Feeding device and graphitization furnace

Abstract

The utility model relates to a feeding device and a graphitization furnace. The feeding device is used for feeding materials to a reaction bin and comprises a stock bin and a feeding assembly. A containing cavity used for containing materials is formed in the stock bin. The feeding assembly is located below the stock bin and comprises a feeding part, a discharging pipe and a switch assembly, the switch assembly is arranged between one end of the feeding part and the containing cavity and communicates with or blocks a channel between the feeding part and the containing cavity, the other end of the feeding part communicates with the discharging pipe, the discharging pipe is arranged at an angle relative to the feeding part, and the feeding part is arranged in the containing cavity. A discharge hole is formed in one end, far away from the feeding piece, of the blanking pipe and faces the reaction bin. According to the feeding device provided by the embodiment of the invention, firstly, the material from the material bin is uniformly conveyed through the material conveying piece, and then the material from the material conveying piece is quickly conveyed into the reaction bin through the discharging pipe, so that the material can uniformly enter the reaction bin, and the consistency of material reaction can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of feeding device, in particular to a feeding device and graphitization furnace. BACKGROUND

[0002] The heat treatment furnace is a furnace structure for providing a treatment environment for materials, which is widely used in various production fields, such as graphitization furnace, smelting furnace, reaction furnace, etc. The heat treatment furnace can usually provide a heating environment.

[0003] Taking the graphitization furnace as an example, the feeding device and the reaction chamber are important components of the graphitization furnace. The feeding device continuously supplies materials to the reaction chamber, and the materials react in the reaction chamber. As the reaction proceeds, the materials in the reaction chamber are continuously consumed, so new materials need to be continuously added to the reaction chamber. The speed and quantity of the materials entering the reaction chamber will affect the quality of the products generated after the reaction. CONTENT OF THE INVENTION

[0004] In view of the above problems, the present application provides a feeding device and a graphitization furnace, which can improve the problem that the materials cannot uniformly enter the reaction chamber, resulting in uneven quality of the final products.

[0005] In a first aspect, the present application provides a feeding device for feeding materials to a reaction chamber. The feeding device includes a material bin, a feeding assembly, and a switching assembly. The material bin has a storage cavity inside for storing materials. The feeding assembly is located below the material bin and includes a feeding member and a discharge pipe. One end of the feeding member is connected to the storage cavity through the switching assembly, which communicates or blocks the passage between the feeding member and the storage cavity. The other end of the feeding member is in communication with the discharge pipe, wherein the discharge pipe is arranged at an angle relative to the feeding member, and the end of the discharge pipe away from the feeding member is provided with a discharge opening facing the reaction chamber.

[0006] In the technical solution of the present application, the materials from the material bin are first uniformly transported by the feeding member, and then the materials from the feeding member are rapidly transported to the reaction chamber through the discharge pipe, which is beneficial to the uniform entry of the materials into the reaction chamber and can improve the consistency of the material reaction.

[0007] In some embodiments, the opening direction of the discharge opening is arranged downward along the direction of gravity, and the discharge pipe is arranged at an angle relative to the direction of gravity and forms an included angle a, wherein 0°≤a≤50°.

[0008] In this way, the speed of the materials falling along the discharge pipe can be controlled by designing the included angle a of the discharge pipe relative to the direction of gravity, which enhances the flexibility of the arrangement of the discharge pipe and enables the feeding device to be applicable to materials with different falling speeds, thereby expanding the application range of the feeding device.

[0009] In some embodiments, the feeding member comprises a water-cooled screw conveyor, one end of the water-cooled screw conveyor is communicated with the hopper, the other end of the water-cooled screw conveyor is communicated with the discharging pipe, the water-cooled screw conveyor is arranged in a horizontal direction and feeds in the horizontal direction.

[0010] In this way, the water-cooled screw conveyor can cool and feed the material at the same time, so as to reduce the damage of the feeding member caused by the high temperature of the material or other safety accidents, and improve the safety of feeding the material. In addition, the water-cooled screw conveyor can feed different types of materials, and has a compact structure and is easy to maintain.

[0011] In some embodiments, the feeding device further comprises a weight detection member arranged on the hopper and used for detecting the material in the accommodating cavity.

[0012] In this way, the weight of the hopper without material and the weight of the hopper with material are measured by the weight detection member, and the weight of the material in the hopper can be calculated, so that the user can monitor the weight of the material in the hopper in real time and assist in calculating the production capacity of the whole feeding device according to the measured value.

[0013] In some embodiments, the feeding device further comprises a temperature detection member arranged on the hopper, and at least part of the temperature detection member extends into the accommodating cavity.

[0014] In this way, the initial temperature of the material entering the feeding device can be measured by the temperature detection member, so as to adjust the cooling degree of the water-cooled screw conveyor, cool the material to a suitable state, and feed the material.

[0015] In some embodiments, the switch assembly further comprises a first switch arranged between the hopper and the feeding member to close or communicate the channel between the hopper and the feeding member.

[0016] In this way, when the horizontal feeding machine is not running, the first switch is in a closed state to block the material in the hopper from directly entering the horizontal feeding machine, so as to reduce the probability that a large amount of material accumulates in the feeding port of the horizontal feeding machine and blocks the horizontal feeding machine to cause the horizontal feeding machine to fail to run normally. In addition, when the water-cooled feeding member is abnormal, the first switch can be closed to block the material in the hopper from entering the water-cooled feeding member, so as to facilitate the maintenance of the water-cooled feeding member.

[0017] In some embodiments, the switch assembly further comprises a second switch arranged between the feeding member and the discharging pipe to close or communicate the channel between the feeding member and the discharging pipe.

[0018] In this way, when the material conveyed by the feeding member reaches the vicinity of the discharging pipe, the second switch can be opened, so that the material conveyed by the feeding member can smoothly enter the discharging pipe. In addition, when the reaction chamber has an abnormality, the second switch can be closed in time to block the material from entering the discharging pipe and entering the reaction chamber through the discharging pipe.

[0019] In some embodiments, the material bin and the feeding member are both made of stainless steel.

[0020] In this way, the content of magnetic substances in the material bin and the feeding member can be reduced, thereby reducing the probability of magnetizing the material in the material bin and the feeding member.

[0021] In some embodiments, the material bin is provided with a first opening and a second opening, both of which communicate the inside and outside of the accommodating cavity, one of the first opening and the second opening is configured as a material injection channel, and the other is configured as a maintenance channel.

[0022] In this way, the way of injecting material into the material bin and the way of maintaining the material bin are simplified.

[0023] In some embodiments, the material bin is provided with an air inlet portion which is selectively communicated with the accommodating cavity and is used for injecting inert gas.

[0024] In this way, the inert gas such as nitrogen can dilute the air in the accommodating cavity and has a sealing effect, thereby reducing the probability of the air in the accommodating cavity entering the reaction chamber together with the material, reducing the probability of the air oxidizing the material in the reaction chamber, and improving the quality of the product produced by the final reaction.

[0025] In some embodiments, the material bin is configured as a pressure-resistant container, and the pressure-resistant container has a pressure bearing range of -0.1 MPa to 0.5 MPa.

[0026] In this way, the probability of the pressure bearing capacity of the material bin being reduced due to the inert gas such as nitrogen being injected into the material bin, or even the probability of the wall of the material bin cracking, can be reduced, and the pressure bearing capacity of the material bin is improved.

[0027] In some embodiments, the material feeding device further comprises a material level detection member which is located in the accommodating cavity and is used for detecting the position of the material.

[0028] In this way, the material level detection member can accurately and timely detect the amount of material in the accommodating cavity, and when the amount of material is insufficient, a signal can be sent to the alarm or a signal can be sent to the material supplementing mechanism to timely supply material to the material bin.

[0029] In a second aspect, the application provides a graphitization furnace, which comprises a reaction chamber and the material feeding device in the above embodiments, and the material feeding device is communicated with the reaction chamber and is used for feeding material into the reaction chamber.

[0030] Therefore, the material in the hopper is uniformly delivered by the feeding member first, and then the material from the feeding member is rapidly delivered into the reaction chamber through the discharging pipe, which is beneficial to the uniform entry of the material into the reaction chamber and improves the consistency of the material reaction.

[0031] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0032] 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 accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, in the attached drawings, like reference numerals refer to same or similar functionalities throughout the several views. In the drawings:

[0033] Figure 1 The structure schematic diagram of the graphitization furnace according to one or more embodiments.

[0034] The reference numerals in the detailed description are as follows:

[0035] 1000, the graphitization furnace;

[0036] 100, the feeding device; 10, the hopper; 11, the containing cavity; 12, the first opening; 13, the second opening; 14, the air inlet; 20, the feeding assembly; 21, the feeding member; 22, the discharging pipe; 221, the discharge port; 30, the weight detection member; 40, the temperature detection member; 50, the first switch; 60, the second switch; 200, the reaction chamber. DETAILED DESCRIPTION

[0037] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0038] Unless otherwise defined, 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 application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of the present application, if the technical terms "first", "second" and the like appear, they are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0040] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiments, nor is it necessarily independent or alternative embodiments to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0041] In the description of the embodiments of the present application, if the term "and / or" appears, it is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, if it appears, the character " / " in this paper generally represents a "or" relationship between the front and rear associated objects.

[0042] In the description of the embodiments of the present application, if the term "multiple" appears, it means more than two (including two), and similarly, "multiple groups" means more than two groups (including two groups), and "multiple pieces" means more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present application, if the technical terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0044] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, if the technical terms "mounting", "connection", "connection", "fixing" and the like appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0045] Carbon atoms of carbonaceous materials are irregularly arranged. Only through high-temperature heat treatment above 2600 DEG C, recrystallization of carbon atoms occurs, and carbon atoms are re-ordered, so that the graphite crystal structure can be presented, so as to have excellent properties such as conductivity, thermal conductivity and chemical and thermal stability of graphite. Therefore, it is necessary to convert carbonaceous materials into artificial graphite materials by using a graphitization furnace, so as to apply the graphite materials to the production and preparation of battery negative materials.

[0046] When the carbonaceous materials react in the reaction chamber of the graphitization furnace, the carbonaceous materials are continuously consumed as the reaction proceeds, so that new carbonaceous materials need to be added to the reaction chamber to continue the reaction. Whether the materials entering the reaction chamber are uniformly discharged will affect the quality of the products formed after the reaction of the materials.

[0047] In order to improve the quality of the products formed after the reaction of the materials, the feeding device provided in the application is arranged at an angle with respect to the feeding member. The materials from the hopper are first uniformly transported in the horizontal direction by the feeding member, and then rapidly transported into the reaction chamber by the discharge pipe, which is beneficial to the uniform and rapid entry of the materials into the reaction chamber, so that the materials are uniformly reacted in the reaction chamber.

[0048] The feeding device provided in the embodiments of the application can be applied to a graphitization furnace, and can also be applied to, but is not limited to, a smelting furnace, a reaction furnace and other heat treatment furnaces. The heating method of the heat treatment furnace is not limited to using the oppositely arranged positive electrode and negative electrode to form a heating electric field to heat the materials, infrared heating, thermal radiation heating and the like. The person skilled in the art can flexibly apply the feeding seat to various types of heat treatment furnaces according to the functions and effects of the feeding seat in the embodiments of the application.

[0049] Please refer to Figure 1 Some embodiments of the application provide a feeding device 100 for feeding materials to a reaction chamber 200. The feeding device 100 comprises a hopper 10 and a feeding assembly 20. The hopper 10 is internally provided with a containing cavity 11 for containing materials; the feeding assembly 20 is located below the hopper 10, and comprises a feeding member 21, a discharge pipe 22 and a switching assembly. The switching assembly is arranged between one end of the feeding member 21 and the containing cavity 11, and communicates or blocks the passage between the feeding member 21 and the containing cavity 11. The other end of the feeding member 21 communicates with the discharge pipe 22, wherein the discharge pipe 22 is arranged at an angle with respect to the feeding member 21. One end of the discharge pipe 22 away from the feeding member 21 is provided with a discharge port 221, and the discharge port 221 faces the reaction chamber 200.

[0050] The hopper 10 is used to temporarily contain materials and continuously provide materials for the feeding assembly 20. The shape of the hopper 10 can be, but is not limited to, a cylindrical shape.

[0051] The feeding member 21 can receive the material from the material bin 10 and can deliver the received material to the delivery pipe 22 in a horizontal direction or other direction. The connection between the feeding member 21 and the material bin 10 can be, but is not limited to, threaded connection or clamping connection. The connection between the feeding member 21 and the delivery pipe 22 can also be, but is not limited to, threaded connection or clamping connection. The delivery pipe 22 and the feeding member 21 are arranged at an angle.

[0052] The reaction bin 200 refers to a position where a reaction occurs in the production process of a material. For example, for the graphitization furnace 1000, the carbonaceous material reacts in the reaction bin 200 of the graphitization furnace 1000 and finally generates a graphite material. The feeding device 100 can add the material required for the reaction to the reaction bin 200 to facilitate the continuous and efficient reaction.

[0053] Exemplarily, the feeding device 100 is located above the reaction bin 200, and the discharge port 221 of the delivery pipe 22 of the feeding device 100 is in communication with the reaction bin 200. When it is required to deliver the material to the reaction bin 200, the feeding device 100 is started. The material in the material bin 10 flows into the feeding member 21, and the feeding member 21 delivers the material in a horizontal direction. When the material is delivered to the delivery pipe 22, because the delivery pipe 22 is arranged at an angle relative to the feeding member 21, the material can fall into the reaction bin 200 along the delivery pipe 22.

[0054] In this way, the material from the material bin 10 is first uniformly delivered by the feeding member 21, and then the material from the feeding member 21 is quickly delivered to the reaction bin 200 through the delivery pipe 22, which is beneficial to the uniform entry of the material into the reaction bin 200 and can improve the consistency of the material reaction.

[0055] In some embodiments, the opening direction of the discharge port 221 is arranged downward along the gravity direction, the delivery pipe 22 is arranged at an angle relative to the gravity direction and forms an included angle a, where 0°≤a≤50°. The value of a can be 0°, 5°, 10°, 20°, 30°, 50° and any value between adjacent two values.

[0056] In different embodiments, when the delivery pipe 22 is arranged at different angles relative to the gravity direction when delivering the same material, the speed of the material moving along the delivery pipe 22 also changes.

[0057] In this way, the speed of the material falling along the delivery pipe 22 can be controlled by designing the included angle a of the delivery pipe 22 relative to the gravity direction, which enhances the flexibility of the arrangement of the delivery pipe 22 and enables the feeding device 100 to be applicable to materials with different falling speeds, thereby expanding the application range of the feeding device 100.

[0058] Further, in some embodiments, the feeding member 21 comprises a water-cooled screw conveyor, one end of which is in communication with the hopper 10 and the other end of which is in communication with the discharge pipe 22, the water-cooled screw conveyor extending in a horizontal direction and feeding in the horizontal direction.

[0059] The water-cooled screw conveyor is mainly used for cooling and conveying materials. The water-cooled screw conveyor mainly comprises a feeding unit, a discharging unit, a cylinder, a cooling unit, a driving unit and a supporting unit. Its working principle is to use a circulating water cooling system to reduce the temperature of the material, so as to ensure that the material will not deteriorate or be damaged due to high temperature during conveying. The water-cooled screw conveyor is not only energy-saving and environmentally friendly, but also can adapt to various environments and is easy to maintain.

[0060] Illustratively, the material in the hopper 10 enters the water-cooled screw conveyor and is cooled and moved in the horizontal direction under the action of the water-cooled screw conveyor until the material enters the discharge pipe 22.

[0061] In this way, the water-cooled screw conveyor can cool and convey the material at the same time, so as to reduce the damage to the feeding member 21 or other safety accidents caused by the high temperature of the material, and improve the safety of conveying the material. In addition, the water-cooled screw conveyor can convey different types of materials, and its structure is compact and easy to maintain.

[0062] Further, please refer to Figure 1 In some embodiments, the feeding device 100 further comprises a weight detection member 30, which is arranged on the hopper 10 and is used for detecting the material in the containing cavity 11.

[0063] Illustratively, a load cell can be used as the weight detection member 30. As shown in Figure 1 The outer wall of the hopper 10 is provided with two weight detection members 30 to weigh the entire hopper 10. It can be understood that in other examples, the number of weight detection members 30 can be appropriately increased or decreased.

[0064] In this way, by measuring the weight of the hopper 10 without carrying the material and the weight of the hopper 10 carrying the material through the weight detection member 30, the weight of the material in the current hopper 10 can be calculated to allow the user to monitor the weight of the material in the hopper 10 in real time and assist in calculating the production capacity of the entire feeding device 100 according to the measured value.

[0065] In some embodiments, the feeding device 100 further comprises a temperature detection member 40, which is arranged on the hopper 10, and at least part of the temperature detection member 40 extends into the containing cavity 11.

[0066] The temperature detecting member 40 can measure the temperature in the accommodating cavity 11, and when the material is filled in the material bin 10, the temperature in the accommodating cavity 11 will change with the change of the filling degree of the material. When different materials are filled, the temperature in the accommodating cavity 11 will also change.

[0067] Therefore, the initial temperature of the material entering the feeding device 100 can be measured by the temperature detecting member 40, and the cooling degree of the water-cooled screw conveyor can be adjusted to cool the material to a suitable state and convey the material.

[0068] Please refer to Figure 1 In some embodiments, the switch assembly includes a first switch 50 arranged between the material bin 10 and the feeding member 21 to close or connect the passage between the material bin 10 and the feeding member 21.

[0069] The first switch 50 can be, but is not limited to, a valve or a gate. The first switch 50 can be configured as a manual switch or an automatic switch (such as a pneumatic gate valve). The opening degree of the first switch 50 can be adjusted, that is, the opening degree of the passage between the material bin 10 and the feeding member 21 is controllable, and the amount of material passing through the passage at one time can be controlled. A metal gasket can be arranged between the first switch 50 and the material bin 10, and a metal gasket can also be arranged between the first switch 50 and the feeding member 21. The metal gasket can seal the two parts, and the metal gasket itself has good corrosion resistance and oxidation resistance, and has a long service life.

[0070] When the feeding device 100 is in the initial state, the first switch 50 is in the closed state, at this time, the material is injected into the material bin 10, and all the injected material is accumulated in the material bin 10. When the horizontal feeder is running, the first switch 50 can be opened to allow the material in the material bin 10 to enter the feeding member 21.

[0071] When the horizontal feeder is not running, the first switch 50 is in the closed state to block the material in the material bin 10 from directly entering the horizontal feeder, thereby reducing the probability that a large amount of material is accumulated in the feed inlet of the horizontal feeder and blocks the horizontal feeder to cause the horizontal feeder to fail to operate normally. In addition, when the water-cooled feeding member is abnormal, the first switch 50 can be closed to block the material in the material bin 10 from entering the water-cooled feeding member, so as to facilitate the maintenance of the water-cooled feeding member.

[0072] Specifically, in some embodiments, the switch assembly further includes a second switch 60 arranged between the feeding member 21 and the discharge pipe 22 to close or connect the passage between the feeding member 21 and the discharge pipe 22.

[0073] The second switch 60 can be, but is not limited to, a valve or a gate. The second switch 60 can be configured as a manual switch or an automatic switch (such as a pneumatic gate valve). The opening degree of the second switch 60 is adjustable, meaning the opening degree of the channel between the feeding element 21 and the discharge pipe 22 is controllable, allowing control over the amount of material passing through the channel at a time. A metal gasket can be installed between the second switch 60 and the feeding element 21, and also between the second switch 60 and the discharge pipe 22. The metal gasket serves two purposes: it provides a seal between the two components, and it also possesses good corrosion and oxidation resistance, resulting in a long service life.

[0074] It should be noted that in some embodiments, the metal gasket described above can be replaced with gaskets made of other materials, such as gaskets made of graphite or ceramic materials.

[0075] When the material conveyed by the feeder 21 reaches the vicinity of the discharge pipe 22, the second switch 60 can be turned on to allow the material conveyed by the feeder 21 to smoothly enter the discharge pipe 22. In addition, when an abnormality occurs in the reaction chamber 200, the second switch 60 can be turned off in time to prevent the material from entering the discharge pipe 22 and entering the reaction chamber 200 through the discharge pipe 22.

[0076] More specifically, both the hopper 10 and the feeder 21 are constructed of stainless steel.

[0077] For example, the hopper 10 and the feeding component 21 may be made of materials such as 310S stainless steel, 316L stainless steel and 304 stainless steel.

[0078] This configuration reduces the content of magnetic materials in the hopper 10 and the feeding component 21, thereby reducing the probability of magnetizing materials in the hopper 10 and the feeding component 21.

[0079] like Figure 1 As shown, in some embodiments, the hopper 10 has a first opening 12 and a second opening 13, both of which connect the inside and outside of the receiving cavity 11. One of the first opening 12 and the second opening 13 is configured as a material injection channel, and the other is configured as a maintenance channel.

[0080] The following explanation uses the first opening 12 as the feeding channel and the second opening 13 as the maintenance channel as an example.

[0081] The first opening 12 is equipped with a first sealing element, and the second opening 13 is equipped with a second sealing element. Each sealing element can selectively seal the corresponding opening. When the hopper 10 is in normal condition, the first sealing element seals the first opening 12, and the second sealing element seals the second opening 13.

[0082] When it is necessary to inject material into the material bin 10, the first sealing member is removed from the first opening 12, and material is injected into the accommodating cavity 11 through the first opening 12. When the injection of material is completed, the first sealing member is used to seal the first opening 12, so as to seal the accommodating cavity 11, thereby preventing external air from entering the accommodating cavity 11 through the first opening 12 and following the material into the reaction bin 200, and thus affecting the quality of the final product.

[0083] Since the material bin 10 needs to be regularly maintained, the second sealing member can be removed when the material bin 10 needs to be maintained. The user can enter the material bin 10 through the second opening 13 to maintain the material bin 10.

[0084] In this way, the way of injecting material into the material bin 10 and the way of maintaining the material bin 10 are simplified.

[0085] It should be noted that when the first opening 12 is used as a maintenance channel and the second opening 13 is used as an injection channel, the working principle is similar to the above scheme, which will not be described here.

[0086] In some embodiments, the material bin 10 is provided with an air inlet part 14 which is selectively communicated with the accommodating cavity 11 and is used for injecting inert gas.

[0087] For example, the material bin 10 is provided with an air inlet which is provided with a third sealing member. The air inlet and the third sealing member are jointly configured as the air inlet part 14. The air inlet is connected with the accommodating cavity 11 and the outside.

[0088] Generally, the air inlet is sealed by the third sealing member. When the material bin 10 is used to inject material, the third sealing member is removed, and nitrogen or other inert gas is injected into the accommodating cavity 11 through the air inlet. For example, the nitrogen is injected at a pressure of 0.1 MPa to 0.5 MPa.

[0089] In this way, the nitrogen or other inert gas can dilute the air in the accommodating cavity 11 and has a sealing effect, thereby reducing the probability that the air in the accommodating cavity 11 follows the material into the reaction bin 200 and reducing the probability that the air oxidizes the material in the reaction bin 200, and improving the quality of the product produced by the final reaction.

[0090] In some embodiments, the material bin 10 is configured as a pressure-resistant container, and the pressure-resistant container has a pressure range of -0.1 MPa to 0.5 MPa.

[0091] In this way, the pressure capacity of the material bin 10 can be reduced due to the injection of nitrogen or other inert gas, and the probability that the wall of the material bin 10 is cracked is reduced, and the pressure capacity of the material bin 10 is improved.

[0092] In some embodiments, the feeding device 100 further comprises a material level detection member (not shown in the figure) located in the accommodating cavity 11 and used for detecting the position of the material.

[0093] The material level detection member can be a charged material level gauge, because the material in the hopper 10 is charged when the feeding device 100 is used, and the hopper 10 is in a charged state.

[0094] In this way, the material level detection member can accurately and in real time detect the amount of material in the accommodating cavity 11, and when the amount of material is too small, a signal can be sent to the alarm or a signal can be sent to the material supplementing mechanism to timely supply material to the hopper 10.

[0095] In addition, some embodiments of the present application provide a graphitization furnace 1000. As shown in the figure, the graphitization furnace 1000 comprises a reaction chamber 200 and a feeding device 100 as in the above embodiments, which is in communication with the reaction chamber 200 and used for feeding material into the reaction chamber 200. Figure 1

[0096] The feeding device 100 is used for storing material and continuously supplying material to the reaction chamber 200. When the feeding device 100 is in operation, the material in the hopper 10 flows into the feeding member 21, which uniformly transports the material in the horizontal direction, and when the material is transported to the discharging pipe 22, the material can fall into the reaction chamber 200 along the discharging pipe 22 because the discharging pipe 22 is arranged obliquely relative to the feeding member 21.

[0097] In this way, the material from the hopper 10 is first uniformly transported by the feeding member 21, and then the material from the feeding member 21 is quickly transported into the reaction chamber 200 through the discharging pipe 22, which is conducive to the uniform entry of the material into the reaction chamber 200 and can improve the consistency of the material reaction.

[0098] In other embodiments, the outside of the feeding device 100 is also subjected to insulation treatment. In order to realize semi-automatic discharging, the feeding device 100 is located above the reaction chamber 200, and the feeding device 100 is usually supported by a wooden frame or a metal frame, and the wooden frame and the metal frame are provided with insulation pads for insulation treatment, which can reduce the probability of short circuit of the graphitization furnace 1000 during power transmission.

[0099] ​Specific to an embodiment, the feeding device 100 comprises a hopper 10 and a feeding assembly 20. The hopper 10 is internally provided with a containing cavity 11 for containing materials. The feeding assembly 20 comprises a feeding piece 21 and a discharging pipe 22, which is vertically arranged relative to the feeding piece 21. The feeding piece 21 and the hopper 10 are provided with a first switch 50 for closing or connecting the passage between the hopper 10 and the feeding piece 21. The feeding piece 21 and the discharging pipe 22 are provided with a second switch 60 for closing or connecting the passage between the feeding piece 21 and the discharging pipe 22.

[0100] When the feeding device 100 is in operation, the first switch 50 and the second switch 60 are opened. The materials in the hopper 10 firstly pass through the first switch 50 to the feeding piece 21, which horizontally transports the materials. When the materials are transported to the vicinity of the discharging pipe 22, the materials pass through the second switch 60 to the discharging pipe 22. Since the discharging pipe 22 is vertically arranged relative to the feeding piece 21, the materials can fall into the reaction chamber 200 along the discharging pipe 22.

[0101] In this way, the materials from the hopper 10 are firstly uniformly transported by the feeding piece 21, and then rapidly transported by the discharging pipe 22 from the feeding piece 21 to the reaction chamber 200, which is beneficial to the uniform entry of the materials into the reaction chamber 200 and can improve the consistency of the material reaction.

[0102] The technical features of the above-described embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0103] The above-described embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, however, they should not be understood as the limitation of the patent application scope. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A feed device for feeding a reaction chamber, characterized in that, The application relates to a feeding device for a reaction chamber. The feeding device comprises a reaction chamber, a feeding assembly and a hopper. The hopper is internally provided with a containing cavity for containing materials. The feeding assembly is arranged below the hopper.

2. The feeder device according to claim 1, characterized in that The feeding assembly comprises a feeding member, a discharging pipe and a switch assembly.

3. The feeder of claim 1, wherein One end of the feeding member is provided with the switch assembly between the containing cavity.

4. The feeder of claim 1, wherein The switch assembly communicates or blocks the passage between the feeding member and the containing cavity.

5. The feeder of claim 1, wherein The other end of the feeding member communicates with the discharging pipe.

6. The feeder device according to any one of claims 1 to 5, characterized in that The discharging pipe is arranged at an angle relative to the feeding member.

7. The feeder device according to any one of claims 1 to 5, characterized in that The end of the discharging pipe away from the feeding member is provided with a discharging port.

8. The feeder device according to any one of claims 1 to 5, characterized in that The opening direction of the discharging port is arranged downward along the gravity direction.

9. The feeder device according to any one of claims 1 to 5, characterized in that The discharging pipe is arranged at an angle relative to the gravity direction and forms an included angle a, wherein 0<=a<=50.

10. The feeder device according to any one of claims 1 to 5, characterized in that The feeding member comprises a water-cooled screw conveyor.

11. The feeder device according to any one of claims 1 to 5, characterized in that One end of the water-cooled screw conveyor communicates with the hopper.

12. The feeder device according to any one of claims 1 to 5, characterized in that The other end of the water-cooled screw conveyor communicates with the discharging pipe.

13. A graphitization furnace characterized by, The water-cooled screw conveyor is arranged to extend along the horizontal direction and feeds along the horizontal direction. The feeding device further comprises a weight detection member. The weight detection member is arranged on the hopper and is used for detecting the materials in the containing cavity. The feeding device further comprises a temperature detection member. At least part of the temperature detection member extends into the containing cavity. The switch assembly comprises a first switch. The first switch is arranged between the hopper and the feeding member to close or communicate the passage between the hopper and the feeding member. The switch assembly further comprises a second switch. The second switch is arranged between the feeding member and the discharging pipe to close or communicate the passage between the feeding member and the discharging pipe. The hopper and the feeding member are both made of stainless steel. The hopper is provided with a first opening and a second opening. The first opening and the second opening both communicate the inside and outside of the containing cavity. One of the first opening and the second opening is constructed as a feeding channel. The other one is constructed as a maintenance channel. The hopper is provided with an air inlet. The air inlet is selectively communicated with the containing cavity and is used for injecting inert gas. The hopper is constructed as a pressure-resistant container. The pressure-resistant container has a pressure range of -0.1MPa to 0.5MPa. The feeding device further comprises a material level detection member. The material level detection member is arranged in the containing cavity and is used for detecting the position of the materials. The application further relates to a reaction device. The reaction device comprises a reaction chamber and the feeding device. The feeding device is communicated with the reaction chamber and is used for feeding the reaction chamber.

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