A secondary baking device and baking method for graphite electrode production

Abstract

The present invention discloses a secondary roasting device and roasting method for graphite electrode production, which belongs to the technical field of graphite electrode roasting devices, wherein the secondary roasting device for graphite electrode production includes a furnace body and two slide rails arranged on one side of the furnace body, and a bottom plate is slidably assembled on the slide rail; the load-bearing plate can be pulled out of the furnace body by the cooperation of the hook plate and the connecting groove, and when the new load-bearing plate falls onto the inner stop bar and the outer stop bar, the reversing component can release the locking relationship between it and the inner stop bar, thereby changing the pulling direction of the auxiliary steel cable on the guide block, so that the auxiliary steel cable can pull the bottom plate gradually close to the furnace body, and push the load-bearing plate into the furnace body through the push rod, and less manual intervention is required in the whole process, thereby making the process of entering and exiting the furnace safer, and the whole operation is completed only by the cooperation of the main steel cable and the auxiliary steel cable, so that the overall structure of the device is simple and easy to maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of graphite electrode roasting devices, in particular to a secondary roasting device and a roasting method for producing graphite electrodes. Background Art

[0002] The production of graphite electrodes includes steps such as raw material preparation (petroleum coke, asphalt coke, etc.), crushing, batching, kneading, molding, primary roasting, impregnation, secondary roasting, and graphitization.

[0003] Chinese patent CN218097234U discloses a graphite electrode roasting furnace unloading device, which is equipped with a supporting platform and a toothed plate. When the transport vehicle moves to the end of the track, the toothed plate will engage with the gear at the shaft end of the supporting platform, thereby driving the supporting platform to flip along the shaft end so that the workpiece slides onto the receiving device for automatic unloading operation.

[0004] The above-mentioned device uses a transport vehicle to realize the operation of taking the graphite electrodes out of the furnace, but in actual application, the staff still need to work close to the furnace body, which poses certain safety hazards. In addition, it is difficult to load the loaded graphite electrodes into the furnace body through the above-mentioned device. In summary, the above-mentioned device still has room for improvement.

[0005] Therefore, it is necessary to provide a secondary baking device and baking method for graphite electrode production to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a secondary roasting device and roasting method for graphite electrode production, so as to solve the problem that the existing device proposed in the above background technology uses a transport vehicle to realize the operation of taking the graphite electrode out of the furnace, but in actual application, the staff still need to work close to the furnace body, which poses certain safety hazards.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a secondary baking device for graphite electrode production, comprising a furnace body and two slide rails arranged on one side of the furnace body, a bottom plate slidably mounted on the slide rail, outer baffles fixedly connected to both sides of the top of the bottom plate, and inner baffles arranged at the inner side of the outer baffles, a bearing plate arranged above the outer baffles and the inner baffles, and the bearing plate can be pushed to move by push rods on the top of the outer baffles and the inner baffles, a guide block fixedly mounted on the bottom surface of the push rod, and the guide block slides between the two inner baffles;

[0008] A secondary steel cable is provided between the two slide rails, and a reversing assembly is provided between the two inner stop bars, and the reversing assembly can be engaged with the inner stop bar. One end of the secondary steel cable is fixedly connected to a side of the guide block close to the reversing assembly, and the other end of the secondary steel cable passes around the reversing assembly and extends to the pulley at the end of the slide rail, and finally passes around the pulley and extends in the direction away from the furnace body. When the reversing assembly is disconnected from the inner stop bar, the secondary steel cable pulls the reversing assembly to move synchronously, and can push the bearing plate into the furnace body through the push rod.

[0009] As a further solution of the present invention: the reversing assembly includes a reversing shaft arranged between the two inner stop bars, and connecting blocks are rotatably installed at both ends of the reversing shaft. The auxiliary steel cable passes around the outside of the reversing shaft, and the connecting block is elastically connected to a clamping block on a side close to the inner stop bar. A through groove is provided on the inner stop bar, and inclined surfaces are provided on both sides of the end of the clamping block close to the inner stop bar. When the inclined surface is fully inserted into the through groove, the clamping block and the inner stop bar are locked.

[0010] As a further solution of the present invention: a pressure rod is elastically connected in the through groove, and an inclined extrusion surface is provided at one end of the pressure rod located outside the through groove. A lifting plate is provided between the inner baffle and the outer baffle, and the lifting plate is elastically connected to the bottom plate. During the downward movement of the lifting plate, it can contact the inclined extrusion surface on the pressure rod, thereby pushing the pressure rod. The top surface of the lifting plate is hinged with a pressure strip, and in the initial state, the pressure strip is in a vertical state.

[0011] As a further solution of the present invention: a notch is provided on the inner side surface of the inner stop bar, the notch is located at one end of the inner stop bar close to the furnace body, and a side of the guide block close to the inner stop bar is elastically connected to a limit block that matches the notch, and the end of the limit block located inside the notch is an arc surface.

[0012] As a further solution of the present invention: a support rod is hinged on the push rod, and a hook plate is rotatably connected to the bottom surface of the support rod. In the initial state, the hook plate is in a vertical state and can only deflect inward relative to the support rod. A connecting groove that cooperates with the hook plate is provided on the supporting plate.

[0013] As a further solution of the present invention: a push rod is threadedly connected to the push rod.

[0014] As a further solution of the present invention: a front stopper and a rear stopper are respectively fixed on the top of the slide rail and at both ends.

[0015] As a further solution of the present invention: one side of the top of the hook plate extends upward to form a raised portion, and when the hook plate is in a vertical state, the top surface of the raised portion can contact the bottom surface of the support rod.

[0016] As a further solution of the present invention: a groove matching with the support rod is formed on the push rod, and one end of the support rod away from the hook plate is rotatably connected to the groove.

[0017] A method for roasting using the above-mentioned secondary roasting device for graphite electrode production includes the following steps: pulling the bottom plate to one side of the furnace body by means of an auxiliary steel cable, and when the hook plate cooperates with the connecting groove, the auxiliary steel cable can pull the push rod to move the supporting plate out of the furnace body; when the supporting plate is placed from top to bottom on the top of the inner and outer baffles, the clamping relationship between the reversing assembly and the inner baffle is released, and when the auxiliary steel cable drives the bottom plate to move to one side of the furnace body, the auxiliary steel cable can drive the reversing assembly to move synchronously, thereby pushing the supporting plate into the furnace body.

[0018] Compared with the prior art, the beneficial effect of the present invention is that this device can pull the carrying plate out of the furnace body through the cooperation of the hook plate and the connecting groove. When the new carrying plate falls on the inner and outer stop bars, the reversing assembly can release the locking relationship with the inner stop bar, thereby changing the pulling direction of the auxiliary steel cable on the guide block, so that the auxiliary steel cable can pull the bottom plate gradually closer to the furnace body, and push the carrying plate into the furnace body through the top rod. There is less manual intervention in the whole process, which makes the process of entering and exiting the furnace safer, and the entire operation is completed only by the cooperation of the main steel cable and the auxiliary steel cable, so that the overall structure of the device is simple and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a distribution diagram of the inner and outer baffles of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the carrier plate and the bottom plate of the present invention;

[0023] Figure 4 This invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0024] Figure 5 is a cross-sectional view of the base plate and the load-bearing plate of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the main steel cable and the auxiliary steel cable of the present invention;

[0026] Figure 7 This is a schematic diagram of the positioning bar and limiting groove structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the pressure rod and the clamping block of the present invention;

[0028] Figure 9 Schematic diagram of the torsion unit structure of the present invention;

[0029] Figure 10 It is a schematic diagram of the inclined surface and the extrusion surface structure of the present invention;

[0030] Figure 11 is a schematic diagram of the layering strip of the present invention in a vertical state;

[0031] Figure 12 is a schematic diagram of the layering strip of the present invention in a horizontal state;

[0032] Figure 13 It is a schematic diagram of the limit block structure of the present invention;

[0033] Figure 14 It is a schematic diagram of the hook plate of the present invention pulling the carrying plate.

[0034] Figure: 1, furnace body; 2, furnace door; 3, slide rail; 301, rear stopper; 302, front stopper; 4, control cabinet; 5, bottom plate; 501, outer stopper; 5011, limit groove; 502, inner stopper; 5021, stopper; 5022, notch; 5023, through groove; 503, slider; 6, push rod; 601, guide block; 7, bearing plate; 701, positioning bar; 702, connecting groove; 8, pulley; 9, boss; 901, positioning Groove; 10. Push rod; 11. Main steel cable; 12. Auxiliary steel cable; 13. Support rod; 14. Reversing shaft; 15. Connecting block; 16. Hook plate; 1601. Raised portion; 17. Block; 1701. Inclined surface; 18. Press rod; 1801. Protrusion; 1802. Extrusion surface; 19. Pressing strip; 1901. Rotating shaft; 1902. Torsion unit; 20. Connecting shaft; 21. Lifting plate; 22. Base; 23. Limiting block; 2301. Arc surface. DETAILED DESCRIPTION

[0035] like Figures 1-10 As shown, a secondary baking device and baking method for graphite electrode production includes a furnace body 1 and two slide rails 3 arranged on one side of the furnace body 1. The side of the furnace body 1 close to the slide rail 3 is sealed by a furnace door 2. The furnace door 2 can move up and down relative to the furnace body 1. The connection structure between the furnace door 2 and the furnace body 1 is a mature technical means and will not be described in detail here.

[0036] The bottom plate 5 is slidably mounted on the slide rail 3. Figure 1As shown, both sides of the top of the bottom plate 5 are fixedly connected with outer baffles 501, and an inner baffle 502 is provided at the inner side of the outer baffle 501. The inner baffle 502 is fixedly connected to the bottom plate 5. In order to transport the graphite electrode, a supporting plate 7 for placing the graphite electrode is provided above the outer baffles 501 and the inner baffle 502. The supporting plate 7 can be driven to move on the horizontal plane by a push rod 6 above the outer baffles 501 and the inner baffle 502. Specifically, a guide block 601 is fixedly installed on the bottom surface of the push rod 6, and the guide block 601 slides between the two inner baffles 502.

[0037] Combine Figure 1-Figure 5 As shown, a main steel cable 11 and an auxiliary steel cable 12 are provided between the two slide rails 3 for pulling the guide block 601 in two directions. Specifically, a reversing assembly is provided between the two inner stop bars 502, and the reversing assembly can be engaged with the inner stop bar 502. One end of the auxiliary steel cable 12 is fixedly connected to a side of the guide block 601 close to the reversing assembly, and the other end of the auxiliary steel cable 12 passes around the reversing assembly and extends to the pulley 8 at the end of the slide rail 3, and finally passes around the pulley 8 and extends in a direction away from the furnace body 1. The pulley 8 is arranged at one end of the slide rail 3 close to the furnace body 1, and the pulley 8 is fixed to the ground. Through this structure, when the reversing assembly is engaged with the inner stop bar 502, the push rod 6 can be pulled by the auxiliary steel cable 12, and when the reversing assembly is disconnected from the inner stop bar 502, the auxiliary steel cable 12 can pull the reversing assembly and the push rod 6 to move synchronously, thereby realizing the loading and unloading of the graphite electrode.

[0038] Combine Figure 5-10 As shown, the reversing assembly includes a reversing shaft 14 disposed between the two inner stop bars 502, and connecting blocks 15 are rotatably mounted at both ends of the reversing shaft 14 through bearings, and the connecting blocks 15 are fitted to the inner wall of the inner stop bar 502. Figure 5 As shown, the top side of the inner stop bar 502 extends toward the direction of the connecting block 15 and forms a stop portion 5021, and the connecting block 15 is arranged between the stop portion 5021 and the bottom plate 5, and the auxiliary steel cable 12 passes around the outside of the reversing shaft 14. Figure 7-Figure 8 As shown, a clamping block 17 is elastically connected to one side of the connecting block 15 close to the inner stop bar 502, and a through slot 5023 is formed on the inner stop bar 502;

[0039] Further, combined with Figure 10As shown, the block 17 is provided with inclined surfaces 1701 on both sides of one end close to the inner stop bar 502. Through this structure, when the inclined surface 1701 on the block 17 is fully inserted into the through groove 5023, the block 17 can be engaged and locked with the inner stop bar 502. When only a part of the inclined surface 1701 is in the through groove 5023, the block 17 can overcome the elastic force between it and the connecting block 15 and move out of the through groove 5023. Figure 8 、 Figure 10 As shown, a pressure rod 18 is elastically connected to the through slot 5023. One end of the pressure rod 18 located inside the through slot 5023 can contact the block 17, while the end of the pressure rod 18 close to the outer stop bar 501 extends to the outside of the through slot 5023. The end of the pressure rod 18 located outside the through slot 5023 is provided with an inclined extrusion surface 1802.

[0040] Furthermore, a lifting plate 21 is provided between the inner stop bar 502 and the outer stop bar 501. Figures 8-12 As shown, the lifting plate 21 is elastically connected to the bottom plate 5 and the lifting plate 21 can move in the vertical direction relative to the bottom plate 5 (a support spring is fixedly provided between the lifting plate 21 and the bottom plate 5), and the lifting plate 21 can contact the inclined extrusion surface 1802 on the pressure rod 18 during the downward movement, thereby pushing the pressure rod 18; Figure 11-12 As shown, a pressure strip 19 is hinged on the top surface of the lifting plate 21 . The pressure strip 19 can rotate relative to the lifting plate 21 , and in an initial state, the pressure strip 19 is in a vertical state.

[0041] Reference Figure 1-Figure 2 、 Figure 7-Figure 8 As shown, the inner side surface of the inner stop bar 502 is further provided with a notch 5022, which is located at one end of the inner stop bar 502 close to the furnace body 1. Figure 13 As shown, the guide block 601 is elastically connected to a limit block 23 that cooperates with the slot 5022 on one side close to the inner stop bar 502 (a rectangular groove that slides with the limit block 23 is provided on the guide block 601, and a second spring is fixedly arranged between the inner end surface of the rectangular groove and the limit block 23), and one end of the limit block 23 that can be inserted into the slot 5022 is an arc surface 2301. Through this structure, when the pressure between the limit block 23 and the side edge of the slot 5022 increases, the limit block 23 can overcome the elastic force between it and the guide block 601 and move out of the slot 5022.

[0042] In actual use, in order to pull the carrying plate 7 out of the furnace body 1, the present invention hinges a support rod 13 on the push rod 6, the support rod 13 can rotate in the up and down directions relative to the push rod 6, and a hook plate 16 is hinged on the bottom surface of the support rod 13. Figure 3-Figure 4As shown, in the initial state, the hook plate 16 is in a vertical state and can only deflect inward relative to the support rod 13, and a connecting groove 702 that cooperates with the hook plate 16 is provided on the supporting plate 7. When the auxiliary steel cable 12 drives the bottom plate 5 to move to one side of the furnace body 1, the hook plate 16 on the supporting rod 13 can be squeezed and deflected by the supporting plate 7 in the furnace body 1. When the hook plate 16 falls into the connecting groove 702, the support rod 13 can pull the supporting plate 7 out of the furnace body 1 through the cooperation between the hook plate 16 and the connecting groove 702.

[0043] Working principle:

[0044] In the initial state, the guide block 601 is at the notch 5022, and one end of the limit block 23 is inserted into the socket to maintain a stable connection between the guide block 601 and the inner stop bar 502, and the connecting block 15 is at the through groove 5023 in the initial state, so that the inclined surface 1701 on the clamping block 17 can be fully inserted into the through groove 5023, thereby locking the connecting block 15 and the inner stop bar 502. When the carrying plate 7 in the furnace body 1 needs to be taken out, the guide block 601 can be pulled by winding the auxiliary steel cable 12, but the limit block 23 is in the notch 5022. The friction between the bottom plate 5 and the slide rail 3 is not sufficient to cause the limit block 23 to overcome the elastic force between it and the guide block 601 and move out of the notch 5022. Therefore, the pulling force of the auxiliary steel cable 12 can drive the push rod 6 and the bottom plate 5 to move to the side of the furnace body 1. During this process, the hook plate 16 on the support rod 13 is squeezed by the supporting plate 7 in the furnace body 1 and deflected. When the hook plate 16 moves to the connecting groove 702 and deflects downward to a vertical state, the supporting plate 7 in the furnace body 1 can be pulled by the hook plate 16.

[0045] When the auxiliary steel cable 12 is continuously wound, the pulling force exerted by the auxiliary steel cable 12 on the guide block 601 gradually increases the pressure between the limit block 23 and the side edges of the notch 5022, so that the limit block 23 can overcome the elastic force between the limit block 23 and the guide block 601 and move out of the notch 5022, so that the hook plate 16 can pull the carrying plate 7 out of the furnace body 1 and move it to the inner stop bar 502 and the outer stop bar 501 at the top of the bottom plate 5. When the guide block 601 is pulled by the auxiliary steel cable 12 to the vicinity of the reversing shaft 14, it stops moving. At this time, the carrying plate 7 in the furnace body 1 is completely moved above the inner stop bar 502 and the outer stop bar 501.

[0046] Afterwards, the guide block 601 can be pulled away from the furnace body 1 by the main steel cable 11 connected to the guide block 601. Of course, during the process of winding the main steel cable 11, the auxiliary steel cable 12 needs to be in the unwinding state. When the main steel cable 11 pulls the bottom plate 5 to the specified position on the slide rail 3, the crane in the factory is started and the load plate 7 is lifted by the crane.

[0047] In the process of the hook plate 16 pulling the carrying plate 7 out of the furnace body 1, the carrying plate 7 moves in contact with the inner stop bar 502 and the outer stop bar 501. Therefore, the carrying plate 7 will only drive the pressure bar 19 to deflect relative to the lifting plate 21, but the lifting plate 21 is always in a stable state. In the process of the driving crane placing the carrying plate 7 carrying the graphite electrode from top to bottom on the top of the outer stop bar 501 and the inner stop bar 502, the carrying plate 7 will press the pressure bar 19 downward and drive the lifting plate 21 to move downward. According to the above description, the lifting plate 21 will squeeze the pressure rod 18 during the downward movement, thereby pushing the block 17 through the pressure rod 18, so that the block 17 can move a distance in the direction away from the inner stop bar 502, but the inclined surface 1701 on the block 17 will not completely move out of the through groove 5023. Figure 14 As shown, during the process of winding the auxiliary steel cable 12, the friction force between the bottom plate 5 and the slide rail 3 is not enough to enable the clamping block 17 to overcome the elastic force between it and the connecting block 15 and move out of the through groove 5023. Therefore, during the process of winding the auxiliary steel cable 12, the bottom plate 5 can be pulled on the slide rail 3 by the connecting block 15 to slide toward the furnace body 1. When the bottom plate 5 moves to the limit position, the pulling force of the auxiliary steel cable 12 on the reversing shaft 14 can drive the connecting block 15 to move between the two inner stop bars 502 and approach the furnace body 1. Figures 1-4 As shown, a push rod 10 is threadedly connected to the push rod 6. In the process of transporting the supporting plate 7 into the furnace body 1, the staff needs to deflect the support rod 13 upward to separate the hook plate 16 from the connecting groove 702, and one end of the push rod 10 is against the side of the supporting plate 7. In this way, when the bottom plate 5 is pulled to the side of the furnace body 1 by the auxiliary steel cable 12 and the auxiliary steel cable 12 continues to be wound, the pressure between the block 17 and the side edge of the through groove 5023 increases, so that the block 17 can move out of the through groove 5023, so that the guide block 601 and the push rod 6 and other structures can be close to the furnace body 1. In this process, the supporting plate 7 can be pushed into the furnace body 1 through the push rod 10. At this point, the graphite is taken out of the furnace and put into the furnace.

[0048] To sum up, this device can pull the supporting plate 7 out of the furnace body 1 through the cooperation of the hook plate 16 and the connecting groove 702. When the new supporting plate 7 falls onto the inner stop bar 502 and the outer stop bar 501, the reversing assembly can release the locking relationship between it and the inner stop bar 502, thereby changing the pulling direction of the auxiliary steel cable 12 on the guide block 601, so that the auxiliary steel cable 12 can pull the bottom plate 5 gradually closer to the furnace body 1, and push the supporting plate 7 into the furnace body 1 through the top rod 10. There is little manual intervention in the whole process, which makes the process of entering and exiting the furnace safer, and the entire operation is completed only by the cooperation of the main steel cable 11 and the auxiliary steel cable 12, so that the overall structure of the device is simple and easy to maintain.

[0049] like Figure 1As shown, a control cabinet 4 is provided at the end of the slide rail 3 away from the furnace body 1, and two sets of motors (not shown in the figure) are arranged in the control cabinet 4. The two sets of motors are used to reel in the main steel cable 11 and the auxiliary steel cable 12 respectively. Of course, a reel is connected to the output shaft of the motor, and the auxiliary steel cable 12 and the main steel cable 11 are respectively connected to the reels on the two sets of motors. This structure is conducive to driving the base plate 5 to move along the slide rail 3.

[0050] Refer again Figure 1 As shown, sliders 503 that slide with the slide rail 3 are fixedly installed on both sides of the bottom of the base plate 5. Specifically, rollers that cooperate with the slide rail 3 are installed on the slider 503 to reduce the friction between the slider 503 and the slide rail 3.

[0051] A front stopper 302 and a rear stopper 301 are fixed at the top and both ends of the slide rail 3 to limit the moving position of the slider 503. Specifically, when the slider 503 moves to the rear stopper 301, it stops moving. At this time, the hook plate 16 on the support rod 13 can be inserted into the connecting groove 702, thereby pulling the supporting plate 7 in the furnace body 1 to move. The slider 503 can be pressed against the rear stopper 301 to maintain the stability of the bottom plate 5.

[0052] Combine Figure 2 、 Figure 7 As shown, the boss 9 can be fixedly installed on the two side walls inside the furnace body 1, and the top surfaces of the boss 9, the inner baffle 502 and the outer baffle 501 are flush. A positioning groove 901 is provided on the top surface of the boss 9, and a limiting groove 5011 can be provided on the top surface of the outer baffle 501, so that the limiting groove 5011 is aligned with the positioning groove 901. Positioning bars 701 are fixedly installed on both sides of the bottom of the supporting plate 7. When the supporting plate 7 is pulled out of the furnace body 1, the positioning bar 701 can slide from the positioning groove 901 to the limiting groove 5011, thereby improving the stability of the movement of the supporting plate 7.

[0053] Reference Figure 4 As shown, one side of the top of the hook plate 16 extends upward to form a protrusion 1601. When the hook plate 16 is in a vertical state, the top surface of the protrusion 1601 can contact the bottom surface of the support rod 13, so that the hook plate 16 can only deflect inward relative to the support rod 13. A connecting shaft 20 is provided between the hook plate 16 and the support rod 13. The connecting shaft 20 is located on one side of the protrusion 1601, and the connecting shaft 20 is fixedly connected to the hook plate 16 through a fixed block. A convex strip is fixedly provided at the bottom of the support rod 13, so that the connecting shaft 20 passes through the convex strip and is rotatably connected to it, so that the hook plate 16 and the support rod 13 can be rotatably matched. Of course, in actual use, the hook plate 16 and the support rod 13 can also be rotatably matched by hinges or hinges, which will not be elaborated here.

[0054] The push rod 6 is provided with a groove that cooperates with the support rod 13, and the end of the support rod 13 away from the hook plate 16 is rotatably connected to the groove. Through this structure, when the hook plate 16 pulls the supporting plate 7 out of the furnace body 1 and moves it to the specified position, the staff can rotate the support rod 13 upward to separate the hook plate 16 from the connecting groove 702, which is convenient for the crane in the factory to lift the supporting plate 7 (a hook that cooperates with the crane can be fixedly installed on the supporting plate 7).

[0055] Reference Figure 5-Figure 6 As shown, the end of the auxiliary steel cable 12 fixed to the guide block 601 is located on the side of the guide block 601 away from the furnace body 1.

[0056] Reference Figure 8 As shown, the connecting block 15 is provided with a mounting groove that slides with the clamping block 17, and a first spring is fixedly arranged between the inner end face of the mounting groove and the clamping block 17, and the top wall and bottom wall of the inner cavity of the through groove 5023 are provided with strip grooves, and the pressure rod 18 is fixed with a protrusion 1801 that slides with the strip groove, and a limiting spring is fixed between the protrusion 1801 and the end face of the strip groove, and the limiting spring is located on the side of the protrusion 1801 close to the clamping block 17, so as to realize the elastic fit between the pressure rod 18 and the inner stop strip 502.

[0057] Combine Figure 9 、 Figure 11-12 As shown, a base 22 is provided on both the front and rear sides of the pressure strip 19, and the base 22 is fixed to the top surface of the lifting plate 21, and a rotating shaft 1901 that rotates with the base 22 is fixed on the pressure strip 19, and a through circular hole is provided on the base 22 so that the rotating shaft 1901 passes through the circular hole, and an annular groove is provided on the outer peripheral wall of the rotating shaft 1901, and a torsion unit 1902 is sleeved on the annular groove. The torsion unit 1902 can be a torsion spring or a coil spring, and the two ends of the torsion unit 1902 are respectively connected to the rotating shaft 1901 and the base 22, so that in the initial state, the pressure strip 19 can be in a vertical state, and the top end of the pressure strip 19 protrudes from the inner stop bar 502 and the outer stop bar 501, so that when the supporting plate 7 is placed from top to bottom, the pressure strip 19 and the lifting plate 21 can be pressed downward.

Claims

1. A secondary baking device for graphite electrode production, comprising a furnace body and two slide rails disposed on one side of the furnace body, a bottom plate slidably mounted on the slide rails, outer bars fixedly connected to both sides of the top of the bottom plate, inner bars disposed on the inner sides of the outer bars, a supporting plate disposed above the outer and inner bars, and push rods on the tops of the outer and inner bars capable of pushing the supporting plate to move, characterized in that: A guide block is fixedly mounted on the bottom surface of the push rod, and the guide block slides between the two inner stop bars; A secondary steel cable is provided between the two slide rails, a reversing assembly is provided between the two inner stop bars, and the reversing assembly can be engaged with the inner stop bar, one end of the secondary steel cable is fixedly connected to a side of the guide block close to the reversing assembly, and the other end of the secondary steel cable passes around the reversing assembly and extends to the pulley at the end of the slide rail, and finally passes around the pulley and extends in a direction away from the furnace body. When the reversing assembly is disconnected from the inner stop bar, the secondary steel cable pulls the reversing assembly to move synchronously, and the bearing plate can be pushed into the furnace body through the push rod; The reversing assembly includes a reversing shaft arranged between the two inner stop bars, with connecting blocks rotatably installed at both ends of the reversing shaft, the auxiliary steel cable passes around the outside of the reversing shaft, and a clamping block is elastically connected to a side of the connecting block close to the inner stop bar, a through slot is provided on the inner stop bar, and inclined surfaces are provided on both sides of the end of the clamping block close to the inner stop bar, and when the inclined surface is fully inserted into the through slot, the clamping block and the inner stop bar are locked; A pressure rod is elastically connected in the through slot, and an inclined extrusion surface is provided at one end of the pressure rod located outside the through slot. A lifting plate is provided between the inner and outer stop bars, and the lifting plate is elastically connected to the bottom plate. When the lifting plate moves downward, it can contact the inclined extrusion surface on the pressure rod, thereby pushing the pressure rod. A pressure strip is hinged on the top surface of the lifting plate. In the initial state, the pressure strip is in a vertical state. A notch is provided on the inner side surface of the inner stop bar, the notch is located at one end of the inner stop bar close to the furnace body, a side of the guide block close to the inner stop bar is elastically connected to a limit block that matches the notch, and one end of the limit block located inside the notch is an arc surface; The push rod is hinged with a support rod, and the bottom surface of the support rod is rotatably connected to a hook plate. In the initial state, the hook plate is in a vertical state and can only deflect inward relative to the support rod. A connecting groove that matches the hook plate is provided on the bearing plate.

2. The secondary baking device for producing graphite electrodes according to claim 1, characterized in that: The push rod is threadedly connected with a push rod.

3. The secondary baking device for producing graphite electrodes according to claim 1, characterized in that: A front stopper and a rear stopper are respectively fixed on the top of the slide rail and at both ends.

4. The secondary baking device for producing graphite electrodes according to claim 1, characterized in that: One side of the top of the hook plate extends upward to form a convex portion. When the hook plate is in a vertical state, the top surface of the convex portion can contact the bottom surface of the support rod.

5. The secondary baking device for producing graphite electrodes according to claim 1, characterized in that: The push rod is provided with a groove matched with the support rod, and one end of the support rod away from the hook plate is rotatably connected in the groove.

6. A method for performing calcination using the secondary calcination device for producing graphite electrodes according to any one of claims 1 to 5, characterized in that: The method includes the following steps: pulling the bottom plate to one side of the furnace body by the auxiliary steel cable, and when the hook plate cooperates with the connecting groove, the auxiliary steel cable can pull the push rod to move the load-bearing plate out of the furnace body; when the load-bearing plate is placed from top to bottom on the top of the inner and outer baffles, the clamping relationship between the reversing assembly and the inner baffle is released, and when the auxiliary steel cable drives the bottom plate to move to one side of the furnace body, the auxiliary steel cable can drive the reversing assembly to move synchronously, thereby pushing the load-bearing plate into the furnace body.

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