A combined baking furnace in series for baking large-size graphite products

Abstract

This invention provides a series-connected combined roasting furnace for roasting large-format graphite products, relating to the field of roasting furnace technology. The series-connected combined roasting furnace for roasting large-format graphite products includes a conveying frame, a conveying mechanism disposed inside the conveying frame, and a preheating rotary motor fixedly connected to the outside of the conveying frame. A preheating rotary gear is fixedly connected to the output end of the preheating rotary motor. This series-connected combined roasting furnace for roasting large-format graphite products achieves continuous roasting production of graphite products by setting a preheating rotary cage inside the preheating furnace, allowing the formed graphite products to be continuously pushed through the preheating furnace one by one. By setting a toggle plate inside the high-temperature furnace, the graphite green blanks can be continuously pushed one by one within the high-temperature furnace, thereby achieving continuous roasting production of graphite products. This solves the problem that large-scale roasting production of graphite green blanks requires batches of roasted finished products to be continuously removed and filled with green blanks, preventing continuous roasting.

Description

Technical Field

[0001] This invention relates to the field of roasting furnace technology, specifically to a series-connected roasting furnace for roasting large-format graphite products. Background Technology

[0002] Calcining furnaces are widely used in metallurgy, chemical industry, and refractory materials production due to their potential advantages of high efficiency, environmental friendliness, low energy consumption, and ease of control. In the preparation of graphite electrodes, calcining furnaces are used in processes such as calcining graphite electrode raw materials and calcining graphite electrode blanks. Currently, most calcining furnaces are box-type annular flue calcining furnaces. This type of furnace has a large capacity, can calcine multiple products at once, and uses fuel oil, natural gas, or coal.

[0003] A search revealed Chinese Patent Publication No. CN117109307B, which discloses a graphite electrode calcining furnace, relating to the field of calcining furnace technology. The furnace includes a furnace body with a heating chamber for heating graphite electrodes. A mounting frame is located within the heating chamber, and a top plate is fixed to the upper end of the mounting frame. Multiple mounting plates are located at the lower end of the top plate. A driving mechanism is mounted on the top plate to move the mounting plates. Each mounting plate has two fixing rings for placing graphite electrodes. An adjustment mechanism for changing the distance between the two fixing rings is located within the heating chamber. Each fixing ring has a fixing component for fixing the graphite electrodes to the fixing ring.

[0004] Regarding the aforementioned technologies, the following drawbacks are considered:

[0005] Traditional roasting furnaces are equipped in a single, relatively enclosed space when heating at high temperatures. However, in large-scale production, the continuous process is cumbersome, and it is troublesome to take out the roasted finished product and fill it with green blanks before each roasting. Moreover, there are gaps between batches, which prevent continuous operation.

[0006] During the high-level heating process in the baking furnace, the green billets may be stacked and piled up. When the green billets are continuously heated on one side, there will be uneven heating. Uneven heating during baking will lead to a decline in product quality.

[0007] Each roasting process requires manual assistance, and traditional roasting furnaces pose a danger to workers if they approach due to excessively high temperatures. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a series-connected combined roasting furnace for roasting large-format graphite products, thus solving the problems mentioned in the background section.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a series-connected combined calcining furnace for calcining large-size graphite products, comprising a transport frame, a transport mechanism disposed inside the transport frame, a preheating rotary motor fixedly connected to the outside of the transport frame, a preheating rotary gear fixedly connected to the output end of the preheating rotary motor, a preheating rotary cage meshing with the surface of the preheating rotary gear, a preheating furnace disposed outside the preheating rotary cage, a high-temperature furnace connected to the end of the preheating rotary cage away from the preheating rotary motor, an insulation chamber connected and extending to the end of the high-temperature furnace away from the preheating furnace, a transposition and tilting motor fixedly connected inside the insulation chamber, and a transposition and tilting motor... A shifting and reversing gear is fixedly connected to the output end of the machine. A baking tray meshes with the surface of the shifting and reversing gear. The baking tray is rotatably connected to the heat insulation chamber. An outlet plate is fixedly connected to the inside of the heat insulation chamber. The outlet plate is rotatably connected to the baking tray. A shifting motor is fixedly connected to the inside of the heat insulation chamber. An eccentric plate is fixedly connected to the output end of the shifting motor. A cylindrical key is provided on the edge of the end of the eccentric plate away from the shifting motor. A pull-out frame is sleeved on the outside of the cylindrical key of the eccentric plate. A fuel supply mechanism is fixedly connected to the lower end of the pull-out frame. The fuel supply mechanism passes through the baking tray and reaches the inside of the high-temperature furnace. A heat-concentrating plate is provided inside the high-temperature furnace. An ignition mechanism is provided on the inside of the end of the high-temperature furnace closest to the heat insulation chamber.

[0010] Preferably, the preheating rotary cage includes a drive cylinder, a dispersing strip, and a transverse spiral pusher. The drive cylinder is cylindrical in shape, and its outer circumferential surface is provided with teeth that mesh with the preheating rotary gear. The dispersing strip is fixedly connected to the edge of the drive cylinder end face and is composed of several sets of long strip arrays. The transverse spiral pusher is spiral in shape and is wound around the dispersing strip. A selection port is provided at one end of the transverse spiral pusher near the drive cylinder. The selection port is spiral in shape and has an arc-shaped through hole on its surface.

[0011] Preferably, the preheating furnace has a cylindrical shape, with a feed inlet on the end face and an air inlet at the end away from the feed inlet, which is connected to the high-temperature furnace. A discharge outlet is located below the end face of the preheating furnace.

[0012] Preferably, the baking tray is circular in shape, with arched through holes arranged in a circular array on the end face of the baking tray, air inlets arranged in a linear array on the inner circumference of the baking tray, an intercepting ring arranged inside the air inlets of the baking tray, and teeth arranged on the outer circumference of the baking tray that mesh with the shifting and flipping gear.

[0013] Preferably, the fuel supply mechanism includes a fuel inlet pipe, which is fixedly connected to the heat insulation chamber. A push-pull pipe is slidably connected to the outside of the fuel inlet pipe. A pull-out frame is fixedly connected to the outside of the push-pull pipe. A jet chamber is fixedly connected to and communicates with the end face of the push-pull pipe. A flame-emitting pipe is fixedly connected to and passes through the end face of the jet chamber. A flame-emitting head is provided on the surface of the flame-emitting pipe. A toggle plate is rotatably connected to the lower end of the flame-emitting pipe surface. The toggle plate slides in contact with the inner wall of the high-temperature furnace. A sliding sleeve is provided on the outside of the flame-emitting pipe and is fixedly connected to the high-temperature furnace.

[0014] Preferably, the heat-gathering plate is flat, with small holes on its surface, and two sets of heat-gathering plates are installed at an angle on both sides of the flame-emitting pipe.

[0015] Preferably, the outlet plate is a disc-shaped flat plate with an outer sleeve at the center, which is fitted onto the outside of the push-pull tube, and a discharge port is provided at the lower end of the outlet plate.

[0016] Preferably, the handling mechanism comprises a transport conveyor belt and a filler conveyor belt, both of which are disposed inside the handling frame and are distributed at right angles to each other. A groove is provided in the middle of the filler conveyor belt.

[0017] Preferably, the jet chamber is cylindrical in shape, with jet protrusions arrayed on its surface, and is located inside the baking tray, with a gap between the jet protrusions and the intercepting ring.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This series-connected combined calcining furnace for calcining large-format graphite products achieves continuous calcination production of graphite products by installing a preheating rotary cage inside the preheating furnace, allowing the formed graphite products to be continuously pushed through the preheating furnace one by one, and by installing a toggle plate inside the high-temperature furnace, allowing the graphite green blanks to be continuously pushed one by one within the high-temperature furnace. This solves the problem that large-scale calcination production of graphite green blanks requires batches of calcined finished products to be continuously removed and filled with green blanks, making continuous calcination impossible.

[0020] This series-connected combined calcining furnace for calcining large-format graphite products uses a rotating baking pan to fill and calcine graphite green blanks one by one. A reciprocating jet chamber further calcines the rotating green blanks, ensuring they receive comprehensive and continuous high-temperature calcination. Air inlets inside the baking pans allow the back side of the green blanks to also receive high-temperature calcination, preventing uneven calcination. The rotating baking pans continuously fill the green blanks, achieving continuous and uniform calcination of the graphite products and solving the problem of inconsistent and uniform calcination in large-scale graphite production.

[0021] This series-connected roasting furnace for roasting large-format graphite products collects and releases the residual heat from the roasting pan and the high-temperature furnace inside through a heat-collecting plate to the inside of the preheating furnace. This allows the green billets to be dehumidified before roasting, enabling them to be roasted quickly. By placing the input end of the device at one end of the preheating furnace, the feeding end is kept away from the high temperature, allowing workers to be closer to the inlet end during auxiliary operation, thus reducing the risk of injury to workers. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the preheating furnace structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the packing conveyor belt structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the preheating rotary cage structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the feed inlet structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the high-temperature furnace structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the heat-concentrating plate structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the toggle plate structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the flamethrower tube structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the baking tray structure of the present invention.

[0032] The components include: 1. Handling frame; 2. Handling mechanism; 21. Conveyor belt; 22. Filler conveyor belt; 3. Preheating rotary motor; 4. Preheating rotary gear; 5. Preheating rotary cage; 51. Drive cylinder; 52. Dispersing cylinder bar; 53. Lateral spiral push rod; 54. Selection port; 6. Preheating furnace; 61. Feed inlet; 62. Air inlet; 63. Discharge outlet; 7. High-temperature furnace; 8. Insulated chamber; 9. Reversing motor; 10. Reversing gear. 11. Baking tray; 111. Arched through hole; 112. Air inlet slot; 113. Interception ring; 12. Outlet plate; 121. Outer tube; 122. Discharge port; 13. Shifting motor; 14. Eccentric plate; 15. Pull-out frame; 16. Fuel supply mechanism; 161. Fuel inlet pipe; 162. Push-pull pipe; 163. Jet chamber; 164. Flame tube; 165. Actuating plate; 166. Sliding sleeve; 17. Heat-concentrating plate; 18. Ignition mechanism. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0037] like Figure 1-10 As shown, a series-connected roasting furnace for roasting large-size graphite products includes a transport frame 1, a transport mechanism 2 arranged inside the transport frame 1, and a preheating rotary motor 3 fixedly connected to the outside of the transport frame 1. The transport mechanism 2 consists of a transport conveyor belt 21 and a filling conveyor belt 22. Both the transport conveyor belt 21 and the filling conveyor belt 22 are arranged inside the transport frame 1 and are distributed at right angles. A groove is provided in the middle of the filling conveyor belt 22. The transport mechanism 2 can continuously supply raw material green billets to the device using the transport conveyor belt 21, and the green billets can be filled into the device one by one by the filling conveyor belt 22.

[0038] A preheating rotary motor 3 is fixedly connected to a preheating rotary gear 4 at its output end. A preheating rotary cage 5 meshes with the surface of the preheating rotary gear 4. A preheating furnace 6 is arranged on the outside of the preheating rotary cage 5. The preheating rotary cage 5 includes a drive cylinder 51, dispersing strips 52, and a transverse spiral pusher 53. The drive cylinder 51 is cylindrical in shape, and its outer circumferential surface is provided with teeth that mesh with the preheating rotary gear 4. The dispersing strips 52 are fixedly connected to the edge of the end face of the drive cylinder 51, and the dispersing strips 52 consist of several groups of long strip arrays. The transverse spiral pusher 53 is spiral in shape and is wound around the dispersing cylinder 52. The end of the transverse spiral pusher 53 near the drive cylinder 51 is provided with a selection port 54. The selection port 54 is spiral in shape and has an arc-shaped through hole on its surface. The preheating rotary cage 5 can be driven by the transverse spiral pusher 53 to move the green billet forward inside the preheating furnace 6 by rotation. The dispersing cylinder 52 can evenly disperse the incoming heat flow inside the preheating furnace 6.

[0039] The end of the preheating rotary cage 5 away from the preheating rotary motor 3 is connected to the high-temperature furnace 7. The preheating furnace 6 is cylindrical in shape. The end face of the preheating furnace 6 is provided with a feed inlet 61. The end of the preheating furnace 6 away from the feed inlet 61 is provided with an air inlet 62, which is connected to the high-temperature furnace 7. The bottom of the end face of the preheating furnace 6 is provided with a discharge outlet 63. The preheating furnace 6 can store the residual heat of the high-temperature furnace 7 and preheat and dehumidify the graphite product green billet.

[0040] A heat insulation chamber 8 is connected and passes through the end of the high-temperature furnace 7 away from the preheating furnace 6. A shifting and turning motor 9 is fixedly connected to the inside of the heat insulation chamber 8. A shifting and turning gear 10 is fixedly connected to the output end of the shifting and turning motor 9. A baking tray 11 is meshed on the surface of the shifting and turning gear 10. The baking tray 11 is rotatably connected to the heat insulation chamber 8. The baking tray 11 is generally circular. Arched through holes 111 are arranged in a circular array on the end face of the baking tray 11. Air inlet grooves 112 are arranged in a linear array on the inner circumference of the baking tray 11. An intercepting ring 113 is arranged inside the air inlet grooves 112 of the baking tray 11. Teeth are arranged on the outer circumference of the baking tray 11 and mesh with the shifting and turning gear 10. The baking tray 11 can allow the fuel flame to enter the inner side of the baking tray 11 through the air inlet grooves 112, so that the green blank can be roasted evenly in all directions. The intercepting ring 113 prevents the green blank from falling during rotation, so that it can be continuously heated separately inside the arched through holes 111, reducing the roasting time.

[0041] An outlet plate 12 is fixedly connected to the inside of the heat insulation chamber 8. The outlet plate 12 is rotatably connected to the baking tray 11. A shifting motor 13 is fixedly connected to the inside of the heat insulation chamber 8. An eccentric disk 14 is fixedly connected to the output end of the shifting motor 13. A cylindrical key is provided on the edge of the end of the eccentric disk 14 away from the shifting motor 13. A pull-out frame 15 is sleeved on the outside of the cylindrical key of the eccentric disk 14. A fuel supply mechanism 16 is fixedly connected to the lower end of the pull-out frame 15. The fuel supply mechanism 16 includes a fuel inlet pipe 161, which is fixedly connected to the heat insulation chamber 8. A push-pull pipe 162 is slidably connected to the outside of the fuel inlet pipe 161. The pull-out frame 161... 5 is fixedly connected to the outside of the push-pull tube 162. The end face of the push-pull tube 162 is fixedly connected to and connected to the jet chamber 163. The end face of the jet chamber 163 is fixedly connected to and connected to the flame pipe 164. The surface of the flame pipe 164 is provided with a flame head. The lower end of the surface of the flame pipe 164 is rotatably connected to the actuating plate 165. The actuating plate 165 slides in contact with the inner wall of the high-temperature furnace 7. A sliding sleeve 166 is provided on the outside of the flame pipe 164. The sliding sleeve 166 is fixedly connected to the high-temperature furnace 7. The fuel supply mechanism 16 can provide fuel. The jet chamber 163 and the flame pipe 164 are used to spray fuel to generate combustion and heat the product at high temperature.

[0042] The fuel supply mechanism 16 passes through the baking tray 11 and reaches the inside of the high-temperature furnace 7. The outlet plate 12 is a disc-shaped flat plate. An outer sleeve 121 is provided in the center of the outlet plate 12. The outer sleeve 121 is sleeved on the outside of the push-pull tube 162. A discharge port 122 is provided at the lower end of the outlet plate 12. The outlet plate 12 can reduce the heat loss inside the baking tray 11 and facilitate the discharge of processed products.

[0043] A heat-concentrating plate 17 is provided inside the high-temperature furnace 7. The heat-concentrating plate 17 is flat in shape and has small holes on its surface. There are two sets of heat-concentrating plates 17, which are installed at an angle on both sides of the flame tube 164. By setting the heat-concentrating plate 17, a relatively tight space can be formed inside the high-temperature furnace 7, so that the green blank can be continuously baked at high temperature inside the high-temperature furnace 7. By setting small holes on the surface of the heat-concentrating plate 17, the high-pressure hot air flow generated during baking can be collected and sent into the preheating furnace 6 from the air inlet 62.

[0044] An ignition mechanism 18 is provided on the inner side of the end of the high-temperature furnace 7 that is close to the heat insulation chamber 8. The ignition mechanism 18 is a conventional electrical mechanism that can ignite fuel. The jet chamber 163 is cylindrical in shape and has jet protrusions arranged in an array on its surface. The jet chamber 163 is located inside the baking tray 11. There is a gap between the jet protrusions of the jet chamber 163 and the interception ring 113. The jet chamber 163 can spray fuel to continuously bake the green blanks inside the baking tray 11. Furthermore, the jet chamber 163 is moved back and forth by the drive of the eccentric disk 14, which can reduce the baking dead corners on the surface of the green blanks.

[0045] In operation, the graphite green billets are first placed on the surface of the conveyor belt 21, and then transported one by one to the surface of the packing conveyor belt 22. The packing conveyor belt 22 is started to transport the green billets to the inside of the preheating furnace 6. The gas and fuel inlet pipe 161 is connected to provide fuel, and the ignition mechanism 18 is started to ignite the fuel. The heat from the fuel combustion enters the inside of the preheating furnace 6 through the heat-concentrating plate 17 from the air inlet 62. The preheating rotary motor 3 is started to drive the preheating rotary gear 4 to rotate, so that the preheating rotary cage... The frame 5 is driven to rotate by the preheating rotary gear 4, and the green billet is pushed to move laterally inside the preheating furnace 6 by the rotation of the transverse spiral pusher 53. The heat entering the air inlet 62 diffuses from the center of the dispersion bar 52 to heat the green billet inside the preheating furnace 6, thus dehumidifying and drying it. The rotation of the transverse spiral pusher 53 pushes the green billet from the discharge port 122 into the high-temperature furnace 7. The fuel sprayed from the burner pipe 164 is ignited by the ignition mechanism 18, generating heat to burn the green billet at high temperature. The shifting motor 1 is started. 3 drives the eccentric disk 14 to rotate, causing the eccentric disk 14 to rotate and push the pull-out frame 15 to move back and forth, thus pulling the fuel supply mechanism 16. After the flame tube 164 extends, the actuating plate 165 slides and folds over the green blank. When the flame tube 164 returns to its original position, the actuating plate 165 pushes the green blank to move, so that the green blank gradually approaches the baking tray 11 until the green blank is pushed into the inner side of the arched through hole 111. By starting the shifting and flipping motor 9, the shifting and flipping gear 10 is driven to rotate, causing the shifting and flipping gear 10 to push... The rotating baking tray 11 allows the green blanks to be continuously pushed into the arched through-hole 111 one by one. The ignition mechanism 18 ignites the fuel sprayed from the jet chamber 163 to bake the green blanks. At the same time, the jet chamber 163 is moved laterally by the rotation of the eccentric disk 14, which fully burns the green blanks inside the baking tray 11. When the green blanks are baked, the actuating plate 165 pushes the newly added green blanks into the arched through-hole 111, and at the same time pushes the baked green blanks out from the discharge port 122 to complete the baking of graphite.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0047] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A series-connected combined roasting furnace for roasting large-size graphite products, comprising a transport frame (1), characterized in that: The transport frame (1) is provided with a transport mechanism (2) inside. A preheating rotary motor (3) is fixedly connected to the outside of the transport frame (1). A preheating rotary gear (4) is fixedly connected to the output end of the preheating rotary motor (3). A preheating rotary cage (5) meshes with the surface of the preheating rotary gear (4). A preheating furnace (6) is provided on the outside of the preheating rotary cage (5). A high-temperature furnace (7) is connected to the end of the preheating rotary cage (5) away from the preheating rotary motor (3). The preheating rotary cage (5) includes a drive cylinder (51), a dispersing cylinder bar (52), and a transverse spiral push rod (53). The drive cylinder (51) is cylindrical in shape. The outer circumference of the drive cylinder (51) is provided with The gear is toothed and meshes with the preheating rotary gear (4). The dispersing cylinder (52) is fixedly connected to the end face edge of the drive cylinder (51). The dispersing cylinder (52) is composed of several long strip arrays. The transverse spiral push rod (53) is spiral in shape and is wrapped around the dispersing cylinder (52). The transverse spiral push rod (53) is provided with a selection port (54) at one end near the drive cylinder (51). The selection port (54) is spiral in shape and has an arc-shaped through hole on its surface. The preheating rotary cage (5) is rotated and uses the transverse spiral push rod (53) to push the green billet to move laterally forward inside the preheating furnace (6). The high-temperature furnace (7) is connected to and has a heat insulation chamber (8) at the end away from the preheating furnace (6). A shifting and turning motor (9) is fixedly connected to the inside of the heat insulation chamber (8). A shifting and turning gear (10) is fixedly connected to the output end of the shifting and turning motor (9). A baking tray (11) meshes with the surface of the shifting and turning gear (10). The baking tray (11) is rotatably connected to the heat insulation chamber (8). An outlet plate (12) is fixedly connected to the inside of the heat insulation chamber (8). The outlet plate (12) is rotatably connected to the baking tray (11). The baking tray (11) is circular in shape. An arched through hole (111) is arranged in a circular array on the end face of the baking tray (11). An air inlet groove (112) is arranged in a straight array on the inner circumference of the baking tray (11). An intercepting ring (113) is arranged inside the air inlet groove (112) of the baking tray (11). Teeth are arranged on the outer circumference of the baking tray (11) and they are connected to the shifting and turning gear (11). The rotating gear (10) meshes, and the baking tray (11) is provided with an air inlet groove (112) so that the fuel flame can enter the inside of the baking tray (11). The intercepting ring (113) is provided to prevent the green blank from falling during rotation. The heat insulation chamber (8) is fixedly connected to the inside of the heat insulation chamber (8). The output end of the heat insulation chamber (13) is fixedly connected to the eccentric plate (14). The edge of the eccentric plate (14) away from the heat insulation chamber (13) is provided with a cylindrical key. The cylindrical key of the eccentric plate (14) is sleeved on the outside of the cylindrical key of the eccentric plate (14). The lower end of the pull-out frame (15) is fixedly connected to the fuel supply mechanism (16). The fuel supply mechanism (16) passes through the baking tray (11) and reaches the inside of the high temperature furnace (7). The inside of the high temperature furnace (7) is provided with a heat-concentrating plate (17). The inside of the high temperature furnace (7) that is close to the heat insulation chamber (8) is provided with an ignition mechanism (18).

2. The series-connected combined roasting furnace for roasting large-size graphite products according to claim 1, characterized in that: The preheating furnace (6) has a cylindrical shape. A feed inlet (61) is provided on the end face of the preheating furnace (6). An air inlet (62) is provided on the end of the preheating furnace (6) away from the feed inlet (61). The air inlet (62) is connected to the high-temperature furnace (7). A discharge outlet (63) is provided below the end face of the preheating furnace (6).

3. The series-connected combined roasting furnace for roasting large-size graphite products according to claim 1, characterized in that: The fuel supply mechanism (16) includes a fuel inlet pipe (161), which is fixedly connected to the heat insulation chamber (8). A push-pull pipe (162) is slidably connected to the outside of the fuel inlet pipe (161). A pull-out frame (15) is fixedly connected to the outside of the push-pull pipe (162). A jet chamber (163) is fixedly connected to and communicates with the end face of the push-pull pipe (162). A flame-spraying pipe (164) is fixedly connected to and passes through the end face of the jet chamber (163). A flame-spraying head is provided on the surface of the flame-spraying pipe (164). A toggle plate (165) is rotatably connected to the lower end of the surface of the flame-spraying pipe (164). The toggle plate (165) slides in contact with the inner wall of the high-temperature furnace (7). A sliding sleeve (166) is provided on the outside of the flame-spraying pipe (164). The sliding sleeve (166) is fixedly connected to the high-temperature furnace (7).

4. A series-connected combined roasting furnace for roasting large-format graphite products according to claim 1, characterized in that: The heat-concentrating plate (17) is flat in shape and has small holes on its surface. There are two sets of heat-concentrating plates (17) installed at an angle on both sides of the flame-spraying pipe (164).

5. A series-connected combined roasting furnace for roasting large-size graphite products according to claim 3, characterized in that: The outlet plate (12) is a disc-shaped flat plate. An outer sleeve (121) is provided in the center of the outlet plate (12). The outer sleeve (121) is sleeved on the outside of the push-pull tube (162). A discharge port (122) is provided at the lower end of the outlet plate (12).

6. A series-connected combined roasting furnace for roasting large-format graphite products according to claim 1, characterized in that: The handling mechanism (2) consists of a transport conveyor belt (21) and a filling conveyor belt (22). Both the transport conveyor belt (21) and the filling conveyor belt (22) are located inside the handling frame (1). The transport conveyor belt (21) and the filling conveyor belt (22) are distributed at right angles. A groove is provided in the middle of the filling conveyor belt (22).

7. A series-connected combined roasting furnace for roasting large-size graphite products according to claim 3, characterized in that: The jet chamber (163) is cylindrical in shape. The surface of the jet chamber (163) is arrayed with jet protrusions. The jet chamber (163) is located inside the baking tray (11). There is a gap between the jet protrusions of the jet chamber (163) and the intercepting ring (113).

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