Preparation method and preparation device of recrystallized silicon carbide disc membrane

Abstract

The invention relates to the technical field of membrane separation, and particularly discloses a preparation method and a preparation device of a recrystallized silicon carbide disc membrane, and the preparation method comprises the steps of raw material preparation, burdening, molding and pressing, finishing treatment, sintering treatment and product detection. The preparation device of the recrystallized silicon carbide disc membrane comprises a shell mechanism, a controller and an internal extrusion mechanism, the controller is installed outside the shell mechanism. And the internal extrusion mechanism is arranged below the left side of the shell mechanism. According to the preparation method and the preparation device of the recrystallized silicon carbide disc type membrane, wet material extrusion forming is adopted, and then the recrystallized silicon carbide disc type membrane is processed in a sintering and shaping mode, so that the recrystallized silicon carbide disc type membrane is higher in acid and alkali resistance, corrosion resistance and hardness and has hydrophilic and oleophobic characteristics, and the porosity of the membrane is improved; materials in the kneading machine are automatically cleaned in the extruding step, so that the utilization rate of the materials is increased, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of membrane separation, and in particular to a method for preparing a recrystallized silicon carbide disc membrane and a preparation device thereof. Background Art

[0002] Membrane separation is an important separation technology, which is widely used in medicine, food, beverage, brewing, chemical industry, biotechnology, water treatment, environmental protection and other fields. There are many types of filtration membranes. From the perspective of filtration accuracy, they are classified into: microfiltration membrane, ultrafiltration membrane, nanofiltration membrane, reverse osmosis membrane, etc. Each type of filtration membrane has its specific application field and advantages. From the perspective of filtration material, they are classified into: organic membrane and inorganic membrane. Inorganic membrane is further divided into: metal membrane, ceramic membrane and alloy membrane. Among them, ceramic membrane is divided into: silicon carbide (SiC), alumina ( Al2O3), zirconium oxide (ZrO2), titanium oxide (TiO2) and silicon oxide (SiO2) and other ceramic membranes, recrystallized silicon carbide disc-type ultrafiltration membrane can purify, separate and highly concentrate the solution, intercept substances with large molecular weight, and are used in the electronics industry, pharmaceutical industry, medical industry, food industry oil-water separation, etc. The recrystallized silicon carbide disc-type membrane has high surface porosity, thin membrane thickness, and the medium is not easy to fall off. It has the advantages of high filtration accuracy, high separation efficiency, low loss rate of filtered medium, no secondary pollution, and high reliability; In the prior art, the materials used in commercially available disc membranes are organic membranes, which have the disadvantages of poor chemical stability and are easily contaminated by organic liquids and chemical reagents, greatly reducing their service life. They are also prone to clogging and have non-polar or weakly polar characteristics with most organic solvents and organic pollutants, making them prone to clogging and difficult to recover. Therefore, other materials used in commercially available disc membranes have certain problems in terms of production capacity, purity and contamination, resulting in difficulties in high-concentration or the inability to achieve high-concentration in special industries. Summary of the invention

[0003] The object of the present invention is to provide a method for preparing a recrystallized silicon carbide disk film and a preparation device thereof, so as to solve the problems mentioned in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a method for preparing a recrystallized silicon carbide disk film, comprising the following steps: Step 1, raw material preparation: obtain silicon carbide raw materials with a purity of 99.8% from the raw material warehouse; Step 2, ingredients: SiC raw material with a purity of 99.8% is mixed and kneaded with a connecting agent and a viscosity agent using a preparation device for a recrystallized SiC disc membrane to obtain a mixed material for a subsequent pressing process; Step 3, molding and pressing: the mixed material is extruded into mold A, mold B and water channel mold by using a preparation device of recrystallized silicon carbide disc film to form a green body, and then the green body formed by mold A, mold B and water channel mold is pressed to form a green body S with a water channel structure; Step 4: Finishing: 4.1: Trim the obtained blank S so that its shape meets the requirements; 4.2: Demolding the trimmed blank S; 4.3: The green body S after demoulding is subjected to degumming treatment; Step 5, sintering treatment: the debonded green body S is sintered at a high temperature of 2450° C., and the sintered green body S is coated to obtain a recrystallized silicon carbide disc film; Step 6, product testing: The recrystallized silicon carbide disc membrane products are tested. If they are unqualified, they are treated as waste products. The qualified recrystallized silicon carbide disc membrane products are sent to the finished product warehouse.

[0005] A device for preparing a recrystallized silicon carbide disc film comprises: a shell mechanism, a controller and an internal extrusion mechanism; the controller is installed outside the shell mechanism; and the internal extrusion mechanism is arranged below the left side of the shell mechanism.

[0006] Preferably, the shell mechanism comprises: a base platform, a kneading machine shell, a storage cylinder, an extrusion tube, a circular slot, a first fixed frame, a first electric telescopic rod, a sealing cover, a feeding nozzle, a solenoid valve, a ground rail platform and a cleaning component; the base platform is arranged above the internal extrusion mechanism in the front-to-back direction, and the controller is installed at the right front of the base platform; the kneading machine shell is installed at the front side of the top end of the base platform; the number of the storage cylinders is two, and the two storage cylinders are respectively installed at the front and rear ends of the right side of the kneading machine shell, and the inner sides of the two storage cylinders are communicated with the inner cavity of the kneading machine shell; the extrusion tube is arranged on the right side of the kneading machine shell and is located below the inner sides of the left and right storage cylinders, and the inner side of the extrusion tube is communicated with the bottom of the inner cavity of the kneading machine shell; the number of the circular slots is three, of which two of the circular slots are respectively opened on the left side of the inner cavity of the kneading machine shell and are located at the corresponding positions on the left sides of the front and rear storage cylinders, and the other circular slots are respectively opened on the left side of the inner cavity of the kneading machine shell and are located at the corresponding positions on the left sides of the front and rear storage cylinders, and the other circular slots are opened on the right side of the kneading machine shell. A circular slot is provided at the bottom left side of the inner cavity of the kneading machine housing, and the outer side of the inner cavity of the circular slot is communicated with the outer side of the kneading machine housing; a first fixed frame is installed on the top of the base platform and is located in the middle of the front side of the kneading machine housing; one end of the first electric telescopic rod is rotatably connected to the top of the base platform and is located at the front side of the first fixed frame through a pin shaft seat, and the first electric telescopic rod is electrically connected to the controller; a sealing cover is rotatably connected to the top of the first fixed frame through a pin shaft, and the other end of the first electric telescopic rod is rotatably connected to the inner front end of the sealing cover through a pin shaft; a feeding nozzle is installed below the sealing cover; a solenoid valve is arranged on the top of the sealing cover, the solenoid valve is connected to the feeding nozzle, and the solenoid valve is electrically connected to the controller; a ground rail platform is arranged at the top of the base platform along the front-back direction and is located at the rear side of the kneading machine housing, and the ground rail platform is electrically connected to the controller; a cleaning component is arranged on the top of the moving end of the ground rail platform.

[0007] Preferably, the cleaning component includes: a first raising frame, a rotating shaft seat, a second raising frame, a second electric telescopic rod, a rotating frame, a slot frame, a lifting frame and a third electric telescopic rod; the first raising frame is installed at the front side of the moving end of the ground rail platform in the up-down direction; the rotating shaft seat is installed at the top of the first raising frame; the second raising frame is installed at the moving end of the ground rail platform in the up-down direction and is located at the rear side of the first raising frame; one end of the second electric telescopic rod is rotatably connected to the top of the second raising frame through a pin shaft seat, and the other end of the second electric telescopic rod is rotatably connected to the rear top end of the rotating frame through a pin shaft seat, and the second electric telescopic rod is electrically connected to the controller; the rotating frame is installed on the outside of the rotating shaft of the rotating shaft seat; the slot frame is installed on the front side of the top of the rotating frame; the lifting frame is plugged into the bottom of the slot frame; the third electric telescopic rod is installed in the middle of the top of the slot frame, the telescopic end of the third electric telescopic rod extends into the inner side of the slot frame and is connected to the inner top of the lifting frame, and the third electric telescopic rod is electrically connected to the controller.

[0008] Preferably, the cleaning component further comprises: a fourth electric telescopic rod, a mounting frame, a slide housing, a first motor, a scraper and a spring; the number of the fourth electric telescopic rods is two, and the two fourth electric telescopic rods are respectively arranged on the left and right sides of the lifting frame through the mounting frame, and the fourth electric telescopic rod is electrically connected to the controller; the mounting frame is installed at the bottom of the telescopic ends of the left and right fourth electric telescopic rods; the number of the slide housings is two groups, and the number of the slide housings in each group is two, and the two groups of slide housings are respectively rotatably installed at the left and right ends of the front and rear sides of the bottom of the mounting frame through the pin shaft seat; There are two first motors, and the two first motors are respectively arranged on the front and rear ends and the left and right sides of the inner side of the mounting frame through mounting frames, and the rotating ends of the two first motors are respectively connected to the axles of the two slide slot shells, and the first motors are electrically connected to the controller; there are two scrapers, and the two scrapers are respectively plugged into the inner sides of the left and right groups of slide slot shells; there are two groups of springs, and the number of springs in each group is two, and the two groups of springs are respectively installed at the inner ends of the inner cavities of the two groups of slide slot shells, and the outer sides of the two groups of springs are respectively connected to the left and right ends of the inner sides of the two scrapers.

[0009] Preferably, the internal extrusion mechanism includes: a trough body shell, a first guide rail assembly, a rack track, a limit seat, a movable shell, a second motor and a driving gear; the trough body shell is arranged on the lower left front side of the base platform along the left-right direction; the number of the first guide rail assemblies is two, and the two first guide rail assemblies are respectively installed on the front and rear sides of the inner top of the trough body shell along the left-right direction; the rack track is installed on the front side of the inner top of the inner cavity of the trough body shell through a bracket along the left-right direction; the number of the limit seats is two, and the two limit seats are respectively installed on the left and right sides of the inner top of the trough body shell; the movable shell is installed on the top of the limit ends of the front and rear two first guide rail assemblies; the second motor is installed at the inner bottom end opening of the movable shell, and the second motor is electrically connected to the controller; the driving gear is installed at the bottom of the rotating end of the second motor, and the driving gear is meshed with the rack track.

[0010] Preferably, the internal extrusion mechanism also includes: a second fixed frame, a gear box, a third motor, a first transmission belt assembly, an extrusion roller, a sealed bearing pad, a bearing drum, a third fixed frame, a spiral conveyor roller, a fourth motor and a second transmission belt assembly; the second fixed frame is installed on the left side of the top end of the movable shell in the front-to-back direction; the gear box is installed on the rear side of the top end of the second fixed frame; the third motor is installed on the front side of the top end of the second fixed frame, and the third motor is electrically connected to the controller; one end of the first transmission belt assembly is installed on the rotating end of the third motor, and the other end of the first transmission belt assembly is connected to the input end of the gear box; the number of the extrusion rollers is two, and the two extrusion rollers are respectively installed on the front and rear sides of the output end of the gear box; the number of the sealed bearing pads is three, of which two of the sealed bearing pads are respectively installed on the outer left sides of the front and rear extrusion rollers, and the front and rear two The sealed bearing pad can close the outer sides of the two circular slots above; there are two bearing drums, which are respectively installed on the right ends of the two front and rear extrusion rollers of the gear box, and the two front and rear bearing drums are respectively plugged into the inner cavities of the two front and rear storage drums; the third fixed frame is arranged at the right rear of the top of the second fixed frame; the spiral conveying roller is rotatably connected to the right top of the third fixed frame through a bearing, and the spiral conveying roller can be plugged into the inner cavity of the extrusion tube, and the other sealed bearing pad is installed on the left side of the outer axis of the spiral conveying roller, and can close the outer side of the circular slot below; the fourth motor is installed at the right front of the top of the second fixed frame, and the fourth motor is electrically connected to the controller; one end of the second transmission belt assembly is installed on the rotating end of the fourth motor, and the other end of the second transmission belt assembly is connected to the left end of the axis of the spiral conveying roller.

[0011] Preferably, the internal extrusion mechanism further includes: a second guide rail assembly, a mounting plate, a fifth electric telescopic rod, a third guide rail assembly, a mounting seat, a sixth electric telescopic rod, a connecting plate, an ejector rod, a slide plate and a roller shaft; the number of the second guide rail assemblies is two, and the two second guide rail assemblies are respectively mounted on the front and rear ends of the rear side of the bottom end of the inner cavity of the trough shell in the left and right directions; the mounting plate is mounted on the top of the limit ends of the front and rear second guide rail assemblies; the fifth electric telescopic rod is mounted on the bottom end of the inner cavity of the trough shell and is located on the inner side of the front and rear second guide rail assemblies, the telescopic end of the fifth electric telescopic rod is connected to the left side of the mounting plate, and the fifth electric telescopic rod is electrically connected to the controller; the number of the third guide rail assemblies is Two, the two third guide rail assemblies are respectively installed on the front and rear sides of the right end of the mounting plate along the up and down direction; the mounting seat is installed on the right side of the limit ends of the front and rear two third guide rail assemblies; the number of the sixth electric telescopic rods is two, and the two sixth electric telescopic rods are respectively installed on the front and rear sides of the top of the mounting seat through the brackets along the left and right directions, and the sixth electric telescopic rod is electrically connected to the controller; the connecting plate is arranged on the left side of the telescopic ends of the front and rear two sixth electric telescopic rods; the ejector rod is installed on the right side of the connecting plate along the left and right direction; the slide plate is installed on the rear side of the inner cavity of the slot body shell, and the slide shape of the slide plate is Z-shaped; the roller shaft is rotatably connected to the rear side of the mounting seat through a pin shaft, and the roller shaft is plugged into the inner cavity of the slide plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The recrystallized silicon carbide disc membrane prepared by the present invention has stronger acid and alkali resistance and corrosion resistance, and can be widely used in special fields containing acid and alkali; higher hardness can better separate materials and has a longer service life; it has hydrophilic and oleophobic properties and can be used for oil-water separation in oil field exploitation, petrochemical and coal chemical industries; because silicon carbide materials can form more voids during the recrystallization process, the porosity of the membrane is increased, which directly improves the working efficiency of the product. Compared with existing products, the efficiency is increased by more than 50%.

[0013] 2. The driving gear is driven by the second motor to rotate and move to the left along the outside of the rack track. The mobile housing moves horizontally to the left under the limiting action of the first guide rail assembly, so as to drive the extrusion roller and the spiral conveyor roller to move to the left with the cooperation of the mobile housing, the gear box and the third fixed frame. The sealed bearing pad releases the seal on the left side of the circular slot, and the extrusion roller passes through the inner cavity of the circular slot on the front and rear sides of the top to move to the outside of the kneading machine housing. The bearing drum is disengaged from the inner cavity of the storage cylinder, and the spiral conveyor roller passes through the inner cavity of the bottom circular slot to move to the outside of the kneading machine housing. The staff cleans the outside of the extrusion roller and the spiral conveyor roller respectively.

[0014] 3. The rotating frame is driven to flip downward to a vertical state by the second electric telescopic rod, the lifting frame is driven to move downward inside the slot frame by the third electric telescopic rod, the mounting frame is driven to move downward in the inner cavity of the kneading machine shell by the fourth electric telescopic rod, and the scrapers on both sides are driven to clean the front and back sides of the inner wall of the kneading machine shell with the cooperation of the slide slot shells on the front and rear sides of the bottom of the mounting frame. When the scrapers on both sides move to the bottom position of the inner cavity of the kneading machine shell, the first motors on the front and rear sides drive the slide slot shells on the left and right sides at the corresponding positions to rotate downward, and the scrapers on both sides are pushed outward under the elastic action of the springs to keep in contact with the inner wall of the kneading machine shell, so as to achieve the kneading machine. The bottom of the arc-shaped inner wall of the shell is cleaned, and the residual material on the inner wall of the kneading machine shell is scraped into the inner cavity of the extrusion tube. The fifth electric telescopic rod drives the mounting plate to move to the right under the limiting action of the second guide rail assembly. The mounting plate drives the mounting seat to move to the right with the cooperation of the third guide rail assembly, and the roller shaft moves to the upper right along the inner cavity of the slide plate to drive the mounting seat to move upward to the specified height position at the specified position under the limiting action of the third guide rail assembly. The sixth electric telescopic rod drives the ejector rod to move to the right, so that the ejector rod passes through the inner cavity of the bottom circular slot and is inserted into the interior of the extrusion tube, and the material in the inner cavity of the extrusion tube is pushed out to the outside for collection through the ejector rod.

[0015] In summary, the present invention adopts wet material extrusion molding and then sintering and shaping to process the recrystallized silicon carbide disc membrane, so that it has stronger acid and alkali resistance, corrosion resistance and hardness, has hydrophilic and oleophobic properties, improves the porosity of the membrane, and automatically cleans the material inside the kneading machine during the extrusion step, thereby improving the utilization rate of the material and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic flow chart of a method for preparing a recrystallized silicon carbide disk-type membrane according to the present invention; Figure 2 It is a schematic diagram of a preparation device of a recrystallized silicon carbide disk film of the present invention; Figure 3 for Figure 2 Exploded diagram of the shell mechanism; Figure 4 for Figure 3 Exploded view of cleaned parts; Figure 5 for Figure 4 A magnified image of point A; Figure 6 for Figure 3 Exploded diagram of the internal extrusion mechanism; Figure 7 for Figure 6 A magnified view of point B; Figure 8 for Figure 6 Enlarged view of point C.

[0017] In the figure: 1. Shell mechanism; 11. Base platform; 12. Kneading machine shell; 13. Storage cylinder; 14. Extrusion tube; 15. Circular slot; 16. First fixed frame; 17. First electric telescopic rod; 18. Sealing cover; 19. Feeding nozzle; 110. Solenoid valve; 111. Ground rail platform; 2. Cleaning parts; 21. First heightening frame; 22. Rotating shaft seat; 23. Second heightening frame; 24. Second electric telescopic rod; 25. Rotating frame; 26. Slot frame; 27. Lifting frame; 28. Third electric telescopic rod; 29. ​​Fourth electric telescopic rod; 210. Mounting frame; 211. Slide housing; 212. First motor; 213. Scraper; 214. Spring; 3. Controller; 4. Internal extrusion mechanism; 41. Slot housing; 42. The first guide rail assembly; 43. The rack rail; 44. The limit seat; 45. The movable housing; 46. The second motor; 47. The driving gear; 48. The second fixed frame; 49. The gear box; 410. The third motor; 411. The first transmission belt assembly; 412. The squeeze roller; 413. The sealed bearing pad; 414. The bearing drum; 415. The third fixed frame; 416. The spiral conveyor roller; 417. The fourth motor; 418. The second transmission belt assembly; 419. The second guide rail assembly; 420. The mounting plate; 421. The fifth electric telescopic rod; 422. The third guide rail assembly; 423. The mounting seat; 424. The sixth electric telescopic rod; 425. The connecting plate; 426. The ejector rod; 427. The slide plate; 428. The roller shaft. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 8 The present invention provides a technical solution: a method for preparing a recrystallized silicon carbide disk film, comprising the following steps: Step 1, raw material preparation: obtain silicon carbide raw materials with a purity of 99.8% from the raw material warehouse; Step 2, ingredients: SiC raw material with a purity of 99.8% is mixed and kneaded with a connecting agent and a viscosity agent using a preparation device for a recrystallized SiC disc membrane to obtain a mixed material for a subsequent pressing process; Step 3, molding and pressing: the mixed material is extruded into mold A, mold B and water channel mold by using a preparation device of recrystallized silicon carbide disc film to form a green body, and then the green body formed by mold A, mold B and water channel mold is pressed to form a green body S with a water channel structure; Step 4: Finishing: 4.1: Trim the obtained blank S so that its shape meets the requirements; 4.2: Demolding the trimmed blank S; 4.3: The green body S after demoulding is subjected to degumming treatment; Step 5, sintering treatment: the debonded green body S is sintered at a high temperature of 2450° C., and the sintered green body S is coated to obtain a recrystallized silicon carbide disc film; Step 6, product testing: The recrystallized silicon carbide disc membrane products are tested. If they are unqualified, they are treated as waste products. The qualified recrystallized silicon carbide disc membrane products are sent to the finished product warehouse.

[0020] like Figure 2 As shown, a preparation device for a recrystallized silicon carbide disc film includes: a shell mechanism 1, a controller 3 and an internal extrusion mechanism 4; the controller 3 is installed on the outside of the shell mechanism 1, and a preset program is set inside the controller 3, which can be controlled by manual operation of the staff according to actual needs, or automatically controlled by its own internal preset program; the internal extrusion mechanism 4 is set at the lower left side of the shell mechanism 1.

[0021] As a preferred solution, further, Figure 3As shown, the housing mechanism 1 includes: a base 11, a kneading machine housing 12, a storage cylinder 13, an extrusion tube 14, a circular slot 15, a first fixed frame 16, a first electric telescopic rod 17, a sealing cover 18, a feeding nozzle 19, a solenoid valve 110, a ground rail platform 111 and a cleaning component 2; the base 11 is arranged above the internal extrusion mechanism 4 along the front-to-back direction, and the controller 3 is installed at the right front of the base 11; the kneading machine housing 12 is installed at the front side of the top of the base 11; the number of the storage cylinders 13 is two, and the two storage cylinders 13 are respectively installed at the front and rear ends of the right side of the kneading machine housing 12, and the inner sides of the two storage cylinders 13 are communicated with the inner cavity of the kneading machine housing 12; The outlet pipe 14 is arranged on the right side of the kneading machine housing 12 and is located below the inner side of the left and right storage cylinders 13. The inner side of the extrusion pipe 14 is communicated with the bottom of the inner cavity of the kneading machine housing 12. There are three circular slots 15, two of which are respectively opened on the left side of the inner cavity of the kneading machine housing 12 and are located at the corresponding positions on the left sides of the front and rear storage cylinders 13. Another circular slot 15 is opened at the bottom of the left side of the inner cavity of the kneading machine housing 12. The outer side of the inner cavity of the circular slot 15 is communicated with the outside of the kneading machine housing 12. The first fixing frame 16 is installed on the top of the base platform 11 and is located in the middle of the front side of the kneading machine housing 12. One end of the first electric telescopic rod 17 is rotated by the pin shaft seat. The first electric telescopic rod 17 is electrically connected to the top of the base platform 11 and is located at the front side of the first fixed frame 16. The first electric telescopic rod 17 is electrically connected to the controller 3. The first electric telescopic rod 17 is controlled by the controller 3. During the extension and contraction process of the first electric telescopic rod 17 itself, it can rotate around the rotation connection with the base platform 11 pin shaft seat; the sealing cover 18 is rotatably connected to the top of the first fixed frame 16 through the pin shaft, and the other end of the first electric telescopic rod 17 is rotatably connected to the inner front end of the sealing cover 18 through the pin shaft. The sealing cover 18 can be turned up or down at the top of the first fixed frame 16, and the outside of the sealing cover 18 is provided with a lock that can be connected to the kneading machine housing 12; the feeding nozzle 19 is arranged Installed under the sealing cover 18; the solenoid valve 110 is arranged on the top of the sealing cover 18, the solenoid valve 110 is connected to the feeding nozzle 19, the solenoid valve 110 is electrically connected to the controller 3, the solenoid valve 110 is controlled to open and close by the controller 3, and the solenoid valve 110 can be connected to an external liquid additive supply device; the ground rail platform 111 is arranged at the top of the base platform 11 along the front and rear direction and is located on the rear side of the kneading machine housing 12, the ground rail platform 111 is electrically connected to the controller 3, the ground rail platform 111 is controlled by the controller 3, and the ground rail platform 111 can drive the cleaning component 2 to move horizontally in the front and rear direction; the cleaning component 2 is arranged on the top of the moving end of the ground rail platform 111.

[0022] As a preferred solution, further, Figure 4 and Figure 5As shown, the cleaning component 2 includes: a first elevated frame 21, a rotating shaft seat 22, a second elevated frame 23, a second electric telescopic rod 24, a rotating frame 25, a slot frame 26, a lifting frame 27, a third electric telescopic rod 28, a fourth electric telescopic rod 29, a mounting frame 210, a slide slot housing 211, a first motor 212, a scraper 213 and a spring 214; the first elevated frame 21 is installed on the front side of the moving end of the ground rail platform 111 along the up-down direction; the rotating shaft seat 22 is installed on the top of the first elevated frame 21; the second elevated frame 23 is installed on the moving end of the ground rail platform 111 along the up-down direction and is located on the rear side of the first elevated frame 21; one end of the second electric telescopic rod 24 is rotatably connected to the top of the second elevated frame 23 through the pin shaft seat, and the second electric telescopic rod 24 The other end is rotatably connected to the top of the rear side of the rotating frame 25 through a pin shaft seat, the second electric telescopic rod 24 is electrically connected to the controller 3, the second electric telescopic rod 24 is controlled by the controller 3, and the second electric telescopic rod 24 can rotate around the rotation connection with the pin shaft seat of the second electric telescopic rod 24 during its own extension and contraction process; the rotating frame 25 is installed outside the rotating shaft of the rotating shaft seat 22; the slot frame 26 is installed on the front side of the top of the rotating frame 25; the lifting frame 27 is plugged into the bottom of the slot frame 26, and the lifting frame 27 can move up and down at the bottom of the slot frame 26; the third electric telescopic rod 28 is installed in the middle of the top of the slot frame 26, and the telescopic end of the third electric telescopic rod 28 extends into the inner side of the slot frame 26 and is connected to the inner top of the lifting frame 27, The third electric telescopic rod 28 is electrically connected to the controller 3, and the third electric telescopic rod 28 is controlled by the controller 3 to extend and shorten, and the third electric telescopic rod 28 can drive the lifting frame 27 to move up and down; the number of the fourth electric telescopic rod 29 is two, and the two fourth electric telescopic rods 29 are respectively arranged on the left and right sides of the lifting frame 27 through the mounting frame, and the fourth electric telescopic rod 29 is electrically connected to the controller 3, and the fourth electric telescopic rod 29 is controlled by the controller 3 to extend and shorten, and the fourth electric telescopic rod 29 can drive the mounting frame 210 to move up and down by its own extension and contraction; the mounting frame 210 is installed at the bottom of the telescopic ends of the left and right fourth electric telescopic rods 29; the number of the slide slot housings 211 is two groups, and the number of each group of slide slot housings 211 is two, The two groups of chute housings 211 are rotatably mounted on the front and rear sides and the left and right ends of the bottom of the mounting frame 210 through the pin seats; there are two first motors 212, which are respectively arranged on the front and rear sides and the left and right ends of the inner side of the mounting frame 210 through the mounting frame, and the rotating ends of the two first motors 212 are respectively connected to the axles of the two chute housings 211, and the first motors 212 are electrically connected to the controller 3, and the first motors 212 are controlled by the controller 3 to extend and shorten, and the first motors 212 can drive the chute housing 211 to rotate up and down; there are two scrapers 213, which are respectively plugged into the inner sides of the left and right groups of chute housings 211, and the scrapers 213 can move inside and outside the inner side of the chute housing 211;There are two groups of springs 214, each group of springs 214 has two springs. The two groups of springs 214 are respectively installed at the inner ends of the inner cavities of the two groups of chute housings 211. The outer sides of the two groups of springs 214 are respectively connected to the left and right ends of the inner sides of the two scrapers 213. The springs 214 drive the scrapers 213 to move outward under their own elastic action.

[0023] As a preferred solution, further, Figure 6 , Figure 7 and Figure 8As shown, the internal extrusion mechanism 4 includes: a trough shell 41, a first guide rail assembly 42, a rack rail 43, a limit seat 44, a movable shell 45, a second motor 46, a driving gear 47, a second fixed frame 48, a gear box 49, a third motor 410, a first transmission belt assembly 411, an extrusion roller 412, a sealed bearing pad 413, a bearing drum 414, a third fixed frame 415, a spiral conveyor roller 416, a fourth motor 417, a second transmission belt assembly 418, a second guide rail assembly 419, a mounting plate 420, a fifth electric telescopic rod 421, a third guide rail assembly 422, a mounting seat 423, a sixth electric telescopic rod 424, a connecting plate 425, an ejector rod 426, a slide plate 427 and a roller shaft 42 8; the slot housing 41 is arranged on the lower left front side of the base platform 11 along the left-right direction; there are two first guide rail assemblies 42, which are respectively installed on the front and rear sides of the inner top of the slot housing 41 along the left-right direction, and the guide rails in the first guide rail assembly 42 are installed on the front and rear sides of the inner top of the slot housing 41 along the left-right direction, and the outer sleeve of the guide rail is connected with a limiting slider as a limiting end; the rack rail 43 is installed on the front side of the inner top of the slot housing 41 through a bracket along the left-right direction; there are two limiting seats 44, which are respectively installed on the left and right sides of the inner top of the slot housing 41; the moving housing 45 is installed on the top of the limiting ends of the two front and rear first guide rail assemblies 42; the second motor 46 is installed Installed at the inner bottom opening of the mobile housing 45, the second motor 46 is electrically connected to the controller 3, the second motor 46 is controlled by the controller 3 to extend and shorten, and the second motor 46 can drive the driving gear 47 to rotate clockwise or counterclockwise; the driving gear 47 is installed at the bottom of the rotating end of the second motor 46, and the driving gear 47 is meshed with the rack track 43; the second fixed frame 48 is installed on the left side of the top of the mobile housing 45 along the front-to-back direction; the gear box 49 is installed on the rear side of the top of the second fixed frame 48, and the gear box 49 can increase the transmission ratio to drive the squeezing rollers 412 on both sides to rotate; the third motor 410 is installed on the front side of the top of the second fixed frame 48, the third motor 410 is electrically connected to the controller 3, and the third motor 410 is controlled by The controller 3 is controlled to drive the belt on one side of the first transmission belt assembly 411 to rotate; one end of the first transmission belt assembly 411 is installed at the rotating end of the third motor 410, and the other end of the first transmission belt assembly 411 is connected to the input end of the gear box 49, and the first transmission belt assembly 411 can play a transmission role between the gear box 49 and the third motor 410; the number of squeezing rollers 412 is two, and the two squeezing rollers 412 are respectively installed on the front and rear sides of the output end of the gear box 49; the number of sealed bearing pads 413 is three, of which two sealed bearing pads 413 are respectively installed on the outer left sides of the front and rear squeezing rollers 412, and the front and rear sealed bearing pads 413 can close the outer sides of the upper front and rear circular slots 15;There are two bearing drums 414, which are respectively installed on the right ends of the front and rear extrusion rollers 412 of the gear box 49. The front and rear bearing drums 414 are respectively plugged into the inner cavities of the front and rear storage drums 13. The inner ring of the bearing drum 414 is connected to the right end of the outer axis of the extrusion roller 412. The outer ring of the bearing drum 414 is inserted into the inner cavity of the storage drum 13 and completely fills the inner cavity of the storage drum 13. The third fixed frame 415 is arranged at the right rear of the top of the second fixed frame 48. The spiral conveying roller 416 is rotatably connected to the right top of the third fixed frame 415 through the bearing. The spiral conveying roller 416 can be plugged into the inner cavity of the extrusion tube 14. Another sealing bearing pad 413 is installed on the left outer axis of the spiral conveying roller 416. side, and can close the outer side of the circular slot 15 below; the fourth motor 417 is installed at the right front of the top of the second fixed frame 48, the fourth motor 417 is electrically connected to the controller 3, and the fourth motor 417 is controlled by the controller 3 to drive the belt on one side of the second transmission belt assembly 418 to rotate; one end of the second transmission belt assembly 418 is installed at the rotating end of the fourth motor 417, and the other end of the second transmission belt assembly 418 is connected to the left end of the axis of the spiral conveying roller 416, and the first transmission belt assembly 411 can play a transmission role between the fourth motor 417 and the spiral conveying roller 416; the number of second guide rail assemblies 419 is two, and the two second guide rail assemblies 419 are respectively installed on the rear side of the bottom end of the inner cavity of the trough body shell 41 in the left and right directions. At the front and rear ends, the guide rails in the second guide rail assembly 419 are installed on the inner side of the slot body shell 41 in the left-right direction, and the outer sleeve of the guide rail is connected with a limit slider as a limit end; the mounting plate 420 is installed on the top of the limit ends of the two front and rear second guide rail assemblies 419; the fifth electric telescopic rod 421 is installed at the bottom end of the inner cavity of the slot body shell 41 and is located on the inner side of the two front and rear second guide rail assemblies 419, the telescopic end of the fifth electric telescopic rod 421 is connected to the left side of the mounting plate 420, the fifth electric telescopic rod 421 is electrically connected to the controller 3, and the fifth electric telescopic rod 421 is controlled by the controller 3 to extend and shorten to drive the mounting plate 420 to move left and right; the number of the third guide rail assemblies 422 is two, and the two third guide rail assemblies 422 are respectively arranged in the up and down directions. Installed on the front and rear sides of the right end of the mounting plate 420; the mounting seat 423 is installed on the right side of the limit end of the front and rear third guide rail assemblies 422; the number of the sixth electric telescopic rod 424 is two, and the two sixth electric telescopic rods 424 are respectively installed on the front and rear sides of the top of the mounting seat 423 through the bracket along the left and right directions. The sixth electric telescopic rod 424 is electrically connected to the controller 3, and the sixth electric telescopic rod 424 is controlled by the controller 3 to extend and shorten to drive the connecting plate 425 to move left and right; the connecting plate 425 is arranged on the left side of the telescopic end of the front and rear sixth electric telescopic rods 424; the ejector rod 426 is installed on the right side of the connecting plate 425 along the left and right directions; the slide plate 427 is installed on the rear side of the inner cavity of the slot body shell 41, and the slide shape of the slide plate 427 is Z-shaped;The roller shaft 428 is rotatably connected to the rear side of the mounting seat 423 through a pin shaft, and the roller shaft 428 is plugged into the inner cavity of the slide plate 427, and the roller shaft 428 can move in the left and right directions along the inner cavity of the slide plate 427. ;

[0024] Here’s how it works: Step 1: The staff puts materials into the kneading machine housing 12 and connects the solenoid valve 110 with the external liquid additive supply device. The staff controls the controller 3 to start the third motor 410, the solenoid valve 110 and the third fixed frame 415. The third motor 410 drives the internal gears of the gear box 49 to rotate under the transmission of the first transmission belt assembly 411. Under the cooperation of the internal gears of the gear box 49, the squeezing rollers 412 on both sides and the bearing drum 414 are driven to rotate in the inner cavity of the kneading machine housing 12 and the storage cylinder 13 respectively. The external liquid additive supply device enters into the feeding nozzle 19 through the solenoid valve 110, and the liquid additive supply device is connected to the feeding nozzle 19 through the feeding nozzle 19. The material nozzle 19 sprays the material outside the inner cavity of the kneading machine housing 12, and the extrusion roller 412 generates shear force on the material during the rotation process, so that the material is continuously extruded and folded during the stirring process of the inner cavity of the kneading machine housing 12, and various additives in the material are evenly dispersed in the main material. Through continuous stirring, shearing, extrusion and folding, the material gradually changes from the initial uneven state to a uniform mixture. When the material reaches the required kneading degree, the third fixed frame 415 drives the spiral conveying roller 416 to rotate inside the extrusion tube 14 under the drive of the second transmission belt assembly 418, so that the kneaded material is discharged from the extrusion tube 14; Step 2: The staff controls the controller 3 to start the second motor 46 and the ground rail platform 111. The second motor 46 drives the driving gear 47 to rotate and moves the driving gear 47 to the left along the outside of the rack track 43. The mobile housing 45 moves horizontally to the left under the limiting action of the first guide rail assembly 42, so as to drive the squeezing roller 412 and the spiral conveying roller 416 to move to the left under the cooperation of the mobile housing 45, the gear box 49 and the third fixed frame 415. The sealing bearing pad 413 releases the seal on the left side of the circular slot 15, and the squeezing roller 412 passes through the inner cavity of the circular slot 15 on both sides of the top and moves to the outside of the kneading machine housing 12. The bearing rotating cylinder 414 is disengaged from the inner cavity of the storage cylinder 13, and the spiral conveying roller 416 passes through the inner cavity of the bottom circular slot 15 and moves to the outside of the kneading machine housing 12. The staff cleans the outside of the squeezing roller 412 and the spiral conveying roller 416 respectively; Step 3: The staff controls the controller 3 to start the first electric telescopic rod 17, the ground rail platform 111, the second electric telescopic rod 24, the third electric telescopic rod 28, the fourth electric telescopic rod 29, the first motor 212, the fifth electric telescopic rod 421 and the sixth electric telescopic rod 424. The first electric telescopic rod 17 shortens and drives the sealing cover 18 to flip upward to release the seal on the top of the kneading machine housing 12. The ground rail platform 111 drives the cleaning component 2 to move forward. The second electric telescopic rod 24 extends and drives the rotating frame 25 to align with the rotating shaft seat 22. The kneading machine housing 12 is turned down to a vertical state, the third electric telescopic rod 28 is extended to drive the lifting frame 27 to move downward inside the slot frame 26, and the lifting frame 27 is moved to the top of the inner cavity of the kneading machine housing 12, the fourth electric telescopic rod 29 is extended to drive the mounting frame 210 to move downward inside the inner cavity of the kneading machine housing 12, and the scrapers 213 on both sides are driven to clean the front and back sides of the inner wall of the kneading machine housing 12 with the cooperation of the chute housings 211 on the front and back sides of the bottom of the mounting frame 210. When the scrapers 213 on both sides move to the inner cavity of the kneading machine housing 12, the kneading machine housing 12 is turned down to a vertical state, the third electric telescopic rod 28 is extended to drive the lifting frame 27 to move downward inside the slot frame 26, and the lifting frame 27 is moved to the top of the inner cavity of the kneading machine housing 12, the fourth electric telescopic rod 29 is extended to drive the mounting frame 210 to move downward inside the inner cavity of the kneading machine housing 12, and the scrapers 213 on both sides are driven to clean the front and back sides of the inner wall of the kneading machine housing 12 with the cooperation of the chute housings 211 on the front and back sides of the bottom of the mounting frame 210. At the bottom position, the first motors 212 on the front and rear sides drive the left and right chute housings 211 on the corresponding positions to rotate downward, and the scrapers 213 on both sides are pushed outward under the elastic action of the springs 214 to keep in contact with the inner wall of the kneading machine housing 12, so as to clean the bottom of the arc-shaped inner wall of the kneading machine housing 12 and scrape the residual material on the inner wall of the kneading machine housing 12 into the inner cavity of the extrusion tube 14. The fifth electric telescopic rod 421 extends to drive the mounting plate 420 to move to the right under the limiting action of the second guide rail assembly 419, and the mounting plate 420 is in the first The three-rail assembly 422 cooperates to drive the mounting seat 423 to move to the right, and causes the roller shaft 428 to move to the upper right along the inner cavity of the slide plate 427, so as to drive the mounting seat 423 to move upward to a specified height position at a specified position under the limiting action of the third rail assembly 422, and the sixth electric telescopic rod 424 shortens and drives the ejector rod 426 to move to the right, so that the ejector rod 426 passes through the inner cavity of the bottom circular slot 15 and is inserted into the extrusion tube 14, and the material in the inner cavity of the extrusion tube 14 is pushed out to the outside for collection through the ejector rod 426.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a recrystallized silicon carbide disk film, characterized in that: The following steps are involved: Step 1, raw material preparation: obtain silicon carbide raw materials with a purity of 99.8% from the raw material warehouse; Step 2, ingredients: SiC raw material with a purity of 99.8% is mixed and kneaded with a connecting agent and a viscosity agent using a preparation device for a recrystallized SiC disc membrane to obtain a mixed material for a subsequent pressing process; Step 3, molding and pressing: the mixed material is extruded into mold A, mold B and water channel mold by using a preparation device of recrystallized silicon carbide disc film to form a green body, and then the green body formed by mold A, mold B and water channel mold is pressed to form a green body S with a water channel structure; Step 4: Finishing: 4.1: Trim the obtained blank S so that its shape meets the requirements; 4.2: Demolding the trimmed blank S; 4.3: The green body S after demoulding is subjected to degumming treatment; Step 5, sintering treatment: the debonded green body S is sintered at a high temperature of 2450° C., and the sintered green body S is coated to obtain a recrystallized silicon carbide disc film; Step 6, product testing: The recrystallized silicon carbide disc membrane products are tested. If they are unqualified, they are treated as waste products. The qualified recrystallized silicon carbide disc membrane products are sent to the finished product warehouse.

2. A device for preparing a recrystallized silicon carbide disc-shaped film, which is applied to the method for preparing a recrystallized silicon carbide disc-shaped film as claimed in claim 1, characterized in that: include: Housing mechanism (1); A controller (3) mounted outside the housing mechanism (1); The internal squeezing mechanism (4) is arranged at the lower left side of the outer shell mechanism (1).

3. The device for preparing a recrystallized silicon carbide disk film according to claim 2, characterized in that: The housing mechanism (1) comprises: A base platform (11) is arranged above the internal extrusion mechanism (4) in the front-to-back direction, and the controller (3) is installed at the front right of the base platform (11); A kneading machine housing (12) mounted on the front side of the top end of the base platform (11); A storage cylinder (13), wherein the number of the storage cylinders (13) is two, and the two storage cylinders (13) are respectively mounted on the front and rear ends of the right side of the kneading machine housing (12), and the inner sides of the two storage cylinders (13) are in communication with the inner cavity of the kneading machine housing (12); An extrusion tube (14) is arranged on the right side of the kneading machine housing (12) and is located below the inner side of the two left and right storage cylinders (13); the inner side of the extrusion tube (14) is in communication with the bottom of the inner cavity of the kneading machine housing (12); a circular slot (15), wherein the number of the circular slots (15) is three, wherein two of the circular slots (15) are respectively opened on the left side of the inner cavity of the kneading machine housing (12) and are located at corresponding positions on the left side of the front and rear storage cylinders (13), and another of the circular slots (15) is opened at the bottom of the left side of the inner cavity of the kneading machine housing (12), and the outer side of the inner cavity of the circular slots (15) is communicated with the outside of the kneading machine housing (12); A first fixing frame (16) is mounted on the top of the base platform (11) and is located in the middle of the front side of the kneading machine housing (12); A first electric telescopic rod (17), one end of which is rotatably connected to the top of the base platform (11) via a pin shaft seat and is located on the front side of the first fixed frame (16), and the first electric telescopic rod (17) is electrically connected to the controller (3); A sealing cover (18) is rotatably connected to the top end of the first fixing frame (16) via a pin shaft, and the other end of the first electric telescopic rod (17) is rotatably connected to the inner front end of the sealing cover (18) via a pin shaft; A feeding nozzle (19) is installed below the sealing cover (18); A solenoid valve (110) is arranged on the top of the sealing cover (18), the solenoid valve (110) is connected to the feeding nozzle (19), and the solenoid valve (110) is electrically connected to the controller (3); A ground rail platform (111) is arranged at the top of the base platform (11) along the front-rear direction and is located at the rear side of the kneading machine housing (12), and the ground rail platform (111) is electrically connected to the controller (3); A cleaning component (2) is arranged on the top of the moving end of the ground rail platform (111).

4. The device for preparing a recrystallized silicon carbide disk film according to claim 3, characterized in that: The cleaning component (2) comprises: A first height-enhancing frame (21) is installed on the front side of the moving end of the ground rail platform (111) in the up-down direction; A rotating shaft seat (22) mounted on the top of the first elevated frame (21); A second elevated frame (23) is installed at the movable end of the ground rail platform (111) in the up-down direction and is located at the rear side of the first elevated frame (21); A second electric telescopic rod (24), one end of which is rotatably connected to the top of the second height-raising frame (23) via a pin shaft seat, the other end of the second electric telescopic rod (24) is rotatably connected to the top end of the rear side of the rotating frame (25) via a pin shaft seat, and the second electric telescopic rod (24) is electrically connected to the controller (3); A rotating frame (25) mounted outside the rotating shaft of the rotating shaft seat (22); A slot frame (26) mounted on the front side of the top end of the rotating frame (25); A lifting frame (27) inserted into the bottom of the slot frame (26); A third electric telescopic rod (28) is mounted at the middle of the top end of the slot frame (26); the telescopic end of the third electric telescopic rod (28) extends into the inner side of the slot frame (26) and is connected to the inner top of the lifting frame (27); and the third electric telescopic rod (28) is electrically connected to the controller (3).

5. The device for preparing a recrystallized silicon carbide disk film according to claim 4, characterized in that: The cleaning component (2) further comprises: A fourth electric telescopic rod (29), the number of the fourth electric telescopic rods (29) being two, the two fourth electric telescopic rods (29) being respectively arranged on the left and right sides of the lifting frame (27) via a mounting frame, and the fourth electric telescopic rod (29) being electrically connected to the controller (3); A mounting frame (210) mounted on the bottom of the telescopic ends of the two left and right fourth electric telescopic rods (29); Slide housings (211), the number of the slide housings (211) being two groups, the number of the slide housings (211) in each group being two, the two groups of slide housings (211) being rotatably mounted on the front and rear sides and the left and right ends of the bottom of the mounting frame (210) respectively through pin seats; A first motor (212), the number of the first motors (212) being two, the two first motors (212) being respectively arranged on the inner side of the mounting frame (210) at the front and rear ends and the left and right sides through mounting frames, the rotating ends of the two first motors (212) being respectively connected to the axes of the two slideway housings (211), and the first motors (212) being electrically connected to the controller (3); Scrapers (213), the number of the scrapers (213) being two, and the two scrapers (213) being respectively plugged into the inner sides of the left and right sets of slideway housings (211); Springs (214), the number of the springs (214) being two groups, the number of the springs (214) in each group being two, the two groups of springs (214) being respectively mounted on the inner ends of the inner cavities of the two groups of slideway housings (211), and the outer sides of the two groups of springs (214) being respectively connected to the left and right ends of the inner sides of the two scrapers (213).

6. The device for preparing a recrystallized silicon carbide disk film according to claim 5, characterized in that: The internal extrusion mechanism (4) comprises: A tank shell (41) is arranged on the lower left front side of the base platform (11) along the left-right direction; A first guide rail assembly (42), the number of the first guide rail assemblies (42) being two, and the two first guide rail assemblies (42) being respectively mounted on the front and rear sides of the inner top end of the tank shell (41) along the left-right direction; A rack rail (43) is mounted on the front side of the top end of the inner cavity of the tank shell (41) via a bracket in the left-right direction; Limiting seats (44), the number of the limiting seats (44) is two, and the two limiting seats (44) are respectively installed on the left and right sides of the inner top end of the tank shell (41); A movable housing (45) mounted on the top of the limiting ends of the two front and rear first guide rail assemblies (42); a second motor (46) mounted at the inner bottom opening of the movable housing (45), the second motor (46) being electrically connected to the controller (3); A driving gear (47) is mounted on the bottom of the rotating end of the second motor (46), and the driving gear (47) is meshed with the rack track (43).

7. The device for preparing a recrystallized silicon carbide disk film according to claim 6, characterized in that: The internal extrusion mechanism (4) further comprises: A second fixing frame (48) is installed on the left side of the top end of the movable housing (45) along the front-rear direction; A gear box (49) mounted on the rear side of the top end of the second fixing frame (48); A third motor (410) is mounted on the front side of the top end of the second fixing frame (48), and the third motor (410) is electrically connected to the controller (3); a first transmission belt assembly (411), one end of which is mounted on the rotating end of the third motor (410), and the other end of which is connected to the input end of the gear box (49); Squeezing rollers (412), the number of the squeezing rollers (412) being two, and the two squeezing rollers (412) being respectively mounted on the front and rear sides of the output end of the gear box (49); Sealed bearing pads (413), the number of the sealed bearing pads (413) being three, wherein two of the sealed bearing pads (413) are respectively installed on the outer left sides of the front and rear squeezing rollers (412), and the front and rear two sealed bearing pads (413) are capable of sealing the outer sides of the upper front and rear circular slots (15); A bearing rotating cylinder (414), wherein the number of the bearing rotating cylinders (414) is two, and the two bearing rotating cylinders (414) are respectively mounted on the right ends of the front and rear squeezing rollers (412) of the gear box (49), and the front and rear two bearing rotating cylinders (414) are respectively plugged into the inner cavities of the front and rear storage cylinders (13); A third fixing frame (415) is arranged at the right rear of the top end of the second fixing frame (48); A spiral conveying roller (416) is rotatably connected to the right top end of the third fixed frame (415) via a bearing, and the spiral conveying roller (416) can be plugged into the inner cavity of the extrusion tube (14). Another sealing bearing pad (413) is installed on the left side of the outer axis of the spiral conveying roller (416) and can seal the outer side of the circular slot (15) below. a fourth motor (417) mounted on the front right side of the top end of the second fixing frame (48), the fourth motor (417) being electrically connected to the controller (3); One end of the second transmission belt assembly (418) is mounted on the rotating end of the fourth motor (417), and the other end of the second transmission belt assembly (418) is connected to the left end of the axis of the spiral conveying roller (416).

8. The device for preparing a recrystallized silicon carbide disk film according to claim 7, characterized in that: The internal extrusion mechanism (4) further comprises: A second guide rail assembly (419), the number of the second guide rail assembly (419) being two, and the two second guide rail assemblies (419) being respectively mounted at the front and rear ends of the rear side of the bottom end of the inner cavity of the tank shell (41) along the left-right direction; A mounting plate (420) mounted on the top of the limiting ends of the two front and rear second guide rail assemblies (419); a fifth electric telescopic rod (421), mounted at the bottom end of the inner cavity of the tank shell (41) and located inside the two front and rear second guide rail assemblies (419); the telescopic end of the fifth electric telescopic rod (421) is connected to the left side of the mounting plate (420); and the fifth electric telescopic rod (421) is electrically connected to the controller (3); A third guide rail assembly (422), the number of the third guide rail assemblies (422) being two, and the two third guide rail assemblies (422) being respectively mounted on the front and rear sides of the right end of the mounting plate (420) in the up-down direction; A mounting seat (423) mounted on the right side of the limiting ends of the two front and rear third guide rail assemblies (422); a sixth electric telescopic rod (424), the number of the sixth electric telescopic rods (424) being two, the two sixth electric telescopic rods (424) being respectively mounted on the front and rear sides of the top end of the mounting seat (423) in the left-right direction via brackets, and the sixth electric telescopic rods (424) being electrically connected to the controller (3); A connecting plate (425) is arranged on the left side of the telescopic ends of the two front and rear sixth electric telescopic rods (424); An ejector rod (426) is installed on the right side of the connecting plate (425) along the left-right direction; A slide plate (427) is mounted on the rear side of the inner cavity of the slot body shell (41); the slide plate (427) has a Z-shaped slide; The roller shaft (428) is rotatably connected to the rear side of the mounting seat (423) via a pin shaft, and the roller shaft (428) is plugged into the inner cavity of the slide plate (427).

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