Silicon carbide rod extrusion device

Abstract

The utility model discloses a silicon carbide rod extrusion device which comprises a diameter-variable extrusion nozzle, a shell, a silicon carbide mud conveying and cleaning mechanism and an installation frame, the shell is installed at the top end of the installation frame, the diameter-variable extrusion nozzle used for extrusion forming of silicon carbide mud is installed on the end wall of one end of the shell, and the silicon carbide mud conveying and cleaning mechanism is arranged on the shell. The silicon carbide mud conveying and cleaning mechanism is formed by combining a driving assembly, a conveying assembly, a cleaning assembly and a pushing assembly. After a silicon carbide rod is extruded, a worker can conveniently clean residual silicon carbide mud on the inner wall of the shell and conveniently clean residual silicon carbide mud on the internal structure of the shell; and the situation that the quality of next extrusion forming of the silicon carbide rod is affected due to caking and hardening of the residual silicon carbide mud caused by the fact that the residual silicon carbide mud on the inner wall of the shell and the residual silicon carbide mud on the internal structure of the shell are not cleaned up is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of silicon carbide rod production, in particular to a silicon carbide rod extrusion device. Background Art

[0002] Silicon carbide rod extrusion is a complex process that requires the control of multiple parameters to achieve high-quality finished products. The process primarily involves raw material proportioning, mixing, drying, extrusion, and sintering. Extrusion is a key step, requiring the use of a spiral extruder.

[0003] After searching, the patent announcement number CN219294683U discloses a PET spiral extrusion device, including a workbench, an extrusion barrel is installed on the end face of the workbench, a feed port is opened on the end face of the extrusion barrel, a crushing assembly is installed on the end face of the extrusion barrel corresponding to the feed port, and the crushing assembly includes a crushing box, a first rotating shaft and a second rotating shaft are respectively installed on the crushing box, and a main cutter wheel is installed on the outer wall of the first rotating shaft and in the inner cavity of the crushing box. By arranging the crushing assembly and the discharge assembly in the extrusion device, the problem of insufficient crushing of the material entering the extrusion barrel and the inability to control the amount of discharge from the feed port, which leads to material accumulation, is solved, so that the extrusion device can be used more effectively.

[0004] In actual use of the existing silicon carbide rod extrusion device, after the silicon carbide rod extrusion device completes the extrusion of the silicon carbide rod and stops for a period of time, a certain amount of silicon carbide mud remains on the inner wall and internal structure of the equipment. At present, when the staff cleans the silicon carbide mud remaining in the equipment, they generally transport the cleaning liquid into the equipment for transportation and cleaning. This cleaning method wastes a lot of water resources, and the silicon carbide mud remaining on the inner wall and internal structure of the equipment is not cleaned thoroughly, which can easily cause the remaining silicon carbide mud to clump and harden, thereby affecting the quality of the next silicon carbide rod extrusion molding. Therefore, a silicon carbide rod extrusion device is designed. Utility Model Content

[0005] In response to the defects or shortcomings of the silicon carbide rod extrusion device, the purpose of the present invention is to provide a silicon carbide rod extrusion device, which makes it convenient for staff to clean the silicon carbide mud remaining on the inner wall of the shell and the silicon carbide mud remaining on the internal structure of the shell, thereby avoiding the silicon carbide mud remaining on the inner wall of the shell and the silicon carbide mud remaining on the internal structure of the shell not being cleaned up, causing the remaining silicon carbide mud to clump and harden, thereby affecting the quality of the next silicon carbide rod extrusion molding.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] The utility model provides a silicon carbide rod extrusion device, comprising a diameter-changing extrusion nozzle, a shell, a silicon carbide mud conveying and cleaning mechanism, and a mounting frame. The shell is installed on the top of the mounting frame, and the end wall of one end of the shell is installed with a diameter-changing extrusion nozzle for silicon carbide mud extrusion molding, and the shell is provided with a silicon carbide mud conveying and cleaning mechanism.

[0008] The silicon carbide mud conveying and cleaning mechanism is composed of a driving component, a conveying component, a cleaning component and a pushing component, wherein the driving component is used to drive the conveying component to convey the silicon carbide mud into the diameter-changing extrusion nozzle for extrusion molding and to drive the cleaning component to scrape the residual silicon carbide mud on the inner wall of the shell, and the pushing component is used to push the cleaning component, the conveying component and the driving component to move along the axial direction of the shell.

[0009] Preferably, the pushing assembly is provided with an end cover plate, which is arranged on the end wall of the other end of the shell, a movable frame is installed at the bottom end of the end cover plate, and a roller is installed at the bottom end of the movable frame, a hydraulic telescopic rod is installed on one side outer wall of the movable frame, and the hydraulic telescopic rod is installed at the inner bottom end of the mounting frame;

[0010] Guide rods are installed at both the front and rear ends of the outer wall of one side of the end cover plate, and the other end of the guide rod passes through the through hole on the outer wall of the guide block. There is a clearance fit between the outer wall of the guide rod and the hole wall of the through hole, and the guide block is installed at the front and rear ends of the circumferential outer wall of the shell;

[0011] A second annular sealing block is installed on the outer wall of one side of the end cover plate, and the other end of the second annular sealing block is installed in the second annular sealing groove. The second annular sealing groove is opened on the end wall of the other end of the shell, and a sealing ring is provided between the other end of the second annular sealing block and the inner end of the second annular sealing groove.

[0012] Preferably, the conveying assembly is composed of a hollow rotating shaft, a spiral blade and a third circular gear, wherein the spiral blade is located inside the shell and is arranged on the outer wall of the hollow rotating shaft, one end of the hollow rotating shaft passes through the bearing on the outer wall of the end cover plate and extends to the outside, and the third circular gear is installed on the circumferential outer wall of one end of the hollow rotating shaft;

[0013] The cleaning assembly is provided with a scraper, the scraper is located inside the shell, and there is a gap fit between the outer wall of the scraper and the inner wall of the shell, and the circumferential inner wall of the scraper is connected to the circumferential outer wall of the annular connecting plate by a first connecting rod, and the end walls at both ends of the annular connecting plate are respectively installed with a first annular rotating plate and a second annular rotating plate, the circumferential inner wall of the annular connecting plate is connected to the circumferential outer wall of one end of the fourth rotating shaft by a second connecting rod, one end of the fourth rotating shaft is installed in a bearing on the circumferential inner wall of the first annular rotating plate, the other end of the fourth rotating shaft passes through the interior of the hollow rotating shaft and the bearing in the hollow rotating shaft and extends to the outside, and a fourth circular gear is installed on the circumferential outer wall of the other end of the fourth rotating shaft;

[0014] The other end of the hollow rotating shaft is installed in a bearing on the circumferential inner wall of the second annular rotating plate.

[0015] Preferably, a mounting plate is provided on the drive assembly, and the mounting plate is installed under the outer wall of the other side of the end cover plate, and the upper surface of the mounting plate is sequentially installed with the first side plate, the second side plate, the reduction motor and the third side plate, and the third rotating shaft, the second rotating shaft and the first rotating shaft are respectively installed in the bearings on the outer walls of the first side plate, the second side plate and the third side plate, and the second circular gear, the second bevel gear and the first circular gear are respectively installed on the outer walls of the third rotating shaft, the second rotating shaft and the first rotating shaft, the second bevel gear and the first circular gear are meshed with each other, and the first bevel gear is installed on the output shaft of the reduction motor, the second circular gear is meshed with the third circular gear, and the first circular gear is meshed with the fourth circular gear.

[0016] Preferably, the third rotating shaft and the end wall of one end of the first rotating shaft are both provided with a first groove, the first electromagnet is installed at one end inside the first groove, a first limiting groove is provided on the circumferential inner wall of the first groove, and the first limiting grooves are distributed in a ring array, the end walls at both ends of the second rotating shaft are both provided with a second groove, the second electromagnet is installed at one end inside the second groove, and a slider is provided inside the second groove, and the outer wall of the slider is clearance fit with the groove wall of the first groove and the groove wall of the second groove, iron blocks are installed on the end walls at both ends of the slider, limiting blocks are installed on the circumferential outer wall of the slider, and the limiting blocks are distributed in a ring array, a second limiting groove is provided on the groove wall of the second groove, and the second limiting grooves are distributed in a ring array, and the outer wall of the limiting block is clearance fit with the groove wall of the first limiting groove and the groove wall of the second limiting groove.

[0017] Preferably, a first annular sealing block is installed on the end wall of one end of the diameter-changing extrusion nozzle, and the other end of the first annular sealing block is installed in a first annular sealing groove. The first annular sealing groove is opened on the end wall of one end of the shell, and a sealing ring is provided between the other end of the first annular sealing block and the inner end of the first annular sealing groove.

[0018] Preferably, a first flange connecting plate is installed on the circumferential outer wall of one end of the diameter-changing extrusion nozzle, the first flange connecting plate is fixedly connected to the second flange connecting plate by fastening bolts, and the second flange connecting plate is installed on the circumferential outer wall of one end of the shell, and a feed trough is provided on the top side of the circumferential outer wall of the shell.

[0019] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0020] In the present invention, through the coordinated arrangement of a series of structures, when the staff has completed the production of the silicon carbide rod and needs to clean the inner wall of the shell and the structure existing in the shell, the staff first disassembles the variable diameter extrusion nozzle, the staff starts the driving assembly and drives the cleaning assembly to rotate by controlling the driving assembly, and then the staff starts the hydraulic telescopic rod on the pushing assembly. When the hydraulic telescopic rod is extended and retracted, it drives the cleaning assembly to move along the axial direction of the shell. When the staff drives the hydraulic telescopic rod to move the cleaning assembly to the right, the cleaning assembly is in a rotating state and a state of moving straight to the right, and the cleaning assembly can The silicon carbide mud remaining on the circumferential inner wall of the shell is scraped off and pushed out. When the conveying component and the cleaning component are both in the external environment, the staff can perform cleaning operations on the conveying component and the cleaning component. Therefore, after the silicon carbide rod is extruded, the utility model is convenient for the staff to clean the silicon carbide mud remaining on the inner wall of the shell and the silicon carbide mud remaining on the internal structure of the shell, thereby avoiding the silicon carbide mud remaining on the inner wall of the shell and the silicon carbide mud remaining on the internal structure of the shell not being cleaned up, so that the residual silicon carbide mud becomes agglomerated and hardened, which affects the quality of the next silicon carbide rod extrusion molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 It is a cross-sectional view of the entire utility model.

[0023] Figure 2 It is a structural diagram of the silicon carbide mud conveying and cleaning mechanism of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the conveying component of the utility model.

[0025] Figure 4 It is a cross-sectional view of the conveying component of the present utility model.

[0026] Figure 5 It is a structural diagram of the cleaning component of the utility model.

[0027] Figure 6 It is a cross-sectional view of the cleaning component of the present invention.

[0028] Figure 7 It is a structural diagram of the propulsion assembly of the utility model;

[0029] Figure 8 It is a structural diagram of the drive assembly of the utility model.

[0030] Figure 9 It is a cross-sectional view of the drive assembly of the utility model.

[0031] Figure 10 This utility model Figure 9 Schematic diagram of the locally enlarged structure at point A in the figure.

[0032] Figure 11 This is a schematic diagram of the overall three-dimensional structure of the utility model Figure 1 .

[0033] Figure 12 This is a schematic diagram of the overall three-dimensional structure of the utility model Figure 2 .

[0034] Figure 13 It is a structural schematic diagram of the diameter-changing extrusion nozzle of the utility model.

[0035] Figure 14 It is a cross-sectional view of the diameter-changing extrusion nozzle of the present invention.

[0036] Figure 15 It is a structural schematic diagram of the shell of the utility model.

[0037] Figure 16 It is a cross-sectional view of the shell of the utility model.

[0038] In the picture:

[0039] 100, diameter-changing extrusion nozzle; 110, first flange connection plate; 120, first annular sealing block;

[0040] 200, housing; 210, feed trough; 220, guide block; 221, through hole; 230, second flange connection plate; 240, first annular sealing groove; 250, second annular sealing groove;

[0041] 300. Silicon carbide mud conveying and cleaning mechanism;

[0042] 310, drive assembly; 311, mounting plate; 3111, first side plate; 3112, second side plate; 3113, third side plate; 312, reduction motor; 3121, first bevel gear; 313, first rotating shaft; 3131, first circular gear; 314, second rotating shaft; 3141, second bevel gear; 3142, slider; 3143, second electromagnet; 3144, second groove; 3145, limit block; 3146, iron block; 3147, second limit groove; 315, third rotating shaft; 3151, second circular gear; 3152, first electromagnet; 3153, first groove; 3154, first limit groove;

[0043] 320, conveying assembly; 321, spiral blade; 322, third circular gear; 323, hollow shaft;

[0044] 330, cleaning assembly; 331, fourth circular gear; 332, fourth rotating shaft; 333, scraper; 334, first connecting rod; 335, first annular rotating plate; 336, annular connecting plate; 337, second annular rotating plate; 338, second connecting rod;

[0045] 340, pushing assembly; 341, end cover plate; 342, second annular sealing block; 343, guide rod; 344, moving frame; 345, roller; 346, hydraulic telescopic rod;

[0046] 400. Mounting frame. DETAILED DESCRIPTION

[0047] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0048] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] like Figure 1-16As shown, a silicon carbide rod extrusion device includes a diameter-changing extrusion nozzle 100, a shell 200, a silicon carbide mud conveying and cleaning mechanism 300, and a mounting frame 400. The shell 200 is mounted on the top of the mounting frame 400. The diameter-changing extrusion nozzle 100 for extruding silicon carbide mud is mounted on the end wall of one end of the shell 200, and the silicon carbide mud conveying and cleaning mechanism 300 is provided on the shell 200.

[0051] The silicon carbide mud conveying and cleaning mechanism 300 is composed of a driving component 310, a conveying component 320, a cleaning component 330 and a pushing component 340, wherein the driving component 310 is used to drive the conveying component 320 to convey the silicon carbide mud to the diameter-changing extrusion nozzle 100 for extrusion molding and to drive the cleaning component 330 to scrape the residual silicon carbide mud on the inner wall of the shell 200, and the pushing component 340 is used to push the cleaning component 330, the conveying component 320 and the driving component 310 to move along the axial direction of the shell 200.

[0052] An end cover plate 341 is provided on the pushing component 340, and the end cover plate 341 is provided on the end wall of the other end of the shell 200. A movable frame 344 is installed at the bottom end of the end cover plate 341, and a roller 345 is installed at the bottom end of the movable frame 344. A hydraulic telescopic rod 346 is installed on the outer wall of one side of the movable frame 344, and the hydraulic telescopic rod 346 is installed at the inner bottom end of the mounting frame 400. The coordinated arrangement of the roller 345, the movable frame 344 and other structures not only enables the end cover plate 341 to have the function of moving, but also supports the end cover plate 341 and other structures. When the hydraulic telescopic rod 346 starts to extend and retract, it will drive the end cover plate 341 and other structures to perform linear motion in the X-axis direction.

[0053] A guide rod 343 is installed at both the front and rear ends of the outer wall of one side of the end cover plate 341. The other end of the guide rod 343 passes through the through hole 221 on the outer wall of the guide block 220. There is a clearance fit between the outer wall of the guide rod 343 and the hole wall of the through hole 221. The guide block 220 is installed at the front and rear ends of the circumferential outer wall of the housing 200. Due to the clearance fit between the outer wall of the guide rod 343 and the hole wall of the through hole 221, the movement of the end cover plate 341 and other structures can be limited and guided, thereby enhancing the stability of the end cover plate 341 and other structures during movement.

[0054] A second annular sealing block 342 is installed on the outer wall of one side of the end cover plate 341, and the other end of the second annular sealing block 342 is installed in the second annular sealing groove 250. The second annular sealing groove 250 is opened on the end wall of the other end of the shell 200, and a sealing ring is provided between the other end of the second annular sealing block 342 and the inner end of the second annular sealing groove 250. The coordinated arrangement of the end cover plate 341, the second annular sealing block 342, the second annular sealing groove 250, the sealing ring and other structures can seal the connection between the end cover plate 341 and the shell 200.

[0055] The conveying assembly 320 is composed of a hollow rotating shaft 323, a spiral blade 321, and a third circular gear 322. The spiral blade 321 is located inside the housing 200 and is arranged on the outer wall of the hollow rotating shaft 323. One end of the hollow rotating shaft 323 passes through the bearing on the outer wall of the end cover plate 341 and extends to the outside. A third circular gear 322 is installed on the circumferential outer wall of one end of the hollow rotating shaft 323. When the driving assembly 310 drives the third circular gear 322 to rotate, it also drives the hollow rotating shaft 323 and the spiral blade 321 to rotate. When the spiral blade 321 rotates, it can convey the silicon carbide mud.

[0056] The cleaning assembly 330 is provided with a scraper 333, which is located inside the shell 200. The outer wall of the scraper 333 is clearance-matched with the inner wall of the shell 200. Because the outer wall of the scraper 333 is clearance-matched with the inner wall of the shell 200, the scraper 333 can scrape off the silicon carbide mud remaining on the circumferential inner wall of the shell 200. The circumferential inner wall of the scraper 333 is connected to the circumferential outer wall of the annular connecting plate 336 through the first connecting rod 334. The end walls of the two ends of the annular connecting plate 336 are respectively installed with a first annular rotating plate 335 and a second annular rotating plate 337. The circumferential inner wall of the annular connecting plate 336 is connected to the circumferential outer wall of one end of the fourth rotating shaft 332 through the second connecting rod 338. One end of the fourth rotating shaft 332 The fourth rotating shaft 332 is installed in a bearing on the circumferential inner wall of the first annular rotating plate 335. The other end of the fourth rotating shaft 332 passes through the interior of the hollow rotating shaft 323 and the bearing in the hollow rotating shaft 323 extends to the outside. A fourth circular gear 331 is installed on the circumferential outer wall of the other end of the fourth rotating shaft 332. When the driving assembly 310 drives the fourth circular gear 331 to rotate, it drives the fourth rotating shaft 332 to rotate. When the fourth rotating shaft 332 rotates, it drives the annular connecting plate 336 to rotate through the second connecting rod 338. When the annular connecting plate 336 rotates, it drives the scraper 333 to rotate through the first connecting rod 334. When the scraper 333 is in a rotating state and moves to the right, it can effectively remove the silicon carbide mud remaining on the circumferential inner wall of the shell 200;

[0057] The other end of the hollow rotating shaft 323 is installed in a bearing on the circumferential inner wall of the second annular rotating plate 337 .

[0058] The drive assembly 310 is provided with a mounting plate 311, and the mounting plate 311 is installed below the outer wall of the other side of the end cover plate 341. The upper surface of the mounting plate 311 is sequentially mounted with a first side plate 3111, a second side plate 3112, a reduction motor 312 and a third side plate 3113 from left to right. The third rotating shaft 315, the second rotating shaft 314 and the first rotating shaft 313 are respectively mounted in the bearings on the outer walls of the first side plate 3111, the second side plate 3112 and the third side plate 3113. The second circular gear 3151, the second bevel gear 3141 and the first circular gear 3131 are respectively installed on the outer walls of 315, the second rotating shaft 314 and the first rotating shaft 313, the second bevel gear 3141 is meshed and connected with the first bevel gear 3121, and the first bevel gear 3121 is installed on the output shaft of the reduction motor 312, the second circular gear 3151 is meshed and connected with the third circular gear 322, and the first circular gear 3131 is meshed and connected with the fourth circular gear 331.

[0059] The third rotating shaft 315 and the end wall of one end of the first rotating shaft 313 are both provided with a first groove 3153, and the first electromagnet 3152 is installed at one end of the inner side of the first groove 3153. A first limiting groove 3154 is provided on the circumferential inner wall of the first groove 3153, and the first limiting grooves 3154 are distributed in a ring array. The end walls at both ends of the second rotating shaft 314 are both provided with a second groove 3144, and the second electromagnet 3143 is installed at one end of the inner side of the second groove 3144. A slider 3142 is provided inside the second groove 3144, and the outer wall of the slider 3142 is clearance-fitted with the groove wall of the first groove 3153 and the groove wall of the second groove 3144. Iron blocks 3146 are installed on the end walls at both ends of the slider 3142. A limiting block 3145 is installed on the circumferential outer wall of 142, and the limiting blocks 3145 are distributed in a ring array. A second limiting groove 3147 is opened on the groove wall of the second groove 3144, and the second limiting groove 3147 is distributed in a ring array. The outer wall of the limiting block 3145 and the groove wall of the first limiting groove 3154 and the groove wall of the second limiting groove 3147 are all clearance fit. Because the outer wall of the slider 3142 and the groove wall of the first groove 3153 and the groove wall of the second groove 3144 are all clearance fit, the outer wall of the limiting block 3145 and the groove wall of the first limiting groove 3154 and the groove wall of the second limiting groove 3147 are all clearance fit, which can play a role in limiting and guiding the movement of the slider 3142. When the independent driving conveying component 320 or the cleaning component 330 rotates, the staff makes the first electromagnet 3152 on the third rotating shaft 315 be in the state of being energized and magnetic, and the second electromagnet 3143 on the second rotating shaft 314 and the first electromagnet 3152 on the first rotating shaft 313 are in the state of being de-energized and non-magnetic. At this time, the first electromagnet 3152 on the third rotating shaft 315 will absorb the iron block 3146 in the second groove 3144 at one end of the second rotating shaft 314. When a part of the slider 3142 in the second groove 3144 at one end of the second rotating shaft 314 moves into the first groove 3153 on the third rotating shaft 315, the third rotating shaft 315 and the second rotating shaft 314 are in a connected state. The operator makes the first electromagnet 3152 on the first rotating shaft 313 be in a state of being energized and magnetic, and the second electromagnet 3143 on the second rotating shaft 314 and the first electromagnet 3152 on the third rotating shaft 315 be in a state of being de-energized and non-magnetic. At this time, the first electromagnet 3152 on the first rotating shaft 313 attracts the iron block 3146 in the second groove 3144 at the other end of the second rotating shaft 314. When a part of the slider 3142 in the second groove 3144 at the other end of the second rotating shaft 314 moves into the first groove 3153 on the first rotating shaft 313, the first rotating shaft 313 and the second rotating shaft 314 are in a connected state. When the reduction motor 312 is started, it drives the first bevel gear 3121 to rotate.When the first bevel gear 3121 rotates, it drives the second bevel gear 3141 to rotate. When the second bevel gear 3141 rotates, it drives the second rotating shaft 314 to rotate. When the third rotating shaft 315 and the second rotating shaft 314 are in a connected state, the reduction motor 312 is started to drive the second circular gear 3151 on the third rotating shaft 315 to rotate. When the second circular gear 3151 rotates, it drives the third circular gear 322 on the conveying assembly 320 to rotate. When the second rotating shaft 314 and the first rotating shaft 313 are in a connected state, the reduction motor 312 is started to drive the first circular gear 3131 on the outer wall of the first rotating shaft 313 to rotate. When the first circular gear 3131 rotates, it drives the fourth circular gear 331 on the cleaning assembly 330 to rotate.

[0060] A first annular sealing block 120 is installed on the end wall of one end of the diameter-changing extrusion nozzle 100, and the other end of the first annular sealing block 120 is installed in the first annular sealing groove 240. The first annular sealing groove 240 is opened on the end wall of one end of the shell 200, and a sealing ring is provided between the other end of the first annular sealing block 120 and the inner end of the first annular sealing groove 240. The coordinated arrangement of the first annular sealing block 120, the first annular sealing groove 240, the sealing ring and other structures can seal the connection between the diameter-changing extrusion nozzle 100 and the shell 200.

[0061] A first flange connection plate 110 is installed on the circumferential outer wall of one end of the diameter-changing extrusion nozzle 100. The first flange connection plate 110 is fixedly connected to the second flange connection plate 230 by fastening bolts, and the second flange connection plate 230 is installed on the circumferential outer wall of one end of the shell 200. Since the first flange connection plate 110 is fixedly connected to the second flange connection plate 230 by fastening bolts, the staff can disassemble, clean or replace the diameter-changing extrusion nozzle 100. A feed trough 210 is provided on the top side of the circumferential outer wall of the shell 200, and the staff can transport silicon carbide mud from the feed trough 210 to the interior of the shell 200.

[0062] Working principle: When in use, turn on the external power supply. When the staff extrude the silicon carbide rod, the staff starts the drive component 310 and drives the conveying component 320 to rotate by controlling the drive component 310. When the staff conveys the silicon carbide mud from the feed trough 210 to the inside of the shell 200, the spiral blade 321 on the conveying component 320 rotates to convey the silicon carbide mud, and the silicon carbide mud is conveyed to the diameter-changing extrusion nozzle 100 for extrusion and molding output. When the staff completes the production of the silicon carbide rod and needs to clean the inner wall of the shell 200 and the existing structure of the shell 200, the staff first disassembles the diameter-changing extrusion nozzle 100, and the staff starts the drive component 310 and drives the conveying component 320 to rotate. After the controlled driving component 310 drives the cleaning component 330 to rotate, the staff then starts the hydraulic telescopic rod 346 on the pushing component 340. When the hydraulic telescopic rod 346 is extended and retracted, it drives the cleaning component 330 to move along the axial direction of the shell 200. When the staff drives the hydraulic telescopic rod 346 to move the cleaning component 330 to the right, the cleaning component 330 is in a rotating state and a straight line moving to the right. The cleaning component 330 can scrape and push out the silicon carbide mud remaining on the circumferential inner wall of the shell 200. When the conveying component 320 and the cleaning component 330 are both in the external environment, the staff can perform cleaning operations on the conveying component 320 and the cleaning component 330.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A silicon carbide rod extrusion device, comprising a variable diameter extrusion nozzle (100), a housing (200), a silicon carbide mud conveying and cleaning mechanism (300) and a mounting frame (400), characterized in that: A housing (200) is installed at the top of the mounting frame (400), a diameter-changing extrusion nozzle (100) for extruding silicon carbide mud is installed on an end wall of one end of the housing (200), and a silicon carbide mud conveying and cleaning mechanism (300) is provided on the housing (200); The silicon carbide mud conveying and cleaning mechanism (300) is composed of a driving component (310), a conveying component (320), a cleaning component (330) and a pushing component (340), wherein the driving component (310) is used to drive the conveying component (320) to convey the silicon carbide mud into the diameter-changing extrusion nozzle (100) for extrusion molding and to drive the cleaning component (330) to scrape the residual silicon carbide mud on the inner wall of the shell (200), and the pushing component (340) is used to push the cleaning component (330), the conveying component (320) and the driving component (310) to move along the axial direction of the shell (200).

2. The silicon carbide rod extrusion device according to claim 1, characterized in that: The pushing assembly (340) is provided with an end cover plate (341), which is arranged on the end wall of the other end of the housing (200), a movable frame (344) is installed at the bottom end of the end cover plate (341), and a roller (345) is installed at the bottom end of the movable frame (344), a hydraulic telescopic rod (346) is installed on the outer wall of one side of the movable frame (344), and the hydraulic telescopic rod (346) is installed at the inner bottom end of the mounting frame (400); Guide rods (343) are installed at both the front and rear ends of the outer wall of one side of the end cover plate (341), and the other end of the guide rod (343) passes through the through hole (221) on the outer wall of the guide block (220). There is a clearance fit between the outer wall of the guide rod (343) and the hole wall of the through hole (221), and the guide block (220) is installed at the front and rear ends of the circumferential outer wall of the housing (200); A second annular sealing block (342) is mounted on an outer wall of one side of the end cover plate (341), and the other end of the second annular sealing block (342) is mounted in a second annular sealing groove (250). The second annular sealing groove (250) is formed on an end wall at the other end of the housing (200), and a sealing ring is provided between the other end of the second annular sealing block (342) and an inner end of the second annular sealing groove (250).

3. The silicon carbide rod extrusion device according to claim 1, characterized in that: The conveying assembly (320) is composed of a hollow rotating shaft (323), a spiral blade (321), and a third circular gear (322), wherein the spiral blade (321) is located inside the housing (200), and the spiral blade (321) is arranged on the outer wall of the hollow rotating shaft (323); one end of the hollow rotating shaft (323) passes through the bearing on the outer wall of the end cover plate (341) and extends to the outside, and the third circular gear (322) is installed on the circumferential outer wall of one end of the hollow rotating shaft (323); The cleaning assembly (330) is provided with a scraper (333), which is located inside the housing (200). The outer wall of the scraper (333) and the inner wall of the housing (200) are clearance-fitted. The circumferential inner wall of the scraper (333) is connected to the circumferential outer wall of the annular connecting plate (336) via a first connecting rod (334). The end walls at both ends of the annular connecting plate (336) are respectively provided with a first annular rotating plate (335) and a second annular rotating plate (337). The circumferential inner wall of the annular connecting plate (336) is connected to the circumferential outer wall of one end of the fourth rotating shaft (332) via a second connecting rod (338); one end of the fourth rotating shaft (332) is mounted in a bearing on the circumferential inner wall of the first annular rotating plate (335); the other end of the fourth rotating shaft (332) passes through the interior of the hollow rotating shaft (323) and the bearing in the hollow rotating shaft (323) and extends to the outside; and a fourth circular gear (331) is mounted on the circumferential outer wall of the other end of the fourth rotating shaft (332); The other end of the hollow rotating shaft (323) is mounted in a bearing on the circumferential inner wall of the second annular rotating plate (337).

4. The silicon carbide rod extrusion device according to claim 1, characterized in that: The drive assembly (310) is provided with a mounting plate (311), and the mounting plate (311) is mounted below the outer wall of the other side of the end cover plate (341). The upper surface of the mounting plate (311) is sequentially mounted with a first side plate (3111), a second side plate (3112), a reduction motor (312), and a third side plate (3113) from left to right. The third rotating shaft (315), the second rotating shaft (314), and the first rotating shaft (313) are respectively mounted in the bearings on the outer walls of the first side plate (3111), the second side plate (3112), and the third side plate (3113). A second circular gear (3151), a second bevel gear (3141) and a first circular gear (3131) are respectively mounted on the outer walls of the rotating shaft (315), the second rotating shaft (314) and the first rotating shaft (313). The second bevel gear (3141) is meshedly connected with the first bevel gear (3121), and the first bevel gear (3121) is mounted on the output shaft of the reduction motor (312). The second circular gear (3151) is meshedly connected with the third circular gear (322), and the first circular gear (3131) is meshedly connected with the fourth circular gear (331).

5. The silicon carbide rod extrusion device according to claim 4, characterized in that: The end walls of the third rotating shaft (315) and one end of the first rotating shaft (313) are both provided with a first groove (3153), the inner end of the first groove (3153) is equipped with a first electromagnet (3152), the circumferential inner wall of the first groove (3153) is provided with a first limiting groove (3154), and the first limiting grooves (3154) are distributed in a ring array, the end walls of both ends of the second rotating shaft (314) are both provided with a second groove (3144), the inner end of the second groove (3144) is equipped with a second electromagnet (3143), and a slider (3142) is provided inside the second groove (3144), and the outer surface of the slider (3142) is provided with a first limiting groove (3154). There is a clearance fit between the wall and the groove wall of the first groove (3153) and the groove wall of the second groove (3144), iron blocks (3146) are installed on the end walls of both ends of the slider (3142), and a limiting block (3145) is installed on the circumferential outer wall of the slider (3142), and the limiting blocks (3145) are distributed in a ring array, a second limiting groove (3147) is opened on the groove wall of the second groove (3144), and the second limiting grooves (3147) are distributed in a ring array, and the outer wall of the limiting block (3145) and the groove wall of the first limiting groove (3154) and the groove wall of the second limiting groove (3147) are all clearance fit.

6. The silicon carbide rod extrusion device according to claim 1, characterized in that: A first annular sealing block (120) is installed on the end wall of one end of the diameter-changing extrusion nozzle (100), and the other end of the first annular sealing block (120) is installed in a first annular sealing groove (240). The first annular sealing groove (240) is opened on the end wall of one end of the shell (200), and a sealing ring is provided between the other end of the first annular sealing block (120) and the inner end of the first annular sealing groove (240).

7. The silicon carbide rod extrusion device according to claim 1, characterized in that: A first flange connection plate (110) is mounted on the circumferential outer wall of one end of the diameter-changing extrusion nozzle (100), the first flange connection plate (110) is fixedly connected to the second flange connection plate (230) via fastening bolts, and the second flange connection plate (230) is mounted on the circumferential outer wall of one end of the housing (200), and a feed trough (210) is provided on one side of the top of the circumferential outer wall of the housing (200).

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