Graphite electrode roasting device based on thermal uniformity effect

Abstract

The invention discloses a graphite electrode roasting device based on a thermal uniformity effect, and relates to the field of graphite electrode processing equipment.The graphite electrode roasting device comprises a roasting furnace, the roasting furnace comprises a furnace shell, a roasting chamber is arranged in the furnace shell, mounting chambers are arranged on the two sides of the roasting chamber, and a fuel gas inlet pipe is communicated with the interior of the roasting chamber; and a controller is fixed on the top surface of the furnace shell. According to the graphite electrode roasting device based on the thermal uniformity effect, a worm, a worm gear and a lead screw can be driven by a second servo motor to rotate together, and then a sliding block and a sliding rod are driven by the lead screw to move in the axial direction of the lead screw; a first trapezoidal block is pushed by a sliding rod, so that a second trapezoidal block and a connecting plate can drive a first placement plate to move upwards under the limitation of a fixing column, and then the graphite electrode is lifted through the first placement plate, so that the bottom of the graphite electrode can be intermittently heated, the graphite electrode cannot be damaged, and the service life of the graphite electrode is prolonged. And all parts of the graphite electrode are uniformly heated.

Description

Technical Field

[0001] The invention relates to the technical field of graphite electrode processing equipment, in particular to a graphite electrode baking device based on a thermal uniformity effect. Background Art

[0002] Graphite electrode is a conductive product made of graphite material, which is widely used in electric arc furnace steelmaking and other high-temperature industrial furnaces. Graphite electrode has excellent conductivity, high temperature resistance and thermal shock resistance, so it is used in electric arc furnace to guide current and generate high temperature to melt metal. Baking graphite electrode is an important step in the production process of graphite electrode, which helps to improve the physical and chemical properties of graphite electrode.

[0003] The roasting device for graphite electrode production disclosed in the patent with authorization announcement CN216745391U is equipped with a rotating motor, a transmission shaft and a belt. The output shaft of the rotating motor drives the transmission shaft to rotate through the belt, thereby driving the graphite electrode placed on the bottom plate to rotate, so that the graphite electrode can be evenly fired. The connecting rod, end plate and heat insulation plate are arranged to prevent the heat in the roasting furnace from overflowing, avoid overheating of the end of the transmission shaft, and ensure normal operation between the transmission shaft and the rotating motor.

[0004] The above-mentioned baking device for graphite electrode production drives the graphite electrode placed on the bottom plate to rotate by rotating the motor, transmission shaft and belt, so that the side and top surfaces of the graphite electrode can be evenly fired, while the bottom of the graphite electrode is always in contact with the bottom plate of the device, so that different parts of the graphite electrode are heated unevenly, which in turn affects the performance and quality of the graphite electrode.

[0005] A roasting device for graphite electrode production disclosed in the patent with authorization announcement CN215572181U intermittently flips the graphite electrode by moving a component so that all parts of the graphite electrode can be evenly roasted. This can avoid excessive roasting of the same part resulting in a decrease in the quality of the graphite electrode, save the time of graphite electrode roasting and improve processing efficiency.

[0006] In actual applications, it was found that the device enables various parts of the graphite electrode to be heated by flipping it, but the graphite electrode is prone to structural deformation at high temperatures. If the graphite electrode is frequently flipped during the roasting process, the stress and deformation risk of the electrode may increase, reducing its service life. At the same time, the fluidity of the airflow in the furnace will also affect the heat transfer. If the airflow in the furnace is uneven and the temperature in the furnace is uneven, the heat transfer efficiency in some areas may be low, which reduces the roasting quality of the graphite electrode. In addition, during the roasting process, residues are likely to appear on the surface of the graphite electrode. If the residues are not cleaned in time, it will affect the roasting effect of the graphite electrode.

[0007] To this end, we provide a graphite electrode baking device based on thermal uniformity effect to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to make up for the deficiencies of the prior art and to provide a graphite electrode baking device based on a thermal uniformity effect, which can make the various parts of the graphite electrode heated evenly, and at the same time increase the fluidity of the airflow in the furnace to make the temperature in the furnace uniform.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: a graphite electrode roasting device based on thermal uniformity effect, comprising a roasting furnace, the roasting furnace comprising a furnace shell, a roasting chamber is arranged inside the furnace shell, installation chambers are arranged on both sides of the roasting chamber, a gas inlet pipe is connected to the roasting chamber, a controller is fixed on the top surface of the furnace shell, an adjustment mechanism for adjusting the position of the graphite electrode is arranged in the roasting chamber and the installation chamber, a circulation mechanism for performing heat circulation is also arranged in the roasting chamber and the installation chamber, a plurality of first servo motors are installed in the installation chamber located on the left side of the roasting chamber, and a guide plate fixed to the output end of the first servo motor is rotatably connected in the roasting chamber; The adjusting mechanism comprises two second servo motors fixed on the side of the installation chamber, the output ends of the two second servo motors are fixed with worm gears, the side of the installation chamber is rotatably connected with a screw rod, the side surfaces of the two screw rods are fixed with worm wheels meshing with the worm gears, the side surfaces of the two screw rods are threadedly matched with sliders, the top surfaces of the two sliders are fixed with sliding rods, and the ends of the two sliding rods close to the worm wheels extend into the roasting chamber, the side of the roasting chamber is fixed with a fixing plate, the top surface of the fixing plate is fixed with a fixing column, the ends of the two sliding rods close to each other are fixed with a first trapezoidal block whose bottom surface is in sliding contact with the fixing plate, the side surface of the fixing column is slidably connected with a connecting plate, and the two ends of the connecting plate are fixed with a second trapezoidal block whose side surface is in sliding contact with the first trapezoidal block, the top surface of the second trapezoidal block is fixed with a first placement plate, and the top surface of the fixing column is fixed with a second placement plate, temperature sensors are installed on the first placement plate and the second placement plate, and heat flow sensors are installed on the sides of the first placement plate and the second placement plate; The circulation mechanism includes an air inlet pipe connecting the roasting chamber and the installation chamber, the output end of the air inlet pipe is connected to a first connecting pipe, the other end of the first connecting pipe is connected to a fan, the output end of the fan is connected to a second connecting pipe, the other end of the second connecting pipe is connected to an air outlet pipe, and the other end of the air outlet pipe is connected to the roasting chamber.

[0010] Furthermore, the output end of the controller is electrically connected to the input end of the fan, the output end of the controller is electrically connected to the input end of the second servo motor, and the top surface of the first placement plate is arc-shaped.

[0011] By adopting the above technical solution, the first placement plate and the second placement plate can be better placed on the graphite electrode.

[0012] Furthermore, the first placement plate and the second placement plate are both provided with evenly distributed second through grooves, and the connecting plate is provided with a first through groove.

[0013] By adopting the above technical solution, the contact area between the graphite electrode and the first placement plate and the second placement plate can be further reduced.

[0014] Furthermore, a mounting plate is fixed to a side of the second trapezoidal block close to the first trapezoidal block, and a roller rotatably connected to the mounting plate and in sliding contact with the first trapezoidal block.

[0015] By adopting the above technical solution, the second trapezoidal block can move on the first trapezoidal block more stably.

[0016] Furthermore, a linear bearing is fixed on the side of the installation chamber, and the linear bearing is slidably connected to the side of the slide rod.

[0017] By adopting the above technical solution, the linear bearing is provided to guide the slide bar, so that the slide bar is more stable.

[0018] Furthermore, the roasting furnace also includes supporting legs fixed to the bottom surface of the furnace shell, the top surface of the furnace shell is hinged with a furnace door, and the bottom surface of the furnace door in a horizontal state is fixed with a heat insulation board, and the heat insulation board is ceramic fiber felt.

[0019] By adopting the above technical solution, the heat insulation effect of the top of the device is improved.

[0020] Furthermore, an igniter is fixed on the gas inlet pipe, and the output end of the controller is electrically connected to the input end of the igniter.

[0021] By adopting the above technical solution, it is convenient to ignite the gas.

[0022] Furthermore, a second thermal insulation layer is fixed in the baking chamber, the second thermal insulation layer is refractory bricks, and a first thermal insulation layer is fixed on the second thermal insulation layer, the first thermal insulation layer is a ceramic coating.

[0023] By adopting the above technical solution, the heat insulation effect inside the device is improved.

[0024] Furthermore, a fixing frame is fixed in the installation chamber, and the fixing frame is fixed to the side surface of the first connecting pipe.

[0025] By adopting the above technical solution, the first connecting pipe can be supported and fixed.

[0026] Furthermore, one end of the air outlet pipe located in the roasting chamber is connected to an air guide pipe, and the opening of the air guide pipe is upward.

[0027] By adopting the above technical solution, the circulation effect is improved.

[0028] Furthermore, two rollers are provided above the second placement plate, and a driving mechanism is connected between both sides of the roller and the second placement plate, and the driving mechanism includes a box body, and a vertically distributed circular shaft 1 and a circular shaft 1 are rotatably installed on the box body, and the end of the circular shaft 1 away from the circular shaft 2 is fixedly connected to the end of the roller, and the ends of the circular shaft 1 and the circular shaft 2 close to each other are respectively fixedly installed with a bevel gear 1 and a bevel gear 2, and the bevel gear 1 and the bevel gear 2 are meshingly connected, and a cylinder is fixedly installed at the bottom end of the circular shaft 2, and a cylinder is sleeved on the cylinder, and a cross plate is fixedly connected to the bottom end of the cylinder, and the cross plate is fixedly connected to the bottom of the second placement plate.

[0029] Furthermore, a plurality of spiral guide ribs distributed in a circular array are fixedly installed on the side surface of the cylinder, a plurality of spiral guide grooves compatible with the plurality of spiral guide ribs are opened on the inner wall of the cylinder, two guide rods are fixedly installed on the bottom of the box body, both guide rods pass through the cross plate and are connected to the cross plate in a damping sliding manner, and a retaining ring is fixedly sleeved on the upper part of the two cross plates, and the retaining ring is located below the cross plate.

[0030] Furthermore, a same horizontal frame is fixedly installed between two adjacent boxes, and a same steel brush is fixedly installed on multiple horizontal frames.

[0031] Compared with the prior art, the graphite electrode baking device based on the thermal uniformity effect has the following beneficial effects: 1. The present invention can drive the worm, worm wheel and lead screw to rotate together through the second servo motor, and then drive the slider and the slide rod to move along the axial direction of the lead screw through the lead screw, and the push of the first trapezoidal block by the slide rod can make the second trapezoidal block and the connecting plate drive the first placement plate to move upward under the limit of the fixed column, and then lift the graphite electrode through the first placement plate, so that the bottom of the graphite electrode can be heated intermittently without causing damage to the graphite electrode, so that all parts of the graphite electrode are heated evenly.

[0032] 2. The present invention can start the fan to draw the airflow at the top of the roasting chamber through the air inlet pipe and the air inlet pipe to the second connecting pipe and the air outlet pipe, and finally discharge it to the bottom of the roasting chamber through the air guide pipe, thereby realizing the airflow circulation in the furnace, improving the fluidity of the airflow in the roasting chamber, making the temperature in the furnace uniform, and improving the heat transfer efficiency, thereby improving the roasting effect of the graphite electrode.

[0033] 2. The present application can prevent the first placement plate and the roller from being in long-term contact with a certain part of the graphite electrode by setting a driving mechanism and a roller, so that the graphite electrode can be fully baked, and the steel brush can be in contact with the rotating graphite electrode during the downward movement of the roller by pressing the graphite electrode, so that the slag generated on the surface of the graphite electrode during baking can be cleared, so that the graphite electrode can be fully baked. Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is an internal cross-sectional view of the furnace shell in the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 It is a cross-sectional view of the interior of the roasting chamber and the installation chamber of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle; Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at C in the middle; Figure 7 For the present invention Figure 4 A magnified schematic diagram of the structure at D in the middle; Figure 8 A cross-sectional view of the internal structure of the furnace shell in the present invention from a side view; Fig. 9 It is a schematic diagram of the local structure of the present invention; Fig.10 is a side sectional view of the driving mechanism of the present invention; Fig.11 It is a schematic diagram of the structure of the cylinder and the barrel in the present invention.

[0035] In the figure: 1. roasting furnace; 101. furnace shell; 102. roasting chamber; 103. installation chamber; 104. support legs; 105. furnace door; 106. heat insulation board; 107. gas inlet pipe; 108. igniter; 109. guide plate; 110. first heat insulation layer; 111. second heat insulation layer; 112. first servo motor; 2. Adjustment mechanism; 201. Second servo motor; 202. Worm; 203. Worm wheel; 204. Lead screw; 205. Slider; 206. Sliding rod; 207. Fixing plate; 208. First trapezoidal block; 209. Fixing column; 210. Connecting plate; 211. Second trapezoidal block; 212. First placement plate; 213. Second placement plate; 214. First through slot; 215. Second through slot; 216. Mounting plate; 217. Roller; 218. Linear bearing; 3. Circulation mechanism; 301. Air inlet pipe; 302. First connecting pipe; 303. Fan; 304. Second connecting pipe; 305. Air outlet pipe; 306. Fixed frame; 307. Air guide pipe; 4. Controller; 5. Temperature sensor; 6. Heat flow sensor; 7. Driving mechanism; 71. Box; 72. Round shaft 1; 73. Round shaft 2; 74. Bevel gear 1; 75. Bevel gear 2; 76. Column; 761. Spiral guide rib; 77. Cylinder; 771. Spiral guide groove; 78. Guide rod; 79. Horizontal plate; 710. Retaining ring; 8. Roller; 9. Horizontal frame; 10. Steel brush. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 11 The present invention provides a technical solution: a graphite electrode roasting device based on thermal uniformity effect, including a roasting furnace 1, the roasting furnace 1 includes a furnace shell 101, a roasting chamber 102 is arranged inside the furnace shell 101, installation chambers 103 are arranged on both sides of the roasting chamber 102, a gas intake pipe 107 is connected to the roasting chamber 102, a controller 4 is fixed to the top surface of the furnace shell 101, the roasting furnace 1 also includes a support leg 104 fixed to the bottom surface of the furnace shell 101, a furnace door 105 is hinged on the top surface of the furnace shell 101, and a heat insulation board 106 is fixed to the bottom surface of the furnace door 105 in a horizontal state.

[0038] By opening the furnace door 105, it is convenient to place the graphite top layer in the roasting chamber 102. The insulation board 106 is ceramic fiber felt, which is a soft insulating material made of ceramic fiber. It has excellent high temperature resistance and heat insulation performance and is suitable for use as an insulation layer in a high temperature environment to improve the insulation effect of the top of the device.

[0039] An igniter 108 is fixed on the above-mentioned gas inlet pipe 107, and two symmetrical guide plates 109 are fixed on the side of the roasting chamber 102. The distance between the two guide plates 109 is small at the upper port and large at the lower port, which can control the direction of the airflow to ensure uniform hot airflow distribution. A second thermal insulation layer 111 is fixed in the roasting chamber 102. The second thermal insulation layer 111 is refractory bricks. Refractory bricks are a kind of ceramic material made by high-temperature sintering, which has good high-temperature resistance and thermal insulation performance. It can effectively isolate high temperature and protect equipment from thermal damage. A first thermal insulation layer 110 is fixed on the second thermal insulation layer 111. The first thermal insulation layer 110 is a ceramic coating, which can provide a surface coating for thermal insulation protection in a high-temperature environment, further improving the thermal insulation effect.

[0040] See also Figure 2-8 An adjusting mechanism 2 for adjusting the position of the graphite electrode is provided in the roasting chamber 102 and the installation chamber 103. The adjusting mechanism 2 includes two second servo motors 201 fixed on the side of the installation chamber 103. The output ends of the two second servo motors 201 are fixed with worms 202. The other end of the worm 202 is rotatably connected to the side of the installation chamber 103 through a bearing and a bearing seat to improve the rotation stability of the worm 202. The side of the installation chamber 103 is rotatably connected with a lead screw 204 through a bearing. Worm wheels 203 meshing with the worm 202 are fixed on the sides of the two lead screws 204. The second servo motor 201 can rotate the worm 202. The rotation of the worm 202 will drive the worm wheel 203 meshing with it to rotate, and then the worm wheel 203 will drive the lead screw 204 to rotate.

[0041] The sides of the two screw rods 204 are threadedly matched with sliders 205, the top surfaces of the two sliders 205 are fixed with sliders 206, the ends of the two sliders 206 close to the worm gear 203 extend into the roasting chamber 102, a fixing plate 207 is fixed to the side of the roasting chamber 102, a fixing column 209 is fixed to the top surface of the fixing plate 207, the ends of the two sliders 206 close to each other are fixed with a first trapezoidal block 208 whose bottom surface is in sliding contact with the fixing plate 207, the sides of the fixing column 209 are slidably connected with a connecting plate 210, and the two ends of the connecting plate 210 are fixed with a second trapezoidal block 211 whose side surface is in sliding contact with the first trapezoidal block 208.

[0042] In the above scheme, the rotation of the screw rod 204 will drive the slider 205 and the slide bar 206 to move along the axial direction of the screw rod 204, and the slide bar 206 will push the first trapezoidal block 208, and the pushed first trapezoidal block 208 will slide on the fixed plate 207. At the same time, the first trapezoidal block 208 can also squeeze the second trapezoidal block 211 through the roller 217, so that the second trapezoidal block 211, the connecting plate 210 and the first placement plate 212 move upward, and the connecting plate 210 will slide on the fixed plate 207. The second trapezoidal block 211 and the connecting plate 210 drive the first placement plate 212 to move upward under the limit of the fixed column 209, and then lift the graphite electrode through the first placement plate 212. The above operation is repeated, so that the bottom of the graphite electrode can be heated intermittently without causing damage to the graphite electrode, so that all parts of the graphite electrode are heated evenly.

[0043] The output end of the controller 4 is electrically connected to the input end of the fan 303, the output end of the controller 4 is electrically connected to the input end of the second servo motor 201, and the output end of the controller 4 is electrically connected to the input end of the igniter 108. The fan 303, the second servo motor 201 and the igniter 108 can be controlled by the controller 4. The top surface of the first placement plate 212 is arc-shaped, which can better fit the graphite electrode.

[0044] The first placement plate 212 and the second placement plate 213 are both provided with uniformly distributed second through grooves 215 to reduce the contact area between the graphite electrode and the first placement plate 212 and facilitate the circulation of hot air in the second placement plate 213. The connecting plate 210 is provided with a first through groove 214 to reduce the influence of the connecting plate 210 on the air flow circulation inside the roasting chamber 102. A mounting plate 216 is fixed to a side of the second trapezoidal block 211 close to the first trapezoidal block 208. A roller 217 that is in sliding contact with the first trapezoidal block 208 is rotatably connected to the mounting plate 216. A linear bearing 218 is fixed to the side of the mounting chamber 103. The linear bearing 218 is slidably connected to the side of the sliding rod 206, so that the second trapezoidal block 211 can move more stably on the first trapezoidal block 208.

[0045] Please refer to Figure 2 , Figure 5 and Figure 7A plurality of first servo motors 112 are installed in the installation chamber 103 located on the left side of the roasting chamber 102, a guide plate 109 fixed to the output end of the first servo motor 112 is rotatably connected in the roasting chamber 102, a first placement plate 212 is fixed to the top surface of the second trapezoidal block 211, a second placement plate 213 is fixed to the top surface of the fixed column 209, temperature sensors 5 are installed on the first placement plate 212 and the second placement plate 213, heat flow sensors 6 are installed on the sides of the first placement plate 212 and the second placement plate 213, the input end of the first servo motor 112 is electrically connected to the output end of the controller 4, and the temperature sensor 5 is electrically connected to the output end of the heat flow sensor 6 and the input end of the controller 4.

[0046] In the above scheme, when the two rollers 8 on the second placement plate 213 are no longer in contact with the graphite electrode, the first placement plate 212 will support the graphite electrode, and the temperature at the second placement plate 213 is not uniform with the temperature at the first placement plate 212. The temperature sensor 5 is set to monitor the temperature of the two rollers 8 on all the first placement plates 212 and the second placement plates 213 in real time. The heat flow sensor 6 is set to monitor the speed and direction of the airflow in real time and collect detailed heat flow data. The temperature and airflow data in the furnace can be collected in real time through the temperature sensor 5 and the heat flow sensor 6. The temperature sensor 5 and the heat flow sensor 6 transmit the data to the controller 4. After being processed by the controller 4, the first servo motor 112 is controlled by the controller 4, and the guide plate 109 is driven to rotate by the first servo motor 112 to adjust the wind direction and guide the hot air to the area with lower temperature. The fan 303 can also be controlled by the controller 4 to adjust the wind speed.

[0047] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 7 A circulation mechanism 3 for performing heat circulation is also provided in the roasting chamber 102 and the installation chamber 103. The circulation mechanism 3 includes an air inlet pipe 301 connecting the roasting chamber 102 and the installation chamber 103. The output end of the air inlet pipe 301 is connected to the first connecting pipe 302. The other end of the first connecting pipe 302 is connected to the fan 303. The output end of the fan 303 is connected to the second connecting pipe 304. The other end of the second connecting pipe 304 is connected to the air outlet pipe 305. The other end of the air outlet pipe 305 is connected to the roasting chamber 102. A fixing frame 306 is fixed in the installation chamber 103. The fixing frame 306 is fixed to the side of the first connecting pipe 302. The setting of the fixing frame 306 can fix the first connecting pipe 302. One end of the air outlet pipe 305 located in the roasting chamber 102 is connected to the air guide pipe 307, and the opening of the air guide pipe 307 is upward.

[0048] Among them, the sides of the air inlet pipe 301, the first connecting pipe 302, the second connecting pipe 304, the air outlet pipe 305, and the air guide pipe 307 are all provided with a thermal insulation coating to further reduce heat loss. The air inlet pipe 301 is arranged at one end in the roasting chamber 102 and has two air inlets. By starting the fan 303, the airflow at the top of the roasting chamber 102 can be drawn into the inside of the fan 303 through the air inlet pipe 301 and the first connecting pipe 302 in turn, and then discharged from the output end of the fan 303. The airflow passes through the second connecting pipe 304, the air outlet pipe 305 and the air guide pipe 307 in turn. The airflow can be discharged upward from the bottom of the roasting chamber 102 through the air guide pipe 307, thereby realizing the airflow circulation in the furnace, improving the fluidity of the airflow in the roasting chamber 102, making the temperature in the furnace uniform, and improving the heat transfer efficiency, thereby improving the roasting effect of the graphite electrode.

[0049] Two rollers 8 are provided above the second placement plate 213, and a driving mechanism 7 is connected between both sides of the roller 8 and the second placement plate 213. The driving mechanism 7 includes a box body 71, and a vertically distributed circular shaft 1 72 and a circular shaft 1 72 are rotatably installed on the box body 71. The end of the circular shaft 1 72 away from the circular shaft 2 73 is fixedly connected to the end of the roller 8, and the ends of the circular shaft 1 72 and the circular shaft 2 73 that are close to each other are respectively fixedly installed with a bevel gear 1 74 and a bevel gear 2 75, and the bevel gear 1 74 and the bevel gear 2 75 are meshingly connected. A cylinder 76 is fixedly installed on the bottom end of the circular shaft 2 73, and a cylinder 77 is sleeved on the cylinder 76. The bottom end of the cylinder 77 is fixedly connected to a horizontal plate 79, and the horizontal plate 79 is fixedly connected to the bottom of the second placement plate 213.

[0050] A plurality of spiral guide ribs 761 distributed in a circular array are fixedly installed on the side of the cylinder 76, and a plurality of spiral guide grooves 771 compatible with the plurality of spiral guide ribs 761 are opened on the inner wall of the cylinder 77. Two guide rods 78 are fixedly installed on the bottom of the box body 71. The two guide rods 78 both penetrate the cross plate 79 and are connected to the cross plate 79 in a damping sliding manner. A retaining ring 710 is fixedly sleeved on the upper part of the two cross plates 79, and the retaining ring 710 is located below the cross plate 79.

[0051] The same cross frame 9 is fixedly installed between two adjacent boxes 71 , and the same steel brush 10 is fixedly installed on the multiple cross frames 9 .

[0052] like Figure 9-11As shown, after the graphite electrode falls on the two rollers 8 on the top of the second placement plate 213, the bottom of the graphite electrode will contact the steel brush 10, and as the first placement plate 212 drives the graphite electrode to move downward, the graphite electrode will press down the roller 8, and the roller 8 will drive the box 71 to move downward during the downward movement, and the downward movement of the box 71 will make the cylinder 76 continue to penetrate into the cylinder 77. During the process, the cooperation of multiple sets of spiral guide ribs 761 and spiral guide grooves 771 will make the cylinder 76 rotate during the downward movement, and the rotating cylinder 76 will drive the bevel gear 2 75 to rotate through the circular shaft 2 73, and the bevel gear 2 75 will drive the circular shaft 1 72 to rotate through the meshing bevel gear 1 74. The circular shaft 72 drives the roller 8 to rotate, and the roller 8 drives the graphite electrode to rotate. The side of the rotating graphite electrode is constantly in contact with the steel brush 10, and the steel brush 10 can remove the residues dropped from the surface of the graphite electrode. Then, when the first placement plate 212 moves up to lift the graphite electrode, as the first placement plate 212 contacts the graphite electrode, the bottom of the guide rod 78 is also flush with the edge of the first through groove 214. Then, when the first placement plate 212 completely lifts the graphite electrode to separate it from the roller 8, the bottom end of the guide rod 78 will penetrate into the first through groove 214, and the bottom of the retaining ring 710 also rests on the top of the connecting plate 210. The side of the roller 8 is provided with a pattern to increase the friction force. As mentioned above, after the graphite electrode is baked on the top of the first placement plate 212 for a period of time, the first placement plate 212 is controlled to rise a distance again. During this process, the connecting plate 210 will push the guide rod 78 up through the push-up ring 710, and the guide rod 78 will push the roller 8 up through the box body 71. When the roller 8 contacts the bottom of the graphite electrode, the above operation can be repeated.

[0053] Since the guide rod 78 and the cross plate 79 are connected by damping sliding, when there is no graphite electrode on the roller 8, the roller 8 will not move downward. Working principle: After placing the graphite electrode on the two rollers 8 on the second placement plate 213, the graphite electrode is started to be roasted, and the fan 303 is started at the same time. The airflow at the top of the roasting chamber 102 can be drawn through the air inlet pipe 301 and the air inlet pipe 301 to the second connecting pipe 304 and the air outlet pipe 305, and finally discharged to the bottom of the roasting chamber 102 through the air guide pipe 307, so as to realize the airflow circulation in the furnace, improve the fluidity of the airflow in the roasting chamber 102, and make the temperature in the furnace uniform; Then starting the second servo motor 201 can drive the worm 202, the worm wheel 203, and the lead screw 204 to rotate together, and then the lead screw 204 drives the slider 205 and the slide rod 206 to move along the axial direction of the lead screw 204, and the slide rod 206 pushes the first trapezoidal block 208, which can make the second trapezoidal block 211 and the connecting plate 210 drive the first placement plate 212 to move upward under the limit of the fixed column 209, and then lift the graphite electrode through the first placement plate 212, and repeat the above operation, so that the bottom of the graphite electrode can be heated intermittently without causing damage to the graphite electrode, so that all parts of the graphite electrode are heated evenly.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A graphite electrode roasting device based on a heat uniformity effect, comprising a roasting furnace (1), the roasting furnace (1) comprising a furnace shell (101), a roasting chamber (102) being arranged inside the furnace shell (101), installation chambers (103) being arranged on both sides of the roasting chamber (102), a gas inlet pipe (107) being connected inside the roasting chamber (102), a controller (4) being fixed on the top surface of the furnace shell (101), characterized in that: The baking chamber (102) and the installation chamber (103) are provided with an adjustment mechanism (2) for adjusting the position of the graphite electrode, and the baking chamber (102) and the installation chamber (103) are also provided with a circulation mechanism (3) for performing a thermal cycle. A plurality of first servo motors (112) are installed in the installation chamber (103) located on the left side of the baking chamber (102), and a guide plate (109) fixed to the output end of the first servo motor (112) is rotatably connected in the baking chamber (102); The adjustment mechanism (2) comprises two second servo motors (201) fixed to the side of the installation chamber (103); the output ends of the two second servo motors (201) are both fixed with worms (202); the side of the installation chamber (103) is rotatably connected to a lead screw (204) via a bearing; the side of the two lead screws (204) is both fixed with a worm wheel (203) meshing with the worm (202); the side of the two lead screws (204) is both threadedly fitted with a slider (205); the top surfaces of the two sliders (205) are both fixed with a slide bar (206); one end of the two slide bars (206) close to the worm wheel (203) extends into the roasting chamber (102); a fixing plate (207) is fixed to the side of the roasting chamber (102); the top surface of the fixing plate (207) A fixed column (209) is fixed, and the ends of the two sliding rods (206) close to each other are both fixed with a first trapezoidal block (208) whose bottom surface is in sliding contact with the fixed plate (207), the side of the fixed column (209) is slidably connected to a connecting plate (210), and both ends of the connecting plate (210) are fixed with a second trapezoidal block (211) whose side surface is in sliding contact with the first trapezoidal block (208), the top surface of the second trapezoidal block (211) is fixed with a first placement plate (212), and the top surface of the fixed column (209) is fixed with a second placement plate (213), and the first placement plate (212) and the second placement plate (213) are both installed with temperature sensors (5), and the sides of the first placement plate (212) and the second placement plate (213) are both installed with heat flow sensors (6); The circulation mechanism (3) comprises an air inlet pipe (301) connected to the roasting chamber (102) and the installation chamber (103); the output end of the air inlet pipe (301) is connected to a first connecting pipe (302); the other end of the first connecting pipe (302) is connected to a fan (303); the output end of the fan (303) is connected to a second connecting pipe (304); the other end of the second connecting pipe (304) is connected to an air outlet pipe (305); the other end of the air outlet pipe (305) is connected to the roasting chamber (102).

2. The graphite electrode baking device based on heat uniformity effect according to claim 1 is characterized in that: The output end of the controller (4) is electrically connected to the input end of the fan (303), the output end of the controller (4) is electrically connected to the input end of the second servo motor (201), and the top surface of the first placement plate (212) is arc-shaped.

3. The graphite electrode baking device based on heat uniformity effect according to claim 2 is characterized in that: The first placement plate (212) and the second placement plate (213) are both provided with evenly distributed second through slots (215), and the connection plate (210) is provided with a first through slot (214).

4. The graphite electrode baking device based on heat uniformity effect according to claim 1, characterized in that: A mounting plate (216) is fixed to a side surface of the second trapezoidal block (211) close to the first trapezoidal block (208); a roller (217) is rotatably connected to the mounting plate (216) and is in sliding contact with the first trapezoidal block (208).

5. The graphite electrode baking device based on heat uniformity effect according to claim 1, characterized in that: A linear bearing (218) is fixed to the side of the installation chamber (103), and the linear bearing (218) is slidably connected to the side of the slide rod (206).

6. The graphite electrode baking device based on heat uniformity effect according to claim 1, characterized in that: The roasting furnace (1) further comprises support legs (104) fixed to the bottom surface of the furnace shell (101); a furnace door (105) is hingedly connected to the top surface of the furnace shell (101); a heat insulation board (106) is fixed to the bottom surface of the furnace door (105) in a horizontal state; the heat insulation board (106) is a ceramic fiber felt.

7. The graphite electrode baking device based on heat uniformity effect according to claim 1, characterized in that: An igniter (108) is fixed on the gas inlet pipe (107), and an output end of the controller (4) is electrically connected to an input end of the igniter (108); A second heat insulation layer (111) is fixed in the firing chamber (102), the second heat insulation layer (111) is a refractory brick, a first heat insulation layer (110) is fixed on the second heat insulation layer (111), the first heat insulation layer (110) is a ceramic coating; A fixing frame (306) is fixed in the installation chamber (103), and the fixing frame (306) is fixed to a side surface of the first connecting pipe (302); One end of the air outlet pipe (305) located in the roasting chamber (102) is connected to an air guide pipe (307), and the opening of the air guide pipe (307) faces upward.

8. The graphite electrode baking device based on heat uniformity effect according to claim 1, characterized in that: Two rollers (8) are provided above the second placement plate (213), and a driving mechanism (7) is connected between the two sides of the rollers (8) and the second placement plate (213), and the driving mechanism (7) comprises a box (71), and a vertically distributed circular shaft (72) and a circular shaft (72) are rotatably installed through the box (71), and one end of the circular shaft (72) away from the circular shaft (73) is fixedly connected to the end of the roller (8), and the circular shaft (72) is fixedly connected to the end of the roller (8). ) and the end of the circular shaft 2 (73) close to each other are respectively fixedly mounted with a bevel gear 1 (74) and a bevel gear 2 (75), the bevel gear 1 (74) and the bevel gear 2 (75) are meshingly connected, a cylinder (76) is fixedly mounted on the bottom end of the circular shaft 2 (73), a cylinder (77) is sleeved on the cylinder (76), a transverse plate (79) is fixedly connected to the bottom end of the cylinder (77), and the transverse plate (79) is fixedly connected to the bottom of the second placement plate (213).

9. The graphite electrode baking device based on heat uniformity effect according to claim 8, characterized in that: A plurality of spiral guide ribs (761) distributed in a circumferential array are fixedly mounted on the side of the cylinder (76); a plurality of spiral guide grooves (771) adapted to the plurality of spiral guide ribs (761) are opened on the inner wall of the cylinder (77); two guide rods (78) are fixedly mounted on the bottom of the box body (71); the two guide rods (78) both penetrate the horizontal plate (79) and are connected to the horizontal plate (79) in a damping sliding manner; and retaining rings (710) are fixedly sleeved on the upper parts of the two horizontal plates (79); the retaining rings (710) are located below the horizontal plate (79).

10. The graphite electrode baking device based on heat uniformity effect according to claim 8, characterized in that: The same cross frame (9) is fixedly mounted between two adjacent boxes (71), and the same steel brush (10) is fixedly mounted on the plurality of cross frames (9).

Images