CN-122015488-A - Graphitization furnace body filling method and graphitization furnace body filling device

CN122015488ACN 122015488 ACN122015488 ACN 122015488ACN-122015488-A

Abstract

A graphitization furnace body filling method comprises the following steps of filling and compacting a first layer of first heat preservation material in a furnace body bottom cavity, placing and positioning a crucible one by one on the heat preservation material, filling and compacting a second heat preservation material in a gap of an outer area of the crucible, filling and compacting a negative carbon black material in the inner cavity of the crucible, spreading and compacting a layer of first heat preservation material on a structure formed in the step 4 and the step 5, repeatedly filling, repeatedly executing the operations of the step 3 to the step 6 to form a multilayer graphitization structure, placing and positioning a resistor barrel on the first heat preservation material paved on the uppermost layer, filling and compacting a resistor barrel outside the resistor barrel, filling and compacting the second heat preservation material in the outer area of the resistor barrel, filling and compacting the resistor barrel, wherein the filling height is limited to be flush with the end of the furnace body in the inner cavity of the resistor barrel, circularly executing the stage, and realizing uninterrupted continuous material supply through a switching bin replacing mechanism.

Inventors

CHEN YIJIE
CHANG GAOFENG
ZOU MENGHUA

Assignees

广东一恒机电科技有限公司

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (10)

1. The graphitization furnace body filling method is characterized by comprising the following steps of: Filling the bottom layer of heat preservation material, namely filling and compacting a first layer of first heat preservation material in a cavity at the bottom of the furnace body, Positioning the crucibles, namely placing and positioning the crucibles one by one on the first layer of first heat preservation material, Filling the outer insulating material of the crucible, namely filling and compacting the second insulating material in a gap of the outer area of the crucible, wherein the filling height is limited to be level with the upper end of the crucible, Filling negative carbon black, namely filling and compacting the negative carbon black in the inner cavity of the crucible, wherein the filling height is limited to be level with the upper end of the crucible, Laying isolation heat preservation materials, namely laying and compacting a layer of first heat preservation materials on the structural body formed in the step 4 and the step 5, Repeating the filling step, repeating the operations of the steps 3 to 6 to form a multi-layer graphitized structure, Positioning a resistor charging basket, namely placing and positioning the resistor charging basket on a first heat preservation material paved on the uppermost layer, Filling and compacting a second heat preservation material in the outer area of the resistor charging basket, And filling and compacting the resistor material in the inner cavity of the resistor material barrel, wherein the filling height is limited to be level with the end part of the furnace body. The process is circularly executed at the stage, and the material is switched to realize uninterrupted continuous feeding through a switching bin replacing mechanism; The method comprises the steps of starting a switching bin replacement mechanism according to the requirement of the next material to be filled, namely, a new bin is transported, namely, the switching bin filled with the next material to be filled is lifted to a working platform through a bin body lifting machine and is transported to a working channel or an avoidance area through a double-row switching chain conveyor, b, docking and positioning, namely, the switching bin to be worked is transported to a docking position below a discharging bin, high-precision positioning and locking are achieved through a concave frame guide rail and a docking in-place sensor, c, feeding is conducted, namely, a telescopic docking head is docked with a split docking gate valve at the bottom of the switching bin, a bolt is driven by a docking driving mechanism, a valve body is opened, the material is communicated to the discharging bin, d, an empty bin is switched, namely, when the material of the current switching bin is about to be emptied, the current empty bin is moved to the avoidance area through the double-row switching chain conveyor, and the switching bin of the next material is synchronously transferred to the working channel, and seamless connection is achieved.
2. A filling device using the filling method according to claim 1, comprising: the furnace body is internally provided with a plurality of bins, the filling device is arranged above the furnace body and is used for spreading materials to the bins in the furnace body, The filling device comprises The material spreading mechanism comprises a discharging bin, a discharging pipe and a material spreading auger, wherein the discharging bin is communicated with the material spreading auger through the discharging pipe, and the material spreading auger is used for spreading materials in the bin; The conversion bin is arranged as a hollow bin body and is used for being communicated with the discharge bin and supplying materials to the discharge bin and is fixed on the fixed platform, The fixed platform is used for bearing the conversion bin and is positioned on the working platform, A working platform is arranged, the working platform is provided with a conveying path for bearing and moving the conversion bin, the conveying path is provided with a conversion bin replacing mechanism for driving the conversion bin, the device comprises, The double-row switching chain conveyor is arranged on the working platform and is divided into a channel section and an avoidance area, and a feeding end is in butt joint with the bin body lifting machine and is used for transferring or temporarily storing the switching bin; the bin body hoister is used for hoisting the conversion bin from the ground to the working platform, The butt joint chain conveyor is fixed on the fixed platform, is in butt joint with the double-row switching chain conveyor, drives the conversion bin to move, and transfers the conversion bin to the position below the discharge bin; the telescopic butt joint is arranged at the top of the discharging bin, can vertically lift and is used for butt joint with the conversion bin.
3. A filling device according to claim 2, wherein, The feeding end of the bin body elevator is in butt joint with the chain conveyor in the elevator and is used for vertically lifting the conversion bin to a working platform.
4. The filling device according to claim 2, wherein a split type butt joint gate valve is provided, and the split type butt joint gate valve comprises a valve body fixed at the bottom of the conversion bin, a butt joint driving and positioning mechanism, wherein the conversion bin is sealed above the valve body, and the lower part of the valve body is in butt joint with the telescopic butt joint head for communicating the conversion bin with the discharge bin.
5. The filling device of claim 4, wherein the valve body comprises a plug board and a valve housing, the valve housing is matched with the outlet of the conversion bin, the plug board is fixedly connected with the positioning mechanism, and the butt joint drive drives the positioning mechanism to move so as to drive the plug board to move, thereby opening or closing the valve body.
6. The filling device according to claim 5, wherein the positioning mechanism comprises a pin, a pin driver and a pin linkage seat, the pin corresponds to a positioning hole provided corresponding to the insertion plate, the pin driver drives the pin to move up and down, and the pin is inserted into the positioning hole or separated from the positioning hole, and the pin linkage seat is connected with the docking driving mechanism.
7. The filling device of claim 6, wherein the docking drive mechanism comprises a drive cylinder, a guide rod and a fixed seat, the drive cylinder drives the fixed seat to move along the guide rod, the fixed seat is fixed with a bolt linkage seat, the bolt linkage seat moves along the guide rod, the bolt linkage seat is positioned between the two guide rods, and the two guide rods are connected with the two drive cylinders and the two fixed seats in a distributed manner.
8. The filling device according to claim 1, wherein the switching bin replacing mechanism further comprises a concave frame, the butt-joint chain conveyor comprises two conveying chain plates arranged in parallel, the driving chain wheels drive the conveying chain plates to move, the supporting rails are arranged below the conveying chain plates and are contacted with the conveying chain plates, and when the fixed platform is conveyed to the two conveying chain plates by the double-row switching chain conveyor, the conveying chain plates convey the fixed platform to the concave frame; The concave frame is provided with guide rails which are respectively positioned above the conveying chain plates and contacted with the upper part of the fixed platform to guide the fixed platform.
9. The filling device according to claim 8, further comprising an entrance detection sensor configured as a diffuse reflection type photoelectric sensor disposed inside the entrance section of the concave frame, and an induction plate for detecting a side surface of the fixed platform.
10. The filling device according to claim 8, further comprising an alignment sensor arranged as an opposite-type photoelectric sensor and arranged on the inner side of the concave frame, wherein a light shielding plate is arranged at the tail of the fixed platform, and when the fixed platform is in place, the light beam of the opposite-type photoelectric sensor is completely shielded, and locking is triggered.

Description

Graphitization furnace body filling method and graphitization furnace body filling device Technical Field The invention relates to the field of graphite battery equipment, in particular to a filling device and a bin changing method for square furnace body filling of a battery, which can realize continuous, clean and accurate filling of different powder materials. Background In the process of filling the powder material into the furnace body, the filling operation not only requires stable feeding and uniform spreading, but also must ensure the continuity and the cleanliness of the bin replacement process. However, the existing filling device generally has the problems of low bin replacement efficiency, inaccurate butt joint positioning, insufficient dust control and the like in practical application. The traditional single-bin circulation filling mode needs to interrupt filling operation after each conversion bin is emptied, so that the equipment enters a shutdown bin-changing state. During downtime, the operator is required to remove the empty bin and re-dock the new bin under the discharge bin, a process which typically takes a long time and is labor intensive. Therefore, the whole system cannot continuously work in the warehouse-changing stage, so that the temperature field and the pressure field in the furnace body are periodically disturbed, and the powder distribution and the stability of the final process are influenced. In order to improve the bin exchanging efficiency, the technical scheme provides that a plurality of conversion bins are connected in series on a chain so that the conversion bins sequentially enter the working position. However, the serial transmission mode has the structural characteristics of single linear sequence and irreversible switching, so that the system cannot flexibly adjust the sequence of the bin bodies according to the process requirements of different materials, and parallel operation between the exit of the bin bodies and the entry of a new bin cannot be realized. With the increase of the length and the bearing capacity of the chain, the elastic deformation accumulation of the chain transmission can further cause the attenuation of the butting precision, and the problems of increased deviation, abrasion of a sealing surface, leakage of materials and the like are easy to occur after the long-time running. There are also proposals to install the valve actuator directly at the bottom of the conversion bin, making it an integral conversion bin structure. Although this approach can simplify the communication process between the bin body and the discharge bin to some extent, the integral structure also results in a significant increase in the weight of the bin body. In the moving process of the conversion bin, the dead weight is increased, so that higher driving load and stability requirements are provided for the conveying mechanism, meanwhile, the actuating mechanism moves frequently along with the bin body, is easily affected by vibration and cable dragging, and the reliability is reduced. More importantly, the warehouse bodies of different materials or different batches are required to be provided with respective actuating mechanisms, so that the universality of the system is reduced and the operation and maintenance cost is increased. In addition, the powder has the characteristics of easy drifting and easy airflow disturbance, and the dust is easy to escape when the sealing surface of the valve area is separated from the instant during bin replacement. If negative pressure dust collection or follow-up collection means are not synchronously applied, the working environment is polluted, dust abrasion of equipment is increased, and safety risks can be brought. Therefore, how to effectively control dust propagation during the bin change process is another key problem that is difficult to solve by the existing filling device. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides the graphitized furnace body filling method and the graphitized furnace body filling device which are compact in structure, convenient to replace and easy to maintain, so that the powder filling device can realize quick replacement of the bin without stopping the filling process, high-precision sealing and positioning are kept in the process of replacing the bin and butting, dust escaping is effectively reduced, and the whole system can keep stable operation under the working condition of long period and high strength. The technical scheme is that 1. The graphitization furnace body filling method is characterized by comprising the following steps: Filling the bottom layer of heat preservation material, namely filling and compacting a first layer of first heat preservation material in a cavity at the bottom of the furnace body, Positioning the crucibles, namely placing and positioning the crucibles one by one on the first layer of first heat preservation m