Aluminum foil belt defect detection device

Abstract

The invention discloses an aluminum foil belt defect detection device, and relates to the technical field of workpiece processing detection, the aluminum foil belt defect detection device comprises a rolling rack and a detection rack, the detection rack is provided with a bottom roller, the outer side of the bottom roller is provided with two groups of air pipes, and the detection rack is provided with a ventilation assembly; the aluminum foil strip defect detection device comprises a detection frame, a detection roller is arranged in the middle of the detection frame, a leveling roller is installed at one end of the detection frame, a fluorescence feeding component is installed on the detection roller and comprises a bag body, the bag body is filled with a fluorescent agent, a fluorescence absorption component is installed at one end of the detection frame, and the fluorescence absorption component is located on the outer side of the leveling roller. Under the action of the ventilation assembly, ventilation operation is conducted in the air pipe, oil dirt is prevented from adhering to dust, fluorescent agents are put through the fluorescent putting part, the defect position of the aluminum foil belt is reflected in time, and therefore follow-up treatment on the defect position is facilitated, the fluorescent absorption part is beneficial to absorption of the put fluorescent agents, and the service life of the aluminum foil belt is prolonged. And defect positions and defect conditions of the aluminum foil tape can be detected conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum foil strip detection, and in particular to an aluminum foil strip defect detection device. Background Art

[0002] With the widespread use of aluminum foil in modern industry, its surface quality is crucial to the overall performance of the product. Defects on the surface of aluminum foil not only affect the aesthetics of the product, but may also have a serious impact on its performance. Therefore, aluminum foil inspection agencies play a pivotal role in the production process of aluminum foil. The surface defects of aluminum foil mainly include scratches, pits, oil stains, oxidation, etc. These defects will not only reduce the mechanical properties and corrosion resistance of aluminum foil, but may also affect its application in packaging, construction, electronics and other fields.

[0003] After the production of the aluminum foil strip is completed, it is rolled into a tube shape, and then the aluminum foil strip is pulled out by a pulling device. In the prior art, personnel observe the surface of the aluminum foil strip. Since the aluminum foil strip is continuously pulled out for inspection, it is not convenient for personnel to mark the defect position in time during observation, and the consistency is poor and fatigue is easy. In particular, the fatigue problem of personnel causes the missed judgment of defects, which is not convenient for timely processing. Existingly, a camera device is also used to detect the surface of the aluminum foil strip. However, since there will be oil stains in the production process of the aluminum foil strip, when the oil stains adhere to dust and other debris, it is easy to cause damage defects on the surface of the aluminum foil. It is not convenient to judge whether the aluminum foil strip is defective itself or damaged due to the adhesion of oil stains through the camera device. For this reason, the present invention proposes an aluminum foil strip defect detection device. Summary of the invention

[0004] The object of the present invention is to provide an aluminum foil strip defect detection device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aluminum foil strip defect detection device, comprising a winding frame, a detection frame is provided on the right side of the winding frame, a bottom roller is installed on the lower left side of the detection frame, two groups of air ducts are provided on the outer side of the bottom roller, and the two groups of air ducts are distributed on the opposite sides of the passing aluminum foil strip, and a ventilation component for ventilating the air duct is installed on the detection frame; a detection roller is provided on the top of the detection frame, and two leveling rollers are installed on the upper right side of the detection frame, and the outsides of the bottom roller, the detection roller and the leveling roller are rotatably connected with roller shafts; a fluorescent delivery component is installed on the detection roller, and the fluorescent delivery component includes a capsule, and the capsule is filled with fluorescent agent, and the detection frame is also equipped with a fluorescent absorption component located on the outer side of the leveling roller.

[0006] Preferably, the bottom roller is located below the detection roller, the air duct is a triangular prism, and air guide branch pipes are installed on the outside of the two groups of air ducts. The two air guide branch pipes are connected by connecting pipes at the installation position of the bottom roller and the detection frame, and one of the connecting pipes is connected to the ventilation assembly.

[0007] Preferably, the ventilation assembly includes a piston tube body installed on the bottom plate of the detection frame, the piston tube body is connected to an air intake pipe on the outside, and the air intake pipe is connected to a connecting pipe, a piston rod is provided on the piston tube body, a return spring is connected between the piston rod and the piston tube body, and a compression component for compressing the movement of the piston rod is connected to the top of the piston rod.

[0008] Preferably, the compression component includes a limit rod installed on the detection frame, the limit rod is sleeved with a sliding frame, the sliding frame is a frame with two groups of right-angled surfaces, one of the frames is provided with two groups of guide tooth rows, and the other frame is provided with a rotating tooth row, the top of the piston rod is connected to a bidirectional threaded rod, and the bidirectional threaded rod is sleeved with a threaded shaft sleeve, and the outside of the threaded shaft sleeve is provided with teeth meshing with the rotating tooth row, the threaded shaft sleeve is rotatably connected to a support member, and the support member is connected to the detection frame, a cavity is opened inside the detection roller, and a driving roller is installed inside the cavity, one end of the driving roller is connected to a half-circle gear meshing with the guide tooth row, and the other end of the driving roller is connected to a motor, and a support seat for lifting the motor is installed on the detection frame.

[0009] Preferably, the support member includes a support fixing seat installed on the detection frame, one end of the support fixing seat is rotatably connected to a rotating sleeve, the rotating sleeve is sleeved on the outside of the bidirectional threaded rod, the top of the rotating sleeve is connected to a plurality of connecting rods, and the connecting rods are fixedly connected to the bottom of the threaded sleeve.

[0010] Preferably, both ends of the detection roller are provided with plug-in grooves, the fluorescent projection component also includes a plug-in ring piece installed inside the plug-in groove, the top of the plug-in ring piece is connected to a telescopic rod, a cross bar is connected between the two telescopic rods, and the capsule is installed on the cross bar.

[0011] Preferably, the bottom of the capsule is an arc block, the internal cavity of the arc block is used to fill the fluorescent agent, the bottom of the arc block is provided with a fluorescent irradiation surface, the bottom of the arc block is provided with an air port, and the side of the arc block is installed with a heating block for introducing hot air into the capsule.

[0012] Preferably, the cross-section of the upper part of the sac body is triangular, and a movable groove is opened on the upper part of the sac body, a plurality of buffer springs are installed inside the movable groove, and the buffer springs are connected to the cross bar.

[0013] Preferably, the fluorescent absorption component includes two hinged seats installed on the outside of the detection frame, a connecting bent rod is installed on the hinged seat, and an absorption shell is installed on the connecting bent rod, an activated carbon layer is provided at the bottom of the absorption shell, a pull tube is installed on the top of the absorption shell, and the pull tube is connected to the top of the capsule, and a detection probe is provided outside the absorption shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention designs a detection frame to pull out the processed aluminum foil strip for detection, and under the action of the ventilation component, ventilates the air duct, which is beneficial to blowing clean the surface of the aluminum foil strip to be detected, thereby avoiding the adhesion of oil and dust. At the same time, the fluorescent agent is released through the fluorescent release component to timely reflect the defect position of the aluminum foil strip, which is beneficial to the subsequent processing of the defect position. At the same time, the designed fluorescent absorption component is beneficial to absorbing the released fluorescent agent, so that the aluminum foil strip is more convenient and timely when detecting defects than the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Another perspective schematic diagram of the overall structure of the present invention; Figure 3 for Figure 1 Schematic diagram of the structure after the winding frame is removed; Figure 4 It is a structural schematic diagram of the detection frame of the present invention; Figure 5 It is a structural schematic diagram of the ventilation component of the present invention; Figure 6 It is a schematic diagram of the structure of the compression component and the support member of the present invention; Figure 7 It is a structural schematic diagram of the fluorescence delivery component and the fluorescence absorption component of the present invention; Figure 8 It is a structural schematic diagram of the crossbar of the present invention; Fig. 9 for Figure 7 Schematic diagram of the enlarged structure of area A in the middle.

[0016] In the figure: 1. Winding frame; 2. Detection frame; 3. Air duct; 4. Ventilation assembly; 5. Fluorescent delivery component; 6. Fluorescent absorption component; 7. Compression component; 8. Support; 21. Bottom roller; 22. Detection roller; 23. Smoothing roller; 24. Roller shaft; 25. Plug-in slot; 31. Air guide branch pipe; 32. Connecting pipe; 41. Piston tube body; 42. Inlet pipe; 43. Piston rod; 44. Return spring; 51. Capsule; 52. Plug-in ring; 53. Telescopic rod; 54. Cross bar; 55. Arc block; 56. Fluorescent Irradiation surface; 57, air port; 58, heating block; 59, movable groove; 61, hinged seat; 62, connecting curved rod; 63, absorption shell; 64, activated carbon layer; 65, pull tube; 66, detection probe; 71, limit rod; 72, sliding frame; 73, guide gear row; 74, rotating gear row; 75, two-way threaded rod; 76, threaded bushing; 77, driving roller; 78, half-circle gear; 79, motor; 81, support fixed seat; 82, rotating sleeve; 83, connecting rod; 591, buffer spring; 791, support seat. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0018] See also Figure 1-Figure 9 The present invention provides a technical solution: an aluminum foil strip defect detection device, which is used to solve the problem that after the existing aluminum foil strip production is completed, the aluminum foil strip defect detection device includes a winding frame 1, and the winding frame 1 is as shown in the attached Figure 1 As shown in the figure, the bottom is a bottom plate for support, the bottom plate is a bracket, the two sets of bracket parts are roller structures, and the roller structure and the bracket are detachable. By rolling the aluminum foil strip on the roller and then fixing the roller and the bracket, it is convenient to completely roll up the aluminum foil strip and guide it to the winding rack 1. A detection rack 2 is provided on one side of the winding rack 1. The bottom of the detection rack 2 is also a plate in contact with the ground, and its top is fixedly connected to two supporting columns. Strip plates are fixedly installed on the top of the two supporting columns, and then two connecting columns are fixedly installed on the side of the strip plates, and are distributed and placed on both sides as shown in the attached figure. Figure 1 As shown in the plate, the detection frame 2 is equipped with a bottom roller 21, a detection roller 22 is arranged in the middle of the detection frame 2, and two leveling rollers 23 are arranged at one end of the detection frame 2. The outsides of the bottom roller 21, the detection roller 22 and the leveling roller 23 are all rotatably connected with a roller shaft 24; the bottom roller 21 is lower than the detection roller 22, so that the aluminum foil strip is sequentially bypassed from the bottom of the bottom roller 21, bypassed from the detection roller 22, and then passed from the bottom of one of the leveling rollers 23, and passed from the top of the other leveling roller 23, so that the distribution of the aluminum foil strip is as shown in the attached Figure 1 As shown, the aluminum foil strip can be pulled by a pulling device, such as a motor, or by receiving one end of the pulled aluminum foil strip. The diameter of the roller 24 is lower than the diameters of the bottom roller 21, the detection roller 22 and the smoothing roller 23, so that the aluminum foil strip can be limited to the roller 24 for rolling.

[0019] For the initial treatment of the aluminum foil strip being pulled out, the surface of the aluminum foil strip is blown, which is conducive to keeping the surface of the aluminum foil strip clean. Two sets of air ducts 3 are arranged on the outside of the bottom roller 21. The design of the air duct 3 is as shown in the attached figure. Figure 5 As shown in the figure, two groups of air ducts 3 are distributed on opposite sides of the passing aluminum foil strip, and a ventilation assembly 4 for ventilating the air duct 3 is installed on the detection frame 2; the air duct 3 is a triangular prism, and an air guide branch pipe 31 is installed outside the air duct 3, and the two air guide branch pipes 31 are connected with a connecting pipe 32 at the installation position of the bottom roller 21 and the detection frame 2, and one of the connecting pipes 32 is connected to the ventilation assembly 4.

[0020] A plurality of grooves are provided on the prismatic surface of the air duct 3, thereby dividing the air duct 3 into individual cavities. The positions of the two groups of air ducts 3 are distributed as shown in the attached figure. Figure 1 and attached Figure 2 As shown, the air outlet of the air duct 3 above the aluminum foil strip faces the winding frame 1, and the air outlet of the air duct 3 below the aluminum foil strip faces the detection frame 2. In this way, after the air is introduced into the ventilation component 4, the surface of the aluminum foil strip is blown along the two air outlets of the air duct 3, thereby keeping the surface of the aluminum foil strip clean.

[0021] Design reference of ventilation assembly 4 Figure 1-Figure 3 ,Attached Figure 5-Figure 6 The ventilation assembly 4 includes a piston tube body 41 installed on the bottom plate of the detection frame 2, and the piston tube body 41 is connected to an air intake pipe 42 on the outside, and the air intake pipe 42 is connected to the connecting pipe 32. A piston rod 43 is provided on the piston tube body 41, and a return spring 44 is connected between the piston rod 43 and the piston tube body 41. The top of the piston rod 43 is connected to a compression component 7 for compressing the movement of the piston rod 43.

[0022] The compression component 7 includes a limit rod 71 installed on the detection frame 2, and a sliding frame 72 is sleeved on the limit rod 71. The sliding frame 72 is a frame with two groups of right-angled surfaces, one of which is provided with two groups of guide tooth rows 73, and the other is provided with a rotating tooth row 74. The top of the piston rod 43 is connected to a bidirectional threaded rod 75, and the bidirectional threaded rod 75 is sleeved with a threaded shaft sleeve 76, and the threaded shaft sleeve 76 is provided with teeth meshing with the rotating tooth row 74 on the outside, the threaded shaft sleeve 76 is rotatably connected to a support member 8, and the support member 8 is connected to the detection frame 2, a cavity is opened inside the detection roller 22, and a driving roller 77 is installed inside the cavity, one end of the driving roller 77 is connected to a half-circle gear 78 meshing with the guide tooth row 73, and the other end of the driving roller 77 is connected to a motor 79, and a support seat 791 for lifting the motor 79 is installed on the detection frame 2.

[0023] The support member 8 includes a support fixing seat 81 installed on the detection frame 2, one end of the support fixing seat 81 is rotatably connected to a rotating sleeve 82, the rotating sleeve 82 is sleeved on the outside of the bidirectional threaded rod 75, the top of the rotating sleeve 82 is connected to a plurality of connecting rods 83, and the connecting rods 83 are fixedly connected to the bottom of the threaded sleeve 76.

[0024] By controlling the speed and direction of the motor 79, the driving roller 77 is rotated. Because one end of the driving roller 77 is fixedly connected to the half-circle gear 78, the half-circle gear 78 starts to rotate. Since the half-circle gear 78 is meshed with the guide tooth row 73, when the half-circle gear 78 is meshed with the upper guide tooth row 73, the sliding frame 72 slides along the limit rod 71 toward the winding frame 1. When the half-circle gear 78 is meshed with the lower guide tooth row 73, the sliding frame 72 slides along the limit rod 71 toward the detection frame 2. The sliding frame 72 moves in the same direction, thereby realizing the reciprocating movement of the sliding frame 72. Since the rotating tooth row 74 and the threaded sleeve 76 of the sliding frame 72 are meshed with each other, and since the threaded sleeve 76 is fixedly connected to the rotating sleeve 82 through the connecting rod 83, and the rotating sleeve 82 rotates on the supporting fixed seat 81, the threaded sleeve 76 can be kept in the position above the rotating sleeve 82 to rotate, and the bidirectional threaded rod 75 can be driven to move up and down, thereby facilitating the piston movement of the piston rod 43 in the piston tube body 41, thereby generating uninterrupted wind blowing through the air duct 3 onto the surface of the aluminum foil belt.

[0025] After the surface of the aluminum foil strip is preliminarily treated, the treated aluminum foil strip needs to be inspected. A fluorescent delivery component 5 is installed on the inspection roller 22, and the fluorescent delivery component 5 includes a capsule 51, and the capsule 51 is filled with a fluorescent agent. A fluorescent absorption component 6 is installed at one end of the inspection frame 2, and the fluorescent absorption component 6 is located on the outside of the leveling roller 23.

[0026] The detection roller 22 has plug-in slots 25 at both ends, and the fluorescent projection component 5 also includes a plug-in ring piece 52 installed inside the plug-in slot 25. The top of the plug-in ring piece 52 is connected to a telescopic rod 53, and a cross bar 54 is connected between the two telescopic rods 53. The capsule 51 is installed on the cross bar 54.

[0027] The bottom of the capsule 51 is an arc block 55, the internal cavity of the arc block 55 is used to fill the fluorescent agent, the bottom of the arc block 55 is provided with a fluorescent irradiation surface 56, the bottom of the arc block 55 is provided with an air port 57, and the side of the arc block 55 is installed with a heating block 58 for introducing hot air into the capsule 51.

[0028] The upper cross-section of the capsule body 51 is triangular, and a movable groove 59 is opened in the upper part of the capsule body 51 . A plurality of buffer springs 591 are installed inside the movable groove 59 , and the buffer springs 591 are connected to the cross bar 54 .

[0029] The fluorescent absorption component 6 includes two hinged seats 61 installed on the outside of the detection frame 2, a connecting bent rod 62 is installed on the hinged seat 61, and an absorption shell 63 is installed on the connecting bent rod 62, an activated carbon layer 64 is provided at the bottom of the absorption shell 63, a pull tube 65 is installed on the top of the absorption shell 63, and the pull tube 65 is connected to the top of the capsule 51, and a detection probe 66 is provided outside the absorption shell 63.

[0030] When the aluminum foil strip passes over the detection roller 22, the heating block 58 is heated by electric heating, thereby reducing the air in the internal cavity of the arc block 55 and increasing the pressure, so that the fluorescent agent is sprayed from the air port 57 onto the surface of the aluminum foil strip. At the same time, the fluorescent agent is irradiated onto the surface of the aluminum foil strip through the fluorescent irradiation surface 56, thereby facilitating the visualization of the fluorescent agent and accurately showing the defective position of the aluminum foil strip.

[0031] After the fluorescent agent is placed on the aluminum foil tape, since the capsule 51 and the absorption shell 63 are electrically connected, that is, connected in the form of electrical signals, when the fluorescent agent is released through the heating block 58, it is transmitted to the absorption shell 63 in the form of electrical signals, and the length of the aluminum foil tape is recorded by the computer control end. When the aluminum foil tape of the fluorescent agent of the nozzle is transported to the absorption shell 63, the detection probe 66 uses a camera to collect the position where the fluorescent agent appears, thereby forming a record, and then under the adsorption action of the activated carbon layer 64, it is absorbed into the pull tube 65. In this way, the absorption shell 63, the pull tube 65, the capsule 51 and the arc block 55 cavity form a complete circulation cavity, which is convenient for the placement and absorption cycle of the fluorescent agent, and at the same time, the defect position of the aluminum foil tape and the specific phenomenon of the defect are displayed in time, which is more convenient than manual detection, and the defect position and defect condition are fed back in time.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum foil defect detection device, comprising a winding frame (1), characterized in that: A detection frame (2) is provided on the right side of the winding frame (1), a bottom roller (21) is installed on the lower left side of the detection frame (2), two groups of air ducts (3) are provided on the outer side of the bottom roller (21), and the two groups of air ducts (3) are distributed on opposite sides of the passing aluminum foil strip, and a ventilation component (4) for ventilating the air ducts (3) is installed on the detection frame (2); A detection roller (22) is provided on the top of the detection frame (2), and two leveling rollers (23) are installed on the upper right side of the detection frame (2), and the outsides of the bottom roller (21), the detection roller (22) and the leveling roller (23) are all rotatably connected to roller shafts (24); A fluorescent projection component (5) is installed on the detection roller (22), and the fluorescent projection component (5) includes a capsule (51) filled with a fluorescent agent. The detection frame (2) is also installed with a fluorescent absorption component (6) located outside the smoothing roller (23).

2. The aluminum foil defect detection device according to claim 1, characterized in that: The bottom roller (21) is located below the detection roller (22); the air duct (3) is a triangular prism; and air guide branch pipes (31) are installed outside the two groups of air ducts (3); the two air guide branch pipes (31) are connected by connecting pipes (32) at the installation positions of the bottom roller (21) and the detection frame (2); and one of the connecting pipes (32) is connected to the ventilation assembly (4).

3. The aluminum foil defect detection device according to claim 2, characterized in that: The ventilation assembly (4) comprises a piston tube body (41) mounted on the bottom plate of the detection frame (2); the piston tube body (41) is externally connected to an air intake pipe (42), and the air intake pipe (42) is communicated with a connecting pipe (32); a piston rod (43) is provided on the piston tube body (41); a return spring (44) is connected between the piston rod (43) and the piston tube body (41); and a compression component (7) for compressing the movement of the piston rod (43) is connected to the top of the piston rod (43).

4. The aluminum foil defect detection device according to claim 3 is characterized in that: The compression component (7) comprises a limit rod (71) mounted on the detection frame (2), the limit rod (71) is sleeved with a sliding frame (72), the sliding frame (72) is a frame with two groups of right-angled surfaces, one of the frames is provided with two groups of guide tooth rows (73), and the other frame is provided with a rotating tooth row (74), the top of the piston rod (43) is connected with a bidirectional threaded rod (75), and the bidirectional threaded rod (75) is sleeved with a threaded shaft sleeve (76), and the threaded shaft sleeve (76) is provided with a threaded shaft sleeve (76) on the outside thereof. The movable tooth row (74) is meshed with teeth, the threaded sleeve (76) is rotatably connected to a support member (8), and the support member (8) is connected to the detection frame (2), a cavity is opened inside the detection roller (22), and a driving roller (77) is installed inside the cavity, one end of the driving roller (77) is connected to a half-circle gear (78) meshed with the guide tooth row (73), and the other end of the driving roller (77) is connected to a motor (79), and a support seat (791) for lifting the motor (79) is installed on the detection frame (2).

5. The aluminum foil defect detection device according to claim 4, characterized in that: The support member (8) comprises a support fixing seat (81) mounted on the detection frame (2); one end of the support fixing seat (81) is rotatably connected to a rotating sleeve (82); the rotating sleeve (82) is sleeved on the outside of the bidirectional threaded rod (75); a plurality of connecting rods (83) are connected to the top of the rotating sleeve (82); and the connecting rods (83) are fixedly connected to the bottom of the threaded sleeve (76).

6. The aluminum foil defect detection device according to claim 1, characterized in that: Both ends of the detection roller (22) are provided with plug-in slots (25), the fluorescent projection component (5) further comprises a plug-in ring piece (52) installed inside the plug-in slot (25), the top of the plug-in ring piece (52) is connected to a telescopic rod (53), a cross bar (54) is connected between the two telescopic rods (53), and the capsule (51) is installed on the cross bar (54).

7. The aluminum foil defect detection device according to claim 6, characterized in that: The bottom of the capsule (51) is an arc-shaped block (55), the internal cavity of the arc-shaped block (55) is used to fill the fluorescent agent, the bottom of the arc-shaped block (55) is provided with a fluorescent irradiation surface (56), the bottom of the arc-shaped block (55) is provided with an air port (57), and the side of the arc-shaped block (55) is installed with a heating block (58) for introducing hot air into the capsule (51).

8. The aluminum foil defect detection device according to claim 7, characterized in that: The upper cross-section of the sac body (51) is triangular, and a movable groove (59) is provided on the upper part of the sac body (51). A plurality of buffer springs (591) are installed inside the movable groove (59), and the buffer springs (591) are connected to the cross bar (54).

9. The aluminum foil defect detection device according to claim 1, characterized in that: The fluorescent absorption component (6) comprises two hinged seats (61) installed on the outside of the detection frame (2), a connecting bent rod (62) is installed on the hinged seat (61), and an absorption shell (63) is installed on the connecting bent rod (62), an activated carbon layer (64) is provided at the bottom of the absorption shell (63), a pull tube (65) is installed on the top of the absorption shell (63), and the pull tube (65) is connected to the top of the capsule (51), and a detection probe (66) is provided on the outside of the absorption shell (63).

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