Temperature transmitter with adjustable temperature detection rod

Abstract

The utility model provides a temperature transmitter with an adjustable temperature detection rod, comprising a mounting plate, the periphery of the bottom of the mounting plate is fixedly connected with electric lifting rods, a bearing plate is fixedly connected among the output ends of the four electric lifting rods, the top of the bearing plate is fixedly connected with a positioning box through screws, and the positioning box is fixedly connected with the bottom of the mounting plate through screws. Compared with the prior art, the beneficial effects of the utility model are that through the downward movement of the detection rod, the protective cover and the bearing plate can extrude the spring, so that the protective cover can be pushed in the reverse direction through the resilience force of the spring, the protective cover is ensured not to be influenced by the up-down movement of the detection rod, and the detection accuracy is improved. The protective cover is tightly attached to the outer surface of a hot blast stove or a hot air pipeline, the position of the protective cover on the detection rod can be flexibly adjusted according to the detection depth, it is guaranteed that the thermocouple junction box above is normally protected, and the protection effect on the temperature thermocouple mechanism is improved.

Description

Technical Field

[0001] The utility model relates to a temperature transmitter with an adjustable temperature detection rod, belonging to the field of thermocouple equipment. Background Art

[0002] Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert temperature signals into thermoelectric potential signals, which are then converted into the temperature of the measured medium through electrical instruments (secondary instruments). The appearance of various thermocouples is often very different due to needs, but their basic structure is roughly the same. They are usually composed of main parts such as thermode, insulating sleeve protection tube and junction box, and are usually used in conjunction with display instruments, recording instruments and electronic regulators.

[0003] In the prior art, a thermocouple is installed on the output end of an external lifting mechanism, and the lifting mechanism is started to move the detection rod of the thermocouple to the inside of the hot air device for temperature measurement. In order to ensure that the hot air inside the hot air device does not leak out from the connection to melt the thermocouple wire, an anti-leakage mechanism is usually installed on the electrode tube of the thermocouple to block the hot air. However, since the anti-leakage mechanism is fixed, the detection depth of the thermocouple detection rod can only be fixed. If the thermocouple needs to be moved up and down, the gap at the connection between the thermocouple and the hot air cannot be covered, thereby causing the hot air to still leak, reducing the protection effect of the temperature measuring thermocouple mechanism.

[0004] In summary, the utility model provides a temperature transmitter with an adjustable temperature detection rod to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a temperature transmitter with an adjustable temperature detection rod to solve the problem of limited high temperature protection of temperature measuring thermocouples proposed in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a temperature transmitter with an adjustable temperature detection rod, including a mounting plate, electric lifting rods are fixedly connected to the four sides of the bottom of the mounting plate, a load-bearing plate is fixedly connected between the output ends of the four electric lifting rods, the top of the load-bearing plate is fixedly connected to a positioning box by screws, the top of the inner wall of the positioning box is fixedly connected to a foam positioning pad, the bottom of the foam positioning pad and the top of the load-bearing plate are embedded with a thermocouple junction box, the bottom of the thermocouple junction box is fixedly connected with a detection rod, one end of the detection rod passes through the load-bearing plate and extends to the bottom of the load-bearing plate, and the bottom of the load-bearing plate and the rod surface of the detection rod are covered with a protective component.

[0007] Furthermore, the bottom of the thermocouple junction box is in contact with the top of the load-bearing plate, and the bottom of the positioning box is connected to the interior.

[0008] Furthermore, a groove for embedding a thermocouple junction box is provided at the bottom of the foam positioning pad, and the detection rod is in contact with the load-bearing plate.

[0009] Furthermore, the protective component includes a movable plate, which is sleeved on the rod surface of the detection rod and is located directly below the load-bearing plate, a spring is sleeved between the top of the movable plate and the bottom of the load-bearing plate and located on the rod surface of the detection rod, a mounting sleeve is sleeved on the rod surface of the detection rod and located at the bottom of the movable plate, and a protective cover is sleeved on the outside of the mounting sleeve.

[0010] Furthermore, one end of the spring is fixedly connected to the bottom of the load-bearing plate, the other side of the spring is fixedly connected to the top of the movable plate, the spring is in contact with the detection rod, the movable plate is in contact with the detection rod, and the bottom of the movable plate is fixedly connected to the top of the mounting sleeve.

[0011] Furthermore, the installation sleeve is in contact with the detection rod, and the installation sleeve is threadedly connected to the protective cover.

[0012] Furthermore, the protective cover is in the shape of a hollow truncated cone, and the bottom of the protective cover is connected to the interior.

[0013] Beneficial effects of the utility model:

[0014] By moving the detection rod downward, the protective cover and the load-bearing plate can squeeze the spring, so that the protective cover can be pushed in the opposite direction by the resilience of the spring, ensuring that the protective cover is not affected by the up and down movement of the detection rod, and fits tightly with the outer surface of the hot air furnace or the hot air duct. The position of the protective cover on the detection rod can be flexibly adjusted according to the detection depth, ensuring the normal protection of the thermocouple junction box above, thereby improving the protection effect of the temperature measuring thermocouple mechanism.

[0015] The connection between the detection rod and the external hot air furnace can be covered by a protective cover, thereby preventing the hot air leaking from the gap from being directly discharged upward, reducing the phenomenon of the upper thermocouple junction box being baked by hot air, preventing the internal thermocouple wire of the thermocouple junction box from being melted by high temperature, and extending the service life of the temperature measuring thermocouple mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is a schematic structural stereogram of a temperature transmitter with an adjustable temperature detection rod according to the utility model;

[0018] Figure 2 This is a schematic front view of the structure of a temperature transmitter with an adjustable temperature detection rod according to the utility model;

[0019] Figure 3 This is a main cross-sectional view showing the structure of a temperature transmitter with an adjustable temperature detection rod according to the utility model;

[0020] Figure 4 for Figure 3 The structural schematic main cross-sectional view of the protective component shown.

[0021] In the figure: 1. Mounting plate; 2. Electric lifting rod; 3. Load-bearing plate; 4. Positioning box; 5. Foam positioning pad; 6. Thermocouple junction box; 7. Detection rod; 8. Protection assembly; 81. Spring; 82. Movable plate; 83. Mounting sleeve; 84. Protective cover. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1-4 The utility model provides a technical solution: a temperature transmitter with an adjustable temperature detection rod, comprising a mounting plate 1, electric lifting rods 2 are fixedly connected to the four sides of the bottom of the mounting plate 1, a load-bearing plate 3 is fixedly connected between the output ends of the four electric lifting rods 2, the four electric lifting rods 2 are connected to an external power supply and are provided with the same power control switch, a positioning box 4 is fixedly connected to the top of the load-bearing plate 3 by screws, a foam positioning pad 5 is fixedly connected to the top of the inner wall of the positioning box 4, a thermocouple junction box 6 is embedded at the bottom of the foam positioning pad 5 and located at the top of the load-bearing plate 3, a detection rod 7 is fixedly connected to the bottom of the thermocouple junction box 6, and one end of the detection rod 7 The end passes through the load-bearing plate 3 and extends to the bottom of the load-bearing plate 3. The bottom of the load-bearing plate 3 and the rod surface sleeve of the detection rod 7 are provided with a protective component 8. Threaded holes for matching screws are provided on all sides of the top of the mounting plate 1. By removing the screws, the positioning box 4 can be removed from the top of the load-bearing plate 3. The bottom of the thermocouple junction box 6 is in contact with the top of the load-bearing plate 3. The bottom of the positioning box 4 is connected to the interior. The bottom of the foam positioning pad 5 is provided with a groove for matching the thermocouple junction box 6. The detection rod 7 is in contact with the load-bearing plate 3. The foam positioning pad 5 is elastic, so that the thermocouple junction box 6 can be fixed to the top of the load-bearing plate 3 while avoiding excessive extrusion.

[0024] See also Figure 3-4The protective assembly 8 includes a movable plate 82, which is sleeved on the rod surface of the detection rod 7 and is located directly below the load-bearing plate 3. A spring 81 is sleeved between the top of the movable plate 82 and the bottom of the load-bearing plate 3 and located on the rod surface of the detection rod 7. A mounting sleeve 83 is sleeved on the rod surface of the detection rod 7 and located at the bottom of the movable plate 82. A protective cover 84 is sleeved on the outside of the mounting sleeve 83. One end of the spring 81 is fixedly connected to the bottom of the load-bearing plate 3, and the other side of the spring 81 is fixedly connected to the top of the movable plate 82. The spring 81 contacts the detection rod 7, and the movable plate 82 contacts the detection rod 7. The bottom of the movable plate 82 is fixedly connected to the top of the mounting sleeve 83. As the detection rod 7 moves downward, the protective cover 84 and the load-bearing plate 3 can squeeze the spring 81, so that it can pass The rebound force of the spring 81 pushes the protective cover 84 in the reverse direction to ensure that the protective cover 84 is not affected by the up and down movement of the detection rod 7, and is tightly fitted with the outer surface of the hot air furnace or the hot air duct to ensure that the protection work of the upper thermocouple junction box 6 is carried out normally. The mounting sleeve 83 is in contact with the detection rod 7, and the mounting sleeve 83 is threadedly connected to the protective cover 84. The protective cover 84 is in the shape of a hollow truncated cone, and the bottom of the protective cover 84 is connected to the inside. The protective cover 84 can cover the connection between the detection rod 7 and the external hot air furnace, thereby preventing the hot air leaking from the gap from being directly discharged upward, reducing the phenomenon that the upper thermocouple junction box 6 is baked by hot air, preventing the internal thermocouple wire of the thermocouple junction box 6 from being melted by high temperature, and extending the service life of the temperature measuring thermocouple mechanism.

[0025] Specific implementation method: By passing the detection rod 7 at the bottom of the thermocouple junction box 6 through the load-bearing plate 3, and then aligning the groove at the bottom of the foam positioning pad 5 inside the positioning box 4 with the top of the thermocouple junction box 6, when the bottom of the positioning box 4 contacts the top of the load-bearing plate 3, the bottom of the foam positioning pad 5 and the top of the thermocouple junction box 6 are embedded in each other, and the positioning box 4 is fixed to the top of the load-bearing plate 3 by screws. The foam positioning pad 5 is elastic, so that the thermocouple junction box 6 can be fixed to the top of the load-bearing plate 3 while avoiding excessive squeezing. By starting the four electric lifting rods 2, the load-bearing plate 3 is pushed to move downward, thereby driving the thermocouple junction box 6 and the detection rod 7 fixed inside the positioning box 4 to move downward at the same time, and the bottom end of the detection rod 7 is moved to the inside of the hot air furnace or hot air duct waiting for detection equipment, and the bottom of the protective cover 84 is aligned with the equipment to be detected. The protective cover 84 can cover the connection between the detection rod 7 and the external hot air furnace, thereby preventing the hot air leaking from the gap from being directly discharged upward, reducing the phenomenon that the upper thermocouple junction box 6 is baked by hot air, preventing the internal thermocouple wire of the thermocouple junction box 6 from being melted by high temperature, and extending the service life of the temperature measuring thermocouple mechanism. As the detection rod 7 moves downward, the protective cover 84 and the load-bearing plate 3 can squeeze the spring 81, so that the protective cover 84 can be pushed in the opposite direction by the rebound force of the spring 81, ensuring that the protective cover 84 is not affected by the upward and downward movement of the detection rod 7, and is tightly fitted with the outer surface of the hot air furnace or the hot air duct. The position of the protective cover 84 on the detection rod 7 can be flexibly adjusted according to the detection depth, to ensure that the protection work of the upper thermocouple junction box 6 is carried out normally, thereby improving the protection effect of the temperature measuring thermocouple mechanism.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A temperature transmitter with an adjustable temperature detection rod, comprising a mounting plate (1), characterized in that: The bottom of the mounting plate (1) is fixedly connected with electric lifting rods (2) on all sides, a bearing plate (3) is fixedly connected between the output ends of the four electric lifting rods (2), the top of the bearing plate (3) is fixedly connected with a positioning box (4) by screws, the top of the inner wall of the positioning box (4) is fixedly connected with a foam positioning pad (5), the bottom of the foam positioning pad (5) and located on the top of the bearing plate (3) is embedded with a thermocouple junction box (6), the bottom of the thermocouple junction box (6) is fixedly connected with a detection rod (7), one end of the detection rod (7) passes through the bearing plate (3) and extends to the bottom of the bearing plate (3), and a protective component (8) is provided at the bottom of the bearing plate (3) and located on the rod surface of the detection rod (7).

2. The temperature transmitter with an adjustable temperature detection rod according to claim 1, characterized in that: The bottom of the thermocouple junction box (6) is in contact with the top of the load-bearing plate (3), and the bottom of the positioning box (4) is in communication with the interior.

3. The temperature transmitter with an adjustable temperature detection rod according to claim 1, characterized in that: The bottom of the foam positioning pad (5) is provided with a groove for embedding a thermocouple junction box (6), and the detection rod (7) is in contact with the load-bearing plate (3).

4. The temperature transmitter with an adjustable temperature detection rod according to claim 1, characterized in that: The protective assembly (8) comprises a movable plate (82), the movable plate (82) being sleeved on the rod surface of the detection rod (7) and being located directly below the load-bearing plate (3), a spring (81) being sleeved between the top of the movable plate (82) and the bottom of the load-bearing plate (3) and being located on the rod surface of the detection rod (7), a mounting sleeve (83) being sleeved on the rod surface of the detection rod (7) and being located on the bottom of the movable plate (82), and a protective cover (84) being sleeved on the outside of the mounting sleeve (83).

5. The temperature transmitter with an adjustable temperature detection rod according to claim 4, characterized in that: One end of the spring (81) is fixedly connected to the bottom of the load-bearing plate (3), and the other side of the spring (81) is fixedly connected to the top of the movable plate (82). The spring (81) is in contact with the detection rod (7), and the movable plate (82) is in contact with the detection rod (7). The bottom of the movable plate (82) is fixedly connected to the top of the mounting sleeve (83).

6. The temperature transmitter with an adjustable temperature detection rod according to claim 5, characterized in that: The installation sleeve (83) is in contact with the detection rod (7), and the installation sleeve (83) is threadedly connected to the protective cover (84).

7. The temperature transmitter with an adjustable temperature detection rod according to claim 5, characterized in that: The protective cover (84) is in the shape of a hollow truncated cone, and the bottom of the protective cover (84) is connected to the interior.

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