Air tightness detection device for new material drier production

Abstract

The invention discloses an air tightness detection device for new material drier production, and relates to the technical field of air tightness detection, and the air tightness detection device comprises a detection gun and an air leakage detection assembly. In the using process, the circuit board is arranged at the side end of the equipment bin, the trigger button arranged on the edge of the side, close to the driven toothed plate, of the circuit board serves as an independent normally-open switch to form an independent circuit with the corresponding three-color lamp, and in the moving process of the driven toothed plate, the elastic pieces at the side end of the driven toothed plate sequentially trigger the trigger buttons at the corresponding positions; when the detection gun is used, a user only needs to judge the lighting condition of the three-color lamp so as to directly judge the gas leakage condition of the current detection part, so that the gas leakage condition in the reaction kettle can be judged according to the lighting condition of the corresponding three-color lamp after the circuit is closed. The defect that a user only observes the deflection angle of the airtight plate and then judges the air leakage condition according to experience is overcome, the detection gun is easier to operate, and the test result is more accurate and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of airtightness detection, and particularly to an airtightness detection device for the production of a new material dryer catalyst. Background Technique

[0002] A reaction kettle is a commonly used pressure vessel in chemical production, which can be used for physical mixing and chemical reactions. In the production process of the new material dryer catalyst, the main metal soap component of the dryer catalyst can be synthesized through reactions such as esterification and saponification in the reaction kettle.

[0003] In reactions involving gas participation or gas generation, the container needs to be kept airtight to prevent poisoning and pollution accidents caused by gas leakage. Therefore, generally, the reaction kettle needs to be pressure-tested before the reaction to check its airtightness. However, to ensure that the pressure test results can truthfully reflect the airtightness of the reaction kettle, the pressure test process usually needs to last for a long time, generally several hours. If the reaction kettle has a large volume, it may take even longer. Enterprises need to spend a high time cost during production. Some enterprises, in order to improve production capacity, have to build multiple reaction kettles for rotation, incurring high construction, maintenance, and overhaul costs. Summary of the Invention

[0004] The purpose of the present invention is to provide an airtightness detection device for the production of a new material dryer catalyst to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An airtightness detection device for the production of a new material dryer catalyst, including a detection gun and a leakage detection component. The detection gun internally has a measurement pipeline with both ends open. The leakage detection component is arranged at the top of the detection gun. The leakage detection component includes a bearing seat fixed to the inner wall of the top end of the measurement pipeline. A torsion rotating shaft is rotatably installed inside the bearing seat, and airtight plates are coaxially connected to both ends of the torsion rotating shaft. The airtight plates are elastically connected to the adjacent side walls of the bearing seat through torsion springs, and the windward surface of the airtight plates is perpendicular to the axis of the measurement pipeline. A driving gear is coaxially connected to the middle of the torsion rotating shaft, and a driven toothed plate is arranged above the driving gear. The outer edge teeth of the driving gear mesh with the driven toothed plate above, and a spring piece is fixedly connected to the side wall of the driven toothed plate.

[0006] Further, the rear end opening of the detection gun is provided with an exhaust port, and a sealing cap is fixed to the external thread of the exhaust port. The middle of the bottom of the detection gun is fixed with a handle, and a finger-catching groove matching with the fingers is arranged on the inclined surface of the handle.

[0007] Further, an equipment compartment is opened at the side end of the top of the detection gun, and a cover plate is fixed to the equipment compartment with bolts.

[0008] Further, a circuit board is fixed inside the device bin by bolts, and three trigger buttons are provided at one edge of the circuit board.

[0009] Further, a power module is arranged in the middle of the circuit board, and a three-color light is arranged on the other side of the circuit board. The trigger button forms an independent circuit with the corresponding three-color light as an independent normally open switch. When the trigger button is sequentially triggered by the side elastic piece during the movement of the driven tooth plate, the circuit is closed and the corresponding three-color light is turned on.

[0010] Further, a linkage marking component is arranged inside the device bin. The linkage marking component includes a cylinder arranged along the moving direction of the driven tooth plate. A one-way liquid inlet pipe is connected to the top of the cylinder, and a fluorescent agent bottle is threadedly connected above the one-way liquid inlet pipe.

[0011] Further, the linkage marking component further includes a piston rod located at the rear end of the cylinder. The part of the piston rod protruding outside the cylinder is flush with the three-color light at the end of the moving stroke of the driven tooth plate, and a return spring is sleeved on the part of the piston rod outside the cylinder.

[0012] Further, the linkage marking component further includes a liquid outlet pipe located at the front end of the cylinder. The liquid outlet pipe is externally connected with an annular spray pipe, and the annular spray pipe surrounds the outer edge of the front end opening of the detection gun.

[0013] Further, a quick-change component is connected to the front end opening of the detection gun. The quick-change component includes a gooseneck tube movably connected to the front end opening of the detection gun. A circular probe is arranged at the end of the gooseneck tube, and a fixed frame is fixed outside the circular probe, and side grooves are opened on both sides of the fixed frame.

[0014] Further, the quick-change component further includes a movable frame rotatably connected to the end of the gooseneck tube. The pin shafts on both sides of the movable frame are matched with the side grooves provided on both sides of the fixed frame, and a flat probe is arranged inside the movable frame, and the flat probe is sleeved outside the circular probe.

[0015] The present invention provides an airtightness detection device for the production of a new material dryer, and has the following beneficial effects;

[0016] 1. During the use of the present invention, a circuit board is provided at the side end of the equipment chamber. The trigger button provided on the circuit board near one side edge of the driven gear plate serves as an independent normally open switch and forms an independent circuit with the corresponding three-color lamp. During the movement of the driven gear plate, the side-end elastic piece thereof sequentially triggers the trigger buttons at corresponding positions. Then, it is possible to judge whether the air leakage situation in the reactor at this time is within the threshold by the lighting condition of the corresponding three-color lamp after the circuit is closed. During the use of the detection gun of the present application, the user only needs to judge the lighting condition of the three-color lamp to make an intuitive judgment on the air leakage situation of the current detection part, solving the deficiency that the user only judges the air leakage situation by observing the deflection angle of the airtight plate and relying on experience, making the operation of the detection gun of the present application more simple and the test result more accurate and reliable.

[0017] 2. During the use of the present invention, if the air leakage situation of the current detection part is relatively serious and exceeds the design threshold, the fluorescent agent injected into the cylinder through the one-way liquid inlet pipe is supplied to the annular nozzle surrounding the front-end opening of the detection gun through the liquid outlet pipe, and then the fluorescent agent is sprayed on the leakage position on the reactor to play a marking role. The present application designs the air leakage detection and the fluorescent marking process in a linkage manner, and synchronously marks the leakage position of the reactor when a leakage is found, which is convenient for subsequent precise manual repair, and the linkage between the structures of the device is strong.

[0018] 3. During the use of the present invention, an appropriate probe type can be selected according to the detection requirements, which can minimize the problem of environmental air flow interference caused by the mismatch between the probe shape and the reactor interface. In addition, the structural feature that the gooseneck tube can be bent arbitrarily and maintain its direction can further meet the use requirements of the elbow probe, enabling the detection gun of the present application to better adapt to the complex interface shapes of different parts of the reactor, and having stronger applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the overall external view of the device of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the overall external view II of the device of the present invention;

[0021] Figure 3 It is a schematic sectional structural diagram of the overall device of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the quick-change component of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the air leakage detection component of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the equipment chamber of the present invention;

[0025] Figure 7Schematic diagram of the linkage marking component structure of the present invention.

[0026] In the figure: 1, detection gun; 2, measurement pipeline; 3, air leakage detection component; 301, bearing seat; 302, torsion rotating shaft; 303, airtight plate; 304, driving gear; 305, driven tooth plate; 306, elastic sheet; 4, exhaust port; 5, grip; 6, equipment bin; 7, cover plate; 8, circuit board; 9, trigger button; 10, power module; 11, three-color lamp; 12, linkage marking component; 1201, cylinder block; 1202, one-way liquid inlet pipe; 1203, fluorescent agent bottle; 1204, piston rod; 1205, return spring; 1206, liquid outlet pipe; 1207, annular nozzle; 13, quick-change component; 1301, gooseneck tube; 1302, round probe; 1303, fixed frame; 1304, side groove; 1305, movable frame; 1306, flat probe. Specific embodiments

[0027] The following further describes in detail the embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0028] Please refer to Figures 5 to 6 , the present invention provides a technical solution: an airtightness detection device for the production of a new material dryer, including a detection gun 1 and an air leakage detection component 3. The detection gun 1 is internally provided with a measurement pipeline 2 with both ends open. The air leakage detection component 3 is arranged at the top end of the detection gun 1. The air leakage detection component 3 includes a bearing seat 301 fixed to the inner wall of the top end of the measurement pipeline 2. A torsion rotating shaft 302 is rotatably installed inside the bearing seat 301. Both ends of the torsion rotating shaft 302 are coaxially connected with an airtight plate 303. The airtight plate 303 is elastically connected to the adjacent side wall of the bearing seat 301 through a torsion spring. The windward surface of the airtight plate 303 is perpendicular to the axis of the measurement pipeline 2. The middle of the torsion rotating shaft 302 is coaxially connected with a driving gear 304. A driven tooth plate 305 is arranged above the driving gear 304. The outer edge teeth of the driving gear 304 are engaged with the driven tooth plate 305 above. A elastic sheet 306 is fixedly connected to the side wall of the driven tooth plate 305. The rear end opening of the detection gun 1 is provided with an exhaust port 4. A sealing cap is fixed to the external thread of the exhaust port 4. The middle of the bottom of the detection gun 1 is fixedly provided with a grip 5. A finger-matching buckle groove is arranged on the inclined surface of the grip 5. The side end of the top of the detection gun 1 is provided with an equipment bin 6. A cover plate 7 is bolted to the equipment bin 6. A circuit board 8 is bolted inside the equipment bin 6. Three trigger buttons 9 are arranged at one side edge of the circuit board 8. A power module 10 is arranged in the middle of the circuit board 8. A three-color lamp 11 is arranged on the other side of the circuit board 8. The trigger button 9 serves as an independent normally open switch to form an independent circuit with the corresponding three-color lamp 11. When the trigger button 9 is sequentially triggered by the elastic sheet 306 at its side end during the movement of the driven tooth plate 305, the circuit is closed and the corresponding three-color lamp 11 lights up;

[0029] The specific operation is as follows. Move the probe part of the detection gun 1 along the gap of the detection part of the reaction kettle. When there is an air leakage at the detection part, the compressed air in the reaction kettle enters the inside of the measurement pipeline 2 through the gap, and then drives the airtight plate 303 with the windward surface perpendicular to the pipeline axis in the measurement pipeline 2 to deflect. The deflection of the airtight plate 303 then drives the coaxial drive gear 304 inside the bearing seat 301 to rotate through the torsion rotating shaft 302. Through the meshing transmission between the outer teeth of the drive gear 304 and the upper driven tooth plate 305, the driven tooth plate 305 is further displaced within the reserved track in the equipment bin 6. In this application, a circuit board 8 is provided at the side end of the equipment bin 6. The trigger button 9 provided at the edge of the circuit board 8 adjacent to the driven tooth plate 305 serves as an independent normally open switch and forms an independent circuit with the corresponding three-color lamp 11. During the movement of the driven tooth plate 305, the side-end elastic piece 306 thereof sequentially triggers the trigger button 9 at the corresponding position. Then, it is possible to judge whether the air leakage in the reaction kettle at this time is within the threshold by the lighting condition of the corresponding three-color lamp 11 after the circuit is closed. During the use of the detection gun 1 in this application, the user only needs to judge the lighting condition of the three-color lamp 11 to directly judge the air leakage condition of the current detection part, solving the deficiency that the user only judges the air leakage condition by observing the deflection angle of the airtight plate 303 and relying on experience, making the operation of the detection gun 1 in this application more concise and the test result more accurate and reliable;

[0030] Please refer to Figure 7 , a linkage marking component 12 is arranged inside the equipment bin 6. The linkage marking component 12 includes a cylinder body 1201 arranged along the moving direction of the driven tooth plate 305. A one-way liquid inlet pipe 1202 is connected to the top of the cylinder body 1201, and a fluorescent agent bottle 1203 is threadedly connected above the one-way liquid inlet pipe 1202. The linkage marking component 12 further includes a piston rod 1204 located at the rear end of the cylinder body 1201. The part of the piston rod 1204 protruding outside the cylinder body 1201 is flush with the three-color lamp 11 at the end of the moving stroke of the driven tooth plate 305, and a return spring 1205 is sleeved on the part of the piston rod 1204 outside the cylinder body 1201. The linkage marking component 12 further includes a liquid outlet pipe 1206 located at the front end of the cylinder body 1201. The liquid outlet pipe 1206 is externally connected with an annular spray pipe 1207, and the annular spray pipe 1207 surrounds the outer edge of the front-end opening of the detection gun 1;

[0031] The specific operation is as follows: if the leakage at the current detection part is more serious and exceeds the design threshold, the driven gear plate 305 is now close to the end of the stroke, not only will the three-color light 11 at the end light up to sound an alarm through the triggering of the spring piece 306, but the driven gear plate 305 will also abut and apply pressure to the piston rod 1204 outside the cylinder body 1201, and as the piston rod 1204 moves along the axis of the cylinder body 1201, the fluorescent agent injected into the cylinder body 1201 through the one-way liquid inlet pipe 1202 is supplied to the annular nozzle 1207 surrounding the front end opening of the detection gun 1 through the liquid outlet pipe 1206, and then the fluorescent agent is sprayed on the leakage position on the reactor to play a marking role. The present application links the leakage detection and fluorescent marking processes, and simultaneously marks the leakage position of the reactor when a leak is found, which is convenient for subsequent manual precision maintenance, and the linkage between the various structures of the device is strong;

[0032] See also Figures 1 to 4 The front end opening of the detection gun 1 is connected to a quick-change assembly 13, and the quick-change assembly 13 includes a gooseneck tube 1301 movably connected to the front end opening of the detection gun 1, a circular probe 1302 is provided at the end of the gooseneck tube 1301, and a fixed frame 1303 is fixed to the outside of the circular probe 1302, and side grooves 1304 are provided on both sides of the fixed frame 1303. The quick-change assembly 13 also includes a movable frame 1305 rotatably connected to the end of the gooseneck tube 1301, and the pins on both sides of the movable frame 1305 cooperate with the side grooves 1304 provided on both sides of the fixed frame 1303, and a flat probe 1306 is provided inside the movable frame 1305, and the flat probe 1306 is sleeved on the outside of the circular probe 1302;

[0033] The specific operation is as follows: after the pressure test of the reactor begins, all valves and openings of the reactor are closed, and compressed air or nitrogen is filled into the reactor to keep the reactor at a state higher than the working pressure. The user holds the detection gun 1 and selects a suitable probe shape according to the structural characteristics of the reactor feed port, agitator seal, discharge valve, inspection blind hole cover 7 and other places prone to leakage. The flat probe 1306 in the movable frame 1305 is initially mounted on the outside of the circular probe 1302 at the end of the gooseneck tube 1301. If a circular probe is needed, Head 1302, just pull out the pins on both sides of the movable frame 1305 from the side grooves 1304 provided at the side ends of the fixed frame 1303 and fold them upwards, and you can choose the appropriate probe type according to the detection needs, so as to minimize the interference of environmental airflow caused by the incompatibility between the probe shape and the reactor interface. In addition, the structural feature of the gooseneck tube 1301 itself that can be bent arbitrarily and maintain its direction can further meet the use requirements of the elbow probe, so that the detection gun 1 of this application can better adapt to the complex interface shapes of different parts of the reactor and has stronger applicability.

[0034] In summary, when using the air tightness detection device for the production of the new material drying agent:

[0035] First, after the pressure test of the reaction kettle starts, close all valves and openings of the reaction kettle, and fill compressed air or nitrogen into the reaction kettle to keep the pressure inside the reaction kettle higher than the working pressure. The user holds the detection gun 1 and selects a probe shape that fits the structural characteristics of the air leakage-prone areas such as the feed inlet of the reaction kettle, the seal of the agitator, the discharge valve, and the maintenance blind hole cover plate 7. Among them, the flat probe 1306 in the movable frame 1305 is sleeved outside the circular probe 1302 at the end of the gooseneck tube 1301 in the initial state. If the circular probe 1302 is needed, just pull out the pin shafts on both sides of the movable frame 1305 from the side grooves 1304 provided at the side end of the fixed frame 1303 and fold them upward, then the probe type that fits the detection requirements can be selected, which can minimize the environmental air flow interference problem caused by the mismatch between the probe shape and the reaction kettle interface. In addition, the structural feature that the gooseneck tube 1301 can be bent arbitrarily and maintain its direction can further meet the use requirements of the elbow probe, so that the detection gun 1 of the present application can better adapt to the complex interface shapes of different parts of the reaction kettle, and has stronger applicability;

[0036] Second, move the probe part of the detection gun 1 along the gap of the detection part of the reaction kettle. When there is an air leakage at the detection part, the compressed air inside the reaction kettle enters the measurement pipeline 2 through the gap, and then drives the airtight plate 303 with the windward surface perpendicular to the pipeline axis inside the measurement pipeline 2 to deflect. The deflection of the airtight plate 303 drives the coaxial drive gear 304 inside the bearing seat 301 to rotate through the torsion rotating shaft 302. Through the meshing transmission between the outer teeth of the drive gear 304 and the upper driven toothed plate 305, the driven toothed plate 305 is further displaced in the reserved track inside the equipment bin 6. A circuit board 8 is provided at the side end of the equipment bin 6 of the present application. The trigger button 9 provided on the edge of the circuit board 8 adjacent to the side of the driven toothed plate 305 is an independent normally open switch and forms an independent circuit with the corresponding three-color lamp 11. During the movement of the driven toothed plate 305, the side-end elastic piece 306 of it triggers the trigger button 9 at the corresponding position in turn. Then, the air leakage situation inside the reaction kettle at this time can be judged by the lighting situation of the corresponding three-color lamp 11 after the circuit is closed. During the use of the detection gun 1 of the present application, the user only needs to judge the lighting situation of the three-color lamp 11 to make an intuitive judgment on the air leakage situation of the current detection part, which solves the deficiency that the user only judges the air leakage situation by observing the deflection angle of the airtight plate 303 and relying on experience, making the operation of the detection gun 1 of the present application more simple and the test result more accurate and reliable;

[0037] Finally, if the air leakage condition of the current detection part is relatively serious and exceeds the design threshold, the driven gear plate 305 is near the end of the stroke at this time. Not only will the tri-color lamp 11 at the very end be triggered by the elastic piece 306 to give an alarm, but at the same time, the driven gear plate 305 will abut against and press on the piston rod 1204 outside the cylinder block 1201. Along with the movement of the piston rod 1204 along the axis of the cylinder block 1201, the fluorescent agent injected into the cylinder block 1201 through the one-way liquid inlet pipe 1202 is supplied to the annular nozzle 1207 surrounding the front end opening of the detection gun 1 through the liquid outlet pipe 1206, and then the fluorescent agent is sprayed on the leakage position on the reaction kettle to play a marking role. In this application, the air leakage detection and the fluorescent marking process are designed in a linked manner, and the leakage position of the reaction kettle is marked synchronously when leakage is found, which is convenient for subsequent precise manual repair.

[0038] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device.

[0039] In this article, specific examples are used to elaborate on the principles and implementation manners of the present invention. The description of the above examples is only used to help understand the method of the present invention and its core idea. The above is only the preferred implementation manner of the present invention. It should be pointed out that due to the limitation of literal expression, and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, retouches or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. An airtightness detection device for the production of a new material dryer, comprising a detection gun (1) and a leakage detection component (3), characterized in that, The internal of the detection gun (1) is provided with a measurement pipeline (2) with openings at both ends. The air leakage detection component (3) is arranged at the top end of the detection gun (1). The air leakage detection component (3) includes a bearing seat (301) fixed to the inner wall of the top end of the measurement pipeline (2). A torsion rotating shaft (302) is rotatably installed inside the bearing seat (301). Airtight plates (303) are coaxially connected to both ends of the torsion rotating shaft (302). The airtight plates (303) are elastically connected to the adjacent side walls of the bearing seat (301) through torsion springs. The windward surface of the airtight plate (303) is perpendicular to the axis of the measurement pipeline (2). A driving gear (304) is coaxially connected to the middle of the torsion rotating shaft (302). A driven toothed plate (305) is arranged above the driving gear (304). The outer edge teeth of the driving gear (304) are engaged with the driven toothed plate (305) above. A elastic sheet (306) is fixedly connected to the side wall of the driven toothed plate (305).

2. The airtightness detection device for the production of a new material drier according to claim 1, characterized in that, The rear end opening of the detection gun (1) is provided with an exhaust port (4). A sealing cap is fixed to the external thread of the exhaust port (4). A grip (5) is fixedly installed at the middle of the bottom of the detection gun (1). A finger fitting groove is arranged on the inclined surface of the grip (5).

3. The airtightness detection device for the production of a new material drier according to claim 2, characterized in that, An equipment bin (6) is arranged at the side end of the top of the detection gun (1). A cover plate (7) is fixed to the equipment bin (6) by bolts.

4. An airtightness detection device for the production of a new material drier according to claim 3, characterized in that, A circuit board (8) is fixed to the internal of the equipment bin (6) by bolts. Three trigger buttons (9) are arranged at one side edge of the circuit board (8).

5. An airtightness detection device for the production of a new material dryer accelerator according to claim 4, characterized in that, A power module (10) is arranged in the middle of the circuit board (8). A three-color lamp (11) is arranged on the other side of the circuit board (8). The trigger buttons (9) serve as independent normally open switches and form independent circuits with the corresponding three-color lamps (11). When the trigger buttons (9) are sequentially triggered by the elastic sheets (306) at their side ends during the movement of the driven toothed plate (305), the circuits are closed and the corresponding three-color lamps (11) are lit.

6. An airtightness detection device for the production of a new material drier according to claim 5, characterized in that, A linkage marking component (12) is arranged in the internal of the equipment bin (6). The linkage marking component (12) includes a cylinder body (1201) arranged along the moving direction of the driven toothed plate (305). A one-way liquid inlet pipe (1202) is communicated with the top of the cylinder body (1201). A fluorescent agent bottle (1203) is threadedly connected to the one-way liquid inlet pipe (1202).

7. An airtightness detection device for the production of a new material drier according to claim 6, characterized in that, The linkage marking component (12) further includes a piston rod (1204) located at the rear end of the cylinder body (1201). The part of the piston rod (1204) protruding outside the cylinder body (1201) is flush with the three-color lamp (11) at the end of the moving stroke of the driven toothed plate (305). A return spring (1205) is sleeved on the part of the piston rod (1204) located outside the cylinder body (1201).

8. An airtightness detection device for the production of a new material dryer accelerator according to claim 7, characterized in that, The linkage marking component (12) further includes a liquid outlet pipe (1206) located at the front end of the cylinder body (1201). An external ring-shaped spray pipe (1207) is connected to the liquid outlet pipe (1206). The ring-shaped spray pipe (1207) surrounds the outer edge of the front end opening of the detection gun (1).

9. An airtightness detection device for the production of a new material dryer accelerator according to claim 8, characterized in that, A quick-change component (13) is connected to the front end opening of the detection gun (1). The quick-change component (13) includes a gooseneck tube (1301) movably connected to the front end opening of the detection gun (1). A circular probe (1302) is provided at the end of the gooseneck tube (1301). A fixing frame (1303) is fixed outside the circular probe (1302), and side grooves (1304) are formed on both sides of the fixing frame (1303).

10. An airtightness detection device for the production of a new material dryer accelerator according to claim 9, characterized in that, The quick-change component (13) further includes a movable frame (1305) rotatably connected to the end of the gooseneck tube (1301). The pin shafts on both sides of the movable frame (1305) are matched with the side grooves (1304) provided on both sides of the fixing frame (1303). A flat probe (1306) is arranged inside the movable frame (1305), and the flat probe (1306) is sleeved outside the circular probe (1302).

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