CN220187418U - Furnace body structure, heat treatment furnace and battery production system - Google Patents

Abstract

The utility model relates to a furnace body structure, a heat treatment furnace and a battery production system, wherein the furnace body structure comprises a furnace body; the furnace cover is matched and connected with the furnace body to jointly define a furnace chamber; the electrode is at least partially connected to the furnace cover in a matching way and extends into the furnace chamber; wherein, the furnace body is provided with a feed hole communicated with the hearth. The electrode is connected with the furnace cover in a matching way and stretches into the furnace chamber, so that the temperature of the part, close to the electrode, of the furnace cover is very high, the material entering into the furnace chamber from the feeding hole can be far away from the furnace cover as far as possible through arranging the feeding hole communicated with the furnace chamber on the furnace body, the peripheral temperature of the feeding hole is reduced, the chemical reaction generated by the contact of the material and the furnace cover is reduced, and the scouring of the material to the furnace cover is reduced, so that the service life of the furnace cover can be prolonged.

Description

Furnace body structure, heat treatment furnace and battery production system

Technical Field

The utility model relates to the technical field of heat treatment furnaces, in particular to a furnace body structure, a heat treatment furnace and a battery production system.

Background

The heat treatment furnace is a heat treatment furnace that provides a treatment environment for materials, and is widely used in various production fields such as graphitization furnaces, smelting furnaces, reaction furnaces, etc., and the heat treatment furnace generally provides a heating environment.

Graphitization furnaces are commonly used for producing negative electrode graphite materials of batteries, and in general, a central through hole is formed in the middle of a furnace cover, a graphite positive electrode is inserted into the furnace, and materials enter the furnace through the central through hole in the furnace cover, so that the service life of the furnace cover is influenced.

Disclosure of Invention

In view of the problems, the utility model provides a furnace body structure, a heat treatment furnace and a battery production system, which can relieve the problem that the service life of a furnace cover is influenced due to the fact that materials are discharged through a central through hole in the furnace cover.

In a first aspect, the present utility model provides a furnace structure comprising:

a furnace body;

the furnace cover is matched and connected with the furnace body to jointly define a furnace chamber; and

the electrode is at least partially connected to the furnace cover in a matching way and extends into the furnace chamber;

wherein, the feed port with furnace intercommunication has been seted up to the stove body, and feed port and electrode interval set up.

According to the furnace body structure, the electrodes are connected to the furnace cover in a matching mode and extend into the furnace hearth, so that the temperature of the furnace cover, which is close to the electrode, is high, the feeding holes communicated with the furnace hearth are formed in the furnace body, and the feeding holes are arranged at intervals with the electrodes, so that materials entering the furnace hearth from the feeding holes can be kept away from the furnace cover as far as possible, the peripheral temperature of the feeding holes is reduced, chemical reactions caused by the contact of the materials and the furnace cover are reduced, scouring of the materials to the furnace cover is reduced, and the service life of the furnace cover can be prolonged.

Secondly, in some cases, if the feeding hole is arranged on the furnace cover, the reactant generated by the reaction of the material and the refractory material on the inner side of the furnace cover, or the scouring material generated by scouring the inner wall of the furnace cover by the material, can enter the furnace cavity along with the material, but the furnace body structure in the embodiment of the utility model reduces the chemical reaction generated by the contact of the material and the furnace cover, and reduces the scouring of the material to the furnace cover, thereby reducing the reactant or scouring material and improving the quality of the furnace product.

In some embodiments, the feed hole includes a first opening in communication with the furnace chamber, the first opening on an interior side of the furnace body.

Under some conditions, if the feeding hole is arranged in the middle of the furnace cover, the material vertically and downwards directly enters the hearth, and the inlet of the core high-temperature area is usually smaller, so that the material can be gathered above the inlet in a stacking manner, volatile substances generated by heating the material can not be timely discharged easily, even the risk of leakage of some smoke is caused, and the reliability of the furnace body structure is influenced. In the furnace body structure provided by the embodiment of the utility model, the first opening is arranged on the inner side surface of the furnace body, so that materials can enter the hearth from the side, and can horizontally or obliquely enter the core high-temperature area, so that the materials are not easy to gather in a stacking manner, volatile substances generated by heating the materials are easier to timely discharge, the risk of smoke leakage is reduced while coking is reduced, and the reliability of the furnace body structure is improved.

In addition, through setting up first opening and offer on the medial surface of stove body, be favorable to the material to get into core temperature area more, improve product quality.

In some embodiments, the furnace body comprises a furnace shell;

the feeding hole is arranged on the furnace shell; and/or

The furnace body also comprises a structure layer group arranged on the inner side of the furnace shell, and the feeding holes penetrate through the structure layer group.

Because the furnace shell has simple structure, the mode of feeding Kong Kaishe on the furnace shell is also simple, and the manufacturing process is simplified. The setting of structure group set can further optimize the reaction in the stove, and can avoid the heat to the stove outer covering diffusion in the stove, in addition, can also improve the structural strength of stove outer covering, consequently set up the feed port in the stove outer covering and run through the structure group set, can make the setting of feed port adaptation structure group set, reduce the influence that structure group set up, improve structure group set reliability. The feeding holes can independently penetrate through the structure layer group, so that holes are not required to be formed in the furnace shell, and the technical process of forming the feeding holes is simplified.

In some embodiments, the structural layer group includes an insulation layer.

Therefore, the heat dissipation in the furnace body can be reduced, the surface temperature of the furnace shell is lower, and the energy conservation and the scalding risk can be reduced.

In some embodiments, the feed hole comprises a guide section, which is inclined from the outside of the furnace body to the inside of the furnace body, in a direction away from the furnace lid.

Therefore, the material can quickly enter the hearth under the action of gravity and move towards the core high-temperature area.

In some embodiments, the number of feed holes is a plurality, and all feed holes are arranged centrally and symmetrically along the center line of the furnace body.

So, can make the material get into furnace simultaneously from a plurality of feed holes in, halving the material, make the feeding even to product quality and uniformity have been promoted.

In some embodiments, the electrode comprises a first electrode and a second electrode, the first electrode is coupled to the furnace cover, the second electrode is coupled to the furnace body, and a first space is formed between the second electrode and the top surface of the furnace cover;

the ratio of the aperture of the feed hole to the first interval is in the range of 1/3-1/18.

Therefore, the aperture of the feeding hole is moderate, on one hand, the furnace body is relatively thickened, so that materials entering from the feeding hole are reliably supported, on the other hand, the feeding hole can smoothly pass through the materials, and the feeding speed is improved.

In some embodiments, the end of the furnace body facing the furnace cover is arranged at intervals with the furnace cover so as to form a cavity in the hearth;

the feed port is arranged at one end of the furnace body close to the furnace cover and is communicated with the cavity.

Through setting up the cavity, on the one hand can receive the material, on the other hand can provide the space of discharging for the volatile material that produces after the material heats.

In some embodiments, the cavity is filled with an inert gas.

In some cases, if the feeding hole is disposed in the middle of the furnace cover, the feeding hole can be in contact with the first electrode to reduce the temperature of the first electrode, and when the feeding hole is disposed on the furnace body, the contact area between the feeding hole and the first electrode is reduced, so that the temperature of the first electrode cannot be reliably reduced.

In some embodiments, the furnace body further comprises a heating cavity formed in the hearth, the heating cavity being in communication with an end of the cavity remote from the furnace cover;

the side of the furnace body facing the furnace cover is provided with a guide surface, and two ends of the guide surface are respectively connected with the feeding hole and the heating cavity.

The two ends of the guide surface are respectively connected with the feeding hole and the heating cavity, so that materials entering from the feeding hole can be accurately guided to the heating cavity, and the materials can be fully utilized, and the heating efficiency is improved.

In some embodiments, the guide surface comprises an inclined surface inclined from the feed hole towards the heating chamber.

Through setting up the inclined plane, can make the guide of material more smooth and easy.

In some embodiments, the furnace cover is provided with a mounting hole communicated with the hearth, and the electrode is matched and connected with the mounting hole;

a sealing structure is arranged between the mounting hole and the electrode.

The sealing structure is used for easily realizing the sealing between the furnace cover and the electrode, and the sealing is reliable, thereby being beneficial to reducing the probability of oxidation of materials in the furnace body, being beneficial to prolonging the service life of the furnace body structure and improving the quality of the materials.

In a second aspect, the present utility model also provides a heat treatment furnace, including the furnace body structure of any of the above embodiments.

According to the heat treatment furnace, the electrodes are connected to the furnace cover in a matching mode and extend into the furnace hearth, so that the temperature of the furnace cover, which is close to the electrode, is high, the furnace body is provided with the feeding holes communicated with the furnace hearth, and the feeding holes are arranged at intervals with the electrodes, so that materials entering the furnace hearth from the feeding holes can be kept away from the furnace cover as far as possible, the peripheral temperature of the feeding holes is reduced, the chemical reaction caused by the contact of the materials and the furnace cover is reduced, and the scouring of the materials to the furnace cover is reduced, so that the service life of the furnace cover can be prolonged.

Secondly, in some cases, if the feeding hole is arranged on the furnace cover, the reactant generated by the reaction of the material and the refractory material on the inner side of the furnace cover, or the scouring material generated by scouring the inner wall of the furnace cover by the material, can enter the furnace cavity along with the material, but the furnace body structure in the embodiment of the utility model reduces the chemical reaction generated by the contact of the material and the furnace cover, and reduces the scouring of the material to the furnace cover, thereby reducing the reactant or scouring material and improving the quality of the furnace product.

In some embodiments, the heat treatment furnace is a graphitization furnace.

In some embodiments, the heat treatment furnace further comprises a feed device comprising a hopper and a feed tube, the feed tube connecting the hopper to the feed hole.

Through setting up feed arrangement and including hopper and inlet pipe for feed arrangement's simple structure, the unloading is smooth and easy.

In some embodiments, the heat treatment furnace further comprises a valve coupled to the feed tube.

The valve is arranged on the feeding pipe, so that the feeding of the feeding pipe can be timely adjusted, materials can be well controlled to enter the hearth according to requirements, and risks caused by manual operation are reduced.

In a third aspect, the present utility model also provides a battery production system, including the heat treatment furnace of any of the above embodiments.

According to the battery production system, the electrodes are connected to the furnace cover in a matching mode and extend into the furnace hearth, so that the temperature of the furnace cover, which is close to the electrode, is high, the feeding holes communicated with the furnace hearth are formed in the furnace body, and the feeding holes are arranged at intervals with the electrodes, so that materials entering the furnace hearth from the feeding holes are kept away from the furnace cover as far as possible, the peripheral temperature of the feeding holes is reduced, chemical reactions caused by the contact of the materials and the furnace cover are reduced, scouring of the materials to the furnace cover is reduced, and the service life of the furnace cover can be prolonged.

Secondly, in some cases, if the feeding hole is arranged on the furnace cover, the reactant generated by the reaction of the material and the refractory material on the inner side of the furnace cover, or the scouring material generated by scouring the inner wall of the furnace cover by the material, can enter the furnace cavity along with the material, but the furnace body structure in the embodiment of the utility model reduces the chemical reaction generated by the contact of the material and the furnace cover, and reduces the scouring of the material to the furnace cover, thereby reducing the reactant or scouring material and improving the quality of the furnace product.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

fig. 1 is a schematic structural view of a heat treatment furnace according to one or more embodiments.

Fig. 2 is a schematic structural view of a heat treatment furnace according to another embodiment or embodiments.

Reference numerals in the specific embodiments are as follows:

a furnace body structure 100;

a furnace body 10;

the furnace shell 12, the structural layer group 13, the insulating layer 131, the heat insulating layer 132 and the guide surface 14 are arranged on the furnace shell 12, the guide section 112 and the vertical section 113;

a furnace cover 20;

a mounting hole 21 and a smoke exhaust hole 22;

an electrode 30;

a first electrode 31, a second electrode 32;

a furnace 40;

a cavity 41 and a heating cavity 42;

a sealing structure 50;

a heat treatment furnace 200;

a feeding device 210;

hopper 211, feed tube 212, first tube segment 2121, second tube segment 2122, valve 213;

a first included angle A1;

a second included angle A2;

a first pitch L1;

pore diameter D1.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present utility model, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, 1 and/or 2 may indicate: there are three cases where 1 alone exists, 1 and 2 exist at the same time, and 2 exist alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present utility model, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The graphitizing furnace is mainly used for graphitizing and purifying carbon materials such as carbon fibers, high-heat-conductivity graphite materials, battery cathode materials and the like and carbon composite materials.

Among the negative electrode materials of the lithium ion battery, the graphite carbon negative electrode material has wide sources and low price, and is always the main type of the negative electrode material; the carbonaceous material is a main raw material of the graphite-type lithium battery cathode material, carbon atoms of the carbonaceous material are irregularly arranged, and the carbonaceous material can only show a crystal structure of graphite after being recrystallized and rearranged through high-temperature heat treatment in a kiln such as a graphitization furnace, so that the graphite has a plurality of excellent properties of graphite, such as remarkably improved electrical conductivity and thermal conductivity, better chemical and thermal stability, reduced impurities, reduced hardness, easier machining and the like.

The continuous graphitization furnace is commonly used for graphitization treatment of battery cathode materials and generally comprises a furnace body and a furnace cover, wherein the furnace body is enclosed to form a furnace cavity, an opening is formed above the furnace body, the furnace cover is arranged at the opening, a central through hole is formed in the middle of the furnace cover, and a graphite positive electrode extends into a cavity in the furnace from the central through hole. The graphite positive electrode is used for introducing current into the furnace, and the strong current generates arc discharge at the lower end of the graphite positive electrode through gas, and smelting is performed by utilizing heat generated by the arc.

The graphite positive electrode stretches into the cavity in the furnace from the central through hole of the furnace cover, the temperature of the inner side of the furnace cover is overhigh, and materials are fed from the central through hole, so that the materials react with refractory materials on the inner side of the furnace cover under the action of high temperature, for example, the refractory materials comprise alumina, silica and the like, the materials react with the alumina and the silica in a replacement mode, the chemical properties of the furnace cover are changed, and in addition, the materials scour the inner wall of the furnace cover, so that the service life of the furnace cover is reduced.

Based on the above consideration, in order to alleviate the problem of reduced service life of the furnace cover, the embodiment of the utility model designs a furnace body structure, wherein the feeding hole is formed in the furnace body instead of the furnace cover, so that the material entering the cavity in the furnace from the feeding hole is kept away from the furnace cover as far as possible, the chemical reaction generated by the contact of the material and the furnace cover is reduced, and the scouring of the material to the inner wall of the furnace cover is reduced, so that the service life of the furnace cover is prolonged.

The furnace body structure provided in the embodiment of the utility model is applied to a heat treatment furnace, the heat treatment furnace can be, but not limited to, a graphitization furnace, a smelting furnace, a reaction furnace and the like, and the heating mode of the heat treatment furnace is not limited to the heating mode mentioned in the above case, and can also be infrared heating, thermal radiation heating and the like. Those skilled in the art can flexibly apply the furnace body structure according to the embodiment of the present utility model to various types of heat treatment furnaces according to the actions and effects thereof.

The furnace body structure provided by the embodiment of the utility model is described in detail below.

Referring to FIG. 1, a furnace structure 100 is provided according to some embodiments of the present utility model, and includes a furnace body 10, a furnace cover 20, and an electrode 30. The furnace cover 20 is mated with the furnace body 10 to cooperatively define a furnace chamber 40. The electrode 30 is at least partially attached to the furnace cover 20 and extends into the furnace chamber 40. Wherein, the furnace body 10 is provided with a feeding hole 11 communicated with the hearth 40, and the feeding hole 11 and the electrode 30 are arranged at intervals.

The furnace body structure 100 is a structure forming a core high temperature region of the heat treatment furnace, which provides an internal environment for heat treatment of materials. Typically, the process environment provided by the furnace body 10 is isolated from the atmosphere.

The furnace body 10 has an inner cavity with a core high temperature region of the furnace body structure 100, mainly forming an internal environment of the furnace body structure 100. The furnace body 10 is generally a vertical cylindrical structure with an opening at one end, and the furnace cover 20 is covered at the opening of the furnace body 10 to be matched and connected with the furnace body 10.

The furnace body 10 includes, but is not limited to, a furnace shell 12, the furnace shell 12 typically being made of a metallic material, being strong and lightweight. A heat-insulating structure may be provided in the furnace shell 12.

The furnace cover 20 is usually movably connected with the furnace body 10, and the furnace body 10 is opened or closed by moving the furnace cover 20, so that the materials in the furnace body 10 and the structures in the furnace body 10 can be cleaned, overhauled and the like conveniently. The movable connection mode of the furnace cover 20 and the furnace body 10 may be that the furnace cover 20 is rotatable relative to the furnace body 10, or that the furnace cover 20 is linearly movable relative to the furnace body 10, or that the furnace cover 20 is detachable relative to the furnace body 10.

The electrode 30 is a device capable of generating an electric field. A pair of first and second electrodes 31 and 32 is generally included, the first and second electrodes 31 and 32 being opposite and spaced apart from each other to form an electric field therebetween. In the embodiment of the present utility model, the first electrode 31 is a positive electrode, and the second electrode 32 is a negative electrode.

The first electrode 31 is vertically arranged in a rod shape, and the second electrode 32 is horizontally arranged in a ring shape, and an electric field in an umbrella shape or an inverted cone shape can be generated between the first electrode and the second electrode so as to form a core high-temperature area in an umbrella shape or an inverted cone shape. Specifically, when the material passes through the electric field, the material can generate heat under the action of self resistance, so that the material can be heated, and the material can flow to the discharge end of the furnace body structure 100 through the annular ring of the second electrode 32. The second electrode 32 is designed in the shape of a ring, the anode ring opening of which can allow the material to be heated to pass through to the discharge side of the furnace structure 100.

The first electrode 31 of the electrode 30 is coupled to the furnace cover 20 and extends into the furnace chamber 40. The electrode 30 and the furnace cover 20 may be connected by, but not limited to, forming a mounting hole 21 in the middle of the furnace cover 20 to allow the electrode 30 to pass through and connect, or forming a connecting part on the inner side of the furnace cover 20 to connect the electrode 30.

The feed holes 11 are used to provide a passage for material into the furnace 40. The extension path of the feed hole 11 may be a straight line, or may be a curved line or a broken line.

Because the electrode 30 is connected to the furnace cover 20 in a matching way and stretches into the furnace chamber 40, the temperature of the part of the furnace cover 20 close to the electrode 30 is very high, and the material entering the furnace chamber 40 from the material inlet 11 can be far away from the furnace cover 20 as far as possible by arranging the material inlet 11 and the electrode 30 at intervals on the furnace body 10, so that the peripheral temperature of the material inlet 11 is reduced, the chemical reaction caused by the contact of the material with the furnace cover 20 is reduced, and the scouring of the material to the furnace cover 20 is reduced, so that the service life of the furnace cover 20 can be prolonged.

Secondly, in some cases, if the feed hole 11 is disposed on the furnace cover 20, the reactant generated by the reaction of the material with the refractory material on the inner side of the furnace cover 20, or the scouring material generated by scouring the inner wall of the furnace cover 20 with the material, will also enter the furnace chamber 40, so that the chemical reaction generated by the contact of the material with the furnace cover 20 is reduced, and the scouring of the material to the furnace cover 20 is reduced, thereby reducing the reactant or scouring material and improving the quality of the furnace product.

According to some embodiments of the present utility model, referring to fig. 1, a feed hole 11 is provided at one end of the furnace body 10 near the furnace cover 20.

In this way, the distance between the material and the electrode 30 can be shortened, so that the material can be rapidly close to the electrode 30, in addition, the material can be automatically discharged under the action of gravity and is arranged at one end close to the furnace cover 20, and the space loss in the furnace chamber 40 can be reduced, so that the space of the reaction zone is enlarged.

According to some embodiments of the present utility model, referring to fig. 1, the feeding hole 11 includes a first opening 111 communicating with the furnace chamber 40, and the first opening 111 is formed on the inner side surface of the furnace body 10.

The inner side surface is an inner surface of a side wall of the furnace body 10, and the side wall of the furnace body 10 refers to any side wall in a direction intersecting with a center line of the furnace body 10.

In some cases, if the feeding hole 11 is disposed in the middle of the furnace cover 20, the material vertically enters the furnace 40 directly downward, and the inlet of the core high-temperature area is usually smaller, so that the material can be accumulated above the inlet in a stacking manner, and volatile materials generated by heating the material can not be discharged in time easily, and even some risks of leakage of smoke are caused, which affects the reliability of the furnace structure 100. In the furnace body structure 100 of the embodiment of the utility model, the first opening 111 is formed on the inner side surface of the furnace body 10, so that materials can enter the hearth 40 from the side, and can enter the core high-temperature area horizontally or obliquely, so that the materials are not easy to gather in a stacking manner, thereby enabling volatile substances generated by heating the materials to be more easily discharged in time, reducing coking, simultaneously reducing the risk of smoke leakage, and improving the reliability of the furnace body structure 100.

In addition, the first opening 111 is formed on the inner side surface of the furnace body 10, so that materials can enter the core temperature area more easily, and the product quality is improved.

Further, referring to fig. 1, the feeding hole 11 may be directly opened on the side wall of the furnace body 10, so that the first opening is opened on the inner side surface of the furnace body 10. In other embodiments, the feed holes 11 may also extend from the top surface to the inner side surface of the furnace body 10.

It should be noted that the top surface of the furnace body 10 is the outer surface of the wall on which the furnace cover 20 is attached.

In some embodiments of the present utility model, referring to fig. 1, a furnace body 10 includes a furnace shell 12, and a feed hole 11 is formed in the furnace shell 12.

Because the furnace shell 12 has a simple structure, the mode of opening the feeding hole 11 on the furnace shell 12 is also simple, and the manufacturing process is simplified.

Specifically, the feed holes 11 may be opened in the side wall of the furnace shell 12. The first opening 111 may also be formed directly on the inner side of the furnace shell 12.

In other embodiments, the furnace body 10 includes a furnace shell 12, and further includes a structure layer group 13 disposed on the inner side of the furnace shell 12, and the feed hole 11 is formed in the furnace shell 12 and penetrates through the structure layer group 13.

The arrangement of the structure layer group 13 can further optimize the reaction in the furnace, and can avoid the diffusion of heat in the furnace to the furnace shell 12, and in addition, can also improve the structural strength of the furnace shell 12, so that the feed hole 11 is arranged on the furnace shell 12 and penetrates through the structure layer group 13, the feed hole 11 can be adapted to the arrangement of the structure layer group 13, the influence on the arrangement of the structure layer group 13 is reduced, and the reliability of the structure layer group 13 is improved.

Specifically, the feed holes 11 may be opened in the side wall of the furnace shell 12 and the side wall of the structure layer group 13. Of course, when the furnace shell 12 has a top wall, the feed holes 11 may also be formed in the top wall of the furnace shell 12 and extend to the inner side surface through the top surface of the structure layer group 13. The first opening 111 is provided on the inner side of the structure group 13.

In other embodiments, the furnace body 10 includes a furnace shell 12, and further includes a structure layer group 13 disposed on the inner side of the furnace shell 12, and the feeding hole 11 is formed on the structure layer group 13.

That is, the feed holes 11 can independently penetrate through the structure layer group 13, so that no holes are needed to be formed in the furnace shell 12, and the technical process of forming the feed holes 11 is simplified.

Specifically, the structure layer group 13 is disposed on the inner side of the furnace shell 12 and forms an opening, the furnace cover 20 is covered on the opening, the structure layer group 13 is exposed on the outer side of the furnace cover 20, and the feeding hole 11 extends from the top surface where the opening of the structure layer group 13 is located to the inner side surface. The first opening 111 is provided on the inner side of the structure group 13.

More specifically, the manner in which the feed holes 11 penetrate the structural layer group 13 includes, but is not limited to, pre-arranging pipes, forming the feed holes 11 in the pipes, and forming the structural layer group 13 outside the pipes.

Further, the structural layer group 13 comprises an insulation layer.

Thus, the heat dissipation in the furnace body 10 can be reduced, the surface temperature of the furnace shell 12 can be lower, and the energy conservation and the scalding risk can be reduced.

Specifically, the structural layer group 13 includes an insulating layer 131 and a heat insulating layer 132, wherein the insulating layer 131 is located between the furnace shell 12 and the heat insulating layer 132.

The insulating layer 131 may be made of an inorganic material, and the insulating layer 132 may be made of a carbonaceous material.

Further, the number of layers of the structure layer group 13 may be plural or single.

In order to better guide the material from the feed opening 11 into the furnace chamber 40, according to some embodiments of the utility model, referring to fig. 2, the feed opening 11 comprises a guide section 112, which guide section 112 is arranged obliquely from the outside of the furnace body 10 to the inside of the furnace body 10, in a direction away from the furnace lid 20.

The guide section 112 is at least a part of a structure capable of guiding the material to move into the furnace body 10 in the extending direction of the feed hole 11.

In this manner, the material is allowed to quickly enter the furnace 40 under the force of gravity and move toward the core high temperature region.

Specifically, when the feed hole 11 is directly opened on the side wall of the furnace body 10, the guide section 112 extends from the outer side surface of the furnace body 10 to the inner side surface of the furnace body 10, that is, the feed hole 11 is integrally inclined.

When the feeding hole 11 extends from the top surface to the inner side surface of the furnace body 10, the feeding hole 11 further includes a vertical section 113, one end of the vertical section 113 extends to the top surface of the furnace body 10, the other end is connected to one end of the guiding section 112, the other end of the guiding section 112 extends to the inner side surface of the furnace body 10, and the guiding section 112 is inclined with respect to the vertical section 113.

According to some embodiments of the present utility model, referring to fig. 1, the number of the feeding holes 11 is plural, and all the feeding holes 11 are arranged in a central symmetry along the center line of the furnace body 10.

In this way, the materials can enter the hearth 40 from the plurality of feeding holes 11 at the same time, the materials are equally divided, and the feeding is uniform, so that the product quality and consistency are improved.

Specifically, the feed holes 11 include, but are not limited to, two, four, or eight.

Referring to fig. 1, an electrode 30 includes a first electrode 31 and a second electrode 32 according to some embodiments of the present utility model. The first electrode 31 is coupled to the furnace cover 20, and the second electrode 32 is coupled to the furnace body 10. A first distance L1 is formed between the top surface of the cover 20 and the top surface of the second electrode 32. The ratio of the aperture D1 of the feed hole 11 to the first pitch L1 is in the range of 1/3 to 1/18.

By setting the D1/L1 range to 1/3-1/18, the aperture of the feed hole 11 can be made moderate, on the one hand, the furnace body 10 is made relatively thick, so that the material entering from the feed hole 11 is reliably supported, on the other hand, the feed hole 11 can smoothly pass through the material, and the feed speed is increased.

Alternatively, the ratio of the aperture D1 of the feed hole 11 to the first pitch L1 is in the range of 1/6 to 1/18.

According to some embodiments of the present utility model, referring to fig. 1, an end of the furnace body 10 facing the furnace cover 20 is spaced from the furnace cover 20 to form a cavity 41 in the hearth 40. The feeding hole 11 is arranged at one end of the furnace body 10 close to the furnace cover 20 and is communicated with the cavity 41.

By providing the cavity 41, on the one hand, material can be received and, on the other hand, a discharge space can be provided for volatile substances generated after heating of the material.

Specifically, the furnace cover 20 or the furnace body 10 is further provided with a smoke exhaust hole 22 communicated with the cavity 41. The smoke vent 22 may be a straight channel, a curved channel, etc.

For treating materials that produce volatile materials (e.g., graphitized carbonaceous materials), the vent holes 22 are positioned to allow the volatile materials to flow out, reducing the extent of coking of the volatile materials within the furnace structure 100.

In general, the exhaust hole 22 is externally communicated with an exhaust gas treatment system, and is used for treating and then evacuating volatile substances flowing out of the exhaust hole 22, so as to reduce pollution to the atmosphere. As for the specific arrangement of the exhaust gas treatment system, there is no limitation in the embodiment of the present utility model, and those skilled in the art can perform conventional arrangements.

Specifically, the side of the structure layer group 13 facing the furnace cover 20 is spaced from the furnace cover 20 to form a cavity 41. A heating cavity 42 is also formed in the middle of the structure layer group 13, and the first electrode 31 penetrates through the cavity 41 and extends into the heating cavity 42.

Further, the cavity 41 is filled with an inert gas.

The inert gas may include helium, neon, argon, krypton, xenon, radon, and the like.

In some cases, if the feed hole 11 is provided at the middle of the furnace cover 20, it can be in contact with the first electrode 31 to reduce the temperature of the first electrode 31, and when the feed hole 11 is provided at the furnace body 10, the contact area with the first electrode 31 is reduced, so that the temperature of the first electrode 31 cannot be reliably reduced, and therefore, by filling the inert gas into the cavity 41, the inert gas can be sufficiently brought into contact with the first electrode 31, thereby reducing the temperature of the first electrode 31 in the cavity 41.

Further, the furnace body 10 further includes a heating chamber 42 formed in the hearth 40, the heating chamber 42 communicating with an end of the cavity 41 remote from the furnace cover 20. The furnace body 10 has a guide surface 14 on a side facing the furnace cover 20, and both ends of the guide surface 14 are respectively connected to the feed hole 11 and the heating chamber 42.

The guide surface 14 is a surface that has a tendency to guide the material in a certain direction.

By providing the guide surface 14 with both ends respectively connecting the feed hole 11 and the heating chamber 42, the material entering from the feed hole 11 can be guided to the heating chamber 42 accurately, and therefore, the material can be fully utilized, and the heating efficiency is improved.

Specifically, the guide surface 14 includes an inclined surface inclined from the feed hole 11 toward the heating chamber 42.

Through setting up the inclined plane, can make the guide of material more smooth and easy.

In other embodiments, the guide surface 14 may be a stepped surface, a curved surface, or the like, and is not particularly limited.

In the embodiment of the present utility model, the guide surface 14 may be an inclined surface as a whole or may be an inclined surface only in part.

Specifically, the side of the set of structural layers 13 facing the furnace cover 20 has a guide surface 14.

Specifically, the set of structural layers 13 enclose a heating chamber 42. More specifically, the heating chamber 42 has a cylindrical shape, and the central axis of the heating chamber 42 coincides with the central axis of the furnace body 10.

According to some embodiments of the present utility model, referring to fig. 1, a furnace cover 20 is provided with a mounting hole 21 communicating with a furnace chamber 40, and an electrode 30 is coupled to the mounting hole 21. A sealing structure 50 is provided between the mounting hole 21 and the electrode 30.

The sealing structure 50 is used to seal the furnace cover 20 and the electrode 30.

The sealing structure 50 is used for easily realizing the sealing between the furnace cover 20 and the electrode 30, and the sealing is reliable, thereby being beneficial to reducing the probability of oxidation of materials in the furnace body, being beneficial to prolonging the service life of the furnace body structure 100 and improving the quality of the materials.

Specifically, the sealing structure 50 may be a sealing ring sleeved on the electrode 30, and the sealing ring may be disposed in the mounting hole 21. The electrode 30 may also be a sealing wool that fills between the electrode 30 and the wall of the mounting hole 21. The electrode 30 may also be a sealing weld or a hot melt sealant, filling between the electrode 30 and the wall of the mounting hole 21. Of course, the sealing of the electrode 30 may be a combination of the above. The arrangement and specific materials of the electrodes 30 are not limited in the embodiment of the present utility model.

In the process of working the heat treatment furnace, the furnace cover 20 correspondingly heats up to a certain extent, and the electrode 30 can be made of a temperature-resistant material. For example, plastics such as rubber and silica gel, which are well resistant to temperature, or metals such as carbon steel are not particularly limited.

In one embodiment of the present utility model, the furnace body structure 100 includes a furnace body 10, a furnace cover 20, and an electrode 30. The furnace cover 20 is mated with the furnace body 10 to cooperatively define a furnace chamber 40. The electrode 30 comprises a first electrode 31 and a second electrode 32, the first electrode 31 is matched and connected with the furnace cover 20 and at least partially extends into the furnace chamber 40, the second electrode 32 is matched and connected with the furnace body 10, and the first electrode 31 and the second electrode 32 are arranged at intervals. The furnace body 10 includes a furnace shell 12 and a structure layer group 13 disposed inside the furnace shell 12, and a plurality of feed holes 11 connected with the furnace 40 and penetrating the furnace shell 12 and the structure layer group 13 are formed on the side wall of the furnace body 10. All the feed holes 11 are arranged in a central symmetry along the central line of the furnace body 10 and are spaced apart from the first electrode 31. Each feed hole 11 is inclined from the outside of the furnace body 10 to the inside of the furnace body 10 in a direction away from the furnace cover 20.

In addition, a heat treatment furnace 200 is also provided in the embodiment of the present utility model, which includes the furnace body structure 100 in the above embodiment. The heat treatment furnace 200 has all the technical features and advantages of the above embodiments, and are not described herein.

Referring to fig. 1, a heat treatment furnace 200 is a graphitization furnace according to some embodiments of the present utility model. Specifically, the heat treatment furnace 200 is a vertical continuous graphitizing furnace.

Referring to fig. 1, according to some embodiments of the present utility model, the heat treatment furnace 200 further includes a feeding device 210. The feeding device 210 includes a hopper 211 and a feeding pipe 212, and the feeding pipe 212 connects the hopper 211 with the feeding hole 11.

The hopper 211 refers to a combination of a holding container and a transport assembly for filling material for a blanking operation.

By arranging the feeding device 210 to comprise the hopper 211 and the feeding pipe 212, the feeding device 210 is simple in structure and smooth in discharging.

Further, the hopper 211 comprises a stainless steel hopper.

Because the stainless steel hopper is made of stainless steel materials, the iron content in the stainless steel is low, so that the scrap iron generated by scraping materials is reduced in the material conveying process, and the product quality is further improved.

In other embodiments, the hopper 211 may comprise a hopper of other metal or alloy materials.

Further, the feed tube 212 comprises a stainless steel feed tube.

Based on the same reason, through using stainless steel inlet pipe, can be in the material transportation process, reduced the iron fillings volume that produces through the scraping of material, and then promote product quality.

In other embodiments, the feed tube 212 may also include other metal or alloy feed tubes.

In other embodiments, hopper 211 comprises a stainless steel hopper and feed tube 212 comprises a stainless steel feed tube.

Referring to FIG. 1, according to some embodiments of the present utility model, the heat treatment furnace 200 further includes a valve 213, wherein the valve 213 is disposed at the feed pipe 212.

The valve 213 is used to open or close the feed pipe 212, and may also be used to regulate the discharge flow rate of the feed pipe 212.

The valve 213 is arranged on the feeding pipe 212, so that the feeding of the feeding pipe 212 can be timely adjusted, the materials can be well controlled to enter the hearth 40 according to the requirements, and the risk brought by manual operation is reduced.

Specifically, the valve 213 is a gate valve, and the gate valve discharging mode is simple, convenient to switch and easy to operate. In other embodiments, valve 213 may also be a regulator valve.

More specifically, the type of gate valve may be a manual gate valve, a pneumatic gate valve, a star unloader, an automatic feeder, or the like.

According to some embodiments of the present utility model, referring to fig. 1, the feeding device 210 may include a plurality of feeding pipes 212, and the plurality of feeding pipes 212 are all in communication with the hopper 211. One end of each feed pipe 212, which is far away from the hopper 211, is communicated with a corresponding feed hole 11.

In this way, the overall structure of the feeding device 210 can be simplified while satisfying uniform discharging.

Further, the hopper 211 comprises a plurality of sub-silos independent from each other, each sub-silo being in communication with a respective feed pipe 212. In this manner, the blanking of each feed tube 212 can be controlled individually.

Referring to fig. 1, the feed tube 212 may have a circular cross-sectional shape according to some embodiments of the present utility model.

The feeding pipe 212 with a circular cross section is beneficial to smooth blanking and good in sealing performance.

In other embodiments, the cross-sectional shape of the feed tube 212 may be rectangular or other shapes.

According to some embodiments of the present utility model, referring to fig. 1, the feed pipe 212 includes a first pipe section 2121 and a second pipe section 2122, wherein one end of the first pipe section 2121 is communicated with the hopper 211, the other end of the first pipe section 2122 is communicated with one end of the second pipe section 2122, and the other end of the second pipe section 2122 is communicated with the feed hole 11.

Wherein, the second pipe section 2122 and the furnace body 10 have a first included angle A1, and the range of A1 is 0-90 degrees. Preferably, A1 ranges from 45 degrees to 90 degrees.

So can make the material fall to feed port 11 fast, accelerated the unloading speed.

The first tube segment 2121 and the second tube segment 2122 have a second included angle A2 therebetween, and A2 ranges from 0 degrees to 90 degrees. Preferably, A1 ranges from 45 degrees to 90 degrees.

By providing the first tube segment 2121 and the second tube segment 2122 with the second angle A2 therebetween, the size of the feeder 210 can be reduced and the heat treatment furnace 200 can be made more compact.

In addition, the embodiment of the utility model also provides a battery production system, which comprises the heat treatment furnace 200. The heat treatment furnace 200 is applied to a battery production system and may be, but is not limited to, a negative electrode material for producing a battery.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (17)

1. A furnace structure, comprising:

a furnace body;

the furnace cover is matched and connected with the furnace body to jointly define a furnace chamber; and

the electrode is at least partially connected to the furnace cover in a matching way and extends into the hearth;

wherein, the furnace body offer with the feed port of furnace intercommunication, just the feed port with the electrode interval sets up.

2. The furnace structure according to claim 1, wherein the feed hole includes a first opening communicating with the furnace chamber, the first opening being opened on an inner side surface of the furnace body.

3. The furnace body structure of claim 1, wherein the furnace body comprises a furnace shell;

the feeding hole is formed in the furnace shell; and/or

The furnace body further comprises a structure layer group arranged on the inner side of the furnace shell, and the feeding holes penetrate through the structure layer group.

4. A furnace structure according to claim 3, wherein the set of structural layers comprises an insulating layer.

5. The furnace body structure according to any one of claims 1 to 4, wherein the feed hole includes a guide section provided obliquely from an outer side of the furnace body toward an inner side of the furnace body, the guide section being provided obliquely in a direction away from the furnace cover.

6. The furnace body structure according to any one of claims 1 to 4, wherein the number of the feed holes is plural, and all the feed holes are arranged in a central symmetry along the center line of the furnace body.

7. The furnace body structure according to any one of claims 1 to 4, wherein the electrode comprises a first electrode and a second electrode, the first electrode is coupled to the furnace cover, the second electrode is coupled to the furnace body, and a first space is formed between a top surface of the furnace cover and a top surface of the second electrode;

the ratio of the aperture of the feeding hole to the first interval is 1/3-1/18.

8. The furnace body structure according to any one of claims 1 to 4, wherein an end of the furnace body facing the furnace cover is spaced apart from the furnace cover to form a cavity in the furnace chamber;

the feeding hole is formed in one end, close to the furnace cover, of the furnace body and is communicated with the cavity.

9. The furnace structure according to claim 8, wherein the cavity is filled with an inert gas.

10. The furnace body structure of claim 8, wherein the furnace body further comprises a heating cavity formed within the furnace hearth, the heating cavity in communication with an end of the cavity remote from the furnace cover;

the side of the furnace body facing the furnace cover is provided with a guide surface, and two ends of the guide surface are respectively connected with the feeding hole and the heating cavity.

11. The furnace structure according to claim 10, wherein the guide surface includes an inclined surface inclined from the feed hole toward the heating chamber.

12. The furnace structure according to any one of claims 1 to 4, wherein the furnace cover is provided with a mounting hole communicated with the furnace chamber, and the electrode is coupled to the mounting hole;

and a sealing structure is arranged between the mounting hole and the electrode.

13. A heat treatment furnace comprising the furnace body structure according to any one of claims 1 to 12.

14. The heat treatment furnace according to claim 13, wherein the heat treatment furnace is a graphitization furnace.

15. The heat treatment furnace according to claim 13 or 14, further comprising a feeding device including a hopper and a feeding pipe, the feeding pipe connecting the hopper and the feeding hole.

16. The heat treatment furnace of claim 15, further comprising a valve coupled to the feed tube.

17. A battery production system comprising the heat treatment furnace according to any one of claims 13 to 16.