Furnace temperature testing tool

Abstract

The invention discloses a furnace temperature testing tool, and relates to the technical field of furnace temperature testing. The furnace temperature testing tool comprises a temperature measuring plate arranged on a furnace temperature tracker, a heat insulation protection box, a host, a wire, a clamp and a thermocouple sensor, the top of the clamp is fixedly connected with a fixing plate, the side wall of the fixing plate is fixedly connected with a supporting plate, and the fixing plate and the supporting plate are fixedly arranged on the side wall of the wire in a sleeving mode. The bottom of the supporting plate is connected with a heat insulation protective cover through a telescopic piece, and the heat insulation protective cover is arranged on the side wall of the thermocouple sensor in a sleeving mode. According to the furnace temperature testing tool, when testing is not carried out, sealing protection can be carried out on the thermocouple sensor, the thermocouple sensor is prevented from being influenced by collision, water stains and the like, and the testing accuracy and the service life of the thermocouple sensor are guaranteed; in the testing process, the thermocouple sensor can be covered with the heat insulation protective cover, it is guaranteed that the thermocouple sensor makes contact with the temperature measuring plate, the influence of hot air in the furnace can be avoided, and therefore testing can be more accurate and reliable.

Description

Technical Field

[0001] This invention relates to the field of furnace temperature testing technology, specifically to a furnace temperature testing tool. Background Technology

[0002] A furnace temperature tracker is a type of furnace temperature testing tool. It is an intelligent device used to monitor and control the temperature inside the furnace in real time. It is widely used in industrial production and mainly includes a temperature measuring plate, a main unit, a heat insulation protection box, clips, and thermocouple sensors. In use, the clips are clamped onto the temperature measuring plate to achieve contact between the thermocouple sensors and the temperature measuring plate, thereby testing the temperature of the surface of the temperature measuring plate and thus the furnace temperature.

[0003] CN208155467U discloses a furnace temperature tester, belonging to the technical field of temperature testing equipment. Its technical solution is as follows: It includes a tester body, a storage box at the lower end of the tester body, and a cover at the upper end of the storage box. The area of ​​the cover is larger than the area of ​​the storage box. Support plates perpendicular to the cover are fixedly connected to both sides of the cover, and the height of the support plates is higher than the height of the storage box. A connecting plate is fixed between each support plate, and baffles are provided at both ends of the connecting plates. The baffles, connecting plates, support plates, and cover are all made of heat-insulating material. Several positioning plates are fixedly connected to the lower end of the connecting plates. Each positioning plate has a strip groove, and support legs are hinged to both sides of each strip groove. This prevents heat from the furnace from being rapidly transferred to the tester body, thus affecting the normal operation of the tester body.

[0004] However, existing furnace temperature testing tools are not easy to protect thermocouple sensors when not in use, as they are susceptible to impacts and water stains, affecting the accuracy and lifespan of the tests. Furthermore, during testing, they are easily affected by the hot air inside the furnace, leading to inaccurate temperatures on the surface of the temperature measuring plate and affecting the accuracy of the tests. Summary of the Invention

[0005] The purpose of this invention is to provide a furnace temperature testing tool to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a furnace temperature testing tool, comprising a temperature measuring plate, a heat insulation protective box, a main unit, wires, clamps, and a thermocouple sensor mounted on a furnace temperature tracker. A fixing plate is fixedly connected to the top of the clamp, and a support plate is fixedly connected to the side wall of the fixing plate. The fixing plate and the support plate are fixedly fitted onto the side wall of the wires. A heat insulation protective cover is connected to the bottom of the support plate via a telescopic component. The heat insulation protective cover is fitted onto the side wall of the thermocouple sensor, and a movable tube is inserted into the top of the heat insulation protective cover. The movable tube is fitted onto the side wall of the wires and fixed to the thermocouple sensor. The upper end of the movable tube is connected to the bottom of the support plate via a telescopic mechanism. A sealing plate is connected to the side wall of the heat insulation protective cover via the movable mechanism, and an exhaust mechanism for discharging air from inside the heat insulation protective cover is provided on the side wall of the heat insulation protective cover.

[0007] Preferably, the telescopic component includes a first spring fixedly connected to the top of the heat insulation protective cover, and the upper end of the first spring is fixed to the bottom of the support plate.

[0008] Preferably, the telescopic mechanism includes a sleeve fixedly connected to the bottom of the support plate, and a lifting tube is inserted inside the sleeve. The lifting tube and the sleeve are fitted onto the side wall of the conductor, and a second spring is fitted onto the side wall of the sleeve.

[0009] Preferably, the moving mechanism includes two T-shaped guide rods fixedly connected to the side wall of the heat insulation protective cover, and a moving block is sleeved on the side wall of the T-shaped guide rod. The moving block is fixed to the top of the sealing plate, and a third spring is sleeved on the side wall of each T-shaped guide rod. The movement of the moving block is driven by a pushing mechanism.

[0010] Preferably, the pushing mechanism includes a pushing block fixedly connected to the side wall of the moving block, and a connecting frame fixedly connected to the side wall of the support plate. The lower end of the connecting frame is fixedly connected to the pushing frame, and the bottom of the pushing frame is provided with an inclined surface so that the pushing block can slide on the inclined surface.

[0011] Preferably, the exhaust mechanism includes a fixed box fixedly connected to the side wall of the connecting frame, and a movable plate is connected inside the fixed box via a movable component. The fixed box is connected to the interior of the heat insulation shield via an exhaust pipe, and a blower mechanism is provided on the top of the heat insulation shield.

[0012] Preferably, the blower mechanism includes an annular cover fixedly connected to the heat insulation protective cover, and the bottom of the annular cover has multiple air outlets. The annular cover is connected to the fixed box through an air supply pipe.

[0013] Preferably, the moving component includes a guide rod fixedly connected to the side wall of the moving plate, and the other end of the guide rod passes through the side wall of the fixed box and is fixedly connected to a disc, the movement of which is achieved by a pushing component.

[0014] Preferably, the pushing component includes an L-shaped rotating plate, which is connected to the bottom of the fixed box via the rotating component. The lower end of the rotating plate abuts against the side wall of the moving block, and the side wall of the rotating plate is provided with a sliding groove. A pushing pin is fixedly connected to the side wall of the disc, and the pushing pin is inserted into the sliding groove.

[0015] Preferably, the rotating assembly includes a fixed frame fixedly connected to the bottom of the fixed box, and the rotating plate is rotatably connected to the side wall of the fixed frame via a torsion shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) This furnace temperature testing tool, by setting a moving mechanism, can seal the heat insulation cover under the action of the third spring when no test is being performed, thereby sealing and protecting the thermocouple sensor from impact and water stains, ensuring the accuracy of the test and its service life. When the furnace temperature needs to be tested, the temperature measuring plate is hung on the bracket on the conveyor line by the first mounting bracket, and the heat insulation cover is hung on the bracket on the conveyor line by the second mounting bracket. Then, the clamp is opened and moved so that the side wall of the temperature measuring plate is inside the clamp and the clamp head below the clamp abuts against one side of the side wall of the temperature measuring plate. Then, the upper clamp head is gradually released. At this time, the heat insulation cover can be moved closer to the side wall of the temperature measuring plate by the fixing plate, the support plate and the first spring. When the heat insulation cover abuts against the side wall of the temperature measuring plate, the heat insulation cover stops moving. When the support plate continues to move, the first spring is gradually released. As the compression progresses, the telescopic mechanism drives the moving tube downwards along the heat insulation shield. Simultaneously, the connecting frame moves the pushing frame, causing the inclined surface to abut against the side wall of the pushing block. This pushes the moving block away from the heat insulation shield along the side wall of the T-shaped guide rod. The third spring is compressed, causing the sealing plate to move away from the thermocouple sensor and into the heat insulation shield. This allows the moving tube and thermocouple sensor to continue moving downwards, bringing the thermocouple sensor against the side wall of the temperature measuring plate. As the support plate continues to move, the second spring is compressed, causing the upper clamp of the clamp to abut against the other side of the temperature measuring plate, clamping and fixing the clamp to the temperature measuring plate. Under the action of the second spring, there is a pre-tightening force between the thermocouple sensor and the temperature measuring plate, resulting in better adhesion. Furthermore, the heat insulation shield prevents the influence of hot air inside the furnace, making the test more accurate and reliable.

[0018] (2) This furnace temperature testing tool, by setting an exhaust mechanism, can abut against the lower end of the rotating plate when the moving block moves away from the heat insulation shield, thereby pushing the rotating plate to rotate clockwise along the torsion shaft and causing the push pin to slide upward along the slide groove. Then, by pushing the moving plate through the disc and guide rod, a negative pressure is generated in the fixed box, so that the air can be evacuated through the exhaust pipe, allowing the air in the heat insulation shield to enter the fixed box for temporary storage through the exhaust pipe, thus realizing the exhaust operation of the heat insulation shield. When the thermocouple sensor tests the temperature of the temperature measuring plate surface, the influence of residual air is avoided, making the test more accurate and reliable.

[0019] (3) This furnace temperature testing tool, by setting up a blower mechanism, etc., after the test is completed, the clamp is gradually opened, the second spring is gradually reset, and after the second spring is reset, the first spring is gradually reset, so that the thermocouple sensor gradually moves into the heat insulation protective cover. In addition, the sealing plate can move and reset under the action of the third spring and seal the heat insulation protective cover. At the same time, the rotating plate can rotate counterclockwise and reset under the action of the torque shaft, thereby driving the moving plate to move and reset. At this time, the air temporarily stored in the fixed box can be squeezed and enter the annular cover through the air supply pipe, and blown onto the surface of the thermocouple sensor through the air outlet, so as to cool it down and ensure its service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure in use of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the overall structure of the clip and heat insulation cover in this invention;

[0023] Figure 4 This is a partial cross-sectional view of the fixed box and the heat insulation protective cover in this invention;

[0024] Figure 5 This is a schematic diagram of the annular cover in this invention;

[0025] Figure 6 This is a partial cross-sectional view of the fixing box in this invention;

[0026] Figure 7 for Figure 1 A magnified structural diagram of point A in the middle.

[0027] In the diagram: 101, Temperature measuring plate; 102, Heat insulation box; 103, Main unit; 104, Wire; 105, Clip; 106, Thermocouple sensor; 107, First mounting bracket; 108, Second mounting bracket; 201, Sleeve; 202, Lifting pipe; 203, Second spring; 301, T-shaped guide rod; 302, Moving block; 303, Third spring; 401, Pushing block; 402, Connecting bracket; 403, Pushing bracket; 404 501. Inclined surface; 502. Fixed box; 503. Moving plate; 504. Air outlet pipe; 605. Annular cover; 606. Air outlet; 607. Air supply pipe; 708. Guide rod; 709. Disc; 800. Rotating plate; 800. Slide groove; 800. Push pin; 901. Fixed frame; 902. Torque shaft; 10. First spring; 11. Fixed plate; 12. Support plate; 13. Moving pipe; 14. Heat insulation protective cover; 15. Sealing plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-7This invention provides a furnace temperature testing tool, including a temperature measuring plate 101, a heat insulation protection box 102, a main unit 103, a wire 104, a clamp 105, and a thermocouple sensor 106 mounted on a furnace temperature tracker. A first mounting bracket 107 is fixedly connected to the temperature measuring plate 101, and a second mounting bracket 108 is fixedly connected to the heat insulation protection box 102. A fixing plate 11 is fixedly connected to the top of the clamp 105, and a support plate 12 is fixedly connected to the side wall of the fixing plate 11. The fixing plate 11 and the support plate 12 are fixedly sleeved on the side wall of the wire 104, and a heat insulation protection cover 14 is connected to the bottom of the support plate 12 through a telescopic component. The heat insulation protection cover 14 is sleeved on the side wall of the thermocouple sensor 106, and a movable tube 13 is inserted into the top of the heat insulation protection cover 14. Three sets are installed on the side wall of the wire 104 and fixed to the thermocouple sensor 106. The upper end of the moving tube 13 is connected to the bottom of the support plate 12 through a telescopic mechanism. The side wall of the heat insulation protective cover 14 is connected to the sealing plate 15 through the moving mechanism. The side wall of the heat insulation protective cover 14 is provided with an exhaust mechanism for venting the air inside the heat insulation protective cover 14. When not being tested, the thermocouple sensor 106 can be sealed and protected to avoid the impact of collisions and water stains, thus ensuring the accuracy of the test and its service life. During the test, the heat insulation protective cover 14 can be used to cover the thermocouple sensor 106 to ensure that the thermocouple sensor 106 is in contact with the temperature measuring plate 101, thus avoiding the influence of hot air inside the furnace, thereby making the test more accurate and reliable.

[0030] Please see Figure 4 The telescopic component includes a first spring 10 fixedly connected to the top of the heat insulation shield 14, and the upper end of the first spring 10 is fixed to the bottom of the support plate 12. When the heat insulation shield 14 abuts against the side wall of the temperature measuring plate 101, the heat insulation shield 14 no longer moves. When the support plate 12 continues to move, the first spring 10 is gradually compressed.

[0031] Please see Figure 3 and Figure 4 The telescopic mechanism includes a sleeve 201 fixedly connected to the bottom of the support plate 12, and a lifting tube 202 is inserted into the sleeve 201. The lifting tube 202 and the sleeve 201 are sleeved on the side wall of the wire 104, and a second spring 203 is sleeved on the side wall of the sleeve 201. When the support plate 12 continues to move, the second spring 203 can be compressed. Under the action of the second spring 203, there is a pre-tightening force between the thermocouple sensor 106 and the temperature measuring plate 101, which can make the fit better.

[0032] Please see Figure 3 and Figure 4The moving mechanism includes two T-shaped guide rods 301 fixedly connected to the side wall of the heat insulation protective cover 14, and a moving block 302 is sleeved on the side wall of the T-shaped guide rod 301. The moving block 302 is fixed to the top of the sealing plate 15, and a third spring 303 is sleeved on the side wall of each T-shaped guide rod 301. The movement of the moving block 302 is driven by a pushing mechanism, which pushes the sealing plate 15 to move and can be reset under the action of the third spring 303, thereby realizing the closing and opening of the sealing plate 15.

[0033] Please see Figure 3 and Figure 4 The pushing mechanism includes a pushing block 401 fixedly connected to the side wall of the moving block 302, and a connecting frame 402 fixedly connected to the side wall of the support plate 12. A pushing frame 403 is fixedly connected to the lower end of the connecting frame 402, and an inclined surface 404 is provided at the bottom of the pushing frame 403, allowing the pushing block 401 to slide on the inclined surface 404. When the heat insulation cover 14 abuts against the side wall of the temperature measuring plate 101, the heat insulation cover 14 stops moving. When the support plate 12 continues to move, the first spring 10 is gradually compressed. At this time, the telescopic mechanism can drive the moving tube 13 to move downward along the heat insulation cover 14. At the same time, the connecting frame 402 drives the pushing frame 403 to move, so that the inclined surface 404 abuts against the side wall of the pushing block 401, thereby pushing the moving block 302 to move away from the heat insulation cover 14 along the side wall of the T-shaped guide rod 301. The third spring 303 is compressed and drives the sealing plate 15 to move away from the thermocouple sensor 106 and into the heat insulation cover 14.

[0034] Please see Figure 3 , Figure 4 and Figure 6 The exhaust mechanism includes a fixed box 501 fixedly connected to the side wall of the connecting frame 402, and a movable plate 502 connected inside the fixed box 501 via a movable component. The fixed box 501 is connected to the interior of the heat insulation shield 14 via an exhaust pipe 503. A first one-way valve is provided inside the exhaust pipe 503, and the conduction direction of the first one-way valve is from the heat insulation shield 14 to the fixed box 501. A blower mechanism is provided on the top of the heat insulation shield 14. The movable component drives the movable plate 502 to move, so that a negative pressure is generated inside the fixed box 501, thereby enabling the exhaust operation through the exhaust pipe 503. This allows the air inside the heat insulation shield 14 to enter the fixed box 501 for temporary storage, realizing the exhaust operation of the heat insulation shield 14. When the thermocouple sensor 106 tests the temperature of the surface of the temperature measuring plate 101, the influence of residual air is avoided, making the test more accurate and reliable.

[0035] Please see Figure 3 , Figure 5 and Figure 6The blower mechanism includes an annular cover 601 fixedly connected to the heat insulation protective cover 14, and multiple air outlets 602 are provided at the bottom of the annular cover 601. The annular cover 601 is connected to the fixed box 501 through an air supply pipe 603. A second one-way valve is provided in the air supply pipe 603, and the conduction direction of the second one-way valve is from the fixed box 501 to the annular cover 601. After the test is completed, the clamp 105 is gradually opened, and the second spring 203 is gradually reset. After the second spring 203 is reset, the first spring 10 is gradually reset, so that the thermocouple sensor 106 gradually moves to the Inside the heat insulation protective cover 14, the sealing plate 15 can move and reset under the action of the third spring 303 and seal the heat insulation protective cover 14. At the same time, the rotating plate 801 can rotate counterclockwise and reset under the action of the torque shaft 902, thereby driving the moving plate 502 to move and reset. At this time, the air temporarily stored in the fixed box 501 can be compressed and enter the annular cover 601 through the air supply pipe 603, and blown onto the surface of the thermocouple sensor 106 through the air outlet 602, so as to facilitate its cooling and ensure its service life.

[0036] Please see Figure 3 and Figure 6 The moving component includes a guide rod 701 fixedly connected to the side wall of the moving plate 502, and the other end of the guide rod 701 passes through the side wall of the fixed box 501 and is fixedly connected to a disc 702. The disc 702 is moved by a pushing component, which pushes the disc 702 to move, and the guide rod 701 drives the moving plate 502 to move.

[0037] Please see Figures 3-6 The pushing component includes an L-shaped rotating plate 801, which is connected to the bottom of the fixed box 501 via the rotating component. The lower end of the rotating plate 801 abuts against the side wall of the moving block 302, and the side wall of the rotating plate 801 is provided with a sliding groove 802. A pushing pin 803 is fixedly connected to the side wall of the disc 702, and the pushing pin 803 is inserted into the sliding groove 802. When the moving block 302 moves away from the heat insulation cover 14, it abuts against the lower end of the rotating plate 801, thereby pushing the rotating plate 801 to rotate along the rotating component and causing the pushing pin 803 to slide upward along the sliding groove 802. In turn, the moving plate 502 is moved by the disc 702 and the guide rod 701.

[0038] Please see Figure 6 The rotating assembly includes a fixed frame 901 fixedly connected to the bottom of the fixed box 501, and the rotating plate 801 is rotatably connected to the side wall of the fixed frame 901 through a torque shaft 902, which ensures the normal rotation of the rotating plate 801 and enables the rotating plate 801 to rotate and reset under the action of the torque shaft 902.

[0039] Working principle: When not being tested, the sealing plate 15 can seal the heat insulation cover 14 under the action of the third spring 303, thereby sealing and protecting the thermocouple sensor 106 from impact and water stains, ensuring the accuracy of its test and its service life. When the furnace temperature needs to be tested, the temperature measuring plate 101 is hung on the bracket on the conveyor line through the first mounting bracket 107, and the heat insulation box 102 is hung on the bracket on the conveyor line through the second mounting bracket 108. Then, the clamp 105 is opened and moved so that the side wall of the temperature measuring plate 101 is inside the clamp 105 and the clamp head below the clamp 105 abuts against one side of the side wall of the temperature measuring plate 101.

[0040] Next, the upper clamp is gradually released. At this time, the heat insulation cover 14 can be moved towards the side wall of the temperature measuring plate 101 via the fixing plate 11, the support plate 12, and the first spring 10. When the heat insulation cover 14 abuts against the side wall of the temperature measuring plate 101, the heat insulation cover 14 stops moving. As the support plate 12 continues to move, the first spring 10 is gradually compressed. At this time, the moving tube 13 can be moved downward along the heat insulation cover 14 via the telescopic mechanism. At the same time, the connecting bracket 402 drives the movement of the heat insulation cover 14 downward. The pusher 403 moves so that the inclined surface 404 abuts against the side wall of the pusher block 401, thereby pushing the moving block 302 to move away from the heat insulation shield 14 along the side wall of the T-shaped guide rod 301. The third spring 303 is compressed and drives the sealing plate 15 to move away from the thermocouple sensor 106 and into the heat insulation shield 14, so that the moving tube 13 and the thermocouple sensor 106 can continue to move downward and make the thermocouple sensor 106 abut against the side wall of the temperature measuring plate 101.

[0041] As the support plate 12 continues to move, the second spring 203 can be compressed, causing the upper clamp of the clamp 105 to abut against the other side of the side wall of the temperature measuring plate 101, thereby clamping and fixing the clamp 105 to the temperature measuring plate 101. Under the action of the second spring 203, there is a pre-tightening force between the thermocouple sensor 106 and the temperature measuring plate 101, which can make the fit better. Furthermore, under the action of the heat insulation protective cover 14, the influence of hot air inside the furnace can be avoided, thereby making the test more accurate and reliable.

[0042] When the moving block 302 moves away from the heat insulation shield 14, it abuts against the lower end of the rotating plate 801, thereby pushing the rotating plate 801 to rotate clockwise along the torque shaft 902 and causing the push pin 803 to slide upward along the slide groove 802. This, in turn, pushes the moving plate 502 to move through the disc 702 and the guide rod 701, creating a negative pressure inside the fixed box 501. This allows for air extraction through the vent pipe 503, enabling the air inside the heat insulation shield 14 to enter the fixed box 501 for temporary storage. This exhaust operation of the heat insulation shield 14 avoids the influence of residual air when the thermocouple sensor 106 tests the temperature of the surface of the temperature measuring plate 101, making the test more accurate and reliable.

[0043] After the test is completed, the clamp 105 is gradually opened, the second spring 203 is gradually reset, and after the second spring 203 is reset, the first spring 10 is gradually reset, so that the thermocouple sensor 106 gradually moves into the heat insulation cover 14. At the same time, the sealing plate 15 can move and reset under the action of the third spring 303 and seal the heat insulation cover 14. Simultaneously, the rotating plate 801 can rotate counterclockwise and reset under the action of the torque shaft 902, thereby driving the moving plate 502 to move and reset. At this time, the air temporarily stored in the fixed box 501 can be compressed and enter the annular cover 601 through the air supply pipe 603, and blown onto the surface of the thermocouple sensor 106 through the air outlet 602, so as to cool it down and ensure its service life.

[0044] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A furnace temperature testing tool, comprising a temperature measuring plate (101), a heat insulation protection box (102), a main unit (103), wires (104), clips (105), and a thermocouple sensor (106) mounted on a furnace temperature tracker, characterized in that: The top of the clamp (105) is fixedly connected to a fixing plate (11), and the side wall of the fixing plate (11) is fixedly connected to a support plate (12). The fixing plate (11) and the support plate (12) are fixedly sleeved on the side wall of the wire (104), and the bottom of the support plate (12) is connected to a heat insulation protective cover (14) through a telescopic component. The heat insulation protective cover (14) is sleeved on the side wall of the thermocouple sensor (106), and a moving tube (13) is inserted into the top of the heat insulation protective cover (14). The moving tube (13) is sleeved on the side wall of the wire (104) and fixed to the thermocouple sensor (106). The upper end of the moving tube (13) is connected to the bottom of the support plate (12) through a telescopic mechanism. The side wall of the heat insulation protective cover (14) is connected to a sealing plate (15) through a moving mechanism, and the side wall of the heat insulation protective cover (14) is provided with an exhaust mechanism for exhausting the air inside the heat insulation protective cover (14).

2. The furnace temperature testing tool according to claim 1, characterized in that: The telescopic component includes a first spring (10) fixedly connected to the top of the heat insulation protective cover (14), and the upper end of the first spring (10) is fixed to the bottom of the support plate (12).

3. The furnace temperature testing tool according to claim 1, characterized in that: The telescopic mechanism includes a sleeve (201) fixedly connected to the bottom of the support plate (12), and a lifting tube (202) is inserted inside the sleeve (201). The lifting tube (202) and the sleeve (201) are sleeved on the side wall of the wire (104), and a second spring (203) is sleeved on the side wall of the sleeve (201).

4. The furnace temperature testing tool according to claim 1, characterized in that: The moving mechanism includes two T-shaped guide rods (301) fixedly connected to the side wall of the heat insulation protective cover (14), and a moving block (302) is sleeved on the side wall of the T-shaped guide rod (301). The moving block (302) is fixed to the top of the sealing plate (15), and a third spring (303) is sleeved on the side wall of each T-shaped guide rod (301). The movement of the moving block (302) is driven by a pushing mechanism.

5. The furnace temperature testing tool according to claim 4, characterized in that: The pushing mechanism includes a pushing block (401) fixedly connected to the side wall of the moving block (302), and a connecting frame (402) fixedly connected to the side wall of the support plate (12). A pushing frame (403) is fixedly connected to the lower end of the connecting frame (402), and an inclined surface (404) is provided at the bottom of the pushing frame (403) so that the pushing block (401) can slide on the inclined surface (404).

6. The furnace temperature testing tool according to claim 5, characterized in that: The exhaust mechanism includes a fixed box (501) fixedly connected to the side wall of the connecting frame (402), and a movable plate (502) is connected inside the fixed box (501) via a movable component. The fixed box (501) is connected to the interior of the heat insulation shield (14) via an exhaust pipe (503), and a blower mechanism is provided on the top of the heat insulation shield (14).

7. A furnace temperature testing tool according to claim 6, characterized in that: The blower mechanism includes an annular cover (601) fixedly connected to the heat insulation protective cover (14), and the bottom of the annular cover (601) is provided with multiple air outlets (602). The annular cover (601) is connected to the fixed box (501) through an air supply pipe (603).

8. A furnace temperature testing tool according to claim 7, characterized in that: The moving component includes a guide rod (701) fixedly connected to the side wall of the moving plate (502), and the other end of the guide rod (701) passes through the side wall of the fixed box (501) and is fixedly connected to a disc (702). The movement of the disc (702) is driven by a pushing component.

9. A furnace temperature testing tool according to claim 8, characterized in that: The pushing assembly includes an L-shaped rotating plate (801), and the rotating plate (801) is connected to the bottom of the fixed box (501) through the rotating assembly. The lower end of the rotating plate (801) abuts against the side wall of the moving block (302), and the side wall of the rotating plate (801) is provided with a sliding groove (802). The side wall of the disc (702) is fixedly connected with a pushing pin (803), and the pushing pin (803) is inserted into the sliding groove (802).

10. A furnace temperature testing tool according to claim 9, characterized in that: The rotating assembly includes a fixed frame (901) fixedly connected to the bottom of the fixed box (501), and the rotating plate (801) is rotatably connected to the side wall of the fixed frame (901) via a torsion shaft (902).

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