Chute liquid level temperature measuring device and vacuum furnace

Abstract

The utility model relates to the technical field of industrial smelting, and discloses a chute liquid level temperature measuring device and a vacuum furnace, which can accurately measure the temperature of molten metal in a chute of the vacuum furnace. According to the device, the tail end of a temperature measuring component and a body of the temperature measuring component are located in a temperature measuring component storage cylinder, the head end of the temperature measuring component is located in a first temperature measuring cylinder in an initial state, and cavities of the first temperature measuring cylinder and the temperature measuring component storage cylinder are communicated to form a temperature measuring component moving channel; the temperature measuring component moves in the temperature measuring component storage cylinder and the first temperature measuring cylinder in the axis direction. The second temperature measuring cylinder is fixed above the chute channel of the vacuum furnace; and the inner cavity of the second temperature measuring cylinder is communicated with the chute channel of the vacuum furnace. The driving mechanism is connected with the outer wall of the first temperature measuring cylinder and drives the lower end of the first temperature measuring cylinder to be aligned and contacted with the upper end of the second temperature measuring cylinder in a working state, and inner cavities of the first temperature measuring cylinder and the second temperature measuring cylinder are communicated; and the temperature measuring component extends into the inner cavity of the second temperature measuring cylinder through the inner cavity of the first temperature measuring cylinder and extends into the chute channel to measure the temperature of the liquid level in the chute.

Description

Technical Field

[0001] This application relates to the field of industrial smelting, and particularly to a chute liquid level temperature measuring device and a vacuum furnace. Background Art

[0002] In the field of metal processing, a vacuum induction melting furnace is an important device for melting and refining high-quality metal materials. In this process, the molten metal is guided from the melting chamber to the pouring chamber through a chute, and finally poured into a mold to form a product. The temperature of the pouring channel has a decisive impact on the structure and performance of the product. Therefore, the precise control of the pouring temperature is particularly crucial for the production of high-quality metal products.

[0003] However, there is a significant technical shortcoming in the current market's vacuum induction melting furnace during the pouring process: it is unable to accurately measure the actual temperature of the molten metal in the chute. This temperature uncertainty is mainly due to the long distance of the chute and the possible temperature changes that occur during the transmission of the molten metal. Therefore, operators usually have to rely on empirical data to estimate the temperature. This approach not only has low accuracy but also cannot effectively diagnose and solve problems when production issues arise, thus affecting the quality and consistency of the final product.

[0004] In addition, large-scale vacuum induction melting furnaces need to process multiple molds during each pouring process, which further increases the complexity and challenges of controlling the pouring temperature. Therefore, for a production environment that pursues extreme product quality and consistency, the performance of the existing technology still cannot meet the requirements of these high standards. Summary of the Invention

[0005] The purpose of this application is to provide a chute liquid level temperature measuring device and a vacuum furnace that can accurately measure the temperature of the molten metal liquid in the chute of the vacuum furnace.

[0006] This application discloses a chute liquid level temperature measuring device, including: a temperature measuring component storage cylinder 1, a temperature measuring component 2, a first temperature measuring cylinder 3, a second temperature measuring cylinder 4, and a driving mechanism 5;

[0007] The tail end of the temperature measuring component 2 and at least part of the body of the temperature measuring component 2 are located in the temperature measuring component storage cylinder 1. The head end of the temperature measuring component 2 is located in the first temperature measuring cylinder 3 in the initial state. The cavities of the first temperature measuring cylinder 3 and the temperature measuring component storage cylinder 1 are connected to form a temperature measuring component movement channel. The temperature measuring component 2 is configured to move along the axial direction in the temperature measuring component storage cylinder 1 and the first temperature measuring cylinder 3;

[0008] The second temperature measuring cylinder 4 is fixed above the chute channel 6 of the vacuum furnace, and the inner cavity of the second temperature measuring cylinder 4 is connected to the chute channel 6 of the vacuum furnace;

[0009] The driving mechanism 5 is connected to the outer wall of the first temperature measuring cylinder 3. The driving mechanism 5 is configured to drive the lower end of the first temperature measuring cylinder 3 to align and contact the upper end of the second temperature measuring cylinder 4 in the working state, so that the inner cavities of the first temperature measuring cylinder 3 and the second temperature measuring cylinder 4 are communicated. The temperature measuring component 2 extends into the inner cavity of the second temperature measuring cylinder 4 and into the chute channel through the inner cavity of the first temperature measuring cylinder 3 to measure the liquid level in the chute.

[0010] In a preferred example, the second temperature measuring cylinder 4 includes a flange adapter 7, a pneumatic ball valve 8, and a water-cooled lower flange 9.

[0011] The upper end of the pneumatic ball valve 8 is connected to the lower end of the flange adapter 7, the lower end of the pneumatic ball valve 8 is connected to the upper end of the water-cooled lower flange 9, and the lower end of the water-cooled lower flange 9 is connected to the upper surface of the vacuum furnace chute channel 6 and the inner cavities are communicated.

[0012] The upper end of the flange adapter 7 contacts the lower end of the first temperature measuring cylinder 3 and their axes coincide. A vacuum flange 10 is provided on the side wall of the flange adapter 7. The vacuum flange 10 is configured to evacuate the internal space of the components above the pneumatic ball valve 8 to a set vacuum degree.

[0013] In a preferred example, it further includes: a reduction motor 11. The temperature measuring component 2 includes: a temperature measuring thermocouple 12, a temperature measuring rod 13, and a driving gear 14.

[0014] The temperature measuring thermocouple 12 is partially disposed in the rod cavity of the temperature measuring rod 13. A protruding rack 15 is provided on the outer side wall of the temperature measuring rod 13. The protruding rack 15 meshes with the driving gear 14.

[0015] The output shaft 16 of the reduction motor 11 is connected to the driving gear 14. The reduction motor 11 is configured to drive the driving gear 14 to rotate so that the temperature measuring rod 13 drives the temperature measuring thermocouple 12 to move in the axial direction of the temperature measuring component storage cylinder 1.

[0016] In a preferred example, when measuring the temperature, the temperature measuring thermocouple 12 descends below the liquid level in the vacuum furnace chute channel 6. The pneumatic ball valve 8 is in an open state. The inner cavities of the first temperature measuring cylinder 3, the second temperature measuring cylinder 4, and the vacuum furnace chute channel 6 are communicated and have a preset vacuum degree.

[0017] In a preferred example, after the temperature measurement is completed, the temperature measuring thermocouple 12 rises to be stored in the temperature measuring component 2. The pneumatic ball valve 8 is in a closed state. The inner cavities of the first temperature measuring cylinder 3, the second temperature measuring cylinder 4, and the vacuum furnace chute channel 6 are no longer communicated, and the components above the vacuum ball valve are in an atmospheric state.

[0018] In a preferred example, it further includes a bracket 17 for supporting the first temperature measuring cylinder 3 to make the first temperature measuring cylinder 3 suspended, and the upper end of the bracket 17 is pivotally connected to the cylinder wall of the first temperature measuring cylinder 3.

[0019] In a preferred example, the temperature measuring thermocouple 12 is a disposable temperature measuring thermocouple or a thermocouple for repeated continuous temperature measurement.

[0020] In a preferred example, a sealing ring is provided on the lower end face of the first temperature measuring cylinder 3, and the sealing ring is used for contact sealing with the flange adapter 7.

[0021] In a preferred example, it further includes an encoder 18 installed on the driving mechanism 5, and the encoder 18 is configured to control the driving mechanism 5 to move the temperature measuring component 2 to a specified position.

[0022] This application also discloses a vacuum furnace 19 including the chute liquid level temperature measuring device described above.

[0023] In the embodiment of this application, through the moving channel formed by the temperature measuring component storage cylinder and the first temperature measuring cylinder, the temperature measuring component can be safely and accurately deployed. The driving mechanism can make the inner cavities of the first temperature measuring cylinder and the second temperature measuring cylinder communicate to achieve continuous and dynamic temperature measurement, thus effectively solving the problem of inaccurate measurement caused by long pouring distance and temperature change. In addition, by controlling the insertion depth and position of the temperature measuring component with a driving motor, not only the reliability of the measurement data is improved, but also the safety and efficiency of the operation are enhanced. This application shows extremely high value in the production environment that requires highly accurate temperature control to ensure the quality of metal products.

[0024] Furthermore, by providing a vacuum flange in the second temperature measuring cylinder, it can be used to create and maintain a vacuum environment. By evacuating the air above the pneumatic ball valve, heat exchange and chemical reactions are reduced to improve the accuracy and stability of temperature measurement. The pneumatic ball valve can adjust the pressure difference on both sides through its opening and closing operations, so that in the working state, both sides of the pneumatic ball valve can be in a vacuum state, thus more accurate temperature measurement data can be obtained. The water-cooled lower flange can protect the equipment from being damaged by high temperature, maintain the working temperature of the equipment components, and ensure the durability and stability of the equipment.

[0025] Furthermore, by setting up a reduction motor and a driving gear, the movement of the temperature measuring rod and the temperature measuring thermocouple can be precisely controlled, achieving efficient temperature measurement. This not only improves the response speed of temperature measurement but also ensures, through fine motion control, that the temperature measuring thermocouple can accurately reach the preset measurement position. In addition, the encoder can further improve the control accuracy, ensuring that the temperature measuring component accurately reaches the specified position through real-time feedback, thereby enhancing the overall operation accuracy and reliability.

[0026] A large number of technical features are recorded in the description of this application, distributed in various technical solutions. If all possible combinations of technical features (i.e., technical solutions) of this application were to be listed, the description would become overly lengthy. To avoid this problem, each technical feature disclosed in the above-mentioned invention content of this application, each technical feature disclosed in the following embodiments and examples, and each technical feature disclosed in the drawings can be freely combined with each other to form various new technical solutions (these technical solutions are all considered to have been recorded in this description), unless the combination of such technical features is technically infeasible. For example, in one example, features A + B + C are disclosed, and in another example, features A + B + D + E are disclosed. Features C and D are equivalent technical means that perform the same function, and only one of them can be used technically and it is impossible to use both simultaneously. Feature E can be combined with feature C technically. Then, the solution of A + B + C + D should not be considered to have been recorded due to technical infeasibility, while the solution of A + B + C + E should be considered to have been recorded. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of a chute liquid level temperature measuring device according to an embodiment of the present application.

[0028] Figure 2 is a schematic structural diagram of a chute liquid level temperature measuring device according to an embodiment of the present application.

[0029] Figure 3 is a schematic structural diagram of a chute liquid level temperature measuring device according to an embodiment of the present application.

[0030] Figure 4 is a partial enlarged view according to an embodiment of the present application.

[0031] Figure 5 is a partial enlarged view according to an embodiment of the present application.

[0032] Figure 6 is a schematic structural diagram of a vacuum furnace according to an embodiment of the present application.

[0033] Description of the Reference Numerals:

[0034] 1 - Thermometer component storage cylinder, 2 - Thermometer component, 3 - First thermometer cylinder, 4 - Second thermometer cylinder, 5 - Driving mechanism, 6 - Vacuum furnace chute channel, 7 - Flange adapter, 8 - Pneumatic ball valve, 9 - Water-cooled lower flange, 10 - Vacuum flange, 11 - Reduction motor, 12 - Thermocouple for temperature measurement, 13 - Temperature measuring rod, 14 - Driving gear, 15 - Rack, 16 - Output shaft, 17 - Bracket, 18 - Encoder, 19 - Vacuum furnace, P - Molten metal liquid. Detailed implementation mode

[0035] In the following description, many technical details are presented for the reader to better understand the present application. However, those of ordinary skill in the art can understand that the technical solutions claimed in the present application can be achieved even without these technical details and various changes and modifications based on the following embodiments.

[0036] Term

[0037] As used herein, the term "upper" refers to the direction away from the center of the earth or the base of the device in the normal operating state of the device or system. This direction is usually opposite to the direction of the earth's gravitational force, or in the specific installation and operating environment of the device, it is regarded as the upward direction. For example, in a vertically installed device, any component or functional part facing the top of the device is regarded as being in the "upper" position.

[0038] As used herein, the term "lower" refers to the direction close to the center of the earth or the base of the device in the normal operating state of the device or system. This direction is usually consistent with the direction of the earth's gravitational force, or in the specific installation and operating environment of the device, it is regarded as the downward direction. For example, in a vertically installed device, any component or functional part facing the bottom of the device is regarded as being in the "lower" position.

[0039] For ease of understanding according to the drawings, the definitions of "upper" and "lower" herein are not intended to limit their generally understood scope, but to describe the positional relationship of components, parts or specific functional elements in relative space, which is applicable regardless of whether the device is in motion or under external force.

[0040] To make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the drawings.

[0041] The first embodiment of the present application relates to a chute liquid level temperature measuring device, the structural diagram of which is as Figures 1-5 shown, including: a thermometer component storage cylinder 1, a thermometer component 2, a first thermometer cylinder 3, a second thermometer cylinder 4 and a driving mechanism 5.

[0042] The tail end of the temperature measuring component 2 and at least a part of the body of the temperature measuring component 2 are located within the temperature measuring component storage cylinder 1. The head end of the temperature measuring component 2 is located within the first temperature measuring cylinder 3 in the initial state. The cavities of the first temperature measuring cylinder 3 and the temperature measuring component storage cylinder 1 are in communication to form a temperature measuring component movement channel. The temperature measuring component 2 is configured to move along the axial direction within the temperature measuring component storage cylinder 1 and the first temperature measuring cylinder 3. The second temperature measuring cylinder 4 is fixed above the vacuum furnace chute channel 6, and the inner cavity of the second temperature measuring cylinder 4 is in communication with the vacuum furnace chute channel 6. The driving mechanism 5 is connected to the outer wall of the first temperature measuring cylinder 3. The driving mechanism 5 is configured to drive the lower end of the first temperature measuring cylinder 3 to align and contact the upper end of the second temperature measuring cylinder 4 in the working state, so that the inner cavities of the first temperature measuring cylinder 3 and the second temperature measuring cylinder 4 are in communication. The temperature measuring component 2 extends into the inner cavity of the second temperature measuring cylinder 4 and into the chute channel through the inner cavity of the first temperature measuring cylinder 3 to measure the liquid level in the chute.

[0043] In an alternative embodiment, the second temperature measuring cylinder 4 may include a flange adapter 7, a pneumatic ball valve 8, and a water-cooled lower flange 9. The upper end of the pneumatic ball valve 8 is connected to the lower end of the flange adapter 7, the lower end of the pneumatic ball valve 8 is connected to the upper end of the water-cooled lower flange 9, and the lower end of the water-cooled lower flange 9 is connected to the upper surface of the vacuum furnace chute channel 6 and the inner cavities are in communication. The upper end of the flange adapter 7 contacts the lower end of the first temperature measuring cylinder 3 and their axes coincide. A vacuum extraction flange 10 is provided on the side wall of the flange adapter 7, and the vacuum extraction flange 10 is configured to evacuate the internal space of the components above the pneumatic ball valve 8 to a set vacuum degree.

[0044] In an alternative embodiment, a water-cooled cavity is provided on the side wall of the water-cooled lower flange 9 for accommodating cooling water.

[0045] In an alternative embodiment, the driving mechanism 5 may include a piston, a cylinder block, and a sealing system. The piston is used to convert the hydraulic pressure in the cylinder block into mechanical motion. The cylinder block is a closed cylindrical structure that houses the piston and the liquid. The sealing system provides necessary sealing between the cylinder block and the piston. When

[0046] In an alternative embodiment, a reduction motor 11 may further be included, and the temperature measuring component 2 may include a temperature measuring thermocouple 12, a temperature measuring rod 13, and a driving gear 14. The temperature measuring thermocouple 12 is partially disposed within the rod cavity of the temperature measuring rod 13. A protruding rack 15 is provided on the outer sidewall of the temperature measuring rod 13, and the protruding rack 15 meshes with the driving gear 14. The output shaft 16 of the reduction motor 11 is connected to the driving gear 14, and the reduction motor 11 is configured to rotate the driving gear 14 so that the temperature measuring rod 13 drives the temperature measuring thermocouple 12 to move in the axial direction of the temperature measuring component storage cylinder 1. Optionally, the reduction motor 11 may include a motor and a gearbox or reduction gears for reducing the motor output speed while increasing the torque. The type of the reduction motor 11 may be selected according to actual usage requirements, including but not limited to: an AC reduction motor 11, a DC reduction motor 11, a stepping reduction motor 11, and a servo reduction motor 11, etc. Optionally, the AC reduction motor 11 may be composed of an AC motor and a gearbox connected thereto. The motor part is usually of the induction type, using an AC power supply to generate a rotating magnetic field to drive the rotor to rotate. The gearbox contains multiple sets of gears, and the output speed of the motor is reduced and the torque is increased through different gear ratios. Optionally, the DC reduction motor 11 may include a DC motor and an additional reduction mechanism. The motor part usually uses a permanent magnet or an electromagnet to generate a fixed magnetic field, and the speed and steering of the motor are controlled by direct current. Its gearbox may be similar to that of the AC reduction motor 11, increasing the torque by reducing the rotational speed, and is suitable for occasions requiring precise control. Optionally, the stepping reduction motor 11 may be composed of multiple sets of windings, and each set of windings receives an electrical signal respectively, enabling the motor to rotate precisely at a given stepping angle. Optionally, the servo reduction motor 11 may include a high-performance motor (which may be of the AC or DC type) and a high-precision feedback device, such as an encoder 18, for monitoring the position and speed of the motor.

[0047] In an alternative embodiment, when measuring the temperature, the thermocouple 12 for temperature measurement can descend below the liquid level in the chute passage 6 of the vacuum furnace. The pneumatic ball valve 8 is in the open state. The inner cavities of the first temperature measuring cylinder 3, the second temperature measuring cylinder 4 and the chute passage 6 of the vacuum furnace are communicated and have a preset vacuum degree. Specifically, before temperature measurement, the chute passage 6 of the vacuum furnace is in a vacuum state, and at this time the pneumatic ball valve 8 is in the closed state. When measuring the temperature, the drive mechanism 5 operates to drive the temperature measuring component storage cylinder 1 and the first temperature measuring cylinder 3 to move, so that the first temperature measuring cylinder 3 is aligned and in contact with and sealed to the second temperature measuring cylinder 4 vertically fixed on the chute passage 6 of the vacuum furnace. After the sealing is completed, the evacuation flange 10 operates to evacuate the internal space of the components above the pneumatic ball valve 8 to the preset vacuum degree, and then the pneumatic ball valve 8 is opened. The reduction motor 11 drives the drive gear 14 to rotate, so that the thermocouple 12 for temperature measurement gradually descends along the axial direction from the first temperature measuring cylinder 3, extends into the chute passage 6 of the vacuum furnace through the inner cavity of the second temperature measuring cylinder 4, and finally descends below the liquid level of the molten metal P in the chute for temperature measurement.

[0048] In an alternative embodiment, after the temperature measurement is completed, the thermocouple 12 for temperature measurement can rise to be stored in the temperature measuring component 2. The pneumatic ball valve 8 is in the closed state. The inner cavities of the first temperature measuring cylinder 3, the second temperature measuring cylinder 4 and the chute passage 6 of the vacuum furnace are no longer communicated, and the components above the vacuum ball valve are in the atmospheric state. Specifically, after the temperature measurement is completed, the reduction motor 11 drives the drive gear 14 to rotate, so that the thermocouple 12 for temperature measurement gradually rises along the axial direction from the chute passage 6 of the vacuum furnace, returns to the first temperature measuring cylinder 3 through the inner cavity of the second temperature measuring cylinder 4 for storage. Thereafter, the pneumatic ball valve 8 is closed, so that the inner cavity of the chute passage 6 of the vacuum furnace still maintains the vacuum state, and the drive mechanism 5 drives the first temperature measuring cylinder 3 to move, so that the second temperature measuring cylinder 4 is separated, and the inner cavities of the components above the pneumatic ball valve are no longer in the vacuum state.

[0049] In an alternative embodiment, a bracket 17 can also be included. The bracket 17 is used to support the first temperature measuring cylinder 3 to make the first temperature measuring cylinder 3 suspended. The upper end of the bracket 17 is pivotally connected to the barrel wall of the first temperature measuring cylinder 3. The upper end of the bracket 17 can also be used to support the drive mechanism 5. The first end of the drive mechanism 5 is fixed to the upper end of the bracket 17, and the second end of the drive mechanism 5 is pivotally connected to the outer wall of the first temperature measuring cylinder 3.

[0050] In an alternative embodiment, the temperature-measuring thermocouple 12 can be a thermocouple for one-time temperature measurement or a thermocouple for repeated continuous temperature measurement. Optionally, the temperature-measuring thermocouple 12 can be composed of two different metal or alloy wires. The two materials are welded together at one end to form a hot junction, and the other end forms a cold junction. The hot junction extends into the molten metal P in the chute channel 6 of the vacuum furnace to be measured, and the cold junction is maintained at a known temperature (which can be the ambient temperature or controlled by a specific reference temperature source). Optionally, when there is a temperature difference between the hot junction and the cold junction, an electromotive force is generated between the two different materials. The magnitude of the electromotive force is proportional to the type of material and the temperature difference at both ends. By measuring this electromotive force, the temperature of the hot junction can be calculated. Optionally, the types of the temperature-measuring thermocouple 12 can also include, but are not limited to, S, B, E, K, R, J, and T type thermocouples.

[0051] In an alternative embodiment, a sealing ring can be provided on the lower end face of the first temperature-measuring cylinder 3, and the sealing ring is used for contact sealing with the flange adapter 7.

[0052] In an alternative embodiment, an encoder 18 can also be included. The encoder 18 is installed on the drive mechanism 5 and is configured to control the drive mechanism 5 to move the temperature-measuring component 2 to a specified position. Optionally, the encoder 18 converts the position information into an electrical signal. Optionally, the encoder 18 can be an incremental encoder 18, which includes an optical disc and a photoelectric sensor. There are many fine light-transmitting or light-blocking lines on the optical disc. When the optical disc rotates, the photoelectric sensor generates an electrical signal by reading the passing light pulses. Optionally, the encoder 18 can be a magnetic encoder 18, which includes a magnetic-sensitive element (such as a Hall sensor), and detects the position through the magnetic field and the magnetic-sensitive element and sends an electrical signal. Optionally, the encoder 18 is precisely connected to the moving part (such as the motor shaft) of the drive mechanism 5, so as to ensure that the measured position data accurately reflects the actual position of the drive mechanism 5.

[0053] In order to better understand the technical solution of the present application, a specific example is described below. The details listed in this example are mainly for easy understanding and do not limit the protection scope of the present application.

[0054] Embodiment

[0055] This embodiment provides a chute liquid level temperature-measuring device. During the operation of the vacuum induction melting furnace, the chute liquid level temperature-measuring device can ensure accurate measurement and control of the temperature of the molten metal. The following is a description of the specific implementation manner of this device:

[0056] First, when the temperature measurement process starts, the pneumatic ball valve 8 is closed to ensure that the inside of the vacuum furnace chute channel 6 is in a vacuum.

[0057] Next, the drive mechanism 5 is activated to drive the first temperature measuring cylinder 3 to dock with the flange adapter 7. A sealing ring is provided on the end face at the lower end of the first temperature measuring cylinder 3, and the end face sealing ring fits tightly with the flange at the upper end of the flange adapter 7 to ensure the tightness of the internal environment. At this time, the vacuum system evacuates the internal space of the components above the pneumatic ball valve 8 to the set vacuum degree through the vacuum flange 10 to create stable environmental conditions for the temperature measurement process.

[0058] The reduction motor 11 is activated to drive the driving gear 14 to rotate. The temperature measuring rod 13 has a rack 15 structure on its outer wall. The rack 15 meshes with the driving gear 14 and moves precisely up and down in the axial direction according to the set value of the encoder 18 to control the movement of the temperature measuring thermocouple 12. The temperature measuring thermocouple 12 is accurately lowered into the chute melt in the vacuum furnace chute channel 6 to start measuring the temperature of the molten metal. The temperature measuring thermocouple 12 can be disposable or used for repeated continuous measurements, which is determined according to specific production requirements.

[0059] Once the temperature measurement is completed, the reduction motor 11 continues to operate, and the driving gear 14 meshes with the rack 15 to drive the temperature measuring rod 13 to drive the temperature measuring thermocouple 12 to rise into the first temperature measuring cylinder 3 for storage. At the same time, the pneumatic ball valve 8 is closed, and the internal space of the components above the pneumatic ball valve 8 is restored from the vacuum state to the atmospheric state through the vacuum flange 10 to prepare for the next round of temperature measurement preparation.

[0060] If temperature measurement still needs to be continued, the reduction motor 11 continuously drives, and the temperature measuring rod 13 lowers the temperature measuring thermocouple 12 into the chute melt again according to the set value of the encoder 18, and the entire temperature measurement process continues to cycle to ensure that each measurement can be carried out accurately and stably. If temperature measurement is no longer needed, after the reduction motor 11 drives the driving gear 14 and the rack 15 to drive the temperature measuring thermocouple 12 to rise into the first temperature measuring cylinder 3 for storage, the drive mechanism 5 can act again to separate the first temperature measuring cylinder 3 from the flange adapter 7 to complete a complete cycle of the temperature measuring device.

[0061] This design can effectively control the accuracy and stability of the temperature measurement process, ensure the accurate monitoring of the temperature of the molten metal during the production process, and thus improve the quality and consistency of metal products. At the same time, the automation characteristics and precise control ability of the system enable it to be widely used in high - requirement production environments, bringing significant improvements in production efficiency and reliability.

[0062] The second embodiment of this application relates to a vacuum furnace 19, the structure diagram of which is as Figure 6 shown, including the components of a conventional vacuum furnace 19 and the chute liquid level temperature measuring device described above.

[0063] The second embodiment is a product embodiment that includes the first embodiment, and the technical details in the first embodiment can be applied to this embodiment.

[0064] It should be noted that in the application documents of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one" does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. In the application documents of this patent, if it is mentioned that an act is performed according to a certain element, it means at least performing the act according to that element, including two cases: performing the act only according to that element and performing the act according to that element and other elements. Expressions such as multiple, many times, various, etc. include 2, 2 times, 2 kinds, and more than 2, more than 2 times, more than 2 kinds.

[0065] This specification includes combinations of various embodiments described herein. Separate references to embodiments (e.g., "one embodiment" or "some embodiments" or "preferred embodiments"); however, unless indicated to be mutually exclusive or clearly understood by those skilled in the art to be mutually exclusive, these embodiments are not mutually exclusive. It should be noted that, unless the context clearly indicates or requires otherwise, the word "or" is used in a non-exclusive sense in this specification.

[0066] In addition, it should be understood that the above are only preferred embodiments of this specification and are not used to limit the protection scope of this specification. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of one or more embodiments of this specification shall be included within the protection scope of one or more embodiments of this specification.

Claims

1. A chute liquid level temperature measuring device, characterized in that: include: A temperature measuring component storage cylinder (1), a temperature measuring component (2), a first temperature measuring cylinder (3), a second temperature measuring cylinder (4) and a driving mechanism (5); The tail end of the temperature measuring component (2) and at least a part of the body of the temperature measuring component (2) are located in the temperature measuring component storage cylinder (1); the head end of the temperature measuring component (2) is located in the first temperature measuring cylinder (3) in an initial state; the first temperature measuring cylinder (3) and the cavity of the temperature measuring component storage cylinder (1) are connected to form a temperature measuring component movement channel; the temperature measuring component (2) is configured to move along the axial direction in the temperature measuring component storage cylinder (1) and the first temperature measuring cylinder (3); The second temperature measuring tube (4) is fixed above the chute channel (6) of the vacuum furnace, and the inner cavity of the second temperature measuring tube (4) is connected to the chute channel (6) of the vacuum furnace; The driving mechanism (5) is connected to the outer wall of the first temperature measuring tube (3), and the driving mechanism (5) is configured to drive the lower end of the first temperature measuring tube (3) to align and contact with the upper end of the second temperature measuring tube (4) in a working state, so that the inner cavities of the first temperature measuring tube (3) and the second temperature measuring tube (4) are connected, and the temperature measuring component (2) extends through the inner cavity of the first temperature measuring tube (3) into the inner cavity of the second temperature measuring tube (4) and extends into the chute channel to measure the temperature of the liquid surface in the chute.

2. The chute liquid level temperature measuring device according to claim 1, characterized in that: The second temperature measuring cylinder (4) comprises a flange adapter (7), a pneumatic ball valve (8) and a water-cooled lower flange (9); The upper end of the pneumatic ball valve (8) is connected to the lower end of the flange adapter (7), the lower end of the pneumatic ball valve (8) is connected to the upper end of the water-cooled lower flange (9), and the lower end of the water-cooled lower flange (9) is connected to the upper surface of the vacuum furnace chute channel (6) and the inner cavity is connected; The upper end of the flange adapter (7) contacts the lower end of the first temperature measuring tube (3) and their axes coincide with each other. A vacuum flange (10) is provided on the side wall of the flange adapter (7). The vacuum flange (10) is configured to evacuate the internal space of the components above the pneumatic ball valve (8) to a set vacuum degree.

3. The chute liquid level temperature measuring device according to claim 2, characterized in that: Also includes: A reduction motor (11), wherein the temperature measuring component (2) comprises: a temperature measuring thermocouple (12), a temperature measuring rod (13), and a driving gear (14); The temperature measuring thermocouple (12) is partially arranged in the rod cavity of the temperature measuring rod (13); a protruding rack (15) is provided on the outer wall of the temperature measuring rod (13); and the protruding rack (15) is meshed with the driving gear (14); The output shaft (16) of the reduction motor (11) is connected to the driving gear (14), and the reduction motor (11) is configured to drive the driving gear (14) to rotate so that the temperature measuring rod (13) drives the temperature measuring thermocouple (12) to move in the axial direction of the temperature measuring component storage cylinder (1).

4. The chute liquid level temperature measuring device according to claim 3, characterized in that: When measuring temperature, the temperature measuring thermocouple (12) is lowered below the liquid level in the vacuum furnace chute channel (6), the pneumatic ball valve (8) is in an open state, and the first temperature measuring tube (3), the second temperature measuring tube (4) and the inner cavity of the vacuum furnace chute channel (6) are connected and have a preset vacuum degree.

5. The chute liquid level temperature measuring device according to claim 3, characterized in that: After the temperature measurement is completed, the temperature measuring thermocouple (12) rises to the temperature measuring component (2) for storage, the pneumatic ball valve (8) is in a closed state, the first temperature measuring tube (3), the second temperature measuring tube (4) and the inner cavity of the vacuum furnace chute channel (6) are no longer connected, and the components above the vacuum ball valve are in an atmospheric state.

6. The chute liquid level temperature measuring device according to claim 1, characterized in that: It also comprises a bracket (17), wherein the bracket (17) is used to support the first temperature measuring tube (3) so that the first temperature measuring tube (3) is suspended in the air, and the upper end of the bracket (17) is pivotally connected to the tube wall of the first temperature measuring tube (3).

7. The chute liquid level temperature measuring device according to claim 3, characterized in that: The temperature measuring thermocouple (12) is a one-time temperature measuring thermocouple or a repeated continuous temperature measuring thermocouple.

8. The chute liquid level temperature measuring device according to claim 2, characterized in that: A sealing ring is provided on the lower end surface of the first temperature measuring cylinder (3), and the sealing ring is used for contact sealing with the flange adapter (7).

9. The chute liquid level temperature measuring device according to claim 1, characterized in that: It also includes an encoder (18), which is installed on the driving mechanism (5), and the encoder (18) is configured to control the driving mechanism (5) so that the temperature measuring component (2) moves to a specified position.

10. A vacuum furnace, characterized in that: It comprises a chute liquid level temperature measuring device as described in any one of claims 1-9.

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