CN215296470U - Infrared temperature measuring device - Google Patents

Abstract

The application relates to an infrared temperature measuring device belongs to the temperature detection equipment field, include: a first casing having a cylindrical shape; a temperature detection assembly is arranged in the first shell, one end of the temperature detection assembly faces towards a detected target to sense infrared rays, one end of the temperature detection assembly, which deviates from the detected target, is connected with a first cable, the first cable is led out from one end of the first shell, and an independent accommodating space is formed inside the first shell; the signal processing assembly is arranged outside the first shell and used for processing the signal output by the temperature detection assembly; the input end of the signal processing assembly is connected with the temperature detection assembly through a first cable, and the output end of the signal processing assembly is connected with a second cable. The application provides an infrared temperature measuring device has small, simple structure, with low costs and the high advantage of temperature measurement degree of accuracy.

Description

Infrared temperature measuring device

Technical Field

The application relates to the field of temperature detection equipment, in particular to an infrared temperature measuring device.

Background

In factories, mines and other production enterprises, an infrared thermometer is usually adopted to detect the temperature of equipment, materials and the like so as to ensure safe production and product quality. For example, in steel production, the casting temperature of molten steel needs to be detected to ensure that a cast billet meets the requirements of subsequent production. At present, the adopted infrared thermometer is generally large in size, a detection probe is connected with a case for data processing and transmission, the structure is complex, and the cost is high.

SUMMERY OF THE UTILITY MODEL

In order to reduce the volume of infrared thermometer and reduce cost, this application provides an infrared temperature measuring device.

The application provides an infrared temperature measuring device adopts following technical scheme:

an infrared temperature measuring device, comprising:

a first casing having a cylindrical shape;

the temperature detection assembly is arranged in the first shell and used for detecting the temperature of a target, one end of the temperature detection assembly faces the target to be detected so as to sense infrared rays, one end of the temperature detection assembly, which is far away from the target to be detected, is connected with a first cable, the first cable is led out from one end of the first shell, and an independent accommodating space is formed in the first shell;

the signal processing assembly is arranged outside the first shell and used for processing the signal output by the temperature detection assembly; the input end of the signal processing assembly is connected with the temperature detection assembly through a first cable, and the output end of the signal processing assembly is connected with a second cable.

By adopting the technical scheme, the infrared temperature measuring device is small in overall size, simple in structure and low in cost; meanwhile, the signal processing assembly is located outside the space where the temperature detection assembly is located, so that the generated temperature field cannot influence the detection environment of the temperature detection assembly, and the accuracy of temperature detection can be improved.

Optionally, the temperature detection assembly comprises an objective lens, an aperture diaphragm, a device diaphragm, a mounting seat and an infrared thermopile which are sequentially arranged along the axial direction of the first shell, and the output end of the infrared thermopile is connected with one end of the first cable.

By adopting the technical scheme, the infrared rays emitted by the detected target can be sensed, and the detection precision is improved.

Optionally, the cable testing device further comprises a second shell, the second shell is coaxially and detachably connected to the outside of one end, away from the tested object, of the first shell, the signal processing assembly is arranged in the second shell, and the second cable is led out from one end, away from the first shell, of the second shell.

Optionally, the signal processing assembly is encapsulated in an injection molding manner.

Optionally, the temperature detection device further comprises a support assembly, wherein the support assembly is connected with the first housing and is used for supporting the first housing and adjusting the orientation of the temperature detection assembly relative to the detected target.

By adopting the technical scheme, the infrared temperature measuring device is convenient to install, the position of the temperature detection assembly relative to the temperature measured target is convenient to adjust, and the convenience of installation and adjustment is improved.

Optionally, the support assembly includes a base, and a first support seat is connected to the base and can rotate around a straight line perpendicular to the base;

the one end that the base was kept away from to first supporting seat is connected with the second supporting seat, the second supporting seat can use the straight line that is on a parallel with the base as the rotation of axes, can dismantle on the second supporting seat and be provided with the connecting seat, first casing can dismantle connect in on the connecting seat.

Optionally, the first support seat includes a first horizontal plate and a first vertical plate, which are perpendicular to each other, and the first horizontal plate is parallel to the base;

a first through hole and a first arc-shaped hole are formed in the first horizontal plate, and the first through hole is positioned in the circle center of the first arc-shaped hole;

the base is provided with a first threaded hole corresponding to the first through hole and a second threaded hole corresponding to the first arc-shaped hole, a first bolt penetrates through the first through hole and the first threaded hole, a second bolt penetrates through the first arc-shaped hole and the second threaded hole, and the first supporting seat can rotate around the axis of the first bolt.

Optionally, the second support seat includes a second horizontal plate and a second vertical plate which are perpendicular to each other, the second vertical plate is parallel to the first vertical plate and is attached to the first vertical plate, the second horizontal plate is perpendicular to the second vertical plate, and the connecting seat is disposed on a side surface of the second horizontal plate, which is far away from the base;

a second through hole and a second arc-shaped hole are formed in the second vertical plate, and the second through hole is positioned in the circle center of the second arc-shaped hole;

the first vertical plate is provided with a third threaded hole corresponding to the second through hole and a fourth threaded hole corresponding to the second arc-shaped hole, a third bolt penetrates through the second through hole and the third threaded hole, a fourth bolt penetrates through the second arc-shaped hole and the fourth threaded hole, and the second supporting seat can rotate around the axis of the third bolt.

Optionally, the connecting seat comprises a supporting block fixedly arranged on one side surface of the second horizontal plate far away from the base, clamping plates are symmetrically arranged on two sides of the supporting block along the length direction of the first shell, and one ends of the two clamping plates far away from the base extend to the middle position of the two clamping plates to form a flange;

the outer surface of the first shell is provided with a sliding groove matched with the flange, and the distance between the temperature detection assembly and a detected object can be adjusted when the flange slides in the sliding groove.

Optionally, the shape of the surface of the supporting block close to the first shell matches the shape of the outer surface of the first shell.

In summary, the present application has at least one of the following technical effects:

1. the temperature detection assembly is arranged in the first shell, and the signal processing assembly is arranged in the second shell or is encapsulated in an injection molding mode, so that the overall size of the infrared temperature measurement equipment is reduced, the structure is simplified, and the cost is reduced;

2. the signal processing assembly is positioned outside the first shell, and a temperature field generated by the signal processing assembly cannot influence the detection environment of the temperature detection assembly, so that the accuracy of temperature detection can be improved;

3. the arrangement of the supporting component improves the convenience of installation and adjustment of the infrared temperature measuring device.

Drawings

FIG. 1 is a schematic cross-sectional view of an infrared temperature measuring device according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an infrared temperature measuring device according to another embodiment of the present application;

FIG. 3 is a schematic three-dimensional view of the first housing coupled to the support assembly;

fig. 4 is an exploded view of the support assembly.

Description of reference numerals: 1. a first housing; 11. a chute; 2. a temperature detection assembly; 21. an objective lens; 22. an aperture diaphragm; 23. a device diaphragm; 24. a mounting seat; 25. an infrared thermopile; 26. pressing a ring; 27. pressing a ring; 3. a first cable; 4. a signal processing component; 5. a second housing; 51. a first wiring hole; 52. a first end cap; 521. a second wiring hole; 53. a gasket; 6. a second cable; 7. a second end cap; 8. a support assembly; 81. a base; 811. a first threaded hole; 812. a second threaded hole; 82. a first support base; 821. a first horizontal plate; 8211. a first through hole; 8212. a first arcuate aperture; 822. a first vertical plate; 8221. a third threaded hole; 8222. a fourth threaded hole; 83. a second support seat; 831. a second horizontal plate; 832. a second vertical plate; 8321. a second through hole; 8322. a second arcuate aperture; 84. a connecting seat; 841. a support block; 842. a clamping and connecting plate; 8421. a flange.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Referring to fig. 1, the embodiment of the application discloses an infrared temperature measuring device, including first casing 1, be provided with temperature detecting component 2 in the first casing 1, the one end orientation of temperature detecting component 2 is surveyed the target and is in order to receive the infrared ray of being surveyed the target radiation, and the other end of temperature detecting component 2 is connected with first cable 3, and the one end that temperature detecting component 2 was kept away from to first cable 3 is connected with signal processing subassembly 4, and signal processing subassembly 4 is located the outside of first casing 1.

Referring to fig. 1, the first housing 1 is cylindrical, and the cross-sectional area thereof may be various regular geometric shapes such as a circle, a triangle, or a square, and both ends of the first housing 1 are open ends. In the present application, taking the first housing 1 having a circular cross section as an example, the outer diameter of the first housing 1 is less than 30 mm.

The temperature detection assembly 2 includes an objective lens 21, an aperture stop 22, a device stop 23, a mount 24, and an infrared thermopile 25, which are sequentially arranged along the axial direction of the first housing 1. The objective lens 21 plays a role in converging incident light, and the aperture diaphragm 22 is used for limiting the incident angle of light emitted by a measured target, so that the accuracy of temperature measurement is improved; the device diaphragm 23 is used for reducing the influence of external stray light on the infrared thermopile 25 on the measurement effect; the mount 24 can be used not only to fix the infrared thermopile 25 but also to further reduce stray light from being irradiated onto the infrared thermopile 25; the first cable 3 is connected to an output end of the infrared thermopile 25 and led out of the first case 1 to facilitate signal output.

Referring to fig. 1, an objective lens 21 is accommodated in a first housing 1 from one end thereof, a boss for axially positioning the objective lens 21 is formed on an inner wall of the first housing 1, and a pressing ring 26 having a relatively soft texture is attached to a surface of the objective lens 21 on a side away from the boss. A pressing ring 27 is provided on the side of the pressing ring 26 away from the objective lens 21, the pressing ring 27 is screwed to the inner surface of the first housing 1, and an opening for engaging with a tool such as a screwdriver is provided at the end of the pressing ring 27 away from the objective lens 21. Thus, when the objective lens 21 is housed in the first housing 1, the objective lens 21 can be pressed and fixed by the pressing ring 27 and the pressing ring 26, and the pressing ring 26 is relatively soft, so that the surface of the objective lens 21 can be prevented from being worn.

Referring to fig. 1, an aperture diaphragm 22, a device diaphragm 23, a mounting seat 24 and an infrared thermopile 25 are installed inside the first housing 1 at the end far away from the objective lens 21, a boss for axially limiting the aperture diaphragm 22 is arranged in the first housing 1, the device diaphragm 23 is abutted against the aperture diaphragm 22 after being installed in the first housing 1, the mounting seat 24 is abutted against the device diaphragm 23 after being installed in the first housing 1, and the infrared thermopile 25 can be fixed on the mounting seat 24 in an inserting manner.

In the present application, the device diaphragm 23 and the mounting seat 24 may be in interference fit with the inner wall of the first housing 1 to prevent falling off, or a material such as sponge may be filled between the infrared thermopile 25 and the end of the first housing 1 for fixing. The distances between the objective lens 21, the aperture stop 22, the device stop 23 and the mounting seat 24 can be determined according to actual detection requirements, and are not specifically limited herein.

In an embodiment of the present application, a second housing 5 is coaxially and detachably connected to an end of the first housing 1 away from the objective lens 21, and the signal processing assembly 4 is installed inside the second housing 5, and a person skilled in the art can select an installation manner of the signal processing assembly 4 in the second housing 5 as needed, which is not specifically limited herein. The shape of the second shell 5 is matched with that of the first shell 1, when the cross section of the first shell 1 is circular, the cross section of the second shell 5 is also circular, and the outer diameter of the second shell 5 is the same as that of the first shell 1, so that the outer surface of the infrared temperature measuring device is smooth after the two are connected.

The end part of the second shell 5 close to the first shell 1 is set to be a closed end and is provided with a first wire hole 51, and the first cable 3 can penetrate into the second shell 5 through the first wire hole 51 and is connected with the signal processing assembly 4. After the first cable 3 passes through the first wire hole 51, a sealant may be used to seal a gap between the first cable 3 and the first wire hole 51.

The second housing 5 may be screwed integrally with the first housing 1. Or, the end of the first housing 1 may be inserted into the second housing 5, a countersunk threaded hole may be formed in the side wall of the second housing 5 near the end, and a screw may be disposed in the countersunk threaded hole and abutted against the first housing 1 after being screwed in, thereby realizing connection between the first housing 1 and the second housing 5. When the first housing 1 and the second housing 5 are connected as a whole, the first cable 3 can be accommodated in the gap therebetween.

In this embodiment, the end of the second housing 5 far from the first housing 1 may be provided with a first end cap 52, an outer side wall of the first end cap 52 is provided with an external thread, an inner surface of the second housing 5 near the end is provided with an internal thread, and the first end cap 52 may be screwed into the second housing 5. The second wire hole 521 is opened on the first end cover 52, the output end of the signal processing assembly 4 is connected with the second cable 6, and the second cable 6 can be penetrated out from the second wire hole 521 so as to be connected with external control equipment such as a PLC.

In order to improve the sealing performance of the second housing 5, a sealing gasket 53 may be disposed inside the first end cap 52, the sealing gasket 53 may be axially limited by a boss located on the inner surface of the second housing 5, and the second cable 6 may penetrate through the sealing gasket 53. By the tight fit of the gasket 53 with the second cable 6 and the inner wall of the second housing 5, it is possible to prevent external water or other contaminants from entering the second housing 5 and affecting the signal processing assembly 4.

Referring to fig. 2, in another embodiment of the present application, after the first cable 3 and the second cable 6 are connected to the signal processing module 4, the signal processing module 4 is encapsulated by injection molding. Correspondingly, a second end cover 7 is arranged at one end of the first shell 1 far away from the objective lens 21 for plugging, and the first cable 3 penetrates through the second end cover 7.

In the present application, a separate accommodating space is formed inside the first casing 1 by providing the second casing 5 or the second end cap 7. In order to improve the convenience of assembling the infrared temperature measuring device, the first cable 3 and the second cable 6 can be connected with the signal processing component 4 in a plug mode.

In this application, signal processing subassembly 4 includes the circuit board, is provided with singlechip and signal conversion module on the circuit board. The single chip microcomputer receives and processes the electric signal output by the infrared thermopile 25, and the signal processing module receives and converts the signal output by the single chip microcomputer so as to output a 4-20mA current signal which can be processed by control equipment such as an external PLC and the like.

Referring to fig. 3 and 4, the infrared temperature measuring device provided by the present application further includes a supporting component 8, and the supporting component 8 is connected with the first housing 1. Through setting up supporting component 8, not only make infrared temperature measuring device be convenient for install corresponding position in the factory building, can adjust the position of temperature detection subassembly 2 for being surveyed the target through supporting component 8 moreover.

The supporting component 8 comprises a base 81, the base 81 is flat, a plurality of through holes are formed in four corners of the base 81, and bolts are used for penetrating through the through holes to fix the base 81 on the installation plane.

The base 81 is connected with a first supporting seat 82, and the first supporting seat 82 can rotate around a straight line perpendicular to the base 81 as an axis. Specifically, first supporting seat 82 includes first horizontal plate 821 and first vertical board 822, and the two is mutually perpendicular, and first horizontal plate 821 laminates mutually with base 81, is provided with first through-hole 8211 and first arc hole 8212 on first horizontal plate 821, and first through-hole 8211 is located the centre of a circle of first arc hole 8212. Base 81 is last to be provided with first screw hole 811 corresponding with first through-hole 8211 and the second screw hole 812 that corresponds with first arc hole 8212, can wear to be equipped with first bolt in first through-hole 8211 and the first screw hole 811, can wear to be equipped with the second bolt in first arc hole 8212 and the second screw hole 812. In a state where the first bolt and the second bolt are unscrewed, the first supporting seat 82 may be rotated about an axis of the first bolt, and accordingly, the second bolt slides along the first arc-shaped hole 8212, whereby an angle of the temperature detection assembly 2 with respect to the object to be measured in a lateral direction may be adjusted. When the first supporting seat 82 is rotated to a proper position, the first bolt and the second bolt can be tightened to fix the first supporting seat 82 and the base 81.

One end of the first supporting seat 82, which is far away from the base 81, is connected with a second supporting seat 83, and the second supporting seat 83 can rotate around a straight line parallel to the base 81. Specifically, the second support seat 83 includes a second horizontal plate 831 and a second vertical plate 832, which are perpendicular to each other. The second upright plate 832 is parallel to the first upright plate 822 and is attached to the first upright plate.

The second vertical plate 832 is provided with a second through hole 8321 and a second arc-shaped hole 8322, and the second through hole 8321 is positioned at the center of the second arc-shaped hole 8322. A third threaded hole 8221 corresponding to the second through hole 8321 and a fourth threaded hole 8222 corresponding to the second arc-shaped hole 8322 are formed in the first vertical plate 822, a third bolt penetrates through the second through hole 8321 and the third threaded hole 8221, and a fourth bolt penetrates through the second arc-shaped hole 8322 and the fourth threaded hole 8222. In the case where the third bolt and the fourth bolt are unscrewed, the second support seat 83 may be rotated about the axis of the third bolt, thereby adjusting the pitch angle of the temperature sensing assembly 2 with respect to the object to be sensed. When the third bolt and the fourth bolt are tightened, the second support seat 83 and the first support seat 82 can be fixed.

A side surface of the second horizontal plate 831 far away from the base 81 is detachably provided with a connecting seat 84. Specifically, the connection seat 84 includes a support block 841 disposed on a side surface of the second horizontal plate 831 far away from the base 81, the support block 841 is fixed to the second horizontal plate 831 by a bolt, and an upper surface of the support block 841 abuts against an outer surface of the first housing 1. In order to improve the stability of the support of the first housing 1, the surface of the support block 841 adjacent to the first housing 1 is shaped to match the outer surface of the first housing 1. In this application, when the cross section of the first housing 1 is circular, the surface of the supporting block 841 abutting the first housing 1 is provided in an arc shape.

The supporting block 841 is symmetrically provided with clamping plates 842 along both sides of the length direction of the first housing 1, and the clamping plates 842 are fixedly connected with the side walls of the supporting block 841 through bolts. The ends of the two latch plates 842 remote from the base 81 extend to a position intermediate the two to form a flange 8421. Correspondingly, the sliding groove 11 matched with the two flanges 8421 is formed in the outer surface of the first shell 1 along the length direction, and when the flanges 8421 slide back and forth along the sliding groove 11, the distance between the temperature detection assembly 2 and the detected object can be adjusted to meet the temperature detection requirement.

The application provides an infrared temperature measuring device sets up temperature detect subassembly 2 inside the less first casing of external diameter 1 to set up signal processing subassembly 4 inside second casing 5 or adopt the mode of moulding plastics to encapsulate, showing the volume that has reduced infrared temperature measurement equipment, simplified the structure, the cost is reduced.

Meanwhile, in the present application, the signal processing component 4 adopts a two-wire connection method, and in the using process, due to the difference of the loop power supply voltage and the difference of the load resistance of the temperature measuring device, the calorific value of the signal processing component 4 during signal processing is different, and such difference cannot be predicted, so that the temperature compensation cannot be performed on the signal processing component. And when the signal processing component 4 needs to output different magnitudes of mA current corresponding to different measured temperatures, the amount of heat generated by the signal processing component 4 is also different.

Since the infrared thermopile 25 includes a plurality of thermocouples, two terminals made of different materials of the thermocouples need to be maintained at the same ambient temperature to enable accurate temperature measurement. However, when the signal processing assembly 4 and the infrared thermopile 25 are located in a narrow space at the same time, the temperature field generated by the signal processing assembly 4 will cause a slight temperature difference between the two terminals of the infrared thermopile 25, thereby affecting the accuracy of temperature measurement. For example, according to practical tests, in a shell with an outer diameter of 30mm, when the infrared thermopile 25 and the signal processing assembly 4 are located in the same space, if 4-20mA output by the infrared temperature measuring device corresponds to a temperature range of 0-800 ℃, the maximum error caused by the influence of the temperature field of the signal processing assembly 4 can reach 6-7 ℃, and the measurement accuracy is greatly influenced. Moreover, under the condition of field use, the ambient temperature is changed, and the influence of the ambient temperature on the temperature field generated by the signal processing assembly 4 cannot be predicted, so that the temperature measurement accuracy cannot be ensured.

Therefore, in the present application, the signal processing assembly 4 is disposed outside the first casing 1, and the influence of the temperature field generated by the signal processing assembly 4 on the temperature field around the infrared thermopile 25 is reduced, so as to ensure the accuracy of the temperature detection of the target to be detected.

The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. An infrared temperature measuring device, comprising:

a first casing (1) having a cylindrical shape;

the temperature detection assembly (2) is arranged in the first shell (1) and used for detecting the temperature of a target, one end of the temperature detection assembly (2) faces the detected target to sense infrared rays, one end, away from the detected target, of the temperature detection assembly (2) is connected with a first cable (3), the first cable (3) is led out from one end of the first shell (1), and an independent accommodating space is formed in the first shell (1);

the signal processing assembly (4) is arranged outside the first shell (1) and is used for processing the signal output by the temperature detection assembly (2); the input end of the signal processing component (4) is connected with the temperature detection component (2) through the first cable (3), and the output end of the signal processing component (4) is connected with the second cable (6).

2. The infrared temperature measuring device according to claim 1, wherein the temperature detecting assembly (2) comprises an objective lens (21), an aperture diaphragm (22), a device diaphragm (23), a mounting seat (24) and an infrared thermopile (25) which are sequentially arranged along the axial direction of the first shell (1), and the output end of the infrared thermopile (25) is connected with one end of the first cable (3).

3. The infrared temperature measuring device according to claim 1, further comprising a second housing (5), wherein the second housing (5) is coaxially and detachably connected to the outside of the end of the first housing (1) away from the measured object, the signal processing assembly (4) is disposed in the second housing (5), and the second cable (6) is led out from the end of the second housing (5) away from the first housing (1).

4. The infrared temperature measuring device of claim 1, wherein the signal processing assembly (4) is encapsulated by injection molding.

5. The infrared temperature measuring device according to any one of claims 1 to 4, characterized by further comprising a support assembly (8), wherein the support assembly (8) is connected with the first housing (1) for supporting the first housing (1) and adjusting the orientation of the temperature detection assembly (2) relative to the measured object.

6. The infrared temperature measuring device according to claim 5, characterized in that the supporting component (8) comprises a base (81), a first supporting seat (82) is connected to the base (81), and the first supporting seat (82) can rotate by taking a straight line perpendicular to the base (81) as an axis;

one end of the first supporting seat (82) far away from the base (81) is connected with a second supporting seat (83), the second supporting seat (83) can rotate around a straight line parallel to the base (81), the second supporting seat (83) is provided with a connecting seat (84) in a detachable mode, and the first shell (1) is connected to the connecting seat (84) in a detachable mode.

7. The infrared temperature measuring device of claim 6, characterized in that the first supporting seat (82) comprises a first horizontal plate (821) and a first vertical plate (822) which are arranged perpendicularly to each other, the first horizontal plate (821) being parallel to the base (81);

a first through hole (8211) and a first arc-shaped hole (8212) are formed in the first horizontal plate (821), and the first through hole (8211) is located at the circle center of the first arc-shaped hole (8212);

be provided with first screw hole (811) that correspond with first through-hole (8211) and second screw hole (812) that correspond with first arc hole (8212) on base (81), wear to be equipped with first bolt in first through-hole (8211) and first screw hole (811), wear to be equipped with the second bolt in first arc hole (8212) and second screw hole (812), first supporting seat (82) can use the axis of first bolt as the rotation of axes.

8. The infrared temperature measuring device of claim 7, wherein the second supporting seat (83) comprises a second horizontal plate (831) and a second vertical plate (832) which are perpendicular to each other, the second vertical plate (832) is parallel to the first vertical plate (822) and is attached to the first vertical plate (822), the second horizontal plate (831) is perpendicular to the second vertical plate (832), and the connecting seat (84) is arranged on one side surface of the second horizontal plate (831) far away from the base (81);

a second through hole (8321) and a second arc-shaped hole (8322) are formed in the second vertical plate (832), and the second through hole (8321) is positioned at the circle center of the second arc-shaped hole (8322);

be provided with third screw hole (8221) that correspond with second through-hole (8321) and fourth screw hole (8222) that correspond with second arc hole (8322) on first vertical board (822), wear to be equipped with the third bolt in second through-hole (8321) and third screw hole (8221), wear to be equipped with the fourth bolt in second arc hole (8322) and fourth screw hole (8222), second supporting seat (83) can use the axis of third bolt as the rotation of axes.

9. The infrared temperature measuring device of claim 8, wherein the connecting base (84) comprises a supporting block (841) fixedly arranged on one side surface of the second horizontal plate (831) far away from the base (81), the supporting block (841) is symmetrically provided with clamping plates (842) along two sides of the first shell (1) in the length direction, and one ends of the two clamping plates (842) far away from the base (81) extend to the middle position of the two clamping plates to form a flange (8421);

the outer surface of the first shell (1) is provided with a sliding groove (11) matched with the flange (8421), and the distance between the temperature detection assembly (2) and a detected object can be adjusted when the flange (8421) slides in the sliding groove (11).

10. The infrared temperature measuring device of claim 9, wherein the shape of the surface of the support block (841) near the first housing (1) matches the shape of the outer surface of the first housing (1).

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