Anti-blocking drying equipment for silicon carbide micro-powder production

Abstract

The utility model discloses a kind of anti-blocking drying equipment for silicon carbide micro powder production, including support frame, stirring subassembly, it is installed on the support frame, the stirring subassembly includes the drum of installation in support frame upper end, feeding frame, it is installed on the support frame, discharge frame, it is installed on the support frame, anti-blocking subassembly, it is installed on the discharge frame, the anti-blocking subassembly includes the discharge pipe of installation in discharge frame lower end, conveying auger is installed in the discharge pipe, the side of discharge pipe lower end is provided with discharge port;The micro powder after drying can be stirred by the stirring blade in the discharge frame, break agglomeration, conveying auger in discharge pipe can continuously push micro powder and discharge from discharge port, avoid residual accumulation in pipe, can solve the problem of blockage, guarantee equipment continuous stable operation, reduce the downtime cleaning time caused by blockage, improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of drying equipment technology, specifically to an anti-clogging drying device for silicon carbide micro powder production. Background Technology

[0002] Silicon carbide micron powder is an ultrafine powder material produced from silicon carbide raw materials through processes such as crushing, grinding, and grading. Its particle size is typically in the micrometer range. Silicon carbide itself is an inorganic non-metallic material with extremely high hardness, high temperature resistance, and strong chemical stability, possessing excellent thermal conductivity, wear resistance, and semiconductor properties. It is generally used for high-precision polishing and grinding (such as processing sapphire substrates, silicon wafers, and ceramics), as a raw material for high-performance structural ceramics (such as wear-resistant ceramics and high-temperature resistant ceramics) to improve the strength and wear resistance of ceramics, and can also be used in the manufacture of semiconductor devices and silicon carbide power devices, as well as in coatings, refractory materials, and composite materials.

[0003] For example, patent CN118670108B discloses a silicon carbide micro powder drying equipment, including an outer rotating drum, a connecting cover, an inner rotating drum, and a material distribution component. The inner end of the material distribution component is attached to a fixed column. The rotation of the inner rotating drum drives the material distribution component to rotate. Under the restriction of the fixed column, the material distribution component can reciprocate in a telescopic manner when rotating, so that the silicon carbide micro powder is dried in small quantities without clumping, thereby greatly improving the drying speed and thus improving the drying efficiency.

[0004] When the aforementioned patent is used, after the silicon carbide micro powder is dried, when it needs to be discharged, the discharge hole is opened, and the silicon carbide micro powder is gradually conveyed by the discharge inclined plate to the discharge hole of the outer rotating drum and discharged from the discharge hopper. However, the silicon carbide micro powder particles are fine and easily adsorbed on the inner wall of the guide drum or the edge of the discharge hole due to electrostatic attraction. The silicon carbide micro powder may remain and gradually accumulate at the discharge hopper outlet. Since the silicon carbide micro powder drying equipment is not equipped with an anti-clogging function, the silicon carbide micro powder can easily block the discharge hopper outlet. The blockage requires machine shutdown for cleaning, which reduces production efficiency.

[0005] Therefore, it is necessary to design an anti-clogging drying device for silicon carbide micro powder production to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an anti-clogging drying device for silicon carbide micro powder production, so as to solve the problems mentioned in the background art.

[0007] The technical solution adopted by this application to solve its technical problem is: a clog-resistant drying device for silicon carbide micro powder production, including a support frame; A stirring assembly mounted on the support frame, the stirring assembly including a drum mounted on the upper end of the support frame; A feeding frame is installed on the support frame, and a guide plate is installed inside the feeding frame; A discharge frame, which is mounted on the support frame; An anti-clogging component is installed on the discharge frame. The anti-clogging component includes a discharge pipe installed at the lower end of the discharge frame, a conveying auger installed inside the discharge pipe, a discharge port provided on one side of the lower end of the discharge pipe, a positioning frame installed inside the rear end of the roller, a first rotating shaft installed on the positioning frame, a second rotating shaft installed at the lower end of the feeding frame, one end of the second rotating shaft passing through the discharge frame and having multiple stirring blades installed thereon, and a transmission mechanism for driving the first rotating shaft, the second rotating shaft, and the conveying auger to rotate is provided on the first rotating shaft, the second rotating shaft, and the conveying auger. A drying assembly, which is mounted on the feeding frame; A drive assembly, which is mounted on the support frame.

[0008] Furthermore, the transmission mechanism includes a first synchronous wheel fixedly installed at the rear end of the first rotating shaft and the front end of the second rotating shaft. The outer walls of the two first synchronous wheels are fitted with a first synchronous belt. A support plate is provided on the discharge pipe. The second rotating shaft is rotatably connected to the support plate. The rear end of the second rotating shaft and the rear end of the conveying auger are both installed with second synchronous wheels after passing through the discharge pipe. The outer walls of the two second synchronous wheels are fitted with a second synchronous belt.

[0009] Furthermore, mounting brackets are installed at the four corners of the upper end of the support frame, and a guide wheel is rotatably mounted on the upper end of each mounting bracket. Each guide wheel is provided with an arc-shaped groove, and guide rings are installed on the outer walls of both ends of the roller. The guide rings are installed in the arc-shaped grooves on the guide wheels.

[0010] Furthermore, multiple arc-shaped feeding plates are evenly installed on the front end of the inner wall of the roller, and multiple feeding plates are evenly installed on the rear end of the inner wall of the roller.

[0011] Furthermore, the drying assembly includes a mounting box installed at the front end of the feeding frame, a fan installed at the front end inside the mounting box, and a heating tube installed at the rear end inside the mounting box.

[0012] Furthermore, a baffle is hinged to the front end of the mounting box.

[0013] Furthermore, the drive assembly includes a drive motor mounted on the lower end of the support frame, a connecting shaft rotatably mounted on the upper end of the support frame, a large pulley mounted on the outer wall of one end of the connecting shaft, a small pulley mounted on the output end of the drive motor, a belt sleeved on the outer wall of the small pulley and the large pulley, a chain mounted on the outer wall of the middle part of the roller, and a sprocket mounted on the outer wall of the other end of the connecting shaft, the sprocket being engaged with the chain.

[0014] Furthermore, a PLC control module is installed on one side of the upper end of the support frame.

[0015] By adopting the above technical solution, the problem of silicon carbide micro powder drying equipment not having an anti-clogging function, which makes it easy for silicon carbide micro powder to clog the outlet of the discharge hopper, has been solved.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the drying equipment can stir the dried micro powder through the stirring blades in the discharge frame to break up the clumps, and the conveying auger in the discharge pipe can continuously push the micro powder out of the discharge port to avoid residue accumulation in the pipe, which can solve the blockage problem, ensure the continuous and stable operation of the equipment, reduce the downtime cleaning time caused by blockage, and improve production efficiency. Attached Figure Description

[0017] Figure 1 This is a first three-dimensional structural schematic diagram of an anti-clogging drying device for silicon carbide micro powder production according to an embodiment of this application; Figure 2 This is a second three-dimensional structural schematic diagram of an anti-clogging drying device for silicon carbide micro powder production according to an embodiment of this application; Figure 3 This is a schematic diagram of the drying component structure according to an embodiment of this application; Figure 4 This is a schematic diagram of the anti-blocking component according to an embodiment of this application; Figure 5 According to the embodiments of this application Figure 4 A magnified structural diagram of point A in the middle.

[0018] In the diagram: 1. Support frame; 2. Mixing assembly; 21. Drum; 22. Mounting frame; 23. Guide wheel; 24. Guide ring; 25. Arc-shaped feeding plate; 26. Feeding plate; 3. Drying assembly; 31. Mounting box; 32. Fan; 33. Heating tube; 34. Baffle; 4. Anti-blocking assembly; 41. Positioning frame; 42. First rotating shaft; 43. Second rotating shaft; 44. First synchronous pulley; 45. First synchronous belt; 46. Discharge pipe; 47. Conveying auger; 48. Second synchronous pulley; 49. Second synchronous belt; 410. Discharge port; 411. Mixing blades; 5. Drive assembly; 51. Drive motor; 52. Connecting shaft; 53. Small pulley; 54. Large pulley; 55. Belt; 56. Sprocket; 57. Chain; 6. Feeding frame; 7. Discharge frame; 8. Guide plate; 9. PLC control module. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-2 This invention provides a technical solution: an anti-clogging drying device for silicon carbide micro powder production, including a support frame 1. The support frame 1 serves as the basic structure of the device and is welded from high-strength alloy steel, possessing extremely strong load-bearing capacity and stability, effectively supporting the operation of various components of the device. Its surface is treated with sandblasting to remove rust, and then coated with multiple layers of anti-corrosion and wear-resistant coating, enabling it to adapt to humid and dusty production environments and extending the service life of the equipment.

[0021] Please see Figure 1-4 The upper end of the support frame is equipped with a stirring assembly 2, which includes a drum 21 mounted on the upper end of the support frame 1. The drum 21 is a hollow cylinder made of 304 stainless steel, which has good corrosion resistance and wear resistance, and a smooth surface that reduces the adhesion of silicon carbide powder to the drum wall. Mounting brackets 22 are fixedly installed at the four corners of the upper end of the support frame 1. The mounting brackets 22 are made of cast steel, making them sturdy and durable. Each mounting bracket 22 has a guide wheel 23 rotatably mounted on its upper end. The guide wheel 23 is made of high-hardness wear-resistant cast iron, and its axle is equipped with a high-precision bearing to ensure flexible rotation.

[0022] Each guide wheel 23 is provided with an arc-shaped groove, and guide rings 24 are fixedly installed on the outer walls of both ends of the roller 21. The guide rings 24 are welded to the roller 21, and their material is the same as that of the roller 21. The guide rings 24 are installed in the arc-shaped grooves on the guide wheels 23, and the gap between the two is extremely small. This ensures that the roller 21 can rotate smoothly on the support frame 1, and effectively limits the axial displacement of the roller 21, thus ensuring the stability of the equipment operation.

[0023] Multiple arc-shaped feeding plates 25 are uniformly fixedly installed on the front end of the inner wall of the drum 21. The guide plates 8 are made of wear-resistant ceramic material. When the drum 21 rotates, it can convey silicon carbide micro powder to the rear end. At the same time, the micro powder is initially tumbled during the conveying process, so that it can have more full contact with the hot air. Multiple deflecting plates 26 are uniformly fixedly installed on the rear end of the inner wall of the drum 21. The deflecting plates 26 are also made of wear-resistant material and are L-shaped. When the drum 21 rotates, they can completely disperse the silicon carbide micro powder conveyed to the rear end, break up any possible agglomerates, make the micro powder heat more evenly, and improve the drying efficiency.

[0024] A feeding frame 6 is fixedly installed at the front end of the support frame 1. The feeding frame 6 is welded from steel plates and its interior is polished to reduce the residue of micro powder. The rear end of the feeding frame 6 is fitted onto the roller 21, and a high-temperature resistant sealing ring is installed between the two. This ensures that the roller 21 can rotate flexibly inside the feeding frame 6 while preventing dust leakage and hot air loss. A guide plate 8 is fixedly installed at the upper end inside the feeding frame 6. The guide plate 8 is inclined, has a smooth surface, and is made of polytetrafluoroethylene material. It has good non-stick properties and can accurately and smoothly guide the silicon carbide micro powder into the roller 21, avoiding the accumulation of micro powder in the feeding frame 6.

[0025] The rear end of the support frame 1 is fixedly equipped with a discharge frame 7, which is also made of welded steel plate and polished inside. The front end of the discharge frame 7 is sleeved on the roller 21, and a sealing device is also installed between the two for the discharge of silicon carbide micro powder, while preventing the dried micro powder from being contaminated by the outside.

[0026] Please see Figure 5 An anti-blocking component 4 is installed on the discharge frame 7. The anti-blocking component 4 includes a discharge pipe 46 fixedly installed at the lower end of the discharge frame 7. The discharge pipe 46 is made of seamless steel pipe, which is high in strength and not easily deformed. A conveying auger 47 is rotatably installed inside the discharge pipe 46. The blades of the conveying auger 47 are made of wear-resistant steel, and its spiral angle is reasonably designed to effectively convey the dried silicon carbide micro powder. A discharge port 410 is provided on one side of the lower end of the discharge pipe 46 for discharging the dried silicon carbide micro powder.

[0027] A positioning frame 41 is fixedly installed inside the rear end of the drum 21. The positioning frame 41 has a cross-shaped structure and is welded from stainless steel. A first rotating shaft 42 is fixedly installed in the middle of the positioning frame 41. The first rotating shaft 42 is made of high-strength alloy steel and has been heat-treated to have good toughness and strength. A second rotating shaft 43 is rotatably installed at the lower end of the feeding frame 6. The material of the second rotating shaft 43 is the same as that of the first rotating shaft 42. Multiple stirring blades 411 are fixedly installed on the outer wall of the front end of the second rotating shaft 43 after penetrating the discharge frame 7. The stirring blades 411 are made of wear-resistant cast iron and are paddle-shaped. When rotating, they can fully stir the silicon carbide micro powder at the bottom of the discharge frame 7 to prevent the micro powder from clumping and blocking the discharge port 410.

[0028] First synchronous pulleys 44 are fixedly installed at the rear end of the first rotating shaft 42 and the front end of the second rotating shaft 43. These pulleys are made of 45# steel and have undergone surface quenching treatment to improve wear resistance. A first synchronous belt 45 is fitted onto the outer wall of each of the two first synchronous pulleys 44. The synchronous belt is made of polyurethane, which has good elasticity and wear resistance, ensuring stable power transmission. A support plate (not shown in the figure) is installed on the discharge pipe 46, and the support plate is welded to the discharge pipe 46. The second rotating shaft 43 is rotatably connected to the support plate via bearings, ensuring smooth rotation of the second rotating shaft 43.

[0029] Furthermore, a second synchronous pulley 48 is fixedly installed at the rear end of the second rotating shaft 43 and the rear end of the conveying auger 47 after passing through the discharge pipe 46. A second synchronous belt 49, made of the same material as the first synchronous belt 45, is fitted on the outer wall of the two second synchronous pulleys 48. When the drum 21 rotates, it drives the second rotating shaft 43 to rotate through the first rotating shaft 42, the first synchronous pulley 44, and the first synchronous belt 45. In turn, it drives the conveying auger 47 to rotate through the second synchronous pulleys 48 and the second synchronous belt 49, thereby achieving synchronous operation of the stirring blades 411 and the conveying auger 47 and effectively preventing blockage.

[0030] Please see Figure 3 A drying assembly 3 is installed on the feeding frame 6. The drying assembly 3 includes a mounting box 31 fixedly installed at the front end of the feeding frame 6. The mounting box 31 is made of steel plate and has good sealing performance. A fan 32 is fixedly installed at the front end inside the mounting box 31. The fan 32 is a high-temperature resistant axial flow fan, which can effectively deliver heated air into the drum 21. A heating tube 33 is fixedly installed at the rear end inside the mounting box 31. The heating tube 33 is a stainless steel electric heating tube 33, which has high heating efficiency and good stability. A baffle 34 is hinged to the front end of the mounting box 31 to facilitate the inspection and maintenance of the fan 32 and the heating tube 33.

[0031] Please see Figure 4 A drive assembly 5 is installed at the lower end of the support frame 1. The drive assembly 5 includes a drive motor 51 fixedly installed at the lower end of the support frame 1. The motor is a variable frequency speed control motor, which can adjust the speed according to production needs and operates stably with low noise. A connecting shaft 52 is rotatably installed at the upper end of the support frame 1. The connecting shaft 52 is made of high-strength steel and its two ends are connected to the support frame 1 through bearings, allowing for flexible rotation. A large pulley 54 is fixedly installed on the outer wall of one end of the connecting shaft 52, and a small pulley 53 is fixedly installed at the output end of the drive motor 51. Both pulleys are made of cast iron and their surfaces are dynamically balanced. A belt 55 is fitted on the outer wall of the small pulley 53 and the large pulley 54. The belt 55 is a V-belt, which has high transmission efficiency and a certain buffering effect.

[0032] Furthermore, a chain 57 is fixedly installed on the outer wall of the middle part of the roller 21. The chain 57 is a high-strength roller chain that is wear-resistant and durable. A sprocket 56 is fixedly installed on the outer wall of the other end of the connecting shaft 52. The sprocket 56 is meshed with the chain 57. Through the rotation of the drive motor 51, the connecting shaft 52 is driven to rotate via the small pulley 53, the belt 55, and the large pulley 54. Then, through the meshing transmission between the sprocket 56 and the chain 57, the roller 21 is driven to rotate at a suitable speed.

[0033] A PLC control module 9 is fixedly installed on one side of the upper end of the support frame 1. The PLC control module 9 is connected to the drive motor 51, heating tube 33, fan 32, and other equipment via wiring. Operators can set parameters such as the rotation speed of the roller 21, heating temperature, and drying time through the control panel to achieve automated operation of the equipment. At the same time, the PLC control module 9 can also monitor the operating status of the equipment in real time. When abnormalities occur, such as motor overload, excessive temperature, or blockage, it can promptly issue an alarm and automatically shut down the machine to ensure safe operation of the equipment.

[0034] Working principle: First, the silicon carbide micro powder to be dried is fed into the feeding frame 6 and guided by the guide plate 8 to smoothly enter the front end of the drum 21. When the drum 21 rotates, the arc-shaped feeding plate 25 at the front end moves synchronously with the drum wall. Its arc-shaped structure conforms to the flow trajectory of the micro powder. In the process of pushing the micro powder to the rear end, it forms an initial tumbling of the material, breaking the original accumulation state and creating uniform heating conditions for the subsequent drying process.

[0035] After the high-temperature axial flow fan inside the mounting box 31 is started, it draws outside air into the box, which is heated to the set temperature as it flows through the stainless steel electric heating tube 33. The hot air enters the drum 21 through the feeding frame 6, making full contact with the micro powder agitated by the guide plate 8. As the drum 21 rotates, the material is conveyed to the rear end, where the L-shaped material-dispersing plate 26 further breaks up any possible clumps of micro powder, increasing the contact area between the material and the hot air and accelerating moisture evaporation. The drum 21 is made of 304 stainless steel, with a smooth surface that reduces material adhesion. Combined with continuous ventilation, this ensures that the micro powder is dried completely during the conveying process.

[0036] After drying, the micro powder enters the discharge frame 7. At this time, the positioning frame 41 at the rear end of the drum 21 rotates with the drum body, driving the first rotating shaft 42 to rotate synchronously. The first rotating shaft 42 drives the second rotating shaft 43 to rotate through the first synchronous wheel 44 and the first synchronous belt 45, causing the paddle-type stirring blades 411 in the discharge frame 7 to rotate at high speed, stirring the material at the bottom and preventing agglomeration and blockage. At the same time, the second synchronous wheel 48 at the rear end of the second rotating shaft 43 drives the conveying auger 47 to rotate through the second synchronous belt 49. The auger blades push the stirred micro powder to the discharge port 410 at the lower end of the discharge pipe 46, realizing continuous and smooth discharge.

[0037] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clog-resistant drying device for silicon carbide micro powder production, characterized in that: include Support frame (1); A stirring assembly (2) is mounted on the support frame (1), the stirring assembly (2) including a roller (21) mounted on the upper end of the support frame (1). A feeding frame (6) is installed on the support frame (1), and a guide plate (8) is installed inside the feeding frame (6). The discharge frame (7) is mounted on the support frame (1); An anti-blocking component (4) is installed on the discharge frame (7). The anti-blocking component (4) includes a discharge pipe (46) installed at the lower end of the discharge frame (7). A conveying auger (47) is installed inside the discharge pipe (46). A discharge port (410) is provided on one side of the lower end of the discharge pipe (46). A positioning frame (41) is installed inside the rear end of the roller (21). A first rotating shaft (42) is installed on the positioning frame (41). A second rotating shaft (43) is installed at the lower end of the feeding frame (6). One end of the second rotating shaft (43) passes through the discharge frame (7) and is equipped with multiple stirring blades (411). A transmission mechanism for driving the first rotating shaft (42), the second rotating shaft (43) and the conveying auger (47) to rotate is provided on the first rotating shaft (42), the second rotating shaft (43) and the conveying auger (47). A drying assembly (3) is mounted on the feeding frame (6); The drive assembly (5) is mounted on the support frame (1).

2. The anti-clogging drying equipment for silicon carbide micro powder production according to claim 1, characterized in that: The transmission mechanism includes a first synchronous wheel (44) fixedly installed at the rear end of the first rotating shaft (42) and the front end of the second rotating shaft (43). The outer walls of the two first synchronous wheels (44) are fitted with a first synchronous belt (45). A support plate is provided on the discharge pipe (46). The second rotating shaft (43) is rotatably connected to the support plate. The rear end of the second rotating shaft (43) and the rear end of the conveying auger (47) are both fitted with second synchronous wheels (48) after passing through the discharge pipe (46). The outer walls of the two second synchronous wheels (48) are fitted with a second synchronous belt (49).

3. The anti-clogging drying equipment for silicon carbide micro powder production according to claim 1, characterized in that: Mounting brackets (22) are installed at the four corners of the upper end of the support frame (1). Each mounting bracket (22) has a guide wheel (23) rotatably mounted on its upper end. Each guide wheel (23) has an arc-shaped groove. Guide rings (24) are installed on the outer walls of both ends of the roller (21). The guide rings (24) are installed in the arc-shaped grooves on the guide wheels (23).

4. The anti-clogging drying equipment for silicon carbide micro powder production according to claim 3, characterized in that: Multiple arc-shaped feeding plates (25) are evenly installed on the front end of the inner wall of the roller (21), and multiple feeding plates (26) are evenly installed on the rear end of the inner wall of the roller (21).

5. The anti-clogging drying equipment for silicon carbide micro powder production according to claim 1, characterized in that: The drying assembly (3) includes a mounting box (31) installed at the front end of the feeding frame (6), a fan (32) is installed at the front end inside the mounting box (31), and a heating tube (33) is installed at the rear end inside the mounting box (31).

6. The anti-clogging drying equipment for silicon carbide micro powder production according to claim 5, characterized in that: The front end of the mounting box (31) is hinged to a baffle (34).

7. The anti-clogging drying equipment for silicon carbide micro powder production according to claim 1, characterized in that: The drive assembly (5) includes a drive motor (51) installed at the lower end of the support frame (1), a connecting shaft (52) rotatably installed at the upper end of the support frame (1), a large pulley (54) installed on the outer wall of one end of the connecting shaft (52), a small pulley (53) installed at the output end of the drive motor (51), a belt (55) is driven on the outer wall of the small pulley (53) and the large pulley (54), a chain (57) is installed on the outer wall of the middle part of the roller (21), and a sprocket (56) is installed on the outer wall of the other end of the connecting shaft (52), and the sprocket (56) is meshed with the chain (57).

8. The anti-clogging drying equipment for silicon carbide micro powder production according to claim 1, characterized in that: A PLC control module (9) is installed on one side of the upper end of the support frame (1).

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