Temperature measuring device and kiln production line

Abstract

The application discloses a temperature measuring device and a kiln production line. The temperature measuring device is suitable for synchronous movement with a sagger. The temperature measuring device comprises a thermocouple and a main body. The measuring end of the thermocouple is suitable for being inserted into the material in the sagger. The main body comprises a collection module and a storage module. The collection module is connected with the thermocouple and is suitable for collecting the signal generated by the thermocouple. The storage module is connected with the collection module and is suitable for storing the data output by the collection module. The technical scheme can monitor the actual temperature of the material in the sagger, accurately collect the material temperature change data in the sintering process, provide key support for optimizing the temperature control of the kiln, and finally realize accurate regulation and control of the temperature uniformity and accuracy of the kiln, and guarantee the product quality.

Description

Technical Field

[0001] This application relates to the field of lithium battery production technology, and in particular to a temperature measuring device and a kiln production line. Background Technology

[0002] The production of lithium-ion battery cathode materials requires a sintering process. The kiln, as the core equipment of the sintering process, achieves high-temperature treatment through a combination of radiation, convection and conduction heat transfer. The material is loaded into the sagger and moves along the kiln's transmission channel. Traditional temperature measurement methods mainly involve installing thermocouples in the observation holes of the kiln wall or in the gaps of the kiln's transmission channel. The thermocouples measure the "local point temperature" rather than the actual temperature of the material, which leads to a large deviation between the temperature measured by the thermocouple and the actual temperature of the material. Utility Model Content

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, the first aspect of this application proposes a temperature measuring device.

[0004] To achieve the above objectives, this application discloses a temperature measuring device adapted to move synchronously with the crucible, the temperature measuring device comprising: Thermocouple, the measuring end of which is adapted to be inserted into the material in the crucible; and The main body includes a data acquisition module and a storage module. The data acquisition module is connected to the thermocouple to acquire the signal generated by the thermocouple, and the storage module is connected to the data acquisition module to store the data output by the data acquisition module.

[0005] In some embodiments of this application, there are multiple thermocouples, and each of the multiple thermocouples is connected to the acquisition module.

[0006] In some embodiments of this application, the thermocouple is adapted to be inserted into the material in the sagger in a direction perpendicular to the bottom of the sagger.

[0007] In some embodiments of this application, the temperature measuring device further includes a fixing mechanism adapted to be fixed to the crucible, and the thermocouple adapted to be fixed to the fixing mechanism.

[0008] In some embodiments of this application, the main body further includes an interface connected to the storage module, the interface being adapted for data transmission.

[0009] In some embodiments of this application, the interface is a USB interface.

[0010] In some embodiments of this application, the temperature measuring device further includes a housing, the main body is disposed inside the housing, the thermocouple passes through the housing from the main body and extends to the outside of the housing, and the interior of the housing is provided with heat insulation material located between the main body and the inner wall of the housing.

[0011] In some embodiments of this application, the housing includes a mounting port and a cover, the cover being adapted to open and close the mounting port, the main body being adapted to be embedded in the interior of the housing through the mounting port and being detachably disposed, and the thermocouple passing through the cover to extend out of the housing.

[0012] In some embodiments of this application, the heat insulation material is aluminum silicate fiber cotton.

[0013] In some embodiments of this application, the temperature measuring device further includes a cooling pipe adapted to be filled with water, at least a portion of the cooling pipe being disposed inside the housing, and the cooling pipe having an opening communicating with the outside of the housing.

[0014] In some embodiments of this application, the portion of the cooling pipe located inside the housing is wrapped with the thermal insulation material; And / or, the cooling pipes are in a serpentine configuration; And / or, the opening faces upwards.

[0015] In some embodiments of this application, the temperature measuring device is adapted to be supported on the transfer channel of the kiln used to transfer the sagger.

[0016] The second aspect of this application discloses a kiln production line, which includes a kiln and the aforementioned temperature measuring device. The kiln includes a transmission channel, and the temperature measuring device is adapted to be supported on the transmission channel.

[0017] The technical solution of this application can obtain the actual temperature of the material inside the sagger, accurately collect the material temperature change data during the sintering process, provide key support for optimizing the temperature control of the kiln, and ultimately achieve precise control of the temperature uniformity and accuracy of the kiln, ensuring product quality.

[0018] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the temperature measuring device in some embodiments; Figure 2 This is a partial structural diagram of the temperature measuring device in some embodiments; Figure 3 These are schematic diagrams of the main body and thermocouple structure in some embodiments; Figure 4 This is a schematic diagram of the material being inserted into the crucible in some embodiments; Figure 5 This is a schematic diagram showing the temperature measuring device and multiple crucibles in some embodiments; Figure 6 This is a schematic diagram of the sintering curves in some embodiments.

[0020] Figure label: Temperature measuring device 100, thermocouple 110, main body 120, acquisition module 121, storage module 122, interface 123, box 130, mounting port 131, box cover 132, heat insulation material 140, cooling pipe 150, opening 151, and sagger 200.

[0021] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0023] In the description of this 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," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more. In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In the production process of lithium-ion battery cathode materials (such as ternary materials NCM / NCA, lithium iron phosphate LFP, lithium cobalt oxide LCO, etc.), the sintering process is the core link that determines the material performance. This process requires sintering the mixed precursor powders (such as nickel cobalt manganese hydroxide, lithium carbonate, etc.) under strictly controlled temperature profiles (usually 700~1000℃), atmospheric environment (air / oxygen / nitrogen, etc.) and residence time, ultimately forming a cathode material crystal structure with high specific capacity, good cycle stability and safety.

[0025] As the core equipment in the sintering process, the kiln achieves high-temperature treatment through a combination of radiation, convection, and conduction heat transfer. The material is loaded into the sagger and moves along the kiln's transmission channel. Traditional temperature measurement methods mainly involve installing thermocouples in the observation holes of the kiln wall or in the gaps of the kiln's transmission channel. The thermocouples measure the "local point temperature" rather than the actual temperature of the material, which leads to a large deviation between the temperature measured by the thermocouple and the actual temperature of the material. Therefore, the first aspect of this application discloses a temperature measuring device 100, which in some embodiments is combined with Figures 1 to 4As shown, the temperature measuring device 100 is adapted to move synchronously with the sagger 200. The temperature measuring device 100 includes a thermocouple 110 and a main body 120. The measuring end of the thermocouple 110 is adapted to be inserted into the material in the sagger 200. The main body 120 includes a data acquisition module 121 and a storage module 122. The data acquisition module 121 is connected to the thermocouple 110 to acquire the signal generated by the thermocouple 110. The storage module 122 is connected to the data acquisition module 121 to store the data output by the data acquisition module 121. In this embodiment, the temperature measuring device 100 can obtain the actual temperature of the material in the sagger 200, accurately collect the material temperature change data during the sintering process, provide key support for optimizing the temperature control of the kiln, and ultimately achieve precise control of the temperature uniformity and accuracy of the kiln, ensuring product quality.

[0026] Specifically, the material is loaded into the sagger 200, which is supported on the kiln's transmission channel (the sagger 200 can be directly or indirectly supported on the transmission channel). Under the action of the transmission channel, the sagger 200 moves along the extension direction of the transmission channel. It can be understood that the kiln includes, but is not limited to, roller kilns, tunnel kilns, etc.

[0027] To monitor the temperature during the sintering process of the material, a temperature measuring device 100 is configured. The temperature measuring device 100 and the sagger 200 move synchronously. The temperature measuring device 100 includes a thermocouple 110 and a main body 120. The measuring end of the thermocouple 110 is inserted into the material in the sagger 200. The main body 120 includes a data acquisition module 121 and a storage module 122. The data acquisition module 121 is connected to the thermocouple 110 to acquire the signal generated by the thermocouple 110. The storage module 122 is connected to the data acquisition module 121 to store the data output by the data acquisition module 121.

[0028] The temperature measuring device 100 and the crucible 200 can move synchronously by setting up an additional transmission mechanism to drive the temperature measuring device 100 to move, or by supporting the temperature measuring device 100 on the transmission channel (either directly or indirectly), so that the temperature measuring device 100 and the crucible 200 move together under the action of the transmission channel. The temperature measuring device 100 can be equipped with its own power supply to provide the power required for operation.

[0029] The thermocouple 110 can be of various types, including but not limited to S-type thermocouples or K-type thermocouples. The measuring end of the thermocouple 110 is inserted into the material in the sagger 200 (the insertion depth can be adjusted according to the material thickness) to make contact with the material. Since the temperature measuring device 100 and the sagger 200 move synchronously, the measuring end of the thermocouple 110 can always be in the core heated area of ​​the material. Thus, throughout the sintering process, the thermocouple 110 continuously generates a signal according to the actual temperature change of the material, and the delay from the actual temperature change of the material to the signal response generated by the thermocouple 110 can be reduced, thereby enabling the capture of rapid temperature change processes (such as instantaneous temperature fluctuations when adjusting the heating power at the kiln head / kiln tail).

[0030] The signal generated by thermocouple 110 is acquired by acquisition module 121. For example, acquisition module 121 is developed based on an ARM chip. Acquisition module 121 acquires the signal generated by thermocouple 110, processes it, and outputs corresponding data. This data reflects the temperature change of the material during sintering, such as time-temperature correlation data. Based on this, the data output by acquisition module 121 is stored in storage module 122. After the material is sintered, the staff can analyze the sintering temperature change pattern of the sagger 200 through the data stored in storage module 122, thereby providing a basis for kiln temperature control. This allows for targeted adjustment of parameters such as heating power distribution, transmission speed, or atmosphere flow rate, helping to achieve precise control of temperature uniformity and accuracy within the kiln, ensuring the consistency and performance stability of the sintered material. It is understood that acquiring the signal of thermocouple 110 through acquisition module 121 and processing it to output corresponding data is already known in the prior art and will not be described in detail here.

[0031] Therefore, in this embodiment, the temperature measuring device 100 and the sagger 200 move synchronously, the measuring end of the thermocouple 110 is inserted into the material in the sagger 200, the acquisition module 121 is connected to the thermocouple 110 to collect the signal generated by the thermocouple 110, and the storage module 122 understands the acquisition module 121 to store the data output by the acquisition module 121. In this way, the temperature measuring device 100 can collect the actual temperature of the material, monitor the temperature change pattern of the material in different temperature zones in the kiln, and clearly reflect the longitudinal (kiln head to kiln tail) temperature distribution difference in the kiln, providing a direct basis for optimizing the kiln temperature control.

[0032] In some embodiments, combined with Figure 2As shown, there are multiple thermocouples 110, each connected to a data acquisition module 121. "Multiple" means two or more, for example, two, three, four, five, six, seven, eight, or more thermocouples 110. The data acquisition module 121 can acquire multiple signals, reducing the number of main components 120 and minimizing the space occupied by the temperature measuring device 100 while still monitoring the temperature of multiple saggers 200. It is understood that the saggers 200 are arranged in multiple rows laterally along the transmission channel. Through the arrangement of multiple thermocouples 110, the data measured by the temperature measuring device 100 can also reflect the temperature distribution differences between laterally adjacent areas within the kiln.

[0033] When there are multiple thermocouples 110, the data output by the acquisition module 121 can be associated data of time, sagger number, and temperature value. For example, after the acquisition module 121 acquires the electromotive force signal of the thermocouple 110, it converts it into a temperature value through a built-in temperature compensation algorithm, and stores it in the storage module 122 according to the association of time and sagger number. This data can completely record the temperature change curve of the material in each sagger 200 during the entire sintering process (from entering the furnace to exiting the furnace).

[0034] Thermocouple 110 can be inserted into the material in crucible 200 with the thermocouple 110 inserted at an angle relative to the bottom of crucible 200. However, this method of insertion cannot guarantee the consistency of the angle of inclination of the thermocouple 110 each time it is inserted into the crucible 200. Therefore, in some embodiments, combined with Figure 4 As shown, the thermocouple 110 is adapted to be inserted into the material of the crucible 200 in a direction perpendicular to the bottom of the crucible 200. Compared with the thermocouple 110 being inserted at an angle, the thermocouple 110 being inserted into the material of the crucible 200 in a vertical manner makes it easier to control the consistency of each insertion. In particular, when there are multiple thermocouples 110, this can ensure the consistency of each thermocouple 110 being inserted into the corresponding crucible 200 and reduce temperature measurement errors.

[0035] In some embodiments, the temperature measuring device 100 further includes a fixing mechanism (not shown in the figure), which is adapted to be fixed to the crucible 200, and the thermocouple 110 is adapted to be fixed to the fixing mechanism. The thermocouple 110 is inserted into the material in the crucible 200 and fixed by the fixing mechanism, so that the thermocouple 110 is not easily displaced, ensuring the accuracy of temperature measurement.

[0036] There are various types of fixing mechanisms, as long as they can be fixed to the crucible 200 and used to fix the thermocouple 110. For example, one end of the fixing mechanism is clamped to the side wall of the crucible 200, and the other end clamps the thermocouple 110, thus fixing the thermocouple 110. Alternatively, the fixing mechanism can be clamped to opposite sides of the crucible 200, and the fixing mechanism is provided with limiting holes, through which the thermocouple 110 passes and is inserted into the material in the crucible 200. Of course, other types of structures can also be used for the fixing mechanism.

[0037] In some embodiments, combined with Figure 2 As shown, the main body 120 also includes an interface 123 connected to the storage module 122, which is suitable for data transmission. After the material is sintered, workers can use a reading device connected to the interface 123 to read the data stored in the storage module 122. For example, if the interface 123 is a USB (Universal Serial Bus) interface, workers can insert a USB flash drive into the interface 123 to copy data, making data analysis more convenient.

[0038] In some embodiments, combined with Figure 1 As shown, the temperature measuring device 100 also includes a housing 130, a main body 120 disposed inside the housing 130, a thermocouple 110 passing through the main body 120 through the housing 130 to extend outside the housing 130, and a heat insulation material 140 located between the main body 120 and the inner wall of the housing 130 is disposed inside the housing 130.

[0039] When the temperature measuring device 100 is placed inside the kiln and moves synchronously with the sagger 200, the high temperature inside the kiln will be transferred to the main body 120, affecting its operation. Therefore, in this embodiment, the temperature measuring device 100 also includes a housing 130, for example, the housing 130 can be made of stainless steel. The main body 120 is located inside the housing 130, and the thermocouple 110 extends from the main body 120 through the housing 130 to the outside of the housing 130. The housing 130 is provided with a heat insulation material 140 located between the main body 120 and the inner wall of the housing 130. The heat insulation material 140 isolates the heat transfer towards the main body 120, reduces radiant heat, and ensures the normal operation of the main body 120. A bracket (not shown in the figure) can be installed inside the housing 130, and the main body 120 is mounted on the bracket to avoid direct contact between the main body 120 and the housing 130, reducing heat transfer to the main body 120. The housing 130 can be placed on the transmission channel, thereby enabling the temperature measuring device 100 and the sagger 200 to move synchronously.

[0040] Optionally, the insulation material 140 can be aluminum silicate fiber cotton, which has a thermal conductivity of ≤0.1W / (m·K) and a temperature resistance of ≥1200℃, reducing the transfer of high temperature to the main body 120 through radiation and conduction.

[0041] In some embodiments, combined with Figure 1 As shown, the housing 130 includes a mounting port 131 and a cover 132. The cover 132 is adapted to open and close the mounting port 131. The main body 120 is adapted to be embedded in the interior of the housing 130 through the mounting port 131 and is detachably mounted. The thermocouple 110 passes through the cover 132 and extends out of the housing 130.

[0042] For example, the insulation material 140 can be filled into the interior of the housing 130, forming a mounting cavity corresponding to the mounting opening 131. The main body 120 is then embedded into the mounting cavity through the mounting opening 131. The housing cover 132 is then closed to shut the mounting opening 131, and the thermocouple 110 protrudes from the housing cover 132. After temperature measurement, the housing cover 132 can be opened to remove the main body 120 for data reading. It is understood that because of the insulation material 140 between the main body 120 and the inner wall of the housing 130, the inner side of the housing cover 132 is also provided with insulation material 140. When the housing cover 132 closes the mounting opening 131, insulation material 140 exists between the housing cover 132 and the main body 120.

[0043] In some embodiments, combined with Figure 1 As shown, the temperature measuring device 100 also includes a cooling pipe 150 suitable for supplying water to fill it, at least a portion of the cooling pipe 150 is located inside the housing 130, and the cooling pipe 150 has an opening 151 communicating with the outside of the housing 130.

[0044] The opening 151 of the cooling pipe 150 is connected to the external space of the box 130. For example, a part of the cooling pipe 150 extends out of the box 130, and an opening 151 is provided on this part. Water can be injected into the cooling pipe 150 through the opening 151. When the temperature measuring device 100 is placed in the kiln and moves synchronously with the sagger 200, the water in the cooling pipe 150 evaporates and absorbs heat, and conducts heat. The water vapor diffuses into the kiln, forming a double protection with the heat insulation material 140, improving the heat insulation effect, maintaining the ambient temperature of the main body 120 within a safe range, and ensuring the stable operation of the main body 120.

[0045] In some embodiments, combined with Figure 1 As shown, the portion of the cooling pipe 150 located inside the housing 130 is wrapped with heat insulation material 140. When heat is transferred toward the interior of the housing 130, it is first blocked by the heat insulation material 140, and then the water in the cooling pipe 150 evaporates and absorbs heat. This prevents the water in the cooling pipe 150 from evaporating too quickly and ensures that the evaporation and heat absorption of water continues to play a role throughout the sintering process.

[0046] In some embodiments, combined with Figure 1As shown, the cooling pipe 150 has a serpentine structure, which allows the cooling pipe 150 to meander inside the housing 130, thereby making the cooling of the inside of the housing 130 more uniform and improving the cooling effect on the main body 120.

[0047] In some embodiments, combined with Figure 1 As shown, the opening 151 faces upwards, which facilitates the upward diffusion of water vapor and the addition of water through the opening 151.

[0048] The second aspect of this application discloses a kiln production line. In some embodiments, the kiln production line includes a kiln and the aforementioned temperature measuring device 100. The kiln includes a transmission channel, for example, a transmission channel consisting of multiple rotatable rods. The temperature measuring device 100 is supported on the transmission channel, thus moving synchronously with the sagger 200 supported on the transmission channel.

[0049] The actual temperature data of the material inside the sagger 200 is obtained by the temperature measuring device 100. Operators can analyze the temperature variation patterns of the material in each sagger 200 in different sintering temperature zones, accurately locate saggers 200 or temperature zones with abnormal temperatures, and then adjust the kiln heating power distribution, roller speed, or atmosphere flow rate. Ultimately, this achieves a high-precision temperature control target: a horizontal (between adjacent saggers 200) and vertical (from kiln head to kiln tail) temperature difference ≤ ±10℃, and a single-point measurement error ≤ ±3℃, ensuring material consistency and performance stability. It is understood that the temperature measuring device 100 of the kiln production line in this embodiment adopts the technical solution of the above embodiment, and therefore possesses at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0050] Taking a two-layer, six-row kiln as an example, the experiment was conducted. Two layers of four-row saggers 200 were placed on the transport channel. The temperature measuring device 100 was placed on the transport channel and occupied the space of two rows of saggers 200. The temperature measuring device 100 extended eight thermocouples 110 and inserted them into the corresponding eight saggers 200. The thermocouples 110 and sagger numbers corresponded one-to-one. Under the action of the transport channel, the temperature measuring device 100 and saggers 200 moved synchronously. After the temperature measuring device 100 and saggers 200 were removed from the furnace, they were cooled. The data of the storage module 122 was copied out using a USB flash drive. The staff could analyze the temperature changes of the material in the corresponding saggers 200 and the temperature differences of the material in saggers 200 at different positions. In this way, the difference between the actual temperature and the design temperature of the material could be identified, providing key support for temperature control. By adjusting the heating power, transport speed, atmosphere conditions, etc., the actual temperature of the material could be made closer to the design temperature, thereby completing the optimization of the sintering curve and ensuring the consistency and stability of the material performance.

[0051] For example, see Figure 6As shown, the design curve is the temperature change curve over time designed by the kiln for sintering materials. The actual curve before and after improvement are both curves showing the actual temperature of the material changing over time. By using the temperature measuring device 100, the difference between the actual temperature of the material and the design temperature can be analyzed (comparing the actual curve before improvement with the design curve). Then, by adjusting the relevant parameters of the kiln, the actual temperature of the material is made closer to the design temperature (comparing the actual curve after improvement with the design curve), thus completing the optimization of the sintering curve.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A temperature measuring device, characterized in that, The temperature measuring device is adapted to move synchronously with the crucible (200), and the temperature measuring device includes: Thermocouple (110), the measuring end of which is adapted to be inserted into the material in the crucible (200); and The main body (120) includes a data acquisition module (121) and a storage module (122). The data acquisition module (121) is connected to the thermocouple (110) to acquire the signal generated by the thermocouple (110), and the storage module (122) is connected to the data acquisition module (121) to store the data output by the data acquisition module (121).

2. The temperature measuring device as described in claim 1, characterized in that, The number of thermocouples (110) is multiple, and each of the multiple thermocouples (110) is connected to the acquisition module (121); And / or, the thermocouple (110) is adapted to be inserted into the material in the sagger (200) in a direction perpendicular to the bottom of the sagger (200); And / or, the temperature measuring device further includes a fixing mechanism adapted to be fixed to the crucible (200), and the thermocouple (110) adapted to be fixed to the fixing mechanism.

3. The temperature measuring device as described in claim 1, characterized in that, The main body (120) also includes an interface (123) connected to the storage module (122), the interface (123) being adapted for data transmission.

4. The temperature measuring device as described in claim 3, characterized in that, The interface (123) is a USB interface.

5. The temperature measuring device according to any one of claims 1 to 4, characterized in that, The temperature measuring device also includes a housing (130), the main body (120) is disposed inside the housing (130), the thermocouple (110) passes through the housing (130) from the main body (120) and extends to the outside of the housing (130), and the interior of the housing (130) is provided with heat insulation material (140) located between the main body (120) and the inner wall of the housing (130).

6. The temperature measuring device as described in claim 5, characterized in that, The housing (130) includes a mounting port (131) and a cover (132). The cover (132) is adapted to open and close the mounting port (131). The main body (120) is adapted to be embedded in the interior of the housing (130) through the mounting port (131) and is detachably disposed. The thermocouple (110) passes through the cover (132) and extends out of the housing (130). And / or, the thermal insulation material (140) is aluminum silicate fiber cotton.

7. The temperature measuring device as described in claim 5, characterized in that, The temperature measuring device further includes a cooling pipe (150) suitable for supplying water to fill it, at least a portion of the cooling pipe (150) being disposed inside the housing (130), and the cooling pipe (150) having an opening (151) communicating with the outside of the housing (130).

8. The temperature measuring device as described in claim 7, characterized in that, The portion of the cooling pipe (150) located inside the housing (130) is wrapped with the heat insulation material (140); And / or, the cooling pipe (150) has a serpentine structure; And / or, the opening (151) is open to the top.

9. The temperature measuring device as described in claim 1, characterized in that, The temperature measuring device is adapted to be supported on the transmission channel of the kiln used for transmitting the sagger (200).

10. A kiln production line, characterized in that, The kiln production line includes a kiln and a temperature measuring device as described in any one of claims 1 to 9, wherein the kiln includes a transmission channel and the temperature measuring device is adapted to be supported on the transmission channel.

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