Insertion depth adjusting and fixing device for thermal resistor

Abstract

The invention relates to the technical field of thermal resistor installation, and particularly discloses a thermal resistor insertion depth adjusting and fixing device which comprises a shell, a connecting pipe is fixedly connected to the outer surface of the lower end of the shell, a guide pipe is fixedly connected to the outer surface of the lower end of the connecting pipe, and an adjusting assembly is arranged on the outer side of the connecting pipe. The adjusting assembly comprises a spiral plate in threaded connection with the upper side of the outer surface of the connecting pipe, and a traction groove is formed in the outer surface of the upper end of the spiral plate in an embedded mode. By arranging the adjusting assembly, the moving distance of the spiral plate can be visually measured by observing the position, corresponding to the scale marks on the surface of the ruler, of the lower edge of the shell, the adjusting complexity of the thermal resistor can be reduced, and meanwhile the installing and adjusting precision of the thermal resistor can be improved to a certain degree; the clamping plates are clamped on the outer side of the guide pipe and can well clamp and limit the connecting pipe, so that the position of the connecting pipe can be kept stable, and the mounting stability of the thermal resistor can be kept.

Description

Technical Field

[0001] This invention relates to the field of resistance temperature detector (RTD) mounting technology, and in particular to an insertion depth adjustment and fixing device for an RTD. Background Technology

[0002] Resistance temperature detectors (RTDs) are the most commonly used temperature detectors in the medium and low temperature range. They measure temperature based on the characteristic that the resistance of a metallic conductor increases with temperature. They have advantages such as high measurement accuracy, good stability, reliable performance, and high sensitivity, and are widely used in industrial temperature measurement, scientific research experiments, and food processing industries.

[0003] When installing a resistance temperature detector (RTD), auxiliary installation equipment is required to fix the RTD. For example, Chinese patent CN221260135U discloses a quick installation structure for RTDs. This device has an installation structure that allows the RTD body to be inserted into the required position. Then, the fixing ring is rotated so that the clamping plate tightly clamps the outer wall of the RTD body. When different measurement depths need to be adjusted, only the movable ring and the fixing ring need to be adjusted, which can effectively improve the ease of installation of the RTD.

[0004] While existing installation structures can enable rapid installation of RTDs, in practical applications, the insertion depth of the RTD needs to be adjusted according to changes in the liquid level. When adjusting the insertion depth, operators need to use tools such as tape measures to measure the insertion depth, which not only increases the cumbersomeness of the RTD insertion depth adjustment process, but also makes it impossible to visually detect the insertion depth of the RTD during operation. Summary of the Invention

[0005] The purpose of this invention is to provide a device for adjusting and fixing the insertion depth of a thermal resistor, which allows for intuitive measurement of the movement distance of the spiral plate by observing the position of the scale line on the lower edge of the housing corresponding to the scale surface, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an insertion depth adjustment and fixing device for a thermal resistor, comprising a housing, a connecting pipe fixedly connected to the lower outer surface of the housing, a conduit fixedly connected to the lower outer surface of the connecting pipe, an adjustment component disposed on the outside of the connecting pipe, the adjustment component comprising a spiral plate threadedly connected to the upper side of the outer surface of the connecting pipe, a traction groove embedded in the upper outer surface of the spiral plate, a receiving groove disposed on the lower side of the inner surface of the housing, a scale slidably connected to the inner side of the receiving groove, the lower end of the scale being located inside the traction groove and slidingly contacting the inner surface of the traction groove.

[0007] Preferably, a displacement assembly is provided on the lower side of the spiral plate. The displacement assembly includes a top sleeve that is rotatably connected to the lower end of the spiral plate. A guide groove is provided through the outer surface of the top sleeve. A slide rod is slidably connected to the inner side of the guide groove. A fixed seat is fixedly connected to the outer surface of the slide rod. The fixed seat is annular in shape. A compression sleeve is fixedly connected to the lower outer surface of the fixed seat.

[0008] Preferably, the lower side of the outer surface of the extrusion sleeve is conical, and a groove is fixedly embedded in the inner surface of the extrusion sleeve. A slider is slidably connected to the inner side of the groove. A movable seat is fixedly connected to the outer surface of the slider. The upper outer surface of the movable seat is in contact with the lower end of the top sleeve. The movable seat is in sliding contact with the inner surface of the extrusion sleeve. A clamping plate is fixedly connected to the outer surface of the movable seat away from the slider. The outer surface of the clamping plate is in contact with the connecting pipe.

[0009] Preferably, the traction groove is a T-shaped structure and is distributed in an arc shape, the outer surface of the clamping plate is serrated and made of wear-resistant material, the number of the sliding groove, slider, moving seat and clamping plate are several groups and distributed in a ring array, the upper outer surface of the slider is fixedly connected with an elastic band, the upper end of the elastic band is fixedly connected to the upper side of the inner surface of the sliding groove, and the inner side of the conduit is used to place the thermal resistor.

[0010] Preferably, a buffer assembly is provided on the lower side of the fixed base. The buffer assembly includes a placement groove one formed on the lower outer surface of the fixed base. A bladder one is fixedly connected to the upper surface of the inner surface of the placement groove one. A movable frame is slidably connected to the inner surface of the placement groove one. A placement groove two is formed on the upper outer surface of the movable frame. The lower outer surface of the bladder one is fixedly connected to the placement groove two.

[0011] Preferably, a limiting plate is fixedly connected to the lower outer surface of the movable frame. The limiting plate is circular in shape, and a mounting plate is fixedly connected to the outer surface of the limiting plate. A mounting hole is opened through the upper outer surface of the mounting plate. The number of mounting holes is several groups and they are distributed in a circular array. A spring is fixedly connected to one inner surface of the bladder.

[0012] Preferably, an expansion assembly is provided on the inner side of the slide rod. The expansion assembly includes a slot embedded in the outer surface of the slide rod. A second bladder is fixedly connected to the inner surface of the slot. An expansion plate is slidably connected to the inner surface of the slot. The outer surface of the expansion plate is arc-shaped. The outer surface of the second bladder is fixedly connected to the expansion plate. The outer surface of the second bladder is annular.

[0013] Preferably, the fixed base has an embedded air guide groove, which is connected to the interior of the first and second bladders. The number of slots and expansion plates are several sets and arranged in a ring array. The outer surface of the expansion plate slides in contact with the inner wall of the guide groove. A baffle is fixedly connected to the side of the slide rod away from the fixed base. The number of guide grooves and slide rods are two sets and arranged symmetrically.

[0014] Preferably, a clamping assembly is provided on the inner side of the extrusion sleeve. The clamping assembly includes a limiting block fixedly connected to the lower side of the inner surface of the extrusion sleeve. The limiting block is annular. A flap is fixedly connected to the upper side of the inner surface of the extrusion sleeve. A top plate is fixedly connected to the lower outer surface of the moving seat. The top plate is annular and located above the flap.

[0015] Preferably, a sealing plate is fixedly connected to the upper outer surface of the limiting block, and pressure cracks are opened on the upper side of the outer surface of the sealing plate. The number of pressure cracks is several groups and they are distributed in a ring array. The upper end of the flap plate is in contact with the outer surface of the sealing plate. Both the flap plate and the sealing plate are made of elastic material.

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

[0017] 1. This solution, by setting up an adjustment component, allows for intuitive measurement of the movement distance of the spiral plate by observing the position of the scale line on the lower edge of the housing corresponding to the scale surface. This not only reduces the complexity of adjusting the thermal resistor, but also improves the installation and adjustment accuracy of the thermal resistor to a certain extent. The clamping plate, held on the outside of the conduit, can effectively clamp and limit the connecting pipe, thereby keeping the position of the connecting pipe stable and helping to maintain the installation stability of the thermal resistor.

[0018] 2. This solution uses a buffer component to buffer the vibration shock wave through the elastic deformation of the spring, thereby reducing the transmission of the shock wave to the fixed base to a certain extent. The deformation of the first bladder further buffers the vibration shock wave, thus keeping the fixed base stable. This not only reduces the impact of vibration on the accuracy of the thermal resistance test, but also effectively reduces the probability of the thermal resistance loosening during installation, thereby effectively improving the accuracy of thermal resistance measurement.

[0019] 3. This solution uses an expansion component. When equipment vibration is transmitted to the thermal resistor, the expansion plate will contact the inner wall of the guide groove on the surface of the top sleeve. The expansion of the second bladder can effectively increase the friction between the expansion plate and the guide groove, thereby keeping the top sleeve and the shell stable and effectively reducing the impact of vibration on the accuracy of thermal resistor detection. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a top view of the overall structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0024] Figure 4 For the present invention Figure 2 Sectional view along line AA;

[0025] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0026] Figure 6 For the present invention Figure 4 Enlarged view of point C in the middle;

[0027] Figure 7 For the present invention Figure 4 Enlarged view of point D;

[0028] Figure 8 For the present invention Figure 6 Enlarged diagram of point E in the middle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 11. Shell; 12. Connecting pipe; 13. Conduit; 14. Mounting plate; 15. Top sleeve; 16. Compression sleeve; 17. Mounting hole; 18. Guide groove; 19. Spiral plate; 20. Traction groove; 21. Scale; 22. Storage groove; 23. Slide rod; 24. Baffle; 25. Fixed seat; 26. Placement groove one; 27. Limiting plate; 28. Movable frame; 29. ​​Placement groove two; 30. Spring; 31. Air guide groove; 32. Bag body one; 33. Slide groove; 34. Slider; 35. Elastic band; 36. Moving seat; 37. Clamping plate; 38. Top plate; 39. Flip plate; 40. Sealing plate; 41. Pressure crack; 42. Limiting block; 43. Slot; 44. Bag body two; 45. Expansion plate. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1 to 8 This invention provides a technical solution:

[0033] An insertion depth adjustment and fixing device for a thermal resistor includes a housing 11. A connecting pipe 12 is fixedly connected to the lower outer surface of the housing 11. A conduit 13 is fixedly connected to the lower outer surface of the connecting pipe 12. An adjustment component is provided on the outside of the connecting pipe 12. The adjustment component includes a spiral plate 19 threadedly connected to the upper side of the outer surface of the connecting pipe 12. A traction groove 20 is embedded in the upper outer surface of the spiral plate 19. A receiving groove 22 is provided on the lower side of the inner surface of the housing 11. A scale 21 is slidably connected to the inner side of the receiving groove 22. The lower end of the scale 21 is located inside the traction groove 20 and slides in contact with the inner surface of the traction groove 20.

[0034] A displacement assembly is provided on the lower side of the spiral plate 19. The displacement assembly includes a top sleeve 15 that is rotatably connected to the lower end of the spiral plate 19. A guide groove 18 is provided through the outer surface of the top sleeve 15. A slide rod 23 is slidably connected to the inner side of the guide groove 18. A fixing seat 25 is fixedly connected to the outer surface of the slide rod 23. The fixing seat 25 is annular. A compression sleeve 16 is fixedly connected to the lower outer surface of the fixing seat 25.

[0035] The lower side of the outer surface of the extrusion sleeve 16 is conical. A sliding groove 33 is fixedly embedded in the inner surface of the extrusion sleeve 16. A slider 34 is slidably connected to the inner side of the sliding groove 33. A movable seat 36 is fixedly connected to the outer surface of the slider 34. The upper outer surface of the movable seat 36 is in contact with the lower end of the top sleeve 15. The movable seat 36 is in sliding contact with the inner surface of the extrusion sleeve 16. A clamping plate 37 is fixedly connected to the outer surface of the movable seat 36 away from the slider 34. The outer surface of the clamping plate 37 is in contact with the connecting pipe 12.

[0036] The traction groove 20 has a T-shaped structure and is distributed in an arc shape. The outer surface of the clamping plate 37 is serrated and made of wear-resistant material. The number of the sliding groove 33, the slider 34, the moving seat 36 and the clamping plate 37 are all in several groups and are distributed in a ring array. An elastic band 35 is fixedly connected to the upper outer surface of the slider 34. The upper end of the elastic band 35 is fixedly connected to the upper side of the inner surface of the sliding groove 33. The inner side of the conduit 13 is used to place the thermal resistor.

[0037] By adopting the above technical solution, the installation depth of the thermal resistor needs to be adjusted according to the installation location and the type of heat medium during installation. For this purpose, an adjustment component and a displacement component are provided. During operation, the compression sleeve 16 is first moved to a suitable position on the outer surface of the connecting pipe 12, and the fixing seat 25 is placed outside the device to be measured. The fixing seat 25 provides fixed support for the sliding rod 23. The sliding rod 23, in conjunction with the guide groove 18, can provide a certain sliding guide for the top sleeve 15, allowing the top sleeve 15 to slide linearly in the vertical direction. Then, after adjusting the distance between the housing 11 and the fixing seat 25 to an appropriate range, the operator rotates the spiral plate 19. The spiral plate 19 passes through... The spiral plate 19 is threadedly connected to the connecting rod and moves along the axis of the connecting pipe 12 during rotation. During its movement, the spiral plate 19 pulls the scale 21 through the traction groove 20, thereby pulling the scale 21 out from the inside of the storage groove 22. The lower ends of the traction groove 20 and the scale 21 are both T-shaped. During the rotation of the spiral plate 19, the lower end of the scale 21 will slide in contact with the inside of the traction groove 20. By observing the position of the scale line on the surface of the scale 21 corresponding to the lower edge of the housing 11, the movement distance of the spiral plate 19 can be directly measured. This not only reduces the complexity of the thermal resistance adjustment process, but also improves the installation and adjustment accuracy of the thermal resistance to a certain extent.

[0038] During its movement, the spiral plate 19 drives the top sleeve 15 downwards. As the top sleeve 15 moves downwards, it pushes the movable seat 36. The movable seat 36, in turn, drives the slider 34 to move synchronously. The linear movement of the slider 34 within the groove 33 provides guidance for the movable seat 36. As the slider 34 moves downwards, it pulls the elastic band 35. Because the inner wall of the extrusion sleeve 16 is conical, the movable seat 36 gradually moves towards the guide tube 13 as it moves downwards along the inner wall of the extrusion sleeve 16. The movable seat 36 drives the clamping plate 37 to move synchronously, bringing the clamping plate 37 into contact with the outer surface of the guide tube 13. Through several sets of annularly distributed clamping plates 3... The clamp 7, held on the outside of the conduit 13, provides good clamping and limiting for the connecting tube 12, thus stabilizing its position. The serrated surface of the clamp 37 effectively increases the friction with the surface of the connecting tube 12, further enhancing the clamping effect. When adjusting the insertion depth of the thermal resistor again, the operator rotates the spiral plate 19 in the opposite direction, causing the spiral plate 19 to move the top sleeve 15 upward. At this time, the slider 34 moves upward along the inside of the groove 33 under the elastic force of the elastic band 35. The slider 34, through the moving seat 36, causes the clamp 37 to disengage from the surface of the connecting tube 12, thereby releasing the clamping and fixing of the connecting tube 12.

[0039] Specifically, such as Figure 4 and Figure 6As shown, a buffer assembly is provided on the lower side of the fixed base 25. The buffer assembly includes a placement groove 26 formed on the lower outer surface of the fixed base 25. A bladder 32 is fixedly connected to the upper end of the inner surface of the placement groove 26. A movable frame 28 is slidably connected to the inner surface of the placement groove 26. A placement groove 29 is formed on the upper outer surface of the movable frame 28. The lower outer surface of the bladder 32 is fixedly connected to the placement groove 29.

[0040] A limiting plate 27 is fixedly connected to the lower outer surface of the movable frame 28. The limiting plate 27 is in the shape of a ring. An mounting plate 14 is fixedly connected to the outer surface of the limiting plate 27. An mounting hole 17 is opened through the upper outer surface of the mounting plate 14. The number of mounting holes 17 is several groups and they are arranged in a ring array. A spring 30 is fixedly connected to the inner surface of the bladder 32.

[0041] By adopting the above technical solution, a buffer component is set up during the operation of the RTD to prevent equipment vibration from affecting the detection accuracy. During installation, the mounting plate 14 is fixedly installed on the outside of the equipment through the mounting hole 17. The mounting plate 14 is fixedly supported by the movable frame 28 through the limiting plate 27. The movable frame 28 is slidably supported by the fixed seat 25 through the placement slot 29 and the placement slot 26. When equipment vibration is transmitted to the mounting plate 14, the vibration shock wave will be transmitted sequentially through the limiting plate 27 and the movable frame 28 to the spring 30. The spring 30's elasticity... The variable can buffer the vibration shock wave, thereby reducing the transmission of the shock wave to the fixed seat 25 to a certain extent. When the movable frame 28 moves relative to the fixed seat 25, the movable frame 28 cooperates with the fixed seat 25 to squeeze the bladder 32. The elastic deformation of the bladder 32 can further buffer the vibration shock wave, thereby keeping the fixed seat 25 stable. This not only reduces the impact of vibration on the accuracy of the thermal resistance detection, but also effectively reduces the probability of the thermal resistance becoming loose during installation, thus effectively improving the accuracy of thermal resistance measurement.

[0042] Specifically, such as Figure 4 , Figure 6 and Figure 8 As shown, an expansion assembly is provided on the inner side of the slide rod 23. The expansion assembly includes a slot 43 embedded in the outer surface of the slide rod 23. A second bladder 44 is fixedly connected to the inner surface of the slot 43. An expansion plate 45 is slidably connected to the inner surface of the slot 43. The outer surface of the expansion plate 45 is arc-shaped. The outer surface of the second bladder 44 is fixedly connected to the expansion plate 45. The outer surface of the second bladder 44 is annular.

[0043] An air guide groove 31 is embedded in the inner side of the fixed base 25. The air guide groove 31 is distributed and connected to the interior of the first bag body 32 and the second bag body 44. The number of slots 43 and expansion plates 45 are several sets and arranged in a ring array. The outer surface of the expansion plate 45 slides in contact with the inner wall of the guide groove 18. A baffle 24 is fixedly connected to the side of the slide rod 23 away from the fixed base 25. The number of guide grooves 18 and slide rods 23 are two sets and arranged symmetrically.

[0044] By adopting the above technical solution, when the equipment vibrates, an expansion component is set up to further improve the installation stability of the thermal resistor. When the fixed seat 25 and the movable frame 28 squeeze the first bladder 32, the gas inside the first bladder 32 will enter the second bladder 44 through the air guide groove 31. The slide rod 23 fixes and supports the second bladder 44 through the slot 43. After the gas enters the second bladder 44, it will inflate and expand. At this time, the second bladder 44 will push the expansion plate 45 to move inside the slot 43. As the expansion plate 45 comes into contact with the inner wall of the guide groove 18 on the surface of the top sleeve 15, the expansion of the second bladder 44 can effectively increase the friction between the expansion plate 45 and the guide groove 18, thereby keeping the top sleeve 15 and the shell 11 stable and effectively reducing the impact of vibration on the detection accuracy of the thermal resistor.

[0045] Specifically, such as Figure 4 and Figure 7 As shown, a clamping assembly is provided on the inner side of the extrusion sleeve 16. The clamping assembly includes a limiting block 42 fixedly connected to the lower side of the inner surface of the extrusion sleeve 16. The limiting block 42 is in the shape of a ring. A flap 39 is fixedly connected to the upper side of the inner surface of the extrusion sleeve 16. A top plate 38 is fixedly connected to the outer surface of the lower end of the movable seat 36. The top plate 38 is in the shape of a ring and is located above the flap 39.

[0046] A sealing plate 40 is fixedly connected to the upper outer surface of the limiting block 42. A pressure crack 41 is opened on the upper side of the outer surface of the sealing plate 40. The number of pressure cracks 41 is several groups and they are distributed in a ring array. The upper end of the flap 39 is in contact with the outer surface of the sealing plate 40. Both the flap 39 and the sealing plate 40 are made of elastic material.

[0047] By adopting the above technical solution, when the moving seat 36 moves downward to clamp and fix the connecting pipe 12, the moving seat 36 will drive the top plate 38 on its lower side to move synchronously. After the top plate 38 contacts the upper surface of the flip plate 39, it will squeeze the flip plate 39, thereby causing the flip plate 39 to flip towards the connecting pipe 12. The compression sleeve 16 supports the sealing plate 40 through the limiting block 42. During the bending process, the flip plate 39 will push the sealing plate 40. The pressure crack 41 on the surface of the sealing plate 40 can reduce the resistance to deformation of the sealing plate 40 to a certain extent. Under the squeezing action of the flip plate 39, the sealing plate 40 will adhere to the outer surface of the connecting pipe 12. The sealing plate 40 can seal the gap between the connecting pipe 12 and the compression sleeve 16, thereby reducing the entry of foreign objects into the compression sleeve 16 to a certain extent. This helps to reduce the probability of foreign objects causing jamming of the slider 34, thereby improving the stability and reliability of the thermal resistance installation and adjustment device during operation to a certain extent.

[0048] Working principle: During installation of the RTD, the mounting plate 14 is fixedly installed on the outside of the equipment through the mounting hole 17. The extrusion sleeve 16 is moved to an appropriate position on the outer surface of the connecting pipe 12. Then, the distance between the housing 11 and the fixed seat 25 is adjusted to an appropriate range. The operator rotates the spiral plate 19. During the movement, the spiral plate 19 pulls the scale 21 through the traction groove 20, thereby pulling the scale 21 out from inside the storage groove 22. By observing the position of the scale line on the surface of the scale 21 corresponding to the lower edge of the housing 11, the position of the spiral plate 19 can be determined. The movement distance of 9 is measured visually. During the downward movement of the top sleeve 15, it pushes the moving seat 36. The moving seat 36 drives the clamping plate 37 to move synchronously, so that the clamping plate 37 contacts the outer surface of the conduit 13. The clamping plates 37, which are arranged in a ring, clamp the outside of the conduit 13 and can play a good clamping and limiting role for the connecting pipe 12, thereby keeping the position of the connecting pipe 12 stable. The moving seat 36 drives the top plate 38 below it to move synchronously. The compression sleeve 16 supports the sealing plate 40 through the limiting block 42. The flip plate 39 During the bending process, the sealing plate 40 is pushed, and under the squeezing action of the flap 39, the sealing plate 40 adheres to the outer surface of the connecting pipe 12. The sealing plate 40 seals the gap between the connecting pipe 12 and the extrusion sleeve 16, thereby reducing the amount of foreign matter entering the extrusion sleeve 16. When the equipment vibration is transmitted to the mounting plate 14, the vibration shock wave is transmitted sequentially through the limiting plate 27 and the movable frame 28 to the spring 30. The elastic deformation of the spring 30 and the bladder 32 buffers the vibration shock wave. To a certain extent, the gas inside the first bladder 32 can reduce the transmission of shock waves to the fixed base 25. The gas inside the first bladder 32 will enter the second bladder 44 through the gas guide groove 31. The second bladder 44 will push the expansion plate 45 to move inside the slot 43. As the expansion plate 45 comes into contact with the inner wall of the guide groove 18 on the surface of the top sleeve 15, the expansion of the second bladder 44 can effectively increase the friction between the expansion plate 45 and the guide groove 18, thereby making the top sleeve 15 and the shell 11 stable and effectively reducing the impact of vibration on the accuracy of the thermal resistance detection.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for adjusting and fixing the insertion depth of a thermal resistor, comprising a housing (11), characterized in that: A connecting pipe (12) is fixedly connected to the lower outer surface of the housing (11), and a conduit (13) is fixedly connected to the lower outer surface of the connecting pipe (12). An adjustment assembly is provided on the outside of the connecting pipe (12). The adjustment assembly includes a spiral plate (19) threadedly connected to the upper side of the outer surface of the connecting pipe (12). A traction groove (20) is embedded in the upper outer surface of the spiral plate (19). A storage groove (22) is provided on the lower side of the inner surface of the housing (11). A scale (21) is slidably connected to the inner side of the storage groove (22). The lower end of the scale (21) is located inside the traction groove (20) and slides in contact with the inner surface of the traction groove (20).

2. The insertion depth adjustment and fixing device for a thermal resistor according to claim 1, characterized in that: A displacement assembly is provided on the lower side of the spiral plate (19). The displacement assembly includes a top sleeve (15) rotatably connected to the lower end of the spiral plate (19). A guide groove (18) is provided through the outer surface of the top sleeve (15). A slide rod (23) is slidably connected to the inner side of the guide groove (18). A fixed seat (25) is fixedly connected to the outer surface of the slide rod (23). The fixed seat (25) is annular. A compression sleeve (16) is fixedly connected to the lower outer surface of the fixed seat (25).

3. The insertion depth adjustment and fixing device for a thermal resistor according to claim 2, characterized in that: The lower side of the outer surface of the extrusion sleeve (16) is conical. A groove (33) is fixedly embedded in the inner surface of the extrusion sleeve (16). A slider (34) is slidably connected to the inner side of the groove (33). A movable seat (36) is fixedly connected to the outer surface of the slider (34). The upper outer surface of the movable seat (36) is in contact with the lower end of the top sleeve (15). The movable seat (36) is in sliding contact with the inner surface of the extrusion sleeve (16). A clamping plate (37) is fixedly connected to the side of the outer surface of the movable seat (36) away from the slider (34). The outer surface of the clamping plate (37) is in contact with the connecting pipe (12).

4. The insertion depth adjustment and fixing device for a thermal resistor according to claim 3, characterized in that: The traction groove (20) has a T-shaped structure and is distributed in an arc shape. The outer surface of the clamp (37) is serrated and made of wear-resistant material. The number of the slide groove (33), slider (34), moving seat (36) and clamp (37) are several groups and distributed in a ring array. An elastic band (35) is fixedly connected to the upper outer surface of the slider (34). The upper end of the elastic band (35) is fixedly connected to the upper side of the inner surface of the slide groove (33). The inner side of the conduit (13) is used to place the thermal resistor.

5. The insertion depth adjustment and fixing device for a thermal resistor according to claim 4, characterized in that: A buffer assembly is provided on the lower side of the fixed base (25). The buffer assembly includes a placement groove (26) on the lower outer surface of the fixed base (25). A bladder (32) is fixedly connected to the upper end of the inner surface of the placement groove (26). A movable frame (28) is slidably connected to the inner surface of the placement groove (26). A placement groove (29) is provided on the upper outer surface of the movable frame (28). The lower outer surface of the bladder (32) is fixedly connected to the placement groove (29).

6. The insertion depth adjustment and fixing device for a thermal resistor according to claim 5, characterized in that: A limiting plate (27) is fixedly connected to the lower outer surface of the movable frame (28). The limiting plate (27) is in the shape of a ring. An mounting plate (14) is fixedly connected to the outer surface of the limiting plate (27). An mounting hole (17) is opened through the upper outer surface of the mounting plate (14). The number of mounting holes (17) is several groups and they are arranged in a ring array. A spring (30) is fixedly connected to the inner surface of the bladder (32).

7. The insertion depth adjustment and fixing device for a thermal resistor according to claim 6, characterized in that: An expansion assembly is provided on the inner side of the slide rod (23). The expansion assembly includes a slot (43) embedded in the outer surface of the slide rod (23). A second bladder (44) is fixedly connected to the inner surface of the slot (43). An expansion plate (45) is slidably connected to the inner surface of the slot (43). The outer surface of the expansion plate (45) is arc-shaped. The outer surface of the second bladder (44) is fixedly connected to the expansion plate (45). The outer surface of the second bladder (44) is annular.

8. The insertion depth adjustment and fixing device for a thermal resistor according to claim 7, characterized in that: The fixed base (25) has an embedded air guide groove (31) on its inner side. The air guide groove (31) is distributed and connected to the inside of the first bladder (32) and the second bladder (44). The number of slots (43) and expansion plates (45) are several sets and arranged in a ring array. The outer surface of the expansion plate (45) slides in contact with the inner wall of the guide groove (18). A baffle (24) is fixedly connected to the side of the slide rod (23) away from the fixed base (25). The number of guide grooves (18) and slide rods (23) are two sets and arranged symmetrically.

9. The insertion depth adjustment and fixing device for a thermal resistor according to claim 8, characterized in that: The inner side of the extrusion sleeve (16) is provided with a clamping assembly. The clamping assembly includes a limiting block (42) fixedly connected to the lower side of the inner surface of the extrusion sleeve (16). The limiting block (42) is in the shape of a ring. A flap (39) is fixedly connected to the upper side of the inner surface of the extrusion sleeve (16). A top plate (38) is fixedly connected to the lower outer surface of the moving seat (36). The top plate (38) is in the shape of a ring and is located above the flap (39).

10. The insertion depth adjustment and fixing device for a thermal resistor according to claim 9, characterized in that: A sealing plate (40) is fixedly connected to the upper outer surface of the limiting block (42). A pressure crack (41) is opened on the upper side of the outer surface of the sealing plate (40). The pressure crack (41) is in several groups and is distributed in a ring array. The upper end of the flap (39) is in contact with the outer surface of the sealing plate (40). Both the flap (39) and the sealing plate (40) are made of elastic material.

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