Coke high-temperature calcining and crushing device for preparing isostatic pressing graphite

Abstract

The high-temperature coke calcining and crushing device comprises a calcining furnace, the top of the calcining furnace is open and abuts against a liftable furnace cover, the furnace cover is communicated with a feeding hopper, a double-roller crushing mechanism is installed on the upper portion of the feeding hopper, a jacket is arranged on the outer side of the calcining furnace, and a hollow ball is detachably arranged at the inner bottom of the calcining furnace. A double-shaft-extension motor is arranged in the upper portion of the hollow ball, a driving bevel gear fixedly sleeves an output shaft on the lower side of the double-shaft-extension motor, a rotating shaft is fixedly connected to an output shaft on the upper side of the double-shaft-extension motor, and a plurality of transverse stirring shafts are rotationally arranged in the middle of the hollow ball; one end of the transverse stirring shaft is fixedly sleeved with a driven bevel gear vertically meshed with the driving bevel gear, a plurality of square stirring frames are fixedly connected to the peripheral side of the part located outside the hollow ball, net-shaped stirring pieces are fixedly connected to the inner sides of the square stirring frames, and the top end of the rotating shaft extends out of the hollow ball and is fixedly connected with a square rotating frame. According to the invention, the integration of crushing and calcining can be realized, and the overall processing efficiency and quality are better.

Description

Technical Field

[0001] The invention belongs to the technical field of graphite preparation, and in particular relates to a coke high-temperature calcining and pulverizing device for preparing isostatic graphite. Background Art

[0002] Isostatic graphite is an irreplaceable material for manufacturing single crystal furnaces, metal continuous casting graphite crystallizers, graphite electrodes for EDM, etc. It is also an excellent material for manufacturing rocket nozzles, deceleration materials and reflective materials for graphite reactors. When preparing isostatic graphite, it is usually necessary to first crush the needle-shaped petroleum coke raw materials into small-sized coke powder through a crushing device, and then feed the coke powder to the calcining furnace through a transfer feeding device, and then calcine the corresponding raw materials at a high temperature of 900℃-1100℃ in the calcining furnace. The equipment required is large and the operation is cumbersome, resulting in low overall efficiency. At the same time, the processing quality of conventional crushing and calcining equipment is not ideal, which needs to be solved. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a coke high temperature calcination and crushing device for isostatic graphite preparation, which can realize the integration of crushing and calcining and effectively improve the overall processing efficiency and quality to solve the above problems.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a high-temperature calcination and crushing device for preparing isostatic graphite of coke, comprising a calcining furnace, the top of the calcining furnace is open and abuts against a liftable furnace cover, the center of the furnace cover is connected to a feed hopper, the upper part of the feed hopper is installed with a roller crushing mechanism, the outer side of the calcining furnace is provided with a jacket, the lower part of one side is connected to a discharge pipe with a discharge valve, and the inner bottom is detachably provided with a hollow ball, a plurality of first electric heating plates are evenly distributed on the outer wall of the calcining furnace in the jacket, a double-axis extension motor is fixedly mounted in the upper part of the hollow ball, the two output shafts of the double-axis extension motor are respectively oriented to the upper and lower sides, and the lower output shaft is fixedly sleeved with a driving bevel gear, and the upper output shaft is coaxially fixedly connected with a rotating shaft, a plurality of circumferentially evenly spaced transverse stirring shafts are rotatably provided on the middle part of the hollow ball, and a driven bevel gear vertically meshed with the driving bevel gear is fixedly sleeved on one end of the transverse stirring shaft located in the hollow ball, and a driven bevel gear vertically meshed with the driving bevel gear is fixedly sleeved on the end of the transverse stirring shaft located in the hollow ball, and a rotating shaft is coaxially fixedly connected with the rotating shaft. A plurality of square stirring frames are fixedly connected on the circumference of the part outside the core ball, a mesh stirring piece is fixedly connected on the inner side of the square stirring frame, a hollow ball extends out of the top of the rotating shaft and is fixedly connected to a square rotating frame, a single-axis extension motor is fixedly provided through the center of the upper frame of the rotating frame, the output shaft of the single-axis extension motor faces downward and is fixedly connected to a cross plate, the tail end of the cross plate is hinged with a rotating arm, the bottom end of the rotating arm is fixedly connected to a cross, the central bottom end of the cross is connected to the lower frame of the rotating frame through a universal coupling, the four ends of the cross are fixedly connected to a vertical stirring shaft, a plurality of stirring rods are radially fixedly connected on the circumference of the vertical stirring shaft, a second electric heating plate is fixedly provided on the inner and outer sides of the left and right frames of the rotating frame, a bulking cone is coaxially fixedly connected to the top of the single-axis extension motor, a crushing shaft is coaxially fixedly connected to the top of the bulking cone, the crushing shaft extends into the feed hopper and a plurality of crushing blades are radially fixedly connected on its circumference.

[0005] Preferably, a vertically arranged single-rod hydraulic cylinder is fixedly mounted on both left and right outer sides of the jacket, and the piston rod of the single-rod hydraulic cylinder faces upward and is fixedly connected to the furnace cover.

[0006] Preferably, a mounting block is fixedly connected to the outer bottom of the hollow ball, a support seat is fixedly provided on the inner bottom of the calcining furnace corresponding to the mounting block, a double-rod hydraulic cylinder is fixedly provided in the left-right direction in the lower part of the support seat, and a mounting box is fixedly connected to the upper part, the two piston rods of the double-rod hydraulic cylinder extend out of the support seat and are fixedly connected to a limit frame, the top of the mounting box is open, the mounting block is inserted in the mounting box, and the limit frame is mounted on the outside of the mounting box and the mounting block on the same side.

[0007] Preferably, the mounting block is compatible with the mounting box.

[0008] Preferably, the limiting frame is compatible with the installation box.

[0009] Preferably, the mesh stirring member is formed by crossing a plurality of horizontal bars and a plurality of vertical bars.

[0010] Preferably, the top of the feed hopper is provided with an openable and closable cover.

[0011] The beneficial effects of the present invention are as follows: when the coke raw material is crushed and calcined, the raw material can be directly fed into the feed hopper, the raw material can be directly crushed and processed effectively by the roller crushing mechanism in the feed hopper, and under the guidance of the feed hopper, the crushed raw material can be directly dropped into the calcining furnace for calcination, so that the integration of crushing and calcining can be realized, the overall operation is simpler, thereby better ensuring the overall production efficiency and being more practical; When feeding, start the double-axle extension motor, and the output shaft on the upper side can drive the rotating frame, bulk cone and crushing shaft to rotate as a whole through the rotating shaft, so that the material crushed by the roller crushing mechanism can be crushed again by the multiple crushing blades on the rotating crushing shaft, which can greatly enhance the crushing effect and improve the crushing quality, which is more conducive to the subsequent calcination process. The material crushed by the crushing blades can fall onto the bulk cone under the guidance of the feed hopper. The setting of the rotating bulk cone can evenly distribute the material into the calcining furnace, improve the uniformity of the material feeding, and is more conducive to the calcination process. After the feeding is completed, start the first electric heating plate and the second electric heating plate, and the material can be heated and calcined from the center and periphery of the material at the same time, and the second electric heating plate can rotate synchronously with the rotating frame, which can better ensure the uniformity of heating. With mutual cooperation, it can greatly enhance the heating effect and improve the efficiency and quality of heating and calcination. At the same time, the output shaft on the lower side of the double-axle extension motor cooperates with the corresponding bevel gear transmission to drive the various horizontal stirring shafts on the circumference of the hollow ball to rotate. Through the cooperation of multiple square stirring frames and mesh stirring pieces on the rotating horizontal stirring shafts, efficient and high-quality stirring and mixing of the lower materials can be achieved. The cross on the rotating frame can not only revolve with the rotating frame as a whole, but also can be driven by the single-axle extension motor, plus the cooperation of the cross plate, the rotating arm hinged to the cross plate and the universal coupling, so that the cross itself performs eccentric rotation, so that the cross as a whole is in a continuous cross-swing state, thereby realizing efficient and high-quality stirring and mixing of the upper materials through the cooperation of the four groups of vertical stirring shafts and stirring rods on the revolving and self-swinging crosses. Under mutual cooperation, it can better ensure the comprehensive and effective stirring of the materials, ensure the uniformity of the materials and the uniformity of the heat, thereby greatly enhancing the calcination effect of the materials and improving the efficiency and quality of the calcination. After the calcination is completed, open the discharge valve and discharge the materials through the discharge pipe. In addition, the liftable furnace cover and detachable hollow ball make it easy to disassemble the hollow ball, rotating frame and crushing shaft as a whole for inspection and maintenance when necessary, making the overall use of the device more flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the hollow ball of the present invention; Figure 3 It is a bottom-up structural schematic diagram of the hollow ball of the present invention; Figure 4 It is a schematic diagram of the main structure of the rotating frame of the present invention; Figure 5 It is a schematic diagram of the top view of the rotating frame of the present invention; Figure 6 It is a schematic diagram of the main structure of the support seat of the present invention; Figure 7 2 is a left-view structural schematic diagram of the limit frame of the present invention; Figure 8 It is a schematic diagram of the main structure when the mounting block of the present invention is connected to the mounting box.

[0013] Numbers in the figure: 1 is a calcining furnace, 2 is a furnace cover, 3 is a feed hopper, 4 is a roller crushing mechanism, 5 is a jacket, 6 is a discharge valve, 7 is a discharge pipe, 8 is a hollow ball, 9 is a first electric heating plate, 10 is a double-axis extension motor, 11 is an active bevel gear, 12 is a rotating shaft, 13 is a horizontal stirring shaft, 14 is a driven bevel gear, 15 is a square stirring frame, 16 is a mesh stirring member, 17 is a rotating frame, 18 is a single-axis extension motor, 19 is a horizontal plate, 20 is a rotating arm, 21 is a cross, 22 is a universal coupling, 23 is a vertical stirring shaft, 24 is a stirring rod, 25 is a second electric heating plate, 26 is a bulk cone, 27 is a crushing shaft, 28 is a crushing blade, 29 is a single-rod hydraulic cylinder, 30 is a mounting block, 31 is a support seat, 32 is a double-rod hydraulic cylinder, 33 is a mounting box, 34 is a limit frame, and 35 is a cover plate. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: like Figures 1 to 8As shown, a high-temperature calcination and crushing device for preparing isostatic graphite with coke comprises a calcining furnace 1, the top of the calcining furnace 1 is open and abuts against a liftable furnace cover 2, the center of the furnace cover 2 is connected with a feed hopper 3, and a roller crushing mechanism 4 is installed on the upper part of the feed hopper 3. A jacket 5 is provided on the outer side of the calcining furnace 1, a discharge pipe 7 with a discharge valve 6 is connected to the lower part of one side, and a hollow ball 8 is detachably provided on the inner bottom, a plurality of first electric heating plates 9 are evenly distributed on the outer wall of the calcining furnace 1 in the jacket 5, and a double-axle extension motor 10 is fixedly mounted on the upper part of the hollow ball 8. The two output shafts of the double-extension motor 10 are respectively oriented to the upper and lower sides, and a driving bevel gear 11 is fixedly sleeved on the lower output shaft, and a rotating shaft 12 is coaxially fixedly connected to the upper output shaft. A plurality of circumferentially evenly spaced transverse stirring shafts 13 are rotatably provided on the middle part of the hollow ball 8. A driven bevel gear 14 vertically meshing with the driving bevel gear 11 is fixedly sleeved on one end of the transverse stirring shaft 13 located inside the hollow ball 8, and a plurality of square stirring frames 15 are fixedly connected on the circumferential side of the portion located outside the hollow ball 8, and a mesh stirring member 16 is fixedly connected to the inner side of the square stirring frame 15. The top of the rotating shaft 12 extends out of the hollow ball 8 and is fixedly connected to a square rotating frame 17. A single-axis extension motor 18 is fixedly provided through the center of the upper frame of the rotating frame 17. The output shaft of the single-axis extension motor 18 faces downward and is fixedly connected to a horizontal plate 19. A rotating arm 20 is hinged at the tail end of the horizontal plate 19. A cross 21 is fixedly connected to the bottom end of the rotating arm 20. The center bottom end of the cross 21 is connected to the lower frame of the rotating frame 17 through a universal coupling 22. The four ends of the cross 21 are fixedly connected to a vertical stirring shaft 23, and a plurality of stirring rods 24 are radially fixedly connected to the circumference of the vertical stirring shaft 23. A second electric heating plate 25 is fixedly provided on both the inner and outer sides of the left and right frames of the rotating frame 17. A bulking cone 26 is coaxially fixedly connected to the top of the single-axis extension motor 18. A crushing shaft 27 is coaxially fixedly connected to the top of the bulking cone 26. The crushing shaft 27 extends into the feed hopper 3 and a plurality of crushing blades 28 are radially fixedly connected to the circumference of the crushing shaft 27. When the coke raw material is crushed and calcined, the raw material can be directly fed into the feed hopper 3, and the raw material can be directly crushed and processed effectively by the roller crushing mechanism 4 in the feed hopper 3, and under the guidance of the feed hopper 3, the crushed raw material is directly dropped into the calcining furnace 1 for calcination, which can realize the integration of crushing and calcination, and the overall operation is simpler, thereby ensuring the overall production efficiency and being more practical. The roller crushing mechanism 4 can adopt the existing technology, and its specific structure and working principle will not be described in detail here; When feeding, the double-axle extension motor 10 is started, and the output shaft on the upper side thereof can drive the rotating frame 17, the bulk material cone 26 and the crushing shaft 27 to rotate as a whole through the rotating shaft 12, so that the material crushed by the roller crushing mechanism 4 can be crushed again by the multiple crushing blades 28 on the rotating crushing shaft 27, which can greatly enhance the crushing effect and improve the crushing quality, thus being more conducive to the subsequent calcination process. The material crushed by the crushing blades 28 can fall onto the bulk material cone 26 under the guidance of the feed hopper 3. The setting of the rotating bulk material cone 26 can evenly distribute the material into the calcining furnace 1, improve the uniformity of the material feeding, thus being more conducive to the calcination process. After the feeding is completed, the first electric heating plate 9 and the second electric heating plate 25 are started, and the material can be heated and calcined from the center and the periphery of the material at the same time, and the second electric heating plate 25 can rotate synchronously with the rotating frame 17, which can better ensure the uniformity of heating. Under the cooperation with each other, the heating effect can be greatly enhanced, and the efficiency and quality of heating and calcining can be improved. At the same time, the output shaft on the lower side of the double-axis extension motor 10 cooperates with the corresponding bevel gear transmission to drive the various horizontal stirring shafts 13 on the side of the hollow ball 8 to rotate. Through the cooperation of multiple square stirring frames 15 and mesh stirring members 16 on the rotating horizontal stirring shaft 213, efficient and high-quality stirring and mixing of the lower material can be achieved. The cross 21 on the rotating frame 17 can not only revolve with the rotating frame 17 as a whole, but also can be driven by the single-axis extension motor 18, plus the cooperation of the cross plate 19, the rotating arm 20 hinged to the cross plate 19 and the universal coupling 22, so that the cross 21 itself performs eccentric rotational motion, so that the cross 21 as a whole is in a continuous cross-swing state, thereby through the cooperation of the four groups of vertical stirring shafts 23 and stirring rods 24 on the revolving and self-swinging cross 21, efficient and high-quality stirring and mixing of the upper material can be achieved, and under the cooperation, the comprehensive and effective stirring of the material can be guaranteed, and the uniformity and heating uniformity of the material can be guaranteed, thereby greatly enhancing the calcination effect of the material and improving the efficiency and quality of the calcination. After calcination is completed, the discharge valve 6 is opened to discharge the material through the discharge pipe 7. In addition, the liftable furnace cover 2 and the detachable hollow ball 8 facilitate the overall disassembly of the hollow ball 8, the rotating frame 17 and the crushing shaft 27 for inspection and maintenance when necessary, making the overall use of the device more flexible and convenient.

[0015] In this embodiment, vertically arranged single-rod hydraulic cylinders 29 are fixedly mounted on the left and right outer sides of the jacket 5, and the piston rod of the single-rod hydraulic cylinder 29 faces upward and is fixedly connected to the furnace cover 2, so that in actual use, when necessary, the furnace cover 2 can be moved upward as a whole by extending the piston rod of the single-rod hydraulic cylinder 29, thereby exposing the calcining furnace 1 to facilitate the disassembly, assembly and replacement of components such as the hollow ball 8, and to facilitate the cleaning and maintenance of the interior of the calcining furnace 1.

[0016] In this embodiment, a mounting block 30 is fixedly connected to the outer bottom of the hollow ball 8, and a support seat 31 is fixedly provided on the inner bottom of the calcining furnace 1 corresponding to the mounting block 30. A double-rod hydraulic cylinder 32 is fixedly provided in the left and right directions in the lower part of the support seat 31, and a mounting box 33 is fixedly connected to the upper part. The two piston rods of the double-rod hydraulic cylinder 32 extend out of the support seat 31 and are fixedly connected to a limit frame 34. The top of the mounting box 33 is open, and the mounting block 30 is inserted into the mounting box 33. The limit frame 34 is mounted on the outside of the mounting box 33 and the mounting block 30 on the same side, so that when it is necessary to inspect and replace the hollow ball 8, the rotating frame 17, the crushing shaft 27 and other components, the single-rod hydraulic cylinder 29 can be operated first to extend its piston rod when the calcining furnace 1 is shut down and emptied, so as to drive the furnace cover 2 and the feed hopper 3 to move up to a suitable height as a whole. Then, the double-rod hydraulic cylinder 32 is operated to extend its two piston rods, which can drive the limit frame 34 away from the installation box 33, thereby releasing the set limit of the installation block 30 and the installation box 33, and then the installation block 30 is pulled out, and the corresponding component can be disassembled as a whole, and then the corresponding component can be taken out from the calcining furnace 1. Next, after taking a new component, the installation block 30 on it is first aligned with the installation box 33 and plugged into place, and then the double-rod hydraulic cylinder 32 is operated to shrink its two piston rods, drive the limit frame 34 close to the installation box 33, until the limit frame 34 is in place on the outside of the installation box 33 on the same side, and the installation block 30 can be limited and fixed, thereby completing the fixed installation of the component, and the installation is stable and does not affect the subsequent use. Afterwards, the piston rod of the single-rod hydraulic cylinder 29 is retracted to drive the furnace cover 2 to move down and abut against the calcining furnace 1, and then it can continue to be used. In this way, the hollow ball 8 and other components can be flexibly and conveniently disassembled, assembled and replaced, and the interior of the calcining furnace 1 can be conveniently cleaned and maintained, making the overall use of the device more flexible and convenient.

[0017] In this embodiment, the installation block 30 is matched with the installation box 33 to ensure that the installation block 30 is smoothly plugged and installed in place.

[0018] In this embodiment, the limiting frame 34 is matched with the installation box 33 to ensure that the limiting frame 34 is smoothly inserted into place, and cooperates to achieve the limiting and fixing of the installation block 30.

[0019] In this embodiment, the mesh stirring member 16 is formed by a plurality of cross bars and a plurality of vertical bars intersecting each other to ensure the stirring strength and fluidity of the material, and the stirring effect is better.

[0020] In this embodiment, a cover plate 35 is provided on the top of the feed hopper 3 so that the feed hopper 3 can be closed after the feeding is completed, thereby reducing the heat loss during calcination and being more energy-saving and environmentally friendly.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coke high temperature calcination and crushing device for preparing isostatic graphite, characterized in that: The invention comprises a calcining furnace, wherein the top of the calcining furnace is open and abuts against a liftable furnace cover, the center of the furnace cover is connected to a feed hopper, a double-roll crushing mechanism is installed on the upper part of the feed hopper, a jacket is provided on the outer side of the calcining furnace, a discharge pipe with a discharge valve is connected to the lower part of one side, a hollow ball is detachably provided on the inner bottom, a plurality of first electric heating plates are evenly distributed on the outer side wall of the calcining furnace in the jacket, a double-axis extension motor is fixedly mounted in the upper part of the hollow ball, two output shafts of the double-axis extension motor face the upper and lower sides respectively, and a driving bevel gear is fixedly sleeved on the output shaft on the lower side, and a rotating shaft is coaxially fixedly connected to the output shaft on the upper side, a plurality of circumferentially evenly spaced transverse stirring shafts are rotatably provided on the middle part of the hollow ball, a driven bevel gear vertically meshed with the driving bevel gear is fixedly sleeved on one end of the transverse stirring shaft located in the hollow ball, and a plurality of square stirring shafts are fixedly connected on the circumferential side of the part located outside the hollow ball. The top end of the rotating shaft is coaxially connected to the top of the rotating shaft, and the top end of the rotating shaft is coaxially connected to the bottom end of the rotating shaft, and the bottom end of the rotating shaft is connected to the bottom end of the rotating shaft, and the bottom end of the rotating shaft is connected to the bottom end of the rotating shaft.

2. The coke high temperature calcination and pulverization device for preparing isostatic graphite according to claim 1, characterized in that: A vertically arranged single-rod hydraulic cylinder is fixedly mounted on both left and right outer sides of the jacket, and the piston rod of the single-rod hydraulic cylinder faces upward and is fixedly connected to the furnace cover.

3. The coke high temperature calcination and pulverization device for preparing isostatic graphite according to claim 1, characterized in that: The outer bottom of the hollow ball is fixedly connected with a mounting block, and a support seat is fixedly provided on the inner bottom of the calcining furnace corresponding to the mounting block. A double-rod hydraulic cylinder is fixedly provided in the left-right direction in the lower part of the support seat, and a mounting box is fixedly connected to the upper part. The two piston rods of the double-rod hydraulic cylinder extend out of the support seat and are fixedly connected with a limit frame. The top of the mounting box is open, and the mounting block is inserted in the mounting box, and the limit frame is mounted on the outside of the mounting box and the mounting block on the same side.

4. The coke high temperature calcination and pulverization device for preparing isostatic graphite according to claim 3, characterized in that: The mounting block is matched with the mounting box.

5. The coke high temperature calcination and pulverization device for preparing isostatic graphite according to claim 3, characterized in that: The limiting frame is matched with the installation box.

6. The coke high temperature calcination and pulverization device for preparing isostatic graphite according to claim 1, characterized in that: The mesh stirring member is formed by crossing a plurality of horizontal bars and a plurality of vertical bars.

7. The coke high temperature calcination and pulverization device for preparing isostatic graphite according to claim 1, characterized in that: The top of the feed hopper is provided with an openable and closable cover plate.

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