A preparation method of flexible graphite paper and its expansion equipment

Abstract

The present application discloses a method for preparing flexible graphite paper and its puffing equipment, belonging to the technical field of graphite paper preparation. It comprises: a puffing furnace, used for puffing and separating graphite raw materials, a collecting funnel is fixedly arranged at the bottom of the puffing furnace, a feeding pipe is fixedly arranged on the outside of the puffing furnace, a connecting pipe is fixedly arranged at the bottom of the collecting funnel, the other end of the connecting pipe is tilted downward, a vertical pipe is fixedly arranged at the bottom of the collecting funnel, a plug is slidably arranged on the inside of the vertical pipe, and a discharge hole for connecting the collecting funnel and the connecting pipe is opened on the inside of the plug; the present application adopts a connecting pipe to connect the collecting funnel and the feeding pipe to each other, so that the unexpanded graphite and impurities inside the collecting funnel can be re-transported to the inside of the puffing furnace through the spiral feeder inside the feeding pipe for puffing and separation, so the problem that the unexpanded graphite separated by puffing is inconvenient to take is effectively solved, thereby achieving the effect of facilitating the reuse of the unexpanded graphite.

Description

Technical Field

[0001] The present application relates to the technical field of graphite paper preparation, and more specifically, to a method for preparing flexible graphite paper and a puffing device thereof. Background Art

[0002] In the preparation process of flexible graphite paper, heating the expansion unit is a key step. By controlling the appropriate temperature, the graphite material is expanded. This process is usually carried out in specific equipment, such as an expansion furnace, to ensure that the graphite material is heated evenly to achieve the expansion effect. The purpose of expansion is to increase the surface area of ​​the graphite, thereby improving its physical and chemical properties, such as flexibility, adsorption, etc., to meet the needs of specific applications.

[0003] In the related art, in the process of expanding graphite, in order to make the graphite fully expand by heating, for example, the prior art patent with publication number CN220602156U provides a microwave expansion furnace with a high expansion rate and internal grading. The device integrates the two functions of microwave heating expandable flake graphite and cyclone separation of graphite worms and impurities. When processing graphite worms, the expandable flake graphite is fed into the crucible through a feeding mechanism, and microwaves are emitted into the crucible by a microwave source to heat the expandable flake graphite, thereby producing graphite worms. Air is blown into the crucible through multiple air inlet pipes tangentially arranged on the inner wall of the furnace body to generate vortex flow. The expandable flake graphite is driven by the vortex flow to be evenly heated and expanded more fully during rotation. It will not be unable to be heated well because it is in the center of the graphite powder agglomerate. The graphite worms are separated from impurities and unexpanded graphite by cyclone separation. The heavier impurities and unexpanded graphite fall into the unloading funnel and are regularly discharged through the planetary unloading valve. The lighter graphite worms enter the negative pressure extraction pipe under the negative pressure of the material negative pressure extraction mechanism and are discharged.

[0004] Although the above-mentioned prior art solution can achieve the effect of sufficient expansion and separation by driving the graphite to move in the heated crucible through swirl, the unexpanded graphite will be accumulated inside the discharge funnel along with impurities and needs to be cleaned regularly, resulting in the unexpanded graphite cannot be used in time and it is inconvenient to clean the impurities.

[0005] In view of this, we propose a preparation method of flexible graphite paper and an expansion device thereof. Summary of the invention

[0006] The purpose of the present application is to provide a method for preparing flexible graphite paper and its puffing equipment, which solves the technical problem that the unpuffed graphite separated by puffing is not easy to take and the impurities are not easy to clean, and achieves the technical effect of facilitating the use of unpuffed graphite and cleaning impurities.

[0007] The present application provides a preparation and expansion device for flexible graphite paper, comprising:

[0008] An expansion furnace is used for expanding and separating graphite raw materials. A collecting funnel is fixedly arranged at the bottom of the expansion furnace, a feeding pipe is fixedly arranged at the outside of the expansion furnace, a connecting pipe is fixedly arranged at the bottom of the collecting funnel, and the other end of the connecting pipe is arranged obliquely downward. A vertical pipe is fixedly arranged at the bottom of the collecting funnel, a plug is slidably arranged inside the vertical pipe, and a discharge hole for connecting the collecting funnel and the connecting pipe is opened inside the plug;

[0009] A feeding pipe is fixedly arranged on the outside of the expansion furnace, the bottom of the feeding pipe is fixedly connected to the end of the connecting pipe that is inclined downward, a hopper is fixedly arranged on the outside of the feeding pipe, a spiral feeder is rotatably arranged inside the feeding pipe, and a feeding pipe is fixedly arranged on the outside of the feeding pipe corresponding to the feeding pipe;

[0010] A negative pressure pipe is fixed on the top of the expansion furnace and is used to collect expanded graphite;

[0011] The motor is used to drive the spiral feeder to rotate, and the motor is fixedly arranged on the top of the feeding tube.

[0012] As an optional solution of the technical solution of the present application document, the expansion furnace includes a furnace shell, a crucible is fixedly arranged inside the furnace shell, a microwave source is arranged between the furnace shell and the crucible, a plurality of air ducts are arranged on the outside of the furnace shell along the tangent direction of the crucible, the top of the furnace shell is connected and fixed to the negative pressure pipe through a discharge pipe, and a feeding pipe is fixedly arranged on the outside of the furnace shell through a connecting plate.

[0013] As an optional solution to the technical solution of the present application document, a negative pressure fan is fixedly provided at one end of the negative pressure pipe, a filter box is fixedly provided at the other end of the negative pressure pipe, and a cleaning component is provided at the air outlet end of the negative pressure pipe. The cleaning component is located on the outside of the filter box and is used to clean the air inlet surface of the filter box.

[0014] As an optional solution of the technical solution of the present application document, a corrugated filter plate is fixedly provided on the air inlet side of the filter box; the cleaning component includes an outlet pipe, one end of the outlet pipe is fixedly provided at the air outlet end of the negative pressure fan, a hose is fixedly provided at the other end of the outlet pipe, a nozzle is fixedly provided at the other end of the hose, the nozzle is located on one side of the corrugated filter plate, and the nozzle moves back and forth up and down under the drive of the motor.

[0015] As an optional solution to the technical solution of the present application document, one of the driving ends of the motor is linked to the spiral feeder through a gear box A, and the gear box A is fixedly arranged on the top of the feeding tube. A reciprocating screw is fixedly arranged on the other driving end of the motor, and a sliding sleeve is slidingly arranged on the outside of the reciprocating screw through a threaded groove. A movable plate is fixedly arranged on the outside of the sliding sleeve, and a nozzle is fixedly arranged on the other end of the movable plate. A limiting rod is slidingly arranged on the inside of the movable plate, and the limiting rod is fixedly arranged on the top of the gear box A.

[0016] As an optional solution to the technical solution of the present application document, it also includes a mixing tank, the output end of the mixing tank is tilted downward, a vertical cylinder is fixedly arranged on the top of the mixing tank, a separation pipe is fixedly arranged on the top of the vertical cylinder, the separation pipe is fixedly arranged at the bottom of the negative pressure pipe, a plurality of spray pipes are fixedly arranged on the outside of the separation pipe, a negative pressure fan is fixedly arranged on the outside of the vertical cylinder, the suction end of the negative pressure fan is connected to the negative pressure pipe through the vertical cylinder and the separation pipe, and a stirring assembly is arranged inside the mixing tank.

[0017] As an optional solution of the technical solution of the present application document, the stirring assembly includes a main shaft rotatably installed inside the mixing tank, a stirring plate attached to the inside of the mixing tank is fixedly arranged on the outside of the main shaft, and a pulley B is fixedly arranged at one end of the main shaft, and the pulley B is linked to the gear box A;

[0018] A gear box B is fixedly arranged on the outside of the gear box A, and the gear box A and the gear box B are linked by a connecting shaft. A driving shaft is fixedly arranged on the driving end of the gear box B, and the driving shaft is rotatably arranged on the outside of the mixing tank. A pulley A is fixedly arranged on the other end of the driving shaft, and the pulley A is linked with the pulley B through a belt.

[0019] As an optional solution of the technical solution of the present application document, the stirring assembly also includes a bearing plate rotatably installed on the outside of the main shaft, the bearing plate is rotatably set at one end of the two secondary shafts, and the other ends of the secondary shafts rotate with the mixing tank, and stirring rods are fixedly set on the outsides of the two secondary shafts, and the stirring rods located on the outsides of the two secondary shafts are staggered with each other, and the stirring rods are located between the main shaft and the stirring plate; gears A are fixedly set at one end of the secondary shafts, and the gears A are rotatably set on the outside of the mixing tank, and the two gears A are meshed with each other, one of the gears A is linked with the gear C through the outer gear B, the gear B is rotatably set on the outside of the mixing tank, and the gear C is fixed at the end of the main shaft.

[0020] As an optional solution to the technical solution of the present application document, a discharge port is provided at the output end of the mixing tank, a sealing cover is detachably provided on the outer side of the mixing tank corresponding to the discharge port, the sealing cover is slidably provided on the outer side of the slide rod, the slide rod is fixedly provided on the outer side of the mixing tank, and a unloading assembly for driving the sealing cover to slide is provided at the bottom of the mixing tank, and the unloading assembly synchronously drives the plug to slide to clean and discharge the material.

[0021] As an optional solution of the technical solution of the present application document, the unloading assembly includes an electric push rod fixed to the outside of the mixing tank, a long rod is fixedly provided at the driving end of the electric push rod, the other end of the long rod is fixedly connected to the sealing cover, and a linkage plate is also fixedly provided at the driving end of the electric push rod, a tooth plate A is fixedly provided at the bottom of the linkage plate, a gear D is meshed at the bottom of the tooth plate A, a tooth plate B is meshed on the outside of the gear D, a lifting plate is fixedly provided at the bottom of the tooth plate B, the lifting plate is fixedly provided at the bottom of the plug column, the gear D is rotatably provided inside the protective box, the protective box is fixedly provided on the top of the bottom plate, and the bottom plate is located at the bottom of the puffing furnace, the feeding pipe and the mixing tank.

[0022] The present application also provides a method for preparing flexible graphite paper, using the above-mentioned flexible graphite paper preparation and expansion equipment, comprising the following steps:

[0023] S1. Put the graphite raw material into the hopper, start the motor to drive the spiral feeder to rotate and put the graphite raw material into the expansion furnace for expansion;

[0024] S2, the unexpanded graphite and impurities are separated into the collecting funnel through the expansion furnace, and transported to the internal circulation of the feeding pipe through the connecting pipe and put into the expansion furnace, so that the graphite raw material is fully expanded, and the expanded graphite is sucked and collected through the negative pressure pipe on the top of the expansion furnace;

[0025] S3, spraying the solution onto the collected expanded graphite through a spray pipe, so that the expanded graphite and the solution are mixed and then continued to be stirred and mixed inside the mixing tank, at which time the stirring assembly inside the mixing tank is driven by a motor and runs synchronously with the spiral feeder;

[0026] S4. After the graphite and the solution are mixed and stirred, the discharge port on the outside of the mixing tank is opened by driving the sealing cover through the discharge assembly, so that the graphite is discharged from the inside of the mixing tank for transportation. At the same time, the discharge assembly drives the plug to slide inside the vertical pipe, so that the output end of the discharge hole inside the plug is located outside the vertical pipe to clean up impurities;

[0027] S5, calendering the discharged expanded graphite cloth on a calendering device;

[0028] S6. Drying and collecting the calendered graphite paper.

[0029] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0030] (1) In the present application, a connecting pipe is used to connect the collecting funnel and the feeding pipe, so that the unexpanded graphite and impurities in the collecting funnel can be transported to the inside of the expansion furnace for expansion separation through the spiral feeder in the feeding pipe, thereby effectively solving the problem that the unexpanded graphite separated by expansion is inconvenient to take, thereby achieving the effect of facilitating the reuse of the unexpanded graphite.

[0031] (2) The present application fixes a vertical tube at the bottom of the collecting funnel, and slides a plug inside the vertical tube. The collecting funnel is connected to the connecting pipe through the discharge hole inside the plug, so as to ensure that impurities and unexpanded graphite enter the internal circulation of the feeding pipe. When cleaning the impurities inside the collecting funnel, it is only necessary to slide the plug downward so that the bottom end of the discharge hole is located outside the vertical tube, thereby effectively solving the problem of inconvenience in cleaning impurities.

[0032] (3) The present application arranges a negative pressure fan at one end of the negative pressure pipe so that the negative pressure pipe can suck out the expanded graphite, and a filter box is fixedly arranged at the other end of the negative pressure pipe to ensure air circulation, and a cleaning component is arranged at the output end of the negative pressure fan to clean the air inlet surface of the filter box to ensure the filtering effect of the filter box on the air.

[0033] (4) The present application realizes the feeding function by arranging a motor at the top of the feeding pipe to drive the spiral feeder to rotate. At the same time, the motor drives the nozzle in the cleaning assembly to rise and fall back and forth on the outside of the filter box, so that the nozzle repeatedly blows the air inlet side of the filter box to ensure the comprehensiveness of the blowing.

[0034] (5) The present application sets a mixing tank at the bottom of the negative pressure pipe so that the mixing tank collects the expanded graphite, and after adding the solution, the solution is mixed and stirred by a stirring assembly. The stirring assembly is driven by a motor to continuously expand and stir the graphite raw material for subsequent calendering. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the main structure of a preparation and expansion device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0036] Figure 2 A schematic diagram of the bottom structure of a preparation and expansion device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0037] Figure 3 This is a schematic diagram of the assembly structure of a puffing furnace and a mixing tank in a preparation and puffing device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0038] Figure 4 A schematic diagram of the structure of a puffing furnace in a preparation and puffing device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0039] Figure 5 This is a schematic structural diagram of a feeding pipe in a preparation and expansion device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0040] Figure 6 A schematic diagram of the structure of a cleaning component in a preparation and expansion device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0041] Figure 7 A schematic diagram of one side structure of a mixing tank in a preparation and expansion device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0042] Figure 8 This is a schematic diagram of the structure of the other side of the mixing tank in the preparation and expansion equipment of the flexible graphite paper disclosed in a preferred embodiment of the present application;

[0043] Fig. 9 This is a schematic structural diagram of a stirring assembly in a preparation and expansion device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0044] Fig.10 This is a schematic structural diagram of a discharging assembly in a preparation and expansion device for flexible graphite paper disclosed in a preferred embodiment of the present application;

[0045] Description of the numbers in the figure:

[0046] 1. Expansion furnace; 11. Collecting funnel; 12. Connecting pipe; 13. Feeding pipe; 14. Furnace shell; 15. Crucible; 16. Air duct; 17. Discharging pipe; 18. Connecting plate; 19. Vertical pipe; 110. Plug column; 111. Discharging hole;

[0047] 2. Feeding pipe; 21. Hopper; 22. Screw feeder; 23. Feeding pipe;

[0048] 3. Negative pressure pipe; 31. Negative pressure fan; 32. Filter box; 33. Wave filter plate;

[0049] 4. Cleaning assembly; 41. Exhaust pipe; 42. Hose; 43. Nozzle;

[0050] 5. Motor; 51. Reciprocating screw; 52. Sliding sleeve; 53. Moving plate; 54. Limiting rod; 55. Gear box A; 56. Connecting shaft; 57. Gear box B; 58. Driving shaft; 59. Pulley A;

[0051] 6. Mixing tank; 61. Vertical cylinder; 62. Separation pipe; 63. Spray pipe; 64. Discharge port; 65. Sealing cover; 66. Sliding rod;

[0052] 7. stirring assembly; 71. main shaft; 72. stirring plate; 73. pulley B; 74. belt; 75. bearing plate; 76. secondary shaft; 77. stirring rod; 78. gear A; 79. gear B; 710. gear C;

[0053] 8. Discharging assembly; 81. Electric push rod; 82. Long rod; 83. Linkage plate; 84. Tooth plate A; 85. Gear D; 86. Tooth plate B; 87. Lifting plate; 88. Protective box; 89. Bottom plate. DETAILED DESCRIPTION

[0054] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0055] Reference Figure 1-Figure 6 The present application embodiment discloses a preparation and expansion device for flexible graphite paper, including a puffing furnace 1 for puffing graphite and separating unpuffed graphite, a collecting funnel 11 is fixedly arranged at the bottom of the puffing furnace 1, a feeding pipe 13 is fixedly arranged on the outside of the puffing furnace 1, a connecting pipe 12 is fixedly arranged at the bottom of the collecting funnel 11, and a feeding pipe 2 is fixedly arranged at the other end of the connecting pipe 12 at an angle downward, the feeding pipe 2 is fixedly arranged on the outside of the puffing furnace 1, and a hopper 21 and a feeding pipe 23 are fixedly arranged on the outside of the upper half of the feeding pipe 2, and the feeding pipe 23 is fixedly connected to the feeding pipe 13, and the upper A spiral feeder 22 is rotatably arranged inside the material tube 2, and is used to feed the unexpanded graphite and impurities inside the collecting funnel 11 and the graphite raw material inside the hopper 21 into the inside of the puffing furnace 1. A motor 5 for driving the spiral feeder 22 is fixedly arranged on the top of the feeding tube 2; a vertical pipe 19 is fixedly arranged at the bottom of the collecting funnel 11, and a plug 110 is slidably arranged inside the vertical pipe 19, and a discharge hole 111 for connecting the collecting funnel 11 and the connecting pipe 12 is opened inside the plug 110. A negative pressure pipe 3 is connected and fixed to the top of the puffing furnace 1 for collecting expanded graphite.

[0056] After a certain amount of graphite raw material is placed in the hopper 21, the graphite raw material is transported to the feeding pipe 23 through the spiral feeder 22 in the feeding pipe 2, so that the graphite raw material enters the expansion furnace 1 through the feeding pipe 13 for expansion treatment. After the expanded graphite is separated by cyclone, it is sucked out and collected from the expansion furnace 1 under the action of the negative pressure pipe 3, while the unexpanded graphite and impurities are separated into the collecting funnel 11 and move along the connecting pipe 12 to the bottom of the upper feeding pipe 2, so that the spiral feeder 2 The unexpanded graphite and impurities are lifted upward, and finally re-enter the interior of the expansion furnace 1 through the feed pipe 23 and the feed pipe 13 for expansion separation, so that the unexpanded graphite in the collecting funnel 11 can be used in time, and the remaining impurities will eventually enter the interior of the collecting funnel 11. When the plug 110 in the vertical pipe 19 slides downward so that the output end of the discharge hole 111 is located at the bottom of the vertical pipe 19, the impurities in the collecting funnel 11 can be directly discharged, so as to facilitate the cleaning of the impurities in the collecting funnel 11.

[0057] In order to achieve the effect of expanding and separating the graphite raw material by the expansion furnace 1, refer to Figure 1 and Figure 4 The expansion furnace 1 includes a furnace shell 14, a crucible 15 is fixedly arranged inside the furnace shell 14, a microwave source is arranged between the furnace shell 14 and the crucible 15, a plurality of air ducts 16 are arranged on the outside of the furnace shell 14 along the tangent direction of the crucible 15, the top of the furnace shell 14 is connected and fixed to the negative pressure pipe 3 through a discharge pipe 17, and a feeding pipe 2 is fixedly arranged on the outside of the furnace shell 14 through a connecting plate 18.

[0058] The crucible 15 is ventilated through a plurality of air ducts 16, so that a cyclone is generated inside the crucible 15 to drive the graphite to move, so as to ensure that the graphite is heated evenly during expansion, and the expanded graphite moves upward under the action of the cyclone, and finally enters the negative pressure pipe 3 through the discharge pipe 17 for collection; while the unexpanded graphite and impurities move downward into the collecting funnel 11 for collection, so as to achieve the effect of graphite expansion and separation.

[0059] In order to achieve the collection effect of the negative pressure tube 3 on the expanded graphite, refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 A negative pressure fan 31 is fixedly provided at one end of the negative pressure pipe 3, a filter box 32 is fixedly provided at the other end of the negative pressure pipe 3, a cleaning component 4 is provided at the air outlet end of the negative pressure pipe 3, and the cleaning component 4 is located on the outside of the filter box 32 and is used to clean the air inlet surface of the filter box 32.

[0060] During the puffing process, air is sucked in by the negative pressure fan 31, so that the outside air passes through the filter box 32 for filtering and then enters the inside of the negative pressure pipe 3, so that the negative pressure fan 31 sucks the puffed graphite inside the puffing furnace 1 into the inside of the negative pressure pipe 3, and the air discharged by the negative pressure fan 31 can be purged and cleaned on the air inlet side of the filter box 32 under the action of the cleaning component 4, so as to ensure the filtering effect of the filter box 32 on the air.

[0061] In order to achieve the cleaning effect of the cleaning component 4 on the air intake side of the filter box 32, refer to Figure 6 A corrugated filter plate 33 is fixedly provided on the air inlet side of the filter box 32; the cleaning component 4 includes an air outlet pipe 41, one end of the air outlet pipe 41 is fixedly provided at the air outlet end of the negative pressure fan 31, and a hose 42 is fixedly provided at the other end of the air outlet pipe 41, and a nozzle 43 is fixedly provided at the other end of the hose 42, and the nozzle 43 is located on one side of the corrugated filter plate 33, and the nozzle 43 moves back and forth up and down under the drive of the motor 5.

[0062] When the negative pressure fan 31 is exhausting, the exhausted air enters the interior of the exhaust pipe 41 and is blown out through the nozzle 43 at the other end of the hose 42, so that the nozzle 43 blows and cleans the dust on the outside of the corrugated filter plate 33 and ensures the normal exhaust of the negative pressure fan 31; and the corrugated filter plate 33 is used as the air inlet surface of the filter box 32, which increases the filtering area of ​​the air, and when the nozzle 43 blows on the V-shaped surfaces at different heights, the spacing between the V-shaped surfaces can make the gas blown out by the nozzle 43 more stable, so as to ensure the cleaning effect.

[0063] In order to realize the driving function of the motor 5 to the cleaning component 4, refer to Figure 6 One of the driving ends of the motor 5 is linked to the spiral feeder 22 through the gear box A55, and the gear box A55 is fixedly set on the top of the feeding tube 2. The other driving end of the motor 5 is fixedly set with a reciprocating screw 51, and a sliding sleeve 52 is slidably set on the outside of the reciprocating screw 51 through a threaded groove. A moving plate 53 is fixedly set on the outside of the sliding sleeve 52, and a nozzle 43 is fixedly set on the other end of the moving plate 53. A limiting rod 54 is slidably set on the inside of the moving plate 53, and the limiting rod 54 is fixedly set on the top of the gear box A55.

[0064] When the motor 5 is started, the motor 5 drives the spiral feeder 22 to rotate through the gear box A55 to ensure the feeding function of the feeding tube 2. At the same time, the motor 5 drives the reciprocating screw 51 at the other driving end to rotate, so that the reciprocating screw 51 drives the outer sleeve 52 to drive the moving plate 53 to slide back and forth along the limit rod 54, and then drives the nozzle 43 to reciprocate and rise and fall on the outside of the wave-shaped filter plate 33 through the moving plate 53 to achieve the cleaning effect.

[0065] In order to facilitate the collection and processing of expanded graphite for the preparation of flexible graphite paper, refer to Figure 1-Figure 4, and also includes a mixing tank 6, the output end of the mixing tank 6 is arranged to be inclined downward, a vertical cylinder 61 is fixedly arranged on the top of the mixing tank 6, a separation pipe 62 is fixedly arranged on the top of the vertical cylinder 61, the separation pipe 62 is fixedly arranged at the bottom of the negative pressure pipe 3, a plurality of spray pipes 63 are fixedly arranged on the outside of the separation pipe 62, a negative pressure fan 31 is fixedly arranged on the outside of the vertical cylinder 61, the suction end of the negative pressure fan 31 is connected with the negative pressure pipe 3 through the vertical cylinder 61 and the separation pipe 62, and a stirring assembly 7 is arranged inside the mixing tank 6.

[0066] After the expanded graphite enters the negative pressure pipe 3, it is sucked into the separation pipe 62 under the action of the negative pressure fan 31. When passing through the separation pipe 62, the mixed solution is sprayed out through the spray pipe 63, so that the graphite falls into the mixing tank 6 under a certain humidity environment, preventing the expanded graphite from being sucked out by the negative pressure fan 31, and facilitating the mixing of the expanded graphite and the solution. The mixed expanded graphite is further stirred and mixed under the action of the stirring component 7; during the stirring process, different solutions can be sprayed to the expanded graphite through a plurality of spray pipes 63 to meet the preparation requirements of graphite paper.

[0067] In order to realize the stirring function of the stirring component 7 on the expanded graphite, in order to refer to Figure 2 , Figure 3 , Figure 6 and Fig. 9 The stirring assembly 7 includes a main shaft 71 rotatably mounted inside the mixing tank 6, a stirring plate 72 fixedly arranged outside the main shaft 71 and attached to the inside of the mixing tank 6, a pulley B73 fixedly arranged at one end of the main shaft 71, and the pulley B73 is linked to the gear box A55;

[0068] A gearbox B57 is fixedly arranged on the outside of the gearbox A55, and the gearbox A55 and the gearbox B57 are linked by a connecting shaft 56. A driving shaft 58 is fixedly arranged on the driving end of the gearbox B57, and the driving shaft 58 is rotatably arranged on the outside of the mixing tank 6. A pulley A59 is fixedly arranged on the other end of the driving shaft 58, and the pulley A59 is linked with the pulley B73 through a belt 74.

[0069] When the motor 5 is running, the gear box A55 drives the connecting shaft 56 to rotate, and the connecting shaft 56 drives the driving shaft 58 to rotate through the gear box B57, so that the driving shaft 58 drives the pulley A59 at the other end to rotate, and the pulley A59 drives the pulley B73 to rotate through the belt 74, and then the main shaft 71 drives the outer stirring plate 72 to mix and stir the graphite inside the mixing tank 6.

[0070] In order to ensure the stirring effect of the stirring component 7 on the graphite, refer to Figure 8 and Fig. 9The stirring assembly 7 also includes a bearing plate 75 rotatably mounted on the outside of the main shaft 71, the bearing plate 75 is rotatably set at one end of the two secondary shafts 76, and the other ends of the secondary shafts 76 rotate with the mixing tank 6, and stirring rods 77 are fixedly set on the outside of the two secondary shafts 76, and the stirring rods 77 located on the outsides of the two secondary shafts 76 are staggered with each other, and the stirring rods 77 are located between the main shaft 71 and the stirring plate 72; gears A78 are fixedly set at one end of the secondary shaft 76, and the gears A78 are rotatably set on the outside of the mixing tank 6. The two gears A78 are meshed with each other, and one of the gears A78 is linked with the gear C710 through the outer gear B79, and the gear B79 is rotatably set on the outside of the mixing tank 6, and the gear C710 is fixedly set at the end of the main shaft 71.

[0071] When the main shaft 71 rotates, one of the gears A78 is driven to rotate through the gear B79, so that the gear A78 drives the corresponding secondary shaft 76 to rotate, and at the same time, another secondary shaft 76 is driven to rotate in the opposite direction through another gear A78 on the outside, so that the staggered stirring rods 77 rotate in relative directions to stir the graphite at the bottom of the mixing tank 6, and during the stirring process, the graphite located under the stirring rod 77 is scraped upward by the stirring plate 72, and finally falls on the stirring rod 77 for stirring, so as to ensure the stirring and mixing effect of the stirring component 7 on the graphite.

[0072] In order to facilitate automatic unloading, refer to Figure 1 , Figure 7 and Fig.10 A discharge port 64 is provided at the output end of the mixing tank 6, and a sealing cover 65 is detachably provided on the outer side of the mixing tank 6 corresponding to the discharge port 64. The sealing cover 65 is slidably provided on the outer side of the slide rod 66, and the slide rod 66 is fixedly provided on the outer side of the mixing tank 6. A discharge assembly 8 for driving the sealing cover 65 to slide is provided at the bottom of the mixing tank 6, and the discharge assembly 8 synchronously drives the plug 110 to slide to clean and discharge the material.

[0073] When the graphite expansion and mixing inside the mixing tank 6 is completed, the sealing cover 65 is driven to slide on the outside of the slide rod 66 through the discharge component 8, so that the sealing cover 65 is away from the discharge port 64 to open the output end of the mixing tank 6, so that the graphite mixture inside the mixing tank 6 is discharged along the inclined direction, and the stirring component 7 is used to stir the internal graphite during the discharge process so that the graphite can be fully discharged.

[0074] In order to realize the driving function of the unloading assembly 8 on the sealing cover 65 and the plug 110, refer to Figure 1 , Figure 3 , Figure 5 and Fig.10The unloading assembly 8 includes an electric push rod 81 fixed to the outside of the mixing tank 6, a long rod 82 is fixedly provided at the driving end of the electric push rod 81, and the other end of the long rod 82 is fixedly connected to the sealing cover 65. A linkage plate 83 is also fixedly provided at the driving end of the electric push rod 81, a tooth plate A84 is fixedly provided at the bottom of the linkage plate 83, a gear D85 is meshed at the bottom of the tooth plate A84, a tooth plate B86 is meshed at the outside of the gear D85, a lifting plate 87 is fixedly provided at the bottom of the tooth plate B86, the lifting plate 87 is fixedly provided at the bottom of the plug 110, the gear D85 is rotatably provided inside the protective box 88, the protective box 88 is fixedly provided on the top of the bottom plate 89, and the bottom plate 89 is located at the bottom of the puffing furnace 1, the feeding pipe 2 and the mixing tank 6.

[0075] The electric push rod 81 pushes the long rod 82 to make the sealing cover 65 slide along the sliding rod 66. At the same time, the driving end of the electric push rod 81 drives the tooth plate A84 to slide through the linkage plate 83, so that the tooth plate A84 drives the tooth plate B86 to slide downward synchronously through the gear D85, and then drives the plug column 110 to slide downward on the inside of the vertical tube 19 through the lifting plate 87, so as to automatically clean the impurities inside the collecting funnel 11 when the graphite is unloaded, and when the electric push rod 81 drives the sealing cover 65 to reset, the plug column 110 is synchronously driven to reset to the inside of the vertical tube 19, which is more convenient to use.

[0076] In summary, when the flexible graphite paper preparation and expansion device disclosed in the embodiment of the present application is used, the graphite raw material is put into the hopper 21, and the motor 5 is started to drive the spiral feeder 22 to rotate, so that the spiral feeder 22 transports the graphite raw material in the hopper 21 to the inside of the feed pipe 23, so that the graphite raw material enters the inside of the expansion furnace 1 through the feed pipe 13, and at this time, the inside of the crucible 15 is ventilated through a plurality of air ducts 16, so that a cyclone is generated inside the crucible 15 to drive the graphite to move, so as to ensure that the graphite is heated evenly during expansion, and the expanded graphite moves upward under the action of the cyclone, and finally enters the inside of the negative pressure pipe 3 through the discharge pipe 17 for collection; and the unexpanded graphite The expanded graphite and impurities will move downward into the collecting funnel 11 for collection, and move along the connecting pipe 12 to the bottom of the upper feeding pipe 2, so that the spiral feeder 22 lifts the unexpanded graphite and impurities upward, and finally re-enters the inside of the expanding furnace 1 through the feeding pipe 23 and the feeding pipe 13 for expansion and separation, so that the unexpanded graphite in the collecting funnel 11 can be used in time; at this time, the plug 110 inside the vertical pipe 19 connects the collecting funnel 11 with the connecting pipe 12 through the inner discharge hole 111, and at the same time, during the expansion process, the negative pressure fan 31 sucks air, so that the outside air passes through the filter box 32 and enters the inside of the negative pressure pipe 3, so that The negative pressure fan 31 sucks the expanded graphite in the expansion furnace 1 into the negative pressure pipe 3, and then the expanded graphite is sucked into the separation pipe 62 under the action of the negative pressure fan 31. When passing through the separation pipe 62, the mixed solution is sprayed out through the spray pipe 63, so that the graphite falls into the mixing tank 6 under a certain humidity environment, preventing the expanded graphite from being sucked out by the negative pressure fan 31, and facilitating the mixing of the expanded graphite with the solution; at this time, the motor 5 drives the connecting shaft 56 to rotate through the gear box A55, so that the connecting shaft 56 drives the driving shaft 58 to rotate through the gear box B57, so that the driving shaft 58 drives the pulley A59 at the other end to rotate, so that the pulley A59 drives the pulley B7 through the belt 74. 3 rotates, so that the main shaft 71 drives the outer stirring plate 72 to mix and stir the graphite inside the mixing tank 6, and when the main shaft 71 rotates, one of the gears A78 is driven to rotate through the gear B79, so that the gear A78 drives the corresponding secondary shaft 76 to rotate, and at the same time, another secondary shaft 76 is driven to rotate in the opposite direction through another gear A78 on the outside, so that the staggered stirring rods 77 rotate in the opposite direction to stir the graphite at the bottom of the mixing tank 6, and during the stirring process, the graphite located below the stirring rod 77 is scraped upwards under the action of the stirring plate 72, and finally falls on the stirring rod 77 for stirring, so as to ensure the stirring and mixing effect of the stirring component 7 on the graphite;

[0077] At the same time, when the negative pressure fan 31 is exhausted, the exhausted air enters the interior of the exhaust pipe 41 and is blown out through the nozzle 43 at the other end of the hose 42, so that the nozzle 43 can sweep and clean the dust on the outside of the corrugated filter plate 33, and ensure the normal exhaust of the negative pressure fan 31, and the motor 5 drives the reciprocating screw 51 at the other driving end to rotate, so that the reciprocating screw 51 drives the outer sliding sleeve 52 to drive the moving plate 53 to slide back and forth along the limit rod 54, and then drives the nozzle 43 to reciprocate and rise and fall on the outside of the corrugated filter plate 33 through the moving plate 53 to achieve the cleaning effect;

[0078] After the graphite in the mixing tank 6 is mixed, the electric push rod 81 pushes the long rod 82 to make the sealing cover 65 slide along the sliding rod 66, so that the sealing cover 65 is away from the discharge port 64 to open the output end of the mixing tank 6, so that the graphite mixture in the mixing tank 6 is discharged along the inclined direction, and the stirring component 7 is always used to stir the internal graphite during the discharge process, so that the graphite can be fully discharged; at the same time, the driving end of the electric push rod 81 drives the tooth plate A84 to slide through the linkage plate 83, so that the tooth plate A84 drives the tooth plate B86 to slide downward synchronously through the gear D85, and then drives the plug 110 to slide downward on the inside of the vertical pipe 19 through the lifting plate 87, so that the impurities in the collecting funnel 11 can be automatically cleaned when the graphite is unloaded. After the graphite is unloaded and the impurities are cleaned, the unloading component 8 is reversed to drive the sealing cover 65 and the plug 110 to reset, so that the graphite can be mixed with the solution after expansion to facilitate subsequent calendering operations, and to facilitate the cleaning of impurities in the graphite raw materials.

[0079] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0080] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0081] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0082] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0083] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A preparation and expansion device for flexible graphite paper, characterized in that: Include: A puffing furnace (1) is used for puffing and separating graphite raw materials. A collecting funnel (11) is fixedly arranged at the bottom of the puffing furnace (1), a feeding pipe (13) is fixedly arranged on the outside of the puffing furnace (1), a connecting pipe (12) is fixedly arranged at the bottom of the collecting funnel (11), the other end of the connecting pipe (12) is arranged tilted downward, a vertical pipe (19) is fixedly arranged at the bottom of the collecting funnel (11), a plug (110) is slidably arranged inside the vertical pipe (19), and a discharge hole (111) for connecting the collecting funnel (11) and the connecting pipe (12) is opened inside the plug (110); A feeding pipe (2) is fixedly arranged on the outside of the expansion furnace (1); the bottom of the feeding pipe (2) is fixedly connected to an end of the connecting pipe (12) that is tilted downward; a hopper (21) is fixedly arranged on the outside of the feeding pipe (2); a spiral feeder (22) is rotatably arranged inside the feeding pipe (2); and a feed pipe (23) is fixedly arranged on the outside of the feeding pipe (2) corresponding to the feed pipe (13); A negative pressure pipe (3) is fixedly arranged on the top of the puffing furnace (1) and is used to collect puffed graphite; The motor (5) is used to drive the spiral feeder (22) to rotate, and the motor (5) is fixedly arranged on the top of the feeding tube (2).

2. The preparation and expansion equipment of flexible graphite paper according to claim 1, characterized in that: The expansion furnace (1) comprises a furnace shell (14), a crucible (15) is fixedly arranged inside the furnace shell (14), a microwave source is arranged between the furnace shell (14) and the crucible (15), a plurality of air ducts (16) are arranged on the outside of the furnace shell (14) along the tangent direction of the crucible (15), the top of the furnace shell (14) is connected and fixed to a negative pressure pipe (3) via a discharge pipe (17), and a feeding pipe (2) is fixedly arranged on the outside of the furnace shell (14) via a connecting plate (18).

3. The preparation and expansion equipment of flexible graphite paper according to claim 1, characterized in that: A negative pressure fan (31) is fixedly provided at one end of the negative pressure pipe (3), a filter box (32) is fixedly provided at the other end of the negative pressure pipe (3), and a cleaning component (4) is provided at the air outlet end of the negative pressure pipe (3). The cleaning component (4) is located outside the filter box (32) and is used to clean the air inlet surface of the filter box (32).

4. The preparation and expansion equipment of flexible graphite paper according to claim 3, characterized in that: A wave-shaped filter plate (33) is fixedly provided on the air inlet side of the filter box (32); the cleaning component (4) comprises an air outlet pipe (41), one end of the air outlet pipe (41) is fixedly provided on the air outlet end of the negative pressure fan (31), the other end of the air outlet pipe (41) is fixedly provided with a hose (42), the other end of the hose (42) is fixedly provided with a nozzle (43), the nozzle (43) is located on one side of the wave-shaped filter plate (33), and the nozzle (43) moves up and down reciprocatingly under the drive of the motor (5).

5. The preparation and expansion equipment of flexible graphite paper according to claim 4, characterized in that: One driving end of the motor (5) is linked to the spiral feeder (22) through a gear box A (55), the gear box A (55) is fixedly arranged on the top of the feeding tube (2), and the other driving end of the motor (5) is fixedly arranged with a reciprocating screw (51), a sleeve (52) is slidably arranged on the outer side of the reciprocating screw (51) through a thread groove, a moving plate (53) is fixedly arranged on the outer side of the sleeve (52), a nozzle (43) is fixedly arranged on the other end of the moving plate (53), a limiting rod (54) is slidably arranged on the inner side of the moving plate (53), and the limiting rod (54) is fixedly arranged on the top of the gear box A (55).

6. The preparation and expansion equipment of flexible graphite paper according to claim 5, characterized in that: The invention also comprises a mixing tank (6), wherein the output end of the mixing tank (6) is arranged to be inclined downward, a vertical cylinder (61) is fixedly arranged on the top of the mixing tank (6), a separation pipe (62) is fixedly arranged on the top of the vertical cylinder (61), the separation pipe (62) is fixedly arranged at the bottom of the negative pressure pipe (3), a plurality of spray pipes (63) are fixedly arranged on the outside of the separation pipe (62), a negative pressure fan (31) is fixedly arranged on the outside of the vertical cylinder (61), the suction end of the negative pressure fan (31) is connected to the negative pressure pipe (3) through the vertical cylinder (61) and the separation pipe (62), and a stirring assembly (7) is arranged inside the mixing tank (6).

7. The preparation and expansion equipment of flexible graphite paper according to claim 6, characterized in that: The stirring assembly (7) comprises a main shaft (71) rotatably mounted inside the mixing tank (6), a stirring plate (72) fixedly arranged on the outside of the main shaft (71) and attached to the inside of the mixing tank (6), a pulley B (73) fixedly arranged on one end of the main shaft (71), and the pulley B (73) is linked to a gear box A (55); A gear box B (57) is fixedly arranged outside the gear box A (55), and the gear box A (55) and the gear box B (57) are linked via a connecting shaft (56). A driving shaft (58) is fixedly arranged at the driving end of the gear box B (57), and the driving shaft (58) is rotatably arranged outside the mixing tank (6). A pulley A (59) is fixedly arranged at the other end of the driving shaft (58), and the pulley A (59) is linked with the pulley B (73) via a belt (74).

8. The preparation and expansion equipment of flexible graphite paper according to claim 7, characterized in that: The stirring assembly (7) further comprises a bearing plate (75) rotatably mounted on the outside of the main shaft (71); the bearing plate (75) is rotatably mounted on one end of two secondary shafts (76); the other ends of the secondary shafts (76) rotate with the mixing tank (6); stirring rods (77) are fixedly mounted on the outside of the two secondary shafts (76); the stirring rods (77) located on the outside of the two secondary shafts (76) are staggered with each other; the stirring rods (77) are located between the main shaft (71) and the stirring plate (72); a gear A (78) is fixedly mounted on one end of the secondary shaft (76); the gear A (78) is rotatably mounted on the outside of the mixing tank (6); the two gears A (78) are meshed with each other; one of the gears A (78) is linked to a gear C (710) via an outer gear B (79); the gear B (79) is rotatably mounted on the outside of the mixing tank (6); and the gear C (710) is fixedly mounted on the end of the main shaft (71).

9. The preparation and expansion equipment of flexible graphite paper according to claim 6, characterized in that: The output end of the mixing tank (6) is provided with a discharge port (64), and a sealing cover (65) is detachably provided on the outside of the mixing tank (6) corresponding to the discharge port (64). The sealing cover (65) is slidably provided on the outside of a slide bar (66), and the slide bar (66) is fixedly provided on the outside of the mixing tank (6). A discharge assembly (8) for driving the sealing cover (65) to slide is provided at the bottom of the mixing tank (6), and the discharge assembly (8) synchronously drives a plug rod (110) to slide to clean and discharge materials.

10. The preparation and expansion equipment of flexible graphite paper according to claim 9, characterized in that: The unloading assembly (8) comprises an electric push rod (81) fixed to the outside of the mixing tank (6), a long rod (82) fixedly arranged at the driving end of the electric push rod (81), the other end of the long rod (82) being fixedly connected to the sealing cover (65), a linkage plate (83) fixedly arranged at the driving end of the electric push rod (81), a tooth plate A (84) fixedly arranged at the bottom of the linkage plate (83), and a gear D (85) meshingly arranged at the bottom of the tooth plate A (84). ), a tooth plate B (86) is meshedly arranged on the outer side of the gear D (85), a lifting plate (87) is fixedly arranged at the bottom of the tooth plate B (86), the lifting plate (87) is fixedly arranged at the bottom of the plug (110), the gear D (85) is rotatably arranged inside a protection box (88), the protection box (88) is fixedly arranged on the top of a bottom plate (89), and the bottom plate (89) is located at the bottom of the expansion furnace (1), the feeding pipe (2) and the mixing tank (6).

11. A method for preparing flexible graphite paper, using the preparation and expansion equipment for flexible graphite paper according to any one of claims 1 to 10, characterized in that: The following steps are involved: S1, putting graphite raw materials into the hopper (21), starting the motor (5) to drive the screw feeder (22) to rotate and put the graphite raw materials into the expansion furnace (1) for expansion; S2, the unexpanded graphite and impurities are separated into the collecting funnel (11) through the expansion furnace (1), and are transported to the internal circulation of the feeding pipe (2) through the connecting pipe (12) and put into the expansion furnace (1), so that the graphite raw material is fully expanded, and the expanded graphite is sucked and collected through the negative pressure pipe (3) at the top of the expansion furnace (1); S3, spraying the solution onto the collected expanded graphite through the spray pipe (63), so that the expanded graphite and the solution are mixed and then continue to be stirred and mixed inside the mixing tank (6), at which time the stirring assembly (7) inside the mixing tank (6) is driven by the motor (5) and operates synchronously with the spiral feeder (22); S4, after the graphite and the solution are mixed and stirred, the discharge assembly (8) drives the sealing cover (65) to open the discharge port (64) on the outside of the mixing tank (6), so that the graphite is discharged from the inside of the mixing tank (6) for transportation, and at the same time, the discharge assembly (8) drives the plug (110) to slide on the inside of the vertical pipe (19), so that the output end of the discharge hole (111) on the inside of the plug (110) is located on the outside of the vertical pipe (19) to clean up impurities; S5, calendering the discharged expanded graphite cloth on a calendering device; S6. Drying and collecting the calendered graphite paper.

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