Temperature measuring switching device of high temperature experimental furnace

Abstract

The utility model discloses a kind of temperature measuring switching devices of high-temperature experimental furnace, it is related to temperature measuring switching technical field, including furnace cover, shell, lifting structure and switching structure, the middle part of furnace cover top surface is provided with positioning boss, positioning boss is vertically provided with the temperature measuring opening that is communicated with experimental furnace interior, shell is installed in the top of cover plate, shell bottom is provided with the limiting hole that is communicated with temperature measuring opening position corresponding, lifting structure includes gear, first rack and second rack.The temperature measuring switching device of this high-temperature experimental furnace realizes the automatic switching of two temperature measuring components by the joint action of lifting structure and switching structure, not only can improve switching efficiency, by reducing temperature measuring switching period to ensure the coherence accuracy of monitoring data, also can accurately keep warm and carry out the timing of temperature measuring switching, select optimal temperature measuring mode in key temperature zone, effectively reduce cumulative error, ensure temperature measurement accuracy, greatly improve the practicability and use effect of device.

Description

Technical Field

[0001] This utility model relates to the field of temperature measurement switching technology, and more specifically, to a temperature measurement switching device for a high-temperature experimental furnace. Background Technology

[0002] A high-temperature experimental furnace is an experimental device used for material processing, sintering, melting, heat treatment, or chemical reactions in a high-temperature environment. It is widely used in materials science, metallurgy, ceramics, chemical engineering, and other fields. The temperature measuring elements (such as thermocouples and infrared thermometers) of a high-temperature experimental furnace each have their optimal operating range. Exceeding this range can lead to increased errors or damage. To prevent a single thermocouple from failing or becoming inaccurate at excessive temperatures, temperature switching is often required during the use of a high-temperature experimental furnace. This involves switching the temperature measuring element or method between different temperature ranges. Temperature switching is a crucial operation to ensure the accuracy of temperature measurements and the safety of the equipment.

[0003] Chinese utility model patent CN214747231U discloses an infrared temperature measurement switching device for a microwave high-temperature experimental furnace, including a base, a furnace cover, and a temperature measuring port. A rotating shaft is fixedly connected to the upper surface of the base, and a movable plate is rotatably connected to the rotating shaft. The movable plate has two positioning holes located on the same arc line. A fixed plate abuts against the movable plate, which is located on the upper surface of the base and has positioning pins that mate with the positioning holes. This technical solution allows selection of a high-temperature or low-temperature infrared temperature measuring probe by rotating the movable plate. The steel ball interlocks with the positioning hole, positioning the movable plate and allowing for flexible switching between the high and low temperature infrared temperature measuring probes to the center of the furnace cavity. This method is convenient and offers high measurement accuracy. However, while this technical solution enables probe switching, it requires manual operation. This not only results in low switching efficiency and a long switching time, making it difficult to ensure continuous monitoring data, but also makes it difficult to accurately control the switching time, leading to cumulative errors and lower safety. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a temperature measurement switching device for a high-temperature experimental furnace, which realizes the switching of two temperature measuring components by electric means, improves the switching efficiency, ensures the continuity and accuracy of monitoring data, reduces cumulative errors, and ensures the accuracy of temperature measurement.

[0005] To achieve the above objectives, this utility model provides a temperature measurement switching device for a high-temperature experimental furnace, installed on the furnace cover. A positioning protrusion is provided in the center of the top surface of the furnace cover, and a temperature measuring port communicating with the interior of the experimental furnace is vertically opened on the positioning protrusion. The device includes:

[0006] The outer casing is installed on the top of the furnace cover, and the bottom of the outer casing has a limiting hole that corresponds to and communicates with the position of the temperature measuring port;

[0007] The switching structure includes a first slide block horizontally disposed inside the housing and a second slide block located on both sides of the width direction of the first slide block, a first temperature measuring component slidably mounted on the bottom of the first slide block, a second temperature measuring component slidably mounted on the bottom of the two second slide blocks, two guide plates fixedly mounted on the bottom of the inner cavity of the housing, and a pushing component respectively mounted in the first slide block and the second slide block;

[0008] A lifting structure is used to drive the first slide block and the second slide block to move in opposite directions in the vertical direction;

[0009] The two guide plates are respectively installed obliquely below the first temperature measuring component and the second temperature measuring component, and the bottom ends of the two guide plates are located on the outer periphery of the limiting hole;

[0010] The pushing component is adapted to push the first temperature measuring component and the second temperature measuring component to move towards the side closer to the guide plate. When the first slide or the second slide moves down, the first temperature measuring component or the second temperature measuring component will move downward against the guide plate until it extends into the temperature measuring port through the limiting hole to perform temperature measurement.

[0011] Furthermore, the pushing component includes a light rod and an elastic element horizontally installed inside the first slide and the second slide. The elastic element is sleeved on the outside of the light rod, and one end of the elastic element away from the inner wall of the housing is fixedly connected to the first slide or the second slide.

[0012] Furthermore, a first slider is installed at the top of the first temperature measuring component, which is slidably adapted to the inner wall of the first slide block, and the light rod in the first slide block passes horizontally through the first slider.

[0013] Furthermore, the top of the second temperature measuring component is equipped with a second slider that slides and adapts to the inner wall of the two second slide blocks. The second slider is U-shaped, and the light rods in the two second slide blocks pass horizontally through the second slider.

[0014] Furthermore, the limiting hole includes a positioning groove corresponding to the position of the positioning protrusion and an extension hole corresponding to the position of the temperature measuring port. The extension hole is located directly above the positioning groove and communicates with the positioning groove. The inner diameter of the positioning groove is adapted to the outer wall size of the positioning protrusion. The outer wall size of the first temperature measuring component and the second temperature measuring component is smaller than the inner diameter of the extension hole.

[0015] Furthermore, the inner wall of the temperature measuring port is fitted with a sealing element that matches the outer wall size of the first temperature measuring component and the second temperature measuring component, so as to prevent temperature loss caused by gas leakage during the temperature measurement process.

[0016] Furthermore, the lifting structure includes a gear that is horizontally rotatably installed inside the housing and a first rack and a second rack that are vertically slidably inserted into the top of the housing and mesh with the gear. The first rack and the second rack are symmetrically arranged. A drive member that is fixedly connected to the gear is installed on the outside of the housing. The bottom of the first rack is fixedly connected to the first slide block, and the bottom of the second rack is fixedly connected to two second slide blocks.

[0017] Furthermore, a raised edge structure is provided on the bottom periphery of the outer shell, and several screws that are threadedly connected to the furnace cover are vertically inserted into the top of the raised edge structure.

[0018] Furthermore, the top of the convex structure has several countersunk holes for arranging the screws, and the top of the furnace cover has a threaded groove for threaded connection with the screws.

[0019] Compared with the prior art, this utility model has the following advantages and effects:

[0020] The temperature measurement switching device of the high-temperature experimental furnace in this invention achieves automatic switching between two temperature measuring components through the combined action of the lifting structure and the switching structure. This not only improves the switching efficiency and ensures the continuity and accuracy of monitoring data by reducing the temperature measurement switching cycle, but also accurately maintains the timing of temperature measurement switching, selects the optimal temperature measurement method in the critical temperature zone, effectively reduces cumulative errors, ensures the accuracy of temperature measurement, and greatly enhances the practicality and effectiveness of the device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the temperature measurement switching device of the high-temperature experimental furnace in this embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the front cross-sectional structure of the temperature measurement switching device of the high-temperature experimental furnace in this embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the switching structure of the temperature measurement switching device of the high-temperature experimental furnace in this embodiment of the present invention;

[0024] Figure 4 for Figure 2 A schematic diagram of the structure at point A in the middle.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Furnace lid;

[0027] 11-Positioning protrusion; 12-Temperature measuring port; 13-Seal; 14-Threaded groove;

[0028] 2-Outer shell;

[0029] 21-Positioning groove; 22-Extended hole; 23-Raised edge structure; 231-Counterhead hole; 232-Screw;

[0030] 3- Lifting structure;

[0031] 31-Gear; 32-First rack; 33-Second rack;

[0032] 4-Drive components;

[0033] 5-Switch structure;

[0034] 51-First slide block; 511-First slider; 52-Second slide block; 521-Second slider; 53-Pushing component; 531-Smooth rod; 532-Elastic component; 54-First temperature measuring component; 55-Second temperature measuring component; 56-Guide plate. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Please see Figure 1-4 As shown, this utility model embodiment provides a temperature measurement switching device for a high-temperature experimental furnace, including a furnace cover 1, an outer shell 2, a lifting structure 3 and a switching structure 5. A positioning protrusion 11 is provided in the middle of the top surface of the furnace cover 1, and a temperature measuring port 12 communicating with the interior of the experimental furnace is vertically opened on the positioning protrusion 11.

[0038] The outer casing 2 is installed on the top of the furnace cover 1. The bottom of the outer casing 2 has a limiting hole that corresponds to and communicates with the position of the temperature measuring port 12. The lifting structure 3 includes a gear 31, a first rack 32 and a second rack 33. The gear 31 is horizontally rotatably installed inside the outer casing 2. The first rack 32 and the second rack 33 are vertically slidably inserted into the top of the outer casing 2 and mesh with the gear 31. The first rack 32 and the second rack 33 are symmetrically arranged. A drive component 4 is installed on the outside of the outer casing 2 and is fixedly connected to the gear 31. This allows the gear 31 to be rotated by the operation of the drive component 4.

[0039] The switching structure 5 includes a first slide 51, a second slide 52, a first temperature measuring component 54, a second temperature measuring component 55, a guide plate 56, and a pushing component 53. The first slide 51 and the two second slides 52 are horizontally arranged in the inner cavity of the outer shell 2, and the two second slides 52 are respectively located on both sides of the width direction of the first slide 51. The first temperature measuring component 54 is slidably installed at the bottom of the first slide 51, and the second temperature measuring component 55 is slidably installed at the bottom of the second slide 52. The two guide plates 56 are fixedly installed at the bottom of the inner cavity of the outer shell 2, and the pushing component 53 is installed in the first slide 51 and the second slide 52 respectively.

[0040] The lifting structure 3 is used to drive the first slide 51 and the second slide 52 to move in opposite directions in the vertical direction; the two guide plates 56 are respectively installed obliquely below the first temperature measuring component 54 and the second temperature measuring component 55, and the bottom ends of the two guide plates 56 are located on the outer periphery of the limiting hole.

[0041] The pushing component 53 is adapted to push the first temperature measuring component 54 and the second temperature measuring component 55 to move towards the side closer to the guide plate 56. When the first slide 51 or the second slide 52 moves down, the first temperature measuring component 54 or the second temperature measuring component 55 will move downward against the guide plate 56 until it extends into the temperature measuring port 12 through the limiting hole to perform temperature measurement.

[0042] As a further description of the above scheme, when the driving component 4 rotates and drives the gear 31 to rotate, the first rack 32 and the second rack 33 drive the first slide 51 and the second slide 52 to move in opposite directions. If the first rack 32 drives the first slide 51 to move upward, the second rack 33 drives the second slide 52 to move downward. During the downward movement of the second slide 52, the second temperature measuring component 55 moves downward synchronously with the second slide 52. When the second temperature measuring component 55 contacts the guide plate 56, as the second temperature measuring component 55 continues to move downward, its position will get closer and closer to the temperature measuring port 12 until it is fully inserted into the temperature measuring port 12. When the driving component 4 rotates in the opposite direction, the first temperature measuring component 54 is inserted into the temperature measuring port 12, thereby facilitating the switching between the first temperature measuring component 54 and the second temperature measuring component 55 by controlling the operation of the driving component 4.

[0043] Please see Figure 2-4 As shown, the pushing component 53 includes a smooth rod 531 and an elastic element 532. The smooth rod 531 and the elastic element 532 are both horizontally installed inside the first slide block 51 and the second slide block 52. The elastic element 532 is sleeved on the outside of the smooth rod 531, and one end of the elastic element 532 away from the inner wall of the outer casing 2 is fixedly connected to the first slide block 51 or the second slide block 52.

[0044] As a preferred embodiment of the above solution, the elastic element 532 is a spring structure, and the length of the spring structure when it is not under force is greater than the length of the first slide 51 and the second slide 52, so that the elastic element 532 can push the object located in the first slide 51 or the second slide 52 toward the inner wall of the outer shell 2.

[0045] Please see Figure 2-3 As shown, the top of the first temperature measuring component 54 is equipped with a first slider 511 that is slidably adapted to the inner wall of the first slide block 51, and the light rod 531 in the first slide block 51 passes horizontally through the first slider 511; the light rod 531 is conveniently used to prevent the first slider 511 from disengaging from the first slide block 51, and the fit between the outer wall size of the first slider 511 and the inner wall of the first slide block 51 helps to ensure the stability of the first slider 511 and prevent the first slider 511 from rotating around the light rod 531. In addition, the elastic element 532 provided in the first slide block 51 can also push the first slider 511 to move away from the second slide block 52.

[0046] Please see Figure 2-3 As shown, the top of the second temperature measuring component 55 is equipped with a second slider 521 that slides and adapts to the inner walls of the two second slide blocks 52. The second slider 521 is U-shaped, and the smooth rods 531 in the two second slide blocks 52 pass horizontally through the second slider 521. This facilitates the use of the smooth rods 531 in the second slide blocks 52 to prevent the second slider 521 from detaching from the second slide blocks 52. The sliding connection between the second slider 521 and the two second slide blocks 52 also restricts the rotation of the second slider 521, thereby maintaining the stability of the second slider 521 and the second temperature measuring component 55. In addition, the elastic element 532 provided in the second slide block 52 can push the second slider 521 to move away from the first slide block 51.

[0047] Please see Figure 2As shown, the limiting hole includes a positioning groove 21 corresponding to the position of the positioning protrusion 11 and an extension hole 22 corresponding to the position of the temperature measuring port 12. The extension hole 22 is located directly above the positioning groove 21 and is connected to the positioning groove 21. The inner diameter of the positioning groove 21 is adapted to the outer wall size of the positioning protrusion 11. The outer wall size of the first temperature measuring component 54 and the second temperature measuring component 55 is smaller than the inner diameter of the extension hole 22. This facilitates the smooth passage of the first temperature measuring component 54 or the second temperature measuring component 55 through the extension hole 22 to the bottom of the outer casing 2 and insertion into the temperature measuring port 12 during the downward movement of the first temperature measuring component 54 or the second temperature measuring component 55.

[0048] Please see Figure 2 As shown, the inner wall of the perforation of the temperature measuring port 12 is equipped with a sealing element 13 that is adapted to the outer wall size of the first temperature measuring component 54 and the second temperature measuring component 55; this facilitates the use of the sealing element 13 to maintain a good sealing effect and reduce the loss of temperature inside the furnace.

[0049] Please see Figure 2 As shown, the lifting structure 3 includes a gear 31, a first rack 32, and a second rack 33. The gear 31 is horizontally rotatably mounted inside the housing 2. The first rack 32 and the second rack 33 are vertically slidably inserted into the top of the housing 2 and mesh with the gear 31. The first rack 32 and the second rack 33 are symmetrically arranged. A drive component 4, which is fixedly connected to the gear 31, is installed on the outside of the housing 2. The bottom of the first rack 32 is fixedly connected to the first slide block 51, and the bottom of the second rack 33 is fixedly connected to two second slide blocks 52. This allows the first rack 32 and the second rack 33 to move vertically in opposite directions by rotating the gear 31, thereby driving the first slide block 51 and the second slide block 52 to move up and down.

[0050] Please see Figure 1-2 As shown, a raised edge structure 23 is provided on the bottom of the outer periphery of the outer shell 2. Several screws 232 that are threaded to the furnace cover 1 are vertically inserted on the top of the raised edge structure 23. This facilitates the connection between the raised edge structure 23 and the furnace cover 1 by using the screws 232, thereby installing the outer shell 2 onto the top of the furnace cover 1.

[0051] Please see Figure 1-2 As shown, the top of the raised edge structure 23 has several countersunk holes 231 for arranging screws 232, and the top of the furnace cover 1 has a threaded groove 14 for threaded connection with the screws 232; this facilitates the screws 232 to extend through the countersunk holes 231 to the bottom of the raised edge structure 23, and to be threaded into the furnace cover 1 using the threaded groove 14, thereby making the connection operation between the raised edge structure 23 and the furnace cover 1 convenient.

[0052] The working process of the temperature measurement switching device of the aforementioned high-temperature experimental furnace is as follows:

[0053] When using the temperature measurement switching device of the high-temperature experimental furnace, the outer shell 2 needs to be installed on the top of the furnace cover 1 while the furnace cover 1 is connected to the furnace body. When temperature measurement is to be performed, the gear 31 can be rotated by the drive component 4 so that the first rack 32 and the second rack 33 can move in opposite directions in the vertical direction.

[0054] If the first rack 32 moves downward, the second rack 33 moves upward. When the first rack 32 moves downward, the first slide 51 and the first temperature measuring component 54 inside the first slide 51 are both in a downward state. When the first temperature measuring component 54 contacts the guide plate 56, the first temperature measuring component 54 will slide laterally inside the first slide 51 under the combined action of the pushing component 53 and the guide plate 56 as the first rack 32 continues to move downward. The first temperature measuring component 54 gradually moves towards the extension hole 22 until it passes through the extension hole 22 and extends into the temperature measuring port 12.

[0055] Similarly, if the second rack 33 moves downward under the operation of the drive unit 4, the first rack 32 moves upward. The final effect is that the second temperature measuring component 55 extends through the extension hole 22 into the temperature measuring port 12. The temperature measuring component that extends into the temperature measuring port 12 can sense the temperature inside the furnace.

[0056] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A temperature measurement switching device for a high-temperature experimental furnace, installed on a furnace cover (1), wherein a positioning protrusion (11) is provided in the middle of the top surface of the furnace cover (1), and a temperature measuring port (12) communicating with the interior of the experimental furnace is vertically opened on the positioning protrusion (11), characterized in that, include: The outer shell (2) is installed on the top of the furnace cover (1), and the bottom of the outer shell (2) is provided with a limiting hole that corresponds to and communicates with the position of the temperature measuring port (12); The switching structure (5) includes a first slide (51) horizontally disposed inside the housing (2) and a second slide (52) located on both sides of the width direction of the first slide (51), a first temperature measuring component (54) slidably installed at the bottom of the first slide (51), a second temperature measuring component (55) slidably installed at the bottom of the two second slides (52), two guide plates (56) fixedly installed at the bottom of the inner cavity of the housing (2), and a pushing component (53) respectively installed in the first slide (51) and the second slide (52); The lifting structure (3) is used to drive the first slide (51) and the second slide (52) to move in opposite directions in the vertical direction; The two guide plates (56) are respectively installed obliquely below the first temperature measuring component (54) and the second temperature measuring component (55), and the bottom ends of the two guide plates (56) are located on the outer periphery of the limiting hole; The pushing component (53) is adapted to push the first temperature measuring component (54) and the second temperature measuring component (55) to move towards the side closer to the guide plate (56). When the first slide (51) or the second slide (52) moves down, the first temperature measuring component (54) or the second temperature measuring component (55) will move downward against the guide plate (56) until it extends into the temperature measuring port (12) through the limiting hole to perform temperature measurement.

2. The temperature measurement switching device for the high-temperature experimental furnace according to claim 1, characterized in that, The pushing component (53) includes a light rod (531) and an elastic member (532) horizontally installed inside the first slide (51) and the second slide (52). The elastic member (532) is sleeved on the outside of the light rod (531), and one end of the elastic member (532) away from the inner wall of the outer shell (2) is fixedly connected to the first slide (51) or the second slide (52).

3. The temperature measurement switching device for the high-temperature experimental furnace according to claim 2, characterized in that, The top of the first temperature measuring component (54) is equipped with a first slider (511) that is adapted to slide against the inner wall of the first slide (51), and the light rod (531) in the first slide (51) passes horizontally through the first slider (511).

4. The temperature measurement switching device for the high-temperature experimental furnace according to claim 2, characterized in that, The top of the second temperature measuring component (55) is equipped with a second slider (521) that is adapted to slide against the inner wall of the two second slide blocks (52). The second slider (521) is U-shaped, and the light rods (531) in the two second slide blocks (52) pass horizontally through the second slider (521).

5. The temperature measurement switching device for the high-temperature experimental furnace according to claim 1, characterized in that, The limiting hole includes a positioning groove (21) corresponding to the position of the positioning protrusion (11) and an extension hole (22) corresponding to the position of the temperature measuring port (12). The extension hole (22) is located directly above the positioning groove (21) and is connected to the positioning groove (21). The inner diameter of the positioning groove (21) is adapted to the outer wall size of the positioning protrusion (11). The outer wall size of the first temperature measuring component (54) and the second temperature measuring component (55) is smaller than the inner diameter of the extension hole (22).

6. The temperature measurement switching device for the high-temperature experimental furnace according to claim 5, characterized in that, The inner wall of the temperature measuring port (12) is fitted with a sealing element (13) that is adapted to the outer wall size of the first temperature measuring component (54) and the second temperature measuring component (55) to prevent temperature loss caused by gas leakage during the temperature measurement process.

7. The temperature measurement switching device for the high-temperature experimental furnace according to claim 5, characterized in that, The lifting structure (3) includes a gear (31) that is horizontally rotatably installed inside the housing (2) and a first rack (32) and a second rack (33) that are vertically slidably inserted into the top of the housing (2) and mesh with the gear (31). The first rack (32) and the second rack (33) are symmetrically arranged. A drive unit (4) that is fixedly connected to the gear (31) is installed on the outside of the housing (2). The bottom of the first rack (32) is fixedly connected to the first slide (51), and the bottom of the second rack (33) is fixedly connected to the two second slides (52).

8. The temperature measurement switching device for the high-temperature experimental furnace according to claim 1, characterized in that, The outer periphery of the outer shell (2) is provided with a raised edge structure (23), and a number of screws (232) that are threadedly connected to the furnace cover (1) are vertically inserted on the top of the raised edge structure (23).

9. The temperature measurement switching device for the high-temperature experimental furnace according to claim 8, characterized in that, The top of the convex edge structure (23) is provided with a plurality of countersunk holes (231) for arranging the screws (232), and the top of the furnace cover (1) is provided with a threaded groove (14) for threaded connection with the screws (232).

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