CN220067539U - Image pickup device, graphitizing furnace and battery production equipment - Google Patents

Abstract

The application relates to a camera device, a graphitizing furnace and battery production equipment, comprising: the lens sleeve comprises a sleeve body and a first lens, wherein the first lens is arranged at one end of the sleeve body; the camera is arranged at the other end of the sleeve body, which is far away from the first lens; and an air blowing device capable of blowing the first lens. The image pickup device, the graphitizing furnace and the battery production equipment have the advantage of accurate observation.

Description

Image pickup device, graphitizing furnace and battery production equipment

Technical Field

The application relates to the technical field of battery production, in particular to a camera device, a graphitization furnace and battery production equipment.

Background

When graphite materials are produced by a graphitization furnace, if the thermodynamically unstable carbonaceous materials are stably converted into graphite materials, the core temperature in the furnace body of the graphitization furnace needs to be controlled within a certain temperature range. The carbonaceous material reacts in the furnace body through the heating temperature, and coking is easy to occur on the surface of the carbonaceous material with improper temperature control, thereby influencing the conversion rate and quality. For this reason, it is necessary to observe the coking condition in the graphitization furnace by the observation device.

However, since a large amount of dust is easily generated in the furnace body of the graphitization furnace due to the occurrence of the reaction, the observation device is easily affected by the dust when performing the observation measurement, and thus the observation is inaccurate.

Disclosure of Invention

Based on this, it is necessary to provide an imaging device, a graphitization furnace, and a battery production facility, in order to solve the problem of inaccurate observation.

A first aspect of the present utility model provides an image pickup apparatus including: the lens sleeve comprises a sleeve body and a first lens, and the first lens is arranged at one end of the sleeve body; the camera is arranged at the other end of the sleeve body, which is far away from the first lens; and an air blowing device capable of blowing the first lens.

According to the technical scheme, the first lens is arranged at one end of the sleeve body, the camera is arranged at the other end of the sleeve body, which is far away from the first lens, and the air blowing device can blow the first lens; thereby ensure that the dust that is stained with on the outer mirror surface of first lens can be swept away by blowing device, ensure that the outer mirror surface of first lens is clean to can reduce the influence of dust in the graphitization stove to observing, improve the degree of accuracy of observation result. In addition, the air flow formed by the air blowing device can also take away the heat on the first lens, so that the temperature of the first lens is reduced, and the first lens is prevented from being melted by high-temperature roasting.

In one embodiment, the air blowing device comprises a first shell, and the sleeve body is sleeved in the first shell; the inner wall of the first shell and the outer pipe wall of the sleeve body are separated to form a first cooling cavity; the first shell is provided with a first air outlet and a first air inlet which are communicated with the first cooling cavity; the first air inlet, the first cooling cavity and the first air outlet jointly form a first cooling channel through which cooling air can flow.

According to the technical scheme, the first shell is arranged, so that on one hand, the first shell can protect the sleeve body, and further the first lens on the sleeve body is protected. On the other hand, the first air inlet, the first cooling cavity and the first air outlet jointly form a first cooling channel through which cooling air can circulate, and when the cooling air circulates in the first cooling channel, the cooling air can cool the lens sleeve in the first cooling cavity, so that the lens sleeve is prevented from being melted by high-temperature roasting.

In one embodiment, an end of the sleeve body, which is close to the first lens, is abutted against the end of the first shell, and the first lens is flush with the first air outlet along the central axis; the first shell comprises an air guide part, the air guide part is arranged at the end part of the first air outlet, and air flow blown out from the first air outlet can be guided to the first lens through the air guide part.

In the technical scheme of the embodiment of the application, the first air outlet is aligned to all or part of the air guide part through the air guide part arranged at the end part of the first shell, so that the air blown out from the first air outlet can be blown onto the air guide part, and the flowing direction of the air is changed through the blocking of the air guide part; dust stained on the outer mirror surface of the first lens can be purged by gas, so that the outer mirror surface of the first lens is clean, the influence of dust in the graphitization furnace on observation can be reduced, and the accuracy of an observation result is improved; the air blown onto the outer mirror surface can also take away the heat on the first lens, thereby reducing the temperature of the first lens and preventing the first lens from being melted by high-temperature roasting.

In one embodiment, the air guiding part is a baffle plate circumferentially arranged at the first air outlet, and the plate surface of the air guiding part intersects with the central shaft.

In one embodiment, an end plate is disposed at an end of the first housing away from the first lens, and the end of the sleeve body away from the first lens includes a connecting portion, the connecting portion penetrates out of the end plate, and the connecting portion is detachably connected with the camera.

In the technical scheme of the embodiment of the application, the connecting part is arranged to be connected with the camera, and the first lens and the connecting part are respectively positioned at the positions of the two sides of the end plate; the connecting part is connected with the camera, and the working state picture in the graphitizing furnace is transmitted along the sleeve body through the first lens and is transmitted to the camera through the connecting part; an operator can observe the coking condition in the graphitization furnace in time through the camera so as to control the process of converting the carbonaceous materials better.

In one embodiment, the camera device comprises a housing, wherein the housing is covered on one side of the end plate, which is close to the camera, so as to form a housing cavity in a surrounding manner; the first air inlet penetrates through the end plate and is communicated with the housing cavity; the connecting part and the camera are arranged in the housing; the housing is provided with an air inlet nozzle which is connected with the housing cavity and the outside.

According to the technical scheme, the first air inlet is communicated with the housing cavity, the housing is provided with the air inlet nozzle which is connected with the housing cavity and the outside, and the cooling air can take away heat on the camera which normally works in the flowing process from the air inlet nozzle, so that cooling is provided; then the cooling gas enters the first cooling cavity from the first air inlet and flows out from the first air outlet; realize cooling treatment to the sleeve pipe body and first lens.

In one embodiment, the air blowing device comprises a second shell, and the second shell is sleeved outside the first shell; the inner wall of the second shell is separated from the outer tube wall of the first shell to form a second cooling cavity; a second air outlet and a second air inlet which are communicated with the second cooling cavity are formed in the second shell; the second air inlet, the second cooling cavity and the second air outlet jointly form a second cooling channel through which cooling air can flow.

According to the technical scheme, the second shell is arranged, so that on one hand, the second shell can play a role in protecting the sleeve body and the first shell, and further the first lens on the sleeve body is protected. On the other hand, the second air inlet, the second cooling cavity and the second air outlet jointly form a second cooling channel through which cooling air flows, and when the cooling air flows in the second cooling channel, the sleeve body and the first shell body in the second cooling cavity can be cooled, so that the sleeve body is prevented from being melted by high-temperature roasting.

In one embodiment, one end of the second housing abuts against the end plate, and the other end of the second housing extends until reaching the air guiding portion; the second air inlet is arranged in the area, close to the end plate, of the second shell; the second air outlet is arranged at the end part of the second shell close to the air guide part.

In the technical scheme of the embodiment of the application, the second air outlet is arranged at the end part of the second shell close to the air guide part, and the cooling air discharged from the second air outlet forms an air wall to prevent dust from approaching to the outer mirror surface of the first lens.

In one embodiment, the air blowing device comprises a third shell, and the third shell is detachably sleeved outside the second shell; the inner wall of the third shell and the outer tube wall of the second shell are separated to form a third cooling cavity; a third air outlet and a third air inlet which are communicated with the third cooling cavity are formed in the third shell; the third air inlet, the third cooling cavity and the third air outlet jointly form a third cooling channel through which cooling air can flow.

According to the technical scheme provided by the embodiment of the application, the third shell is arranged, so that on one hand, the cooling gas flowing in the third cooling channel takes away the heat at the outer periphery of the second shell, and the cooling is realized; on the other hand, the cooling gas flowing in the third cooling channel can form a heat insulation layer to isolate the high-temperature furnace wall from the second shell, further isolate the first shell from the external high-temperature environment, and then cooperate with the second cooling channel and the cooling gas flowing in the first cooling channel to gradually cool down, so that the first cooling cavity in the first shell can cool down and cool down the sleeve body better, the lens sleeve is prevented from being roasted and melted at high temperature, and the first lens is effectively protected.

In one embodiment, the image pickup device comprises a control valve and a plug bush connected with the control valve; the second shell sequentially penetrates through the control valve and the plug bush, and a gap is reserved between the plug bush and the second shell; the plug bush is detachably connected with the third shell; the gap communicates the third cooling chamber with the control valve.

In the technical scheme of the embodiment of the application, when the second shell is required to be removed from the third shell, the control valve is opened so as to communicate the external environment with the gap, and further the external environment with the third cooling cavity, so that the internal pressure and the external pressure are balanced; the second shell, the first shell, the lens sleeve, the camera, the control valve and the plug bush are conveniently taken as a whole and taken down from the third shell; the operation staff can conveniently maintain and overhaul.

In one embodiment, the lens sleeve includes a second lens disposed at an end of the sleeve body distal from the first lens.

The second aspect of the application provides a graphitizing furnace, which comprises a reaction cavity and the camera device, wherein the camera device is inserted into the furnace wall of the reaction cavity and used for observing the condition in the reaction cavity.

In one embodiment, the furnace wall is formed with a recess, and the first lens is at a bottom of the recess.

A third aspect of the present application provides a battery production apparatus comprising the graphitization furnace described above.

Drawings

Fig. 1 is an internal configuration diagram of an image pickup apparatus according to an embodiment of the present application;

FIG. 2 is an enlarged view of part of A of FIG. 1;

FIG. 3 is a block diagram of one embodiment of the B-B cross-section of FIG. 2;

FIG. 4 is a block diagram of another embodiment of the B-B cross-section of FIG. 2;

fig. 5 is a schematic structural diagram of an image capturing apparatus according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a graphitizing furnace according to an embodiment of the present application;

reference numerals illustrate:

the device comprises a camera device-100, a sleeve body-11, a first lens-12, a connecting part-13, a second lens-14, a third lens-15, a camera head-20, a blowing device-30, a first shell-31, a first cooling cavity-311, a first air outlet-312, a first air inlet-313, an air guiding part-314, an end plate-315, a housing-40, an air inlet nozzle-41, a housing cavity-42, a second shell-33, a second cooling cavity-331, a second air outlet-332, a second air inlet-333, a third shell-34, a third cooling cavity-341, a third air outlet-342, a third air inlet-343, a control valve-50, a plug bush-51, a gap-52, a reaction cavity-200 and a groove-211.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The carbon atoms of the carbonaceous material are irregularly arranged, and only through high-temperature heat treatment, the carbon atoms are recrystallized and rearranged to form a crystal structure of graphite, so that the graphite has excellent performances such as electrical conductivity, thermal conductivity, chemical stability and thermal stability. Therefore, it is required to convert carbonaceous materials into artificial graphite materials by a graphitization furnace in order to apply the graphite materials to the production and preparation of battery materials.

In the reaction process, the core temperature in the graphitization furnace needs to be controlled between a certain temperature to enable the carbonaceous material to be stably converted into the graphite material. Specifically, the temperature differs from the nature of the carbonaceous material itself, the type of process used, and the time. During the conversion process, coking is likely to occur on the surface of the carbonaceous material, thereby affecting the conversion rate and quality. For this reason, it is necessary to observe the coking conditions inside the graphitization furnace, often by means of observation devices, in order to better control the process of carbonaceous material conversion.

In the related art, a part of graphitizing furnaces adopt a high-temperature camera system to observe the interior of the graphitizing furnaces, and the high-temperature camera system is cooled in a liquid cooling mode; however, this design always involves the risk of liquid leaking into the graphitization furnace, liquid impurities can affect the conversion of carbonaceous material into graphite material and can also cause an explosion in the graphitization furnace, increasing unsafe factors.

The other part of graphitizing furnace directly gives up the high-temperature camera system, but the observation port is arranged on the graphitizing furnace, and the coking condition of the surface of the carbonaceous material in the furnace is observed with naked eyes by opening the observation port; however, such design can lead to air from the external environment entering the graphitization furnace, resulting in unacceptable product quality.

In addition, there is a lot of dust because of the reaction in the graphitization furnace. When observation is performed, dust adheres to the imaging system, which affects the observation result.

Based on the above considerations, in order to improve the accuracy of observation, one or more embodiments of the present application provide an imaging device, in which an air flow can be used to cool the imaging device during imaging, so as to avoid burning out the imaging device at a high temperature, and meanwhile, the air flow is used to directly purge the lens, so that dust attached to the lens can be removed in time, thereby reducing the influence of dust in the graphitization furnace on observation and improving the accuracy of observation results.

The camera device disclosed by the embodiment of the application can be used in high-temperature furnaces such as graphite, glass, ceramic, steel, cement, crystal growth and the like, but is not limited to the camera device. The imaging device disclosed by the application can be used as an observation part of the graphitization furnace, so that the imaging device is not easily affected by dust during observation and measurement, the observation accuracy is ensured, and the operator can know the coking condition inside the graphitization furnace at any time.

The embodiment of the application also provides a battery production device which can be used for producing secondary batteries or primary batteries but is not limited to the battery production device; but not limited to, lithium sulfur battery, sodium ion battery or magnesium ion battery.

The following examples are presented for convenience of explanation, taking the graphitization furnace of the present application as an example.

The graphitizing furnace is generally composed of a furnace body, a heating device, a camera device, a feeding device, a discharging device and an air extracting device; the heating device is used for heating the furnace body so as to raise the temperature of the furnace body to the corresponding reaction temperature and maintain the temperature; the furnace wall of the furnace body is provided with a heat preservation structure; the furnace body is provided with a reaction cavity; the feeding device is communicated with the reaction cavity so as to input carbonaceous materials, corresponding auxiliary materials and the like into the reaction cavity; the camera device can be inserted on the furnace wall of the reaction chamber to observe the coking condition of the material surface, the oxidation combustion condition of the material surface, the burning condition of auxiliary materials and the like; the discharging device is communicated with the reaction cavity and is used for discharging the reacted graphite; the air extractor is communicated with the reaction cavity and is used for exhausting waste gas and miscellaneous gas generated by the reaction, so as to ensure good reaction atmosphere. In addition, the graphitization furnace may further comprise a gas blowing device for blowing an inert gas, such as nitrogen, into the reaction chamber; thereby covering the materials in the reaction furnace and preventing the materials from reacting with impurity gas and water vapor.

The first aspect of the present application provides an image pickup apparatus 100.

Referring to fig. 1 to 5, the image pickup apparatus 100 includes a lens sleeve 10, a camera 20, and an air blowing apparatus 30.

The lens sleeve 10 includes a sleeve body 11 and a first lens 12, wherein the first lens 12 is disposed at one end of the sleeve body 11. The camera 20 is disposed at the other end of the sleeve body 11 away from the first lens 12. The blowing device 30 is capable of blowing the first lens 12.

Specifically, the sleeve body 11 is a hollow tube structure with two open ends and a hollow interior, and can be made of a high-temperature resistant material, such as tungsten alloy, so that the sleeve body can bear the higher temperature in the graphitization furnace, does not melt, and has certain strength enough to support each component. The first lens 12 is arranged at one end of the sleeve body 11; that is, the pipe wall at the end of the sleeve body 11 can wrap the first lens 12, and the peripheral side of the first lens 12 is bonded and sealed with the port of the sleeve body 11, so as to prevent the 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 first lens 12 facing the camera 20 can be ensured, so that the inner mirror surface of the first lens 12 does not need to be cleaned, and high-temperature gas and dust can be prevented from reaching the camera 20 along the sleeve body 11.

The camera 20 is arranged at the other end of the sleeve body 11 far away from the first lens 12; in this way, the camera 20 is kept away from the high-temperature graphitization furnace as far as possible, so that high-temperature damage is avoided. The first lens 12 is disposed at the end of the sleeve body 11 and penetrates into the furnace wall 210 (mentioned below), the first lens 12 being closer to the carbonaceous material at high temperature, and the first lens 12 being located at one end less restricted by the furnace wall 210 than at the other end, thereby ensuring a larger viewing angle range of the first lens 12; the camera 20 is arranged at the other end of the sleeve body 11, so that the damage caused by high temperature is avoided, the picture inside the graphitization furnace can be received through the first lens 12, and the picture is displayed, so that an operator can observe the coking condition inside the graphitization furnace in time, and the process of converting the carbonaceous materials can be controlled better.

During long viewing times, dust in the graphitization furnace may slowly adhere to the outer mirror surface of the first lens 12 facing away from the camera 20, thereby causing blurring of the view being observed by the camera 20 through the first lens 12. The air blowing device 30 is capable of blowing the outer mirror surface of the first lens 12; in this way, the dust stained on the outer mirror surface of the first lens 12 can be purged by the blowing device 30, and the outer mirror surface of the first lens 12 is ensured to be clean, so that the influence of the dust in the graphitization furnace on observation can be reduced, and the accuracy of the observation result is improved. In addition, the air flow formed by the air blowing device 30 can also take away the heat on the first lens 12, so that the temperature of the first lens 12 is reduced, and the first lens is prevented from being melted by high-temperature baking.

Optionally, the peripheral side of the first lens 12 and the port of the sleeve body 11 may be filled with a high-temperature-resistant sealant to realize sealing connection.

Alternatively, the first lens 12 may be an infrared-filtering quartz glass lens; the infrared-filtering quartz glass lens can effectively reduce infrared rays radiated at high temperature, avoid overexposure of the camera 20 and enable the camera 20 to clearly obtain the working state in the graphitization furnace; meanwhile, the infrared filtering quartz glass lens can isolate the damage of hot gas in the furnace and high-temperature radiation electromagnetic waves to the camera 20; alternatively, to obtain an infrared-filtering quartz glass lens, an infrared cut-off film may be plated on the outer surface layer of quartz glass; an infrared-filtering glass layer, such as Schottky BG62 glass, can also be added on the outer surface of the quartz glass.

Optionally, the camera 20 of the embodiment of the present application can obtain a working state picture in the graphitizing furnace, and convert the obtained video and image signals into optical signals and transmit the optical signals to a corresponding display screen, where the display screen may be directly integrated on the camera 20 or the display screen is connected with the camera 20 through a data line in a signal transmission manner.

Alternatively, the gas blown out by the blowing device 30 of the embodiment of the present application is an inert gas. Such as nitrogen, etc., thereby providing atmospheric protection to the carbonaceous material being converted and preventing the probability of the carbonaceous material reacting with other components in the air.

In some embodiments, referring to fig. 1 and 2, the blowing device 30 includes a first housing 31, and the sleeve 11 is sleeved in the first housing 31. The first housing 312 is a hollow tube structure, and may be made of a material with high temperature resistance, such as tungsten alloy, so that the first housing can withstand the high temperature in the graphitization furnace and has a certain strength enough to support the components.

The front end of the sleeve body 11, that is, the end of the sleeve body 11 to which the first lens 12 is attached; the front end of the sleeve body 11 is inserted until abutting against the bottom end of the first housing 31. The rear end of the sleeve body 11, that is, the sleeve body 11 is close to the other end of the camera 20; the rear end of the sleeve body 11 extends outwards from the first shell 31 for a certain distance, and a part of section of the sleeve body 11 is sleeved in the first shell 31; both ends of the first housing 31 are respectively sealed with sections of the inserted sleeve body 11 to prevent high-temperature gas and dust in the graphitization furnace from escaping from the first housing 31 into the external environment.

The inner wall of the first housing 31 is spaced apart from the outer tube wall of the sleeve body 11 to form a first cooling cavity 311. The first housing 31 is provided with a first air outlet 312 and a first air inlet 313 communicating with the first cooling chamber 311. The first inlet 313, the first cooling chamber 311, and the first outlet 312 together form a first cooling passage through which cooling gas flows.

On the other hand, the first housing 31 can protect the sleeve 11, and thus the first lens 12 on the sleeve 11. On the other hand, the first air inlet 313, the first cooling cavity 311, and the first air outlet 312 together form a first cooling channel through which cooling air flows, and when the cooling air flows in the first cooling channel, the cooling air can cool the lens sleeve 10 located in the first cooling cavity 311, so as to prevent the lens sleeve 10 from being melted by high-temperature baking.

In particular, in cooling the lens sleeve 10, the cooling gas used may be an oxygen-free gas, such as an inert gas, e.g., nitrogen. Nitrogen is introduced into the first cooling chamber 311 from the first gas inlet 313, and then flows along the first cooling chamber 311; at the same time, nitrogen takes away the heat of the outer peripheral side of the sleeve body 11 of the lens sleeve 10, thereby realizing cooling.

In addition, the sleeve body 11 is sleeved in the first shell 31; the circumferential side of the sleeve body 11 can be protected by the first housing 31.

In some embodiments, the first air outlet 312 may be aligned with the first lens 12. That is, the air outlet direction of the first air outlet 312 intersects with the outer mirror surface of the first lens 12 facing away from the camera 20, and the nitrogen gas discharged from the first air outlet 312 is directly sprayed onto the outer mirror surface of the first lens 12, so that on one hand, dust stained on the outer mirror surface of the first lens 12 can be purged by the blowing device 30, the outer mirror surface of the first lens 12 is ensured to be clean, and on the other hand, the nitrogen gas can also take away heat on the first lens 12, thereby reducing the temperature of the first lens 12 and preventing the first lens from being melted by high-temperature baking.

In other embodiments, referring to fig. 1 to 4, an end of the sleeve body 11 near the first lens 12 abuts against an end of the first housing 31, and the first lens 12 is flush with the first air outlet 312 along the central axis. The first housing 31 includes an air guide portion 314, the air guide portion 314 being provided at an end portion of the first air outlet 312, and the air flow blown out from the first air outlet 312 can be guided to the first lens 12 through the air guide portion 314.

That is, the direction of the air outlet of the first air outlet 312 is parallel to the axis of the sleeve body 11, and the air is blown out from the first air outlet 312 leftwards along the direction of the central axis in combination with the orientation of fig. 1, and the flowing direction of the air is perpendicular to the first lens 12, but the air does not want to intersect with the outer lens, but is around the outer lens. At this time, the first air outlet 312 is aligned with all or part of the air guide 314 by the air guide 314 provided at the end of the first housing 31, so that the air blown out from the first air outlet 312 can be blown onto the air guide 314, and the flow direction of the air is changed by the blocking of the air guide 314, for example, the air horizontally leftward in the direction of the central axis is returned obliquely rearward after encountering the air guide 314, and the refracted air can be blown over a larger area; therefore, the gas is finally blown onto the first lens 12, so that dust stained on the outer mirror surface of the first lens 12 can be blown away by the gas, the outer mirror surface of the first lens 12 is ensured to be clean, the influence of dust in the graphitization furnace on observation can be reduced, and the accuracy of an observation result is improved. In addition, the air blown onto the outer mirror surface can also take away the heat on the first lens 12, thereby reducing the temperature of the first lens 12 and preventing it from being melted by the high-temperature baking.

Alternatively, referring to fig. 2 and 4, the cross section of the first air outlet 312 may be annular, and the first air outlet 312 is disposed around the first lens 12. In this way, the end of the shroud 11 and the end of the first casing 31 are not adhered to each other, and the cooling gas can be uniformly discharged from the annular first gas outlet 312.

The air guide part 314 is set to be a conical table surface, so that cooling air can be uniformly blown on the first lens 12 to take away dust, the outer lens surface of the first lens 12 is clean, and in addition, heat on the surface of the first lens 12 can be uniformly taken away, so that the situation that the first lens 12 is cracked due to uneven surface temperature and heat is prevented.

In addition, for convenience of connection, the end of the sleeve body 11 and the end of the first housing 31 may be integrally connected by a partial area, so that the cross section of the first air outlet 312 is a partial annular section and is surrounded on the peripheral side of the first lens 12.

Alternatively, referring to fig. 2 and 3, the end of the shroud 11 is integrally connected to the end of the first housing 31, and one or more first air outlets 312 are provided therethrough at the connection portion thereof. The first air outlet 312 is communicated with the first cooling cavity 311; all of the first air outlets 312 or a portion of the first air outlets 312 may be circumferentially uniformly distributed around the first lens 12. The air guiding portion 314 may be configured as a conical mesa circumferentially covering the axial left side of the first air outlet 312; the air guide portion 314 may also be provided as an independent baffle corresponding to each first air outlet 312, so that the structure is simpler, and the blocking angle of the baffle can be adjusted in a targeted manner, so that the cooling gas can be subjected to important purging for the area where the first lens 12 is easy to remain; the life of the lens sleeve 10 is extended.

Optionally, the included angles between the axes and the axial directions of the first air outlets 312 may be the same, for example, parallel or inclined, or may be designed to be different angles according to needs, so that the air blown out by the first air outlets 312 is guided by the air guiding portion 314, and the air can cover different areas on the outer mirror surface of the first lens 12, so as to ensure that dust can be thoroughly blown without residue.

According to the requirement, the shape of the first air outlet 312 can be a circular hole, a square hole or a trumpet-shaped hole, and the blowing rate and the blowing angle of the cooling air can be adjusted by setting the shape of the first air outlet 312, so that the cooling air can be mainly blown to the area where the first lens 12 is easy to remain, and the design is more flexible.

In some embodiments, referring to fig. 1 and 2, the air guiding portion 314 may be a baffle circumferentially disposed at the first air outlet 312, and a plate surface of the air guiding portion 314 intersects with the central axis. The air guiding part 314 may be a horn structure with two open ends. One end of the air guiding portion 314 with a larger size is opened, and the air guiding portion and the end of the first housing 31 can be integrally connected by adopting metal plates, or can be welded; one smaller end of the air guide 314 is open, that is, one end of the air guide 314 far away from the first lens 12, and a part of air flow blown out by the first air outlet 312 is blocked by a plate body at the side part of the air guide 314, so that the direction is changed to return obliquely backward until the air is blown onto the first lens 12; the rest of the air flow is discharged through the smaller opening end of the air guide 314; and because blow out from first gas outlet 312, to the discharge, the space is the gradual reduction, can play the effect of gathering to the air current that first gas outlet 312 blown out for the gas is more concentrated, and the speed is faster, so, can prevent outside dust to enter into wind-guiding portion 314 inside against the air current wind direction, and then can prevent that the dust from adhering to on first lens 12, ensures that the external mirror of first lens 12 is clean, thereby can reduce the influence of dust in the graphitization stove to the observation, improves the degree of accuracy of observation result.

The first lens 12 can observe the inside of the graphitization furnace through the end opening of the air guide 314. The sleeve body 11 is abutted to the end part of the first shell 31, connected with the air guide part 314, in the axial direction, a gap between the sleeve body and the first shell should be sealed, and threaded connection, sealant filling and the like can be adopted, so that high-temperature gas and dust in the graphitization furnace are prevented from reversely entering the first cooling cavity 311, and finally escape from the first cooling cavity 311 to the external environment is avoided.

In the various embodiments of the present application, the extending direction of the central axis of the sleeve body 11 is defined as an axial direction, and the first housing 31 is coaxial with the sleeve body 11.

Alternatively, the wind guiding part 314 may be integrally formed as a horn structure with two open ends. The air guide 314 is integrally formed with the other part of the first housing 31. Of course, the air guiding portion 314 and other parts of the first housing 31 may be designed separately and integrally connected by welding.

Alternatively, the air guiding part 314 may be a reflective plate having a smooth curved surface; the smooth curved surface of the reflecting plate is aligned with the first air outlet 312, and the air aligned with the first air outlet 312 can deflect 90-180 degrees through the guiding of the smooth curved surface, so that the air can be blown onto the first lens 12.

In some embodiments, referring to fig. 1 to 5, an end plate 315 is disposed at an end of the first housing 31 away from the first lens 12, so that the sleeve body 11 is disposed on the end plate 315, and a sealing process, such as a welding seal, a thread seal, or the like, is used for connecting the two parts.

The end of the sleeve body 11 remote from the first lens 12 protrudes from the end plate 315 and is configured as a connecting portion 13; that is, the end of the sleeve body 11 away from the first lens 12 includes a connecting portion 13, and the connecting portion 13 passes out of the end plate 315; the first lens 12 and the connecting part 13 are respectively positioned at the two sides of the end plate 315; the connecting part 13 is connected with the camera 20, and the working state picture in the graphitization furnace is transmitted along the sleeve body 11 through the first lens 12 and is transmitted to the camera 20 through the connecting part 13. An operator can observe the coking condition in the graphitization furnace in time through the camera 20 so as to control the process of converting the carbonaceous material better.

The connection part 13 and the camera 20 can be detachably connected in a bolt connection, clamping connection, inserting connection and the like according to the requirements, and the connection part is detached in azimuth for maintenance and replacement; of course, the connection part 13 and the camera 20 may be directly fixed by welding.

In some embodiments, referring to fig. 1 to 5, the image pickup apparatus includes a housing 40, where the housing 40 is disposed on a side of the end plate 315 near the camera 20; a housing cavity 42 is defined between the housing 40 and the end plate 315; the connecting part 13 and the camera 20 are arranged in the housing cavity 42 of the housing 40;

The first air inlet 313 is provided through the end plate 315, and the first air inlet 313 communicates with the housing cavity 42. As such, the first gas inlet 313 is provided on the end plate 315, and the cooling gas within the housing chamber 42 is introduced into the first cooling chamber 311 from the first gas inlet 313 on the end plate 315 and flows out from the first gas outlet 312; the sleeve body 11 and the first lens 12 are cooled.

The housing 40 has an air inlet nozzle 41 thereon connecting the housing cavity 42 with the exterior, the air inlet nozzle 41 being in communication with the first air inlet 313.

In this way, the cooling gas enters the interior of the housing 40 from the air inlet nozzle 41 and continuously flows to the first air inlet 313 on the end plate 315, and during the flowing process, the cooling gas can take away the heat on the camera 20 which works normally, so as to provide cooling; the cooling gas then enters from the first inlet 313, passes into the first cooling chamber 311, and flows out from the first outlet 312; cooling treatment is realized on the sleeve body 11 and the first lens 12; in this way, the cooling gas is introduced from the air inlet nozzle 41 to the first air outlet 312 and discharged, and the camera 20, the sleeve body 11, and the first lens 12 can be cooled in this order.

In addition, the camera 20 is disposed in the housing 40, and dust in the external environment can be isolated by the housing 40, so that stable operation of the camera 20 can be ensured.

Alternatively, the housing 40 may be selected to be a plastic or metal shell.

In some embodiments, referring to fig. 1 to 5, the blowing device 30 includes a second housing 33, and the second housing 33 is sleeved outside the first housing 31. The second housing 33 is a hollow tube structure, and may be made of a material resistant to high temperature, such as tungsten alloy, so that it can withstand the high temperature in the graphitization furnace and has a certain strength enough to support the components.

The front end of the second shell 33 is sleeved with the front end of the sleeve body 11; the rear end of the second housing 33 is sleeved with the rear end of the sleeve body 11.

The inner wall of the second housing 33 is spaced apart from the outer tube wall of the first housing 31 to form a second cooling chamber 331. The second housing 33 is provided with a second air outlet 332 and a second air inlet 333, which are communicated with the second cooling cavity 331. The second gas inlet 333, the second cooling cavity 331, and the second gas outlet 332 collectively form a second cooling passage through which cooling gas flows.

On the other hand, the second housing 33 can protect the sleeve 11 and the first housing 31, and further protect the first lens 12 on the sleeve 11. On the other hand, the second air inlet 333, the second cooling cavity 331, and the second air outlet 332 together form a second cooling channel through which cooling air flows, and when the cooling air flows in the second cooling channel, the cooling air can cool down and cool the sleeve body 11 and the first housing 31 in the second cooling cavity 331, so as to prevent the sleeve body 11 from being melted by high-temperature baking;

It should be noted that, through the cooling of the first cooling channel and the second cooling channel, the second cooling channel reduces the ambient temperature of the periphery of the first shell 31, 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 311 in the first shell 31 can cool down the sleeve 11 better, prevent the lens sleeve 10 from being melted by high temperature baking, and finally protect the first lens 12 effectively.

In some embodiments, referring to fig. 1, both ends of the first housing 31 are sealed with both ends of the second housing 33, respectively. Specifically, one end of the second housing 33 abuts against the end plate 315 in the axial direction, and the abutting area should be sealed by a welding seal, a threaded connection seal, or a male-female plug, or by a sealant. The other end of the second housing 33 extends until reaching the air guiding part 314, and similarly, the end of the second housing 33 and the peripheral part of the air guiding part 314 can be matched by adopting a welding seal, a threaded connection seal or a male plug and a female plug, and can also be sealed by adopting sealant and the like; thereby preventing the escape of high temperature gases and dust in the graphitization furnace from the second housing 33 to the outside environment.

The second air intake 333 is provided in a region of the second housing 33 near the end plate 315; the cooling gas is introduced into the first cooling chamber 311 from the second gas inlet 333, and then flows along the second cooling chamber 331; on the one hand, the cooling gas flowing in the second cooling passage takes away the heat of the outer peripheral side of the first housing 31, thereby realizing cooling; on the other hand, the cooling gas flowing in the second cooling channel can form a heat insulating layer to isolate the high temperature environment in the graphitization furnace from the first shell 31, so that the first cooling cavity 311 in the first shell 31 can cool down and cool down the lens sleeve 11 better, prevent the lens sleeve 10 from being melted by high temperature baking, and finally protect the first lens 12 effectively.

The second air outlet 332 is disposed at an end of the second housing 33 near the air guiding portion 314; the cooling gas discharged from the second air outlet 332 can be aligned with the air guiding portion 314 to provide effective cooling, and the cooling gas discharged from the second air outlet 332 can be parallel to the first lens 12, so that the cooling gas discharged from the second air outlet 332 forms a gas wall in the area near the first lens 12, on one hand, dust is prevented from approaching to the outer mirror surface of the first lens 12, and then the cooling gas blown from the first air outlet 312 is matched to purge the first lens 12, so that the outer mirror surface of the first lens 12 is ensured to be clean, and clear observation is ensured. On the other hand, the cooling gas discharged from the second gas outlet 332 forms a gas wall to isolate the high temperature gas in the graphite furnace from the first mirror 12, and the cooling gas blown out from the first gas outlet 312 is matched to take away the heat on the first lens 12, so that the temperature of the first lens 12 is reduced, and the first lens is prevented from being melted by high-temperature roasting.

In some embodiments, referring to fig. 1 to 5, the blowing device 30 includes a third housing 34, and the third housing 34 is detachably sleeved outside the second housing 33. The second housing 33 is a hollow tube structure, and may be made of a material resistant to high temperature, such as tungsten alloy, so that it can withstand the high temperature in the graphitization furnace and has a certain strength enough to support the components.

The third shell 34 can be used for being inserted into a through hole on the furnace wall 210, and the third shell 34 is fixedly connected with the furnace wall 210; the third casing 34 is detachably sleeved outside the second casing 33; thus, the second housing 33, the first housing 31, the lens sleeve 10, and the camera 20 can be removed from the third housing 34 as a whole; the operation staff can conveniently maintain and overhaul.

The inner wall of the third housing 34 is spaced from the outer tube wall of the second housing 33 to form a third cooling chamber 341; the third casing 34 is provided with a third air outlet 342 and a third air inlet 343 which are communicated with the third cooling cavity 341; the third air inlet 343, the third cooling chamber 341, and the third air outlet 342 together form a third cooling passage through which cooling air can flow.

In this way, the third casing 34 can protect the second casing 33, the sleeve body 11 and the first casing 31, and further protect the first lens 12 on the sleeve body 11.

On the one hand, the cooling gas flowing in the third cooling passage takes away the heat of the outer peripheral side of the second casing 33, thereby achieving cooling; on the other hand, the cooling gas flowing in the third cooling channel can form a heat insulating layer to isolate the high-temperature furnace wall 210 from the second shell 33, further isolate the first shell 31 from the external high-temperature environment, and then cooperate with the second cooling channel and the cooling gas flowing in the first cooling channel to gradually cool down, so that the first cooling cavity 311 in the first shell 31 can cool down the sleeve body 11 better, prevent the lens sleeve 10 from being baked and melted at high temperature, and finally protect the first lens 12 effectively.

Optionally, cooling gas with different flow rates in the third cooling channel, the second cooling channel and the first cooling channel is gradually cooled, and the heat absorbed by the third cooling channel at the outermost side is maximum, so that the gas flow is also set to be maximum, and the cooling gas flow in the third cooling channel can be 3-10 cubic per hour; the heat absorbed by the second cooling channel in the middle is secondary, so that the cooling gas flow in the second cooling channel can be 2-8 cubic per hour; the innermost first cooling channel absorbs less heat and the cooling gas flow in the first cooling channel may be 1-6 cubes per hour. Of course, the gas flow rates in the third cooling channel, the second cooling channel and the first cooling channel may be designed according to practical needs, and are not limited herein.

Optionally, the length of the third shell 34 in the axial direction is generally comparable to the thickness of the furnace wall 210, such that the length of the third shell 34 in the axial direction is shorter than the length of the second shell 33 in the axial direction.

Alternatively, the third housing 34 may be secured to the through-hole in the furnace wall 210 by interference fit, welding, flange connection, and sealed to the possible gap by a sealing material such as asbestos or the like. In addition, when the second housing 33 is inserted into the third housing 34, the two side environments on the furnace wall 210 can be isolated, and the high temperature environment and the external environment in the graphitization furnace can be avoided.

In some embodiments, referring to fig. 1 to 5, the image pickup apparatus includes a control valve 50 and a socket 51 connected to the control valve 50; the second housing 33 is sequentially provided with a control valve 50 and a plug bush 51. Wherein a gap 52 is provided between the inner wall of the plug bush 51 and the outer periphery of the second housing 33; the gap 52 communicates the third cooling chamber 341 with the control valve 50.

Specifically, the control valve 50 is in an open state in a normal state, i.e., the gap 52 is isolated from the outside; because the graphitization furnace is continuously provided with an air extracting device for extracting vacuum, when the second shell 33 is required to be directly taken down from the third shell 34, larger negative pressure resistance of air can be met; at this time, an operator can communicate the external environment with the gap 52 by opening the control valve 50, and thus can communicate the external environment with the third cooling chamber 341, so that the internal and external pressures can be balanced; the second housing 33, the first housing 31, the lens sleeve 10, the camera 20, the control valve 50 and the plug bush 51 are conveniently taken off from the third housing 34 as a whole; the operation staff can conveniently maintain and overhaul.

The plug bush 51 is detachably connected with the third housing 34, and is in plug fit or threaded connection, so that the disassembly is convenient. In addition, a sealing material, such as asbestos, may be added to the gap between the plug bush 51 and the third housing 34 to increase the sealing performance.

In some embodiments, referring to fig. 1-5, the lens sleeve 10 includes a second lens 14, the second lens 14 being disposed at an end of the sleeve body 11 remote from the first lens 12.

The tube wall of the end of the sleeve body 11 far from the end of the first lens 12 can wrap the second lens 14; the peripheral side of the second lens 14 is adhered and sealed with the port of the sleeve body 11 to prevent water vapor and dust in the external environment from entering the sleeve body 11, so that the inner mirror surface of the first lens 12 facing the camera 20 is ensured not to be polluted and cleaning is not needed; the camera 20 receives an image of the first lens 12 through the second lens 13.

In addition, the lens sleeve 10 may further include a third lens 15, the third lens 15 being disposed within the sleeve body 11. It will be appreciated that the third lens 15 may be one or more and arranged inside the sleeve body 11 along the axial direction of the central shaft; the first lens 12, the second lens 14 and the third lens 15 can be designed into plane mirrors or concave-convex mirrors according to the requirements, so that the observation precision is improved, and the images in the graphitizing furnace are better collected to the camera 20; the coking condition in the graphitization furnace can be observed in time by an operator conveniently, so that the process of converting the carbonaceous material can be controlled better.

Based on the same concept as the above-described image pickup device, a second aspect of the present application provides a graphitization furnace, which includes a reaction chamber 200 and the above-described image pickup device 100, as shown in fig. 1 to 6, wherein the image pickup device 100 is inserted into a furnace wall 210 of the reaction chamber 200 for observing the condition inside the reaction chamber 200.

In some embodiments, referring to fig. 1 to 6, the furnace wall 210 is formed with a groove 211, and the first lens 12 is located at the bottom of the groove 211, so that the first lens 12 can have a larger viewing angle to observe the picture inside the graphitization furnace, so that an operator can observe the coking condition inside the graphitization furnace in time, and the carbonaceous material conversion process can be controlled better.

A third aspect of the present application is a battery production apparatus including the above-described graphitizing furnace, based on the same concept as the above-described graphitizing furnace.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (14)

1. An image pickup apparatus, characterized by comprising:

a lens sleeve (10), wherein the lens sleeve (10) comprises a sleeve body (11) and a first lens (12), and the first lens (12) is arranged at one end of the sleeve body (11);

the camera (20) is arranged at the other end of the sleeve body (11) far away from the first lens (12);

and an air blowing device (30), the air blowing device (30) being capable of blowing the first lens (12).

2. The imaging apparatus according to claim 1, wherein the air blowing device (30) includes a first housing (31), and the sleeve body (11) is sleeved in the first housing (31); the inner wall of the first shell (31) and the outer pipe wall of the sleeve body (11) are separated to form a first cooling cavity (311);

A first air outlet (312) and a first air inlet (313) which are communicated with the first cooling cavity (311) are formed in the first shell (31);

the first gas inlet (313), the first cooling chamber (311), and the first gas outlet (312) together form a first cooling channel through which a cooling gas can flow.

3. The imaging apparatus according to claim 2, wherein an end of the sleeve body (11) near the first lens (12) abuts against an end of the first housing (31), the first lens (12) being flush with the first air outlet (312) along a central axis;

the first housing (31) comprises an air guide part (314), the air guide part (314) is arranged at the end part of the first air outlet (312), and air flow blown out from the first air outlet (312) can be guided to the first lens (12) through the air guide part (314).

4. The imaging apparatus according to claim 3, wherein the air guide portion (314) is a baffle plate circumferentially disposed at the first air outlet (312), and a plate surface of the air guide portion (314) intersects the central axis.

5. The imaging apparatus according to claim 3 or 4, wherein an end of the first housing (31) remote from the first lens (12) has an end plate (315), an end of the sleeve body (11) remote from the first lens (12) includes a connection portion (13), the connection portion (13) is penetrated from the end plate (315), and the connection portion (13) is detachably connected to the camera (20).

6. The imaging apparatus according to claim 5, characterized in that the imaging apparatus comprises a housing (40), the housing (40) being housed at a side of the end plate (315) close to the camera (20) to enclose a housing cavity (42);

the first air inlet (313) penetrates through the end plate (315) and is communicated with the housing cavity (42);

the connecting parts (13) and the cameras (20) are all arranged in the housing (40); the housing (40) has an air inlet nozzle (41) thereon which connects the housing chamber (42) to the outside.

7. The imaging apparatus according to claim 5, wherein the air blowing device (30) includes a second housing (33), the second housing (33) being sleeved outside the first housing (31);

the inner wall of the second shell (33) and the outer tube wall of the first shell (31) are separated to form a second cooling cavity (331);

a second air outlet (332) and a second air inlet (333) which are communicated with the second cooling cavity (331) are formed in the second shell (33);

the second gas inlet (333), the second cooling cavity (331), and the second gas outlet (332) together form a second cooling channel through which cooling gas can flow.

8. The imaging apparatus according to claim 7, wherein one end of the second housing (33) abuts the end plate (315), and the other end of the second housing (33) extends until reaching the air guide portion (314);

The second air inlet (333) is arranged at a region of the second housing (33) close to the end plate (315);

the second air outlet (332) is arranged at the end part of the second shell (33) close to the air guide part (314).

9. The imaging apparatus according to claim 7 or 8, wherein the air blowing device (30) includes a third housing (34), the third housing (34) being detachably sleeved outside the second housing (33);

the inner wall of the third shell (34) and the outer tube wall of the second shell (33) are separated to form a third cooling cavity (341);

a third air outlet (342) and a third air inlet (343) which are communicated with the third cooling cavity (341) are formed in the third shell (34);

the third air inlet (343), the third cooling chamber (341), and the third air outlet (342) together form a third cooling channel through which cooling air can flow.

10. The imaging apparatus according to claim 9, characterized in that the imaging apparatus comprises a control valve (50) and a plug bush (51) connected to the control valve (50);

the second shell (33) sequentially penetrates through the control valve (50) and the plug bush (51), and a gap (52) is formed between the plug bush (51) and the second shell (33); the plug bush (51) is detachably connected with the third shell (34);

The gap (52) communicates the third cooling chamber (341) with the control valve (50).

11. The imaging device according to any one of claims 1 to 4, wherein the lens sleeve (10) comprises a second lens (14), the second lens (14) being arranged at an end of the sleeve body (11) remote from the first lens (12).

12. A graphitization furnace, characterized by comprising a reaction chamber (200) and an imaging device (100) according to any of claims 1-11, wherein the imaging device (100) is inserted on a furnace wall (210) of the reaction chamber (200) for observing the condition inside the reaction chamber (200).

13. The graphitization furnace according to claim 12, characterized in that the furnace wall (210) is formed with a recess (211), the first lens (12) being at the bottom of the recess (211).

14. A battery production apparatus comprising the graphitization furnace according to claim 12 or 13.