Thermocouple with adjustable measurement depth

Abstract

The utility model provides a thermocouple with adjustable measurement depth, and belongs to the technical field of temperature detection. Comprising a junction box, the bottom of the junction box is fixedly connected with a connecting block, the bottom of the connecting block is fixedly connected with a bottom block, the outer side of the bottom end of the bottom block is in threaded connection with a protective sleeve, the outer side of the connecting block is rotationally connected with a plurality of upper rods, and the other ends of the upper rods are rotationally connected with lower rods; through the arrangement of the inner threaded ring, the upper rod, the lower rod and the transmission rod, the device can rotate the inner threaded ring on the outer side of the threaded sleeve and drive the fixing sleeve to move up and down, the transmission rod can push the upper rod and the lower rod to rotate and fold, and the fixing plate slides on the outer side of the protective sleeve through the outer connecting ring so as to adjust the position of the fixing plate. The measuring depth of the device can be conveniently adjusted, so that the device can accurately adjust the position of the fixing plate without disassembling parts, and the working efficiency and flexibility of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of temperature detection technology, and in particular to a thermocouple with adjustable measurement depth. Background Technology

[0002] Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert the temperature signal into a thermoelectric potential signal, which is then converted into the temperature of the measured medium by an electrical instrument. The appearance of various thermocouples often varies depending on the requirements, but their basic structure is roughly the same. They are usually composed of thermocouple wires, insulating sleeves, protective sheaths, and junction boxes, and are typically used in conjunction with display instruments, recording instruments, and electronic controllers.

[0003] Patent CN208902288U discloses a detachable thermocouple for easy adjustment of measurement depth, comprising a flange and a protective sleeve. A mounting hole is passed through the center of the flange, and an annular support plate is installed within the mounting hole. The top surface of the annular support plate is lower than the top surface of the flange. The upper surface of the annular support plate has non-penetrating locking grooves at its left and right ends and penetrating adjustment grooves at its front and rear ends. Several locking blocks are arranged from top to bottom on the left and right sides of the outer wall of the protective sleeve. Two locking blocks on the same horizontal line of the protective sleeve are engaged in the locking grooves. Two semi-circular fixing plates are provided outside the protective sleeve and are fixed to the flange by fastening bolts. A thermocouple core is located inside the protective sleeve, and a junction box is located at the top of the protective sleeve, connecting the thermocouple core to the junction box.

[0004] In the above case, two semi-circular fixing plates are fixed to the outside of the flange with bolts, and the flange position is fixed by the snap-fit ​​blocks on the outside of the protective sleeve and the snap-fit ​​groove, so as to fix the thermocouple. However, when adjusting the flange position, the semi-circular fixing plates need to be disassembled and the flange is fixed by the distributed snap-fit ​​blocks, which makes the adjustment process more complicated and the flange position cannot be adjusted flexibly.

[0005] Therefore, this invention provides a thermocouple with adjustable measurement depth to meet the requirements. Utility Model Content

[0006] The purpose of this invention is to provide a thermocouple with adjustable measurement depth to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a thermocouple with adjustable measurement depth, comprising a junction box, a connecting block fixedly connected to the bottom of the junction box, a bottom block fixedly connected to the bottom of the connecting block, a protective sleeve threadedly connected to the outer side of the bottom end of the bottom block, a plurality of upper rods rotatably connected to the outer side of the connecting block, a lower rod rotatably connected to the other end of the upper rods, a common outer ring rotatably connected to the bottom of the plurality of lower rods, a fixing plate fixedly connected to the bottom of the outer ring, the fixing plate slidingly contacting the outer side of the protective sleeve, a threaded sleeve fixedly connected to the outer side of the bottom of the connecting block, an inner threaded ring threadedly connected to the outer side of the threaded sleeve, a fixing sleeve sleeved on the outer side of the inner threaded ring, a plurality of transmission rods whose positions are adapted to the upper rods rotatably connected to the outer side of the fixing sleeve, and the other end of the transmission rod rotatably connected to the top end of the upper rod near the connecting block.

[0008] In a preferred embodiment, there are four upper rods and four lower rods, which are arranged in a ring around the outside of the connecting block.

[0009] In a preferred embodiment, the threaded sleeve is located on the outside of the base block, and a rotating ring is fixedly connected to the inner side of the bottom of the internal threaded ring.

[0010] In a preferred embodiment, a heating electrode is fixedly connected to the bottom of the base block, and the heating electrode is located inside the protective sleeve.

[0011] In a preferred embodiment, the number of transmission rods is four, which are distributed in a ring around the outer side of the inner threaded ring, and the top and bottom ends of the fixing sleeve are tightly fitted with the upper and lower ends of the inner threaded ring, respectively.

[0012] In a preferred embodiment, the fixing plate includes a sliding ring fixedly connected to its inner side, which is slidably connected to the outer side of the protective sleeve.

[0013] In a preferred embodiment, an insulating sleeve is fixedly connected to the outside of the thermoelectrode, and the outside of the insulating sleeve is in close contact with the inside of the protective sleeve.

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

[0015] This utility model, by setting an inner threaded ring, an upper rod, a lower rod, and a transmission rod, allows the device to rotate the inner threaded ring outside the threaded sleeve, driving the fixed sleeve to move up and down. The transmission rod can push the upper and lower rods to rotate and fold, and the outer connecting ring allows the fixed plate to slide outside the protective sleeve to adjust the position of the fixed plate. This facilitates the adjustment of the measurement depth, allowing the device to accurately adjust the position of the fixed plate without disassembling the components, thus increasing the device's working efficiency and flexibility.

[0016] This utility model, by setting a base block and a protective sleeve, allows the device to quickly install and remove the protective sleeve through the threaded connection between the base block and the protective sleeve, facilitating the replacement and cleaning of the protective sleeve. The sliding ring on the inner side of the fixing plate limits the position of the protective sleeve, ensuring the stability of the device. Attached Figure Description

[0017] Figure 1 A schematic diagram of a three-dimensional structure of a thermocouple with adjustable measurement depth;

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of a thermocouple with adjustable measurement depth.

[0019] Figure 3 for Figure 2 Enlarged view of point A;

[0020] Figure 4 for Figure 2 Enlarged diagram of point B.

[0021] In the diagram: 1. Junction box; 2. Connecting block; 3. Base block; 4. Thermoelectric electrode; 5. Protective sleeve; 6. Upper rod; 7. Lower rod; 8. Fixing plate; 9. Outer ring; 10. Threaded sleeve; 11. Inner threaded ring; 12. Fixing sleeve; 13. Transmission rod; 14. Rotating ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention; the conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the concept of the present invention are all within the scope of protection claimed by the present invention.

[0024] Please see Figures 1-4 This utility model provides a thermocouple with adjustable measurement depth, including a junction box 1. A connecting block 2 is fixedly connected to the bottom of the junction box 1. A bottom block 3 is fixedly connected to the bottom of the connecting block 2. A protective sleeve 5 is threadedly connected to the outer side of the bottom end of the bottom block 3. Several upper rods 6 are rotatably connected to the outer side of the connecting block 2. A lower rod 7 is rotatably connected to the other end of the upper rod 6. The bottom of the several lower rods 7 is rotatably connected to the same outer ring 9. A fixing plate 8 is fixedly connected to the bottom of the outer ring 9. The fixing plate 8 slides in contact with the outer side of the protective sleeve 5. A thermoelectrode 4 is fixedly connected to the bottom of the bottom block 3. The thermoelectrode 4 is located inside the protective sleeve 5. The fixing plate 8 includes a sliding ring fixedly connected to its inner side, which slides in contact with the outer side of the protective sleeve 5. An insulating sleeve is fixedly connected to the outer side of the thermoelectrode 4. The outer side of the insulating sleeve is in close contact with the inner side of the protective sleeve 5.

[0025] The protective sleeve 5 is fitted between the thermoelectrode 4 and the fixing plate 8, and threaded to the outside of the bottom block 3.

[0026] When the protective sleeve 5 becomes worn, damaged, or deformed due to long-term use, the user can quickly remove and replace it with a new one through the screw connection between the protective sleeve 5 and the base block 3, without the need for complicated tools or operating procedures. The sliding ring on the inner side of the fixing plate 8 not only plays a sliding role, but also limits the position of the protective sleeve 5, ensuring that the protective sleeve 5 always maintains the correct position in the device. This precise positioning function allows the position of the protective sleeve 5 to be controlled during the installation and removal of the device, thereby improving the reliability of the device.

[0027] Please see Figures 1-4 A threaded sleeve 10 is fixedly connected to the outer side of the bottom of the connecting block 2. An inner threaded ring 11 is threadedly connected to the outer side of the threaded sleeve 10. A fixed sleeve 12 is fitted on the outer side of the inner threaded ring 11. Several transmission rods 13 with positions adapted to the upper rod 6 are rotatably connected to the outer side of the fixed sleeve 12. The other end of the transmission rod 13 is rotatably connected to the top of the upper rod 6 near the side of the connecting block 2. There are four upper rods 6 and four lower rods 7. The upper rods 6 and the lower rods 7 are distributed in a ring on the outer side of the connecting block 2. The threaded sleeve 10 is located on the outer side of the bottom block 3. A rotating ring 14 is fixedly connected to the inner side of the bottom of the inner threaded ring 11. There are four transmission rods 13, which are distributed in a ring on the outer side of the inner threaded ring 11. The inner sides of the top and bottom of the fixed sleeve 12 are tightly fitted to the upper and lower ends of the inner threaded ring 11, respectively.

[0028] Rotating the inner threaded ring 11 via the rotating ring 14 causes the fixed sleeve 12 to move. The motion is transmitted to the upper rod 6 via the transmission rod 13, causing the upper rod 6 and the lower rod 7 to rotate. The outer ring 9 drives the fixed plate 8 to slide along the outside of the protective sleeve 5, moving the fixed plate 8 to a suitable position. The device is then installed in the appropriate position via the fixed plate 8.

[0029] When the inner threaded ring 11 is rotated, it moves up and down along the threaded sleeve 10 under the action of the thread, and drives the fixed sleeve 12 that fits tightly with it to move together. The movement is transmitted to the upper rod 6 through the transmission rod 13. When the upper rod 6 is pushed by the transmission rod 13, the upper rod 6 and the lower rod 7 will rotate around their rotation connection point, thereby realizing the action of extension or folding. This extension and retraction action can change the position of the outer ring 9, thereby driving the fixed plate 8 to slide along the outside of the protective sleeve 5. Through this design, the device can accurately adjust the position of the fixed plate 8 without disassembling any parts, thereby realizing flexible adjustment of the measurement depth. This adjustment method without disassembling parts greatly improves work efficiency, reduces operation steps and time costs. At the same time, since the adjustment process is realized through mechanical linkage, its accuracy and stability are also guaranteed, making the device more reliable and convenient in practical applications.

[0030] The working principle and usage process of this utility model are as follows: The protective sleeve 5 is sleeved between the thermoelectrode 4 and the fixing plate 8, and threaded to the outside of the bottom block 3. The inner threaded ring 11 is rotated by the rotating ring 14, which drives the fixing sleeve 12 to move. The motion is transmitted to the upper rod 6 through the transmission rod 13, so that the upper rod 6 and the lower rod 7 rotate. The fixing plate 8 is driven to slide along the outside of the protective sleeve 5 through the outer connecting ring 9, and the fixing plate 8 is moved to a suitable position. The device is then installed in a suitable position through the fixing plate 8.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermocouple with adjustable measurement depth, comprising a junction box (1), characterized in that, A connecting block (2) is fixedly connected to the bottom of the junction box (1), and a bottom block (3) is fixedly connected to the bottom of the connecting block (2). A protective sleeve (5) is threadedly connected to the outer side of the bottom end of the bottom block (3). Several upper rods (6) are rotatably connected to the outer side of the connecting block (2). A lower rod (7) is rotatably connected to the other end of the upper rod (6). The bottom of several lower rods (7) is rotatably connected to the same outer ring (9). A fixing plate (8) is fixedly connected to the bottom of the outer ring (9). The fixed plate (8) slides in contact with the outside of the protective sleeve (5). A threaded sleeve (10) is fixedly connected to the outside of the bottom of the connecting block (2). An inner threaded ring (11) is threadedly connected to the outside of the threaded sleeve (10). A fixed sleeve (12) is fitted on the outside of the inner threaded ring (11). Several transmission rods (13) with positions adapted to the upper rod (6) are rotatably connected to the outside of the fixed sleeve (12). The other end of the transmission rod (13) is rotatably connected to the top of the upper rod (6) near the connecting block (2).

2. The thermocouple with adjustable measurement depth according to claim 1, characterized in that, The number of the upper rod (6) and the lower rod (7) are both four, and the upper rod (6) and the lower rod (7) are arranged in a ring on the outside of the connecting block (2).

3. The thermocouple with adjustable measurement depth according to claim 1, characterized in that, The threaded sleeve (10) is located on the outside of the base block (3), and a rotating ring (14) is fixedly connected to the inner side of the bottom of the inner threaded ring (11).

4. The thermocouple with adjustable measurement depth according to claim 1, characterized in that, A thermoelectric electrode (4) is fixedly connected to the bottom of the base block (3), and the thermoelectric electrode (4) is located inside the protective sleeve (5).

5. The thermocouple with adjustable measurement depth according to claim 1, characterized in that, The transmission rods (13) are four in number and are arranged in a ring on the outside of the inner threaded ring (11). The top and bottom ends of the fixing sleeve (12) are tightly fitted to the upper and lower ends of the inner threaded ring (11), respectively.

6. The thermocouple with adjustable measurement depth according to claim 1, characterized in that, The fixing plate (8) includes a sliding ring fixedly connected to its inner side, which is slidably connected to the outer side of the protective sleeve (5).

7. A thermocouple with adjustable measurement depth according to claim 4, characterized in that, An insulating sleeve is fixedly connected to the outside of the thermoelectrode (4), and the outside of the insulating sleeve is in close contact with the inside of the protective sleeve (5).

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