuum mechanism;

[0067] 9. Workbench. Detailed Implementation

[0068] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0069] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0070] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0072] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0073] like Figures 1 to 16As shown, the present invention provides a SiC powder conveying device, which includes: a workbench 9; a feeding mechanism 3, disposed on the workbench 9, including a first frame 30 and a feeding assembly 31 disposed on the first frame 30, for transferring crushed SiC powder; a first vacuum mechanism 1, disposed on the workbench 9, forming a negative pressure channel between the first vacuum mechanism 1 and the feeding assembly 31, for assisting the feeding assembly 31 in feeding; and a screening device 4, disposed on the workbench 9 near the feeding mechanism 3, including a first vibrating screen 41, a second vibrating screen 42, a first storage mechanism 43 and a second storage mechanism 44 that are electrically connected to each other, the first vibrating screen 41 being electrically connected to the feeding assembly 31, and the screening device 4 being used for grading, screening and storing the crushed SiC powder; The dispensing device 6, located on the workbench 9, includes a second frame 61 and a dispensing mechanism 62 on the second frame 61. The dispensing mechanism 62 is conductively connected to the second storage mechanism 44. A transport mechanism 7 is located below the dispensing device 6, and a material frame 78 is located on the transport mechanism 7. The dispensing mechanism 62 is used to quantitatively dispense the graded and screened SiC powder into the material frame 78 and transport it to the destination through the transport mechanism 7. A second vacuum mechanism 8 forms a negative pressure channel with the dispensing mechanism 62 to assist the dispensing mechanism 62 in feeding.

[0074] The SIC powder conveying equipment provided by this invention generates negative pressure on the feeding mechanism 3 by activating the first vacuum mechanism 1 connected to the feeding mechanism 3. The crushed SIC fragments are input from the first feed port 20 on the feeding component 2 and enter the conical hopper of the feeding mechanism 3. Under the vibration of the straight vibrator 34, the fragments are conveyed from the discharge pipe 331 to the first rotary vibrating screen 41 for the first screening. The fragments that pass the first screening are conveyed through the pipeline to the second rotary vibrating screen 42 for the second screening, and various different specifications of powder are screened out. Finally, the various different specifications of powder are packaged into the material frame 78 on the powder conveying component by the material distribution mechanism 62, and then conveyed to the next destination by the conveying mechanism 7. The SIC powder conveying equipment, from the input of fragments, through multiple screenings, finally obtains various different specifications of powder, and then quantitatively packages them through the packaging device 6. The entire production and conveying process is fully automated, eliminating the need for tedious manual operations, improving production efficiency and reducing production costs.

[0075] Specifically, such as Figure 6 and Figure 7As shown, the first vacuum mechanism 1 includes a first vacuum pump 10 and a second filter assembly 11, which are connected by a pipe. The second filter assembly 11 has a first air inlet 12 on its side. The first vacuum mechanism 1 is used to provide negative pressure to the feeding assembly 31. The feeding assembly 2 includes a "Y"-shaped conveying pipe 21 and a first feed port 20 located horizontally above the "Y"-shaped conveying pipe 21. The first feed port 20 is used to connect to an external crusher for SiC raw materials, and the crushed SiC powder is input from the first feed port 20. A breather valve 22 is provided at the other end away from the two outlets of the "Y"-shaped conveying pipe 21. The breather valve 22 can adjust the negative pressure airflow between the feeding assembly 31 and the feeding assembly 2 to ensure that the powder in the negative pressure channel can be transported normally.

[0076] In this embodiment, as Figures 1 to 3 As shown, the SIC powder conveying equipment has a dual-station structure. Two feeding assemblies 31 are installed at intervals on the first frame 30. Each feeding assembly 31 includes a first filter assembly 32, a first electric butterfly valve 332, a first conical hopper 33, and a discharge pipe 331, which are connected sequentially from top to bottom. The first filter assembly 32 has a first air outlet 321 at its top, which is connected to the first air inlet 12 on the first vacuum mechanism 1 to form a negative pressure channel. The first filter assembly 32 has a second feed inlet 322 on one side near its bottom. The two discharge ports on the "Y"-shaped conveying pipe 21 are respectively connected to the second feed inlets 322 on the two feeding assemblies 31 for conveying powder. The discharge pipe 331 is shaped like a "7", with one end connected to the first conical hopper 33. The bottom opening of the hopper 33 is conductively connected, and the other end extends to the outside of the first frame 30 and is conductively connected to the first vibrating screen 41. A straight vibrator 34 is also provided below the discharge pipe 331, which abuts against its bottom. The straight vibrator 34 and the discharge pipe 331 are fixedly connected by a semi-circular bracket and a clamp. When the powder is sucked into the first filter component 32 under negative pressure airflow, the first electric butterfly valve 332 is opened, and the powder falls into the first conical hopper 33. Then, the straight vibrator 34 vibrates the discharge pipe 331, and the powder in the first conical hopper 33 is transported to the first vibrating screen 41 through the discharge pipe 331. The method of conveying the powder by the straight vibrator 34 is more linear and smooth than the traditional pushing conveying method, and there will be no blockage, which improves the conveying efficiency of the powder.

[0077] In this embodiment, as Figures 3 to 5As shown, the screening device 4 includes a first vibrating screen 41, a second vibrating screen 42, a first storage mechanism 43, and a second storage mechanism 44 that are interconnected. The first vibrating screen 41 and the second vibrating screen 42 are arranged adjacent to each other, and two sets of the first vibrating screen 41 and the second vibrating screen 42 are mirrored on the workbench 9. The first vibrating screen 41 is provided with a first screening layer 411, a second screening layer 412, and a third screening layer 413 from top to bottom. The top surface of the first screening layer 411 is provided with a feed inlet. The powder in the first conical hopper 33 is transported to the first screening layer 411 through the discharge pipe 331 for the first screening and grading. When the powder is transported to the first screening layer 411, the first vibrating screen 41 is started. The powder will be screened through the three layers of filter screens in the first vibrating screen 41 and divided into three different mesh sizes of powder, which are output from the discharge interface on each screening layer to the first storage mechanism and the second vibrating screen 42.

[0078] Specifically, the second vibrating screen 42 is provided with a fourth screening layer 421, a fifth screening layer 422, and a sixth screening layer 423 from top to bottom. The top surface of the fourth screening layer 421 is provided with a feed inlet, and the discharge interface on the second screening layer 412 is connected to the feed inlet pipe on the fourth screening layer 421 to transport the powder in the second screening layer 412 to the second vibrating screen 42 for secondary grading and screening. After further screening by the second vibrating screen 42, it is further refined into three different mesh sizes of powder. The three different mesh sizes of powder are respectively transported to the second storage mechanism through the discharge interface on each screening layer.

[0079] In this embodiment, there are two first storage mechanisms 43, including a first support bracket 436, a storage box 431, and two third feed ports 432 opened on the upper surface of the storage box 431. The remaining powder in the first screen layer 411 and the third screen layer 413 on the two first vibrating screens 41 will be transported through pipelines from the four third feed ports 432 on the two first storage mechanisms to the two storage boxes 431. That is to say, the two different mesh sizes of powder in the above four screen layers will be transported to the two storage boxes 431; the first support bracket 436 The end is provided with two overlapping first support platforms 435. The first support platforms 435 are hollow structures. The storage box 431 is vertically inserted through the two first support platforms 435, and the lower part of the storage box 431 extends to the bottom of the first support platforms 435. A first gravity sensor 434 is provided between the middle of the four sides of the two first support platforms 435. The bottom of the storage box 431 is also provided with a first discharge port 433. The first gravity sensor 434 can measure the weight of the powder in the storage box 431, and then transmit the data to the background control module to remind the operator to unload the material.

[0080] Specifically, the second storage mechanism 44 is provided in two groups, with three in each group. Each group of three second storage mechanisms 44 is arranged circumferentially on the workbench 9 along the second vibrating screen 42. The second storage mechanism 44 includes a second support bracket 445, a storage bin 441, and a fourth inlet 442 opened on the upper end face of the storage bin 441. The fourth inlet 442 is connected to the discharge interface pipe on the second vibrating screen 42 for powder conveying. The upper end of the second support bracket 445 is provided with two relatively overlapping second support platforms 444. The second support platforms 444 are hollow structures, and the storage bin 441 is vertically inserted through the two platforms. A second support platform 444 is provided, and the lower part of the storage hopper 441 extends to the bottom of the second support platform 444; a second gravity sensor 446 is provided between the middle positions of the four sides of the two second support platforms 444; a second discharge port 443 is provided below the storage hopper 441, and a first discharge baffle 448 is provided on the second discharge port 443. A first discharge cylinder 447 is connected to one side of the first discharge baffle 448; by setting the first discharge cylinder 447, the discharge of powder in the storage hopper 441 can be automatically controlled; the second gravity sensor 446 is used to measure the weight of the powder in the storage hopper 441.

[0081] Furthermore, such as Figure 8 As shown, a multi-channel pipeline conversion assembly is also provided between the dispensing device 6 and the screening device 4, preferably a multi-channel assembly with six or three components. The pipeline conversion assembly includes a first discharge port 52 and multiple feed ports 51, and an electric valve 53 is installed on each feed port 51. The start and stop of different electric valves 53 and different first unloading cylinders 447 are used to control the unloading of powder in different second storage mechanisms 44. The first discharge port 52 is connected to the dispensing mechanism 62 via a pipeline.

[0082] In this embodiment, as Figure 10 and Figure 11 As shown, the material distribution mechanism 62 includes a third filter assembly 621, a second electric butterfly valve 624, a second conical hopper 625, a quantitative conveying assembly 63, and a quantitative discharging assembly 64 connected sequentially from top to bottom. The top of the third filter assembly 621 is provided with a second air outlet 622, which is connected to the air inlet pipe on the second vacuum mechanism 8 to form a negative pressure channel. The third filter assembly 621 is provided with a fifth feed inlet 623 on one side near its bottom end; the fifth feed inlet 623 is connected to the first discharge outlet 52 pipe.

[0083] Specifically, such as Figure 12 and 13As shown, the quantitative feeding assembly 63 includes a feeding motor 631, an auger 632, and a "7"-shaped guide pipe 633. The output end of the feeding motor 631 is connected to the auger 632, which is fitted inside the "7"-shaped guide pipe 633. The top surface of the horizontally positioned "7"-shaped guide pipe 633 has a sixth feed inlet 634, and the bottom end of the vertically positioned "7"-shaped guide pipe 633 has a second discharge outlet 635. The impeller on the auger 632 between the output end of the feeding motor 631 and the second discharge outlet 635 is located away from the feeding motor 631. The impellers (not shown in the figure) on the auger 632 at the other end of section 31 rotate in opposite directions. That is, when the feeding motor 631 rotates, the section of auger 632 near the second discharge port 635 conveys the powder towards the second discharge port 635. At the same time, the section of auger 632 near the second discharge port 635 also conveys the powder towards the second discharge port 635. This structure of the auger 632 can prevent the powder from being pushed to the tail end of the "7"-shaped guide pipe 633 and cause blockage, thus improving the accurate delivery of the powder and increasing production efficiency. The negative pressure airflow generated by the second vacuum mechanism 8 conveys the powder in the second storage mechanism to the second conical hopper 625. Then, the feeding motor 631 is started to drive the auger 632 to rotate, conveying the powder through the second discharge port 635 to the quantitative discharge component 64.

[0084] Furthermore, the quantitative feeding assembly 63 also includes two first mounting plates 638 spaced apart on the second frame 61. A third support platform 637 is provided above the two first mounting plates 638. Two third gravity sensors 639 are spaced apart between the third support platform 637 and each first mounting plate 638. The third gravity sensors 639 are used to measure and weigh the powder in the second conical hopper 625 to ensure that the quantitative feeding assembly 63 accurately delivers the powder with the set weight to the quantitative discharge assembly 64. A motor bracket 636 and two material pipe brackets 6331 are arranged in sequence on the third support platform 637. The feeding motor 631 is mounted on the motor bracket 636, and the "7"-shaped guide pipe 633 is mounted on the two material pipe brackets 6331. An annular clamp 6332 for fastening the "7"-shaped guide pipe 633 is provided on each material pipe bracket 6331.

[0085] Specifically, such as Figure 12 and Figure 14As shown, the quantitative discharging component 64 includes a first mounting bracket 641 fixedly connected to the second frame 61 and a weighing bin 642. The first mounting bracket 641 has a hollow structure and is equipped with a fourth gravity sensor 648 on both sides. The fourth gravity sensor 648 performs secondary weighing on the powder conveyed to the weighing bin 642 by the quantitative conveying component 63. When the powder in the weighing bin 642 is less than the set weight, the quantitative conveying component 63 will replenish it; when the powder in the weighing bin 642 exceeds the set weight, the weighing bin 642 will leave the excess powder in the weighing bin 642 when discharging, ensuring that the weight of each discharge reaches the set parameter. The weighing bin 642 has a seventh inlet 643 on its top, and the second outlet 635 is electrically connected to the seventh inlet 643. 2. The bottom of the weighing box 642 is provided with an opening; mounting blocks 644 are provided on both sides of the weighing box 642, and the weighing box 642 is mounted on the fourth gravity sensor 648 through the mounting blocks 644; a second mounting bracket 647 is provided on the weighing box 642, the bottom of the weighing box 642 is inclined, and its opening is inclined on one side of the bottom of the weighing box 642 below the second mounting bracket 647. A second unloading cylinder 645 is installed on the second mounting bracket 647. The telescopic end of the second unloading cylinder 645 is set parallel to the bottom opening of the weighing box 642. The end of the telescopic end of the second unloading cylinder 645 is connected to a second unloading baffle 646. The second unloading baffle 646 is movably sleeved on the bottom opening of the weighing box 642. The second unloading cylinder 645 controls the opening and closing of the second unloading baffle 646 on the bottom opening of the weighing box 642 to unload and dispense the powder.

[0086] In this embodiment, as Figure 15 and 16As shown, the transport mechanism 7 includes a transport support 71 and two side plates 72 symmetrically arranged at intervals on the top of the transport support 71. A drive shaft 73 is connected between one end of each side plate 72, and a driven shaft 74 is connected between the other ends. A chain plate 75 is provided at both ends of the drive shaft 73 and the driven shaft 74 near the inner side of the side plate 72. Gears are provided at both ends of the drive shaft 73 and the driven shaft 74. The chain plate 75 is arranged to surround the gears on the drive shaft 73 and the driven shaft 74. A drive motor 76 is installed at one end of the drive shaft 73, and a material frame 78 is disposed on the chain plate 75. The drive motor 76 drives the chain plate 75 to move, thereby moving the material frame 78. The transport support 71 is moved; multiple positioning components 77 for positioning the material frame 78 are spaced apart on the top X-axis. The positioning component 77 includes a positioning cylinder 771 and a positioning element 772 connected to the telescopic end of the positioning cylinder 771. Two pulleys are provided on one end of the positioning element 772. The pulleys can prevent the positioning element 772 from scratching the material frame 78 when it slides on the material frame 78. At the same time, when the quantitative discharge component 64 feeds the material frame 78, the powder will bring an impact force to the material frame 78 under gravity. The positioning component 77 can block the material frame 78 and prevent displacement when the powder impacts the material frame 78.

[0087] This embodiment also provides a SiC powder conveying method, using the SiC powder conveying equipment described above, including the following steps:

[0088] S1. Feeding: Connect the first feed port 20 to the crushed SIC powder, start the first vacuum mechanism 1, and the crushed SIC powder is transported to the first conical funnel under negative pressure airflow. At this time, the vertical vibrator 34 works and linearly transports the powder in the first conical funnel to the first rotary vibrating screen 41 through the discharge pipe 331.

[0089] S2. Powder coarse screening: Start the first vibrating screen 41. The powder in the first screen layer 411 and the third screen layer 413 after screening is transported to the two first storage mechanisms through pipelines respectively; the powder in the second screen layer 412 is transported to the second vibrating screen 42 through pipelines.

[0090] S3. Fine screening of powder: Start the second vibrating screen 42, and further finely screen the powder in the second screen layer 412 through the fourth screen layer 421, the fifth screen layer 422 and the sixth screen layer 423 to obtain three different mesh sizes of powder, and then transport them to the three second storage mechanisms 44 through pipelines respectively.

[0091] S4. Powder dispensing and transportation: The second vacuum mechanism 8 is activated, and the powder in the second storage mechanism 44 is transported to the second conical hopper 625 under negative pressure airflow. Then, it is transported to the weighing box 642 through the quantitative conveying component 63. The second unloading cylinder 645 drives the second unloading baffle 646 to move upward to form an opening, and the powder falls into the material frame 78. Finally, the transportation mechanism 7 transports the dispensed powder to the destination.

[0092] In step S1, the first electric butterfly valve 332 is opened at the same time as the first vacuum mechanism 1 is started, so that the powder sucked into the first filter assembly 32 falls into the first conical hopper 33. Then, the straight vibrator 34 is started, and the powder in the first conical hopper is linearly transported to the first rotary vibrating screen 41 through the discharge pipe 331, thus completing the feeding of the screening device 4.

[0093] After step S3 is completed and before step S4 is performed, the first unloading baffle 448 on the second storage mechanism 44 that needs to be unloaded is opened, and the electric valve 53 connected to the powder transfer assembly 5 of the second storage mechanism 44 is opened at the same time; so that the second storage mechanism 44 that needs to be unloaded and the third filter assembly 621 form a conveying channel.

[0094] In step S4, the third gravity sensor 639 will detect the weight of the powder in the second conical hopper 625. When the weight of the powder in it reaches the set parameter, the second electric butterfly valve 624 will close and the second vacuum mechanism 8 will stop working. When the quantitative feeding component 63 symmetrically feeds the powder in the symmetrical hopper 642, the fourth gravity sensor 648 will detect the weight of the powder in the symmetrical hopper 642. When the weight of the powder in it reaches the set parameter, the quantitative feeding component 63 will stop feeding.

[0095] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A SiC powder conveying equipment, characterized in that, include: Workbench; The feeding mechanism, located on the workbench, includes a first frame and a feeding assembly mounted on the first frame, for transferring crushed SiC powder. A first vacuum mechanism is provided on the worktable, and a negative pressure channel is formed between the first vacuum mechanism and the feeding assembly; Used to assist the feeding component in feeding materials; The screening device, located on the workbench near the feeding mechanism, includes a first vibrating screen, a second vibrating screen, a first storage mechanism, and a second storage mechanism that are electrically connected to each other. The first vibrating screen is electrically connected to the feeding assembly. The screening device is used for grading and screening of crushed SiC powder and for grading and storing it. The dispensing device, located on the workbench, includes a second frame and a dispensing mechanism on the second frame. The dispensing mechanism is conductively connected to the second storage mechanism. A transport mechanism is located below the dispensing device, and a material frame is located on the transport mechanism. The dispensing mechanism is used to quantitatively dispense the graded and screened SiC powder into the material frame and transport it to the destination via the transport mechanism. A second vacuum mechanism is formed between the second vacuum mechanism and the material dispensing mechanism, creating a negative pressure channel. Used to assist the material feeding mechanism; The first vibrating screen and the second vibrating screen are arranged adjacent to each other. The first vibrating screen is provided with a first screening layer, a second screening layer and a third screening layer from top to bottom. The second vibrating screen is provided with a fourth screening layer, a fifth screening layer and a sixth screening layer from top to bottom. The upper surfaces of the first and fourth screening layers are provided with inlets, and each screening layer is provided with an outlet; the outlet on the second screening layer is connected to the inlet pipe on the fourth screening layer. The first storage mechanism includes a third inlet, and the outlets on the first and third screen layers are respectively connected to the third inlet on the first storage mechanism via pipes. The second storage mechanism includes a fourth inlet, and the outlets on the fourth, fifth, and sixth screen layers are respectively connected to the fourth inlet pipe on the second storage mechanism. A powder transfer assembly is also provided between the dispensing device and the screening device; the dispensing mechanism includes a third filter assembly, a second electric butterfly valve, a second conical hopper, a quantitative conveying assembly, and a quantitative discharging assembly connected sequentially from top to bottom. The third filter assembly has a second air outlet at the top and a fifth inlet near its bottom. The quantitative conveying assembly includes a conveying motor, an auger, and a "7"-shaped guide pipe. The output end of the conveying motor is connected to the auger, which is fitted inside the "7"-shaped guide pipe. The top surface of the horizontally placed "7"-shaped guide pipe has a sixth inlet, and the bottom of the vertically placed "7"-shaped guide pipe has a second outlet. The impeller on the auger has a two-section structure with the two sections rotating in opposite directions. Driven by the conveying motor, the two sections push the powder in the "7"-shaped guide pipe to the second outlet. The powder transfer assembly is a multi-port transfer pipe, including a first discharge port and multiple feed ports, and an electric valve is installed on each feed port; the first discharge port is electrically connected to the fifth feed port; the sixth feed port is electrically connected to the bottom opening of the second conical hopper.

2. The SiC powder conveying equipment according to claim 1, characterized in that, It also includes a feeding assembly connected to the feeding assembly; the feeding assembly includes a first filter assembly, a first electric butterfly valve, a first conical hopper and a discharge pipe connected in sequence from top to bottom. The first filter assembly has a first air outlet at the top and a second feed inlet on one side near its bottom. The discharge pipe is shaped like a "7", with one end connected to the bottom opening of the first conical hopper and the other end extending to the outside of the first frame and connected to the first vibrating screen. A straight vibrator is also provided below the discharge pipe and abuts against its bottom. The first vacuum mechanism is connected to the first air outlet to form a negative pressure channel; the feeding assembly is connected to the second feeding port; the crushed SiC powder is transported from the feeding assembly to the loading assembly under the action of negative pressure airflow.

3. The SiC powder conveying equipment according to claim 1, characterized in that, The first storage mechanism has two components, including a first support bracket, a storage box, and a third inlet on the upper surface of the storage box. The upper end of the first support bracket has two overlapping first support platforms. The storage box is partially inserted through the first support platforms. A first gravity sensor is provided between the four sides of the two first support platforms. The bottom of the storage box also has a first discharge port.

4. The SiC powder conveying equipment according to claim 1, characterized in that, The second storage mechanism has three parts, arranged around the circumference of the second vibrating screen. The second storage mechanism includes a second support bracket, a storage bucket, and a fourth inlet on the upper surface of the storage bucket. The upper end of the second support bracket has two overlapping second support platforms. The storage bucket is partially inserted through the second support platforms. A second gravity sensor is provided between the four middle positions of the two second support platforms. A second discharge port is provided below the storage bucket. A first discharge baffle is provided on the second discharge port. A first discharge cylinder is connected to one side of the first discharge baffle.

5. The SiC powder conveying equipment according to claim 1, characterized in that, The quantitative feeding assembly also includes two first mounting plates that are spaced apart on the second frame. A third support platform is provided above the two first mounting plates. Two third gravity sensors are installed between the third support platform and each of the first mounting plates. A motor bracket and two material tube brackets are arranged in sequence on the third support platform. The feeding motor is mounted on the motor bracket. The "7"-shaped guide tube is mounted on the two material tube brackets. An annular clamp for fastening the "7"-shaped guide tube is provided on each material tube bracket.

6. The SiC powder conveying equipment according to claim 1, characterized in that, The quantitative discharge assembly includes a first mounting bracket and a weighing box fixedly connected to the second frame. The first mounting bracket has a hollow structure and is equipped with a fourth gravity sensor on both sides. The weighing box has a seventh feed inlet at the top and an opening at the bottom. Mounting blocks are provided on both sides of the weighing box, and the weighing box is mounted on the fourth gravity sensor through the mounting blocks. A second mounting bracket is provided on the weighing box, and the bottom of the weighing box is inclined. Its opening is inclined on one side of the bottom of the weighing box below the second mounting bracket. A second unloading cylinder is mounted on the second mounting bracket. The telescopic end of the second unloading cylinder is parallel to the bottom opening of the weighing box. A second unloading baffle is connected to the end of the telescopic end of the second unloading cylinder. The second unloading baffle is movably sleeved on the bottom opening of the weighing box. The second discharge port is electrically connected to the seventh inlet port.

7. The SiC powder conveying equipment according to claim 1, characterized in that, The transport mechanism includes a transport support and two side plates symmetrically arranged at intervals on the top of the transport support. A drive shaft is connected between one end of the two side plates, and a driven shaft is connected between the other ends. A chain plate is provided near the inner side of the two side plates on both the drive shaft and the driven shaft. Gears are provided at both ends of the drive shaft and the driven shaft. The chain plate is arranged to surround the gears on the drive shaft and the driven shaft. A drive motor is installed at one end of the drive shaft. The material frame is arranged on the chain plate. Multiple positioning components for positioning the material frame are spaced apart on the X-axis of the top surface of the transport support. The positioning components include positioning cylinders and positioning parts connected to the telescopic ends of the positioning cylinders.

8. A SiC powder conveying method, applied to the SiC powder conveying equipment according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Feeding: Connect the first feed port of the feeding component to the crushed SiC powder, start the first vacuum mechanism, and the crushed SiC powder is conveyed to the first conical hopper of the feeding component under negative pressure airflow. At this time, the vertical vibrator works and linearly conveys the powder in the first conical hopper to the first rotary vibrating screen through the discharge pipe. S2. Coarse screening of powder: Start the first vibrating screen. The powder in the first and third screen layers after screening is transported to the two first storage mechanisms through pipelines. The powder in the second screen layer is transported to the second vibrating screen through pipelines. S3. Fine screening of powder: Start the second vibrating screen, and further finely screen the powder in the second screen layer through the fourth, fifth and sixth screen layers to obtain three different mesh sizes of powder, which are then transported to the three second storage mechanisms through pipelines respectively. S4. Powder dispensing and transportation: The second vacuum mechanism is activated, and the powder in the second storage mechanism is transported to the second conical hopper under negative pressure airflow. Then, it is transported to the weighing box through the quantitative conveying component. The second unloading cylinder drives the second unloading baffle to move upward to form an opening, and the powder falls into the material frame. Finally, the transportation mechanism transports the dispensed powder to the destination.

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