CN211782733U

CN211782733U - Graphite cathode material sintering furnace

Info

Publication number: CN211782733U
Application number: CN201922469494.9U
Authority: CN
Inventors: 朱仕高; 朱炜光
Original assignee: Ganluo Xinjingyuan New Material Co ltd
Current assignee: Ganluo Xinjingyuan New Material Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-27
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a graphite cathode material sintering furnace, relating to the technical field of graphite product processing equipment, comprising a hollow shell with an opening on one side, wherein a support frame is arranged on the inner side of the bottom of the shell, and an inner container is arranged on the support frame; the shell is provided with porous plates on the inner sides of the rest four sides except the bottom surface and the opening direction, and a plurality of fixed frameworks are connected between the porous plates and the shell; an insulating layer is arranged between the porous plate and the shell; the bottom of the inner container is provided with a plurality of wedge-shaped sliding grooves which are small at the top and big at the bottom along the length direction, and the top of the support frame is provided with a wedge-shaped sliding strip corresponding to the wedge-shaped sliding grooves; graphite cooling layers are arranged on the two sides of the inner container in the length direction and on the outer side of the top of the inner container. The utility model provides the high stability of heat preservation prevents that insulation material from producing not hard up and warping, has prolonged working life, and it is more convenient to change insulation material simultaneously, and graphite cooling layer external cooling circulation system can realize timely effectual heat dissipation.

Description

Graphite cathode material sintering furnace

Technical Field

The utility model belongs to the technical field of graphite product treatment facility, concretely relates to graphite negative electrode material fritting furnace.

Background

In recent years, with the rapid development of electronic devices, the demand for large-scale energy storage, electric vehicles, electric tools, portable electronic devices, and the like is increasing, and the demand for negative electrode materials is correspondingly increasing. The graphite cathode material sintering furnace is used as special sintering equipment for the cathode material of the lithium battery, and the performance of the cathode material is directly influenced, so that the final performance of the lithium battery is determined.

The existing sintering furnace is mainly characterized in that a heat-insulating layer is additionally arranged on the outer side of the furnace wall to prevent the temperature loss of the sintering furnace, and after the sintering furnace is used for a long time, heat insulating materials filled in the heat-insulating layer can be loosened, so that the phenomena of heat loss and poor temperature uniformity in the furnace are easily caused, and the product yield is finally reduced. However, the heat-insulating layer material is difficult to replace in a common sintering furnace, and the forced replacement operation is troublesome. Meanwhile, the sintering furnace operates in a high-temperature environment, a heat dissipation system and a temperature adjusting device are required to control the temperature in the furnace, but the performance of the heat dissipation system of the conventional sintering furnace in a medium-temperature heat dissipation system and a low-temperature heat dissipation system is poor.

SUMMERY OF THE UTILITY MODEL

For overcoming the technical defect that prior art exists, the utility model provides a graphite negative electrode material fritting furnace can replace the insulation material in the furnace body conveniently to added the big cooling layer of area coverage, promoted cooling efficiency.

The utility model discloses the technical scheme who adopts as follows: a graphite cathode material sintering furnace comprises a hollow shell with an opening at one side, wherein a support frame is arranged at the inner side of the bottom of the shell, and an inner container is arranged on the support frame; the shell is provided with porous plates on the inner sides of the rest four sides except the bottom surface and the opening direction, and a plurality of fixed frameworks are connected between the porous plates and the shell; an insulating layer is arranged between the porous plate and the shell; the graphite cooling layer is arranged on the two sides of the liner along the length direction and on the outer side of the top of the liner, the graphite cooling layers on different planes are internally provided with independent circulation channels, and the circulation channels are connected with a water inlet and a water outlet; the shell is characterized in that a cover plate is detachably connected to the opening direction of the shell, the cover plate is fixedly connected with the inner container, and the water inlet and the water outlet are arranged on the cover plate.

Through the technical scheme who adopts above, perforated plate and fixed skeleton that set up in the casing can promote the structural stability of heat preservation, make it be difficult to produce and warp and not hard up to prevent to appear by warping the poor phenomenon of temperature uniformity that produces with not hard up. The wedge-shaped sliding grooves and the sliding strips are arranged on the inner container and the supporting frame, so that the inner container can be easily separated from the shell, and the heat insulation material in the heat insulation layer can be conveniently replaced. The graphite cooling layer covers the two sides and the top surface of the inner container in the length direction, cold water can be introduced into the circulating pipeline through the water inlet, and the cold water is discharged from the water outlet after absorbing heat and becoming hot water, so that the cooling in the furnace body is accelerated.

Preferably, a gap is left between the graphite cooling layer and the porous plate.

Through adopting above technical scheme, the clearance can make things convenient for the inner bag to separate from the casing, increases the operating space of changing insulation material.

As a specific implementation mode, the circulating pipeline in the graphite cooling layer is S-shaped and coiled.

Through adopting above technical scheme, the S-shaped coiled circulation pipeline can cover more areas, promotes cooling efficiency.

As a specific implementation mode, a graphite seal ring is arranged at the joint of the water inlet, the water outlet and the cover plate; the water inlet is connected with a water pump through a water inlet main pipe, the water pump is connected with a water tank through a water pipe, the water outlet is connected with a refrigerator through a water outlet main pipe, and a water pipe is connected between the refrigerator and the water tank.

Through adopting above technical scheme, the graphite seal ring can guarantee the internal seal of furnace, and is able to bear high temperature. The whole cooling operation is completed by the refrigerator, the water tank and the water pump.

As a specific implementation mode, a carrier is arranged at the bottom of the inner container, and a plurality of upright posts are connected between the carrier and the inner container; a plurality of graphite electrodes are arranged on the inner wall of the inner container, and a plurality of heating pipes are arranged between the graphite electrodes arranged along the two sides of the length direction of the inner container.

By adopting the technical scheme, materials to be roasted can be placed on the carrier, and the stability of the carrier is improved by arranging the stand columns; the graphite electrode can resist high temperature and transmit energy to the heating pipe to heat the heating pipe, and heat generated by the heating pipe is radiated to the space of the inner container to finish roasting.

As a specific embodiment, the graphite electrode penetrates through the liner to be connected with a copper electrode, and the copper electrode is arranged on the cover plate; and insulating devices are arranged outside the copper electrode and the graphite electrode, and graphite sealing rings are arranged at the joints of the graphite electrode, the cover plate and the inner container.

Through adopting above technical scheme, the copper electrode can external power supply, and insulating device can guarantee the power consumption safety, and graphite sealing ring can guarantee the internal sealed of furnace, increases the thermal insulation performance.

As a specific implementation mode, the cover plate is further provided with a furnace door, sealing rings are arranged at the joints of the furnace door, the cover plate and the inner container, and the furnace door is further provided with a temperature sensor.

As a specific embodiment, the bottom of the shell is provided with a plurality of bases.

The utility model has the advantages that: the arrangement of the porous plate and the fixed framework ensures the stability of the heat-insulating layer in the using process, prevents the heat-insulating material from loosening and deforming, and prolongs the service life. When the heat insulation material needs to be replaced, the wedge-shaped sliding grooves and the sliding strips on the bottom of the inner container and the supporting frame can enable the inner container and the heat insulation layer to be easily separated, and the heat insulation material is convenient to replace. The arrangement of the graphite cooling layer, the refrigerating machine, the water pump and the water tank can realize timely and effective heat dissipation.

Drawings

Fig. 1 is a schematic side view of a cross-sectional structure according to an embodiment of the present invention.

Fig. 2 is a schematic front sectional view of an embodiment of the present invention.

Fig. 3 is a front view of an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an embodiment of the inner circulation pipeline of the graphite cooling layer of the present invention.

Fig. 5 is a schematic cross-sectional view of an embodiment of the inner circulation pipeline of the graphite cooling layer according to the present invention.

Fig. 6 is a schematic view of a cooling water circulation structure according to an embodiment of the present invention.

Reference numerals: 1-shell, 2-support frame, 21-wedge-shaped slide bar, 3-inner container, 31-wedge-shaped chute, 32-carrier frame, 33-upright column, 34-graphite electrode, 35-heating tube, 4-perforated plate, 41-fixed framework, 5-heat preservation layer, 6-graphite cooling layer, 61-water inlet, 611-water inlet main pipe, 62-water outlet, 621-water outlet main pipe, 63-water pump, 64-water pipe, 65-water tank, 66-refrigerator, 7-cover plate, 71-copper electrode and 72-furnace door.

Detailed Description

The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments after studying the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides an embodiment as shown in figures 1 and 2, a graphite cathode material sintering furnace, which comprises a hollow shell 1 with an opening on one side, wherein a support frame 2 is arranged on the inner side of the bottom of the shell 1, and an inner container 3 is arranged on the support frame 2; perforated plates 4 are arranged on the inner sides of the rest four sides of the shell 1 except the bottom surface and the opening direction, and a plurality of fixed frameworks 41 are connected between the perforated plates 4 and the shell 1; a heat-insulating layer 5 is arranged between the porous plate 4 and the shell 1; the bottom of the inner container 3 is provided with a plurality of wedge-shaped sliding grooves 31 which are small at the top and big at the bottom along the length direction, the top of the support frame 2 is provided with wedge-shaped sliding strips 21 corresponding to the wedge-shaped sliding grooves 31, and the lengths of the wedge-shaped sliding grooves and the wedge-shaped sliding strips 21 are equal to the length of the inner container 3; graphite cooling layers 6 are arranged on two sides of the inner container 3 in the length direction and on the outer side of the top of the inner container, independent circulation channels are arranged in the graphite cooling layers 6 on different planes, and the circulation channels are connected with a water inlet 61 and a water outlet 62; casing 1 opening direction releasable connection has apron 7, apron 7 and inner bag 3 fixed connection, water inlet 61 and delivery port 62 set up on the apron.

When the sintering furnace works, materials to be roasted are placed in the inner container, the furnace door is closed, the power supply is switched on to start roasting operation, cooling water is required to be used for temperature regulation after intracranial temperature is raised to a specified roasting temperature, the water inlet and the water outlet are opened simultaneously, the cooling water is pressed in from the water inlet, flows in a circulating channel in the graphite cooling layer and flows out from the water outlet to rapidly take away heat, so that the temperature is regulated; after the roasting time reaches the specified time, the power supply is turned off, and the cooling is continued until the temperature is cooled to the room temperature. When the heat preservation in the casing needs to be changed, the cover plate is detached from the casing, the cover plate can be connected with the inner container and the graphite cooling layer, the cover plate is pulled out from the support frame by utilizing the wedge-shaped sliding grooves and the sliding strips, and the heat preservation material between the casing and the porous plate is convenient to change. After the replacement is finished, the liner, the graphite cooling layer and the cover plate can return to the original position by using the wedge-shaped sliding groove and the sliding strip for positioning, and then the cover plate and the shell are connected.

The shell and the cover plate can be made of heat-resistant stainless steel materials; the inner container and the graphite cooling layer can be made of graphite, so that the inner container is high-temperature resistant, the volume change is not large, and the strength of the inner container is enhanced along with the temperature rise; the supporting frame, the wedge-shaped sliding strip, the porous plate and the fixed framework can be made of corundum materials, and the high-temperature-resistant corrosion-resistant strength is high. The heat-insulating layer can be made of graphite felt, and has the advantages of high temperature resistance, good stability, and good heat insulation and heat preservation performance. The water inlet and the water outlet are made of heat-resistant stainless steel materials.

The porous plate and the fixed framework are mainly used for fixing the heat-insulating layer; the support frame is used for bearing the load of the inner container and the materials to be roasted in the inner container; the wedge-shaped sliding grooves and the sliding strips are configured to easily separate the porous plate, the heat-insulating layer, the supporting frame and the shell when the heat-insulating material is replaced, so that the heat-insulating material is convenient to replace, and the wedge-shaped sliding grooves and the sliding strips have the functions of limiting and positioning and prevent the inner container from deviating during assembly. The inner container has heat insulation and sealing functions.

The graphite cooling layer is distributed on the two sides of the inner container and the outer side of the top surface, the graphite cooling layer on each plane is provided with an independent circulating channel, and each circulating channel is connected with a water inlet and a water outlet. The circulation channel is formed integrally at a high temperature when the graphite cooling layer is manufactured, and the structure of the circulation channel is shown in fig. 4 and 5. Cold water enters from the water inlet and flows in the circulating channel, absorbs heat and is changed into hot water, and then the hot water is discharged from the water outlet, so that the cooling operation is completed.

Preferably, a gap is left between the graphite cooling layer 6 and the porous plate 4.

The gap distance can be 1-5 mm, when the heat insulation material is replaced, the porous plate, the heat insulation layer and the shell are conveniently separated from the sintering furnace, and the operation space for replacing the heat insulation material is increased.

As shown in fig. 4, the circulation passage in the graphite cooling layer 6 is preferably S-shaped coiled.

The S-shaped coiled circulation pipeline can cover more area, and the cooling efficiency is improved.

As a specific implementation manner, graphite seal rings are arranged at the joints of the water inlet 61, the water outlet 62 and the cover plate 7; the water inlet 61 is connected with a water pump 63 through a water inlet manifold 611, the water pump 63 is connected with a water tank 65 through a water pipe 64, the water outlet 62 is connected with a refrigerator 66 through a water outlet manifold 621, and the water pipe 64 is connected between the refrigerator 66 and the water tank 65, as shown in fig. 3 and 6.

The water pump can be selected from GD150-44 pipeline pumps, the water tank and the water pipe can be made of stainless steel materials, and the refrigerator can be selected from a box type refrigerating unit or a screw type refrigerating unit. As shown in fig. 3, the water inlet main pipe and the water outlet main pipe are respectively connected with a plurality of water inlets and water outlets. And the circulating channel, the water pump, the water tank and the refrigerator in the graphite cooling layer are connected through pipelines to form a circulating loop for water cooling operation.

As shown in fig. 2, as a specific embodiment, a rack 32 is disposed at the bottom of the inner container 3, and a plurality of columns 33 are connected between the rack 32 and the inner container 3; a plurality of graphite electrodes 34 are arranged on the inner wall of the inner container 3, and a plurality of heating pipes 35 are arranged between the graphite electrodes 34 arranged along the two sides of the length direction of the inner container.

The carrier and the upright post can be made of corundum materials and can be used for placing materials to be roasted. The graphite electrode is a high-temperature-resistant graphite conductive material which is commonly used in industry, the heating pipe can be a silicon-carbon rod, and the graphite electrode is high-temperature-resistant, fast in temperature rise and small in high-temperature deformation. The graphite electrode transmits electric energy to the heating tube, so that the heating tube is heated and heated, the electric energy is converted into heat energy, and the heat energy is radiated into the whole inner container.

In a specific embodiment, the graphite electrode 34 penetrates through the liner 3 to be connected with a copper electrode 71, and the copper electrode 71 is arranged on the cover plate 7; insulating devices are arranged outside the copper electrode 71 and the graphite electrode 34, and graphite sealing rings are arranged at the joints of the graphite electrode 34, the cover plate 7 and the inner container 3.

The copper electrode can be a tungsten-copper alloy electrode, has high strength and is not deformed at high temperature and is connected with a power supply. The insulating device can be a corundum ceramic tube or a boron nitride insulating tube. When roasting is needed, a power supply is switched on, current is transmitted to the graphite electrode through the copper electrode at the top, then transmitted to the plurality of heating pipes connected in parallel, and finally a loop is completed through the graphite electrode at the bottom and the copper electrode.

As a specific embodiment, the cover plate 7 is further provided with a furnace door 72, the joints of the furnace door 72, the cover plate 7 and the inner container 3 are provided with sealing rings, and the furnace door 72 is further provided with a temperature sensor.

The outer layer of the furnace door can be made of heat-resistant stainless steel materials, and the inner layer can be made of graphite materials. The sealing ring can be a graphite sealing ring, is high temperature resistant, and improves the sealing property. The temperature sensor can monitor the temperature change condition in the furnace in real time and is connected with the temperature adjusting device to provide support for temperature adjustment. The temperature adjusting device is the prior art and is not described herein.

As a specific embodiment, the bottom of the housing 1 is provided with a plurality of seats.

The base can be made of cast iron materials and is used for supporting the sintering furnace body.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.

Claims

1. A graphite cathode material sintering furnace is characterized in that: the device comprises a hollow shell (1) with an opening at one side, wherein a support frame (2) is arranged at the inner side of the bottom of the shell (1), and an inner container (3) is arranged on the support frame (2); the perforated plate (4) is arranged on the inner sides of the rest four sides of the shell (1) except the bottom surface and the opening direction, and a plurality of fixed frameworks (41) are connected between the perforated plate (4) and the shell (1); a heat insulation layer (5) is arranged between the porous plate (4) and the shell (1); a plurality of wedge-shaped sliding grooves (31) which are small in top and large in bottom are formed in the bottom of the inner container (3) along the length direction, wedge-shaped sliding strips (21) corresponding to the wedge-shaped sliding grooves (31) are arranged at the top of the supporting frame (2), and the lengths of the wedge-shaped sliding grooves and the wedge-shaped sliding strips (21) are equal to the length of the inner container (3); graphite cooling layers (6) are arranged on two sides and the outer side of the top of the inner container (3) in the length direction, independent circulation channels are arranged in the graphite cooling layers (6) on different planes, and the circulation channels are connected with a water inlet (61) and a water outlet (62); casing (1) opening direction releasable connection has apron (7), apron (7) and inner bag (3) fixed connection, water inlet (61) and delivery port (62) set up on apron (7).

2. The sintering furnace for graphite anode materials according to claim 1, characterized in that: and a gap is reserved between the graphite cooling layer (6) and the porous plate (4).

3. The sintering furnace for graphite anode materials according to claim 1, characterized in that: the circulation pipeline in the graphite cooling layer (6) is S-shaped coiled.

4. The sintering furnace for graphite anode materials according to claim 1, characterized in that: a graphite seal ring is arranged at the joint of the water inlet (61), the water outlet (62) and the cover plate (7); the water inlet (61) is connected with a water pump (63) through a water inlet header pipe (611), the water pump (63) is connected with a water tank (65) through a water pipe (64), the water outlet (62) is connected with a refrigerator (66) through a water outlet header pipe (621), and the water pipe (64) is connected between the refrigerator (66) and the water tank (65).

5. The sintering furnace for graphite anode materials according to claim 1, characterized in that: a goods carrier (32) is arranged at the bottom of the inner container (3), and a plurality of upright posts (33) are connected between the goods carrier (32) and the inner container (3); a plurality of graphite electrodes (34) are arranged on the inner wall of the inner container (3), and a plurality of heating pipes (35) are arranged between the graphite electrodes (34) arranged along the two sides of the length direction of the inner container.

6. The sintering furnace for graphite anode materials according to claim 5, characterized in that: the graphite electrode (34) penetrates through the inner container (3) and is connected with a copper electrode (71), and the copper electrode (71) is arranged on the cover plate (7); insulating devices are arranged outside the copper electrode (71) and the graphite electrode (34), and graphite sealing rings are arranged at the joints of the graphite electrode (34), the cover plate (7) and the inner container (3).

7. The sintering furnace for graphite anode materials according to claim 1, characterized in that: the oven door is characterized in that an oven door (72) is further arranged on the cover plate (7), sealing rings are arranged at the joints of the oven door (72), the cover plate (7) and the inner container (3), and a temperature sensor is further arranged on the oven door (72).

8. The sintering furnace for graphite anode materials according to claim 1, characterized in that: the bottom of the shell (1) is provided with a plurality of bases.