Acetylene carbon black conductive material granulating device and method

Abstract

The invention discloses an acetylene carbon black conductive material granulating device and method, and particularly relates to the technical field of black processing granulating equipment.The acetylene carbon black conductive material granulating device comprises a granulating machine frame, a feeding hopper is arranged at the top of the granulating machine frame, a pressing roller relatively rotating for granulating is arranged in the granulating machine frame, and the pressing roller comprises an outer sheath shell; granulating grooves are distributed in the outer circumferential surface of the outer sheath shell in the axial direction and the circumferential direction, and the granulating grooves of the outer sheath shell can be periodically opposite to each other; an inner pressing die capable of moving in the radial direction is arranged in the outer sheath shell. A driving mechanism I used for driving the two outer sheath shells to rotate relatively and a mold closing mechanism used for controlling the inner pressing molds to move oppositely to extrude materials when the granulating grooves are right opposite to each other are also arranged on the rack of the granulating machine. The independent and closed compression molding of each carbon black particle is realized by combining the rotating outer sheath shell and the granulating groove with the inner pressing mold composite pressing roller structure and controlling mold closing by the fixed convex roller.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of black processing granulation equipment, in particular to an acetylene carbon black conductive material granulation device and method. BACKGROUND

[0002] As a high-performance conductive filler, acetylene carbon black is widely used in lithium ion batteries, conductive rubber, conductive plastic, antistatic materials and other fields; in these applications, it is usually necessary to process the powder-shaped acetylene carbon black into particles with certain particle size, strength and fluidity through a granulator to improve its processing performance, reduce dust pollution, improve the dispersion uniformity in the matrix and the stability of the conductive network of the final product. The carbon black powder is mainly mixed with water and carbon black powder through a strong stirring system and degassing, and then pressed into spherical particles. The granulator generally adopts a special pressure roller structure with notches on the surface, and the carbon black powder is pressed into a particle plate through the extrusion force between the pressure rollers. Then the particle plate is broken and disassembled by a breaking roller to obtain conductive carbon black particles. However, in the process of breaking the particle plate by the breaking roller, due to the relatively large distance between the breaking rods or breaking knives on the general breaking roller, there are often some particles that have not been disassembled, and a considerable part of the particles are broken into defective products. Therefore, we propose an acetylene carbon black conductive material granulation device and method to solve the above problems. SUMMARY

[0003] The present application aims to provide an acetylene carbon black conductive material granulation device and method to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an acetylene carbon black conductive material granulation device, comprising a granulator frame, a feed hopper is arranged on the top of the granulator frame, a pressure roller for relative rotation for granulation is arranged below the discharge port of the feed hopper in the granulator frame, The pressure roller comprises an outer sheath that can rotate relative to the granulator frame, a plurality of granulation grooves are distributed on the outer circumferential surface of each outer sheath along the axial and circumferential directions, and the granulation grooves of the two outer sheaths can periodically face each other; An inner pressure die that can move radially is arranged inside the outer sheath, and the die surface shape of the inner pressure die is matched with the profile of the granulation groove; A driving mechanism one for driving the relative rotation of the two outer sheaths is further arranged on the granulator frame, and a die closing mechanism for controlling the relative movement of the inner pressure die to extrude the material when the granulation grooves face each other is further arranged on the granulator frame; A multi-stage sorting assembly for screening the carbon black particles produced is arranged at the bottom of the granulator frame, and a fan assembly for blowing the carbon black powder raised during the screening process back to the stirring system is further arranged.

[0005] Preferably, the driving mechanism comprises a motor I fixed on the granulator frame, and a gear II fixed on the output shaft of the motor I and rotatably connected to the granulator frame; The inner support frame is sleeved in the outer sheath, and a wire slot corresponding to the inner pressure die I is formed in the upper portion of the inner support frame; The two ends of the outer sheath are connected with connecting flanges through bolts, the two ends of the inner support frame are respectively inserted into the connecting flanges, a connecting sleeve is fixed on the middle portion of the outer side of the connecting flanges, and the connecting sleeve is rotatably connected to the granulator frame; A gear I is fixed on the outer side of the connecting sleeve, and the two gears I are meshed with each other; The gear II is meshed with one of the gears I.

[0006] Preferably, the die clamping mechanism comprises a convex roller arranged in each inner support frame, convex roller shafts are fixed in the middle of the two ends of the convex roller, and the convex roller shafts are fixedly connected to the granulator frame through the middle portions of the connecting sleeve and the connecting flange; A guide column is fixed on the back of the inner pressure die, the guide column is slidably connected in the wire slot, springs are arranged on the two sides of the inner pressure die, and the other ends of the springs are arranged on the outer sheath, so that the inner pressure die has a tendency to be reset away from the granulation tank under the action of the springs; The guide column abuts against the surface of the convex roller.

[0007] Preferably, the convex roller has a convex portion, and the profile of the convex portion of the convex roller is configured to push the corresponding two inner pressure dies to the maximum stroke at the same time only when the two granulation tanks on the two outer sheaths are completely opposite.

[0008] Preferably, the multi-stage sorting assembly comprises a plurality of layers of screens arranged in a downward inclination, and the mesh size of each layer of screen decreases in sequence from top to bottom. An arc-shaped groove is arranged on the granulator frame; Each layer of screen is slidably connected in the arc-shaped groove and can reciprocatingly swing; A driving mechanism II for driving the plurality of layers of screens to reciprocatingly swing is arranged on the granulator frame.

[0009] Preferably, the driving mechanism II comprises a motor II fixed on the granulator frame; A helical gear ring fixedly connected with the frame of the screen is further arranged, the helical gear ring is meshed with a helical gear, the helical gear is rotatably connected to the granulator frame, the rotation shaft of the helical gear is fixedly connected with a belt pulley, and a belt is sleeved between the two belt pulleys; The output shaft of the motor II is connected with one of the belt pulleys.

[0010] Preferably, a discharge port is arranged on the side of the granulator frame, corresponding to the low end of each layer of screen. The sorting cavity is formed in the granulator frame corresponding to the screen and the compression roller, and the air outlet of the fan assembly is opposite to the bottom of the sorting cavity; The top of the granulator frame is provided with an air outlet communicating with the sorting cavity, and the air outlet is connected to the stirring system of the carbon black powder through a pipeline.

[0011] Preferably, the fan assembly includes a fan and a wind guide cover, and the wind power of the fan is configured to be able to blow up the carbon black powder falling from the screen and adhering to the screen during the screening process, so that the carbon black powder is discharged through the air outlet and recovered, but the wind power is insufficient to blow up the carbon black particles meeting the size requirements.

[0012] Preferably, an adjusting valve or a vibrating feeder is arranged at the discharge port of the feeding hopper for controlling the flow of the carbon black powder entering between the compression rollers.

[0013] A method for using the granulator for acetylene carbon black conductive material, comprising the following steps: Step one, pour the carbon black powder into the feeding hopper and enter between the compression rollers for granulation; Step two, start motor one, and drive gear two to rotate and drive gear one to rotate relatively, and through the transmission of gear one, drive the inner support frame and the outer sheath to rotate relatively, and at this time, the outer sheath and the connecting sleeve fixed on the connecting flange of the granulator frame rotate; Step three, the carbon black powder from the feeding hopper enters the granulation tank above, and under the driving of the rotation of the outer sheath, the granulation tank loaded with carbon black powder rotates to the middle and is opposite to the other granulation tank on the outer sheath to extrude the carbon black powder, at this time, the guide column fixed on the inner compression die contacts with the connecting flange and pushes the inner compression die to move relatively at this position, and the carbon black powder is compressed and granulated in the granulation tank, and the two inner compression dies are combined and granulated in the abutting granulation tank to directly form individual carbon black particles; Step four, the carbon black particles fall between the compression rollers and fall on the uppermost screen, start motor two, and drive the pulley to rotate, and through the transmission of the belt, drive the bevel gear to rotate forward and backward, and drive the screen to swing back and forth through the bevel gear ring, and screen the carbon black particles, different sizes of carbon black particles are respectively on the upper and lower screens, and gradually move to the discharge port on the inclined screen for discharge; Step five, during the screening process of the multi-stage sorting assembly, start the fan assembly, and the fan assembly blows upward, blows the carbon black powder on the sorting cavity and the screen upward, blows out from the air outlet, and re-transported to the stirring system of the carbon black powder.

[0014] As a preferred scheme of the present application, wherein: Compared with the prior art, the present application has the following advantages: 1. The acetylene carbon black conductive material granulating device, by the combination of the rotating outer sheath and the granulating tank and the inner pressure die compound compression roller structure, the independent, closed die forming of each carbon black particle is realized by the fixed convex roller control die combination; when the two outer sheath granulating tanks rotate to the completely opposite position, the two inner pressure dies inside move synchronously towards each other under the precise pushing of the convex roller convex part, and strong and uniform counter-pressing pressure is applied to the carbon black powder in the granulating tank. This forming method can directly form the carbon black particles, saves the processing program of the intermediate formed carbon black particle plate, and effectively improves the working efficiency of the granulator.

[0015] 2. The acetylene carbon black conductive material granulating device, by the high integration of the three function modules of precision granulation, online multi-stage screening and closed-loop airflow dust recovery in a closed granulator frame, the "one-stop" continuous production from powder to classified particle product is realized; after the particle forming, it directly falls into the built-in multi-layer swing screen driven by the unified driving mechanism to carry out real-time screening, which saves the independent crushing and screening equipment and material transfer link, shortens the process, reduces the energy consumption and equipment occupation; and the upward airflow system of the bottom fan assembly air supply and the top air outlet air exhaust (or natural exhaust); the airflow can effectively lift and carry all the fine carbon black powder generated in the screening process and the fine carbon black powder rubbed off from the surface of the particles to the top, and return to the front section of the stirring system through the pipeline, forming a high-efficiency closed-loop dust recycling circuit. This greatly reduces the material loss, realizes clean production, and also reduces the pollution to the equipment interior, reduces the maintenance frequency and cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, a brief introduction will be given below to the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The structure schematic diagram of the present application.

[0018] Figure 2 The structure schematic diagram of the present application in the front view section; Figure 3 The structure schematic diagram of the present application in the right view section; Figure 4 The structure schematic diagram of the present application in the discharge port display; Figure 5 The structure schematic diagram of the present application in the pressure roller transmission cooperation relationship; Figure 6 The structure schematic diagram of the present application in the pressure roller connection; Figure 7 This is a cross-sectional structural diagram of the pressure roller connection in this invention; Figure 8 This is a schematic diagram of the internal support frame in this invention; Figure 9 This is a schematic diagram of the connection structure of the multi-level sorting components in this invention.

[0019] In the diagram: 1. Granulator frame; 101. Air outlet; 102. Sorting chamber; 103. Arc-shaped groove; 104. Discharge port; 2. Feed hopper; 3. Pressure roller; 31. Outer sheath; 311. Granulation trough; 32. Gear one; 33. Convex roller; 331. Convex roller shaft; 34. Gear two; 35. Inner support frame; 351. Groove; 36. Connecting flange; 361. Connecting sleeve; 37. Inner pressure mold; 38. Spring; 39. Guide post; 4. Motor 1; 5. Motor 2; 6. Multi-stage sorting assembly; 61. Screen; 62. Helical gear ring; 63. Helical gear; 64. Pulley; 65. Belt; 7. Fan assembly. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Figures 1-9 As shown, this invention provides a granulation device for acetylene carbon black conductive materials, including a granulator frame 1. The granulator frame 1 is typically welded from shaped steel and steel plates to form a robust and hollow box structure. All working parts are installed inside it, providing good sealing to prevent dust from escaping. A feed hopper 2 is provided at the top of the granulator frame 1. The feed hopper 2 can be conical for easy material feeding. Inside the granulator frame 1, directly below the feed inlet of the feed hopper 2, is a pressure roller 3 that rotates relative to the material for granulation. The pressure roller 3 includes an outer sheath 31 that can rotate relative to the pellet mill frame 1. The outer sheath 31 is usually made of high-strength alloy steel and the surface can be hardened to improve wear resistance. Multiple pelleting grooves 311 are distributed along the axial and circumferential directions on the outer circumferential surface of each outer sheath 31. The pelleting grooves 311 of two outer sheaths 31 can periodically face each other. The shape of the granulation tank 311 can be designed according to the required particle shape, such as hemispherical, ellipsoidal, cylindrical, etc., and its size determines the final particle size. The outer sheath 31 is provided with an inner pressure mold 37 that can move radially. The shape of the mold surface of the inner pressure mold 37 is adapted to the contour of the granulation tank 311. The inner pressure mold 37 can be made of tool steel and the mold surface is polished to facilitate demolding. The inner pressure mold 37 is a movable mold core, and its movement is the key to achieving precise pressure. The granulator frame 1 is also provided with a drive mechanism 1 for driving the two outer sheaths 31 to rotate relative to each other, and a mold closing mechanism for controlling the inner pressure molds 37 to move towards each other to squeeze the material when the granulation tanks 311 are facing each other. The drive mechanism 1 ensures that the two outer sheaths 31 rotate synchronously in opposite directions, while the mold closing mechanism is independent of the rotation drive and precisely controls the pressurization time. The bottom of the granulator frame 1 is equipped with a multi-stage sorting component 6 for screening the produced carbon black granules, and a blower component 7 for blowing the carbon black powder raised during the screening process back to the mixing system. The multi-stage sorting component 6 and the blower component 7 are arranged vertically and vertically, with a compact structure, which allows granulation, screening and dust recovery to be completed continuously in a closed space.

[0022] Furthermore, the drive mechanism includes a motor 4 fixed on the granulator frame 1. The motor 4 can be a variable frequency motor for easy speed adjustment. A gear 34 is rotatably connected to the output shaft of the motor 4 via a key. The gear 34 is rotatably supported on the frame 1 via bearings. The motor 4 provides the original power. An inner support frame 35 is fitted inside the outer sheath 31. The inner support frame 35 is a cylindrical skeleton consisting of a disc on one side and a connecting rod or spoke in the middle, which has high rigidity. The upper edge of the inner support frame 35 has grooves 351 that correspond one-to-one with the inner mold 37. The grooves 351 are axial straight grooves to facilitate the smooth installation of the inner support frame 35 and limit the position of the inner mold 37. The inner support frame 35, as a skeleton, is fixed on the outer sheath 31 to limit the range of movement of the inner mold 37. The outer sheath 31 is bolted to both ends with connecting flanges 36, which are used to seal the ends of the outer sheath 31 and transmit torque. The two ends of the inner support frame 35 are respectively inserted into the grooves inside the connecting flange 36 by locating pins or keys to achieve circumferential positioning. A connecting sleeve 361 is fixed in the middle of the outer side of the connecting flange 36. The connecting sleeve 361 is rotatably connected to the granulator frame 1 by rolling bearings. In this way, the connecting flange 36, the connecting sleeve 361 and the outer sheath 31 become a rotatable whole, while the inner support frame 35 is positioned by the insertion relationship between its end and the connecting flange 36. Therefore, it is stationary relative to the outer sheath 31. This structure realizes the synchronous rotation of the outer sheath 31 and the inner support frame 35. Gear 32 is fixedly sleeved on the outside of the connecting sleeve 361 by a key. The two gears 32 are of the same specification and mesh with each other to ensure that the rotation speed of the two outer sheaths 31 is absolutely synchronized. Gear 2 34 meshes with one of the gears 1 32. Motor 1 4 drives one of the gears 1 32 through gear 2 34, thereby driving the two gears 1 32 and the outer sheath 31 connected to them to rotate synchronously in opposite directions.

[0023] Furthermore, the mold clamping mechanism includes a cam roller 33 disposed inside each inner support frame 35. The cam roller 33 is a stationary core component. Its shape is not a simple cylinder, but a cam with a specific profile. The cam roller 33 has a cam roller shaft 331 fixed at the middle of both ends. The cam roller shaft 331 passes through the middle of the connecting sleeve 361 and the center hole of the connecting flange 36 (the hole size is larger than the shaft diameter, leaving a rotation clearance) and is fixedly connected to the pellet mill frame 1. The cam roller 33 is fixed to the pellet mill frame 1 by the cam roller shaft 331 and is in an absolutely stationary position. Its profile determines the motion law of the inner pressure mold 37. A guide post 39 is fixed on the back side of the inner mold 37 (i.e., the side facing the center of the inner support 35). The guide post 39 can be a cylindrical pin. The guide post 39 is slidably connected in the groove 351. Springs 38 are installed on both sides of the inner mold 37. The other end of the spring 38 is installed on the inner wall of the outer sheath 31. The spring 38 acts on the inner mold 37, causing it to tend to return to its original position away from the granulation tank 311. The spring 38 is preferably a compression spring. Its preload causes the inner mold 37 to tend to return to its original position away from the granulation tank 311 (i.e., retract in the centripetal direction) in its natural state. The spring 38 provides the rebound force of the inner mold 37, causing it to retract in the non-pressurized position. The inner end of the guide post 39 (the end closest to the cam roller 33) is equipped with a wear-resistant roller or is directly machined into a smooth curved surface, which abuts against the surface of the cam roller 33. When the outer sheath 31 drives the inner pressure mold 37 to rotate together, the end of the guide post 39 always keeps in contact with the surface of the stationary cam roller 33. The contour change of the cam roller 33 at a specific position is converted into the radial displacement of the inner pressure mold 37 through the guide post 39.

[0024] Furthermore, the cam roller 33 has a protrusion, and the profile of the protrusion is configured such that only when the granulation grooves 311 on the two outer sheaths 31 are perfectly aligned, the corresponding two inner molds 37 are simultaneously pushed to their maximum stroke. The profile of the cam roller 33 is precisely calculated and machined to ensure that only when a pair of granulation grooves 311 rotate to the "mold closing position" where they are perfectly aligned with each other, do the two corresponding guide pillars 39 just reach the highest point of the protrusion of the cam roller 33, thereby synchronously pushing the two inner molds 37 towards the center and applying maximum counter-pressure to the material in the cavity. At other rotation angles, the inner molds 37 are in a retracted or semi-retracted state under the action of springs, facilitating material filling and demolding.

[0025] Furthermore, the multi-stage sorting component 6 includes multiple layers of screens 61 arranged at an incline from top to bottom. The mesh size of each layer of screens 61 decreases sequentially from top to bottom. For example, the top layer of screens 61 has the largest mesh size and is used to screen out large carbon black particles; the middle layer of screens 61 has a moderate mesh size and is used to screen out medium carbon black particles; the bottom layer of screens 61 has a smaller mesh size and is used to screen out small carbon black particles. The frame of the screens 61 is usually made of metal, and the screen material can be stainless steel wire mesh. In another embodiment, the granulation tank 311 on the same outer sheath 31 is set with multiple rows of holes for different particle size requirements to realize the simultaneous processing of carbon black particles of multiple sizes and to classify and discharge them through the screens 61, which has a small saving on equipment requirements and costs. The incline arrangement of the screens 61 is conducive to the particles moving towards the lower end under the action of oscillation. The granulator frame 1 is provided with an arc groove 103, which serves as an arc track for the oscillation of the screen 61. Each layer of screen 61 is slidably connected to the arc groove 103 and can swing back and forth. The sides of the screen 61 are provided with sliders or rollers, which are nested in the arc groove 103 so that they can slide back and forth along the arc trajectory to realize swing screening. The granulator frame 1 is equipped with a second drive mechanism that drives the multi-layer screens 61 to reciprocate. One drive source can simultaneously drive all screens 61 to swing synchronously.

[0026] Furthermore, the second drive mechanism includes a second motor 5 fixed on the granulator frame 1, and the second motor 5 may be a motor with a reducer; It also includes a helical toothed ring 62 fixedly connected to the frame of the screen 61. The helical toothed ring 62 is an arc-shaped rack. The helical toothed ring 62 meshes with a helical gear 63. The axis between the helical gears 63 is horizontal. The helical gears 63 are rotatably connected to the granulator frame 1. The rotating shaft of the helical gear 63 is fixedly connected to the pulley 64, and a belt 65 is sleeved between the pulleys 64. The output shaft of motor 5 is connected to one of the pulleys 64. Motor 5 drives multiple helical gears 63 to rotate synchronously through belt 65 and pulley 64. The helical gears 63 mesh with helical toothed rings 62 fixed on the screen 61. Since the helical toothed rings 62 are fixed arc shapes, the rotation of the helical gears 63 forces the helical toothed rings 62 to drive the entire screen 61 to slide back and forth along the arc groove 103. The rotational motion of the helical gears 63 is converted into the reciprocating oscillation of the helical toothed rings 62 and the screen 61 along the arc groove 103. By selecting appropriate helical gear teeth and helical toothed ring arc length, the oscillation angle of the screen can be controlled.

[0027] Furthermore, on the side of the granulator frame 1, corresponding to the lower end of each layer of screen 61, there is a discharge port 104. Particles of different particle sizes and undersize materials are discharged from the corresponding discharge ports 104 for easy collection. Each discharge port 104 can be connected to a hopper for collecting materials of different grades. A sorting chamber 102 is formed inside the granulator frame 1 corresponding to the screen 61 and the pressure roller 3. A large cavity, namely the sorting chamber 102, is formed inside the granulator frame 1 below the pressure roller 3 and around the screen 61. The sorting chamber 102 is a relatively closed space that accommodates the screening process. The air outlet of the blower assembly 7 is directly opposite the bottom of the sorting chamber 102. Its air outlet is directly opposite the bottom of the sorting chamber 102 through a pipe or air guide hood to ensure that the airflow can blow evenly upward across the entire screen area. The top of the granulator frame 1 is provided with an air outlet 101 that communicates with the sorting chamber 102. The air outlet 101 is connected to the carbon black powder mixing tank of the previous process through a pipe to form a closed loop, forming an airflow channel that supplies air from the bottom and exhausts air from the top (or discharges air using positive pressure).

[0028] Furthermore, the blower assembly 7 includes a blower and an air guide hood. Its air volume and air pressure are selected according to the cross-sectional area of ​​the sorting chamber 102 and the suspension velocity of the carbon black powder. Its air force is configured to blow up the carbon black powder falling from the screen 61 and adhering to the screen 61 during the screening process, so that it is discharged and recovered through the air outlet 101. However, it is not enough to blow up carbon black particles that meet the size requirements. The selection of air force is crucial and needs to be designed according to the suspension velocity of the carbon black powder and particles to ensure that only fine powder is lifted without interfering with the screening path of qualified particles.

[0029] Furthermore, a vibrating feeder is provided at the discharge port of the feed hopper 2. Its vibration frequency and amplitude are adjustable, which can achieve more stable and controllable feeding and ensure that the filling amount of each granulation trough 311 is basically the same. It is used to control the flow rate of carbon black powder entering between the pressure rollers 3. Stable feeding is a prerequisite for ensuring that the granulation trough 311 is filled evenly and the particle weight is consistent.

[0030] A method for using an acetylene carbon black conductive material granulation device includes the following steps: Step 1: Pour the carbon black powder into the feed hopper 2 and let it enter between the pressure rollers 3 for granulation; Step 2: Start motor 4. Motor 4 drives gear 34 to rotate and drives gear 32 to rotate relative to it. Through the transmission of gear 32, the connecting sleeve 361 and the connecting flange 36 drive the inner support frame 35 and the outer sheath 31 to rotate relative to each other. At this time, the outer sheath 31 and the connecting sleeve 361 rotate relative to the connecting flange 36 fixed on the granulator frame 1. Step 3: Carbon black powder enters the granulation tank 311 located above from the feed hopper 2. Driven by the rotation of the outer sheath 31, the granulation tank 311 containing carbon black powder rotates to the middle and is directly opposite the granulation tank 311 on the other outer sheath 31 to compress the carbon black powder. At this time, the guide post 39 fixed on the inner pressure mold 37 contacts the connecting flange 36 and pushes the inner pressure mold 37 to move relative to each other, and granulation is performed in the granulation tank 311. The two inner pressure molds 37 close the mold and granulate in the mating granulation tank 311 to directly form individual carbon black particles. Step 4: The carbon black particles fall from between the pressure rollers 3 and onto the uppermost screen 61. Start the motor 5. The motor 5 drives the pulley 64 to rotate. Through the transmission of the belt 65, the pulley 64 drives the helical gear 63 to rotate in both directions. This drives the helical gear ring 62 to swing the screen 61 back and forth, screening the carbon black particles. Carbon black particles of different sizes are placed on the upper and lower screens 61 respectively, and gradually move towards the discharge port 104 on the inclined screen 61 for discharge. Step 5: During the screening process of the multi-stage sorting component 6, start the blower component 7. The blower component 7 blows air upward from the bottom screen 61, blowing the carbon black powder on the sorting chamber 102 and the screen 61 upward, blowing it out from the air outlet 101, and then transporting it back to the carbon black powder stirring system.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An acetylene carbon black conductive material granulating device, comprising a granulator frame (1), a feeding hopper (2) is arranged on the top of the granulator frame (1), and a compression roller (3) for relative rotation to granulate is arranged in the granulator frame (1) directly below the discharge port of the feeding hopper (2), characterized in that: the compression roller (3) comprises an outer sheath (31) capable of rotating relative to the granulator frame (1), a plurality of granulating grooves (311) are arranged on the outer circumferential surface of each outer sheath (31) in the axial and circumferential directions, and the granulating grooves (311) of the two outer sheaths (31) can periodically face each other; the inner surface of the outer sheath (31) is provided with an inner compression die (37) capable of moving in the radial direction, and the die surface shape of the inner compression die (37) is matched with the profile of the granulating groove (311); the granulator frame (1) is further provided with a driving mechanism one for driving the relative rotation of the two outer sheaths (31), and a die closing mechanism for controlling the relative movement of the inner compression die (37) to extrude the material when the granulating grooves (311) face each other; the bottom of the granulator frame (1) is provided with a multi-stage sorting assembly (6) for screening the granulated carbon black particles, and a fan assembly (7) for blowing the carbon black powder raised in the screening process back to the stirring system. The driving mechanism one comprises a motor one (4) fixed on the granulator frame (1), and a gear two (34) rotatably connected to the granulator frame (1) is fixed on the output shaft of the motor one (4). The inner surface of the outer sheath (31) is provided with an inner support frame (35), and a wire slot (351) corresponding to the inner compression die (37) is arranged on the upper surface of the inner support frame (35). The two ends of the outer sheath (31) are connected with connecting flanges (36) through bolts, the two ends of the inner support frame (35) are respectively inserted into the connecting flanges (36), a connecting sleeve (361) is fixedly arranged on the outer side of the connecting flanges (36), and the connecting sleeve (361) is rotatably connected to the granulator frame (1). The outer side of the connecting sleeve (361) is fixedly sleeved with a gear one (32), and the two gear ones (32) are meshed with each other.

2. The acetylene carbon black conductive material prilling apparatus of claim 1, wherein: The gear two (34) is meshed with one of the gear ones (32). The die closing mechanism comprises a convex roller (33) arranged in each inner support frame (35), convex roller shafts (331) are fixedly arranged on the two ends of the convex roller (33), and the convex roller shafts (331) pass through the connecting sleeve (361) and the connecting flanges (36) to be fixedly connected to the granulator frame (1). The back surface of the inner compression die (37) is fixedly provided with a guide column (39), the guide column (39) is slidably connected in the wire slot (351), springs (38) are arranged on the two sides of the inner compression die (37), the other ends of the springs (38) are arranged on the outer sheath (31), and the springs (38) act on the inner compression die (37) to make it have a tendency to reset away from the granulating groove (311). The guide column (39) is in surface abutment with the convex roller (33). ​ 3. The acetylene carbon black conductive material prilling apparatus of claim 2, wherein: ​ ​ ​ 4. The acetylene carbon black conductive material prilling apparatus of claim 3, wherein: The convex roller (33) has a convex part, and the convex part of the convex roller (33) is profiled to push the corresponding two inner pressure molds (37) to the maximum stroke at the same time only when the pelletizing grooves (311) on the two outer sheath shells (31) are completely opposite.

5. The acetylene carbon black conductive material prilling apparatus of claim 4, wherein: The multi-stage sorting assembly (6) comprises multiple layers of screens (61) arranged from top to bottom in a downward slope, and the mesh size of each layer of screens (61) decreases from top to bottom. The pelletizer rack (1) is provided with an arc-shaped groove (103). Each layer of screens (61) is slidingly connected in the arc-shaped groove (103) and can reciprocatingly swing. The pelletizer rack (1) is provided with a second driving mechanism for driving the multiple layers of screens (61) to reciprocatingly swing.

6. The acetylene carbon black conductive material prilling apparatus of claim 5, wherein: The second driving mechanism comprises a second motor (5) fixed on the pelletizer rack (1). Further comprising a helical gear ring (62) fixedly connected with the frame of the screen (61), the helical gear ring (62) is engaged with a helical gear (63), the helical gear (63) is rotatably connected to the pelletizer rack (1), the rotation shaft of the helical gear (63) is fixedly connected with a belt pulley (64), and the belt pulleys (64) are sleeved with a belt (65). The output shaft of the second motor (5) is connected with one of the belt pulleys (64).

7. The acetylene carbon black conductive material prilling apparatus of claim 6, wherein: The pelletizer rack (1) is provided with a discharge port (104) corresponding to the low end of each layer of screens (61) on the side surface. The pelletizer rack (1) is provided with a sorting cavity (102) corresponding to the screen (61) and the pressure roller (3), and the air outlet of the fan assembly (7) is opposite to the bottom of the sorting cavity (102). The pelletizer rack (1) is provided with an air outlet (101) communicating with the sorting cavity (102) on the top, and the air outlet (101) is connected to the stirring system of the carbon black powder through a pipeline.

8. The acetylene carbon black conductive material prilling apparatus of claim 7, wherein: The fan assembly (7) comprises a fan and a wind guide cover, and the wind power is configured to blow up the carbon black powder falling from the screen (61) and adhered to the screen (61) during the screening process, so that it is discharged through the air outlet (101) and recovered, but it is not enough to blow up the carbon black particles meeting the size requirements.

9. The acetylene carbon black conductive material prilling apparatus of claim 8, wherein: The discharge port of the feed hopper (2) is provided with an adjusting valve or a vibrating feeder for controlling the flow of carbon black powder entering between the pressure rollers (3).

10. A method of using the apparatus for granulating acetylene carbon black conductive material according to claim 9, characterized in that, The method comprises the following steps: Step one, pour the carbon black powder into the feed hopper (2) and enter between the pressure rollers (3) for pelletizing; Step two, start the first motor (4), the first motor (4) drives the second gear (34) to rotate and drives the first gear (32) to rotate relatively, and through the transmission of the first gear (32), the connecting sleeve (361) and the connecting flange (36) drive the inner support frame (35) and the outer sheath shell (31) to rotate relatively, and at this time the outer sheath shell (31) and the connecting sleeve (361) rotate relatively with the connecting flange (36) fixed on the pelletizer rack (1). Step three, the carbon black powder from the hopper (2) into the upper granulation tank (311), and in the drive of the outer shell (31) rotation, loaded with carbon black powder granulation tank (311) to the middle, and the other outer shell (31) on the granulation tank (311) opposite extrusion carbon black powder, at this time fixed in the inner die (37) on the guide column (39) and connecting flange (36) contact, and here relative to the push inner die (37) to move, in the granulation tank (311) for pressure granulation, two inner die (37) in the jointing granulation tank (311) for molding granulation, directly form a separate carbon black particles; Step four, the carbon black particles from the pressure roller (3) between the fall, and fall to the uppermost screen (61), start motor two (5), motor two (5) drive pulley (64) rotation, and through the transmission of the belt (65), make pulley (64) drive bevel gear (63) for forward and reverse rotation, and drive bevel gear ring (62) drive screen (61) to swing back and forth, screen the carbon black particles, different size of carbon black particles are in the upper and lower screen (61), and in the inclined screen (61) gradually to the discharge port (104) move for discharge; Step five, in the process of multi-stage sorting assembly (6) screening, start the fan assembly (7), fan assembly (7) upward blowing, from the bottom of the screen (61) upward blowing, from the air outlet (101) blowing, and retransported to the carbon black powder stirring system.

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