Recrystallization furnace for sintering silicon carbide rod blank

Abstract

The invention provides a recrystallization furnace for silicon carbide rod blank sintering, and relates to the technical field of silicon carbide rod sintering, the recrystallization furnace comprises a furnace body and a heating rod, the furnace body is internally provided with at least two supporting plates, the side end part of each supporting plate is fixedly provided with a connecting box, the two side end parts of each connecting box are fixedly provided with second clamping plates, and the second clamping plates are fixedly connected with the furnace body. A mounting plate is rotatably mounted on the inner side wall of each second clamping plate, when a control module drives a driving rotating rod to rotate, a butt joint shaft in each connecting box also rotates synchronously, the tail end of a transmission rod is clamped with a second bevel gear, a rotating first bevel gear drives the second bevel gear to rotate, the mounting plates rotate around a bearing at the side end part, and the butt joint shafts rotate synchronously; the mounting plate is driven to rotate, the mounting plate rotates to drive the silicon carbide rod bodies to move, the positions of the two silicon carbide rod bodies are adjusted, the positions of the two silicon carbide rod bodies are exchanged, and the situation that a certain silicon carbide rod body is heated for a long time, the sintering temperature is too high, and uniform heating is facilitated is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of silicon carbon rod sintering, and more specifically, particularly relates to a recrystallization furnace for sintering silicon carbon rod blanks. Background Art

[0002] Silicon carbon rod sintering is a process in which the raw materials of silicon carbon rods are processed through a series of processes to make them have specific properties and structures. The temperature curve and holding time of the sintering furnace are strictly controlled to promote chemical reactions and the formation of microstructures.

[0003] 1. During heating, the heating rod is mainly located inside the furnace. When the silicon carbon rod is placed, it contacts the carrier plate. The side in contact with the carrier plate heats slower. At the same time, the closer to the inner wall of the furnace, the higher the temperature. This results in the temperature on the inside being not as high as the temperature on the outside on the same horizontal plane. This can easily lead to uneven heating of the silicon carbon rod and affect the quality of sintering.

[0004] 2. Silicon carbon rods are usually cooled naturally, allowing them to gradually release heat by air convection and radiation at room temperature. However, due to the slow heat transfer inside the silicon carbon rod, the internal temperature is still high, and a large temperature difference will form between the inside and outside of the silicon carbon rod. This temperature gradient will cause uneven shrinkage of the silicon carbon rod during the cooling process, thereby affecting its overall dimensional accuracy and structural stability. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a recrystallization furnace for sintering silicon carbon rod blanks to solve the above problems.

[0006] A recrystallization furnace for sintering silicon carbon rod blanks comprises a furnace body and a heating rod, wherein at least two support plates are arranged inside the furnace body, a connecting box is fixedly installed on the side end of each support plate, a second clamping plate is fixedly installed on the two side ends of each connecting box, a mounting plate is rotatably installed on the inner side wall of each second clamping plate, a first clamping plate is slidably installed on the side end of each support plate, a limiting plate is rotatably installed on the inner side of each first clamping plate, two support sleeves are fixedly installed on the side end of each mounting plate, an exhaust sleeve is fixedly installed on the side end of each support sleeve, at least two air outlets are provided on the surface of each exhaust sleeve, and two air leakage holes are provided on the side end of each support sleeve.

[0007] Preferably, a socket is provided at the top of each of the connecting boxes, a docking shaft is rotatably installed at the top of each of the connecting boxes, a third slide is slidably installed inside each of the connecting boxes, a first telescopic rod is fixedly installed at the side end of each of the third slides, a second slide is fixedly installed at the end of each of the third slides, a driving rotating rod is provided at the top of each of the second slides, a telescopic tube is provided at the top of each of the second slides, and a heat insulation cover is fixedly installed on the surface of each of the second slides.

[0008] Preferably, a transmission rod is rotatably installed on the two side ends of each connecting box, a first bevel gear is fixedly installed on both ends of each transmission rod, an air pipe is fixedly installed on the side end of each connecting box, a second bevel gear is fixedly installed on the side end of each mounting plate, two extrusion plates are slidably installed inside each first clamping plate, two silicon carbon rod bodies are provided on the side end of each first clamping plate, a latch gear is fixedly installed on the end of each extrusion plate, two second telescopic rods are fixedly installed on the side end of each extrusion plate, a base is fixedly installed inside the furnace body, an exhaust port is fixedly installed on the top of the furnace body, a control module is fixedly installed on the top of the furnace body, a pipeline is fixedly installed on the side end of the control module, a first slide plate is slidably installed on the end of the control module, and two hydraulic rods are fixedly installed on the top of the first slide plate.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] In the present invention, a plurality of air outlets are opened on the surface of the exhaust sleeve, and both the support sleeve and the exhaust sleeve are made of high temperature resistant materials. The surface of the silicon carbon rod body is cooled by natural wind, and at the same time, a natural airflow is generated inside the silicon carbon rod body through the exhaust sleeve, and the airflow is slowly transported to the inside of the silicon carbon rod body through the exhaust sleeve. An air leakage hole is installed on the side end of the support sleeve, and the airflow is discharged through the air leakage hole to take away the heat, thereby realizing rapid cooling. At the same time, it can also effectively reduce the temperature difference between the inside and the outside of the silicon carbon rod body, thereby ensuring the smooth progress of the sintering process and improving the quality of the product.

[0011] In the present invention, when the rotating rod is driven to rotate by the control module, the docking shaft inside each connecting box also rotates synchronously, the end of the transmission rod is engaged with the second bevel gear, and the rotating first bevel gear drives the second bevel gear to rotate, so that the mounting plate rotates around the bearing at the side end, driving the mounting plate to rotate, and the silicon carbon rod body is driven to move by the rotation of the mounting plate, so as to adjust the positions of the two silicon carbon rod bodies and allow the two silicon carbon rod bodies to swap positions, thereby preventing a silicon carbon rod body from being heated for a long time, resulting in excessively high sintering temperature, and facilitating uniform heating.

[0012] In the present invention, the side end of the silicon carbon rod body is aligned with the support sleeve by moving the silicon carbon rod body, and the first clamping plate is moved to drive the limiting plate to squeeze the side end of the silicon carbon rod body. The first clamping plate slides to one side to drive the limiting plate to squeeze the side end of the silicon carbon rod body. Silicon carbon rod bodies of different sizes can be installed and fixed, and multiple silicon carbon rod bodies can be suspended and fixed at the same time, which is convenient for heating and sintering the silicon carbon rod bodies.

[0013] In the present invention, by moving the support plate, a clamping block is installed on the top of the support plate, a groove is opened at the bottom end of the support plate, the clamping block is combined with the groove at the bottom end of the support plate, and by moving multiple support plates, the bottom end of the support plate is docked with another second clamping plate. The support plates can be used in combination, and the spacing of the silicon carbon rod bodies can be adjusted according to the specifications of the sintered silicon carbon rod bodies, thereby increasing the flexibility of use.

[0014] In the present invention, by pushing the first clamping plate, the end of the extrusion plate is allowed to slide inside the supporting plate, so that the first clamping plate slides horizontally. At the same time, under the reverse force of the two second telescopic rods, the second telescopic rods apply a pulling force to the extrusion plate, so that the extrusion plate slides inside the first clamping plate. At the same time, the extrusion plate drives the latch teeth to move inside the supporting plate. A latch groove is provided inside the supporting plate, and the latch block fits into the latch groove, thereby limiting the movement of the first clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the furnace structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the heating rod of the present invention;

[0017] Figure 3 It is a schematic diagram of the support plate structure of the present invention;

[0018] Figure 4 It is a schematic diagram of the structure of the connection box of the present invention;

[0019] Figure 5 It is a schematic diagram of the first splint structure of the present invention;

[0020] Figure 6 It is a schematic diagram of the second splint structure of the present invention;

[0021] Figure 7 It is a schematic diagram of the structure of the mounting plate of the present invention;

[0022] Figure 8 It is a schematic diagram of the control module structure of the present invention.

[0023] In the figure, the corresponding relationship between the component names and the figure numbers is: 11, furnace body; 12, heating rod; 13, exhaust port; 14, control module; 15, pipeline; 16, base; 17, support plate; 18, first clamping plate; 19, silicon carbon rod body; 21, first slide plate; 22, heat insulation cover; 23, second slide plate; 24, connecting box; 25, second clamping plate; 26, mounting plate; 27, block; 28, third slide plate; 29, first telescopic rod; 31, driving rotating rod; 32, telescopic tube; 33, docking shaft; 34, socket; 35, limit plate; 36, extrusion plate; 37, clamping tooth; 38, second telescopic rod; 39, support sleeve; 41, exhaust sleeve; 42, air outlet; 43, air supply pipe; 44, transmission rod; 45, first bevel gear; 46, second bevel gear; 47, hydraulic rod; 48, vent hole. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] See also Figure 1 - Figure 8 The present invention provides a recrystallization furnace for sintering silicon carbon rod blanks, comprising a furnace body 11 and a heating rod 12. At least two support plates 17 are arranged inside the furnace body 11. A connection box 24 is fixedly installed on the side end of each support plate 17. A second clamping plate 25 is fixedly installed on the two side ends of each connection box 24. A mounting plate 26 is rotatably installed on the inner side wall of each second clamping plate 25. A first clamping plate 18 is slidably installed on the side end of each support plate 17. A limiting plate 35 is rotatably installed on the inner side of each first clamping plate 18. Two support sleeves 39 are fixedly installed on the side end of each mounting plate 26. An exhaust sleeve 41 is fixedly installed on the side end of each support sleeve 39. At least two air outlets 42 are opened on the surface of each exhaust sleeve 41. The side end of each support sleeve 39 Two air leakage holes 48 are provided in each part to transmit the air flow to the interior of the connecting box 24 in sequence. One end of the internal air supply pipe 43 of the connecting box 24 is connected to the mounting plate 26. At the same time, the interior of the exhaust sleeve 41 is hollow in design. The exhaust sleeve 41 is through-connected with the mounting plate 26. The air flow enters the interior of the exhaust sleeve 41. A plurality of air outlets 42 are provided on the surface of the exhaust sleeve 41. The support sleeve 39 and the exhaust sleeve 41 are both made of high-temperature resistant materials. The surface of the silicon carbon rod body 19 is cooled by natural wind. At the same time, a natural air flow is generated inside the silicon carbon rod body 19 through the exhaust sleeve 41. The air flow is slowly transported to the interior of the silicon carbon rod body 19 through the exhaust sleeve 41. An air leakage hole 48 is installed on the side end of the support sleeve 39. The air flow is discharged through the air leakage hole 48 to take away the heat.

[0026] A socket 34 is provided at the top of each connection box 24, and a docking shaft 33 is rotatably installed at the top of each connection box 24. A third slide plate 28 is slidably installed inside each connection box 24, and a first telescopic rod 29 is fixedly installed at the side end of each third slide plate 28. The first slide plate 21 squeezes the top of the third slide plate 28, and a downward thrust is generated on the third slide plate 28, so that the third slide plate 28 slides downward. At the same time, two first telescopic rods 29 are installed at the side end of the third slide plate 28. The first telescopic rods 29 are stretched under force, and the third slide plate 28 drives the second slide plate 23 to slide downward at the bottom end of the connection box 24. At the same time, the second slide plate 2 3 is also installed with a driving rod 31 and a telescopic tube 32. The second slide 23 moves downward to allow the end of the telescopic tube 32 to be inserted into the socket 34. At the same time, the end of the driving rod 31 is docked with the docking shaft 33. The end of each third slide 28 is fixedly installed with a second slide 23. The top of each second slide 23 is provided with a driving rod 31. The top of each second slide 23 is provided with a telescopic tube 32. The surface of each second slide 23 is fixedly installed with a heat insulation cover 22. At the same time, the first slide 21 drives the heat insulation cover 22 to extend and retract, and the heat insulation cover 22 plays a role of isolating and protecting the driving rod 31 and the telescopic tube 32.

[0027] The two side ends of each connecting box 24 are rotatably installed with a transmission rod 44, and the two ends of each transmission rod 44 are fixedly installed with a first bevel gear 45. The side ends of each connecting box 24 are fixedly installed with an air supply pipe 43. When the driving rod 31 is driven to rotate by the control module 14, the docking shaft 33 inside each connecting box 24 also rotates synchronously, and the end of the transmission rod 44 is engaged with the second bevel gear 46. The rotating first bevel gear 45 drives the second bevel gear 46 to rotate, so that the mounting plate 26 rotates around the bearing of the side end, drives the mounting plate 26 to rotate, and drives the silicon carbon rod body 19 to move through the rotation of the mounting plate 26 to adjust the position of the two silicon carbon rod bodies 19. The side ends of each mounting plate 26 are fixedly installed with a second bevel gear 46. Two extrusion plates 36 are slidably installed inside each first clamping plate 18. The side ends of each first clamping plate 18 are provided with two silicon carbon rod bodies 19. The end of each extrusion plate 36 is fixedly installed with a latch tooth 37. Two second telescopic rods 38 are fixedly installed on the side ends of the extrusion plate 36, a base 16 is fixedly installed inside the furnace body 11, an exhaust port 13 is fixedly installed on the top of the furnace body 11, and a control module 14 is fixedly installed on the top of the furnace body 11. By moving the support plate 17, a block 27 is installed on the top of the support plate 17, and a groove is opened at the bottom end of the support plate 17. The block 27 is combined with the groove at the bottom end of the support plate 17. By moving multiple support plates 17 and docking the bottom end of the support plate 17 with another second clamping plate 25, the support plates 17 can be used in combination. According to the specifications of the sintered silicon carbon rod body 19, the spacing of the silicon carbon rod body 19 is adjusted to increase the flexibility of use. Multiple heating rods 12 are installed through the inner wall of the furnace body 11 to heat the internal space of the furnace body 11. A pipe 15 is fixedly installed on the side end of the control module 14, and a first slide plate 21 is slidably installed at the end of the control module 14. Two hydraulic rods 47 are fixedly installed on the top of the first slide plate 21.

[0028] Working principle:

[0029] In the first step, when in use, a plurality of heating rods 12 are installed on the inner wall of the furnace body 11, and power is supplied to the heating rods 12 so that the heating rods 12 heat the internal space of the furnace body 11. At the same time, an exhaust port 13 is installed at the top of the furnace body 11, and the exhaust port 13 discharges the excess exhaust gas from the furnace body 11. At the same time, a control module 14 is installed at the top of the furnace body 11, and a pipe 15 is installed at the side end of the control module 14. One end of the pipe 15 is connected to a blast device to transport air to the inside of the control module 14. At the same time, a driving rotating rod 31 is installed at the bottom end of the control module 14. By pressing the two squeezing plates 36, the distance between the two squeezing plates 36 is reduced. By moving the squeezing plates 36, the top end of the second telescopic rod 38 is pulled, and the end of the second telescopic rod 38 is fixed to the inside of the first clamping plate 18. At the same time, the squeezing plate 36 drives the latch 37 and the support plate 17 The internal card slot is disconnected, and the first clamping plate 18 is pulled to slide on the side end of the support plate 17. At the same time, the limit plate 35 is installed on the side end of the first clamping plate 18 through the bearing. By moving the first clamping plate 18, the spacing is expanded. At the same time, the exhaust sleeve 41 itself is a retractable structure. The exhaust sleeve 41 is pressed to retract and move the silicon carbon rod body 19, and the side end of the silicon carbon rod body 19 is aligned with the support sleeve 39. By moving the first clamping plate 18, the first clamping plate 18 drives the limit plate 35 to squeeze the side end of the silicon carbon rod body 19. By sliding the first clamping plate 18 to one side, the limit plate 35 is driven to squeeze the side end of the silicon carbon rod body 19. Silicon carbon rod bodies 19 of different sizes can be installed and fixed, and multiple silicon carbon rod bodies 19 can be suspended and fixed at the same time, which is convenient for heating and sintering the silicon carbon rod body 19.

[0030] By pushing the first clamping plate 18, the end of the extrusion plate 36 is allowed to slide inside the support plate 17, so that the first clamping plate 18 slides horizontally. At the same time, under the reverse force of the two second telescopic rods 38, the second telescopic rods 38 apply a pulling force to the extrusion plate 36, so that the extrusion plate 36 slides inside the first clamping plate 18. At the same time, the extrusion plate 36 drives the latch 37 to move inside the support plate 17. A latch groove is provided inside the support plate 17, and the latch block 27 fits in the latch groove to limit the movement of the first clamping plate 18. By moving the support plate 17, a latch block 27 is installed at the top of the support plate 17, and a latch block 27 is provided at the bottom of the support plate 17. There is a groove, and the block 27 is combined with the groove at the bottom end of the support plate 17. By moving multiple support plates 17 and docking the bottom end of the support plate 17 with another second clamping plate 25, the support plates 17 can be used in combination. According to the specifications of the sintered silicon carbon rod body 19, the spacing of the silicon carbon rod body 19 is adjusted to increase the flexibility of use. Multiple heating rods 12 are installed on the inner wall of the furnace body 11 to heat the internal space of the furnace body 11, so that the interior of the furnace body 11 is heated to sinter the silicon carbon rod body 19. At the same time, during the sintering process, the exhaust gas generated is discharged to the filtering equipment through the exhaust port 13, and after multiple filtrations, it is reasonably discharged.

[0031] The second step, when in use, the two hydraulic rods 47 are driven downward by the control module 14 to extend and retract, so that the hydraulic rods 47 generate a downward thrust on the first slide plate 21, so that the first slide plate 21 drives the driving rotating rod 31 and the telescopic tube 32 to move and stretch, the driving rotating rod 31 and the telescopic tube 32 both penetrate the first slide plate 21, and protrude at the bottom end of the first slide plate 21. At the same time, the driving rotating rod 31 and the telescopic tube 32 are both designed in a segmented manner, driving the internal conveying airflow of the rotating rod 31, and the telescopic tube 32 can drive the end to rotate inside the first slide plate 21. At the same time, the first slide plate 21 moves downward to squeeze the top of the third slide plate 28. At the same time, the first slide plate 21 drives the heat insulation cover 22 to extend and retract, and the heat insulation cover 22 plays a role of partitioning and protecting the driving rotating rod 31 and the telescopic tube 32. The top of the third slide plate 28 is squeezed by the first slide plate 21, and a downward thrust is generated on the third slide plate 28, so that the third slide plate 28 slides downward. At the same time, two first telescopic rods 29 are installed on the side ends of the third slide plate 28. A telescopic rod 29 is stretched under force, and the third slide plate 28 drives the second slide plate 23 to slide downward at the bottom end of the connecting box 24. At the same time, a driving rotating rod 31 and a telescopic tube 32 are also installed inside the second slide plate 23. The second slide plate 23 moves downward, allowing the end of the telescopic tube 32 to be inserted into the inside of the socket 34, and at the same time, the end of the driving rotating rod 31 is connected to the docking shaft 33. At the same time, the docking shaft 33 and the two transmission rods 44 are rotatably connected through the first bevel gear 45. When the driving rotating rod 31 is driven to rotate by the control module 14, the docking shaft 33 inside each connecting box 24 also rotates synchronously, and the end of the transmission rod 44 is connected to the second bevel gear 46. The rotating first bevel gear 45 drives the second bevel gear 46 to rotate, allowing the mounting plate 26 to rotate around the bearing at the side end, driving the mounting plate 26 to rotate, and the silicon carbon rod body 19 is driven to move through the rotation of the mounting plate 26, and the positions of the two silicon carbon rod bodies 19 are adjusted to facilitate uniform heating. In any case, there is a large temperature difference between multiple silicon carbon rod bodies 19.

[0032] During use, after the sintering of multiple silicon carbon rod bodies 19 is completed, the heating of the heating rod 12 is stopped, and the hot air inside the furnace body 11 is discharged through the exhaust port 13, so that the internal silicon carbon rod body 19 can be cooled naturally. At the same time, the two hydraulic rods 47 push the first slide plate 21 to slide downward, so that the first slide plate 21 drives the driving rotating rod 31 and the telescopic tube 32 to be extended and retracted, and the top of the driving rotating rod 31 and the telescopic tube 32 are docked with the connecting box 24. During the continuous pushing process, the third slide plate 28 slides downward inside the connecting box 24, and one side pushes the second slide plate 23 to move and dock at the top of the connecting box 24. At this time, the driving rotating rod 31 is docked with the socket 34 respectively, and the end of the socket 34 is in a state of mutual penetration and connection with the two gas pipes 43. At the same time, one end of the socket 34 extends downward from the bottom end of the connecting box 24 and is connected to the driving rotating rod 31, so that multiple connecting boxes 24 are mutually connected, and the pipe installed at the side end of the control module 14 The exhaust sleeve 41 is provided with a plurality of air outlets 42. The support sleeve 39 and the exhaust sleeve 41 are both made of high temperature resistant materials. The surface of the silicon carbon rod body 19 is cooled by natural wind. At the same time, a natural airflow is generated inside the silicon carbon rod body 19 through the exhaust sleeve 41. The airflow is slowly transported to the inside of the silicon carbon rod body 19 through the exhaust sleeve 41. An air leakage hole 48 is installed on the side end of the support sleeve 39. The airflow is discharged through the air leakage hole 48 to take away the heat, which is convenient for rapid cooling and can reduce the temperature difference between the inside and the outside of the silicon carbon rod body 19 to ensure the sintering quality.

[0033] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A recrystallization furnace for sintering silicon carbon rod blanks, comprising a furnace body (11) and a heating rod (12), characterized in that: At least two support plates (17) are arranged inside the furnace body (11), and a connection box (24) is fixedly installed on the side end of each support plate (17), and a second clamping plate (25) is fixedly installed on the two side ends of each connection box (24), and a mounting plate (26) is rotatably installed on the inner side wall of each second clamping plate (25), and a first clamping plate (18) is slidably installed on the side end of each support plate (17), and a limiting plate (35) is rotatably installed on the inner side of each first clamping plate (18), and two support sleeves (39) are fixedly installed on the side end of each mounting plate (26), and an exhaust sleeve (41) is fixedly installed on the side end of each support sleeve (39), and at least two air outlets (42) are provided on the surface of each exhaust sleeve (41), and two air leakage holes (48) are provided on the side end of each support sleeve (39); The exhaust sleeve (41) is designed in sections and can be extended and retracted. The interior of the exhaust sleeve (41) is designed to be hollow and connected to the mounting plate (26). The plurality of support plates (17) can be slidably assembled and installed with each other.

2. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 1, characterized in that: A socket (34) is provided at the top of each connection box (24), and a docking shaft (33) is rotatably mounted at the top of each connection box (24).

3. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 1, characterized in that: A third slide plate (28) is slidably mounted inside each of the connection boxes (24), and a first telescopic rod (29) is fixedly mounted on the side end of each of the third slide plates (28).

4. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 3, characterized in that: A second slide plate (23) is fixedly mounted on the end of each of the third slide plates (28), a driving rotating rod (31) is disposed on the top of each of the second slide plates (23), and a telescopic tube (32) is disposed on the top of each of the second slide plates (23); The telescopic tube (32) is of telescopic design. The telescopic tube (32) can be stretched and one end of the telescopic tube (32) can be rotated inside the second slide plate (23). The end of the driving rod (31) is engaged with the docking shaft (33), and the end of the telescopic tube (32) is inserted into the socket (34).

5. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 4, characterized in that: A heat insulation cover (22) is fixedly mounted on the surface of each of the second slide plates (23).

6. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 1, characterized in that: A transmission rod (44) is rotatably mounted on both side ends of each connection box (24), a first bevel gear (45) is fixedly mounted on both ends of each transmission rod (44), an air delivery pipe (43) is fixedly mounted on the side end of each connection box (24), and a second bevel gear (46) is fixedly mounted on the side end of each mounting plate (26); The second bevel gear (46) is rotatably engaged with one end of the transmission rod (44), and the end of the air delivery pipe (43) is connected to the mounting plate (26).

7. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 1, characterized in that: Two extrusion plates (36) are slidably mounted inside each of the first clamping plates (18), two silicon carbon rod bodies (19) are arranged at the side ends of each of the first clamping plates (18), and a latching tooth (37) is fixedly mounted at the end of each of the extrusion plates (36).

8. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 7, characterized in that: Two second telescopic rods (38) are fixedly mounted on the side end of each extrusion plate (36).

9. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 1, characterized in that: A base (16) is fixedly mounted inside the furnace body (11), an exhaust port (13) is fixedly mounted at the top of the furnace body (11), a control module (14) is fixedly mounted at the top of the furnace body (11), and a clamping block (27) is fixedly mounted at the top of each support plate (17).

10. A recrystallization furnace for sintering silicon carbon rod blanks as claimed in claim 9, characterized in that: A pipe (15) is fixedly mounted on the side end of the control module (14); a first slide plate (21) is slidably mounted on the end of the control module (14); and two hydraulic rods (47) are fixedly mounted on the top end of the first slide plate (21); The top of the first slide plate (21) is also provided with a driving rotating rod (31) and a telescopic tube (32), and pressure is applied to the top of the third slide plate (28) through the first slide plate (21).

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