Pumping drainage device, temperature measuring and sampling gun and temperature measuring and sampling system

Abstract

The utility model provides a pump drainage device, temperature measurement sampling gun and temperature measurement sampling system, including high-speed flow path, low-speed flow path and connecting pipe, connecting pipe has first pipe cavity and second pipe cavity, first pipe cavity and second pipe cavity are communicated, second pipe cavity is located in high-speed flow path, first pipe cavity is communicated with low-speed flow path, and second pipe cavity is located in high-speed flow path. The connecting pipe is further provided with a discharging opening, and the discharging opening is communicated with the second pipe cavity. The utility model can overcome the problem that the temperature measuring and sampling gun is oxidized and seriously deformed due to high temperature in the electric furnace steel-making furnace, so that the temperature measuring and sampling operation cannot be finished.

Description

Technical Field

[0001] The utility model relates to the technical field of electric furnace metallurgy temperature measurement, in particular to a pumping device, a temperature measurement sampling gun and a temperature measurement sampling system. Background Art

[0002] Green energy conservation and emission reduction has become one of the most important scientific and technological innovation tasks for the development of the steel industry. Compared with the long-process steelmaking process, the short-process steelmaking process with electric furnace steelmaking as the core has greatly reduced the consumption of resources per ton of steel, project investment, land area, pollutants such as nitrogen oxides and sulfur oxides, and carbon dioxide emissions. Electric furnace steelmaking has become the main low-carbon steelmaking path.

[0003] In the process of electric furnace steelmaking, in order to master the chemical composition and temperature of molten steel and ensure the normal smelting process, the temperature measurement and sampling of molten steel has always been one of the important links that restrict the production efficiency and power consumption of electric arc furnaces. During the smelting process, temperature measurement and sampling can quickly provide the chemical composition and temperature of molten steel, which is more conducive to achieving the chemical composition and temperature at the end of smelting; at the end of smelting, temperature measurement and sampling can quickly provide data such as the chemical composition, temperature, carbon content and oxygen activity of molten steel, which is conducive to smelting high-quality steel, and can reduce energy consumption and costs while improving the output and quality of steel.

[0004] At present, most domestic electric arc furnace steelmaking enterprises still use the traditional manual sampling and temperature measurement method. This operation mode not only faces dangerous and harsh environments such as high temperature, high splash, and high dust, but also in order to protect the safety of operators, the electric furnace needs to be shut down for 2 to 3 minutes when taking temperature samples. At least 18,000 power outages a year will have a great impact on the production rhythm and stability of the furnace condition of the electric furnace; and it is difficult to avoid a series of problems such as low operation stability and inconsistent measurement accuracy caused by different levels of manual operation. There are great safety hazards and time waste, which seriously restrict the production efficiency and stability of the electric furnace.

[0005] Based on this, a temperature measuring and sampling device for automatic temperature measurement and sampling in molten steel has been developed in the prior art. Although this temperature measuring and sampling device can realize automatic temperature measurement and sampling of molten steel, the heat source of electric arc furnace steelmaking comes from the electric arc, with a temperature as high as 4000-6000°C, and directly acts on the charge, so the thermal efficiency is relatively high, and now has reached more than 70%. During the smelting process, the temperature of the molten steel can be flexibly increased, and high-alloy steel containing refractory elements such as tungsten and platinum can be easily smelted. For sampling and temperature measurement, a special temperature measuring and sampling device is used, which is inserted about 300mm below the molten steel surface along the lower corner of the furnace door. The high temperature in the furnace can easily cause the temperature measuring and sampling gun to oxidize and severely deform, resulting in the inability to complete the temperature measuring and sampling operation.

[0006] Therefore, it is necessary to develop an extraction device, a temperature measuring sampling gun and a temperature measuring sampling system to overcome the problem that the high temperature in the electric furnace steelmaking furnace causes the temperature measuring sampling gun to oxidize and severely deform, resulting in the inability to complete the temperature measuring sampling operation. Utility Model Content

[0007] The utility model aims to provide an extraction device, a temperature measuring sampling gun and a temperature measuring sampling system to solve the problem that the existing extraction device, the temperature measuring sampling gun and the temperature measuring sampling system are easily oxidized and deformed under the influence of the high temperature of the electric furnace, resulting in the inability to complete the sampling operation.

[0008] In order to solve the above technical problems, the utility model provides a pumping device, including a high-speed flow path, a low-speed flow path and a connecting pipe, the connecting pipe has a first tube cavity and a second tube cavity, the first tube cavity is connected to the second tube cavity, and the second tube cavity is located on the high-speed flow path, the first tube cavity is connected to the low-speed flow path, and the connecting pipe also has a discharge port, and the discharge port is connected to the second tube cavity.

[0009] Optionally, the connecting tube includes an inner tube and a flow guide tube, a first window is opened on the tube wall of the inner tube, the flow guide tube is sleeved on the inner tube, and the first window is located in the tube cavity of the flow guide tube, the second tube cavity is located in the gap between the flow guide tube and the inner tube, and the first tube cavity is located in the tube cavity of the inner tube.

[0010] Optionally, the connecting tube also includes an outer tube and a drainage tube, the outer tube is sleeved on the inner tube, a second window is opened on the outer tube, the drainage tube is sleeved on the outer tube and the second window is located in the lumen of the drainage tube, the drainage tube extends from the first window to the second window, the gap between the outer tube and one side of the inner tube is blocked, the outer tube is connected to the lumen of the drainage tube through a nozzle opened on the outer tube, and the second lumen is located in the gap between the drainage tube and the outer tube.

[0011] Optionally, the gap between the guide tube and one side of the outer tube is blocked, and the blocked side of the guide tube and the blocked side of the outer tube are located on the same side of the second window, and the nozzle is located on the blocked side of the guide tube.

[0012] The utility model also provides a temperature measuring sampling gun, comprising a structural tube and a sampling head, wherein the structural tube is connected to the sampling head through the above-mentioned exhaust device, the structural tube comprises an inner structural tube and an outer structural tube, the outer structural tube is sleeved on the inner structural tube, the inner structural tube is connected to one end of the inner tube, the outer structural tube is connected to the outer tube, and the other end of the inner tube is connected to the tube cavity of the sampling head.

[0013] Optionally, the nozzle is arranged close to the sampling head.

[0014] Optionally, the temperature measuring sampling gun also includes a base section, which includes a core tube and a sleeve, the sleeve is sleeved on the core tube, one end of the core tube is connected to the atmosphere and the other end is connected to the inner structure tube, one end of the sleeve is connected to the outer structure tube, the other end of the sleeve is sealed, and an air inlet connected to a compressed air source is opened on the tube wall of the sleeve.

[0015] Optionally, it also includes a mounting seat and a spring, wherein the mounting seat is sleeved on the core tube and is slidably connected to the core tube, and one end of the spring is connected to the mounting seat and the other end is connected to the sleeve.

[0016] The utility model also provides a temperature measurement sampling system, comprising a driving mechanism and the temperature measurement sampling gun, wherein the driving mechanism is used to drive the mounting seat to move.

[0017] Optionally, the driving mechanism includes a supporting base and a supporting swing arm, the supporting swing arm and the supporting base are rotatably connected, and the temperature measuring sampling gun is connected to the supporting swing arm.

[0018] The utility model provides a pumping device, a temperature measuring sampling gun and a temperature measuring sampling system, which have the following features:

[0019] Beneficial effects:

[0020] Since the connecting tube has a first tube cavity and a second tube cavity, the first tube cavity is connected to the second tube cavity, and the second tube cavity is located on the high-speed flow path, the first tube cavity is connected to the low-speed flow path, and the connecting tube also has a discharge port, and the discharge port is connected to the second tube cavity. Therefore, according to Bernoulli's principle, the medium in the low-speed flow path can enter the first tube cavity and then the second tube cavity under the action of the high-speed flow path, and then enter the discharge port and be discharged from the discharge port. In this way, the effect of drawing out and pumping out the medium in the low-speed flow path through the high-speed medium in the high-speed flow path can be achieved, thereby quickly cooling the low-speed flow path and avoiding the problem that the pumping device cannot complete the sampling operation due to oxidation and deformation under the influence of the high temperature of the electric furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an electric furnace and a temperature measurement and sampling system in an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a temperature measurement and sampling system in an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a temperature measuring sampling gun in an embodiment of the utility model;

[0024] Figure 4It is a structural schematic diagram of the temperature measuring sampling gun after the shell is removed in the embodiment of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the extraction device of the temperature measuring sampling gun in the embodiment of the utility model;

[0026] Figure 6 yes Figure 5 The cross-sectional view of the extraction device of the temperature measuring sampling gun along the BB line;

[0027] Figure 7 yes Figure 6 The cross-sectional view of the extraction device of the temperature measuring sampling gun along the DD line;

[0028] Figure 8 yes Figure 6 Sectional view of the extraction device of the temperature measuring sampling gun along line EE;

[0029] Fig. 9 It is a cross-sectional view of the extraction device of the temperature measuring sampling gun in the embodiment of the utility model;

[0030] Fig.10 It is a cross-sectional view of the base section of the temperature measuring sampling gun in the embodiment of the utility model;

[0031] Fig.11 It is a cross-sectional view of the base section of the temperature measuring sampling gun in the embodiment of the utility model;

[0032] Fig.12 It is a partial structural schematic diagram of the temperature measuring sampling gun in the embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 100-exhaust device; 110-inner pipe; 120-flow guide pipe; 130-outer pipe; 132-nozzle; 140-flow guide pipe; 170-discharge port;

[0035] 200-temperature measuring sampling gun; 210-structure tube; 211-inner structure tube; 212-outer structure tube; 220-sampling head; 230-base section; 231-core tube; 232-casing tube; 240-mounting seat; 250-spring;

[0036] 300-driving mechanism; 310-supporting base; 320-supporting swing arm; 371-crank; 372-connecting rod; 373-connecting rod; 374-safety cover. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 , Figure 1 It is a structural schematic diagram of an electric furnace and a temperature measurement and sampling system in an embodiment of the utility model. Figure 2 It is a structural schematic diagram of the temperature measurement and sampling system in the embodiment of the utility model. Figure 3 2 is a schematic diagram of the structure of the temperature measuring sampling gun 200 in the embodiment of the utility model. Figure 4 2 is a schematic diagram of the structure of the temperature measuring sampling gun 200 after the shell is removed in the embodiment of the utility model. Figure 5 1 is a schematic diagram of the structure of the extraction device 100 of the temperature measuring sampling gun 200 in the embodiment of the utility model. Figure 6 yes Figure 5 A cross-sectional view of the extraction device 100 of the temperature measuring sampling gun 200 along line BB, Figure 7 yes Figure 6 A cross-sectional view of the extraction device 100 of the temperature measuring sampling gun 200 along the DD line, Figure 8 yes Figure 6 A cross-sectional view of the extraction device 100 of the temperature measuring sampling gun 200 along line EE, Fig. 9 2 is a cross-sectional view of the extraction device 100 of the temperature measuring sampling gun 200 in the embodiment of the utility model. Fig.10 2 is a cross-sectional view of the base section 230 of the temperature measuring sampling gun 200 in the embodiment of the utility model. Fig.11 It is a cross-sectional view of the base section 230 of the temperature measuring sampling gun 200 in an embodiment of the utility model. This embodiment provides an exhaust device 100, including a high-speed flow path, a low-speed flow path and a connecting pipe. The connecting pipe has a first lumen and a second lumen. The first lumen is connected to the second lumen, and the second lumen is located on the high-speed flow path. The first lumen is connected to the low-speed flow path. The connecting pipe also has an exhaust port 170, and the exhaust port 170 is connected to the second lumen.

[0044] Since the connecting tube has a first tube cavity and a second tube cavity, the first tube cavity is connected to the second tube cavity, and the second tube cavity is located on the high-speed flow path, the first tube cavity is connected to the low-speed flow path, and the connecting tube also has a discharge port 170, and the discharge port 170 is connected to the second tube cavity. Therefore, according to Bernoulli's principle, the medium in the low-speed flow path can enter the first tube cavity and then the second tube cavity under the action of the high-speed flow path, and then enter the discharge port 170 and be discharged from the discharge port 170. In this way, the effect of drawing out and exhausting the medium in the low-speed flow path through the high-speed medium in the high-speed flow path can be achieved, thereby quickly cooling the low-speed flow path, avoiding the problem that the exhaust device 100 cannot complete the sampling operation due to oxidation and deformation under the influence of the high temperature of the electric furnace.

[0045] refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The connecting tube includes an inner tube 110 and a flow guide tube 120, a first window is opened on the tube wall of the inner tube 110, the flow guide tube 120 is sleeved on the inner tube 110, and the first window is located in the tube cavity of the flow guide tube 120, the second tube cavity is located in the gap between the flow guide tube 120 and the inner tube 110, and the first tube cavity is located in the tube cavity of the inner tube 110.

[0046] refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9The connecting tube further comprises an outer tube 130 and a drainage tube 140, the outer tube 130 is sleeved on the inner tube 110, a second window is provided on the outer tube 130, the drainage tube 120 is sleeved on the outer tube 130 and the second window is located in the lumen of the drainage tube 120, the drainage tube 140 extends from the first window to the second window, the gap between the outer tube 130 and one side of the inner tube 110 is blocked, the outer tube 130 is communicated with the lumen of the drainage tube 120 through a nozzle 132 provided on the outer tube 130, and the second lumen is located in the gap between the drainage tube 120 and the outer tube 130. In this way, the high-speed medium in the high-speed flow path can flow in the second tube cavity, specifically, flow through the gap between the inner tube 110 and the outer tube 130, flow through the nozzle 132, and then flow through the gap between the outer tube 130 and the guide tube 120. Since the guide tube 140 connects the first tube cavity and the tube cavity of the guide tube 120, that is, the tube cavity of the inner tube 110 and the tube cavity of the guide tube 120, the high-speed medium in the second tube cavity can be pumped out of the medium in the first tube cavity by the Bernoulli principle. Since the outer tube 130 is sleeved on the inner tube 110, the inner tube 110 can be cooled by the high-speed gas between the outer tube 130 and the inner tube 110, further preventing the pumping device 100 from being oxidized and deformed under the influence of the high temperature of the electric furnace.

[0047] The gap between the guide tube 120 and one side of the outer tube 130 is blocked, and the blocked side of the guide tube 120 and the blocked side of the outer tube 130 are located on the same side of the second window, and the nozzle 132 is located on the blocked side of the guide tube 120 .

[0048] refer to Figure 8 The number of the nozzles 132 is multiple, and the multiple nozzles 132 are evenly arranged around the axis of the outer tube 130.

[0049] refer to Figure 3 , Figure 4 , Fig.10 and Fig.11 This embodiment also provides a temperature measurement sampling gun 200, including a structural tube 210 and a sampling head 220, the structural tube 210 and the sampling head 220 are connected through the above-mentioned exhaust device 100, the structural tube 210 includes an inner structural tube 211 and an outer structural tube 212, the outer structural tube 212 is sleeved on the inner structural tube 211, the inner structural tube 211 is connected to one end of the inner tube 110, the outer structural tube 212 is connected to the outer tube 130, and the other end of the inner tube 110 is connected to the tube cavity of the sampling head 220.

[0050] In this embodiment, the nozzle 132 is disposed close to the sampling head 220 , so that the exhaust port 170 can exhaust in a direction away from the sampling head 220 .

[0051] refer to Fig.10 and Fig.11 The temperature measuring sampling gun 200 also includes a base section 230, and the base section 230 includes a core tube 231 and a sleeve 232. The sleeve 232 is sleeved on the core tube 231. One end of the core tube 231 is connected to the atmosphere and the other end is connected to the inner structure tube 211. One end of the sleeve 232 is connected to the outer structure tube 212. The other end of the sleeve 232 is blocked. An air inlet connected to a compressed air source is opened on the tube wall of the sleeve 232.

[0052] refer to Fig.12 , Fig.12 It is a partial structural diagram of the temperature measuring sampling gun 200 in the embodiment of the utility model. The temperature measuring sampling gun 200 also includes a mounting seat 240 and a spring 250. The mounting seat 240 is sleeved on the core tube 231 and is slidably connected to the core tube 231. One end of the spring 250 is connected to the mounting seat 240 and the other end is connected to the sleeve 232. In this way, when the sampling head 220 is impacted and the force is transmitted to the structural tube 210 and the base section 230 in turn, the base section 230 moves backward relative to the mounting seat 240 under the action of the spring 250. In this way, when the temperature measuring sampling gun 200 is inserted into the molten steel in an oblique downward direction, even if it encounters hard steel slag, solid scrap steel, etc. in the molten steel, it will not cause damage to the sampling head 220.

[0053] refer to Figure 1 and Figure 2 This embodiment also provides a temperature measurement sampling system, including a driving mechanism and the temperature measurement sampling gun 200 in the above embodiment, wherein the driving mechanism is used to drive the mounting seat 240 to move.

[0054] The driving mechanism includes a supporting base 310 and a supporting swing arm 320 . The supporting swing arm 320 is rotatably connected to the supporting base 310 , and the temperature measuring sampling gun 200 is connected to the supporting swing arm 320 .

[0055] The driving mechanism further includes a motor and a gear. The support swing arm 320 is fixed to the support base 310 through a slewing bearing. A gear ring is fixed to the outer ring of the slewing bearing. The gear and the gear ring are meshed, and the motor drives the gear to rotate. In this way, the motor drives the gear to rotate, thereby driving the gear ring to rotate, and then driving the slewing bearing to rotate, and then driving the support swing arm 320 to rotate, so that the temperature measurement sampling gun 200 can be driven to rotate.

[0056] The driving mechanism also includes a crank 371, a connecting rod 372 and a connecting rod 373. One end of the crank 371 is rotatably connected to the support swing arm 320, one end of the connecting rod 372 is connected to the other end of the crank 371, the other end of the connecting rod 372 is connected to one end of the connecting rod 373, the other end of the connecting rod 373 is rotatably connected to the support swing arm 320, and the connecting rod 373 is connected to the temperature measuring sampling gun 200. In this way, the crank 371 can be used to drive the connecting rod 372 to move, thereby driving the connecting rod 373 to swing, so as to drive the temperature measuring sampling gun 200 to swing. In this way, after the temperature measuring sampling gun 200 completes the temperature measuring sampling operation and returns to the standby state, the temperature measuring sampling gun 200 and the support swing arm 320 are folded together to reduce the space occupied by the temperature measuring sampling gun 200 in the standby state.

[0057] The driving mechanism further comprises a safety cover 374, which is mounted on the supporting base 310 and covers the motor, gears and gear rings, thereby providing heat insulation and dustproofing to prevent accidents.

[0058] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A pumping device, characterized in that: It includes a high-speed flow path, a low-speed flow path and a connecting tube, the connecting tube has a first tube cavity and a second tube cavity, the first tube cavity is connected to the second tube cavity, and the second tube cavity is located on the high-speed flow path, the first tube cavity is connected to the low-speed flow path, and the connecting tube also has a discharge port, and the discharge port is connected to the second tube cavity.

2. The extraction device according to claim 1, characterized in that: The connecting tube includes an inner tube and a flow guide tube, a first window is opened on the tube wall of the inner tube, the flow guide tube is sleeved on the inner tube, and the first window is located in the tube cavity of the flow guide tube, the second tube cavity is located in the gap between the flow guide tube and the inner tube, and the first tube cavity is located in the tube cavity of the inner tube.

3. The extraction device according to claim 2, characterized in that: The connecting tube also includes an outer tube and a drainage tube, the outer tube is sleeved on the inner tube, a second window is opened on the outer tube, the drainage tube is sleeved on the outer tube and the second window is located in the lumen of the drainage tube, the drainage tube extends from the first window to the second window, the gap between the outer tube and one side of the inner tube is blocked, the outer tube is connected with the lumen of the drainage tube through a nozzle opened on the outer tube, and the second lumen is located in the gap between the drainage tube and the outer tube.

4. The extraction device according to claim 3, characterized in that: The gap between the guide tube and one side of the outer tube is blocked, and the blocked side of the guide tube and the blocked side of the outer tube are located on the same side of the second window, and the nozzle is located on the blocked side of the guide tube.

5. A temperature measuring sampling gun, characterized in that: It includes a structural tube and a sampling head, wherein the structural tube is connected to the sampling head through the exhaust device as described in claim 3, the structural tube includes an inner structural tube and an outer structural tube, the outer structural tube is sleeved on the inner structural tube, the inner structural tube is connected to one end of the inner tube, the outer structural tube is connected to the outer tube, and the other end of the inner tube is connected to the tube cavity of the sampling head.

6. The temperature measuring sampling gun according to claim 5, characterized in that: The nozzle is arranged close to the sampling head.

7. The temperature measuring sampling gun according to claim 5, characterized in that: The temperature measuring sampling gun also includes a base section, which includes a core tube and a sleeve, the sleeve is sleeved on the core tube, one end of the core tube is connected to the atmosphere and the other end is connected to the inner structure tube, one end of the sleeve is connected to the outer structure tube, the other end of the sleeve is blocked, and an air inlet connected to a compressed air source is opened on the tube wall of the sleeve.

8. The temperature measuring sampling gun according to claim 7, characterized in that: It also includes a mounting seat and a spring. The mounting seat is sleeved on the core tube and is slidably connected to the core tube. One end of the spring is connected to the mounting seat and the other end is connected to the sleeve.

9. A temperature measurement sampling system, characterized in that: It comprises a driving mechanism and the temperature measuring sampling gun as claimed in claim 8, wherein the driving mechanism is used to drive the mounting seat to move.

10. The temperature measurement and sampling system according to claim 9, characterized in that: The driving mechanism comprises a supporting base and a supporting swing arm, the supporting swing arm is rotatably connected to the supporting base, and the temperature measuring sampling gun is connected to the supporting swing arm.

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