Temperature measuring device of large molten metal furnace

Abstract

The utility model relates to the technical field of temperature measuring devices, in particular to a temperature measuring device of a large molten metal furnace, which comprises a furnace body, molybdenum disilicide tubes are respectively and fixedly inserted on the left side and the right side of an inner cavity of the furnace body, the two molybdenum disilicide tubes both extend to the top end of the furnace body, two guide rods are arranged at the top end of the furnace body, and the two guide rods are arranged on the furnace body. A top plate is arranged at the top ends of the two guide rods, a replacement assembly is arranged at the top end of the furnace body, the two guide rods are slidably sleeved with sliding plates, the two sliding plates are fixedly connected with the two sides of the replacement assembly respectively, and fixing plates are arranged at the front ends of the two sliding plates. The temperature measuring device of the large molten metal furnace solves the problems that in the prior art, a molten metal temperature measuring device is not provided with a standby thermocouple, when a current thermocouple is damaged and needs to be replaced, another thermocouple can be installed only after the current thermocouple is detached, a large amount of time needs to be consumed, and the temperature in the furnace is monitored intermittently for a long time; and the safety coefficient is low.

Description

Technical Field

[0001] This utility model relates to the field of temperature measuring device technology, specifically a temperature measuring device for a large molten metal furnace. Background Technology

[0002] A molten metal furnace is a device used to melt and process molten metal. It plays an important role in metal processing and manufacturing. Molten metal furnaces provide molten metal for metal casting and are an indispensable piece of equipment in the casting process. In the metal smelting process, molten metal furnaces are used to melt and refine metals. In metal processing, molten metal furnaces can be used for processes such as melting, heating and heat treatment of metals.

[0003] Utility model application CN202021549398.1 discloses an aluminum molten metal temperature measuring mechanism for an aluminum melting furnace, including a fixing mechanism, a driving mechanism, and an execution mechanism. The driving mechanism is installed on the side of the fixing mechanism, and the execution mechanism is installed above the driving mechanism. This utility model, by setting up a driving mechanism and using a motor to control the descent of the thermocouple, can achieve precise stopping at any position, thus improving the practicality of the device. By setting up an execution mechanism, the descent height of the thermocouple can be accurately determined through scale lines, thereby precisely controlling the insertion depth of the thermocouple.

[0004] While the aforementioned patent improves the practicality of the device by setting up an actuator, allowing for accurate determination of the thermocouple's descent height via a scale line and precise control of the thermocouple's insertion depth, it lacks a spare thermocouple. When the current thermocouple is damaged and needs replacement, it must be removed before installing another thermocouple, which consumes a significant amount of time and results in prolonged intermittent monitoring of the furnace temperature, leading to a low safety factor. To address this issue, a temperature measuring device for a large molten metal furnace is provided. Utility Model Content

[0005] The purpose of this utility model is to provide a temperature measuring device for a large molten metal furnace to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: A temperature measuring device for a large molten metal furnace includes a furnace body. Molybdenum disilicide tubes are fixedly inserted into the left and right sides of the inner cavity of the furnace body. Both molybdenum disilicide tubes extend to the top of the furnace body. Two guide rods are provided at the top of the furnace body, and top plates are provided at the top of the two guide rods. A replacement assembly is provided at the top of the furnace body. Sliding plates are slidably sleeved on both guide rods. The two sliding plates are fixedly connected to both sides of the replacement assembly. A fixing plate is provided at the front end of each of the two sliding plates. A connecting rod is detachably inserted into the middle of each of the two fixing plates. A thermocouple is provided at the bottom end of each of the two connecting rods.

[0006] Preferably, the replacement component includes a bracket, a motor, a gear, and a rack. The bracket is located at the top of the furnace body, the motor is located at the rear of the bracket, the output end of the motor extends to the front end of the bracket, the gear is fixedly sleeved on the output end of the motor, and the two racks are respectively located on the side of the two slide plates that are close to each other.

[0007] Preferably, both racks mesh with gears.

[0008] Preferably, each of the fixing plates is provided with a frame at its top, and the inner cavity of the frame is provided with a quick-release assembly.

[0009] Preferably, the quick-release assembly includes a limiting rod, a insert plate, a fixing groove, and a spring assembly. Both limiting rods are disposed between the frame and the slide plate. The insert plate is slidably sleeved on the outer wall of the two limiting rods. The fixing groove is opened on one side of the outer wall of the connecting rod. The spring assembly is disposed in the inner cavity of the frame.

[0010] Preferably, the inner cavity of the fixing groove is adapted to the outer wall of the insert plate.

[0011] Preferably, the elastic component includes a spring, a rod, and a pressing plate. Two springs are respectively sleeved on the outer walls of two limiting rods. The rear ends of both springs are fixedly connected to the front end of the slide plate, and the other ends of both springs are fixedly connected to the rod. The rod is slidably inserted into the frame, and the rear end of the rod is fixedly connected to the rod. The pressing plate is disposed at the front end of the rod.

[0012] Preferably, the outer wall of the pressing plate is provided with anti-slip ridges.

[0013] Preferably, a limit plate is provided at the front end of both of the skateboards.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By driving the gear to rotate through the motor, the gear drives two racks to slide relative to each other simultaneously. This allows two sliding plates to slide relative to two fixed plates, connecting rods, and thermocouples. As one thermocouple detaches from the molybdenum disilicide tube, the other thermocouple is inserted into the inner cavity of the other molybdenum disilicide tube to monitor the temperature of the molten metal inside the furnace. This solves the problem that existing molten metal temperature measuring devices do not have spare thermocouples. When the current thermocouple is damaged and needs to be replaced, the current thermocouple must be removed before the other thermocouple can be installed, which takes a lot of time and results in long-term intermittent monitoring of the furnace temperature, leading to a low safety factor.

[0016] 2. Insert the connecting rod into the fixing plate, align the fixing groove with the insert plate. With the action of the quick-release assembly, the insert plate can be quickly inserted into the inner cavity of the fixing groove, thereby fixing the connecting rod and completing the installation of the thermocouple. It is convenient and quick, and can quickly complete the disassembly and replacement of thermocouples, saving a lot of time.

[0017] 3. By setting the limiting plate, the fixing groove can be aligned with the insertion plate when the connecting rod is against the bottom of the limiting plate, which facilitates the installation and removal of the connecting rod and the thermocouple. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the molybdenum disilicide tube of this utility model;

[0020] Figure 3 This is a schematic diagram of the quick-release component of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the fixing groove of this utility model;

[0022] Figure 5 This is a schematic diagram of the replacement component of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the motor of this utility model.

[0024] In the diagram: 1. Furnace body; 2. Molybdenum disilicide tube; 3. Guide rod; 4. Top plate; 5. Bracket; 6. Fixing plate; 7. Connecting rod; 8. Thermocouple; 9. Motor; 10. Gear; 11. Slide plate; 12. Rack; 13. Limiting plate; 14. Frame; 15. Limiting rod; 16. Insert plate; 17. Spring; 18. Inserting rod; 19. Pressing plate; 20. Fixing groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1 to 6This utility model provides a technical solution: a temperature measuring device for a large molten metal furnace, comprising a furnace body 1, with molybdenum disilicide tubes 2 fixedly inserted into the left and right sides of the inner cavity of the furnace body 1, both extending to the top of the furnace body 1. The molybdenum disilicide tubes 2 protect thermocouples 8. Two guide rods 3 are provided at the top of the furnace body 1, with a top plate 4 at the top of each guide rod 3. A replacement assembly is provided at the top of the furnace body 1. This replacement assembly allows one thermocouple 8 to be simultaneously inserted into the inner cavity of the other molybdenum disilicide tube 2 while one thermocouple 8 is detached from the other, enabling monitoring of the temperature of the molten metal inside the furnace body 1. This solves the problem that existing molten metal temperature measuring devices lack a spare thermocouple 8. When the current thermocouple 8 is damaged and needs to be replaced, the current thermocouple 8 must be removed before another thermocouple 8 can be installed, which takes a lot of time and results in long-term intermittent monitoring of the furnace temperature, leading to a low safety factor. Slide plates 11 are slidably sleeved on both guide rods 3. The two slide plates 11 are fixedly connected to both sides of the replacement component. The front end of each slide plate 11 is provided with a fixing plate 6. The middle of each fixing plate 6 is detachably inserted with a connecting rod 7. The bottom end of each connecting rod 7 is provided with a thermocouple 8. Through the setting of the thermocouple 8, the temperature in the molybdenum disilicide tube 2 can be measured from both sides. The temperature of the molten metal in the furnace body 1 can be obtained by calculating the measured temperature and the heat transfer parameters of the molybdenum disilicide tube 2.

[0027] In this embodiment, the replacement component includes a bracket 5, a motor 9, a gear 10, and racks 12. The bracket 5 is located at the top of the furnace body 1, the motor 9 is located at the rear of the bracket 5, and the output end of the motor 9 extends to the front end of the bracket 5. The gear 10 is fixedly sleeved on the output end of the motor 9. Two racks 12 are respectively located on the side of the two sliding plates 11 that are close to each other, so that the motor 9 drives the gear 10 to rotate. Since both racks 12 are meshed with the gear 10, when the gear 10 rotates, the two racks 12 can respectively drive the sliding plate 11 and the fixed plate. 6. The connecting rod 7 and the thermocouple 8 slide relative to each other simultaneously. When one thermocouple 8 disengages from the molybdenum disilicide tube 2, the other thermocouple 8 is promptly inserted into the inner cavity of the other molybdenum disilicide tube 2 to monitor the temperature of the molten metal inside the furnace body 1. This solves the problem that the existing molten metal temperature measuring device does not have a spare thermocouple 8. When the current thermocouple 8 is damaged and needs to be replaced, the current thermocouple 8 must be removed before another thermocouple 8 can be installed, which takes a lot of time and results in long-term intermittent monitoring of the furnace temperature, leading to a low safety factor.

[0028] In this embodiment, both racks 12 mesh with the gear 10, so that when the gear 10 rotates, the two racks 12 slide relative to each other simultaneously.

[0029] In this embodiment, each fixing plate 6 is provided with a frame 14 at its top. The inner cavity of the frame 14 is provided with a quick-release assembly. With the quick-release assembly, the connecting rod 7 and the thermocouple 8 can be quickly disassembled and assembled, which can save the disassembly and assembly time of the thermocouple 8 and facilitate disassembly and maintenance.

[0030] In this embodiment, the quick-release assembly includes a limiting rod 15, an insert plate 16, a fixing groove 20, and a spring assembly. The two limiting rods 15 are both disposed between the frame 14 and the slide plate 11. The insert plate 16 is slidably sleeved on the outer wall of the two limiting rods 15. The fixing groove 20 is opened on one side of the outer wall of the connecting rod 7. The spring assembly is disposed in the inner cavity of the frame 14. Under the action of the limiting rods 15, the insert plate 16 can always slide in a straight line in the horizontal direction, improving the stability of the quick-release assembly. When the insert plate 16 is inserted into the inner cavity of the fixing groove 20, the connecting rod 7 can be fixed.

[0031] In this embodiment, the inner cavity of the fixing groove 20 is adapted to the outer wall of the insert plate 16, so that the insert plate 16 can be inserted into the inner cavity of the fixing groove 20, and the insert plate 16 is inserted into the inner cavity of the fixing groove 20 to fix the connecting rod 7.

[0032] In this embodiment, the elastic component includes a spring 17, a rod 18, and a pressing plate 19. Two springs 17 are respectively sleeved on the outer walls of two limiting rods 15. The rear ends of the two springs 17 are fixedly connected to the front end of the slide plate 11, and the other ends of the two springs 17 are fixedly connected to the insert plate 16. The rod 18 is slidably inserted into the frame 14. The rear end of the rod 18 is fixedly connected to the insert plate 16. The pressing plate 19 is located at the front end of the rod 18. Pressing the pressing plate 19 causes the pressing plate 19 to push the rod 18 and the insert plate 16 to slide along the guide rod 3 toward the slide plate 11, causing the spring 17 to be compressed and generate corresponding elastic deformation, thereby generating corresponding elastic force. After the fixing groove 20 is aligned with the insert plate 16, the insert plate 16 can be reset and inserted into the inner cavity of the fixing groove 20 under the elastic force of the spring 17, thereby fixing the connecting rod 7.

[0033] In this embodiment, the outer wall of the pressing plate 19 is provided with anti-slip ridges, which can improve the roughness of the circumference of the outer wall of the pressing plate 19, thereby preventing the pressing plate 19 from slipping out of the hand when pressing.

[0034] In this embodiment, a limiting plate 13 is provided at the front end of each of the two sliding plates 11, which can make the fixing groove 20 aligned with the insert plate 16 when the connecting rod 7 abuts against the bottom of the limiting plate 13, thus facilitating the assembly and disassembly of the connecting rod 7 and the thermocouple 8.

[0035] The method of use and advantages of this utility model: During use, the working process is as follows:

[0036] When installing thermocouple 8, press the pressing plate 19 to push the insert rod 18 and the insert plate 16 to slide along the guide rod 3 towards the slide plate 11. This causes the spring 17 to be compressed and generate corresponding elastic deformation, thus generating corresponding elastic force. At this time, insert the connecting rod 7 into the central hole of the fixing plate 6, so that the top of the connecting rod 7 abuts against the bottom of the limiting plate 13. Rotate the connecting rod 7 so that the fixing groove 20 faces the insert plate 16. At the same time, release the pressing plate 19. Under the elastic force of the spring 17, the insert plate 16 can be reset and inserted into the inner cavity of the fixing groove 20, thereby fixing the connecting rod 7 and completing the installation of thermocouple 8. This is convenient and quick, and allows for rapid disassembly and replacement of thermocouple 8, saving a lot of time.

[0037] The motor 9 is started, causing the motor 9 to drive the gear 10 to rotate. Since both racks 12 are engaged with the gear 10, when the gear 10 rotates, the two racks 12 can drive the slide plate 11, the fixed plate 6, the connecting rod 7, and the thermocouple 8 to slide relative to each other simultaneously. While one thermocouple 8 is disengaged from the molybdenum disilicide tube 2, the other thermocouple 8 is promptly inserted into the inner cavity of the other molybdenum disilicide tube 2 to monitor the temperature of the molten metal inside the furnace body 1. This solves the problem that the existing molten metal temperature measuring device does not have a spare thermocouple 8. When the current thermocouple 8 is damaged and needs to be replaced, the current thermocouple 8 must be removed before the other thermocouple 8 can be installed, which takes a lot of time and results in long-term intermittent monitoring of the furnace temperature, leading to a low safety factor.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature measuring device for a large molten metal furnace, comprising a furnace body (1), characterized in that: Molybdenum disilicide tubes (2) are fixedly inserted into the left and right sides of the inner cavity of the furnace body (1). Both molybdenum disilicide tubes (2) extend to the top of the furnace body (1). Two guide rods (3) are provided at the top of the furnace body (1). A top plate (4) is provided at the top of the two guide rods (3). A replacement component is provided at the top of the furnace body (1). Slide plates (11) are slidably sleeved on both guide rods (3). The two slide plates (11) are fixedly connected to the two sides of the replacement component. A fixing plate (6) is provided at the front end of each of the two slide plates (11). A connecting rod (7) is detachably inserted into the middle of each of the two fixing plates (6). A thermocouple (8) is provided at the bottom end of each of the two connecting rods (7).

2. The temperature measuring device for a large molten metal furnace according to claim 1, characterized in that: The replacement component includes a bracket (5), a motor (9), a gear (10), and a rack (12). The bracket (5) is located at the top of the furnace body (1). The motor (9) is located at the rear of the bracket (5). The output end of the motor (9) extends to the front end of the bracket (5). The gear (10) is fixedly sleeved on the output end of the motor (9). The two racks (12) are respectively located on the side of the two slide plates (11) that are close to each other.

3. The temperature measuring device for a large molten metal furnace according to claim 2, characterized in that: Both racks (12) mesh with the gear (10).

4. The temperature measuring device for a large molten metal furnace according to claim 1, characterized in that: Each of the fixed plates (6) is provided with a frame (14) at its top, and the inner cavity of the frame (14) is provided with a quick-release assembly.

5. The temperature measuring device for a large molten metal furnace according to claim 4, characterized in that: The quick-release assembly includes a limiting rod (15), a insert plate (16), a fixing groove (20), and a spring assembly. The two limiting rods (15) are both disposed between the frame (14) and the slide plate (11). The insert plate (16) is slidably sleeved on the outer wall of the two limiting rods (15). The fixing groove (20) is opened on one side of the outer wall of the connecting rod (7). The spring assembly is disposed in the inner cavity of the frame (14).

6. The temperature measuring device for a large molten metal furnace according to claim 5, characterized in that: The inner cavity of the fixing groove (20) is adapted to the outer wall of the insert plate (16).

7. The temperature measuring device for a large molten metal furnace according to claim 5, characterized in that: The elastic component includes a spring (17), a rod (18), and a pressing plate (19). The two springs (17) are respectively sleeved on the outer walls of the two limiting rods (15). The rear ends of the two springs (17) are fixedly connected to the front end of the slide plate (11), and the other ends of the two springs (17) are fixedly connected to the insert plate (16). The rod (18) is slidably inserted into the frame (14). The rear end of the rod (18) is fixedly connected to the insert plate (16), and the pressing plate (19) is located at the front end of the rod (18).

8. The temperature measuring device for a large molten metal furnace according to claim 7, characterized in that: The outer wall of the pressing plate (19) is provided with anti-slip ridges.

9. The temperature measuring device for a large molten metal furnace according to claim 1, characterized in that: Both of the aforementioned skateboards (11) have a limit plate (13) at their front ends.

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