Image pickup device and graphitization furnace

Abstract

The utility model relates to a camera device and a graphitization furnace. The camera device comprises a lens sleeve, a camera, a blowing mechanism and a protection mechanism. The lens sleeve comprises a sleeve body and a lens, and the lens is arranged at one end of the sleeve body; the camera is arranged at one end, away from the lens, of the sleeve body; the blowing mechanism can blow the lens; the protection mechanism comprises a mounting piece and a shielding piece, and the shielding piece has a first state and a second state; in the first state, the sleeve body on the side where the lens is located penetrates through the mounting piece, the shielding piece is opened relative to the mounting piece, and the mounting piece, the lens and the blowing mechanism are communicated; when the first state is switched to the second state, the lens moves relative to the installation part, and the shielding part blocks the channel of the installation part for the lens to penetrate through. When the sleeve body needs to be withdrawn from the furnace wall, the sleeve body drives the lens to move relative to the mounting piece, and the shielding piece can block a channel, through which the lens penetrates, of the mounting piece, so that the probability that a large amount of external air is sucked into the furnace body is reduced, and the quality of a finally obtained product is improved.

Description

TECHNICAL FIELD

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

[0002] When producing graphite material through a graphitization furnace, in order to convert thermodynamically unstable carbonaceous material into graphite material, the core temperature inside the furnace body of the graphitization furnace needs to be controlled within a certain temperature range. The carbonaceous material reacts by heating the temperature inside the furnace body, and if the temperature is not properly controlled, the surface of the carbonaceous material is prone to coking, thereby affecting the conversion rate and quality. Therefore, it is necessary to observe the coking condition in the graphitization furnace through an observation device.

[0003] At present, the coking condition in the graphitization furnace is generally observed through a camera device, and when the temperature in the graphitization furnace or the camera device is abnormal, the camera device needs to be removed from the graphitization furnace. During the process of removing the camera device from the graphitization furnace, external air is easy to enter the graphitization furnace, and therefore how to reduce the entry of external air into the graphitization furnace becomes a problem to be solved. CONTENT OF THE INVENTION

[0004] In view of the above problems, the present application provides a camera device and a graphitization furnace, which can reduce the entry of external air into the graphitization furnace during the process of removing the camera device from the graphitization furnace, thereby affecting the quality of the final product.

[0005] In a first aspect, the present application provides a camera device, which comprises a lens sleeve, a camera, a blowing mechanism and a protection mechanism. The lens sleeve comprises a sleeve body and a lens, and the lens is arranged at one end of the sleeve body; the camera is arranged at the end of the sleeve body away from the lens; the blowing mechanism can blow the lens; the protection mechanism comprises a mounting piece and a shielding piece, and the shielding piece has a first state and a second state; when in the first state, the sleeve body on the side where the lens is located penetrates the mounting piece, the shielding piece is opened relative to the mounting piece, and the mounting piece, the lens and the blowing mechanism are in communication; when switching from the first state to the second state, the lens moves relative to the mounting piece, and the shielding piece blocks the channel of the mounting piece for the lens to penetrate.

[0006] In the technical scheme of the present application, when the end of the sleeve body provided with the lens is inserted into the furnace wall, the shielding piece does not block the channel of the mounting piece for the lens to penetrate, i.e. the channel between the mounting piece and the furnace wall, and the gas blown by the blowing mechanism can pass through the mounting piece and enter the furnace wall to blow the lens. When it is necessary to withdraw the sleeve body from the furnace wall, the sleeve body drives the lens to move relative to the mounting piece, and the shielding piece can block the channel of the mounting piece for the lens to penetrate, i.e. the channel between the mounting piece and the furnace wall, so as to maintain the stability of the pressure in the furnace body, reduce the probability of a large amount of external air being sucked into the furnace body, and improve the quality of the final product.

[0007] When the sleeve body needs to be inserted into the furnace wall again, the shielding member no longer blocks the passage between the mounting member and the furnace wall, the sleeve body is inserted into the furnace wall again, and the gas blown by the gas blowing mechanism can pass through the mounting member and enter the furnace wall to blow the lens. In this way, the probability of external air entering the furnace wall through the mounting member during the reciprocating insertion and removal of the sleeve body from the furnace wall is reduced, and the quality of the final product is improved.

[0008] In some embodiments, the mounting member is sleeved on the outside of the sleeve body, and the at least partially shielding member is arranged inside the mounting member.

[0009] In this way, the structure of the shielding member is enriched, the connection mode between the shielding member and the mounting member is widened, and the preparation difficulty of the shielding member and the mounting member is reduced.

[0010] In some embodiments, the shielding member is configured in a plate-like structure, the shielding member includes a first end and a second end arranged relative to each other, the first end is rotationally connected to the inner wall of the mounting member, and the second end can abut against the sleeve body and deflect around the first end with the movement of the sleeve body, wherein in the first state, the second end abuts against the outer wall of the mounting member.

[0011] In this way, the shielding member does not need to be controlled separately, but is linked with the sleeve body, and the sleeve body drives the shielding member to switch between different states, simplifying the working principle of the shielding member.

[0012] In some embodiments, the protection mechanism further includes a base and a driving member, the base is provided with a guide portion, one end of the driving member is movably connected to the guide portion, and the other end is connected to the sleeve body and drives the sleeve body to move relative to the mounting member.

[0013] In this way, the movement route of the sleeve body is defined by the guide portion on the base, so that the movement speed of the sleeve body can be accelerated, the probability of collision between the sleeve body and other components during movement is reduced, the probability of damage to the sleeve body is reduced, and the sleeve body is protected.

[0014] In some embodiments, the gas blowing mechanism includes a first housing, the first housing is sleeved on the outside of the sleeve body, and the inner wall of the first housing and the outer pipe wall of the sleeve body are spaced apart to form a first cooling cavity;

[0015] A first gas outlet and a first gas inlet are formed in the first housing and communicate with the first cooling cavity;

[0016] The first gas inlet, the first cooling cavity, and the first gas outlet jointly form a first cooling channel for the circulation of cooling gas.

[0017] In this way, the first shell is sleeved on the sleeve body, which can protect the sleeve body and the lens on the sleeve body. In addition, the first air inlet, the first cooling cavity and the first air outlet jointly form a first cooling channel for the flow of cooling gas. When the cooling gas flows in the first cooling channel, the lens sleeve in the first cooling cavity can be cooled to prevent the lens sleeve from being melted by high temperature.

[0018] In some embodiments, the lens is arranged on the same side of the first air outlet, the air outlet direction of the first air outlet is parallel to the central axis of the sleeve body, and the first shell comprises a first air guide portion located at the end of the first air outlet. The airflow blown out of the first air outlet can be guided to the lens through the first air guide portion.

[0019] In this way, the gas blown out of the first air outlet can be blown onto the first air guide portion, and the flow direction of the gas can be changed by the blocking of the first air guide portion. For example, the gas flowing horizontally to the left along the central axis can return to the oblique back after encountering the first air guide portion. The refracted gas can blow over a larger area.

[0020] When the gas finally blows on the lens, the dust adhering to the outer lens surface of the lens can be blown away by the gas, ensuring that the outer lens surface of the lens is clean, thereby reducing the influence of dust in the graphitization furnace on observation and improving the accuracy of the observation result. In addition, the gas blown onto the outer lens surface can also take away the heat on the lens, thereby reducing the temperature of the lens and preventing it from being melted by high temperature.

[0021] In some embodiments, the cross section of the first air outlet is annular, and the first air guide portion is configured as an annular baffle arranged along the circumference of the first air outlet. The air guide surface of the annular baffle intersects the central axis.

[0022] In this way, not only can the cooling gas uniformly blow on the lens to take away the dust and ensure that the outer lens surface of the lens is clean, but also can uniformly take away the heat on the surface of the lens, thereby preventing the lens from exploding due to uneven surface temperature.

[0023] In some embodiments, the camera device further comprises a cover shell, and the cover shell covers the outside of the camera.

[0024] In this way, the camera is arranged in the cover shell, and the dust in the external environment can be isolated by the cover shell to ensure stable operation of the camera.

[0025] In some embodiments, the cover shell is detachably connected with the first shell, and a cover shell cavity is formed in the cover shell. The camera is arranged in the cover shell cavity.

[0026] When any of the cover, the first shell and the camera needs to be repaired or replaced, the cover is removed from the first shell, and the damaged part can be replaced with a new part. Compared with replacing the cover, the first shell and the camera together, the maintenance cost of the camera device is reduced.

[0027] In some embodiments, the air blowing mechanism further comprises a second shell, the second shell is sleeved outside the first shell, and an inner wall of the second shell is spaced from an outer pipe wall of the sleeve body to form a second cooling cavity;

[0028] The second shell is provided with a second air outlet and a second air inlet which are in communication with the second cooling cavity;

[0029] The second air inlet, the second cooling cavity and the second air outlet jointly form a second cooling channel for the cooling gas to flow through.

[0030] In this way, the second shell can further protect the sleeve body and the first shell, thereby protecting the first lens on the sleeve body. In addition, the second air inlet, the second cooling cavity and the second air outlet jointly form a second cooling channel for the cooling gas to flow through. When the cooling gas flows through the second cooling channel, the sleeve body and the first shell in the second cooling cavity can be cooled to prevent the sleeve body from being melted by high temperature.

[0031] In addition, the first cooling channel and the second cooling channel jointly cool, the ambient temperature of the periphery of the first shell is reduced by the second cooling channel, and the cooling gas flowing through the second cooling channel can form a heat insulation layer to isolate the high-temperature gas in the graphitization furnace from the first shell. Thus, the first cooling cavity in the first shell can better cool the sleeve body to prevent the lens sleeve from being melted by high temperature, thereby effectively protecting the first lens.

[0032] In some embodiments, one end of the second shell is located between the first air inlet and the shielding piece, and the other end extends to the first air outlet.

[0033] The second air inlet is located on a side of the shielding piece away from the first air inlet, and the second air outlet is disposed on the same side as the first air outlet.

[0034] In this way, because the area where the first air outlet is located is provided with a lens, the cooling gas discharged from the second air outlet can form an air wall near the lens, which prevents dust from approaching the outer lens surface of the lens and ensures that the outer lens surface of the lens is clean and clear.

[0035] In addition, the cooling gas discharged from the second air outlet forms an air wall to isolate the high-temperature gas in the graphite furnace from the lens surface, and cooperates with the cooling gas blown out from the first air outlet to carry away the heat on the first lens, thereby reducing the temperature of the lens and preventing it from being melted by high temperature.

[0036] In some embodiments, the blowing mechanism further comprises a third shell, the third shell is sleeved outside the second shell, and an inner wall of the third shell is spaced from an outer pipe wall of the sleeve body to form a third cooling cavity;

[0037] The third shell is provided with a third air outlet and a third air inlet which are in communication with the third cooling cavity;

[0038] The third air inlet, the third cooling cavity and the third air outlet jointly form a third cooling channel for the cooling gas to flow through.

[0039] In this way, the third shell can further protect the second shell, the sleeve body and the first shell, thereby protecting the first lens on the sleeve body. Moreover, the cooling gas flowing through the third cooling channel can take away the heat on the outer peripheral side of the second shell, thereby achieving cooling.

[0040] In addition, the cooling gas flowing through the third cooling channel can form a heat insulation layer to insulate the high-temperature furnace wall from the second shell, thereby insulating the first shell from the external high-temperature environment. In combination with the cooling gas flowing through the second cooling channel and the first cooling channel, the first cooling cavity in the first shell can better cool the sleeve body, thereby preventing the lens sleeve from being melted by high temperature, and finally effectively protecting the first lens.

[0041] In a second aspect, the application provides a graphitization furnace, which comprises a furnace body and a camera device as in the above embodiments, the camera device is inserted on a furnace wall of the furnace body to observe the situation in a reaction cavity of the furnace body.

[0042] In some embodiments, an inner wall of the furnace wall is provided with a groove, and the lens is located at the bottom of the groove.

[0043] In this way, the lens can have a larger viewing angle to observe the picture inside the graphitization furnace, thereby facilitating the operator to observe the coking condition in the graphitization furnace in time, so as to better control the process of carbonaceous material conversion.

[0044] In some embodiments, the lens sleeve is provided with an end portion of the lens, which can pass through the furnace wall to enter the reaction cavity. Along the axial direction of the lens sleeve, the distance between the end portion entering the reaction cavity and the outer wall of the furnace wall is L1, and the wall thickness of the furnace wall is L2. The ratio between L1 and L2 is in the range of 1:1 to 1.5:1.

[0045] In this way, because the temperature in the furnace body is very high, the length of the lens protruding relative to the furnace wall is controlled, which can reduce the probability of damage of the lens due to high temperature melting.

[0046] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application, the following detailed description of the embodiments of the present application can be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more obvious and easy to understand, the following detailed description of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0047] 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 entire drawings, like reference numerals designate like parts. In the drawings:

[0048] Figure 1 is a sectional view of a camera according to one or more embodiments.

[0049] Figure 2 is Figure 1 is an enlarged view of A in FIG.

[0050] Figure 3 is a sectional view of a camera inserted into a furnace wall according to one or more embodiments.

[0051] Figure 4 is a perspective view of a camera according to one or more embodiments.

[0052] Reference signs in the detailed description of the embodiments are as follows:

[0053] 100, camera;

[0054] 10, lens sleeve; 11, sleeve body; 12, lens; 20, camera; 30, blowing mechanism; 31, first housing; 311, first air outlet; 312, first air inlet; 313, first air guide part; 314, first cooling cavity; 32, second housing; 321, second air outlet; 322, second air inlet; 323, second air guide part; 324, second cooling cavity; 33, third housing; 331, third air outlet; 332, third air inlet; 333, third cooling cavity; 40, protection mechanism; 41, mounting piece; 42, shielding piece; 43, base; 44, driving piece; 50, cover; 200, furnace wall. DETAILED DESCRIPTION

[0055] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0056] 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 terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise noted, the terms "including" and "comprising" are open-ended and do not exclude the presence of unrecited elements or limitations.

[0057] In the description of the embodiments of the present application, if the technical terms "first", "second", etc. are used, 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 technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise explicitly and specifically limited.

[0058] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with each other.

[0059] In the description of the embodiments of the present application, if the term "and / or" appears, it only describes 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.

[0060] In the description of the embodiments of the present application, if the term "plurality" appears, it means two or more (including two), and similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0061] In the description of the embodiments of the present application, if 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as limiting the embodiments of the present application. It 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.

[0062] In the description of the embodiments of the present application, unless explicitly defined and limited otherwise, if there is any occurrence, the technical terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; 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.

[0063] The carbon atoms of the carbonaceous material are arranged irregularly. Only by high-temperature heat treatment can the carbon atoms be recrystallized and reordered to exhibit the crystal structure of graphite, thereby having excellent properties such as electrical conductivity, thermal conductivity, and chemical and thermal stability of graphite. Therefore, it is necessary to convert the carbonaceous material into artificial graphite material by using a graphitization furnace, so as to apply the graphite material to the production and preparation of battery materials.

[0064] During the reaction process, the core temperature inside the graphitization furnace needs to be controlled between a certain temperature, so as to stably convert the carbonaceous material into graphite material. Specifically, the temperature is different due to the properties of the carbonaceous material itself, the type of process used, and the time. During the conversion process, the surface of the carbonaceous material is prone to coking, thereby affecting the conversion rate and quality. Therefore, it is necessary to observe the coking condition in the graphitization furnace through the observation device, so as to better control the conversion process of the carbonaceous material.

[0065] Part of the graphitization furnace usually uses a high-temperature camera device to observe the inside of the graphitization furnace, and cools the high-temperature camera device by liquid cooling. However, this design always has the risk of liquid leakage into the graphitization furnace, and the liquid impurities will affect the conversion of the carbonaceous material into graphite material, and also cause explosion in the graphitization furnace, thereby increasing the unsafe factors.

[0066] In addition, if the temperature in the graphitization furnace is abnormally high, the camera device will be damaged, thereby affecting the observation result. Moreover, if the camera device itself is abnormal, the observation result will also be affected. Therefore, the camera device needs to be taken out from the graphitization furnace in time, repaired, and then inserted into the wall of the graphitization furnace. During the process of taking out the camera device, the air outside is easy to enter the graphitization furnace through the wall, thereby affecting the quality of the final obtained product.

[0067] Based on the above considerations, in order to reduce the probability of external air easily entering the graphitization furnace through the furnace wall during the removal of the camera device, some embodiments of the present application provide a camera device, the shielding member of which can timely block the channel of the mounting member, thereby blocking the channel between the mounting member and the furnace wall, and further reducing the probability of external air entering the furnace wall through the mounting member and finally entering the graphitization furnace.

[0068] The camera device disclosed in the embodiments of the present application can be used in high-temperature furnaces such as graphite, glass, ceramic, steel, cement, and crystal growth, but is not limited thereto. The camera device disclosed in the present application can be used as an observation part of the graphitization furnace. In this way, during observation and measurement, the camera device is not easily affected by dust, ensuring accurate observation and facilitating users to understand the coking condition inside the graphitization furnace at any time.

[0069] The embodiments of the present application also provide a battery production equipment, which can be used for the production of secondary batteries or primary batteries, but is not limited thereto. The battery production equipment can also be used for the processing and production of lithium-sulfur batteries, sodium-ion batteries, or magnesium-ion batteries, but is not limited thereto.

[0070] The following embodiments are described with reference to the graphitization furnace of the embodiments of the present application for convenience of description.

[0071] The graphitization furnace generally comprises a furnace body, a heating device, a camera device, a feeding device, a discharging device, and a gas extraction device. The heating device is used to heat the furnace body to elevate the temperature of the furnace body to a corresponding reaction temperature and maintain it. The furnace wall of the furnace body has a heat preservation structure. The furnace body has a reaction cavity. The feeding device is connected to the reaction cavity to input carbonaceous materials and corresponding auxiliary materials into the reaction cavity. The camera device is generally inserted into the furnace wall of the reaction cavity to observe the coking condition of the material surface in the reaction cavity, the oxidation and combustion condition of the material surface, and the burning loss condition of the auxiliary materials, etc. The discharging device is connected to the reaction cavity to discharge the reacted graphite. The gas extraction device is connected to the reaction cavity to discharge the waste gas and impurity gas generated during the reaction, thereby ensuring a good reaction atmosphere. In addition, the graphitization furnace can also comprise a gas blowing device for blowing inert gas such as nitrogen into the reaction cavity to cover the materials in the reaction furnace and prevent the materials from reacting with impurity gas and water vapor.

[0072] The present application provides a camera device 100, please refer to Figures 1 to 3The camera 100 comprises a lens sleeve 10, a camera 20, a blowing mechanism 30 and a protection mechanism 40. The lens sleeve 10 comprises a sleeve body 11 and a lens 12, and the lens 12 is arranged at one end of the sleeve body 11; the camera 20 is arranged at the end of the sleeve body 11 away from the lens 12; the blowing mechanism 30 can blow the lens 12; the protection mechanism 40 comprises a mounting piece 41 and a shielding piece 42, and the shielding piece 42 has a first state and a second state; when in the first state, the sleeve body 11 on the side where the lens 12 is located penetrates the mounting piece 41, the shielding piece 42 is open relative to the mounting piece 41, and the mounting piece 41, the lens 12 and the blowing mechanism 30 are in communication; when switched from the first state to the second state, the lens 12 moves relative to the mounting piece 41, and the shielding piece 42 can block the channel of the mounting piece 41 for the lens 12 to penetrate.

[0073] Exemplarily, the sleeve body 11 is a pipe structure with both ends open and hollow inside, which can be made of high-temperature-resistant materials such as tungsten alloy, so that it can withstand the high temperature in the graphitization furnace without melting, and also has a certain strength to support various components. The lens 12 is arranged at one end of the sleeve body 11; that is, the pipe wall of the end of the sleeve body 11 can wrap the lens 12, and the circumferential side of the lens 12 is sealed with the port of the sleeve body 11 to prevent high-temperature gas and dust in the graphitization furnace from entering the sleeve body 11; in this way, the cleanliness of the inner mirror surface of the lens 12 facing the camera 20 can be ensured, so that the inner mirror surface of the lens 12 does not need to be cleaned, and the high-temperature gas and dust can also be prevented from reaching the camera 20 along the sleeve body 11.

[0074] The circumferential side of the lens 12 and the port of the sleeve body 11 can be filled with high-temperature-resistant sealant to achieve sealed connection.

[0075] The lens 12 can be an infrared filter quartz glass lens 12; the infrared filter quartz glass lens 12 can effectively reduce the infrared rays of high-temperature radiation, avoid overexposure of the camera 20, and enable the camera 20 to clearly obtain the working state in the graphitization furnace; at the same time, the infrared filter quartz glass lens 12 can prevent the damage of the hot gas and high-temperature radiation electromagnetic waves in the furnace to the camera 20; optionally, to obtain the infrared filter quartz glass lens 12, an infrared cut film can be coated on the outer surface layer of the quartz glass; or a layer of infrared filter glass such as Schott BG62 glass can be added to the outer surface of the quartz glass.

[0076] The camera 20 can obtain the working state picture in the graphitization furnace, and convert the obtained video and image signals into photoelectric signals and transmit them to a corresponding display screen; the display screen can be directly integrated on the camera 20, or the display screen can be connected with the camera 20 for signal transmission through a data line.

[0077] The camera 20 is arranged at the other end of the sleeve body 11 away from the lens 12, and can be fixedly connected with the sleeve body 11, or can be detachably connected with the sleeve body 11 by means of screw connection or the like. The camera 20 is arranged as far away from the high-temperature graphitization furnace as possible to avoid damage caused by high temperature. The lens 12 is arranged at the end of the sleeve body 11 and penetrates the furnace wall 200 of the graphitization furnace, and the lens 12 is closer to the high-temperature carbonaceous material. Compared with the other end, the end where the lens 12 is arranged is less limited by the furnace wall 200, so that the lens 12 has a larger observation visual angle range. The camera 20 is arranged at the other end of the sleeve body 11, which not only avoids damage caused by high temperature, but also can receive the image inside the graphitization furnace through the lens 12 and display the image, so that the user can observe the coking condition in the graphitization furnace in time, thereby better controlling the conversion process of the carbonaceous material.

[0078] The gas blown by the gas blowing mechanism 30 is inert gas, such as nitrogen, so that the carbonaceous material in the conversion process can be provided with atmosphere protection, and the probability of reaction between the carbonaceous material and other components in the air is prevented.

[0079] The mounting member 41 is mainly used for mounting the shielding member 42, and the sleeve body 11 is arranged to move back and forth in the mounting member 41 at the part where the lens 12 is arranged. The mounting member 41 is in a relatively static state relative to the furnace wall 200, in other words, when the sleeve body 11 moves back and forth in and out of the furnace wall 200, the sleeve body 11 is also in a relative motion state relative to the mounting member 41. The shielding member 42 can block or expose the channel in the mounting member 41 for the lens 12 to pass through, so as to control the air from the outside to enter the furnace wall 200 through the channel.

[0080] The working principle of the camera device 100 will be described below in combination with the switching back and forth between the two states of the camera device 100 being inserted into the furnace wall 200 and being separated from the furnace wall 200.

[0081] When the camera device 100 is in a normal use state, the end of the sleeve body 11 provided with the lens 12 is inserted into the furnace wall 200, and the camera 20 can obtain the working state of the graphitization furnace, so that the user can observe the coking condition in the graphitization furnace in time. At this time, the channel in the mounting member 41 is in an open state, that is, the shielding member 42 is in a first state, and the gas blown by the gas blowing mechanism 30 can reach the lens 12 through the mounting member 41.

[0082] During a long observation process, dust in the graphitization furnace will slowly adhere to the outer surface of the lens 12 away from the camera 20, resulting in a blurred image observed by the camera 20 through the lens 12. The blowing mechanism 30 can blow the outer surface of the lens 12; thus, it ensures that the dust adhering to the outer surface of the lens 12 can be blown away by the blowing mechanism 30, ensuring that the outer surface of the lens 12 is clean, thereby reducing the impact of dust in the graphitization furnace on observation and improving the accuracy of the observation results. In addition, the airflow formed by the blowing mechanism 30 can also carry away the heat on the lens 12, thereby reducing the temperature of the lens 12 and preventing it from being melted by high temperature.

[0083] When the camera 100 is used up or the temperature in the graphitization furnace is too high or the camera 100 is abnormal, the sleeve body 11 moves in the direction of withdrawing from the furnace wall 200. The sleeve body 11 moves relative to the mounting member 41, and when the end portion where the lens is located moves to the vicinity of the blocking member 42, the blocking member 42 starts to operate and blocks the passage of the mounting member 41 for the lens 12 to pass through, and the blocking member 42 switches from the first state to the second state. At this time, the blowing mechanism 30 and the air outside cannot enter the furnace wall 200 through the mounting member 41.

[0084] Because the air pressure in the graphitization furnace becomes negative during its operation, if the passage for the furnace wall 200 to communicate with the outside is not blocked after the sleeve body 11 withdraws from the furnace wall 200, the air outside can be sucked into the graphitization furnace under the action of negative pressure, thereby causing the material in the furnace body to react with oxygen in the air, and thus reducing the quality of the final product obtained.

[0085] During the process of the sleeve body 11 withdrawing from the furnace wall 200, the passage of the mounting member 41 for the lens 12 to pass through is timely blocked by the blocking member 42 to block the passage between the mounting member 41 and the furnace wall 200. In this way, the air outside will not enter the furnace wall 200 through the mounting member 41, and the pressure in the furnace body can be in a relatively stable state, thereby reducing the probability that a large amount of air outside is sucked into the furnace body, thereby reducing the quality of the final product obtained.

[0086] When the sleeve body 11 withdraws from the furnace wall 200 and is repaired, the blocking member 42 moves relative to the mounting member 41 until the blocking member 42 no longer blocks the passage between the mounting member 41 and the furnace wall 200, and the blocking member 42 switches from the second state to the first state. Subsequently, the sleeve body 11 can be inserted into the furnace wall 200, and the camera 20 starts to operate and continues to monitor the coking condition inside the furnace body.

[0087] In this way, the sleeve body 11 reciprocally moves relative to the mounting member 41, thereby continuously inserting or leaving the furnace wall 200, and the blocking member 42 continuously blocks or does not block the passage between the mounting member 41 and the furnace wall 200.

[0088] In summary, when the end of the sleeve body 11 equipped with the lens 12 is inserted into the furnace wall 200, the blocking piece 42 does not block the passage of the lens 12 through the mounting piece 41, i.e. the passage between the mounting piece 41 and the furnace wall 200, so that the gas blown by the blowing mechanism 30 can pass through the mounting piece 41 and enter the furnace wall 200 to blow the lens 12. When the sleeve body 11 needs to be withdrawn from the furnace wall 200, the sleeve body 11 moves the lens 12 relative to the mounting piece 41, and the blocking piece 42 can block the passage of the lens 12 through the mounting piece 41, i.e. the passage between the mounting piece 41 and the furnace wall 200, so that the pressure in the furnace body can be maintained stable, the probability of a large amount of external air being sucked into the furnace body is reduced, and the quality of the final product is improved.

[0089] When the sleeve body 11 needs to be inserted into the furnace wall 200 again, the blocking piece 42 no longer blocks the passage between the mounting piece 41 and the furnace wall 200, and the sleeve body 11 is inserted into the furnace wall 200 again, so that the gas blown by the blowing mechanism 30 can pass through the mounting piece 41 and enter the furnace wall 200 to blow the lens 12. In this way, the probability of external air entering the furnace wall 200 through the mounting piece 41 during the reciprocating insertion and withdrawal of the sleeve body 11 into and out of the furnace wall 200 is reduced, and the quality of the final product is improved.

[0090] Please refer to Figure 3 In some embodiments, the mounting piece 41 is sleeved on the outside of the sleeve body 11, and at least part of the blocking piece 42 is arranged inside the mounting piece 41.

[0091] The mounting piece 41 can be but is not limited to a hollow sleeve for the reciprocating movement of the sleeve body 11. The blocking piece 42 can be entirely located inside the mounting piece 41, or part of the blocking piece 42 is located inside the mounting piece 41.

[0092] When the entire blocking piece 42 is located inside the mounting piece 41, the blocking piece 42 can move inside the mounting piece 41 and switch between the two states of blocking the passage between the mounting piece 41 and the furnace wall 200 and not blocking the passage between the mounting piece 41.

[0093] When part of the blocking piece 42 is located in the mounting piece 41, an opening is formed in the wall of the mounting piece 41, and the blocking piece 42 is movably inserted into the opening. The blocking piece 42 moves along the opening towards the inside of the mounting piece 41 to block the passage between the mounting piece 41 and the furnace wall 200. The blocking piece 42 can also move along the opening away from the inside of the mounting piece 41, so as not to block the passage between the mounting piece 41, to allow the sleeve body 11 to reciprocate in the mounting piece 41.

[0094] In this way, the structure of the blocking piece 42 is enriched, the connection mode between the blocking piece 42 and the mounting piece 41 is widened, and the preparation difficulty of the blocking piece 42 and the mounting piece 41 is reduced.

[0095] It can be understood that in some embodiments, the shielding member 42 can also be arranged outside the mounting member 41, as long as the shielding member 42 can be switched back and forth between the first state and the second state.

[0096] Specifically, in some embodiments, the shielding member 42 is configured as a plate-shaped structure, the shielding member 42 includes a first end and a second end relative to the first end, the first end is rotationally connected with the inner wall of the mounting member 41, and the second end can abut against the sleeve body 11 and deflect around the first end with the movement of the sleeve body 11, wherein in the first state, the second end abuts against the outer wall of the mounting member 41.

[0097] It is assumed that the shielding member 42 blocks the channel in the mounting member 41 for the lens 12 to pass through in the initial state. When it is necessary to detect the coking condition in the graphitization furnace, the sleeve body 11 moves towards the furnace wall 200, and after the sleeve body 11 abuts against the shielding member 42, the sleeve body 11 can push the shielding member 42 to deflect. With the continuous deepening of the sleeve body 11, the deflection angle of the shielding member 42 increases, and the mounting member 41 is no longer blocked, at which time the lens 12 can pass through the mounting member 41.

[0098] In the process of the sleeve body 11 exiting the furnace wall 200, when the sleeve body 11 moves to no longer abut against the shielding member 42, the shielding member 42 deflects under the action of its own gravity and blocks the mounting member 41.

[0099] In this way, the shielding member 42 does not need to be controlled separately, but is linked with the sleeve body 11, and the sleeve body 11 drives the shielding member 42 to switch between different states, simplifying the working principle of the shielding member 42.

[0100] More specifically, in some embodiments, the protection mechanism 40 further includes a base 43 and a driving member 44, the base 43 is provided with a guide portion, one end of the driving member 44 is movably connected with the guide portion, and the other end is connected with the sleeve body 11 and drives the sleeve body 11 to move relative to the mounting member 41.

[0101] The base 43 can be but is not limited to provided with a sliding rail, which is configured as the guide portion. The driving member 44 can move along the sliding rail, thereby driving the sleeve body 11 to move in the direction in which the sliding rail extends. The driving member 44 can be but is not limited to a motor.

[0102] Exemplarily, as shown in Figure 4 The base 43 is provided with a sliding groove. One end of the driving member 44 is slidably connected with the sliding groove, and the other end is connected with the sleeve body 11. When the driving member 44 moves along the sliding groove, it can drive the sleeve body 11 to move together, thereby driving the lens 12 to move quickly relative to the mounting member 41.

[0103] Thus, the movement route of the sleeve body 11 is defined by the guide portion provided on the base 43, so that the movement speed of the sleeve body 11 can be increased, and the probability of collision between the sleeve body 11 and other components during movement can be reduced, the probability of damage to the sleeve body 11 can be reduced, and the sleeve body 11 is protected.

[0104] In some embodiments, the blowing mechanism 30 includes a first shell 31, which is sleeved on the outside of the sleeve body 11, and the inner wall of the first shell 31 is spaced apart from the outer wall of the sleeve body 11 to form a first cooling cavity 314; the first shell 31 is provided with a first gas outlet 311 and a first gas inlet 312 which are in communication with the first cooling cavity 314; the first gas inlet 312, the first cooling cavity 314, and the first gas outlet 311 together form a first cooling channel for cooling gas to flow through.

[0105] The first shell 31 is a hollow tube structure, which can be made of high-temperature-resistant materials such as tungsten alloy, so that it can withstand the high temperature in the graphitization furnace and has sufficient strength to support various components.

[0106] The front end of the sleeve body 11, i.e., the end of the sleeve body 11 on which the lens 12 is installed, is inserted into the first shell 31 until it abuts against the bottom end of the first shell 31. The rear end of the sleeve body 11, i.e., the other end of the sleeve body 11 close to the camera 20, extends outward from the first shell 31 by a certain distance, and a part of the sleeve body 11 is sleeved in the first shell 31. The two ends of the first shell 31 are respectively sealed with the inserted part of the sleeve body 11 to prevent high-temperature gas and dust in the graphitization furnace from escaping from the first shell 31 to the external environment.

[0107] In this way, the first shell 31 is sleeved on the sleeve body 11, which can protect the sleeve body 11 and the lens 12 on the sleeve body 11. On the other hand, the first gas inlet 312, the first cooling cavity 314, and the first gas outlet 311 together form a first cooling channel for cooling gas to flow through, so that the lens sleeve 10 in the first cooling cavity 314 can be cooled to prevent the lens sleeve 10 from being melted by high temperature.

[0108] When cooling the lens sleeve 10, the cooling gas can be an oxygen-free gas such as nitrogen or other inert gas. Nitrogen is introduced into the first cooling cavity 314 from the first gas inlet 312 and then flows along the first cooling cavity 314. At the same time, the nitrogen carries away the heat from the outer periphery of the sleeve body 11 of the lens sleeve 10, thereby achieving cooling.

[0109] In some embodiments, the first air outlet 311 can be aligned with the lens 12. That is, the air outlet direction of the first air outlet 311 intersects with the outer mirror surface of the lens 12 away from the camera 20, and the nitrogen gas discharged from the first air outlet 311 is directly sprayed onto the outer mirror surface of the lens 12. On the one hand, it can ensure that the dust adhered to the outer mirror surface of the lens 12 can be blown away by the blowing device, so as to keep the outer mirror surface of the lens 12 clean and ensure clear observation. On the other hand, the nitrogen gas can also take away the heat on the lens 12, so as to reduce the temperature of the lens 12 and prevent it from being melted by high temperature.

[0110] As shown in FIG. 1, Figure 2 In other embodiments, the lens 12 is arranged on the same side as the first air outlet 311, the air outlet direction of the first air outlet 311 is parallel to the central axis of the sleeve body 11, and the first shell 31 comprises a first air guide part 313. The first air guide part 313 is located at the end of the first air outlet 311, and the airflow blown out of the first air outlet 311 can be guided to the lens 12 through the first air guide part 313.

[0111] In other words, the air outlet direction of the first air outlet 311 is parallel to the axis of the sleeve body 11, and the Figure 3

[0112] As shown in the orientation shown, the gas is blown out of the first air outlet 311 along the direction of the central axis to the left, and the flow direction of the gas is perpendicular to the lens 12, but the gas does not intersect with the outer mirror surface, but surrounds the outer mirror surface.

[0113] The first air guide part 313 can be a reflective plate with a smooth curved surface. The smooth curved surface of the reflective plate is aligned with the first air outlet 311. The gas aligned with the first air outlet 311 can be deflected by 90°-180° through the guidance of the smooth curved surface, and then can be blown onto the lens 12.

[0114] By arranging the first air guide part 313 at the end of the first shell 31, the first air outlet 311 is aligned with all or part of the first air guide part 313. The gas blown out of the first air outlet 311 can be blown onto the first air guide part 313. By blocking the first air guide part 313, the flow direction of the gas is changed. For example, the gas horizontally to the left along the central axis returns to the oblique back after encountering the first air guide part 313. The refracted gas can blow over a larger area.

[0115] When the gas is finally blown on the lens 12, the dust adhered to the outer mirror surface of the lens 12 can be blown away by the gas, ensuring that the outer mirror surface of the lens 12 is clean, thereby reducing the influence of dust in the graphitization furnace on observation and improving the accuracy of the observation result. In addition, the gas blown onto the outer mirror surface can also take away the heat on the lens 12, thereby reducing the temperature of the lens 12 and preventing it from being melted by high temperature.

[0116] Furthermore, such as Figure 3 As shown, in some embodiments, the first air outlet 311 has an annular cross-section, and the first air guide 313 is configured as an annular baffle arranged circumferentially along the first air outlet 311, with the air guide surface of the annular baffle intersecting the central axis.

[0117] In other words, the end of the first housing 31 with the first air outlet 311 is not connected to the end of the sleeve body on the same side, so that the cooling gas can be evenly ejected from the annular first air outlet 311. The first air guide 313 can be configured as a conical platform to block all the cooling gas and change the flow pattern of the cooling gas.

[0118] In this way, not only can the cooling gas be blown evenly on the lens 12 to remove dust and ensure that the outer surface of the lens 12 is clean, but it can also evenly remove the heat from the surface of the lens 12, thereby preventing the lens 12 from cracking due to uneven surface temperature.

[0119] To facilitate connection, a portion of the end of the tube sleeve can be connected to the end of the first housing 31, so that the cross-section of the first air outlet 311 is partially annular and surrounds the periphery of the lens 12.

[0120] Furthermore, the end of the sleeve is integrally connected to the end of the first housing 31, and one or more through-holes 311 are provided at the connection. The first air outlets 311 are connected to the first cooling chamber 314; all or part of the first air outlets 311 can be evenly distributed around the lens 12 in the circumferential direction. The first air guide 313 can be configured as a conical platform surrounding and covering the left side of the first air outlet 311 along the axial direction; the first air guide 313 can also be configured as a separate baffle corresponding to each first air outlet 311. In this way, the structure is relatively simple, and the blocking angle of the baffle can be adjusted in a targeted manner, so that the cooling gas can be focused on blowing the areas of the lens 12 that are prone to residue; thus extending the service life of the lens sleeve 10.

[0121] In some examples, the angle between the axes and the axial direction of each first air outlet 311 can be the same, such as parallel or inclined, or can be designed to different angles as needed, so that the gas blown out by the multiple first air outlets 311 is guided by the first air guide 313, and the gas can cover different areas on the outer surface of the lens 12 respectively, thereby ensuring that the dust can be blown away completely without residue. In addition, the multiple first air outlets 311 blow the outer surface of the lens 12 at different angles, which can evenly remove the heat from the surface of the lens 12, thereby evenly reducing the temperature of the lens 12 and preventing it from cracking due to uneven heating and cooling.

[0122] Depending on the needs, the shape of the first air outlet 311 can be a circular hole, a square hole, or a trumpet-shaped hole. By setting the shape of the first air outlet 311, the blowing rate and angle of the cooling gas can also be adjusted, so that the cooling gas can focus on blowing the areas of the lens 12 that are prone to residue, making the design more flexible.

[0123] The first air guide 313 can be a horn structure with openings at both ends, and the first air guide 313 and the other parts of the first housing 31 can be an integral structure. Of course, the first air guide 313 and the other parts of the first housing 31 can also be designed separately and connected as one unit by welding. The larger opening of the first air guide 313 can be integrally connected to the end of the first housing 31 by sheet metal or by welding; the smaller opening of the first air guide 313 is the end of the first air guide 313 away from the lens 12.

[0124] A portion of the airflow blown out from the first air outlet 311 is blocked by the plate on the side of the first air guide 313, thereby changing its direction and returning obliquely backward until it sweeps onto the lens 12; the remaining airflow is discharged through one end of the smaller opening of the first air guide 313; and since the space gradually decreases from the first air outlet 311 to the discharge, it can converge the airflow blown out from the first air outlet 311, making the gas more concentrated and faster.

[0125] In this way, external dust can be prevented from entering the first air guide 313 against the airflow direction, thereby preventing dust from adhering to the lens 12, ensuring that the outer surface of the lens 12 is clean, thus reducing the impact of dust in the graphitization furnace on observation and improving the accuracy of observation results.

[0126] It should be noted that the lens 12 can observe the interior of the graphitization furnace through the end opening of the first air guide 313. The sleeve body 11 abuts axially against the end of the first housing 31 that connects to the first air guide 313, and the gap between the two should be sealed, which can be done by threaded connection, sealant filling, etc., to prevent high-temperature gas and dust in the graphitization furnace from entering the first cooling chamber 314 in reverse, and ultimately prevent them from escaping from the first cooling chamber 314 to the external environment.

[0127] like Figure 3 As shown, in some embodiments, the camera device 100 further includes a housing 50, which covers the outside of the camera 20.

[0128] The housing 50 can be made of plastic or metal. By placing the camera 20 inside the housing 50, the housing 50 can isolate the camera from dust in the external environment, ensuring the stable operation of the camera 20.

[0129] Specifically, the cover 50 is detachably connected with the first shell 31, and a cover 50 cavity is formed inside the cover 50, and the camera 20 is arranged in the cover 50 cavity.

[0130] The connection between the cover 50 and the first shell 31 can be, but is not limited to, bolt connection, clamping.

[0131] When any of the cover 50, the first shell 31 and the camera 20 needs to be repaired or replaced, the cover 50 is removed from the first shell 31, and the damaged part can be replaced with a new part. Compared with replacing the cover 50, the first shell 31 and the camera 20 together, the maintenance cost of the camera device 100 is reduced.

[0132] Please continue to refer to Figure 3 In some embodiments, the air blowing mechanism 30 further comprises a second shell 32, which is sleeved outside the first shell 31, and the inner wall of the second shell 32 is spaced apart from the outer pipe wall of the sleeve body 11 to form a second cooling cavity 324; the second shell 32 is provided with a second air outlet 321 and a second air inlet 322 which are in communication with the second cooling cavity 324; the second air inlet 322, the second cooling cavity 324 and the second air outlet 321 together form a second cooling channel for the cooling gas to flow through.

[0133] The second shell 32 is a hollow pipe structure, which can be made of high-temperature-resistant materials such as tungsten alloy, so that it can withstand the high temperature in the graphitization furnace and has sufficient strength to support various parts.

[0134] In this way, the second shell 32 can provide a layer of protection for the sleeve body 11 and the first shell 31, thereby protecting the first lens 12 on the sleeve body 11. Secondly, the second air inlet 322, the second cooling cavity 324 and the second air outlet 321 together form a second cooling channel for the cooling gas to flow through, so that the sleeve body 11 and the first shell 31 in the second cooling cavity 324 can be cooled when the cooling gas flows through the second cooling channel, preventing the sleeve body 11 from being melted by high temperature.

[0135] In addition, the first cooling channel and the second cooling channel can be used together for cooling, the ambient temperature of the outer periphery of the first shell 31 is reduced by the second cooling channel, and the cooling gas flowing in the second cooling channel can form a heat insulation layer to isolate the high-temperature gas in the graphitization furnace from the first shell 31, so that the first cooling cavity 314 in the first shell 31 can better cool the sleeve body 11, preventing the lens sleeve 10 from being melted by high temperature, and finally effectively protecting the first lens 12.

[0136] In some embodiments, the two ends of the first shell 31 are respectively sealed with the two ends of the second shell 32. For example, the area where the second shell 32 abuts against the first shell 31 can be sealed by welding, threaded connection, or male-female plug cooperation, and can also be sealed by sealant or the like, so as to prevent the high-temperature gas and dust in the graphitization furnace from escaping from the second shell 32 to the external environment.

[0137] Further, in some embodiments, one end of the second shell 32 is located between the first air inlet 312 and the shielding piece 42, and the other end extends to the first air outlet 311; the second air inlet 322 is located on the side of the shielding piece 42 away from the first air inlet 312, and the second air outlet 321 is arranged on the same side as the first air outlet 311.

[0138] Illustratively, one end of the second shell 32 extends to the first air guide part 313, and the end is provided with the second air outlet 321. The air outlet direction of the second air outlet 321 is parallel to the air outlet direction of the first air outlet 311. Because the area where the first air outlet 311 is located is provided with the lens 12, the cooling gas discharged from the second air outlet 321 can form an air wall in the area near the lens 12, which can prevent the dust from approaching the outer mirror surface of the lens 12, and cooperate with the cooling gas blown out from the first air outlet 311 to sweep the lens 12, so as to ensure that the outer mirror surface of the lens 12 is clean and the observation is clear.

[0139] In addition, the cooling gas discharged from the second air outlet 321 forms an air wall to isolate the high-temperature gas in the graphite furnace from the mirror surface, and cooperates with the cooling gas blown out from the first air outlet 311 to take away the heat on the first lens 12, so as to reduce the temperature of the lens 12 and prevent it from being melted by high temperature.

[0140] Further, the end of the second shell 32 is also provided with a second air guide part 323, and the end of the second shell 32 and the outer peripheral part of the first air guide part 313 can be sealed by welding, threaded connection, or male-female plug cooperation, and can also be sealed by sealant or the like. The second air guide part 323 is used to guide the cooling gas discharged from the second air outlet 321 to the lens 12. The structure of the second air guide part 323 is similar to that of the first air guide part 313, and the working principle of the second air guide part 323 is also similar to that of the first air guide part 313. For the working principle of the second air guide part 323, please refer to the content described above for the first air guide part 313, which will not be described here.

[0141] As Figure 3As shown, in some embodiments, the blowing mechanism 30 further comprises a third shell 33, which is sleeved outside the second shell 32, and the inner wall of the third shell 33 is spaced from the outer pipe wall of the sleeve body 11 to form a third cooling cavity 333; the third shell 33 is provided with a third gas outlet 331 and a third gas inlet 332 which are in communication with the third cooling cavity 333; the third gas inlet 332, the third cooling cavity 333, and the third gas outlet 331 together form a third cooling channel for the cooling gas to flow through.

[0142] The third shell 33 is a hollow pipe structure, which can also be made of high-temperature-resistant materials such as tungsten alloy, so as to withstand the high temperature in the graphitization furnace and have sufficient strength to support various components.

[0143] The third shell 33 can be inserted into the through hole of the furnace wall 200, and the third shell 33 and the through hole of the furnace wall 200 can be fixed by interference fitting, welding, flange connection, and the possible gaps can be sealed by sealing materials such as asbestos. When the second shell 32 is inserted into the third shell 33, the two sides of the furnace wall 200 can be isolated from the high-temperature environment in the graphitization furnace and the external environment.

[0144] The third shell 33 is detachably sleeved outside the second shell 32. In this way, the second shell 32, the first shell 31, the lens sleeve 10, and the camera 20 can be taken off from the third shell 33 as a whole, which is convenient for the operator to maintain and repair.

[0145] In this way, the third shell 33 can provide a layer of protection for the second shell 32, the sleeve body 11, and the first shell 31, thereby protecting the first lens 12 on the sleeve body 11. Moreover, the cooling gas flowing in the third cooling channel can take away the heat on the outer circumferential side of the second shell 32, thereby achieving cooling.

[0146] In addition, the cooling gas flowing in the third cooling channel can form a heat insulation layer to insulate the high-temperature furnace wall 200 from the second shell 32, thereby insulating the first shell 31 from the external high-temperature environment, and cooperating with the cooling gas flowing in the second cooling channel and the first cooling channel to gradually cool down, so that the first cooling cavity 314 in the first shell 31 can better cool down the sleeve body 11, prevent the lens sleeve 10 from being roasted and melted by high temperature, and finally effectively protect the first lens 12.

[0147] It should be noted that the cooling gas flowing in the third cooling channel, the second cooling channel and the first cooling channel can be at different flow rates, the outermost third cooling channel absorbs the most heat, so the gas flow is also set to be the largest, the middle second cooling channel absorbs the second most heat, and the innermost first cooling channel absorbs the least heat. Of course, the flow rates of the cooling gas in the first cooling channel, the second cooling channel and the third cooling channel can also be equal, for example, the flow rates of the cooling gas injected into each cooling channel are 5m 3 / h-40m 3 / h.

[0148] The pressure of the cooling gas injected into the first cooling channel, the second cooling channel and the third cooling channel can be different. For example, the pressure of the cooling gas injected into the first cooling channel ranges from 0.1Mpa to 0.7Mpa, the pressure of the cooling gas injected into the second cooling channel ranges from 0.1Mpa to 0.45Mpa, and the pressure of the cooling gas injected into the third cooling channel ranges from 0.2Mpa to 0.7Mpa.

[0149] In this way, the cooling gas can be adjusted according to the needs to achieve better cooling.

[0150] In some examples, the length of the third shell 33 in the axial direction is generally equivalent to the thickness of the furnace wall 200, so that the length of the third shell 33 in the axial direction is shorter than the length of the second shell 32 in the axial direction.

[0151] Some embodiments of the present application also provide a graphitization furnace, which comprises a furnace body and the camera device 100 in the above-mentioned embodiments, and the camera device 100 is inserted on the furnace wall 200 of the furnace body for observing the situation inside the reaction cavity of the furnace body. Because the graphitization furnace comprises the camera device 100, the graphitization furnace has all the technical effects possessed by the camera device 100.

[0152] Please refer to Figure 4 In some embodiments, the inner wall of the furnace wall 200 is provided with a groove, and the lens 12 is located at the bottom of the groove.

[0153] In Figure 4 In the example shown, the inner wall of the furnace wall 200 is formed with a groove, and the lens 12 is located at the bottom of the groove. In this way, the lens 12 can have a larger viewing angle to observe the picture inside the graphitization furnace, thereby facilitating the operator to observe the coking situation inside the graphitization furnace in time, so as to better control the process of the conversion of carbonaceous materials.

[0154] In the embodiments provided in the present application, the observation angle of the lens 12 ranges from 55° to 127°. Of course, in other embodiments, the observation angle of the lens 12 can be adjusted adaptively.

[0155] In some embodiments, the end of the lens sleeve 10 with the lens 12 can penetrate the furnace wall 200 and enter the reaction chamber. Along the axial direction of the lens sleeve 10, the distance between the end entering the reaction chamber and the outer wall of the furnace wall 200 is L1, the wall thickness of the furnace wall 200 is L2, and the ratio between L1 and L2 ranges from 1:1 to 1.5:1.

[0156] In other words, the sleeve 11 enters the furnace wall 200, and the end of the lens 12 is flush with the inner wall of the furnace wall 200. Alternatively, the end of the lens 12 protrudes relative to the inner wall of the furnace wall 200, but the length of the protrusion is within a certain range.

[0157] Because the temperature inside the furnace is very high, controlling the length of the lens 12 protruding relative to the furnace wall 200 can reduce the probability of the lens 12 being damaged by high-temperature melting.

[0158] like Figure 3 As shown, in one specific embodiment, the camera device 100 includes a lens sleeve 10, a camera 20, an air blowing mechanism 30, and a protective mechanism 40. The lens sleeve 10 includes a sleeve body 11 and a lens 12, with the lens 12 disposed at one end of the sleeve body 11; the camera 20 is disposed at the end of the sleeve body 11 away from the lens 12; the air blowing mechanism 30 is capable of blowing and sweeping the lens 12; the protective mechanism 40 includes a mounting member 41, a blocking member 42, and a driving member 44.

[0159] When the camera device 100 is in normal use, the end of the sleeve 11 with the lens 12 extends into the furnace wall 200 under the drive of the drive member 44, and the camera 20 can obtain the working status inside the graphitization furnace. At this time, the channel in the mounting member 41 is unobstructed, and the gas blown out by the air blowing mechanism 30 can reach the lens 12 through the mounting member 41.

[0160] During prolonged observation, dust from the graphitization furnace slowly adheres to the outer surface of the lens 12 facing away from the camera 20, causing the image viewed by the camera 20 through the lens 12 to become blurry. The air blowing mechanism 30 can clean the outer surface of the lens 12; thus, it ensures that the dust adhering to the outer surface of the lens 12 is removed by the air blowing mechanism 30, ensuring the outer surface of the lens 12 is clean, thereby reducing the impact of dust from the graphitization furnace on observation and improving the accuracy of the observation results. Furthermore, the airflow generated by the air blowing mechanism 30 can also remove heat from the lens 12, thereby lowering the temperature of the lens 12 and preventing it from melting due to high temperatures.

[0161] When the sleeve body 11 moves towards the direction of exiting the furnace wall 200, the driving member 44 drives the sleeve body 11 to move relative to the mounting member 41, when the end of the lens moves to the vicinity of the blocking member 42, the blocking member 42 starts to operate and blocks the passage of the mounting member 41 for the lens 12 to pass through. At this time, the air blowing mechanism 30 and the air outside cannot enter the furnace wall 200 through the mounting member 41.

[0162] In this way, the air outside cannot enter the furnace wall 200 through the mounting member 41, and the pressure in the furnace body can be in a relatively stable state, thereby reducing the probability that a large amount of air outside is sucked into the furnace body, thereby reducing the quality of the final product obtained.

[0163] In this way, the sleeve body 11 reciprocally moves relative to the mounting member 41, thereby continuously inserting or leaving the furnace wall 200, and the blocking member 42 continuously blocks or does not block the passage between the mounting member 41 and the furnace wall 200.

[0164] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0165] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent application of the present application should be subject to the appended claims.

Claims

1. An image pickup device, characterized by comprising: The application relates to a lens sleeve and a camera device. The lens sleeve comprises a sleeve body and a lens arranged at one end of the sleeve body. A camera is arranged at the other end of the sleeve body. A blowing mechanism is arranged to blow the lens. A protection mechanism comprises a mounting member and a shielding member. When the lens sleeve is arranged at the mounting member, the shielding member is opened relative to the mounting member, and the mounting member, the lens and the blowing mechanism are connected. When the lens sleeve is switched from the first state to the second state, the lens moves relative to the mounting member, and the shielding member blocks the channel of the mounting member for the lens.

2. The camera of claim 1, wherein The mounting member is arranged outside the sleeve body, and at least part of the shielding member is arranged inside the mounting member.

3. The camera of claim 2, wherein, The shielding member is arranged as a plate structure, and comprises a first end and a second end.

4. The camera of claim 1, wherein The first end is connected to the inner wall of the mounting member, and the second end is capable of abutting against the sleeve body and deflecting around the first end when the sleeve body moves.

5. The camera of claim 1, wherein The protection mechanism further comprises a base and a driving member. One end of the driving member is movably connected to the guide part of the base, and the other end is connected to the sleeve body and drives the sleeve body to move relative to the mounting member. The blowing mechanism comprises a first shell arranged outside the sleeve body.

6. The camera of claim 5, wherein, The inner wall of the first shell and the outer wall of the sleeve body form a first cooling cavity.

7. The camera of claim 6, wherein, The first shell is provided with a first air outlet and a first air inlet.

8. The camera of claim 5, wherein, The first air inlet, the first cooling cavity and the first air outlet form a first cooling channel.

9. The camera of claim 8, wherein, The lens is arranged on the same side of the first air outlet.

10. The camera of claim 5, wherein, The air outlet direction of the first air outlet is parallel to the central axis of the sleeve body. The first shell comprises a first air guide part. The first air outlet has a cross section in the shape of a ring. The first air guide part is arranged as a ring-shaped baffle along the circumference of the first air outlet. The air guide surface of the ring-shaped baffle intersects with the central axis. The camera device further comprises a cover shell arranged outside the camera. The cover shell is detachably connected to the first shell. The cover shell is provided with the camera. The blowing mechanism further comprises a second shell arranged outside the first shell. The inner wall of the second shell and the outer wall of the sleeve body form a second cooling cavity. The second shell is provided with a second air outlet and a second air inlet. The second air inlet, the second cooling cavity and the second air outlet form a second cooling channel.

11. The camera of claim 10, wherein, One end of the second shell is located between the first air inlet and the shielding piece, and the other end extends to the first air outlet; The second air inlet is located on the side of the shielding piece away from the first air inlet, and the second air outlet is arranged on the same side as the first air outlet.

12. The camera of claim 10, wherein, The air blowing mechanism further comprises a third shell, which is sleeved outside the second shell, and the inner wall of the third shell and the outer pipe wall of the sleeve body form a third cooling cavity; A third air outlet and a third air inlet are formed on the third shell and communicate with the third cooling cavity; The third air inlet, the third cooling cavity, and the third air outlet jointly form a third cooling channel for cooling gas circulation.

13. A graphitization furnace characterized by, The camera device as claimed in any one of claims 1-12 is inserted into the furnace wall of the furnace body for observing the situation inside the reaction cavity of the furnace body.

14. The graphitization furnace of claim 13, wherein, The inner wall of the furnace wall is provided with a groove, and the lens is located at the bottom of the groove.

15. The graphitization furnace of claim 13, wherein, The lens sleeve is provided with an end portion of the lens, which can pass through the furnace wall into the reaction cavity. Along the axial direction of the lens sleeve, the distance between the end portion entering the reaction cavity and the outer wall of the furnace wall is L1, and the wall thickness of the furnace wall is L2, and the ratio between L1 and L2 is in the range of 1:1 to 1.5:1.

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