Series-connection combined type roasting furnace for roasting large-specification graphite products

Abstract

The invention provides a series combined type roasting furnace for roasting large-size graphite products, and relates to the technical field of roasting furnaces. The series combined type roasting furnace for roasting the large-specification graphite products comprises a carrying frame, a carrying mechanism is arranged on the inner side of the carrying frame, a preheating rotary motor is fixedly connected to the outer side of the carrying frame, and a preheating rotary gear is fixedly connected to the output end of the preheating rotary motor. According to the series combined type roasting furnace for roasting the large-size graphite products, by arranging the preheating rotary cage frame on the inner side of the preheating furnace, formed graphite products can be continuously pushed to pass through the inner side of the preheating furnace one by one, and by arranging the shifting plate on the inner side of the high-temperature furnace, graphite green bodies can be continuously pushed in the high-temperature furnace one by one; therefore, continuous roasting production of graphite products is achieved, and the problem that during large-scale roasting production of graphite product green bodies, roasted finished products need to be continuously taken out in batches and filled into the green bodies, and continuous roasting cannot be conducted is solved.

Description

Technical Field

[0001] The invention relates to the technical field of roasting furnaces, in particular to a series-connected combined roasting furnace for roasting large-size graphite products. Background Art

[0002] Baking furnaces are widely used in metallurgy, chemical industry, refractory materials and other production fields due to their potential advantages of high efficiency, environmental protection, low energy consumption and easy control. In the preparation process of graphite electrodes, baking furnaces are used in the processes of baking graphite electrode raw materials and graphite electrode blanks. In the prior art, most baking furnaces use box-type annular fire channel baking furnaces. This type of baking furnace has a large capacity and can bake multiple products at a time. It uses oil, natural gas or coal.

[0003] Through searching, Chinese patent announcement No. CN117109307B discloses a graphite electrode roasting furnace, which relates to the technical field of roasting furnaces, and comprises a roasting furnace body, wherein a heating chamber for heating graphite electrodes is provided in the roasting furnace body, wherein a mounting frame is provided in the heating chamber, wherein a top plate is fixedly connected to the upper end of the mounting frame, wherein a plurality of mounting plates are provided at the lower end of the top plate, wherein a driving mechanism for driving the mounting plates to move on the top plate is provided on the top plate, wherein two fixing rings for placing graphite electrodes are provided on each of the fixing plates, wherein an adjusting mechanism for changing the distance between the two fixing rings is provided in the heating chamber, and wherein a fixing assembly for fixing the graphite electrode on the fixing ring is provided on the fixing ring.

[0004] With respect to the above-mentioned related technologies, it is believed that the following defects exist: Traditional roasting furnaces are equipped for high-temperature heating in a relatively closed space at a time. However, the continuous process is cumbersome in large-scale production, and it is troublesome to take out the roasted products and fill them with green billets before each roasting. In addition, there are idle periods in batches and continuous operation is impossible.

[0005] During the high-position heating process in the roasting furnace, the green billets may be stacked up, and when the green billets are continuously heated on one side, there will be a problem of uneven heating. Uneven heating during roasting will lead to a decrease in product quality.

[0006] The roasting furnace requires manual assistance every time it is roasted, and traditional roasting furnaces are dangerous for workers to get close to due to the high temperature. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a series-connected combined roasting furnace for roasting large-sized graphite products, which solves the problems raised in the above background technology.

[0008] To achieve the above purpose, the present invention is implemented through the following technical solutions: a series combined roasting furnace for roasting large-sized graphite products, including a transport frame, a transport mechanism is arranged inside the transport frame, a preheating rotary motor is fixedly connected to the outside of the transport frame, a preheating rotary gear is fixedly connected to the output end of the preheating rotary motor, a preheating rotary cage is meshed with the surface of the preheating rotary gear, a preheating furnace is arranged outside the preheating rotary cage, one end of the preheating rotary cage away from the preheating rotary motor is connected to a high-temperature furnace, one end of the high-temperature furnace away from the preheating furnace is connected to and penetrated by an insulation bin, a transposition and flipping motor is fixedly connected to the inside of the insulation bin, and the transposition and flipping motor The output end of the machine is fixedly connected with a transposition and flipping gear, and a baking tray is meshed on the surface of the transposition and flipping gear. The baking tray is rotatably connected to the heat insulation bin, and an outlet plate is fixedly connected to the inner side of the heat insulation bin, and the outlet plate is rotatably connected to the baking tray. A shift motor is fixedly connected to the inner side of the heat insulation bin, and an eccentric disk is fixedly connected to the output end of the shift motor. A cylindrical key is provided on the edge of the end of the eccentric disk away from the shift motor, and a pull-out frame is sleeved on the outer side of the cylindrical key of the eccentric disk, and a fuel supply mechanism is fixedly connected to the lower end of the pull-out frame, and the fuel supply mechanism passes through the baking tray to reach the inner side of the high-temperature furnace, and a heat collecting plate is provided on the inner side of the high-temperature furnace, and an ignition mechanism is provided on the inner side of the end of the high-temperature furnace close to the heat insulation bin.

[0009] Preferably, the preheating rotary cage includes a driving cylinder, a dispersion cylinder bar and a transverse screw push rod. The driving cylinder is cylindrical in shape, and the outer circumferential surface of the driving cylinder is provided with teeth and meshes with the preheating rotary gear. The dispersion cylinder bar is fixedly connected to the edge of the end face of the driving cylinder, and the dispersion cylinder bar is composed of a plurality of groups of long strip arrays. The transverse screw push rod is spiral in shape, and the transverse screw push rod is wound around the dispersion cylinder bar. A selection port is provided at one end of the transverse screw push rod close to the driving cylinder. The selection port is spiral in shape, and an arc-shaped through hole is provided on the surface of the selection port.

[0010] Preferably, the overall shape of the preheating furnace is cylindrical, a feed port is provided on the end face of the preheating furnace, an air inlet is provided on the end of the preheating furnace away from the feed port, the air inlet is connected to the high-temperature furnace, and a discharge port is provided below the end face of the preheating furnace.

[0011] Preferably, the baking tray is in an annular shape as a whole, a circular array of arched through holes is provided on the end surface of the baking tray, a linear array of air inlet grooves is provided on the inner circumference of the baking tray, an interception ring is provided on the inner side of the air inlet groove of the baking tray, and teeth are provided on the outer circumference of the baking tray and mesh with the transposition and flipping gear.

[0012] Preferably, the fuel supply mechanism includes a fuel inlet pipe, which is fixedly connected to the insulation bin, 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, the end face of the push-pull pipe is fixedly connected to and communicated with the jet bin, the end face of the jet bin is fixedly connected to and penetrated by a flamethrower, a flamethrower head is arranged on the surface of the flamethrower, a toggle plate is rotatably connected to the lower end of the surface of the flamethrower, the toggle plate is in sliding contact with the inner wall of the high-temperature furnace, a sliding sleeve is arranged on the outside of the flamethrower, and the sliding sleeve is fixedly connected to the high-temperature furnace.

[0013] Preferably, the heat collecting plate is in the shape of a flat plate, and small holes are arranged on the surface of the heat collecting plate. There are two groups of heat collecting plates which are respectively installed obliquely on both sides of the flame-spraying tube.

[0014] Preferably, the outlet plate is in the shape of a disc-shaped flat plate, an outer sleeve is provided at the center of the outlet plate, the outer sleeve is sleeved on the outside of the push-pull tube, and a discharge port is provided at the lower end of the outlet plate.

[0015] Preferably, the transport mechanism comprises a transport conveyor belt and a filling conveyor belt. Both the transport conveyor belt and the filling conveyor belt are arranged on the inner side of the transport frame. The transport conveyor belt and the filling conveyor belt are distributed at right angles, and a groove is arranged in the middle of the filling conveyor belt.

[0016] Preferably, the jet chamber has a cylindrical shape, an array of jet convex heads are arranged on the surface of the jet chamber, the jet chamber is arranged on the inner side of the baking tray, and a gap is left between the jet convex heads of the jet chamber and the interception ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The series combined roasting furnace for roasting large-size graphite products has a preheating rotary cage frame arranged inside the preheating furnace so that the formed graphite products can be pushed through the inside of the preheating furnace one by one and continuously, and a toggle plate is arranged inside the high-temperature furnace so that the graphite green billets can be pushed one by one and continuously in the high-temperature furnace, thereby achieving continuous roasting production of graphite products and solving the problem that in large-scale roasting production of graphite green billets, the roasted finished products need to be continuously taken out in batches and filled into green billets, and the roasting cannot be carried out continuously.

[0018] The series combined roasting furnace for roasting large-size graphite products is provided with a rotating baking plate to fill the graphite green sheets one by one for rotation roasting, and a reciprocatingly movable jet chamber is provided to roast the rotating green sheets so that the green sheets can be subjected to comprehensive and continuous high-temperature roasting, and an air inlet groove is provided on the inner side of the baking plate so that the back side of the green sheets can also be subjected to high-temperature roasting to prevent uneven roasting, and the graphite green sheets are rotationally roasted by the provided baking plate so that the green sheets can be continuously filled and continuously operated, thereby achieving the effect of continuous and uniform roasting of the graphite products, and solving the problem that the graphite products cannot be continuously and uniformly roasted during large-scale production.

[0019] The series combined baking furnace for baking large-size graphite products collects the remaining heat from the baking tray and the inner side of the high-temperature furnace through a heat collecting plate and releases it to the inner side of the preheating furnace, so that the green body can be dehumidified before baking and can be baked quickly. The input end of the device is arranged at one end of the preheating furnace, so that the feeding end is far away from the high temperature, so that the worker can be close to the inlet end when assisting the operation to reduce the harm to the worker. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention; Figure 2 This is a schematic diagram of the structure of the preheating furnace of the present invention; Figure 3 This is a schematic diagram of the structure of the packing conveyor belt of the present invention; Figure 4 This is a schematic diagram of the structure of the preheating rotary cage of the present invention; Figure 5 This is a schematic diagram of the feed port structure of the present invention; Figure 6 This is a schematic diagram of the high temperature furnace structure of the present invention; Figure 7 This is a schematic diagram of the heat collecting plate structure of the present invention; Figure 8 It is a schematic diagram of the structure of the toggle plate of the present invention; Fig. 9 This is a schematic diagram of the flame-spraying tube structure of the present invention; Fig.10 It is a schematic diagram of the structure of a baking tray of the present invention.

[0021] Among them: 1. Transport frame; 2. Transport mechanism; 21. Transport conveyor belt; 22. Filling conveyor belt; 3. Preheating rotary motor; 4. Preheating rotary gear; 5. Preheating rotary cage; 51. Driving cylinder; 52. Dispersion cylinder bar; 53. Transverse screw push rod; 54. Selection port; 6. Preheating furnace; 61. Feeding port; 62. Air inlet; 63. Discharging port; 7. High temperature furnace; 8. Insulation bin; 9. Transposition and flipping motor; 10. Transposition and flipping gear; 11. Baking tray; 111. Arched through hole; 112. Air inlet groove; 113. Intercepting ring; 12. Outlet plate; 121. Outer sleeve; 122. Discharge port; 13. Shift motor; 14. Eccentric disk; 15. Pull-out frame; 16. Fuel supply mechanism; 161. Fuel inlet pipe; 162. Push-pull pipe; 163. Jet chamber; 164. Flame-spraying pipe; 165. Toggle plate; 166. Sliding sleeve; 17. Heat collecting plate; 18. Ignition mechanism. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0026] like Figure 1-10 As shown, a series combined roasting furnace for roasting large-size graphite products includes a transport frame 1, a transport mechanism 2 is arranged on the inner side of the transport frame 1, a preheating rotary motor 3 is fixedly connected to the outer side of the transport frame 1, the transport mechanism 2 includes a transport conveyor belt 21 and a filling conveyor belt 22, the transport conveyor belt 21 and the filling conveyor belt 22 are both arranged on the inner side of the transport frame 1, the transport conveyor belt 21 and the filling conveyor belt 22 are distributed at right angles, a groove is arranged in the middle of the filling conveyor belt 22, the transport mechanism 2 can use the transport conveyor belt 21 to continuously supply raw material green billets to the device, and by setting the filling conveyor belt 22, the green billets can be filled into the device one by one.

[0027] The output end of the preheating rotary motor 3 is fixedly connected with a preheating rotary gear 4, the surface of the preheating rotary gear 4 is meshed with a preheating rotary cage 5, and a preheating furnace 6 is arranged outside the preheating rotary cage 5. The preheating rotary cage 5 includes a driving cylinder 51, a dispersion cylinder bar 52 and a transverse screw push rod 53. The driving cylinder 51 is cylindrical in shape, and the outer peripheral surface of the driving cylinder 51 is provided with teeth and meshes with the preheating rotary gear 4. The dispersion cylinder bar 52 is fixedly connected to the edge of the end face of the driving cylinder 51, and the dispersion cylinder bar 52 is composed of a plurality of groups of long strip arrays. The transverse screw push rod 53 has a spiral shape and is wound around the dispersion cylinder 52. A selection port 54 is provided at one end of the transverse screw push rod 53 close to the driving cylinder 51. The selection port 54 has a spiral shape and an arc-shaped through hole is provided on the surface of the selection port 54. The preheating rotary cage 5 can rotate and use the transverse screw push rod 53 to push the green body to move forward transversely inside the preheating furnace 6. By setting the dispersion cylinder 52, the incoming heat flow can be evenly dispersed to the inside of the preheating furnace 6.

[0028] The end of the preheating rotary cage 5 away from the preheating rotary motor 3 is connected to the high-temperature furnace 7. The overall shape of the preheating furnace 6 is cylindrical. The end face of the preheating furnace 6 is provided with a feed port 61. The end of the preheating furnace 6 away from the feed port 61 is provided with an air inlet end 62, which is connected to the high-temperature furnace 7. A discharge port 63 is provided below the end face of the preheating furnace 6. The preheating furnace 6 can store the waste heat of the high-temperature furnace 7 to preheat and dehumidify the green graphite products.

[0029] The end of the high-temperature furnace 7 away from the preheating furnace 6 is connected to and penetrates an insulating bin 8, a transposition and flipping motor 9 is fixedly connected to the inner side of the insulating bin 8, and a transposition and flipping gear 10 is fixedly connected to the output end of the transposition and flipping motor 9. A baking tray 11 is meshed on the surface of the transposition and flipping gear 10, and the baking tray 11 is rotatably connected to the insulating bin 8. The baking tray 11 is annular as a whole, and an arched through hole 111 is arranged in a circular array on the end face of the baking tray 11, and an air inlet groove 112 is arranged in a linear array on the inner circumference of the baking tray 11. An interception ring 113 is arranged inside the air inlet groove 112 of the baking tray 11, and teeth are arranged on the outer circumference of the baking tray 11 and meshed with the transposition and flipping gear 10. The baking tray 11 can allow the fuel flame to enter the inner side of the baking tray 11 by arranging the air inlet groove 112, so that the green dough can be evenly baked in all directions. The interception ring 113 is arranged to prevent the green dough from falling during the rotation process, so that it can be continuously heated alone inside the arched through hole 111 to reduce the baking time.

[0030] An outlet plate 12 is fixedly connected to the inner side of the insulation bin 8, and the outlet plate 12 is rotatably connected to the baking tray 11. A shift motor 13 is fixedly connected to the inner side of the insulation bin 8, and an eccentric disk 14 is fixedly connected to the output end of the shift motor 13. A cylindrical key is provided on the edge of the eccentric disk 14 away from the shift motor 13. A pull-out frame 15 is sleeved on the outer side 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 insulation bin 8. A push-pull pipe 162 is slidably connected to the outer side of the fuel inlet pipe 161. The pull-out frame 1 5 is fixedly connected to the outside of the push-pull pipe 162, the end surface of the push-pull pipe 162 is fixedly connected and communicated with the jet chamber 163, the end surface of the jet chamber 163 is fixedly connected and penetrated with the flame-spraying pipe 164, the surface of the flame-spraying pipe 164 is provided with a flame-spraying head, the lower end of the surface of the flame-spraying pipe 164 is rotatably connected with a toggle plate 165, the toggle plate 165 is in sliding contact with the inner wall of the high-temperature furnace 7, the outer side of the flame-spraying pipe 164 is provided with a sliding sleeve 166, the sliding sleeve 166 is fixedly connected to the high-temperature furnace 7, the fuel supply mechanism 16 can provide fuel, and the jet chamber 163 and the flame-spraying pipe 164 are used to spray fuel to generate combustion to heat the product at high temperature.

[0031] 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 at 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 dissipation inside the baking tray 11 and facilitate the discharge of processed products.

[0032] A heat collecting plate 17 is arranged on the inside of the high-temperature furnace 7. The heat collecting plate 17 is a flat plate with small holes on its surface. There are two groups of heat collecting plates 17 which are installed obliquely on both sides of the flame-spraying tube 164. By arranging the heat collecting plates 17, a relatively compact space can be formed on the inside of the high-temperature furnace 7, so that the green body can be continuously baked at high temperature on the inside of the high-temperature furnace 7. By arranging small holes on the surface of the heat collecting plates 17, the high-pressure hot air flow generated by the baking can be collected and sent into the inside of the preheating furnace 6 from the air inlet end 62.

[0033] An ignition mechanism 18 is arranged on the inner side of one end of the high-temperature furnace 7 close to the insulation chamber 8. The ignition mechanism 18 is an existing conventional electrical mechanism that can ignite fuel. The jet chamber 163 is cylindrical in shape, and an array of jet convex heads are arranged on the surface of the jet chamber 163. The jet chamber 163 is arranged on the inner side of the baking tray 11. A gap is left between the jet convex head of the jet chamber 163 and the interception ring 113. The jet chamber 163 can spray fuel to continuously bake the green dough inside the baking tray 11, and the eccentric disk 14 is driven to make the jet chamber 163 move back and forth, which can reduce the baking dead angle on the surface of the green dough.

[0034] When in use, firstly, graphite green bodies are placed on the surface of the transport conveyor belt 21, so that the green bodies are transported one by one to the surface of the filling conveyor belt 22, and the filling conveyor belt 22 is started to transport the green bodies to the inner side of the preheating furnace 6, and the gas and the fuel inlet pipe 161 are connected to provide fuel, and the ignition mechanism 18 is started to ignite, and the heat of the fuel combustion enters the inner side of the preheating furnace 6 from the air inlet end 62 through the heat collecting plate 17, and the preheating rotary motor 3 is started to drive the preheating rotary gear 4 to rotate, so that the preheating rotary cage The rack 5 is driven to rotate by the preheating rotary gear 4, and the green body is driven to move horizontally by the transverse screw push rod 53 rotating inside the preheating furnace 6. The heat entering the air inlet end 62 is diffused from the center of the dispersion cylinder 52 to heat the green body inside the preheating furnace 6 for dehumidification and drying. The transverse screw push rod 53 rotates to push the green body from the discharge port 122 into the inside of the high-temperature furnace 7. The fuel sprayed from the flamethrower 164 is ignited by the ignition mechanism 18 to generate heat to burn the green body at high temperature. By starting the shift motor 1 3 drives the eccentric disk 14 to rotate, so that the eccentric disk 14 rotates and pushes the pull-out frame 15 to move back and forth, so that the fuel supply mechanism 16 is pulled and pushed, and the flame-spraying tube 164 is extended and the toggle plate 165 slides and folds over the green dough. When the flame-spraying tube 164 is reset, the toggle plate 165 pushes the green dough to move, so that the green dough is gradually close to the baking tray 11, until the green dough is pushed into the inner side of the arched through hole 111, and the transposition flipping motor 9 is started to drive the transposition flipping gear 10 to rotate, so that the transposition flipping gear 10 pushes The movable baking plate 11 rotates so that the green pieces can be pushed into the arched through hole 111 one by one continuously. The ignition mechanism 18 ignites the fuel sprayed from the jet chamber 163 to bake the green pieces. At the same time, the jet chamber 163 is shifted laterally by the rotation of the eccentric disk 14, and the green pieces inside the baking plate 11 are fully burned. When the baking of the green pieces is completed, the toggle plate 165 pushes the newly entered green pieces into the inner side of the arched through hole 111, and at the same time, the baked green pieces are pushed out from the discharge port 122 to complete the baking of the graphite.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0036] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] 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 series combined roasting furnace for roasting large-sized graphite products, comprising a handling frame (1), characterized in that: A transport mechanism (2) is arranged on the inner side of the transport frame (1); a preheating rotary motor (3) is fixedly connected to the outer side 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) is meshed on the surface of the preheating rotary gear (4); a preheating furnace (6) is arranged on the outer side of the preheating rotary cage (5); and a high-temperature furnace (7) is connected to the end of the preheating rotary cage (5) away from the preheating rotary motor (3); The end of the high temperature furnace (7) away from the preheating furnace (6) is connected to and penetrates a heat insulation bin (8), a transposition and flipping motor (9) is fixedly connected to the inner side of the heat insulation bin (8), a transposition and flipping gear (10) is fixedly connected to the output end of the transposition and flipping motor (9), a baking tray (11) is meshed on the surface of the transposition and flipping gear (10), the baking tray (11) is rotatably connected to the heat insulation bin (8), an outlet plate (12) is fixedly connected to the inner side of the heat insulation bin (8), the outlet plate (12) is rotatably connected to the baking tray (11), and a shift motor (13) is fixedly connected to the inner side of the heat insulation bin (8). ), an eccentric disk (14) is fixedly connected to the output end of the shift motor (13), a cylindrical key is provided at the edge of one end of the eccentric disk (14) away from the shift motor (13), a drawer frame (15) is sleeved on the outer side of the cylindrical key of the eccentric disk (14), a fuel supply mechanism (16) is fixedly connected to the lower end of the drawer frame (15), the fuel supply mechanism (16) passes through the baking tray (11) to reach the inner side of the high-temperature furnace (7), a heat collecting plate (17) is provided on the inner side of the high-temperature furnace (7), and an ignition mechanism (18) is provided on the inner side of one end of the high-temperature furnace (7) close to the heat insulation bin (8).

2. A series combined roasting furnace for roasting large-sized graphite products according to claim 1, characterized in that: The preheating rotary cage (5) comprises a driving cylinder (51), a dispersion cylinder bar (52) and a transverse screw push rod (53). The driving cylinder (51) is cylindrical in shape. The outer peripheral surface of the driving cylinder (51) is provided with teeth and meshes with the preheating rotary gear (4). The dispersion cylinder bar (52) is fixedly connected to the end surface edge of the driving cylinder (51). The dispersion cylinder bar (52) is composed of a plurality of groups of long strip arrays. The transverse screw push rod (53) is spiral in shape. The transverse screw push rod (53) is wound around the dispersion cylinder bar (52). A selection port (54) is provided at one end of the transverse screw push rod (53) close to the driving cylinder (51). The selection port (54) is spiral in shape. An arc-shaped through hole is provided on the surface of the selection port (54).

3. A series combined roasting furnace for roasting large-sized graphite products according to claim 1, characterized in that: The overall shape of the preheating furnace (6) is cylindrical. A feed port (61) is provided at the end surface of the preheating furnace (6). An air inlet (62) is provided at the end of the preheating furnace (6) away from the feed port (61). The air inlet (62) is connected to the high-temperature furnace (7). A discharge port (63) is provided below the end surface of the preheating furnace (6).

4. A series combined roasting furnace for roasting large-sized graphite products according to claim 1, characterized in that: The baking tray (11) is in the shape of a ring as a whole, the end surface of the baking tray (11) is provided with arched through holes (111) in a circular array, the inner circumference of the baking tray (11) is provided with air inlet grooves (112) in a linear array, an interception ring (113) is provided inside the air inlet groove (112) of the baking tray (11), and the outer circumference of the baking tray (11) is provided with teeth which mesh with the transposition and flipping gear (10).

5. A series combined roasting furnace for roasting large-sized graphite products according to claim 4, characterized in that: The fuel supply mechanism (16) comprises a fuel inlet pipe (161), the fuel inlet pipe (161) 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 drawer frame (15) is fixedly connected to the outside of the push-pull pipe (162), the end face of the push-pull pipe (162) is fixedly connected to and communicates with the jet chamber (163), the end face of the jet chamber (163) is fixedly connected to and penetrates a flamethrower (164), a flamethrower head is arranged on the surface of the flamethrower (164), a toggle plate (165) is rotatably connected to the lower end of the surface of the flamethrower (164), the toggle plate (165) is in sliding contact with the inner wall of the high-temperature furnace (7), a sliding sleeve (166) is arranged on the outside of the flamethrower (164), and the sliding sleeve (166) is fixedly connected to the high-temperature furnace (7).

6. A series combined roasting furnace for roasting large-sized graphite products according to claim 7, characterized in that: The heat collecting plate (17) is in the shape of a flat plate, and small holes are arranged on the surface of the heat collecting plate (17). There are two groups of heat collecting plates (17) which are respectively installed obliquely on both sides of the flame-spraying tube (164).

7. A series combined roasting furnace for roasting large-sized graphite products according to claim 5, characterized in that: The outlet plate (12) is in the shape of a disc-shaped flat plate. An outer sleeve (121) is provided at 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).

8. The series combined roasting furnace for roasting large-sized graphite products according to claim 1, characterized in that: The transport mechanism (2) is composed of a transport conveyor belt (21) and a filler conveyor belt (22). The transport conveyor belt (21) and the filler conveyor belt (22) are both arranged on the inner side of the transport frame (1). The transport conveyor belt (21) and the filler conveyor belt (22) are arranged at right angles. A groove is arranged in the middle of the filler conveyor belt (22).

9. A series combined roasting furnace for roasting large-sized graphite products according to claim 5, characterized in that: The jet chamber (163) has a cylindrical outer shape, and an array of jet convex heads are arranged on the surface of the jet chamber (163). The jet chamber (163) is arranged inside the baking tray (11), and a gap is left between the jet convex heads of the jet chamber (163) and the interception ring (113).

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