A temperature and humidity calibration device with automatic thermometer switching function

Abstract

This invention relates to the field of auxiliary equipment technology for cigar production, and more particularly to a temperature and humidity calibration device with an automatic thermometer switching function. The technical solution includes an external protective component, which comprises a temperature and humidity adjustment chamber. A processing frame is fixedly installed on the top of the temperature and humidity adjustment chamber, and a sealing component is installed on the top of the external protective component. The invention uses a second hollow cuboid frame to move a multi-arc positioning sealing plate towards the sealing door until the multi-arc positioning sealing plate blocks the opening of the sealing door. The operator can then remove the thermometer from the multi-arc positioning sealing plate. Due to the airtight seal between the multi-arc positioning sealing plate and the positioning limiting ring, heat loss inside the processing equipment is further reduced, thus allowing thermometer replacement without disrupting the constant temperature and humidity environment inside the chamber, improving calibration efficiency.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for cigar production, and in particular to a temperature and humidity calibration device with an automatic thermometer switching function. Background Technology

[0002] As a high-end tobacco product, the quality and aging process of cigars are highly dependent on a stable temperature and humidity environment (typical requirements: temperature 20-22℃, relative humidity 65-72%RH). During production, storage, display, and tasting, if temperature and humidity fluctuations exceed the threshold (sudden temperature rise >25℃ or humidity below 60%RH), it can lead to problems such as cracked cigar wrappers, abnormal filler fermentation, and mold growth, directly causing economic losses. Therefore, cigar-related equipment needs to be equipped with high-precision temperature and humidity calibration equipment to monitor and regulate environmental parameters in real time.

[0003] However, existing temperature and humidity calibration chambers typically require opening the chamber when changing thermometers, which disrupts the internal constant temperature and humidity environment and affects calibration accuracy. Furthermore, the temperature uniformity, fluctuation, and humidity control accuracy of existing equipment are insufficient to meet the requirements of high-precision calibration.

[0004] Therefore, this application proposes a temperature and humidity calibration device with an automatic thermometer switching function. Summary of the Invention

[0005] The purpose of this invention is to address the problem in the prior art that existing temperature and humidity calibration chambers require opening the chamber to change the thermometer, which disrupts the internal constant temperature and humidity environment and affects the calibration accuracy. The invention proposes a temperature and humidity calibration device with an automatic thermometer switching function.

[0006] The technical solution of the present invention: a temperature and humidity calibration device with automatic thermometer switching function, including an external protective component, the external protective component including a temperature and humidity adjustment box, a processing frame fixedly installed on the top of the temperature and humidity adjustment box, a sealing component installed on the top of the external protective component, and a thermometer switching component installed between the external protective component and the sealing component. The thermometer switching assembly includes a first hollow cuboid frame fixedly installed on the inner wall of the processing rack. An inner processing chamber is fixedly installed on the side of the first hollow cuboid frame away from the processing rack, and an insulation area is formed between the inner processing chamber and the processing rack. A central positioning cavity frame is fixedly installed on the inner wall of the first hollow cuboid frame. Four sets of positioning slide rail frames are fixedly installed in the inner cavity of the central positioning cavity frame. An electric telescopic assembly is fixedly installed on the top of the positioning slide rail frame. A plugging positioning plate frame is fixedly installed at the bottom of the telescopic end of the electric telescopic assembly. A second hollow cuboid frame is fixedly installed inside the plugging positioning plate frame. A motor assembly is fixedly installed on the top of the central positioning cavity frame. A multi-arc positioning sealing plate is fixedly installed at one end of the output end of the motor assembly that passes through the second hollow cuboid frame.

[0007] Optionally, a protective door is hinged to one side of the processing frame, and the protective door is sealed to the inner processing chamber when it is in contact with the inside of the processing frame.

[0008] Optionally, the temperature and humidity control box has multiple sets of heat dissipation holes on both sides, and an operator is provided on the front side of the external protection component.

[0009] Optionally, the sealing assembly includes a sealing door threaded onto the top of the processing frame, a positioning and limiting ring frame fixedly mounted on the top of the processing frame, and a sealing block installed between the positioning and limiting ring frame and the sealing door.

[0010] Optionally, a limiting ring cavity block is fixedly installed at one end of the motor assembly passing through the second hollow cuboid frame, and the limiting ring cavity block is set in a tight fit with the multi-arc positioning sealing plate.

[0011] Optionally, two sets of positioning frames are fixedly installed on the side of the multi-arc positioning sealing plate away from the electric telescopic assembly, and a bidirectional threaded rod is rotatably installed inside each of the two sets of positioning frames.

[0012] Optionally, both sides of the bidirectional threaded rod are threaded with built-in threaded tubes, and both sides of the built-in threaded tubes are hinged with bidirectional hinged rods. A temperature rack mounting plate is hinged to the side of the bidirectional hinged rods away from the built-in threaded tubes.

[0013] Optionally, a clamping block is fixedly installed on the outer side of the temperature rack mounting plate, and an inclined positioning plate is slidably installed inside the clamping block, with the inclined positioning plate fixedly installed on the side of the positioning frame.

[0014] Optionally, a sealing tube is fixedly installed at the bottom of the multi-arc positioning sealing plate, and a temperature rack protective frame is fixedly installed at the bottom of the temperature rack mounting plate. A magnetic thermometer storage tube is rotatably installed inside the temperature rack protective frame and the sealing tube, and a thermometer is magnetically attracted inside the magnetic thermometer storage tube.

[0015] Optionally, a push-button switch is provided in the thread of the thermometer, an arc-shaped positioning rod is fixedly installed on the inner wall of the sealing tube, an absorbent sponge is provided between the sealing tube and the magnetic thermometer storage tube, and a spring is fixedly installed between the magnetic thermometer storage tube and the temperature frame protective frame.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. The second hollow cuboid frame moves the multi-arc positioning sealing plate toward the sealing door until it blocks the position limit ring frame directly below it. At this point, the multi-arc positioning sealing plate blocks the opening of the sealing door. The staff removes the thermometer from the multi-arc positioning sealing plate. Due to the sealing between the multi-arc positioning sealing plate and the positioning limit ring frame, the heat loss inside the processing equipment is further reduced, thus enabling the replacement of the thermometer without disrupting the constant temperature and humidity environment inside the chamber, thereby improving the calibration efficiency. 2. The inner walls of the processing rack and the inner processing chamber are made of polyurethane foam. Polyurethane foam is suitable for the insulation requirements of high humidity and medium temperature environments, which helps to ensure the stability of the processing environment inside the inner processing chamber. 3. The magnetic thermometer storage tube comes into contact with the absorbent sponge, which helps to wipe away water droplets on the surface of the magnetic thermometer storage tube. During the humidity adjustment process, water mist will be present. Since the thermal conductivity of water and air is different, wiping the water droplets intermittently can prevent the water droplets from affecting the thermometer's detection and ensure the accuracy of the detection. Attached Figure Description

[0017] Figure 1 Provide a structural schematic diagram of the temperature and humidity calibration equipment; Figure 2 This is a schematic diagram of the structure of a sealed door; Figure 3 This is a schematic diagram of the central positioning cavity frame; Figure 4 This is a schematic diagram of the structure of the multi-arc positioning and sealing plate of the present invention; Figure 5 This is a schematic diagram of the structure of the insertion positioning plate frame of the present invention; Figure 6 This is a schematic diagram of the positioning frame of the present invention; Figure 7 This is a schematic diagram of the bidirectional threaded rod of the present invention; Figure 8 This is a schematic diagram of the positioning and limiting ring frame of the present invention; Figure 9 for Figure 8 Enlarged view of region A in the middle; Figure 10 for Figure 8 Enlarged view of region B in the middle; Figure 11 This is a schematic diagram of the structure of the magnetic thermometer storage tube of the present invention.

[0018] Reference numerals: 1. External protective assembly; 101. Temperature and humidity control chamber; 102. Protective door; 103. Processing rack; 104. Heat dissipation hole; 105. Internal processing chamber; 2. Operator; 3. Sealing assembly; 301. Sealing door; 302. Positioning and limiting ring frame; 303. Sealing block; 4. Thermometer switching assembly; 401. First hollow cuboid frame; 402. Central positioning cavity frame; 403. Positioning slide rail frame; 404. Electric telescopic assembly; 405. Motor assembly; 406. Insertion positioning plate Frame; 407. Second hollow cuboid frame; 408. Limiting ring cavity block; 409. Multi-arc positioning sealing plate; 410. Temperature rack mounting plate; 411. Temperature rack protective frame; 412. Positioning frame; 413. Internal threaded tube; 414. Two-way threaded rod; 415. Two-way hinged rod; 416. Inclined positioning plate; 417. Clamping block; 418. Magnetic thermometer storage tube; 419. Spring; 420. Arc-shaped positioning rod; 421. Press switch; 422. Thermometer; 423. Sealing tube. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] 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.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] like Figure 1 and Figure 2 As shown, the present invention proposes a temperature and humidity calibration device with automatic thermometer switching function, including an external protective component 1, the external protective component 1 including a temperature and humidity adjustment box 101, a processing frame 103 fixedly installed on the top of the temperature and humidity adjustment box 101, a sealing component 3 installed on the top of the external protective component 1, and a thermometer switching component 4 installed between the external protective component 1 and the sealing component 3. The thermometer switching assembly 4 includes a first hollow cuboid frame 401 fixedly installed on the inner wall of the processing rack 103. An inner processing chamber 105 is fixedly installed on the side of the first hollow cuboid frame 401 away from the processing rack 103. An insulation area is formed between the inner processing chamber 105 and the processing rack 103. In this application, the processing rack 103 adopts a double-layer heat insulation design. A heating assembly is provided inside the processing rack 103 to provide heat to the cavity between the processing rack 103 and the inner processing chamber 105. The processing rack 103 is the outer layer, which is used as a protective layer. Both the inner walls of the processing rack 103 and the inner processing chamber 105 are made of polyurethane foam material. Polyurethane foam is suitable for the heat insulation requirements of high humidity and medium temperature environment, which helps to ensure the stability of the internal processing environment of the inner processing chamber 105.

[0025] like Figure 1 and Figure 3 As shown, a protective door 102 is hinged to one side of the processing rack 103. When the protective door 102 is in contact with the inside of the processing rack 103, it is sealed to the inner processing chamber 105. Multiple sets of heat dissipation holes 104 are opened on both sides of the temperature and humidity adjustment box 101. An operator 2 is provided on the front side of the external protective component 1. When the protective door 102 is in contact with the inside of the processing rack 103, a sealing block is placed on the side of the protective door 102 facing the inside of the processing rack 103 at the opening of the inner processing chamber 105, so that the inner processing chamber 105 forms a sealed cavity at this time.

[0026] like Figure 2As shown, the sealing assembly 3 includes a sealing door 301 threadedly installed on the top of the processing frame 103. A positioning and limiting ring frame 302 is fixedly installed on the top of the processing frame 103. A sealing block 303 is installed between the positioning and limiting ring frame 302 and the sealing door 301. When the processing frame 103 is in a sealed state, the operator threadedly installs the sealing door 301 along the inner wall thread of the processing frame 103. At the same time, the sealing block 303 is installed between the sealing door 301 and the positioning and limiting ring frame 302. Under the compression of the inner wall of the sealing door 301 and the outer wall of the positioning and limiting ring frame 302, a sealed environment is formed between the sealing door 301 and the positioning and limiting ring frame 302, which helps to reduce the loss of heat inside the equipment.

[0027] like Figures 3-11As shown, a central positioning cavity frame 402 is fixedly installed on the inner wall of the first hollow cuboid frame 401. Four sets of positioning slide rails 403 are fixedly installed inside the central positioning cavity frame 402. An electric telescopic assembly 404 is fixedly installed on the top of the positioning slide rails 403. An insertion positioning plate frame 406 is fixedly installed at the bottom of the telescopic end of the electric telescopic assembly 404. A second hollow cuboid frame 407 is fixedly installed inside the insertion positioning plate frame 406. A motor assembly 405 is fixedly installed on the top of the central positioning cavity frame 402. A multi-arc positioning sealing plate is fixedly installed at one end of the output end of the motor assembly 405 that passes through the second hollow cuboid frame 407. 409. A limiting ring block 408 is fixedly installed at one end of the motor assembly 405 passing through the second hollow cuboid frame 407. The limiting ring block 408 and the multi-arc positioning sealing plate 409 are in a tight fit. When the thermometer needs to be replaced or inspected, the motor assembly 405 drives the multi-arc positioning sealing plate 409 to rotate along the second hollow cuboid frame 407. During this process, since the sealing door 301 and the processing rack 103 form a sealed state, and the protective door 102 is also closed, the multi-arc positioning sealing plate 409 will not cause heat loss inside the equipment during rotation. At the same time, the multi-arc positioning... Thermometers can be installed on both the front and rear sides of the sealing plate 409. When one side of the multi-arc positioning sealing plate 409 is moved to the other side, another thermometer can be placed in the machining environment inside the inner machining chamber 105. Since the contact surfaces between the central positioning frame 402 and the multi-arc positioning sealing plate 409 are both arc-shaped, the multi-arc positioning sealing plate 409 can be effectively rotated and repositioned by the guidance of the arc-shaped surface when it rotates along the central positioning frame 402. If the thermometer needs to be replaced, the electric telescopic component 404 drives the insertion positioning plate frame 406 along the internal rail of the positioning slide rail frame 403. As the tube moves outward, the second hollow cuboid frame 407 moves the multi-arc positioning sealing plate 409 toward the sealing door 301 until it blocks the opening of the sealing door 301. At this point, the multi-arc positioning sealing plate 409 blocks the opening of the sealing door 301. The operator then removes the sealing door 301 and the thermometer on the multi-arc positioning sealing plate 409. Due to the sealing between the multi-arc positioning sealing plate 409 and the positioning limiting ring 302, heat loss inside the processing equipment is further reduced, thus allowing the thermometer to be replaced without disrupting the constant temperature and humidity environment inside the chamber, thereby improving calibration efficiency.

[0028] like Figures 6-11As shown, two sets of positioning frames 412 are fixedly installed on the side of the multi-arc positioning sealing plate 409 away from the electric telescopic assembly 404. Both sets of positioning frames 412 have a bidirectional threaded rod 414 rotatably installed inside. An internal threaded tube 413 is threadedly installed on both sides of the bidirectional threaded rod 414. A bidirectional hinge rod 415 is hinged to both sides of the internal threaded tube 413. A temperature rack mounting plate 410 is hinged to the side of the bidirectional hinge rod 415 away from the internal threaded tube 413. A clamping block 417 is fixedly installed on the outside of the temperature rack mounting plate 410. An inclined positioning plate 416 is slidably installed inside the clamping block 417. The inclined positioning plate 416 is fixedly installed on the side of the positioning frame 412. A sealing tube 423 is fixedly installed at the bottom of the multi-arc positioning sealing plate 409. A temperature rack protective frame 411 is fixedly installed at the bottom of the temperature rack mounting plate 410. A magnetic thermometer storage tube 418 is rotatably installed inside the temperature rack protective frame 411 and the sealing tube 423. A thermometer 422 is magnetically attached inside the magnetic thermometer storage tube 418. A push-button switch 421 is provided in the thread of the thermometer 422. An arc-shaped positioning rod 420 is fixedly installed on the inner wall of the sealing tube 423. An absorbent sponge is placed between the sealing tube 423 and the magnetic thermometer storage tube 418. A spring 419 is fixedly installed between the magnetic thermometer storage tube 418 and the temperature rack protective frame 411. When the central positioning cavity frame 402 is working as a temperature detection tool, a forward and reverse motor fixedly installed with the positioning frame 412 drives a bidirectional screw. The threaded rod 414 rotates along the positioning frame 412. The bidirectional threaded rod 414, through the opposite characteristics of its threads, drives two sets of internally threaded tubes 413 to move in opposite directions along the bidirectional threaded rod 414. If the thermometer needs to be replaced or normal testing is required, the internally threaded tubes 413 slide towards the center of the bidirectional threaded rod 414. At this time, the bidirectional hinge rod 415 also moves towards the center. Because the clamping blocks 417 on both sides of the temperature frame mounting plate 410 are limited by the inclined positioning plate 416, the temperature frame mounting plate 410 can only continue to move vertically up and down along the inclined positioning plate 416. When the temperature frame mounting plate 410 moves towards the multi-arc positioning sealing plate 409, the multi-arc positioning sealing plate 409 remains stationary initially, and the sealing tubes 4... The 23 and the magnetic thermometer storage tube 418 form a mutual thrust. During the process of the magnetic thermometer storage tube 418 being stored in the sealing tube 423, the arc-shaped positioning rod 420 slides on the external thread of the magnetic thermometer storage tube 418, causing the magnetic thermometer storage tube 418 to rotate synchronously under the elastic limit of the spring 419. This brings the magnetic thermometer storage tube 418 into contact with the absorbent sponge, which helps to wipe away water droplets on its surface. During humidity adjustment, water mist may be present. Since water and air have different thermal conductivity, if water droplets adhere to the thermometer's periphery, it can easily affect the accuracy of the thermometer's temperature measurement of the internal processing chamber 105. Therefore, intermittent wiping of the water droplets...This avoids water droplets affecting the thermometer's readings, ensuring accurate measurement. Meanwhile, when the thermometer needs to be replaced, since the thermometer 422 is housed inside the sealing tube 423, the thermometer 422 will not collide with the central positioning cavity frame 402 and be damaged when the temperature frame mounting plate 410 rotates, thus extending the service life of the thermometer.

[0029] Furthermore, when the multi-arc positioning sealing plate 409 rotates to face the sealing door 301, the bidirectional threaded rod 414 continues to rotate, causing the push switch 421 inside the thread of the magnetic thermometer storage tube 418 to be pressed by the arc positioning rod 420, thereby loosening the thermometer 422 and the magnetic thermometer storage tube 418, making it easier for staff to replace the thermometer 422 from the sealing door 301.

[0030] In this embodiment, it is explained that the temperature and humidity control module adopts a hierarchical PID control strategy, that is, temperature and humidity are controlled independently, while considering the coupling effect between the two. The temperature and humidity adjustment box 101 is equipped with a temperature and humidity control system that adopts a PID control algorithm. That is, a PT1000 platinum resistance thermometer is used inside the inner processing chamber 105 to measure the overall temperature, while NTC thermometers are arranged at the four corners of the inner processing chamber 105 to monitor the local temperature gradient in real time. The operator 2 uses Kalman filtering to fuse the data of the main and auxiliary sensors, calculates the overall temperature and local temperature, eliminates single-point errors, and outputs a more reliable comprehensive temperature value, achieving a temperature uniformity of ≤0.2℃ and a fluctuation and change rate of ≤0.1℃. The humidity control adopts ultrasonic humidification technology to form a precise closed loop of ultrasonic humidification. Since cigars need to be stored in a constant humidity environment of 65%RH-72%RH, excessive humidity fluctuations will cause the wrapper to dry and crack or mold. The system uses ultrasonic humidification to achieve a uniformity of ≤0.5%RH and a fluctuation of ≤0.3%RH, resulting in a humidity uniformity of ≤0.5%RH and a fluctuation and change rate of ≤0.3MRH.

[0031] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A temperature and humidity calibration device with an automatic thermometer switching function, comprising an external protective component (1), wherein the external protective component (1) includes a temperature and humidity adjustment chamber (101), and a processing frame (103) is fixedly installed on the top of the temperature and humidity adjustment chamber (101), characterized in that: A sealing component (3) is installed on the top of the external protective component (1), and a thermometer switching component (4) is installed between the external protective component (1) and the sealing component (3). The thermometer switching assembly (4) includes a first hollow cuboid frame (401) fixedly installed on the inner wall of the processing rack (103). An inner processing chamber (105) is fixedly installed on the side of the first hollow cuboid frame (401) away from the processing rack (103). A heat preservation area is formed between the inner processing chamber (105) and the processing rack (103). A central positioning cavity frame (402) is fixedly installed on the inner wall of the first hollow cuboid frame (401). Four sets of positioning slide rail frames (403) are fixedly installed inside the central positioning cavity frame (402). An electric telescopic assembly (404) is fixedly installed on the top of the positioning slide rail frame (403). A plug-in positioning plate frame (406) is fixedly installed at the bottom of the telescopic end of the electric telescopic assembly (404). A second hollow cuboid frame (407) is fixedly installed inside the plug-in positioning plate frame (406). A motor assembly (405) is fixedly installed on the top of the central positioning cavity frame (402). The output end of (405) passes through one end of the second hollow cuboid frame (407) and is fixedly installed with a multi-arc positioning sealing plate (409). The motor assembly (405) drives the multi-arc positioning sealing plate (409) to rotate along the second hollow cuboid frame (407). The front and rear sides of the multi-arc positioning sealing plate (409) are equipped with corresponding thermometers. When the electric telescopic assembly (404) drives the insertion positioning plate frame (406) to move outward along the internal track of the positioning slide rail frame (403), the second hollow cuboid frame (407) drives the multi-arc positioning sealing plate (409) to move towards the position of the sealing assembly (3).

2. The temperature and humidity calibration device with automatic thermometer switching function according to claim 1, characterized in that, A protective door (102) is hinged to one side of the processing rack (103). When the protective door (102) is in contact with the inside of the processing rack (103), it is sealed to the inner processing chamber (105).

3. The temperature and humidity calibration device with automatic thermometer switching function according to claim 2, characterized in that, The temperature and humidity control box (101) has multiple sets of heat dissipation holes (104) on both sides, and the external protective component (1) has an operator (2) on the front side.

4. A temperature and humidity calibration device with automatic thermometer switching function according to claim 1, characterized in that, The sealing assembly (3) includes a sealing door (301) threaded onto the top of the processing frame (103), a positioning and limiting ring frame (302) fixedly installed on the top of the processing frame (103), and a sealing block (303) installed between the positioning and limiting ring frame (302) and the sealing door (301).

5. A temperature and humidity calibration device with automatic thermometer switching function according to claim 4, characterized in that, The motor assembly (405) is fixedly installed with a limiting ring cavity block (408) at one end through the second hollow cuboid frame (407), and the limiting ring cavity block (408) is set in a tight fit with the multi-arc positioning sealing plate (409).

6. A temperature and humidity calibration device with automatic thermometer switching function according to claim 5, characterized in that, Two sets of positioning frames (412) are fixedly installed on the side of the multi-arc positioning sealing plate (409) away from the electric telescopic assembly (404), and a bidirectional threaded rod (414) is rotatably installed inside the two sets of positioning frames (412).

7. A temperature and humidity calibration device with automatic thermometer switching function according to claim 6, characterized in that, Both sides of the bidirectional threaded rod (414) are threaded with built-in threaded tubes (413), and both sides of the built-in threaded tubes (413) are hinged with bidirectional hinged rods (415). A temperature rack mounting plate (410) is hinged to the side of the bidirectional hinged rods (415) away from the built-in threaded tubes (413).

8. A temperature and humidity calibration device with automatic thermometer switching function according to claim 7, characterized in that, A clamping block (417) is fixedly installed on the outside of the temperature rack mounting plate (410), and an inclined positioning plate (416) is slidably installed inside the clamping block (417). The inclined positioning plate (416) is fixedly installed on the side of the positioning frame (412).

9. A temperature and humidity calibration device with automatic thermometer switching function according to claim 8, characterized in that, A sealing tube (423) is fixedly installed at the bottom of the multi-arc positioning sealing plate (409), and a temperature rack protective frame (411) is fixedly installed at the bottom of the temperature rack mounting plate (410). A magnetic thermometer storage tube (418) is rotatably installed inside the temperature rack protective frame (411) and the sealing tube (423), and a thermometer (422) is magnetically attracted inside the magnetic thermometer storage tube (418).

10. A temperature and humidity calibration device with automatic thermometer switching function according to claim 9, characterized in that, A push-button switch (421) is provided in the thread of the thermometer (422), an arc-shaped positioning rod (420) is fixedly installed on the inner wall of the sealing tube (423), an absorbent sponge is provided between the sealing tube (423) and the magnetic thermometer storage tube (418), and a spring (419) is fixedly installed between the magnetic thermometer storage tube (418) and the temperature rack protective frame (411).

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