High-purity graphite preparation device, preparation method and its loading mechanism and negative pressure mechanism

Abstract

The invention discloses a high-purity graphite preparation device, a preparation method and a loading mechanism and a negative pressure mechanism thereof, and belongs to the technical field of graphite preparation; the preparation device comprises: a support frame, a cabinet, a cabinet door, a handle, a door lock, a hinge, a cylinder, a fixing frame, a first connecting pipe, a second connecting pipe, a pressure gauge, a screw, a guide rod, a pressure plate, a connecting rod, a connecting block, a control cabinet, a piston plate, a sliding block, a sealing pressure pad, a guide hole, a rotating screw hole seat, a worm wheel, a worm, a fixing plate, a servo motor, a movable cylinder, a first bevel gear, a metal jacket, a heat insulation layer, an end block, a heating wire, a rubber sealing pad, a cylinder, a rack, an arc-shaped slide groove, an arc-shaped baffle plate, a connecting strip and a rotating strip; the preparation method comprises graphite molding, graphite placement, vacuum heating and graphite removal; the invention provides lateral drive by arranging an movable cylinder, and the loading mechanism is arranged, so that graphite can be easily taken in and out, and graphite can be easily taken in and out, so that raw materials can be easily replaced during processing, and the graphite preparation efficiency is improved.

Description

Technical Field

[0001] The invention discloses a high-purity graphite preparation device, a preparation method and a material loading mechanism and a negative pressure mechanism thereof, belonging to the technical field of graphite preparation. Background Art

[0002] Graphite is a high-energy crystalline carbon material. Due to its unique structure and electrical conductivity, thermal conductivity, lubrication, high temperature resistance, stable chemical properties, etc., it has high application value in high-performance materials. It is widely used in metallurgy, machinery, environmental protection, chemical industry, refractory, electronics, medicine, military industry, aerospace and other fields, and has become an indispensable non-metallic material for the development of modern industry and high, new and cutting-edge technology. With the continuous development of technology, ordinary high-carbon graphite products can no longer meet the requirements of the industry, and it is necessary to further improve the purity of graphite and remove impurities in graphite.

[0003] Graphite purification includes flotation method, alkaline acid method, hydrofluoric acid method, chlorination roasting method and high-temperature purification method; among them, the high-temperature purification method utilizes the physical property that the melting and boiling points of graphite are much higher than the melting and boiling points of impurity silicates. Graphite powder mixed with impurities is loaded into a graphite crucible, and heated to the melting and boiling points of the impurities in a purification furnace with inert gas and Freon protective gas. The impurities in the graphite will overflow, thereby achieving the purification of the graphite. This method can purify the graphite to 99.99%. Therefore, for situations where the purity of graphite is extremely high, the high-temperature purification method is used.

[0004] At present, the equipment and process of high-temperature purification method are still being improved. On the one hand, the graphite purity is higher by improving the process, and on the other hand, the high-temperature vacuum furnace is improved to make the operation more convenient. The existing high-temperature vacuum furnace is not easy to put in the graphite raw materials and take out after purification, and it is not easy to load and unload materials, resulting in low purification efficiency. Since these technical improvements do not improve the purity of graphite from the process, few people pay attention to them. Therefore, the corresponding improvement plan is still blank in this field. Summary of the invention

[0005] In order to address the deficiencies in the prior art, the present application provides a high-purity graphite preparation device, preparation method, and loading mechanism and negative pressure mechanism thereof. By providing a movable cylinder to provide lateral drive and the setting of a loading mechanism, it is convenient to take and place graphite, thereby facilitating the replacement of raw materials during processing, thereby improving the preparation efficiency of high-purity graphite.

[0006] The object of the present invention is achieved in that:

[0007] A high-purity graphite preparation device, comprising: a support frame, a cabinet, a cabinet door, a door lock, a metal jacket, a rubber sealing pad, a heating wire, a movable cylinder, a connecting block, a loading mechanism and a negative pressure mechanism;

[0008] The cabinet is fixedly installed on the top of the support frame, the cabinet door is installed at the front opening of the cabinet through a hinge, the door lock is installed between one side of the cabinet door and the cabinet, the metal jacket is fixedly installed on the inner wall of the cabinet and the back of the cabinet door, the interior of the metal jacket is fixedly filled with a heat insulation layer, and the rubber sealing gasket is fixedly bonded to the metal jacket on the cabinet door; an insulating end block is fixedly installed on the metal jacket inside the cabinet, the heating wire is fixedly installed on the end block, and a handle is fixedly installed on the cabinet door;

[0009] The movable cylinder is fixedly mounted on the back of the cabinet, the connecting block is fixedly mounted on the output shaft end of the movable cylinder, and the connecting block is connected to a plurality of evenly distributed loading mechanisms for placing graphite raw materials;

[0010] A plurality of evenly distributed through holes are opened on one side of the cabinet, the through holes pass through the metal jacket and the heat insulation layer, the loading mechanism passes through the through holes, and the loading mechanism is located inside the cabinet;

[0011] The negative pressure mechanism is arranged on one side of the cabinet, and the output end of the negative pressure mechanism is connected to the top of the cabinet; a temperature sensor is arranged inside the cabinet;

[0012] The material loading mechanism comprises: a first bevel gear, a cylinder, a rack, a rotating bar, a pushing bar, a first rotating shaft, a cylindrical gear, a second rotating shaft, a third rotating shaft and a second bevel gear;

[0013] The negative pressure mechanism comprises: a cylinder, a fixing frame, a first connecting pipe, a second connecting pipe, a pressure gauge, a piston disc, a screw, a guide rod, a rotating screw hole seat, a worm wheel, a worm, a fixing plate and a servo motor.

[0014] The loading mechanism of the high-purity graphite preparation device comprises: a first bevel gear, a cylinder, a rack, a rotating bar, a pushing bar, a first rotating shaft, a cylindrical gear, a second rotating shaft, a third rotating shaft and a second bevel gear;

[0015] A pressure plate is rotatably mounted at one end of the cylinder, a sealing pressure pad is fixedly bonded to a plate surface of the pressure plate close to the cylinder, a shaft damper is provided at the connection between the pressure plate and the cylinder, a plurality of chambers are provided inside the cylinder along the length direction, the openings of the plurality of chambers are covered with an arc-shaped shielding plate, a slider is fixedly mounted on the plate surface of the arc-shaped shielding plate, an arc-shaped slide groove is provided on the outer wall of the cylinder, the slider is slidably mounted inside the arc-shaped slide groove, and a connecting strip is fixedly mounted between two adjacent arc-shaped shielding plates;

[0016] A plurality of connecting rods are fixedly installed between the pressure plates at one end of the plurality of material loading mechanisms, wherein a pressure plate on one of the material loading mechanisms is fixedly connected to one end of the connecting block, and the diameter of the pressure plate is larger than the aperture of the through hole;

[0017] The first gear is connected with the drive gear of the driving mechanism, and the driving mechanism is connected with the transmission gear of the driving mechanism, and the transmission gear is connected with the transmission gear of the driving mechanism.

[0018] An inner groove is provided inside the rack along the length direction, and a positioning rod is connected to the inner groove with clearance fit, and the positioning rod is fixedly installed inside the end groove;

[0019] A spring is sleeved on the positioning rod; one end of the spring is fixedly connected to one end of the rack, and the other end of the spring is fixedly connected to the groove wall of the end groove.

[0020] A negative pressure mechanism of a high-purity graphite preparation device comprises: a cylinder, a fixing frame, a first connecting pipe, a second connecting pipe, a pressure gauge, a piston disc, a screw, a guide rod, a rotating screw hole seat, a worm wheel, a worm, a fixing plate and a servo motor;

[0021] A plurality of fixing frames are fixedly installed on the outer cylinder wall of the cylinder, one side end of the fixing frame is fixedly installed with one side outer wall of the cabinet, the top of the cylinder is fixedly connected with the first connecting pipe, the end of the first connecting pipe is connected with one end of the pressure gauge, the other end of the pressure surface is connected with one end of the second connecting pipe, the end of the second connecting pipe is fixedly connected with the top of the cabinet, and the second connecting pipe is connected with the inside of the cabinet; the inside of the cylinder is matched with the piston disc, the bottom of the piston disc is fixedly installed with the screw and the guide rod, the guide rod is gap-matchedly connected with the guide hole opened at the bottom of the cylinder, and the screw is threadedly connected with the screw hole in the middle of the rotating screw hole seat;

[0022] The top of the rotating screw hole seat is rotatably mounted at the bottom center of the cylinder, a plurality of balls are arranged at the connection between the rotating screw hole seat and the cylinder, the bottom of the rotating screw hole seat is fixedly sleeved with the worm wheel, the worm wheel is meshedly connected with the worm, the number of the fixed plates is two, both of the two fixed plates are fixedly mounted at the bottom of the cylinder, the worm is rotatably mounted between the two fixed plates, the output shaft end of the servo motor is fixedly connected to one end of the worm, and the servo motor is fixedly mounted at the bottom of the cylinder;

[0023] A control cabinet is fixedly installed on one side of the cylinder, and the control cabinet is electrically connected with the servo motor, the movable cylinder, the heating wire and the temperature sensor.

[0024] A method for preparing high-purity graphite comprises the following steps:

[0025] Step a: Graphite forming

[0026] The raw graphite powder is molded into spheres or blocks and then dried;

[0027] Step b: Put graphite into

[0028] The cabinet door is closed and the door lock is locked. The closure is provided by compressing the rubber sealing gasket, and then the movable cylinder is extended to drive the loading mechanism to move to the outside of the cabinet, and then the push bar is pushed to move the rack, and the rack slides with the positioning rod, and at the same time, the spring is compressed, and the rack is meshed with the cylindrical gear to rotate the first rotating shaft, and the second rotating shaft is rotated through the meshing between the two first bevel gears, and the third rotating shaft is further rotated through the meshing of the two second bevel gears, and the arc-shaped baffle plate is further driven to rotate together through the rotating bar. Since multiple arc-shaped baffle plates are connected by connecting strips, multiple arc-shaped baffle plates rotate together, and the slider slides in the slide groove to open all the chambers, and then the raw materials are put into the chambers, and then the push bar is released, and the rack is reset through the elastic force of the spring, so that the arc-shaped baffle plate covers the chamber again to achieve closure;

[0029] Step c: vacuum heating

[0030] The movable cylinder contracts, causing the loading mechanism to enter the cabinet until the sealing pad on the pressure plate is pressed against the outer wall of one side of the cabinet to close the through hole. After the loading mechanism enters the cabinet, the push strip is squeezed through the metal jacket inside the cabinet to open the chamber, and then the heating wire is heated. The worm is driven to rotate by the servo motor, and the rotating screw hole seat is rotated through the meshing between the worm and the worm wheel, driving the screw, and cooperating with the guiding effect between the guide rod and the guide hole to realize the movement of the piston disc in the cylinder, thereby realizing air extraction. The air in the cabinet enters the cylinder through the second connecting pipe, the pressure gauge, and the first connecting pipe, thereby evacuating the cabinet to realize vacuum heating and graphite purification.

[0031] Step d: Graphite removal

[0032] Driven by a servo motor, the air pressure in the cabinet is restored to atmospheric pressure, and then the movable cylinder is extended to move the loading mechanism to the outside of the cabinet. The cylinder is then rotated to rotate the cylinder and the pressure plate so that the chamber opening faces downward, and then the push bar is pushed to move the rack, thereby moving the arc-shaped baffle to open the opening of the chamber and take out the purified graphite.

[0033] Beneficial effects:

[0034] First, the high-purity graphite preparation device and preparation method of the present invention provide a device and method for graphite purification by vacuum heating. Compared with the prior art, the movable cylinder is provided to provide lateral drive, and the loading mechanism is provided to facilitate the taking and placing of graphite, thereby facilitating the replacement of raw materials during processing, and improving the preparation efficiency of high-purity graphite;

[0035] Second, the high-purity graphite preparation device of the present invention is provided with a loading mechanism with an opening and closing setting. After the graphite raw material is placed, the chamber can be closed. When the chamber opening faces downward, the chamber is manually opened to allow the graphite to fall out, which is convenient for removal after processing. When vacuum heating is performed, the loading mechanism is allowed to enter the cabinet, and the chamber is automatically opened by squeezing the push bar, thereby facilitating heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the high-purity graphite preparation device of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure inside the cylinder;

[0038] Figure 3 It is a schematic diagram of the structure of the bottom of the cylinder;

[0039] Figure 4 It is a schematic diagram of the structure inside the cabinet;

[0040] Figure 5 Schematic diagram of the external structure of the loading mechanism;

[0041] Figure 6 It is a schematic diagram of the structure at one end of the cylinder;

[0042] Figure 7 is a schematic diagram of the connection structure between the first rotating shaft and the second rotating shaft;

[0043] Figure 8 yes Figure 2 The enlarged structural diagram of the middle A part;

[0044] Fig. 9It is a schematic diagram of the connection structure between the arc-shaped shielding plate and the cylinder;

[0045] Fig.10 It is a schematic flow diagram of the method for preparing high-purity graphite of the present invention.

[0046] In the figure: 1, support frame; 2, cabinet; 3, cabinet door; 4, handle; 5, door lock; 6, hinge; 7, cylinder; 8, fixed frame; 9, first connecting pipe; 10, second connecting pipe; 11, pressure gauge; 12, screw; 13, guide rod; 14, pressure plate; 15, connecting rod; 16, connecting block; 17, control cabinet; 18, piston plate; 19, slider; 20, sealing pressure pad; 21, guide hole; 22, rotating screw hole seat; 23, worm gear; 24, worm; 25, fixed plate; 26, servo motor; 2 7. Movable cylinder; 28. First bevel gear; 29. ​​Metal jacket; 30. Heat insulation layer; 31. End block; 32. Heating wire; 33. Rubber sealing pad; 34. Cylinder; 35. Rack; 36. Arc slide groove; 37. Arc shielding plate; 38. Connecting strip; 39. Rotating strip; 40. Push strip; 41. Inner groove; 42. Positioning rod; 43. Spring; 44. First rotating shaft; 45. Cylindrical gear; 46. Second rotating shaft; 47. Third rotating shaft; 48. Second bevel gear; 49. Ball bearing. DETAILED DESCRIPTION

[0047] The specific implementation methods of the present application will be further described in detail below with reference to the accompanying drawings. Specific implementation method 1

[0049] The following is a specific implementation of the high-purity graphite preparation device of the present invention.

[0050] The high-purity graphite preparation device under this specific embodiment is as follows Figure 1-Figure 9 As shown, it includes: a support frame 1, a cabinet body 2, a cabinet door 3, a door lock 5, a metal jacket 29, a rubber sealing pad 33, a heating wire 32, a movable cylinder 27, a connecting block 16, a loading mechanism and a negative pressure mechanism;

[0051] The cabinet body 2 is fixedly installed on the top of the support frame 1, the cabinet door 3 is installed at the front opening of the cabinet body 2 through a hinge 6, the door lock 5 is installed between one side of the cabinet door 3 and the cabinet body 2, the metal jacket 29 is fixedly installed on the inner wall of the cabinet body 2 and the back of the cabinet door 3, the interior of the metal jacket 29 is fixedly filled with a heat insulation layer 30, and the rubber sealing gasket 33 is fixedly bonded to the metal jacket 29 on the cabinet door 3; an insulating end block 31 is fixedly installed on the metal jacket 29 inside the cabinet body 2, the heating wire 32 is fixedly installed on the end block 31, and a handle 4 is fixedly installed on the cabinet door 3;

[0052] The movable cylinder 27 is fixedly mounted on the back of the cabinet 2, and the connecting block 16 is fixedly mounted on the output shaft end of the movable cylinder 27. The connecting block 16 is connected to a plurality of evenly distributed loading mechanisms for placing graphite raw materials;

[0053] A plurality of evenly distributed through holes are provided on one side of the cabinet 2, the through holes pass through the metal jacket 29 and the heat insulation layer 30, the loading mechanism passes through the through holes, and the loading mechanism is located inside the cabinet 2;

[0054] The negative pressure mechanism is disposed on one side of the cabinet 2, and the output end of the negative pressure mechanism is connected to the top of the cabinet 2; a temperature sensor is disposed inside the cabinet 2;

[0055] The material loading mechanism includes: a first bevel gear 28, a cylinder 34, a rack 35, a rotating bar 39, a pushing bar 40, a first rotating shaft 44, a cylindrical gear 45, a second rotating shaft 46, a third rotating shaft 47 and a second bevel gear 48;

[0056] The negative pressure mechanism includes: a cylinder 7, a fixing frame 8, a first connecting pipe 9, a second connecting pipe 10, a pressure gauge 11, a piston disc 18, a screw 12, a guide rod 13, a rotating screw hole seat 22, a worm wheel 23, a worm 24, a fixing plate 25 and a servo motor 26. Specific implementation method 2

[0058] The following is a specific implementation of the material loading mechanism of the high-purity graphite preparation device of the present invention.

[0059] The material loading mechanism of the high-purity graphite preparation device in this specific embodiment is as follows: Figure 1-Figure 9 As shown, it includes: a first bevel gear 28, a cylinder 34, a rack 35, a rotating bar 39, a push bar 40, a first rotating shaft 44, a cylindrical gear 45, a second rotating shaft 46, a third rotating shaft 47 and a second bevel gear 48;

[0060] A pressure plate 14 is rotatably mounted on one end of the cylinder 34, a sealing pressure pad 20 is fixedly bonded to the disk surface of the pressure plate 14 close to the cylinder 34, a shaft damper is provided at the connection between the pressure plate 14 and the cylinder 34, a plurality of chambers are provided inside the cylinder 34 along the length direction, the openings of the plurality of chambers are all covered with an arc-shaped shielding plate 37, a slider 19 is fixedly mounted on the plate surface of the arc-shaped shielding plate 37, an arc-shaped slide groove 36 is provided on the outer wall of the cylinder 34, the slider 19 is slidably mounted inside the arc-shaped slide groove 36, a connecting strip 38 is fixedly mounted between two adjacent arc-shaped shielding plates 37;

[0061] A plurality of connecting rods 15 are fixedly installed between the pressure plates 14 at one end of the plurality of loading mechanisms, wherein the pressure plate 14 on one of the loading mechanisms is fixedly connected to one end of the connecting block 16, and the diameter of the pressure plate 14 is larger than the aperture of the through hole;

[0062] The cylindrical body 34 is provided with an end groove at one end away from the pressure plate 14, and the first rotating shaft 44, the second rotating shaft 46 and the third rotating shaft 47 are rotatably installed inside the end groove. The cylindrical gear 45 is fixedly sleeved on the first rotating shaft 44, and the cylindrical gear 45 is meshedly connected with the rack 35. The push bar 40 is fixedly installed at one end of the rack 35. The first bevel gear 28 is fixedly sleeved on the cylindrical surface of the first rotating shaft 44 and on the bottom end of the second rotating shaft 46. The two first The bevel gears 28 are meshed and connected, and a second bevel gear 48 is fixedly sleeved on the top of the second rotating shaft 46 and the cylindrical surface of the third rotating shaft 47. The two second bevel gears 48 are meshed and connected, and the third rotating shaft 47 is located in the middle of one end of the cylinder 34. One end of the third rotating shaft 47 is fixedly connected to the rotating bar 39. The rotating bar 39 is an L-shaped rod-shaped structure, and one end of the rotating bar 39 is fixedly connected to the arc-shaped shielding plate 37 located at the end of the cylinder 34 away from the pressure plate 14.

[0063] An inner groove 41 is formed inside the rack 35 along the length direction, and a positioning rod 42 is connected to the inner groove 41 with clearance fit, and the positioning rod 42 is fixedly installed inside the end groove;

[0064] A spring 43 is sleeved on the positioning rod 42; one end of the spring 43 is fixedly connected to one end of the rack 35, and the other end of the spring 43 is fixedly connected to the groove wall of the end groove. Specific implementation method three

[0066] The following is a specific implementation of the negative pressure mechanism of the high-purity graphite preparation device of the present invention.

[0067] The negative pressure mechanism of the high-purity graphite preparation device in this specific embodiment is as follows: Figure 1-Figure 9 As shown, it includes: a cylinder 7, a fixing frame 8, a first connecting pipe 9, a second connecting pipe 10, a pressure gauge 11, a piston plate 18, a screw 12, a guide rod 13, a rotating screw hole seat 22, a worm wheel 23, a worm 24, a fixing plate 25 and a servo motor 26;

[0068] A plurality of fixing frames 8 are fixedly installed on the outer wall of the cylinder 7, one side end of the fixing frame 8 is fixedly installed with one side outer wall of the cabinet 2, the top of the cylinder 7 is fixedly connected with the first connecting pipe 9, the end of the first connecting pipe 9 is connected with one end of the pressure gauge 11, the other end of the pressure gauge 11 is connected with one end of the second connecting pipe 10, the end of the second connecting pipe 10 is fixedly connected with the top of the cabinet 2, and the second connecting pipe 10 is connected with the inside of the cabinet 2; the inside of the cylinder 7 is matched with the piston disc 18, the bottom of the piston disc 18 is fixedly installed with the screw 12 and the guide rod 13, the guide rod 13 is connected with the guide hole 21 provided at the bottom of the cylinder 7 in a clearance fit, and the screw 12 is threadedly connected with the screw hole in the middle of the rotating screw hole seat 22;

[0069] The top of the rotating screw hole seat 22 is rotatably mounted at the bottom center of the cylinder 7, a plurality of balls 49 are provided at the connection between the rotating screw hole seat 22 and the cylinder 7, the bottom of the rotating screw hole seat 22 is fixedly sleeved with the worm wheel 23, the worm wheel 23 is meshedly connected with the worm 24, the number of the fixed plates 25 is two, the two fixed plates 25 are fixedly mounted at the bottom of the cylinder 7, the worm 24 is rotatably mounted between the two fixed plates 25, the output shaft end of the servo motor 26 is fixedly connected to one end of the worm 24, and the servo motor 26 is fixedly mounted at the bottom of the cylinder 7;

[0070] A control cabinet 17 is fixedly mounted on one side of the cylinder 7 , and the control cabinet 17 is electrically connected to the servo motor 26 , the movable cylinder 27 , the heating wire 32 and the temperature sensor. Specific implementation method four

[0072] The following is a specific implementation method of the method for preparing high-purity graphite of the present invention.

[0073] The method for preparing high-purity graphite in this specific embodiment is as follows: Fig.10 As shown, the following steps are included:

[0074] Step a: Graphite forming

[0075] The raw graphite powder is molded into spheres or blocks and then dried;

[0076] Step b: Put graphite into

[0077] Close the cabinet door 3, lock the door lock 5, and provide a closed seal by pressing the rubber sealing pad 33. Then, extend the movable cylinder 27 to drive the loading mechanism to move to the outside of the cabinet 2, and then push the push bar 40 to move the rack 35. The rack 35 slides with the positioning rod 42, and at the same time, compress the spring 43, and the rack 35 is meshed with the cylindrical gear 45, so that the first rotating shaft 44 rotates, and the second rotating shaft 46 rotates through the meshing of the two first conical gears 28, and further through the two second conical gears 28. The gear 48 is meshed to rotate the third rotating shaft 47, and further drives the arc shielding plate 37 to rotate together through the rotating bar 39. Since the multiple arc shielding plates 37 are connected by the connecting bar 38, the multiple arc shielding plates 37 rotate together, wherein the slider 19 slides in the slide groove, so that all the chambers are opened, and then the raw materials are put into the chamber, and then the push bar 40 is released, and the elastic force of the spring 43 is used to reset the rack 35, so that the arc shielding plate 37 covers the chamber again to achieve closure;

[0078] Step c: vacuum heating

[0079] The movable cylinder 27 contracts, so that the loading mechanism enters the cabinet 2, until the sealing pressure pad 20 on the pressure plate 14 is pressed against the outer wall of one side of the cabinet 2, closing the through hole. After the loading mechanism enters the cabinet 2, the push strip 40 is squeezed through the metal jacket 29 inside the cabinet 2, thereby opening the chamber, and then the heating wire 32 is heated, and the worm 24 is driven to rotate by the servo motor 26. The rotating screw hole seat 22 is rotated through the engagement between the worm 24 and the worm wheel 23, driving the screw 12, and cooperating with the guiding effect between the guide rod 13 and the guide hole 21, so that the piston plate 18 moves in the cylinder 7, thereby achieving air extraction, and the air in the cabinet 2 enters the cylinder 7 through the second connecting pipe 10, the pressure gauge 11, and the first connecting pipe 9, thereby evacuating the cabinet 2 to achieve vacuum heating and graphite purification;

[0080] Step d: Graphite removal

[0081] Driven by the servo motor 26, the air pressure in the cabinet 2 is restored to atmospheric pressure, and then the movable cylinder 27 is extended to move the loading mechanism to the outside of the cabinet 2, and then the cylinder 34 is rotated to rotate the cylinder 34 and the pressure plate 14 so that the chamber opening faces downward, and then the push bar 40 is pushed to move the rack 35, thereby moving the arc-shaped baffle plate 37, opening the chamber opening, and taking out the purified graphite.

[0082] It should be noted that the above is only a specific implementation method of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0083] It should also be noted that, in the absence of conflict, the specific implementations and features of the specific implementations in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the specific implementations.

Claims

1. A high-purity graphite preparation device, characterized in that: include: A support frame (1), a cabinet body (2), a cabinet door (3), a door lock (5), a metal jacket (29), a rubber sealing pad (33), a heating wire (32), a movable cylinder (27), a connecting block (16), a loading mechanism and a negative pressure mechanism; The cabinet body (2) is fixedly mounted on the top of the support frame (1); the cabinet door (3) is mounted on the front opening of the cabinet body (2) via a hinge (6); the door lock (5) is mounted between one side of the cabinet door (3) and the cabinet body (2); the metal jacket (29) is fixedly mounted on the inner wall of the cabinet body (2) and the back of the cabinet door (3); a heat insulation layer (30) is fixedly filled and mounted inside the metal jacket (29); the rubber sealing pad (33) is fixedly bonded to the metal jacket (29) located on the cabinet door (3); an insulating end block (31) is fixedly mounted on the metal jacket (29) located inside the cabinet body (2); the heating wire (32) is fixedly mounted on the end block (31); and a handle (4) is fixedly mounted on the cabinet door (3); The movable cylinder (27) is fixedly mounted on the back of the cabinet (2), the connecting block (16) is fixedly mounted on the output shaft end of the movable cylinder (27), and the connecting block (16) is connected to a plurality of evenly distributed loading mechanisms for placing graphite raw materials; A plurality of evenly distributed through holes are formed on one side of the cabinet (2), the through holes passing through the metal jacket (29) and the heat insulation layer (30), the loading mechanism passing through the through holes, and the loading mechanism being located inside the cabinet (2); The negative pressure mechanism is arranged on one side of the cabinet (2), and the output end of the negative pressure mechanism is connected to the top of the cabinet (2); a temperature sensor is arranged inside the cabinet (2); The material loading mechanism comprises: a first bevel gear (28), a cylindrical body (34), a rack (35), a rotating bar (39), a pushing bar (40), a first rotating shaft (44), a cylindrical gear (45), a second rotating shaft (46), a third rotating shaft (47) and a second bevel gear (48); The negative pressure mechanism comprises: a cylinder (7), a fixing frame (8), a first connecting pipe (9), a second connecting pipe (10), a pressure gauge (11), a piston disc (18), a screw (12), a guide rod (13), a rotating screw hole seat (22), a worm wheel (23), a worm (24), a fixing plate (25) and a servo motor (26).

2. The material loading mechanism of the high-purity graphite preparation device according to claim 1, characterized in that: A pressure plate (14) is rotatably mounted on one end of the cylinder (34); a sealing pressure pad (20) is fixedly bonded to a disk surface of the pressure plate (14) on one side close to the cylinder (34); a shaft damper is provided at the connection between the pressure plate (14) and the cylinder (34); a plurality of chambers are provided inside the cylinder (34) along the length direction; the openings of the plurality of chambers are covered with an arc-shaped shielding plate (37); a slider (19) is fixedly mounted on the plate surface of the arc-shaped shielding plate (37); an arc-shaped slide groove (36) is provided on the outer wall of the cylinder (34); the slider (19) is slidably mounted inside the arc-shaped slide groove (36); and a connecting strip (38) is fixedly mounted between two adjacent arc-shaped shielding plates (37); A plurality of connecting rods (15) are fixedly mounted between the pressure plates (14) at one end of the plurality of material loading mechanisms, wherein the pressure plate (14) on one of the material loading mechanisms is fixedly connected to one end of a connecting block (16), and the diameter of the pressure plate (14) is larger than the aperture of the through hole; An end groove is formed at one end of the cylindrical body (34) away from the pressure plate (14), and the first rotating shaft (44), the second rotating shaft (46) and the third rotating shaft (47) are rotatably mounted inside the end groove. The cylindrical gear (45) is fixedly sleeved on the first rotating shaft (44), and the cylindrical gear (45) is meshingly connected with the rack (35). The push bar (40) is fixedly mounted on one end of the rack (35). The first bevel gear (28) is fixedly sleeved on the cylindrical surface of the first rotating shaft (44) and on the bottom end of the second rotating shaft (46). The two first The bevel gears (28) are meshingly connected, a second bevel gear (48) is fixedly sleeved on the top of the second rotating shaft (46) and the cylindrical surface of the third rotating shaft (47), the two second bevel gears (48) are meshingly connected, the third rotating shaft (47) is located in the middle of one end of the cylinder (34), one end of the third rotating shaft (47) is fixedly connected to the rotating bar (39), the rotating bar (39) is an L-shaped rod-shaped structure, and one end of the rotating bar (39) is fixedly connected to the arc-shaped baffle plate (37) located at the end of the cylinder (34) away from the pressure plate (14); An inner groove (41) is provided inside the rack (35) along the length direction, a positioning rod (42) is connected to the inner groove (41) in a clearance fit, and the positioning rod (42) is fixedly installed inside the end groove; A spring (43) is sleeved on the positioning rod (42); one end of the spring (43) is fixedly connected to one end of the rack (35), and the other end of the spring (43) is fixedly connected to the groove wall of the end groove.

3. The negative pressure mechanism of the high-purity graphite preparation device according to claim 1, characterized in that: A plurality of fixing frames (8) are fixedly mounted on the outer wall of the cylinder (7), one end of the fixing frame (8) is fixedly mounted on the outer wall of one side of the cabinet (2), the top of the cylinder (7) is fixedly connected with the first connecting pipe (9), the end of the first connecting pipe (9) is connected to one end of the pressure gauge (11), the other end of the pressure gauge (11) is connected to one end of the second connecting pipe (10), the end of the second connecting pipe (10) is fixedly connected to the top of the cabinet (2), and the second connecting pipe (10) is connected to the inside of the cabinet (2); the piston disc (18) is matched and connected to the inside of the cylinder (7), the screw rod (12) and the guide rod (13) are fixedly mounted on the bottom of the piston disc (18), the guide rod (13) is loosely matched and connected to the guide hole (21) provided at the bottom of the cylinder (7), and the screw rod (12) is threadedly connected to the screw hole in the middle of the rotating screw hole seat (22); The top of the rotating screw hole seat (22) is rotatably mounted at the bottom center of the cylinder (7), a plurality of balls (49) are provided at the connection between the rotating screw hole seat (22) and the cylinder (7), the bottom of the rotating screw hole seat (22) is fixedly sleeved with the worm wheel (23), the worm wheel (23) is meshingly connected with the worm (24), the number of the fixing plates (25) is two, the two fixing plates (25) are fixedly mounted at the bottom of the cylinder (7), the worm (24) is rotatably mounted between the two fixing plates (25), the output shaft end of the servo motor (26) is fixedly connected to one end of the worm (24), and the servo motor (26) is fixedly mounted at the bottom of the cylinder (7); A control cabinet (17) is fixedly mounted on one side of the cylinder (7), and the control cabinet (17) is electrically connected to the servo motor (26), the movable cylinder (27), the heating wire (32) and the temperature sensor.

4. A method for preparing high-purity graphite, characterized in that: The high-purity graphite preparation device according to claim 1 comprises the following steps: Step a: Graphite forming The raw graphite powder is molded into spheres or blocks and then dried; Step b: Put graphite into The cabinet door (3) is closed, the door lock (5) is locked, and the rubber seal (33) is compressed to provide a closed seal. Then, the movable cylinder (27) is extended to drive the loading mechanism to move to the outside of the cabinet (2), and then the push bar (40) is pushed to move the rack (35). The rack (35) and the positioning rod (42) slide, and at the same time, the spring (43) is compressed, and the rack (35) and the cylindrical gear (45) are meshed, so that the first rotating shaft (44) rotates, and the two first bevel gears (28) are meshed, so that the second rotating shaft (46) rotates, and further through the two second bevel gears (28) the second rotating shaft (46) rotates. The two bevel gears (48) mesh to rotate the third rotating shaft (47), and further drive the arc-shaped shielding plate (37) to rotate together through the rotating bar (39). Since the plurality of arc-shaped shielding plates (37) are connected by the connecting bar (38), the plurality of arc-shaped shielding plates (37) rotate together, wherein the slider (19) slides in the slide groove to open all the chambers, and then the raw material is placed in the chamber, and then the push bar (40) is released, and the rack (35) is reset through the elastic force of the spring (43), so that the arc-shaped shielding plate (37) covers the chamber again to achieve closure; Step c: vacuum heating The movable cylinder (27) contracts, causing the loading mechanism to enter the cabinet (2) until the sealing pressure pad (20) on the pressure plate (14) is pressed against the outer wall of one side of the cabinet (2) to close the through hole. After the loading mechanism enters the cabinet (2), the push strip (40) is squeezed through the metal jacket (29) inside the cabinet (2), thereby opening the chamber. Then, the heating wire (32) is heated, and the worm (24) is driven to rotate by the servo motor (26). The piston plate (18) is meshed with the worm wheel (23) to rotate the rotating screw hole seat (22), drive the screw rod (12), cooperate with the guiding action between the guide rod (13) and the guide hole (21), realize the movement of the piston plate (18) in the cylinder (7), thereby realizing air extraction, and the air in the cabinet (2) enters the cylinder (7) through the second connecting pipe (10), the pressure gauge (11), and the first connecting pipe (9), thereby evacuating the cabinet (2), realizing vacuum heating, and purifying graphite; Step d: Graphite removal The servo motor (26) is used to drive the air pressure in the cabinet (2) to return to atmospheric pressure. Then, the movable cylinder (27) is extended to move the loading mechanism to the outside of the cabinet (2). Then, the cylinder (34) is rotated to rotate the cylinder (34) and the pressure plate (14) so ​​that the chamber opening faces downward. Then, the push bar (40) is pushed to move the rack (35), thereby moving the arc-shaped baffle (37), opening the chamber opening, and taking out the purified graphite.

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